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Diffstat (limited to 'src/nvim/ops.c')
| -rw-r--r-- | src/nvim/ops.c | 5174 |
1 files changed, 5174 insertions, 0 deletions
diff --git a/src/nvim/ops.c b/src/nvim/ops.c new file mode 100644 index 0000000000..30606b077e --- /dev/null +++ b/src/nvim/ops.c @@ -0,0 +1,5174 @@ +/* + * VIM - Vi IMproved by Bram Moolenaar + * + * Do ":help uganda" in Vim to read copying and usage conditions. + * Do ":help credits" in Vim to see a list of people who contributed. + * See README.txt for an overview of the Vim source code. + */ + +/* + * ops.c: implementation of various operators: op_shift, op_delete, op_tilde, + * op_change, op_yank, do_put, do_join + */ + +#include <string.h> + +#include "vim.h" +#include "ops.h" +#include "buffer.h" +#include "charset.h" +#include "edit.h" +#include "eval.h" +#include "ex_cmds.h" +#include "ex_cmds2.h" +#include "ex_getln.h" +#include "fold.h" +#include "getchar.h" +#include "indent.h" +#include "mark.h" +#include "mbyte.h" +#include "memline.h" +#include "memory.h" +#include "message.h" +#include "misc1.h" +#include "misc2.h" +#include "move.h" +#include "normal.h" +#include "option.h" +#include "path.h" +#include "screen.h" +#include "search.h" +#include "term.h" +#include "ui.h" +#include "undo.h" +#include "window.h" + +/* + * Registers: + * 0 = unnamed register, for normal yanks and puts + * 1..9 = registers '1' to '9', for deletes + * 10..35 = registers 'a' to 'z' + * 36 = delete register '-' + */ +#define NUM_REGISTERS 37 +#define DELETION_REGISTER 36 + +/* + * Each yank register is an array of pointers to lines. + */ +static struct yankreg { + char_u **y_array; /* pointer to array of line pointers */ + linenr_T y_size; /* number of lines in y_array */ + char_u y_type; /* MLINE, MCHAR or MBLOCK */ + colnr_T y_width; /* only set if y_type == MBLOCK */ +} y_regs[NUM_REGISTERS]; + +static struct yankreg *y_current; /* ptr to current yankreg */ +static int y_append; /* TRUE when appending */ +static struct yankreg *y_previous = NULL; /* ptr to last written yankreg */ + +/* + * structure used by block_prep, op_delete and op_yank for blockwise operators + * also op_change, op_shift, op_insert, op_replace - AKelly + */ +struct block_def { + int startspaces; /* 'extra' cols before first char */ + int endspaces; /* 'extra' cols after last char */ + int textlen; /* chars in block */ + char_u *textstart; /* pointer to 1st char (partially) in block */ + colnr_T textcol; /* index of chars (partially) in block */ + colnr_T start_vcol; /* start col of 1st char wholly inside block */ + colnr_T end_vcol; /* start col of 1st char wholly after block */ + int is_short; /* TRUE if line is too short to fit in block */ + int is_MAX; /* TRUE if curswant==MAXCOL when starting */ + int is_oneChar; /* TRUE if block within one character */ + int pre_whitesp; /* screen cols of ws before block */ + int pre_whitesp_c; /* chars of ws before block */ + colnr_T end_char_vcols; /* number of vcols of post-block char */ + colnr_T start_char_vcols; /* number of vcols of pre-block char */ +}; + +static void shift_block(oparg_T *oap, int amount); +static void block_insert(oparg_T *oap, char_u *s, int b_insert, + struct block_def*bdp); +static int stuff_yank(int, char_u *); +static void put_reedit_in_typebuf(int silent); +static int put_in_typebuf(char_u *s, int esc, int colon, + int silent); +static void stuffescaped(char_u *arg, int literally); +static void mb_adjust_opend(oparg_T *oap); +static void free_yank(long); +static void free_yank_all(void); +static void yank_copy_line(struct block_def *bd, long y_idx); +static void dis_msg(char_u *p, int skip_esc); +static char_u *skip_comment(char_u *line, int process, + int include_space, + int *is_comment); +static void block_prep(oparg_T *oap, struct block_def *, linenr_T, int); +static void str_to_reg(struct yankreg *y_ptr, int type, char_u *str, + long len, + long blocklen); +static int ends_in_white(linenr_T lnum); +static int same_leader(linenr_T lnum, int, char_u *, int, char_u *); +static int fmt_check_par(linenr_T, int *, char_u **, int do_comments); + +/* + * The names of operators. + * IMPORTANT: Index must correspond with defines in vim.h!!! + * The third field indicates whether the operator always works on lines. + */ +static char opchars[][3] = +{ + {NUL, NUL, FALSE}, /* OP_NOP */ + {'d', NUL, FALSE}, /* OP_DELETE */ + {'y', NUL, FALSE}, /* OP_YANK */ + {'c', NUL, FALSE}, /* OP_CHANGE */ + {'<', NUL, TRUE}, /* OP_LSHIFT */ + {'>', NUL, TRUE}, /* OP_RSHIFT */ + {'!', NUL, TRUE}, /* OP_FILTER */ + {'g', '~', FALSE}, /* OP_TILDE */ + {'=', NUL, TRUE}, /* OP_INDENT */ + {'g', 'q', TRUE}, /* OP_FORMAT */ + {':', NUL, TRUE}, /* OP_COLON */ + {'g', 'U', FALSE}, /* OP_UPPER */ + {'g', 'u', FALSE}, /* OP_LOWER */ + {'J', NUL, TRUE}, /* DO_JOIN */ + {'g', 'J', TRUE}, /* DO_JOIN_NS */ + {'g', '?', FALSE}, /* OP_ROT13 */ + {'r', NUL, FALSE}, /* OP_REPLACE */ + {'I', NUL, FALSE}, /* OP_INSERT */ + {'A', NUL, FALSE}, /* OP_APPEND */ + {'z', 'f', TRUE}, /* OP_FOLD */ + {'z', 'o', TRUE}, /* OP_FOLDOPEN */ + {'z', 'O', TRUE}, /* OP_FOLDOPENREC */ + {'z', 'c', TRUE}, /* OP_FOLDCLOSE */ + {'z', 'C', TRUE}, /* OP_FOLDCLOSEREC */ + {'z', 'd', TRUE}, /* OP_FOLDDEL */ + {'z', 'D', TRUE}, /* OP_FOLDDELREC */ + {'g', 'w', TRUE}, /* OP_FORMAT2 */ + {'g', '@', FALSE}, /* OP_FUNCTION */ +}; + +/* + * Translate a command name into an operator type. + * Must only be called with a valid operator name! + */ +int get_op_type(int char1, int char2) +{ + int i; + + if (char1 == 'r') /* ignore second character */ + return OP_REPLACE; + if (char1 == '~') /* when tilde is an operator */ + return OP_TILDE; + for (i = 0;; ++i) + if (opchars[i][0] == char1 && opchars[i][1] == char2) + break; + return i; +} + +/* + * Return TRUE if operator "op" always works on whole lines. + */ +int op_on_lines(int op) +{ + return opchars[op][2]; +} + +/* + * Get first operator command character. + * Returns 'g' or 'z' if there is another command character. + */ +int get_op_char(int optype) +{ + return opchars[optype][0]; +} + +/* + * Get second operator command character. + */ +int get_extra_op_char(int optype) +{ + return opchars[optype][1]; +} + +/* + * op_shift - handle a shift operation + */ +void op_shift(oparg_T *oap, int curs_top, int amount) +{ + long i; + int first_char; + char_u *s; + int block_col = 0; + + if (u_save((linenr_T)(oap->start.lnum - 1), + (linenr_T)(oap->end.lnum + 1)) == FAIL) + return; + + if (oap->block_mode) + block_col = curwin->w_cursor.col; + + for (i = oap->line_count; --i >= 0; ) { + first_char = *ml_get_curline(); + if (first_char == NUL) /* empty line */ + curwin->w_cursor.col = 0; + else if (oap->block_mode) + shift_block(oap, amount); + else + /* Move the line right if it doesn't start with '#', 'smartindent' + * isn't set or 'cindent' isn't set or '#' isn't in 'cino'. */ + if (first_char != '#' || !preprocs_left()) { + shift_line(oap->op_type == OP_LSHIFT, p_sr, amount, FALSE); + } + ++curwin->w_cursor.lnum; + } + + changed_lines(oap->start.lnum, 0, oap->end.lnum + 1, 0L); + /* The cursor line is not in a closed fold */ + foldOpenCursor(); + + if (oap->block_mode) { + curwin->w_cursor.lnum = oap->start.lnum; + curwin->w_cursor.col = block_col; + } else if (curs_top) { /* put cursor on first line, for ">>" */ + curwin->w_cursor.lnum = oap->start.lnum; + beginline(BL_SOL | BL_FIX); /* shift_line() may have set cursor.col */ + } else + --curwin->w_cursor.lnum; /* put cursor on last line, for ":>" */ + + if (oap->line_count > p_report) { + if (oap->op_type == OP_RSHIFT) + s = (char_u *)">"; + else + s = (char_u *)"<"; + if (oap->line_count == 1) { + if (amount == 1) + sprintf((char *)IObuff, _("1 line %sed 1 time"), s); + else + sprintf((char *)IObuff, _("1 line %sed %d times"), s, amount); + } else { + if (amount == 1) + sprintf((char *)IObuff, _("%" PRId64 " lines %sed 1 time"), + (int64_t)oap->line_count, s); + else + sprintf((char *)IObuff, _("%" PRId64 " lines %sed %d times"), + (int64_t)oap->line_count, s, amount); + } + msg(IObuff); + } + + /* + * Set "'[" and "']" marks. + */ + curbuf->b_op_start = oap->start; + curbuf->b_op_end.lnum = oap->end.lnum; + curbuf->b_op_end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum)); + if (curbuf->b_op_end.col > 0) + --curbuf->b_op_end.col; +} + +/* + * shift the current line one shiftwidth left (if left != 0) or right + * leaves cursor on first blank in the line + */ +void +shift_line ( + int left, + int round, + int amount, + int call_changed_bytes /* call changed_bytes() */ +) +{ + int count; + int i, j; + int p_sw = (int)get_sw_value(curbuf); + + count = get_indent(); /* get current indent */ + + if (round) { /* round off indent */ + i = count / p_sw; /* number of p_sw rounded down */ + j = count % p_sw; /* extra spaces */ + if (j && left) /* first remove extra spaces */ + --amount; + if (left) { + i -= amount; + if (i < 0) + i = 0; + } else + i += amount; + count = i * p_sw; + } else { /* original vi indent */ + if (left) { + count -= p_sw * amount; + if (count < 0) + count = 0; + } else + count += p_sw * amount; + } + + /* Set new indent */ + if (State & VREPLACE_FLAG) + change_indent(INDENT_SET, count, FALSE, NUL, call_changed_bytes); + else + (void)set_indent(count, call_changed_bytes ? SIN_CHANGED : 0); +} + +/* + * Shift one line of the current block one shiftwidth right or left. + * Leaves cursor on first character in block. + */ +static void shift_block(oparg_T *oap, int amount) +{ + int left = (oap->op_type == OP_LSHIFT); + int oldstate = State; + int total; + char_u *newp, *oldp; + int oldcol = curwin->w_cursor.col; + int p_sw = (int)get_sw_value(curbuf); + int p_ts = (int)curbuf->b_p_ts; + struct block_def bd; + int incr; + colnr_T ws_vcol; + int i = 0, j = 0; + int len; + int old_p_ri = p_ri; + + p_ri = 0; /* don't want revins in indent */ + + State = INSERT; /* don't want REPLACE for State */ + block_prep(oap, &bd, curwin->w_cursor.lnum, TRUE); + if (bd.is_short) + return; + + /* total is number of screen columns to be inserted/removed */ + total = amount * p_sw; + oldp = ml_get_curline(); + + if (!left) { + /* + * 1. Get start vcol + * 2. Total ws vcols + * 3. Divvy into TABs & spp + * 4. Construct new string + */ + total += bd.pre_whitesp; /* all virtual WS upto & incl a split TAB */ + ws_vcol = bd.start_vcol - bd.pre_whitesp; + if (bd.startspaces) { + if (has_mbyte) + bd.textstart += (*mb_ptr2len)(bd.textstart); + else + ++bd.textstart; + } + for (; vim_iswhite(*bd.textstart); ) { + incr = lbr_chartabsize_adv(&bd.textstart, (colnr_T)(bd.start_vcol)); + total += incr; + bd.start_vcol += incr; + } + /* OK, now total=all the VWS reqd, and textstart points at the 1st + * non-ws char in the block. */ + if (!curbuf->b_p_et) + i = ((ws_vcol % p_ts) + total) / p_ts; /* number of tabs */ + if (i) + j = ((ws_vcol % p_ts) + total) % p_ts; /* number of spp */ + else + j = total; + /* if we're splitting a TAB, allow for it */ + bd.textcol -= bd.pre_whitesp_c - (bd.startspaces != 0); + len = (int)STRLEN(bd.textstart) + 1; + newp = (char_u *) xmalloc((size_t)(bd.textcol + i + j + len)); + memset(newp, NUL, (size_t)(bd.textcol + i + j + len)); + memmove(newp, oldp, (size_t)bd.textcol); + copy_chars(newp + bd.textcol, (size_t)i, TAB); + copy_spaces(newp + bd.textcol + i, (size_t)j); + /* the end */ + memmove(newp + bd.textcol + i + j, bd.textstart, (size_t)len); + } else { /* left */ + colnr_T destination_col; /* column to which text in block will + be shifted */ + char_u *verbatim_copy_end; /* end of the part of the line which is + copied verbatim */ + colnr_T verbatim_copy_width; /* the (displayed) width of this part + of line */ + unsigned fill; /* nr of spaces that replace a TAB */ + unsigned new_line_len; /* the length of the line after the + block shift */ + size_t block_space_width; + size_t shift_amount; + char_u *non_white = bd.textstart; + colnr_T non_white_col; + + /* + * Firstly, let's find the first non-whitespace character that is + * displayed after the block's start column and the character's column + * number. Also, let's calculate the width of all the whitespace + * characters that are displayed in the block and precede the searched + * non-whitespace character. + */ + + /* If "bd.startspaces" is set, "bd.textstart" points to the character, + * the part of which is displayed at the block's beginning. Let's start + * searching from the next character. */ + if (bd.startspaces) + mb_ptr_adv(non_white); + + /* The character's column is in "bd.start_vcol". */ + non_white_col = bd.start_vcol; + + while (vim_iswhite(*non_white)) { + incr = lbr_chartabsize_adv(&non_white, non_white_col); + non_white_col += incr; + } + + block_space_width = non_white_col - oap->start_vcol; + /* We will shift by "total" or "block_space_width", whichever is less. + */ + shift_amount = (block_space_width < (size_t)total + ? block_space_width : (size_t)total); + + /* The column to which we will shift the text. */ + destination_col = (colnr_T)(non_white_col - shift_amount); + + /* Now let's find out how much of the beginning of the line we can + * reuse without modification. */ + verbatim_copy_end = bd.textstart; + verbatim_copy_width = bd.start_vcol; + + /* If "bd.startspaces" is set, "bd.textstart" points to the character + * preceding the block. We have to subtract its width to obtain its + * column number. */ + if (bd.startspaces) + verbatim_copy_width -= bd.start_char_vcols; + while (verbatim_copy_width < destination_col) { + incr = lbr_chartabsize(verbatim_copy_end, verbatim_copy_width); + if (verbatim_copy_width + incr > destination_col) + break; + verbatim_copy_width += incr; + mb_ptr_adv(verbatim_copy_end); + } + + /* If "destination_col" is different from the width of the initial + * part of the line that will be copied, it means we encountered a tab + * character, which we will have to partly replace with spaces. */ + fill = destination_col - verbatim_copy_width; + + /* The replacement line will consist of: + * - the beginning of the original line up to "verbatim_copy_end", + * - "fill" number of spaces, + * - the rest of the line, pointed to by non_white. */ + new_line_len = (unsigned)(verbatim_copy_end - oldp) + + fill + + (unsigned)STRLEN(non_white) + 1; + + newp = (char_u *) xmalloc((size_t)(new_line_len)); + memmove(newp, oldp, (size_t)(verbatim_copy_end - oldp)); + copy_spaces(newp + (verbatim_copy_end - oldp), (size_t)fill); + STRMOVE(newp + (verbatim_copy_end - oldp) + fill, non_white); + } + /* replace the line */ + ml_replace(curwin->w_cursor.lnum, newp, FALSE); + changed_bytes(curwin->w_cursor.lnum, (colnr_T)bd.textcol); + State = oldstate; + curwin->w_cursor.col = oldcol; + p_ri = old_p_ri; +} + +/* + * Insert string "s" (b_insert ? before : after) block :AKelly + * Caller must prepare for undo. + */ +static void block_insert(oparg_T *oap, char_u *s, int b_insert, struct block_def *bdp) +{ + int p_ts; + int count = 0; /* extra spaces to replace a cut TAB */ + int spaces = 0; /* non-zero if cutting a TAB */ + colnr_T offset; /* pointer along new line */ + unsigned s_len; /* STRLEN(s) */ + char_u *newp, *oldp; /* new, old lines */ + linenr_T lnum; /* loop var */ + int oldstate = State; + + State = INSERT; /* don't want REPLACE for State */ + s_len = (unsigned)STRLEN(s); + + for (lnum = oap->start.lnum + 1; lnum <= oap->end.lnum; lnum++) { + block_prep(oap, bdp, lnum, TRUE); + if (bdp->is_short && b_insert) + continue; /* OP_INSERT, line ends before block start */ + + oldp = ml_get(lnum); + + if (b_insert) { + p_ts = bdp->start_char_vcols; + spaces = bdp->startspaces; + if (spaces != 0) + count = p_ts - 1; /* we're cutting a TAB */ + offset = bdp->textcol; + } else { /* append */ + p_ts = bdp->end_char_vcols; + if (!bdp->is_short) { /* spaces = padding after block */ + spaces = (bdp->endspaces ? p_ts - bdp->endspaces : 0); + if (spaces != 0) + count = p_ts - 1; /* we're cutting a TAB */ + offset = bdp->textcol + bdp->textlen - (spaces != 0); + } else { /* spaces = padding to block edge */ + /* if $ used, just append to EOL (ie spaces==0) */ + if (!bdp->is_MAX) + spaces = (oap->end_vcol - bdp->end_vcol) + 1; + count = spaces; + offset = bdp->textcol + bdp->textlen; + } + } + + newp = (char_u *) xmalloc((size_t)(STRLEN(oldp) + s_len + count + 1)); + + /* copy up to shifted part */ + memmove(newp, oldp, (size_t)(offset)); + oldp += offset; + + /* insert pre-padding */ + copy_spaces(newp + offset, (size_t)spaces); + + /* copy the new text */ + memmove(newp + offset + spaces, s, (size_t)s_len); + offset += s_len; + + if (spaces && !bdp->is_short) { + /* insert post-padding */ + copy_spaces(newp + offset + spaces, (size_t)(p_ts - spaces)); + /* We're splitting a TAB, don't copy it. */ + oldp++; + /* We allowed for that TAB, remember this now */ + count++; + } + + if (spaces > 0) + offset += count; + STRMOVE(newp + offset, oldp); + + ml_replace(lnum, newp, FALSE); + + if (lnum == oap->end.lnum) { + /* Set "']" mark to the end of the block instead of the end of + * the insert in the first line. */ + curbuf->b_op_end.lnum = oap->end.lnum; + curbuf->b_op_end.col = offset; + } + } /* for all lnum */ + + changed_lines(oap->start.lnum + 1, 0, oap->end.lnum + 1, 0L); + + State = oldstate; +} + +/* + * op_reindent - handle reindenting a block of lines. + */ +void op_reindent(oap, how) +oparg_T *oap; +int (*how)(void); +{ + long i; + char_u *l; + int count; + linenr_T first_changed = 0; + linenr_T last_changed = 0; + linenr_T start_lnum = curwin->w_cursor.lnum; + + /* Don't even try when 'modifiable' is off. */ + if (!curbuf->b_p_ma) { + EMSG(_(e_modifiable)); + return; + } + + for (i = oap->line_count; --i >= 0 && !got_int; ) { + /* it's a slow thing to do, so give feedback so there's no worry that + * the computer's just hung. */ + + if (i > 1 + && (i % 50 == 0 || i == oap->line_count - 1) + && oap->line_count > p_report) + smsg((char_u *)_("%" PRId64 " lines to indent... "), (int64_t)i); + + /* + * Be vi-compatible: For lisp indenting the first line is not + * indented, unless there is only one line. + */ + if (i != oap->line_count - 1 || oap->line_count == 1 + || how != get_lisp_indent) { + l = skipwhite(ml_get_curline()); + if (*l == NUL) /* empty or blank line */ + count = 0; + else + count = how(); /* get the indent for this line */ + + if (set_indent(count, SIN_UNDO)) { + /* did change the indent, call changed_lines() later */ + if (first_changed == 0) + first_changed = curwin->w_cursor.lnum; + last_changed = curwin->w_cursor.lnum; + } + } + ++curwin->w_cursor.lnum; + curwin->w_cursor.col = 0; /* make sure it's valid */ + } + + /* put cursor on first non-blank of indented line */ + curwin->w_cursor.lnum = start_lnum; + beginline(BL_SOL | BL_FIX); + + /* Mark changed lines so that they will be redrawn. When Visual + * highlighting was present, need to continue until the last line. When + * there is no change still need to remove the Visual highlighting. */ + if (last_changed != 0) + changed_lines(first_changed, 0, + oap->is_VIsual ? start_lnum + oap->line_count : + last_changed + 1, 0L); + else if (oap->is_VIsual) + redraw_curbuf_later(INVERTED); + + if (oap->line_count > p_report) { + i = oap->line_count - (i + 1); + if (i == 1) + MSG(_("1 line indented ")); + else + smsg((char_u *)_("%" PRId64 " lines indented "), (int64_t)i); + } + /* set '[ and '] marks */ + curbuf->b_op_start = oap->start; + curbuf->b_op_end = oap->end; +} + +/* + * Keep the last expression line here, for repeating. + */ +static char_u *expr_line = NULL; + +/* + * Get an expression for the "\"=expr1" or "CTRL-R =expr1" + * Returns '=' when OK, NUL otherwise. + */ +int get_expr_register(void) +{ + char_u *new_line; + + new_line = getcmdline('=', 0L, 0); + if (new_line == NULL) + return NUL; + if (*new_line == NUL) /* use previous line */ + free(new_line); + else + set_expr_line(new_line); + return '='; +} + +/* + * Set the expression for the '=' register. + * Argument must be an allocated string. + */ +void set_expr_line(char_u *new_line) +{ + free(expr_line); + expr_line = new_line; +} + +/* + * Get the result of the '=' register expression. + * Returns a pointer to allocated memory, or NULL for failure. + */ +char_u *get_expr_line(void) +{ + char_u *expr_copy; + char_u *rv; + static int nested = 0; + + if (expr_line == NULL) + return NULL; + + /* Make a copy of the expression, because evaluating it may cause it to be + * changed. */ + expr_copy = vim_strsave(expr_line); + if (expr_copy == NULL) + return NULL; + + /* When we are invoked recursively limit the evaluation to 10 levels. + * Then return the string as-is. */ + if (nested >= 10) + return expr_copy; + + ++nested; + rv = eval_to_string(expr_copy, NULL, TRUE); + --nested; + free(expr_copy); + return rv; +} + +/* + * Get the '=' register expression itself, without evaluating it. + */ +char_u *get_expr_line_src(void) +{ + if (expr_line == NULL) + return NULL; + return vim_strsave(expr_line); +} + +/* + * Check if 'regname' is a valid name of a yank register. + * Note: There is no check for 0 (default register), caller should do this + */ +int +valid_yank_reg ( + int regname, + int writing /* if TRUE check for writable registers */ +) +{ + if ( (regname > 0 && ASCII_ISALNUM(regname)) + || (!writing && vim_strchr((char_u *) + "/.%#:=" + , regname) != NULL) + || regname == '"' + || regname == '-' + || regname == '_' + ) + return TRUE; + return FALSE; +} + +/* + * Set y_current and y_append, according to the value of "regname". + * Cannot handle the '_' register. + * Must only be called with a valid register name! + * + * If regname is 0 and writing, use register 0 + * If regname is 0 and reading, use previous register + */ +void get_yank_register(int regname, int writing) +{ + int i; + + y_append = FALSE; + if ((regname == 0 || regname == '"') && !writing && y_previous != NULL) { + y_current = y_previous; + return; + } + i = regname; + if (VIM_ISDIGIT(i)) + i -= '0'; + else if (ASCII_ISLOWER(i)) + i = CharOrdLow(i) + 10; + else if (ASCII_ISUPPER(i)) { + i = CharOrdUp(i) + 10; + y_append = TRUE; + } else if (regname == '-') + i = DELETION_REGISTER; + else /* not 0-9, a-z, A-Z or '-': use register 0 */ + i = 0; + y_current = &(y_regs[i]); + if (writing) /* remember the register we write into for do_put() */ + y_previous = y_current; +} + + +/* + * Obtain the contents of a "normal" register. The register is made empty. + * The returned pointer has allocated memory, use put_register() later. + */ +void * +get_register ( + int name, + int copy /* make a copy, if FALSE make register empty. */ +) +{ + get_yank_register(name, 0); + + struct yankreg *reg = xmalloc(sizeof(struct yankreg)); + *reg = *y_current; + if (copy) { + if (reg->y_size == 0) { + reg->y_array = NULL; + } else { + reg->y_array = xmalloc(reg->y_size * sizeof(char_u *)); + for (linenr_T i = 0; i < reg->y_size; ++i) { + reg->y_array[i] = vim_strsave(y_current->y_array[i]); + } + } + } else + y_current->y_array = NULL; + + return (void *)reg; +} + +/* + * Put "reg" into register "name". Free any previous contents and "reg". + */ +void put_register(int name, void *reg) +{ + get_yank_register(name, 0); + free_yank_all(); + *y_current = *(struct yankreg *)reg; + free(reg); + +} + +/* + * return TRUE if the current yank register has type MLINE + */ +int yank_register_mline(int regname) +{ + if (regname != 0 && !valid_yank_reg(regname, FALSE)) + return FALSE; + if (regname == '_') /* black hole is always empty */ + return FALSE; + get_yank_register(regname, FALSE); + return y_current->y_type == MLINE; +} + +/* + * Start or stop recording into a yank register. + * + * Return FAIL for failure, OK otherwise. + */ +int do_record(int c) +{ + char_u *p; + static int regname; + struct yankreg *old_y_previous, *old_y_current; + int retval; + + if (Recording == FALSE) { /* start recording */ + /* registers 0-9, a-z and " are allowed */ + if (c < 0 || (!ASCII_ISALNUM(c) && c != '"')) + retval = FAIL; + else { + Recording = TRUE; + showmode(); + regname = c; + retval = OK; + } + } else { /* stop recording */ + /* + * Get the recorded key hits. K_SPECIAL and CSI will be escaped, this + * needs to be removed again to put it in a register. exec_reg then + * adds the escaping back later. + */ + Recording = FALSE; + MSG(""); + p = get_recorded(); + if (p == NULL) + retval = FAIL; + else { + /* Remove escaping for CSI and K_SPECIAL in multi-byte chars. */ + vim_unescape_csi(p); + + /* + * We don't want to change the default register here, so save and + * restore the current register name. + */ + old_y_previous = y_previous; + old_y_current = y_current; + + retval = stuff_yank(regname, p); + + y_previous = old_y_previous; + y_current = old_y_current; + } + } + return retval; +} + +/* + * Stuff string "p" into yank register "regname" as a single line (append if + * uppercase). "p" must have been alloced. + * + * return FAIL for failure, OK otherwise + */ +static int stuff_yank(int regname, char_u *p) +{ + /* check for read-only register */ + if (regname != 0 && !valid_yank_reg(regname, TRUE)) { + free(p); + return FAIL; + } + if (regname == '_') { /* black hole: don't do anything */ + free(p); + return OK; + } + get_yank_register(regname, TRUE); + if (y_append && y_current->y_array != NULL) { + char_u **pp = &(y_current->y_array[y_current->y_size - 1]); + char_u *lp = xmalloc(STRLEN(*pp) + STRLEN(p) + 1); + STRCPY(lp, *pp); + // TODO(philix): use xstpcpy() in stuff_yank() + STRCAT(lp, p); + free(p); + free(*pp); + *pp = lp; + } else { + free_yank_all(); + y_current->y_array = (char_u **)alloc((unsigned)sizeof(char_u *)); + y_current->y_array[0] = p; + y_current->y_size = 1; + y_current->y_type = MCHAR; /* used to be MLINE, why? */ + } + return OK; +} + +static int execreg_lastc = NUL; + +/* + * execute a yank register: copy it into the stuff buffer + * + * return FAIL for failure, OK otherwise + */ +int +do_execreg ( + int regname, + int colon, /* insert ':' before each line */ + int addcr, /* always add '\n' to end of line */ + int silent /* set "silent" flag in typeahead buffer */ +) +{ + long i; + char_u *p; + int retval = OK; + int remap; + + if (regname == '@') { /* repeat previous one */ + if (execreg_lastc == NUL) { + EMSG(_("E748: No previously used register")); + return FAIL; + } + regname = execreg_lastc; + } + /* check for valid regname */ + if (regname == '%' || regname == '#' || !valid_yank_reg(regname, FALSE)) { + emsg_invreg(regname); + return FAIL; + } + execreg_lastc = regname; + + + if (regname == '_') /* black hole: don't stuff anything */ + return OK; + + if (regname == ':') { /* use last command line */ + if (last_cmdline == NULL) { + EMSG(_(e_nolastcmd)); + return FAIL; + } + free(new_last_cmdline); /* don't keep the cmdline containing @: */ + new_last_cmdline = NULL; + /* Escape all control characters with a CTRL-V */ + p = vim_strsave_escaped_ext( + last_cmdline, + (char_u *) + "\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037", + Ctrl_V, FALSE); + if (p != NULL) { + /* When in Visual mode "'<,'>" will be prepended to the command. + * Remove it when it's already there. */ + if (VIsual_active && STRNCMP(p, "'<,'>", 5) == 0) + retval = put_in_typebuf(p + 5, TRUE, TRUE, silent); + else + retval = put_in_typebuf(p, TRUE, TRUE, silent); + } + free(p); + } else if (regname == '=') { + p = get_expr_line(); + if (p == NULL) + return FAIL; + retval = put_in_typebuf(p, TRUE, colon, silent); + free(p); + } else if (regname == '.') { /* use last inserted text */ + p = get_last_insert_save(); + if (p == NULL) { + EMSG(_(e_noinstext)); + return FAIL; + } + retval = put_in_typebuf(p, FALSE, colon, silent); + free(p); + } else { + get_yank_register(regname, FALSE); + if (y_current->y_array == NULL) + return FAIL; + + /* Disallow remaping for ":@r". */ + remap = colon ? REMAP_NONE : REMAP_YES; + + /* + * Insert lines into typeahead buffer, from last one to first one. + */ + put_reedit_in_typebuf(silent); + for (i = y_current->y_size; --i >= 0; ) { + char_u *escaped; + + /* insert NL between lines and after last line if type is MLINE */ + if (y_current->y_type == MLINE || i < y_current->y_size - 1 + || addcr) { + if (ins_typebuf((char_u *)"\n", remap, 0, TRUE, silent) == FAIL) + return FAIL; + } + escaped = vim_strsave_escape_csi(y_current->y_array[i]); + if (escaped == NULL) + return FAIL; + retval = ins_typebuf(escaped, remap, 0, TRUE, silent); + free(escaped); + if (retval == FAIL) + return FAIL; + if (colon && ins_typebuf((char_u *)":", remap, 0, TRUE, silent) + == FAIL) + return FAIL; + } + Exec_reg = TRUE; /* disable the 'q' command */ + } + return retval; +} + +/* + * If "restart_edit" is not zero, put it in the typeahead buffer, so that it's + * used only after other typeahead has been processed. + */ +static void put_reedit_in_typebuf(int silent) +{ + char_u buf[3]; + + if (restart_edit != NUL) { + if (restart_edit == 'V') { + buf[0] = 'g'; + buf[1] = 'R'; + buf[2] = NUL; + } else { + buf[0] = restart_edit == 'I' ? 'i' : restart_edit; + buf[1] = NUL; + } + if (ins_typebuf(buf, REMAP_NONE, 0, TRUE, silent) == OK) + restart_edit = NUL; + } +} + +/* + * Insert register contents "s" into the typeahead buffer, so that it will be + * executed again. + * When "esc" is TRUE it is to be taken literally: Escape CSI characters and + * no remapping. + */ +static int +put_in_typebuf ( + char_u *s, + int esc, + int colon, /* add ':' before the line */ + int silent +) +{ + int retval = OK; + + put_reedit_in_typebuf(silent); + if (colon) + retval = ins_typebuf((char_u *)"\n", REMAP_NONE, 0, TRUE, silent); + if (retval == OK) { + char_u *p; + + if (esc) + p = vim_strsave_escape_csi(s); + else + p = s; + if (p == NULL) + retval = FAIL; + else + retval = ins_typebuf(p, esc ? REMAP_NONE : REMAP_YES, + 0, TRUE, silent); + if (esc) + free(p); + } + if (colon && retval == OK) + retval = ins_typebuf((char_u *)":", REMAP_NONE, 0, TRUE, silent); + return retval; +} + +/* + * Insert a yank register: copy it into the Read buffer. + * Used by CTRL-R command and middle mouse button in insert mode. + * + * return FAIL for failure, OK otherwise + */ +int +insert_reg ( + int regname, + int literally /* insert literally, not as if typed */ +) +{ + long i; + int retval = OK; + char_u *arg; + int allocated; + + /* + * It is possible to get into an endless loop by having CTRL-R a in + * register a and then, in insert mode, doing CTRL-R a. + * If you hit CTRL-C, the loop will be broken here. + */ + ui_breakcheck(); + if (got_int) + return FAIL; + + /* check for valid regname */ + if (regname != NUL && !valid_yank_reg(regname, FALSE)) + return FAIL; + + + if (regname == '.') /* insert last inserted text */ + retval = stuff_inserted(NUL, 1L, TRUE); + else if (get_spec_reg(regname, &arg, &allocated, TRUE)) { + if (arg == NULL) + return FAIL; + stuffescaped(arg, literally); + if (allocated) + free(arg); + } else { /* name or number register */ + get_yank_register(regname, FALSE); + if (y_current->y_array == NULL) + retval = FAIL; + else { + for (i = 0; i < y_current->y_size; ++i) { + stuffescaped(y_current->y_array[i], literally); + /* + * Insert a newline between lines and after last line if + * y_type is MLINE. + */ + if (y_current->y_type == MLINE || i < y_current->y_size - 1) + stuffcharReadbuff('\n'); + } + } + } + + return retval; +} + +/* + * Stuff a string into the typeahead buffer, such that edit() will insert it + * literally ("literally" TRUE) or interpret is as typed characters. + */ +static void stuffescaped(char_u *arg, int literally) +{ + int c; + char_u *start; + + while (*arg != NUL) { + /* Stuff a sequence of normal ASCII characters, that's fast. Also + * stuff K_SPECIAL to get the effect of a special key when "literally" + * is TRUE. */ + start = arg; + while ((*arg >= ' ' + && *arg < DEL /* EBCDIC: chars above space are normal */ + ) + || (*arg == K_SPECIAL && !literally)) + ++arg; + if (arg > start) + stuffReadbuffLen(start, (long)(arg - start)); + + /* stuff a single special character */ + if (*arg != NUL) { + if (has_mbyte) + c = mb_cptr2char_adv(&arg); + else + c = *arg++; + if (literally && ((c < ' ' && c != TAB) || c == DEL)) + stuffcharReadbuff(Ctrl_V); + stuffcharReadbuff(c); + } + } +} + +/* + * If "regname" is a special register, return TRUE and store a pointer to its + * value in "argp". + */ +int +get_spec_reg ( + int regname, + char_u **argp, + int *allocated, /* return: TRUE when value was allocated */ + int errmsg /* give error message when failing */ +) +{ + int cnt; + + *argp = NULL; + *allocated = FALSE; + switch (regname) { + case '%': /* file name */ + if (errmsg) + check_fname(); /* will give emsg if not set */ + *argp = curbuf->b_fname; + return TRUE; + + case '#': /* alternate file name */ + *argp = getaltfname(errmsg); /* may give emsg if not set */ + return TRUE; + + case '=': /* result of expression */ + *argp = get_expr_line(); + *allocated = TRUE; + return TRUE; + + case ':': /* last command line */ + if (last_cmdline == NULL && errmsg) + EMSG(_(e_nolastcmd)); + *argp = last_cmdline; + return TRUE; + + case '/': /* last search-pattern */ + if (last_search_pat() == NULL && errmsg) + EMSG(_(e_noprevre)); + *argp = last_search_pat(); + return TRUE; + + case '.': /* last inserted text */ + *argp = get_last_insert_save(); + *allocated = TRUE; + if (*argp == NULL && errmsg) + EMSG(_(e_noinstext)); + return TRUE; + + case Ctrl_F: /* Filename under cursor */ + case Ctrl_P: /* Path under cursor, expand via "path" */ + if (!errmsg) + return FALSE; + *argp = file_name_at_cursor(FNAME_MESS | FNAME_HYP + | (regname == Ctrl_P ? FNAME_EXP : 0), 1L, NULL); + *allocated = TRUE; + return TRUE; + + case Ctrl_W: /* word under cursor */ + case Ctrl_A: /* WORD (mnemonic All) under cursor */ + if (!errmsg) + return FALSE; + cnt = find_ident_under_cursor(argp, regname == Ctrl_W + ? (FIND_IDENT|FIND_STRING) : FIND_STRING); + *argp = cnt ? vim_strnsave(*argp, cnt) : NULL; + *allocated = TRUE; + return TRUE; + + case '_': /* black hole: always empty */ + *argp = (char_u *)""; + return TRUE; + } + + return FALSE; +} + +/* + * Paste a yank register into the command line. + * Only for non-special registers. + * Used by CTRL-R command in command-line mode + * insert_reg() can't be used here, because special characters from the + * register contents will be interpreted as commands. + * + * return FAIL for failure, OK otherwise + */ +int +cmdline_paste_reg ( + int regname, + int literally, /* Insert text literally instead of "as typed" */ + int remcr /* don't add trailing CR */ +) +{ + long i; + + get_yank_register(regname, FALSE); + if (y_current->y_array == NULL) + return FAIL; + + for (i = 0; i < y_current->y_size; ++i) { + cmdline_paste_str(y_current->y_array[i], literally); + + /* Insert ^M between lines and after last line if type is MLINE. + * Don't do this when "remcr" is TRUE and the next line is empty. */ + if (y_current->y_type == MLINE + || (i < y_current->y_size - 1 + && !(remcr + && i == y_current->y_size - 2 + && *y_current->y_array[i + 1] == NUL))) + cmdline_paste_str((char_u *)"\r", literally); + + /* Check for CTRL-C, in case someone tries to paste a few thousand + * lines and gets bored. */ + ui_breakcheck(); + if (got_int) + return FAIL; + } + return OK; +} + + +/* + * Handle a delete operation. + * + * Return FAIL if undo failed, OK otherwise. + */ +int op_delete(oparg_T *oap) +{ + int n; + linenr_T lnum; + char_u *ptr; + char_u *newp, *oldp; + struct block_def bd; + linenr_T old_lcount = curbuf->b_ml.ml_line_count; + int did_yank = FALSE; + int orig_regname = oap->regname; + + if (curbuf->b_ml.ml_flags & ML_EMPTY) /* nothing to do */ + return OK; + + /* Nothing to delete, return here. Do prepare undo, for op_change(). */ + if (oap->empty) + return u_save_cursor(); + + if (!curbuf->b_p_ma) { + EMSG(_(e_modifiable)); + return FAIL; + } + + + if (has_mbyte) + mb_adjust_opend(oap); + + /* + * Imitate the strange Vi behaviour: If the delete spans more than one + * line and motion_type == MCHAR and the result is a blank line, make the + * delete linewise. Don't do this for the change command or Visual mode. + */ + if ( oap->motion_type == MCHAR + && !oap->is_VIsual + && !oap->block_mode + && oap->line_count > 1 + && oap->motion_force == NUL + && oap->op_type == OP_DELETE) { + ptr = ml_get(oap->end.lnum) + oap->end.col; + if (*ptr != NUL) + ptr += oap->inclusive; + ptr = skipwhite(ptr); + if (*ptr == NUL && inindent(0)) + oap->motion_type = MLINE; + } + + /* + * Check for trying to delete (e.g. "D") in an empty line. + * Note: For the change operator it is ok. + */ + if ( oap->motion_type == MCHAR + && oap->line_count == 1 + && oap->op_type == OP_DELETE + && *ml_get(oap->start.lnum) == NUL) { + /* + * It's an error to operate on an empty region, when 'E' included in + * 'cpoptions' (Vi compatible). + */ + if (virtual_op) + /* Virtual editing: Nothing gets deleted, but we set the '[ and '] + * marks as if it happened. */ + goto setmarks; + if (vim_strchr(p_cpo, CPO_EMPTYREGION) != NULL) + beep_flush(); + return OK; + } + + /* + * Do a yank of whatever we're about to delete. + * If a yank register was specified, put the deleted text into that + * register. For the black hole register '_' don't yank anything. + */ + if (oap->regname != '_') { + if (oap->regname != 0) { + /* check for read-only register */ + if (!valid_yank_reg(oap->regname, TRUE)) { + beep_flush(); + return OK; + } + get_yank_register(oap->regname, TRUE); /* yank into specif'd reg. */ + if (op_yank(oap, TRUE, FALSE) == OK) /* yank without message */ + did_yank = TRUE; + } + + /* + * Put deleted text into register 1 and shift number registers if the + * delete contains a line break, or when a regname has been specified. + * Use the register name from before adjust_clip_reg() may have + * changed it. + */ + if (orig_regname != 0 || oap->motion_type == MLINE + || oap->line_count > 1 || oap->use_reg_one) { + y_current = &y_regs[9]; + free_yank_all(); /* free register nine */ + for (n = 9; n > 1; --n) + y_regs[n] = y_regs[n - 1]; + y_previous = y_current = &y_regs[1]; + y_regs[1].y_array = NULL; /* set register one to empty */ + if (op_yank(oap, TRUE, FALSE) == OK) + did_yank = TRUE; + } + + /* Yank into small delete register when no named register specified + * and the delete is within one line. */ + if (( + oap->regname == 0) && oap->motion_type != MLINE + && oap->line_count == 1) { + oap->regname = '-'; + get_yank_register(oap->regname, TRUE); + if (op_yank(oap, TRUE, FALSE) == OK) + did_yank = TRUE; + oap->regname = 0; + } + + /* + * If there's too much stuff to fit in the yank register, then get a + * confirmation before doing the delete. This is crude, but simple. + * And it avoids doing a delete of something we can't put back if we + * want. + */ + if (!did_yank) { + int msg_silent_save = msg_silent; + + msg_silent = 0; /* must display the prompt */ + n = ask_yesno((char_u *)_("cannot yank; delete anyway"), TRUE); + msg_silent = msg_silent_save; + if (n != 'y') { + EMSG(_(e_abort)); + return FAIL; + } + } + } + + /* + * block mode delete + */ + if (oap->block_mode) { + if (u_save((linenr_T)(oap->start.lnum - 1), + (linenr_T)(oap->end.lnum + 1)) == FAIL) + return FAIL; + + for (lnum = curwin->w_cursor.lnum; lnum <= oap->end.lnum; ++lnum) { + block_prep(oap, &bd, lnum, TRUE); + if (bd.textlen == 0) /* nothing to delete */ + continue; + + /* Adjust cursor position for tab replaced by spaces and 'lbr'. */ + if (lnum == curwin->w_cursor.lnum) { + curwin->w_cursor.col = bd.textcol + bd.startspaces; + curwin->w_cursor.coladd = 0; + } + + /* n == number of chars deleted + * If we delete a TAB, it may be replaced by several characters. + * Thus the number of characters may increase! + */ + n = bd.textlen - bd.startspaces - bd.endspaces; + oldp = ml_get(lnum); + newp = (char_u *) xmalloc((size_t)(STRLEN(oldp) + 1 - n)); + /* copy up to deleted part */ + memmove(newp, oldp, (size_t)bd.textcol); + /* insert spaces */ + copy_spaces(newp + bd.textcol, + (size_t)(bd.startspaces + bd.endspaces)); + /* copy the part after the deleted part */ + oldp += bd.textcol + bd.textlen; + STRMOVE(newp + bd.textcol + bd.startspaces + bd.endspaces, oldp); + /* replace the line */ + ml_replace(lnum, newp, FALSE); + } + + check_cursor_col(); + changed_lines(curwin->w_cursor.lnum, curwin->w_cursor.col, + oap->end.lnum + 1, 0L); + oap->line_count = 0; /* no lines deleted */ + } else if (oap->motion_type == MLINE) { + if (oap->op_type == OP_CHANGE) { + /* Delete the lines except the first one. Temporarily move the + * cursor to the next line. Save the current line number, if the + * last line is deleted it may be changed. + */ + if (oap->line_count > 1) { + lnum = curwin->w_cursor.lnum; + ++curwin->w_cursor.lnum; + del_lines((long)(oap->line_count - 1), TRUE); + curwin->w_cursor.lnum = lnum; + } + if (u_save_cursor() == FAIL) + return FAIL; + if (curbuf->b_p_ai) { /* don't delete indent */ + beginline(BL_WHITE); /* cursor on first non-white */ + did_ai = TRUE; /* delete the indent when ESC hit */ + ai_col = curwin->w_cursor.col; + } else + beginline(0); /* cursor in column 0 */ + truncate_line(FALSE); /* delete the rest of the line */ + /* leave cursor past last char in line */ + if (oap->line_count > 1) + u_clearline(); /* "U" command not possible after "2cc" */ + } else { + del_lines(oap->line_count, TRUE); + beginline(BL_WHITE | BL_FIX); + u_clearline(); /* "U" command not possible after "dd" */ + } + } else { + if (virtual_op) { + int endcol = 0; + + /* For virtualedit: break the tabs that are partly included. */ + if (gchar_pos(&oap->start) == '\t') { + if (u_save_cursor() == FAIL) /* save first line for undo */ + return FAIL; + if (oap->line_count == 1) + endcol = getviscol2(oap->end.col, oap->end.coladd); + coladvance_force(getviscol2(oap->start.col, oap->start.coladd)); + oap->start = curwin->w_cursor; + if (oap->line_count == 1) { + coladvance(endcol); + oap->end.col = curwin->w_cursor.col; + oap->end.coladd = curwin->w_cursor.coladd; + curwin->w_cursor = oap->start; + } + } + + /* Break a tab only when it's included in the area. */ + if (gchar_pos(&oap->end) == '\t' + && (int)oap->end.coladd < oap->inclusive) { + /* save last line for undo */ + if (u_save((linenr_T)(oap->end.lnum - 1), + (linenr_T)(oap->end.lnum + 1)) == FAIL) + return FAIL; + curwin->w_cursor = oap->end; + coladvance_force(getviscol2(oap->end.col, oap->end.coladd)); + oap->end = curwin->w_cursor; + curwin->w_cursor = oap->start; + } + } + + if (oap->line_count == 1) { /* delete characters within one line */ + if (u_save_cursor() == FAIL) /* save line for undo */ + return FAIL; + + /* if 'cpoptions' contains '$', display '$' at end of change */ + if ( vim_strchr(p_cpo, CPO_DOLLAR) != NULL + && oap->op_type == OP_CHANGE + && oap->end.lnum == curwin->w_cursor.lnum + && !oap->is_VIsual + ) + display_dollar(oap->end.col - !oap->inclusive); + + n = oap->end.col - oap->start.col + 1 - !oap->inclusive; + + if (virtual_op) { + /* fix up things for virtualedit-delete: + * break the tabs which are going to get in our way + */ + char_u *curline = ml_get_curline(); + int len = (int)STRLEN(curline); + + if (oap->end.coladd != 0 + && (int)oap->end.col >= len - 1 + && !(oap->start.coladd && (int)oap->end.col >= len - 1)) + n++; + /* Delete at least one char (e.g, when on a control char). */ + if (n == 0 && oap->start.coladd != oap->end.coladd) + n = 1; + + /* When deleted a char in the line, reset coladd. */ + if (gchar_cursor() != NUL) + curwin->w_cursor.coladd = 0; + } + if (oap->op_type == OP_DELETE + && oap->inclusive + && oap->end.lnum == curbuf->b_ml.ml_line_count + && n > (int)STRLEN(ml_get(oap->end.lnum))) { + /* Special case: gH<Del> deletes the last line. */ + del_lines(1L, FALSE); + } else { + (void)del_bytes((long)n, !virtual_op, oap->op_type == OP_DELETE + && !oap->is_VIsual + ); + } + } else { /* delete characters between lines */ + pos_T curpos; + int delete_last_line; + + /* save deleted and changed lines for undo */ + if (u_save((linenr_T)(curwin->w_cursor.lnum - 1), + (linenr_T)(curwin->w_cursor.lnum + oap->line_count)) == FAIL) + return FAIL; + + delete_last_line = (oap->end.lnum == curbuf->b_ml.ml_line_count); + truncate_line(TRUE); /* delete from cursor to end of line */ + + curpos = curwin->w_cursor; /* remember curwin->w_cursor */ + ++curwin->w_cursor.lnum; + del_lines((long)(oap->line_count - 2), FALSE); + + if (delete_last_line) + oap->end.lnum = curbuf->b_ml.ml_line_count; + + n = (oap->end.col + 1 - !oap->inclusive); + if (oap->inclusive && delete_last_line + && n > (int)STRLEN(ml_get(oap->end.lnum))) { + /* Special case: gH<Del> deletes the last line. */ + del_lines(1L, FALSE); + curwin->w_cursor = curpos; /* restore curwin->w_cursor */ + if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) + curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; + } else { + /* delete from start of line until op_end */ + curwin->w_cursor.col = 0; + (void)del_bytes((long)n, !virtual_op, oap->op_type == OP_DELETE + && !oap->is_VIsual + ); + curwin->w_cursor = curpos; /* restore curwin->w_cursor */ + } + if (curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) + (void)do_join(2, FALSE, FALSE, FALSE); + } + } + + msgmore(curbuf->b_ml.ml_line_count - old_lcount); + +setmarks: + if (oap->block_mode) { + curbuf->b_op_end.lnum = oap->end.lnum; + curbuf->b_op_end.col = oap->start.col; + } else + curbuf->b_op_end = oap->start; + curbuf->b_op_start = oap->start; + + return OK; +} + +/* + * Adjust end of operating area for ending on a multi-byte character. + * Used for deletion. + */ +static void mb_adjust_opend(oparg_T *oap) +{ + char_u *p; + + if (oap->inclusive) { + p = ml_get(oap->end.lnum); + oap->end.col += mb_tail_off(p, p + oap->end.col); + } +} + +/* + * Put character 'c' at position 'lp' + */ +static inline void pchar(pos_T lp, int c) +{ + *(ml_get_buf(curbuf, lp.lnum, TRUE) + lp.col) = c;; +} + +/* + * Replace a whole area with one character. + */ +int op_replace(oparg_T *oap, int c) +{ + int n, numc; + int num_chars; + char_u *newp, *oldp; + size_t oldlen; + struct block_def bd; + char_u *after_p = NULL; + int had_ctrl_v_cr = (c == -1 || c == -2); + + if ((curbuf->b_ml.ml_flags & ML_EMPTY ) || oap->empty) + return OK; /* nothing to do */ + + if (had_ctrl_v_cr) + c = (c == -1 ? '\r' : '\n'); + + if (has_mbyte) + mb_adjust_opend(oap); + + if (u_save((linenr_T)(oap->start.lnum - 1), + (linenr_T)(oap->end.lnum + 1)) == FAIL) + return FAIL; + + /* + * block mode replace + */ + if (oap->block_mode) { + bd.is_MAX = (curwin->w_curswant == MAXCOL); + for (; curwin->w_cursor.lnum <= oap->end.lnum; ++curwin->w_cursor.lnum) { + curwin->w_cursor.col = 0; /* make sure cursor position is valid */ + block_prep(oap, &bd, curwin->w_cursor.lnum, TRUE); + if (bd.textlen == 0 && (!virtual_op || bd.is_MAX)) + continue; /* nothing to replace */ + + /* n == number of extra chars required + * If we split a TAB, it may be replaced by several characters. + * Thus the number of characters may increase! + */ + /* If the range starts in virtual space, count the initial + * coladd offset as part of "startspaces" */ + if (virtual_op && bd.is_short && *bd.textstart == NUL) { + pos_T vpos; + + vpos.lnum = curwin->w_cursor.lnum; + getvpos(&vpos, oap->start_vcol); + bd.startspaces += vpos.coladd; + n = bd.startspaces; + } else + /* allow for pre spaces */ + n = (bd.startspaces ? bd.start_char_vcols - 1 : 0); + + /* allow for post spp */ + n += (bd.endspaces + && !bd.is_oneChar + && bd.end_char_vcols > 0) ? bd.end_char_vcols - 1 : 0; + /* Figure out how many characters to replace. */ + numc = oap->end_vcol - oap->start_vcol + 1; + if (bd.is_short && (!virtual_op || bd.is_MAX)) + numc -= (oap->end_vcol - bd.end_vcol) + 1; + + /* A double-wide character can be replaced only up to half the + * times. */ + if ((*mb_char2cells)(c) > 1) { + if ((numc & 1) && !bd.is_short) { + ++bd.endspaces; + ++n; + } + numc = numc / 2; + } + + /* Compute bytes needed, move character count to num_chars. */ + num_chars = numc; + numc *= (*mb_char2len)(c); + /* oldlen includes textlen, so don't double count */ + n += numc - bd.textlen; + + oldp = ml_get_curline(); + oldlen = STRLEN(oldp); + newp = (char_u *) xmalloc((size_t)(oldlen + 1 + n)); + memset(newp, NUL, (size_t)(oldlen + 1 + n)); + /* copy up to deleted part */ + memmove(newp, oldp, (size_t)bd.textcol); + oldp += bd.textcol + bd.textlen; + /* insert pre-spaces */ + copy_spaces(newp + bd.textcol, (size_t)bd.startspaces); + /* insert replacement chars CHECK FOR ALLOCATED SPACE */ + /* -1/-2 is used for entering CR literally. */ + if (had_ctrl_v_cr || (c != '\r' && c != '\n')) { + if (has_mbyte) { + n = (int)STRLEN(newp); + while (--num_chars >= 0) + n += (*mb_char2bytes)(c, newp + n); + } else + copy_chars(newp + STRLEN(newp), (size_t)numc, c); + if (!bd.is_short) { + /* insert post-spaces */ + copy_spaces(newp + STRLEN(newp), (size_t)bd.endspaces); + /* copy the part after the changed part */ + STRMOVE(newp + STRLEN(newp), oldp); + } + } else { + /* Replacing with \r or \n means splitting the line. */ + after_p = (char_u *) xmalloc((size_t)(oldlen + 1 + n - STRLEN(newp))); + STRMOVE(after_p, oldp); + } + /* replace the line */ + ml_replace(curwin->w_cursor.lnum, newp, FALSE); + if (after_p != NULL) { + ml_append(curwin->w_cursor.lnum++, after_p, 0, FALSE); + appended_lines_mark(curwin->w_cursor.lnum, 1L); + oap->end.lnum++; + free(after_p); + } + } + } else { + /* + * MCHAR and MLINE motion replace. + */ + if (oap->motion_type == MLINE) { + oap->start.col = 0; + curwin->w_cursor.col = 0; + oap->end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum)); + if (oap->end.col) + --oap->end.col; + } else if (!oap->inclusive) + dec(&(oap->end)); + + while (ltoreq(curwin->w_cursor, oap->end)) { + n = gchar_cursor(); + if (n != NUL) { + if ((*mb_char2len)(c) > 1 || (*mb_char2len)(n) > 1) { + /* This is slow, but it handles replacing a single-byte + * with a multi-byte and the other way around. */ + if (curwin->w_cursor.lnum == oap->end.lnum) + oap->end.col += (*mb_char2len)(c) - (*mb_char2len)(n); + n = State; + State = REPLACE; + ins_char(c); + State = n; + /* Backup to the replaced character. */ + dec_cursor(); + } else { + if (n == TAB) { + int end_vcol = 0; + + if (curwin->w_cursor.lnum == oap->end.lnum) { + /* oap->end has to be recalculated when + * the tab breaks */ + end_vcol = getviscol2(oap->end.col, + oap->end.coladd); + } + coladvance_force(getviscol()); + if (curwin->w_cursor.lnum == oap->end.lnum) + getvpos(&oap->end, end_vcol); + } + pchar(curwin->w_cursor, c); + } + } else if (virtual_op && curwin->w_cursor.lnum == oap->end.lnum) { + int virtcols = oap->end.coladd; + + if (curwin->w_cursor.lnum == oap->start.lnum + && oap->start.col == oap->end.col && oap->start.coladd) + virtcols -= oap->start.coladd; + + /* oap->end has been trimmed so it's effectively inclusive; + * as a result an extra +1 must be counted so we don't + * trample the NUL byte. */ + coladvance_force(getviscol2(oap->end.col, oap->end.coladd) + 1); + curwin->w_cursor.col -= (virtcols + 1); + for (; virtcols >= 0; virtcols--) { + pchar(curwin->w_cursor, c); + if (inc(&curwin->w_cursor) == -1) + break; + } + } + + /* Advance to next character, stop at the end of the file. */ + if (inc_cursor() == -1) + break; + } + } + + curwin->w_cursor = oap->start; + check_cursor(); + changed_lines(oap->start.lnum, oap->start.col, oap->end.lnum + 1, 0L); + + /* Set "'[" and "']" marks. */ + curbuf->b_op_start = oap->start; + curbuf->b_op_end = oap->end; + + return OK; +} + +static int swapchars(int op_type, pos_T *pos, int length); + +/* + * Handle the (non-standard vi) tilde operator. Also for "gu", "gU" and "g?". + */ +void op_tilde(oparg_T *oap) +{ + pos_T pos; + struct block_def bd; + int did_change = FALSE; + + if (u_save((linenr_T)(oap->start.lnum - 1), + (linenr_T)(oap->end.lnum + 1)) == FAIL) + return; + + pos = oap->start; + if (oap->block_mode) { /* Visual block mode */ + for (; pos.lnum <= oap->end.lnum; ++pos.lnum) { + int one_change; + + block_prep(oap, &bd, pos.lnum, FALSE); + pos.col = bd.textcol; + one_change = swapchars(oap->op_type, &pos, bd.textlen); + did_change |= one_change; + + } + if (did_change) + changed_lines(oap->start.lnum, 0, oap->end.lnum + 1, 0L); + } else { /* not block mode */ + if (oap->motion_type == MLINE) { + oap->start.col = 0; + pos.col = 0; + oap->end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum)); + if (oap->end.col) + --oap->end.col; + } else if (!oap->inclusive) + dec(&(oap->end)); + + if (pos.lnum == oap->end.lnum) + did_change = swapchars(oap->op_type, &pos, + oap->end.col - pos.col + 1); + else + for (;; ) { + did_change |= swapchars(oap->op_type, &pos, + pos.lnum == oap->end.lnum ? oap->end.col + 1 : + (int)STRLEN(ml_get_pos(&pos))); + if (ltoreq(oap->end, pos) || inc(&pos) == -1) + break; + } + if (did_change) { + changed_lines(oap->start.lnum, oap->start.col, oap->end.lnum + 1, + 0L); + } + } + + if (!did_change && oap->is_VIsual) + /* No change: need to remove the Visual selection */ + redraw_curbuf_later(INVERTED); + + /* + * Set '[ and '] marks. + */ + curbuf->b_op_start = oap->start; + curbuf->b_op_end = oap->end; + + if (oap->line_count > p_report) { + if (oap->line_count == 1) + MSG(_("1 line changed")); + else + smsg((char_u *)_("%" PRId64 " lines changed"), (int64_t)oap->line_count); + } +} + +/* + * Invoke swapchar() on "length" bytes at position "pos". + * "pos" is advanced to just after the changed characters. + * "length" is rounded up to include the whole last multi-byte character. + * Also works correctly when the number of bytes changes. + * Returns TRUE if some character was changed. + */ +static int swapchars(int op_type, pos_T *pos, int length) +{ + int todo; + int did_change = 0; + + for (todo = length; todo > 0; --todo) { + if (has_mbyte) { + int len = (*mb_ptr2len)(ml_get_pos(pos)); + + /* we're counting bytes, not characters */ + if (len > 0) + todo -= len - 1; + } + did_change |= swapchar(op_type, pos); + if (inc(pos) == -1) /* at end of file */ + break; + } + return did_change; +} + +/* + * If op_type == OP_UPPER: make uppercase, + * if op_type == OP_LOWER: make lowercase, + * if op_type == OP_ROT13: do rot13 encoding, + * else swap case of character at 'pos' + * returns TRUE when something actually changed. + */ +int swapchar(int op_type, pos_T *pos) +{ + int c; + int nc; + + c = gchar_pos(pos); + + /* Only do rot13 encoding for ASCII characters. */ + if (c >= 0x80 && op_type == OP_ROT13) + return FALSE; + + if (op_type == OP_UPPER && c == 0xdf + && (enc_latin1like || STRCMP(p_enc, "iso-8859-2") == 0)) { + pos_T sp = curwin->w_cursor; + + /* Special handling of German sharp s: change to "SS". */ + curwin->w_cursor = *pos; + del_char(FALSE); + ins_char('S'); + ins_char('S'); + curwin->w_cursor = sp; + inc(pos); + } + + if (enc_dbcs != 0 && c >= 0x100) /* No lower/uppercase letter */ + return FALSE; + nc = c; + if (vim_islower(c)) { + if (op_type == OP_ROT13) + nc = ROT13(c, 'a'); + else if (op_type != OP_LOWER) + nc = vim_toupper(c); + } else if (vim_isupper(c)) { + if (op_type == OP_ROT13) + nc = ROT13(c, 'A'); + else if (op_type != OP_UPPER) + nc = vim_tolower(c); + } + if (nc != c) { + if (enc_utf8 && (c >= 0x80 || nc >= 0x80)) { + pos_T sp = curwin->w_cursor; + + curwin->w_cursor = *pos; + /* don't use del_char(), it also removes composing chars */ + del_bytes(utf_ptr2len(ml_get_cursor()), FALSE, FALSE); + ins_char(nc); + curwin->w_cursor = sp; + } else + pchar(*pos, nc); + return TRUE; + } + return FALSE; +} + +/* + * op_insert - Insert and append operators for Visual mode. + */ +void op_insert(oparg_T *oap, long count1) +{ + long ins_len, pre_textlen = 0; + char_u *firstline, *ins_text; + struct block_def bd; + int i; + + /* edit() changes this - record it for OP_APPEND */ + bd.is_MAX = (curwin->w_curswant == MAXCOL); + + /* vis block is still marked. Get rid of it now. */ + curwin->w_cursor.lnum = oap->start.lnum; + update_screen(INVERTED); + + if (oap->block_mode) { + /* When 'virtualedit' is used, need to insert the extra spaces before + * doing block_prep(). When only "block" is used, virtual edit is + * already disabled, but still need it when calling + * coladvance_force(). */ + if (curwin->w_cursor.coladd > 0) { + int old_ve_flags = ve_flags; + + ve_flags = VE_ALL; + if (u_save_cursor() == FAIL) + return; + coladvance_force(oap->op_type == OP_APPEND + ? oap->end_vcol + 1 : getviscol()); + if (oap->op_type == OP_APPEND) + --curwin->w_cursor.col; + ve_flags = old_ve_flags; + } + /* Get the info about the block before entering the text */ + block_prep(oap, &bd, oap->start.lnum, TRUE); + firstline = ml_get(oap->start.lnum) + bd.textcol; + if (oap->op_type == OP_APPEND) + firstline += bd.textlen; + pre_textlen = (long)STRLEN(firstline); + } + + if (oap->op_type == OP_APPEND) { + if (oap->block_mode + && curwin->w_cursor.coladd == 0 + ) { + /* Move the cursor to the character right of the block. */ + curwin->w_set_curswant = TRUE; + while (*ml_get_cursor() != NUL + && (curwin->w_cursor.col < bd.textcol + bd.textlen)) + ++curwin->w_cursor.col; + if (bd.is_short && !bd.is_MAX) { + /* First line was too short, make it longer and adjust the + * values in "bd". */ + if (u_save_cursor() == FAIL) + return; + for (i = 0; i < bd.endspaces; ++i) + ins_char(' '); + bd.textlen += bd.endspaces; + } + } else { + curwin->w_cursor = oap->end; + check_cursor_col(); + + /* Works just like an 'i'nsert on the next character. */ + if (!lineempty(curwin->w_cursor.lnum) + && oap->start_vcol != oap->end_vcol) + inc_cursor(); + } + } + + edit(NUL, FALSE, (linenr_T)count1); + + /* If user has moved off this line, we don't know what to do, so do + * nothing. + * Also don't repeat the insert when Insert mode ended with CTRL-C. */ + if (curwin->w_cursor.lnum != oap->start.lnum || got_int) + return; + + if (oap->block_mode) { + struct block_def bd2; + + /* The user may have moved the cursor before inserting something, try + * to adjust the block for that. */ + if (oap->start.lnum == curbuf->b_op_start_orig.lnum && !bd.is_MAX) { + if (oap->op_type == OP_INSERT + && oap->start.col + oap->start.coladd + != curbuf->b_op_start_orig.col + curbuf->b_op_start_orig.coladd) { + oap->start.col = curbuf->b_op_start_orig.col; + pre_textlen -= getviscol2(oap->start.col, oap->start.coladd) + - oap->start_vcol; + oap->start_vcol = getviscol2(oap->start.col, oap->start.coladd); + } else if (oap->op_type == OP_APPEND + && oap->end.col + oap->end.coladd + >= curbuf->b_op_start_orig.col + + curbuf->b_op_start_orig.coladd) { + oap->start.col = curbuf->b_op_start_orig.col; + /* reset pre_textlen to the value of OP_INSERT */ + pre_textlen += bd.textlen; + pre_textlen -= getviscol2(oap->start.col, oap->start.coladd) + - oap->start_vcol; + oap->start_vcol = getviscol2(oap->start.col, oap->start.coladd); + oap->op_type = OP_INSERT; + } + } + + /* + * Spaces and tabs in the indent may have changed to other spaces and + * tabs. Get the starting column again and correct the length. + * Don't do this when "$" used, end-of-line will have changed. + */ + block_prep(oap, &bd2, oap->start.lnum, TRUE); + if (!bd.is_MAX || bd2.textlen < bd.textlen) { + if (oap->op_type == OP_APPEND) { + pre_textlen += bd2.textlen - bd.textlen; + if (bd2.endspaces) + --bd2.textlen; + } + bd.textcol = bd2.textcol; + bd.textlen = bd2.textlen; + } + + /* + * Subsequent calls to ml_get() flush the firstline data - take a + * copy of the required string. + */ + firstline = ml_get(oap->start.lnum) + bd.textcol; + if (oap->op_type == OP_APPEND) + firstline += bd.textlen; + if (pre_textlen >= 0 + && (ins_len = (long)STRLEN(firstline) - pre_textlen) > 0) { + ins_text = vim_strnsave(firstline, (int)ins_len); + if (ins_text != NULL) { + /* block handled here */ + if (u_save(oap->start.lnum, + (linenr_T)(oap->end.lnum + 1)) == OK) + block_insert(oap, ins_text, (oap->op_type == OP_INSERT), + &bd); + + curwin->w_cursor.col = oap->start.col; + check_cursor(); + free(ins_text); + } + } + } +} + +/* + * op_change - handle a change operation + * + * return TRUE if edit() returns because of a CTRL-O command + */ +int op_change(oparg_T *oap) +{ + colnr_T l; + int retval; + long offset; + linenr_T linenr; + long ins_len; + long pre_textlen = 0; + long pre_indent = 0; + char_u *firstline; + char_u *ins_text, *newp, *oldp; + struct block_def bd; + + l = oap->start.col; + if (oap->motion_type == MLINE) { + l = 0; + if (!p_paste && curbuf->b_p_si + && !curbuf->b_p_cin + ) + can_si = TRUE; /* It's like opening a new line, do si */ + } + + /* First delete the text in the region. In an empty buffer only need to + * save for undo */ + if (curbuf->b_ml.ml_flags & ML_EMPTY) { + if (u_save_cursor() == FAIL) + return FALSE; + } else if (op_delete(oap) == FAIL) + return FALSE; + + if ((l > curwin->w_cursor.col) && !lineempty(curwin->w_cursor.lnum) + && !virtual_op) + inc_cursor(); + + /* check for still on same line (<CR> in inserted text meaningless) */ + /* skip blank lines too */ + if (oap->block_mode) { + /* Add spaces before getting the current line length. */ + if (virtual_op && (curwin->w_cursor.coladd > 0 + || gchar_cursor() == NUL)) + coladvance_force(getviscol()); + firstline = ml_get(oap->start.lnum); + pre_textlen = (long)STRLEN(firstline); + pre_indent = (long)(skipwhite(firstline) - firstline); + bd.textcol = curwin->w_cursor.col; + } + + if (oap->motion_type == MLINE) + fix_indent(); + + retval = edit(NUL, FALSE, (linenr_T)1); + + /* + * In Visual block mode, handle copying the new text to all lines of the + * block. + * Don't repeat the insert when Insert mode ended with CTRL-C. + */ + if (oap->block_mode && oap->start.lnum != oap->end.lnum && !got_int) { + /* Auto-indenting may have changed the indent. If the cursor was past + * the indent, exclude that indent change from the inserted text. */ + firstline = ml_get(oap->start.lnum); + if (bd.textcol > (colnr_T)pre_indent) { + long new_indent = (long)(skipwhite(firstline) - firstline); + + pre_textlen += new_indent - pre_indent; + bd.textcol += new_indent - pre_indent; + } + + ins_len = (long)STRLEN(firstline) - pre_textlen; + if (ins_len > 0) { + /* Subsequent calls to ml_get() flush the firstline data - take a + * copy of the inserted text. */ + ins_text = (char_u *) xmalloc((size_t)(ins_len + 1)); + vim_strncpy(ins_text, firstline + bd.textcol, (size_t)ins_len); + for (linenr = oap->start.lnum + 1; linenr <= oap->end.lnum; + linenr++) { + block_prep(oap, &bd, linenr, TRUE); + if (!bd.is_short || virtual_op) { + pos_T vpos; + + /* If the block starts in virtual space, count the + * initial coladd offset as part of "startspaces" */ + if (bd.is_short) { + vpos.lnum = linenr; + (void)getvpos(&vpos, oap->start_vcol); + } else + vpos.coladd = 0; + oldp = ml_get(linenr); + newp = (char_u *) xmalloc((size_t)(STRLEN(oldp) + vpos.coladd + ins_len + 1)); + /* copy up to block start */ + memmove(newp, oldp, (size_t)bd.textcol); + offset = bd.textcol; + copy_spaces(newp + offset, (size_t)vpos.coladd); + offset += vpos.coladd; + memmove(newp + offset, ins_text, (size_t)ins_len); + offset += ins_len; + oldp += bd.textcol; + STRMOVE(newp + offset, oldp); + ml_replace(linenr, newp, FALSE); + } + } + check_cursor(); + changed_lines(oap->start.lnum + 1, 0, oap->end.lnum + 1, 0L); + free(ins_text); + } + } + + return retval; +} + +/* + * set all the yank registers to empty (called from main()) + */ +void init_yank(void) +{ + int i; + + for (i = 0; i < NUM_REGISTERS; ++i) + y_regs[i].y_array = NULL; +} + +#if defined(EXITFREE) || defined(PROTO) +void clear_registers(void) +{ + int i; + + for (i = 0; i < NUM_REGISTERS; ++i) { + y_current = &y_regs[i]; + if (y_current->y_array != NULL) + free_yank_all(); + } +} + +#endif + +/* + * Free "n" lines from the current yank register. + * Called for normal freeing and in case of error. + */ +static void free_yank(long n) +{ + if (y_current->y_array != NULL) { + long i; + + for (i = n; --i >= 0; ) { + free(y_current->y_array[i]); + } + free(y_current->y_array); + y_current->y_array = NULL; + } +} + +static void free_yank_all(void) +{ + free_yank(y_current->y_size); +} + +/* + * Yank the text between "oap->start" and "oap->end" into a yank register. + * If we are to append (uppercase register), we first yank into a new yank + * register and then concatenate the old and the new one (so we keep the old + * one in case of out-of-memory). + * + * Return FAIL for failure, OK otherwise. + */ +int op_yank(oparg_T *oap, int deleting, int mess) +{ + long y_idx; /* index in y_array[] */ + struct yankreg *curr; /* copy of y_current */ + struct yankreg newreg; /* new yank register when appending */ + char_u **new_ptr; + linenr_T lnum; /* current line number */ + long j; + int yanktype = oap->motion_type; + long yanklines = oap->line_count; + linenr_T yankendlnum = oap->end.lnum; + char_u *p; + char_u *pnew; + struct block_def bd; + + /* check for read-only register */ + if (oap->regname != 0 && !valid_yank_reg(oap->regname, TRUE)) { + beep_flush(); + return FAIL; + } + if (oap->regname == '_') /* black hole: nothing to do */ + return OK; + + + if (!deleting) /* op_delete() already set y_current */ + get_yank_register(oap->regname, TRUE); + + curr = y_current; + /* append to existing contents */ + if (y_append && y_current->y_array != NULL) + y_current = &newreg; + else + free_yank_all(); /* free previously yanked lines */ + + /* + * If the cursor was in column 1 before and after the movement, and the + * operator is not inclusive, the yank is always linewise. + */ + if ( oap->motion_type == MCHAR + && oap->start.col == 0 + && !oap->inclusive + && (!oap->is_VIsual || *p_sel == 'o') + && !oap->block_mode + && oap->end.col == 0 + && yanklines > 1) { + yanktype = MLINE; + --yankendlnum; + --yanklines; + } + + y_current->y_size = yanklines; + y_current->y_type = yanktype; /* set the yank register type */ + y_current->y_width = 0; + y_current->y_array = xcalloc(yanklines, sizeof(char_u *)); + + y_idx = 0; + lnum = oap->start.lnum; + + if (oap->block_mode) { + /* Visual block mode */ + y_current->y_type = MBLOCK; /* set the yank register type */ + y_current->y_width = oap->end_vcol - oap->start_vcol; + + if (curwin->w_curswant == MAXCOL && y_current->y_width > 0) + y_current->y_width--; + } + + for (; lnum <= yankendlnum; lnum++, y_idx++) { + switch (y_current->y_type) { + case MBLOCK: + block_prep(oap, &bd, lnum, FALSE); + yank_copy_line(&bd, y_idx); + break; + + case MLINE: + if ((y_current->y_array[y_idx] = + vim_strsave(ml_get(lnum))) == NULL) + goto fail; + break; + + case MCHAR: + { + colnr_T startcol = 0, endcol = MAXCOL; + int is_oneChar = FALSE; + colnr_T cs, ce; + p = ml_get(lnum); + bd.startspaces = 0; + bd.endspaces = 0; + + if (lnum == oap->start.lnum) { + startcol = oap->start.col; + if (virtual_op) { + getvcol(curwin, &oap->start, &cs, NULL, &ce); + if (ce != cs && oap->start.coladd > 0) { + /* Part of a tab selected -- but don't + * double-count it. */ + bd.startspaces = (ce - cs + 1) + - oap->start.coladd; + startcol++; + } + } + } + + if (lnum == oap->end.lnum) { + endcol = oap->end.col; + if (virtual_op) { + getvcol(curwin, &oap->end, &cs, NULL, &ce); + if (p[endcol] == NUL || (cs + oap->end.coladd < ce + /* Don't add space for double-wide + * char; endcol will be on last byte + * of multi-byte char. */ + && (*mb_head_off)(p, p + endcol) == 0 + )) { + if (oap->start.lnum == oap->end.lnum + && oap->start.col == oap->end.col) { + /* Special case: inside a single char */ + is_oneChar = TRUE; + bd.startspaces = oap->end.coladd + - oap->start.coladd + oap->inclusive; + endcol = startcol; + } else { + bd.endspaces = oap->end.coladd + + oap->inclusive; + endcol -= oap->inclusive; + } + } + } + } + if (endcol == MAXCOL) + endcol = (colnr_T)STRLEN(p); + if (startcol > endcol + || is_oneChar + ) + bd.textlen = 0; + else { + bd.textlen = endcol - startcol + oap->inclusive; + } + bd.textstart = p + startcol; + yank_copy_line(&bd, y_idx); + break; + } + /* NOTREACHED */ + } + } + + if (curr != y_current) { /* append the new block to the old block */ + new_ptr = xmalloc(sizeof(char_u *) * (curr->y_size + y_current->y_size)); + for (j = 0; j < curr->y_size; ++j) + new_ptr[j] = curr->y_array[j]; + free(curr->y_array); + curr->y_array = new_ptr; + + if (yanktype == MLINE) /* MLINE overrides MCHAR and MBLOCK */ + curr->y_type = MLINE; + + /* Concatenate the last line of the old block with the first line of + * the new block, unless being Vi compatible. */ + if (curr->y_type == MCHAR && vim_strchr(p_cpo, CPO_REGAPPEND) == NULL) { + pnew = xmalloc(STRLEN(curr->y_array[curr->y_size - 1]) + + STRLEN(y_current->y_array[0]) + 1); + STRCPY(pnew, curr->y_array[--j]); + STRCAT(pnew, y_current->y_array[0]); + free(curr->y_array[j]); + free(y_current->y_array[0]); + curr->y_array[j++] = pnew; + y_idx = 1; + } else + y_idx = 0; + while (y_idx < y_current->y_size) + curr->y_array[j++] = y_current->y_array[y_idx++]; + curr->y_size = j; + free(y_current->y_array); + y_current = curr; + } + if (mess) { /* Display message about yank? */ + if (yanktype == MCHAR + && !oap->block_mode + && yanklines == 1) + yanklines = 0; + /* Some versions of Vi use ">=" here, some don't... */ + if (yanklines > p_report) { + /* redisplay now, so message is not deleted */ + update_topline_redraw(); + if (yanklines == 1) { + if (oap->block_mode) + MSG(_("block of 1 line yanked")); + else + MSG(_("1 line yanked")); + } else if (oap->block_mode) + smsg((char_u *)_("block of %" PRId64 " lines yanked"), + (int64_t)yanklines); + else + smsg((char_u *)_("%" PRId64 " lines yanked"), (int64_t)yanklines); + } + } + + /* + * Set "'[" and "']" marks. + */ + curbuf->b_op_start = oap->start; + curbuf->b_op_end = oap->end; + if (yanktype == MLINE + && !oap->block_mode + ) { + curbuf->b_op_start.col = 0; + curbuf->b_op_end.col = MAXCOL; + } + + + return OK; + +fail: /* free the allocated lines */ + free_yank(y_idx + 1); + y_current = curr; + return FAIL; +} + +static void yank_copy_line(struct block_def *bd, long y_idx) +{ + char_u *pnew = xmallocz(bd->startspaces + bd->endspaces + bd->textlen); + + y_current->y_array[y_idx] = pnew; + copy_spaces(pnew, (size_t)bd->startspaces); + pnew += bd->startspaces; + memmove(pnew, bd->textstart, (size_t)bd->textlen); + pnew += bd->textlen; + copy_spaces(pnew, (size_t)bd->endspaces); + pnew += bd->endspaces; + *pnew = NUL; +} + + +/* + * Put contents of register "regname" into the text. + * Caller must check "regname" to be valid! + * "flags": PUT_FIXINDENT make indent look nice + * PUT_CURSEND leave cursor after end of new text + * PUT_LINE force linewise put (":put") + */ +void +do_put ( + int regname, + int dir, /* BACKWARD for 'P', FORWARD for 'p' */ + long count, + int flags +) +{ + char_u *ptr; + char_u *newp, *oldp; + int yanklen; + int totlen = 0; /* init for gcc */ + linenr_T lnum; + colnr_T col; + long i; /* index in y_array[] */ + int y_type; + long y_size; + int oldlen; + long y_width = 0; + colnr_T vcol; + int delcount; + int incr = 0; + long j; + struct block_def bd; + char_u **y_array = NULL; + long nr_lines = 0; + pos_T new_cursor; + int indent; + int orig_indent = 0; /* init for gcc */ + int indent_diff = 0; /* init for gcc */ + int first_indent = TRUE; + int lendiff = 0; + pos_T old_pos; + char_u *insert_string = NULL; + int allocated = FALSE; + long cnt; + + + if (flags & PUT_FIXINDENT) + orig_indent = get_indent(); + + curbuf->b_op_start = curwin->w_cursor; /* default for '[ mark */ + curbuf->b_op_end = curwin->w_cursor; /* default for '] mark */ + + /* + * Using inserted text works differently, because the register includes + * special characters (newlines, etc.). + */ + if (regname == '.') { + (void)stuff_inserted((dir == FORWARD ? (count == -1 ? 'o' : 'a') : + (count == -1 ? 'O' : 'i')), count, FALSE); + /* Putting the text is done later, so can't really move the cursor to + * the next character. Use "l" to simulate it. */ + if ((flags & PUT_CURSEND) && gchar_cursor() != NUL) + stuffcharReadbuff('l'); + return; + } + + /* + * For special registers '%' (file name), '#' (alternate file name) and + * ':' (last command line), etc. we have to create a fake yank register. + */ + if (get_spec_reg(regname, &insert_string, &allocated, TRUE)) { + if (insert_string == NULL) + return; + } + + /* Autocommands may be executed when saving lines for undo, which may make + * y_array invalid. Start undo now to avoid that. */ + u_save(curwin->w_cursor.lnum, curwin->w_cursor.lnum + 1); + + if (insert_string != NULL) { + y_type = MCHAR; + if (regname == '=') { + /* For the = register we need to split the string at NL + * characters. + * Loop twice: count the number of lines and save them. */ + for (;; ) { + y_size = 0; + ptr = insert_string; + while (ptr != NULL) { + if (y_array != NULL) + y_array[y_size] = ptr; + ++y_size; + ptr = vim_strchr(ptr, '\n'); + if (ptr != NULL) { + if (y_array != NULL) + *ptr = NUL; + ++ptr; + /* A trailing '\n' makes the register linewise. */ + if (*ptr == NUL) { + y_type = MLINE; + break; + } + } + } + if (y_array != NULL) + break; + y_array = (char_u **)alloc((unsigned) + (y_size * sizeof(char_u *))); + } + } else { + y_size = 1; /* use fake one-line yank register */ + y_array = &insert_string; + } + } else { + get_yank_register(regname, FALSE); + + y_type = y_current->y_type; + y_width = y_current->y_width; + y_size = y_current->y_size; + y_array = y_current->y_array; + } + + if (y_type == MLINE) { + if (flags & PUT_LINE_SPLIT) { + /* "p" or "P" in Visual mode: split the lines to put the text in + * between. */ + if (u_save_cursor() == FAIL) + goto end; + ptr = vim_strsave(ml_get_cursor()); + if (ptr == NULL) + goto end; + ml_append(curwin->w_cursor.lnum, ptr, (colnr_T)0, FALSE); + free(ptr); + + ptr = vim_strnsave(ml_get_curline(), curwin->w_cursor.col); + if (ptr == NULL) + goto end; + ml_replace(curwin->w_cursor.lnum, ptr, FALSE); + ++nr_lines; + dir = FORWARD; + } + if (flags & PUT_LINE_FORWARD) { + /* Must be "p" for a Visual block, put lines below the block. */ + curwin->w_cursor = curbuf->b_visual.vi_end; + dir = FORWARD; + } + curbuf->b_op_start = curwin->w_cursor; /* default for '[ mark */ + curbuf->b_op_end = curwin->w_cursor; /* default for '] mark */ + } + + if (flags & PUT_LINE) /* :put command or "p" in Visual line mode. */ + y_type = MLINE; + + if (y_size == 0 || y_array == NULL) { + EMSG2(_("E353: Nothing in register %s"), + regname == 0 ? (char_u *)"\"" : transchar(regname)); + goto end; + } + + if (y_type == MBLOCK) { + lnum = curwin->w_cursor.lnum + y_size + 1; + if (lnum > curbuf->b_ml.ml_line_count) + lnum = curbuf->b_ml.ml_line_count + 1; + if (u_save(curwin->w_cursor.lnum - 1, lnum) == FAIL) + goto end; + } else if (y_type == MLINE) { + lnum = curwin->w_cursor.lnum; + /* Correct line number for closed fold. Don't move the cursor yet, + * u_save() uses it. */ + if (dir == BACKWARD) + (void)hasFolding(lnum, &lnum, NULL); + else + (void)hasFolding(lnum, NULL, &lnum); + if (dir == FORWARD) + ++lnum; + /* In an empty buffer the empty line is going to be replaced, include + * it in the saved lines. */ + if ((bufempty() ? u_save(0, 2) : u_save(lnum - 1, lnum)) == FAIL) + goto end; + if (dir == FORWARD) + curwin->w_cursor.lnum = lnum - 1; + else + curwin->w_cursor.lnum = lnum; + curbuf->b_op_start = curwin->w_cursor; /* for mark_adjust() */ + } else if (u_save_cursor() == FAIL) + goto end; + + yanklen = (int)STRLEN(y_array[0]); + + if (ve_flags == VE_ALL && y_type == MCHAR) { + if (gchar_cursor() == TAB) { + /* Don't need to insert spaces when "p" on the last position of a + * tab or "P" on the first position. */ + if (dir == FORWARD + ? (int)curwin->w_cursor.coladd < curbuf->b_p_ts - 1 + : curwin->w_cursor.coladd > 0) + coladvance_force(getviscol()); + else + curwin->w_cursor.coladd = 0; + } else if (curwin->w_cursor.coladd > 0 || gchar_cursor() == NUL) + coladvance_force(getviscol() + (dir == FORWARD)); + } + + lnum = curwin->w_cursor.lnum; + col = curwin->w_cursor.col; + + /* + * Block mode + */ + if (y_type == MBLOCK) { + char c = gchar_cursor(); + colnr_T endcol2 = 0; + + if (dir == FORWARD && c != NUL) { + if (ve_flags == VE_ALL) + getvcol(curwin, &curwin->w_cursor, &col, NULL, &endcol2); + else + getvcol(curwin, &curwin->w_cursor, NULL, NULL, &col); + + if (has_mbyte) + /* move to start of next multi-byte character */ + curwin->w_cursor.col += (*mb_ptr2len)(ml_get_cursor()); + else if (c != TAB || ve_flags != VE_ALL) + ++curwin->w_cursor.col; + ++col; + } else + getvcol(curwin, &curwin->w_cursor, &col, NULL, &endcol2); + + col += curwin->w_cursor.coladd; + if (ve_flags == VE_ALL + && (curwin->w_cursor.coladd > 0 + || endcol2 == curwin->w_cursor.col)) { + if (dir == FORWARD && c == NUL) + ++col; + if (dir != FORWARD && c != NUL) + ++curwin->w_cursor.col; + if (c == TAB) { + if (dir == BACKWARD && curwin->w_cursor.col) + curwin->w_cursor.col--; + if (dir == FORWARD && col - 1 == endcol2) + curwin->w_cursor.col++; + } + } + curwin->w_cursor.coladd = 0; + bd.textcol = 0; + for (i = 0; i < y_size; ++i) { + int spaces; + char shortline; + + bd.startspaces = 0; + bd.endspaces = 0; + vcol = 0; + delcount = 0; + + /* add a new line */ + if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) { + if (ml_append(curbuf->b_ml.ml_line_count, (char_u *)"", + (colnr_T)1, FALSE) == FAIL) + break; + ++nr_lines; + } + /* get the old line and advance to the position to insert at */ + oldp = ml_get_curline(); + oldlen = (int)STRLEN(oldp); + for (ptr = oldp; vcol < col && *ptr; ) { + /* Count a tab for what it's worth (if list mode not on) */ + incr = lbr_chartabsize_adv(&ptr, (colnr_T)vcol); + vcol += incr; + } + bd.textcol = (colnr_T)(ptr - oldp); + + shortline = (vcol < col) || (vcol == col && !*ptr); + + if (vcol < col) /* line too short, padd with spaces */ + bd.startspaces = col - vcol; + else if (vcol > col) { + bd.endspaces = vcol - col; + bd.startspaces = incr - bd.endspaces; + --bd.textcol; + delcount = 1; + if (has_mbyte) + bd.textcol -= (*mb_head_off)(oldp, oldp + bd.textcol); + if (oldp[bd.textcol] != TAB) { + /* Only a Tab can be split into spaces. Other + * characters will have to be moved to after the + * block, causing misalignment. */ + delcount = 0; + bd.endspaces = 0; + } + } + + yanklen = (int)STRLEN(y_array[i]); + + /* calculate number of spaces required to fill right side of block*/ + spaces = y_width + 1; + for (j = 0; j < yanklen; j++) + spaces -= lbr_chartabsize(&y_array[i][j], 0); + if (spaces < 0) + spaces = 0; + + /* insert the new text */ + totlen = count * (yanklen + spaces) + bd.startspaces + bd.endspaces; + newp = (char_u *) xmalloc((size_t)(totlen + oldlen + 1)); + /* copy part up to cursor to new line */ + ptr = newp; + memmove(ptr, oldp, (size_t)bd.textcol); + ptr += bd.textcol; + /* may insert some spaces before the new text */ + copy_spaces(ptr, (size_t)bd.startspaces); + ptr += bd.startspaces; + /* insert the new text */ + for (j = 0; j < count; ++j) { + memmove(ptr, y_array[i], (size_t)yanklen); + ptr += yanklen; + + /* insert block's trailing spaces only if there's text behind */ + if ((j < count - 1 || !shortline) && spaces) { + copy_spaces(ptr, (size_t)spaces); + ptr += spaces; + } + } + /* may insert some spaces after the new text */ + copy_spaces(ptr, (size_t)bd.endspaces); + ptr += bd.endspaces; + /* move the text after the cursor to the end of the line. */ + memmove(ptr, oldp + bd.textcol + delcount, + (size_t)(oldlen - bd.textcol - delcount + 1)); + ml_replace(curwin->w_cursor.lnum, newp, FALSE); + + ++curwin->w_cursor.lnum; + if (i == 0) + curwin->w_cursor.col += bd.startspaces; + } + + changed_lines(lnum, 0, curwin->w_cursor.lnum, nr_lines); + + /* Set '[ mark. */ + curbuf->b_op_start = curwin->w_cursor; + curbuf->b_op_start.lnum = lnum; + + /* adjust '] mark */ + curbuf->b_op_end.lnum = curwin->w_cursor.lnum - 1; + curbuf->b_op_end.col = bd.textcol + totlen - 1; + curbuf->b_op_end.coladd = 0; + if (flags & PUT_CURSEND) { + colnr_T len; + + curwin->w_cursor = curbuf->b_op_end; + curwin->w_cursor.col++; + + /* in Insert mode we might be after the NUL, correct for that */ + len = (colnr_T)STRLEN(ml_get_curline()); + if (curwin->w_cursor.col > len) + curwin->w_cursor.col = len; + } else + curwin->w_cursor.lnum = lnum; + } else { + /* + * Character or Line mode + */ + if (y_type == MCHAR) { + /* if type is MCHAR, FORWARD is the same as BACKWARD on the next + * char */ + if (dir == FORWARD && gchar_cursor() != NUL) { + if (has_mbyte) { + int bytelen = (*mb_ptr2len)(ml_get_cursor()); + + /* put it on the next of the multi-byte character. */ + col += bytelen; + if (yanklen) { + curwin->w_cursor.col += bytelen; + curbuf->b_op_end.col += bytelen; + } + } else { + ++col; + if (yanklen) { + ++curwin->w_cursor.col; + ++curbuf->b_op_end.col; + } + } + } + curbuf->b_op_start = curwin->w_cursor; + } + /* + * Line mode: BACKWARD is the same as FORWARD on the previous line + */ + else if (dir == BACKWARD) + --lnum; + new_cursor = curwin->w_cursor; + + /* + * simple case: insert into current line + */ + if (y_type == MCHAR && y_size == 1) { + do { + totlen = count * yanklen; + if (totlen > 0) { + oldp = ml_get(lnum); + newp = (char_u *) xmalloc((size_t)(STRLEN(oldp) + totlen + 1)); + memmove(newp, oldp, (size_t)col); + ptr = newp + col; + for (i = 0; i < count; ++i) { + memmove(ptr, y_array[0], (size_t)yanklen); + ptr += yanklen; + } + STRMOVE(ptr, oldp + col); + ml_replace(lnum, newp, FALSE); + /* Place cursor on last putted char. */ + if (lnum == curwin->w_cursor.lnum) { + /* make sure curwin->w_virtcol is updated */ + changed_cline_bef_curs(); + curwin->w_cursor.col += (colnr_T)(totlen - 1); + } + } + if (VIsual_active) + lnum++; + } while ( + VIsual_active && lnum <= curbuf->b_visual.vi_end.lnum + ); + + curbuf->b_op_end = curwin->w_cursor; + /* For "CTRL-O p" in Insert mode, put cursor after last char */ + if (totlen && (restart_edit != 0 || (flags & PUT_CURSEND))) + ++curwin->w_cursor.col; + changed_bytes(lnum, col); + } else { + /* + * Insert at least one line. When y_type is MCHAR, break the first + * line in two. + */ + for (cnt = 1; cnt <= count; ++cnt) { + i = 0; + if (y_type == MCHAR) { + /* + * Split the current line in two at the insert position. + * First insert y_array[size - 1] in front of second line. + * Then append y_array[0] to first line. + */ + lnum = new_cursor.lnum; + ptr = ml_get(lnum) + col; + totlen = (int)STRLEN(y_array[y_size - 1]); + newp = (char_u *) xmalloc((size_t)(STRLEN(ptr) + totlen + 1)); + STRCPY(newp, y_array[y_size - 1]); + STRCAT(newp, ptr); + /* insert second line */ + ml_append(lnum, newp, (colnr_T)0, FALSE); + free(newp); + + oldp = ml_get(lnum); + newp = (char_u *) xmalloc((size_t)(col + yanklen + 1)); + /* copy first part of line */ + memmove(newp, oldp, (size_t)col); + /* append to first line */ + memmove(newp + col, y_array[0], (size_t)(yanklen + 1)); + ml_replace(lnum, newp, FALSE); + + curwin->w_cursor.lnum = lnum; + i = 1; + } + + for (; i < y_size; ++i) { + if ((y_type != MCHAR || i < y_size - 1) + && ml_append(lnum, y_array[i], (colnr_T)0, FALSE) + == FAIL) + goto error; + lnum++; + ++nr_lines; + if (flags & PUT_FIXINDENT) { + old_pos = curwin->w_cursor; + curwin->w_cursor.lnum = lnum; + ptr = ml_get(lnum); + if (cnt == count && i == y_size - 1) + lendiff = (int)STRLEN(ptr); + if (*ptr == '#' && preprocs_left()) + indent = 0; /* Leave # lines at start */ + else if (*ptr == NUL) + indent = 0; /* Ignore empty lines */ + else if (first_indent) { + indent_diff = orig_indent - get_indent(); + indent = orig_indent; + first_indent = FALSE; + } else if ((indent = get_indent() + indent_diff) < 0) + indent = 0; + (void)set_indent(indent, 0); + curwin->w_cursor = old_pos; + /* remember how many chars were removed */ + if (cnt == count && i == y_size - 1) + lendiff -= (int)STRLEN(ml_get(lnum)); + } + } + } + +error: + /* Adjust marks. */ + if (y_type == MLINE) { + curbuf->b_op_start.col = 0; + if (dir == FORWARD) + curbuf->b_op_start.lnum++; + } + mark_adjust(curbuf->b_op_start.lnum + (y_type == MCHAR), + (linenr_T)MAXLNUM, nr_lines, 0L); + + /* note changed text for displaying and folding */ + if (y_type == MCHAR) + changed_lines(curwin->w_cursor.lnum, col, + curwin->w_cursor.lnum + 1, nr_lines); + else + changed_lines(curbuf->b_op_start.lnum, 0, + curbuf->b_op_start.lnum, nr_lines); + + /* put '] mark at last inserted character */ + curbuf->b_op_end.lnum = lnum; + /* correct length for change in indent */ + col = (colnr_T)STRLEN(y_array[y_size - 1]) - lendiff; + if (col > 1) + curbuf->b_op_end.col = col - 1; + else + curbuf->b_op_end.col = 0; + + if (flags & PUT_CURSLINE) { + /* ":put": put cursor on last inserted line */ + curwin->w_cursor.lnum = lnum; + beginline(BL_WHITE | BL_FIX); + } else if (flags & PUT_CURSEND) { + /* put cursor after inserted text */ + if (y_type == MLINE) { + if (lnum >= curbuf->b_ml.ml_line_count) + curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; + else + curwin->w_cursor.lnum = lnum + 1; + curwin->w_cursor.col = 0; + } else { + curwin->w_cursor.lnum = lnum; + curwin->w_cursor.col = col; + } + } else if (y_type == MLINE) { + /* put cursor on first non-blank in first inserted line */ + curwin->w_cursor.col = 0; + if (dir == FORWARD) + ++curwin->w_cursor.lnum; + beginline(BL_WHITE | BL_FIX); + } else /* put cursor on first inserted character */ + curwin->w_cursor = new_cursor; + } + } + + msgmore(nr_lines); + curwin->w_set_curswant = TRUE; + +end: + if (allocated) + free(insert_string); + if (regname == '=') + free(y_array); + + VIsual_active = FALSE; + + /* If the cursor is past the end of the line put it at the end. */ + adjust_cursor_eol(); +} + +/* + * When the cursor is on the NUL past the end of the line and it should not be + * there move it left. + */ +void adjust_cursor_eol(void) +{ + if (curwin->w_cursor.col > 0 + && gchar_cursor() == NUL + && (ve_flags & VE_ONEMORE) == 0 + && !(restart_edit || (State & INSERT))) { + /* Put the cursor on the last character in the line. */ + dec_cursor(); + + if (ve_flags == VE_ALL) { + colnr_T scol, ecol; + + /* Coladd is set to the width of the last character. */ + getvcol(curwin, &curwin->w_cursor, &scol, NULL, &ecol); + curwin->w_cursor.coladd = ecol - scol + 1; + } + } +} + +/* + * Return TRUE if lines starting with '#' should be left aligned. + */ +int preprocs_left(void) +{ + return + (curbuf->b_p_si && !curbuf->b_p_cin) || + (curbuf->b_p_cin && in_cinkeys('#', ' ', TRUE) + && curbuf->b_ind_hash_comment == 0) + ; +} + +/* Return the character name of the register with the given number */ +int get_register_name(int num) +{ + if (num == -1) + return '"'; + else if (num < 10) + return num + '0'; + else if (num == DELETION_REGISTER) + return '-'; + else { + return num + 'a' - 10; + } +} + +/* + * ":dis" and ":registers": Display the contents of the yank registers. + */ +void ex_display(exarg_T *eap) +{ + int i, n; + long j; + char_u *p; + struct yankreg *yb; + int name; + int attr; + char_u *arg = eap->arg; + int clen; + + if (arg != NULL && *arg == NUL) + arg = NULL; + attr = hl_attr(HLF_8); + + /* Highlight title */ + MSG_PUTS_TITLE(_("\n--- Registers ---")); + for (i = -1; i < NUM_REGISTERS && !got_int; ++i) { + name = get_register_name(i); + if (arg != NULL && vim_strchr(arg, name) == NULL +#ifdef ONE_CLIPBOARD + /* Star register and plus register contain the same thing. */ + && (name != '*' || vim_strchr(arg, '+') == NULL) +#endif + ) + continue; /* did not ask for this register */ + + + if (i == -1) { + if (y_previous != NULL) + yb = y_previous; + else + yb = &(y_regs[0]); + } else + yb = &(y_regs[i]); + + if (name == vim_tolower(redir_reg) + || (redir_reg == '"' && yb == y_previous)) + continue; /* do not list register being written to, the + * pointer can be freed */ + + if (yb->y_array != NULL) { + msg_putchar('\n'); + msg_putchar('"'); + msg_putchar(name); + MSG_PUTS(" "); + + n = (int)Columns - 6; + for (j = 0; j < yb->y_size && n > 1; ++j) { + if (j) { + MSG_PUTS_ATTR("^J", attr); + n -= 2; + } + for (p = yb->y_array[j]; *p && (n -= ptr2cells(p)) >= 0; ++p) { + clen = (*mb_ptr2len)(p); + msg_outtrans_len(p, clen); + p += clen - 1; + } + } + if (n > 1 && yb->y_type == MLINE) + MSG_PUTS_ATTR("^J", attr); + out_flush(); /* show one line at a time */ + } + ui_breakcheck(); + } + + /* + * display last inserted text + */ + if ((p = get_last_insert()) != NULL + && (arg == NULL || vim_strchr(arg, '.') != NULL) && !got_int) { + MSG_PUTS("\n\". "); + dis_msg(p, TRUE); + } + + /* + * display last command line + */ + if (last_cmdline != NULL && (arg == NULL || vim_strchr(arg, ':') != NULL) + && !got_int) { + MSG_PUTS("\n\": "); + dis_msg(last_cmdline, FALSE); + } + + /* + * display current file name + */ + if (curbuf->b_fname != NULL + && (arg == NULL || vim_strchr(arg, '%') != NULL) && !got_int) { + MSG_PUTS("\n\"% "); + dis_msg(curbuf->b_fname, FALSE); + } + + /* + * display alternate file name + */ + if ((arg == NULL || vim_strchr(arg, '%') != NULL) && !got_int) { + char_u *fname; + linenr_T dummy; + + if (buflist_name_nr(0, &fname, &dummy) != FAIL) { + MSG_PUTS("\n\"# "); + dis_msg(fname, FALSE); + } + } + + /* + * display last search pattern + */ + if (last_search_pat() != NULL + && (arg == NULL || vim_strchr(arg, '/') != NULL) && !got_int) { + MSG_PUTS("\n\"/ "); + dis_msg(last_search_pat(), FALSE); + } + + /* + * display last used expression + */ + if (expr_line != NULL && (arg == NULL || vim_strchr(arg, '=') != NULL) + && !got_int) { + MSG_PUTS("\n\"= "); + dis_msg(expr_line, FALSE); + } +} + +/* + * display a string for do_dis() + * truncate at end of screen line + */ +static void +dis_msg ( + char_u *p, + int skip_esc /* if TRUE, ignore trailing ESC */ +) +{ + int n; + int l; + + n = (int)Columns - 6; + while (*p != NUL + && !(*p == ESC && skip_esc && *(p + 1) == NUL) + && (n -= ptr2cells(p)) >= 0) { + if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) { + msg_outtrans_len(p, l); + p += l; + } else + msg_outtrans_len(p++, 1); + } + ui_breakcheck(); +} + +/* + * If "process" is TRUE and the line begins with a comment leader (possibly + * after some white space), return a pointer to the text after it. Put a boolean + * value indicating whether the line ends with an unclosed comment in + * "is_comment". + * line - line to be processed, + * process - if FALSE, will only check whether the line ends with an unclosed + * comment, + * include_space - whether to also skip space following the comment leader, + * is_comment - will indicate whether the current line ends with an unclosed + * comment. + */ +static char_u *skip_comment(char_u *line, int process, int include_space, int *is_comment) +{ + char_u *comment_flags = NULL; + int lead_len; + int leader_offset = get_last_leader_offset(line, &comment_flags); + + *is_comment = FALSE; + if (leader_offset != -1) { + /* Let's check whether the line ends with an unclosed comment. + * If the last comment leader has COM_END in flags, there's no comment. + */ + while (*comment_flags) { + if (*comment_flags == COM_END + || *comment_flags == ':') + break; + ++comment_flags; + } + if (*comment_flags != COM_END) + *is_comment = TRUE; + } + + if (process == FALSE) + return line; + + lead_len = get_leader_len(line, &comment_flags, FALSE, include_space); + + if (lead_len == 0) + return line; + + /* Find: + * - COM_END, + * - colon, + * whichever comes first. + */ + while (*comment_flags) { + if (*comment_flags == COM_END + || *comment_flags == ':') { + break; + } + ++comment_flags; + } + + /* If we found a colon, it means that we are not processing a line + * starting with a closing part of a three-part comment. That's good, + * because we don't want to remove those as this would be annoying. + */ + if (*comment_flags == ':' || *comment_flags == NUL) + line += lead_len; + + return line; +} + +/* + * Join 'count' lines (minimal 2) at cursor position. + * When "save_undo" is TRUE save lines for undo first. + * Set "use_formatoptions" to FALSE when e.g. processing + * backspace and comment leaders should not be removed. + * + * return FAIL for failure, OK otherwise + */ +int do_join(long count, int insert_space, int save_undo, int use_formatoptions) +{ + char_u *curr = NULL; + char_u *curr_start = NULL; + char_u *cend; + char_u *newp; + char_u *spaces; /* number of spaces inserted before a line */ + int endcurr1 = NUL; + int endcurr2 = NUL; + int currsize = 0; /* size of the current line */ + int sumsize = 0; /* size of the long new line */ + linenr_T t; + colnr_T col = 0; + int ret = OK; + int *comments = NULL; + int remove_comments = (use_formatoptions == TRUE) + && has_format_option(FO_REMOVE_COMS); + int prev_was_comment; + + + if (save_undo && u_save((linenr_T)(curwin->w_cursor.lnum - 1), + (linenr_T)(curwin->w_cursor.lnum + count)) == FAIL) + return FAIL; + + /* Allocate an array to store the number of spaces inserted before each + * line. We will use it to pre-compute the length of the new line and the + * proper placement of each original line in the new one. */ + spaces = xcalloc(count, 1); + if (remove_comments) { + comments = xcalloc(count, sizeof(*comments)); + } + + /* + * Don't move anything, just compute the final line length + * and setup the array of space strings lengths + */ + for (t = 0; t < count; ++t) { + curr = curr_start = ml_get((linenr_T)(curwin->w_cursor.lnum + t)); + if (t == 0) { + // Set the '[ mark. + curwin->w_buffer->b_op_start.lnum = curwin->w_cursor.lnum; + curwin->w_buffer->b_op_start.col = (colnr_T)STRLEN(curr); + } + if (remove_comments) { + /* We don't want to remove the comment leader if the + * previous line is not a comment. */ + if (t > 0 && prev_was_comment) { + + char_u *new_curr = skip_comment(curr, TRUE, insert_space, + &prev_was_comment); + comments[t] = (int)(new_curr - curr); + curr = new_curr; + } else + curr = skip_comment(curr, FALSE, insert_space, + &prev_was_comment); + } + + if (insert_space && t > 0) { + curr = skipwhite(curr); + if (*curr != ')' && currsize != 0 && endcurr1 != TAB + && (!has_format_option(FO_MBYTE_JOIN) + || (mb_ptr2char(curr) < 0x100 && endcurr1 < 0x100)) + && (!has_format_option(FO_MBYTE_JOIN2) + || mb_ptr2char(curr) < 0x100 || endcurr1 < 0x100) + ) { + /* don't add a space if the line is ending in a space */ + if (endcurr1 == ' ') + endcurr1 = endcurr2; + else + ++spaces[t]; + /* extra space when 'joinspaces' set and line ends in '.' */ + if ( p_js + && (endcurr1 == '.' + || (vim_strchr(p_cpo, CPO_JOINSP) == NULL + && (endcurr1 == '?' || endcurr1 == '!')))) + ++spaces[t]; + } + } + currsize = (int)STRLEN(curr); + sumsize += currsize + spaces[t]; + endcurr1 = endcurr2 = NUL; + if (insert_space && currsize > 0) { + if (has_mbyte) { + cend = curr + currsize; + mb_ptr_back(curr, cend); + endcurr1 = (*mb_ptr2char)(cend); + if (cend > curr) { + mb_ptr_back(curr, cend); + endcurr2 = (*mb_ptr2char)(cend); + } + } else { + endcurr1 = *(curr + currsize - 1); + if (currsize > 1) + endcurr2 = *(curr + currsize - 2); + } + } + line_breakcheck(); + if (got_int) { + ret = FAIL; + goto theend; + } + } + + /* store the column position before last line */ + col = sumsize - currsize - spaces[count - 1]; + + /* allocate the space for the new line */ + newp = (char_u *) xmalloc((size_t)(sumsize + 1)); + cend = newp + sumsize; + *cend = 0; + + /* + * Move affected lines to the new long one. + * + * Move marks from each deleted line to the joined line, adjusting the + * column. This is not Vi compatible, but Vi deletes the marks, thus that + * should not really be a problem. + */ + for (t = count - 1;; --t) { + cend -= currsize; + memmove(cend, curr, (size_t)currsize); + if (spaces[t] > 0) { + cend -= spaces[t]; + copy_spaces(cend, (size_t)(spaces[t])); + } + mark_col_adjust(curwin->w_cursor.lnum + t, (colnr_T)0, (linenr_T)-t, + (long)(cend - newp + spaces[t] - (curr - curr_start))); + if (t == 0) + break; + curr = curr_start = ml_get((linenr_T)(curwin->w_cursor.lnum + t - 1)); + if (remove_comments) + curr += comments[t - 1]; + if (insert_space && t > 1) + curr = skipwhite(curr); + currsize = (int)STRLEN(curr); + } + ml_replace(curwin->w_cursor.lnum, newp, FALSE); + + // Set the '] mark. + curwin->w_buffer->b_op_end.lnum = curwin->w_cursor.lnum; + curwin->w_buffer->b_op_end.col = (colnr_T)STRLEN(newp); + + /* Only report the change in the first line here, del_lines() will report + * the deleted line. */ + changed_lines(curwin->w_cursor.lnum, currsize, + curwin->w_cursor.lnum + 1, 0L); + + /* + * Delete following lines. To do this we move the cursor there + * briefly, and then move it back. After del_lines() the cursor may + * have moved up (last line deleted), so the current lnum is kept in t. + */ + t = curwin->w_cursor.lnum; + ++curwin->w_cursor.lnum; + del_lines(count - 1, FALSE); + curwin->w_cursor.lnum = t; + + /* + * Set the cursor column: + * Vi compatible: use the column of the first join + * vim: use the column of the last join + */ + curwin->w_cursor.col = + (vim_strchr(p_cpo, CPO_JOINCOL) != NULL ? currsize : col); + check_cursor_col(); + + curwin->w_cursor.coladd = 0; + curwin->w_set_curswant = TRUE; + +theend: + free(spaces); + if (remove_comments) + free(comments); + return ret; +} + +/* + * Return TRUE if the two comment leaders given are the same. "lnum" is + * the first line. White-space is ignored. Note that the whole of + * 'leader1' must match 'leader2_len' characters from 'leader2' -- webb + */ +static int same_leader(linenr_T lnum, int leader1_len, char_u *leader1_flags, int leader2_len, char_u *leader2_flags) +{ + int idx1 = 0, idx2 = 0; + char_u *p; + char_u *line1; + char_u *line2; + + if (leader1_len == 0) + return leader2_len == 0; + + /* + * If first leader has 'f' flag, the lines can be joined only if the + * second line does not have a leader. + * If first leader has 'e' flag, the lines can never be joined. + * If fist leader has 's' flag, the lines can only be joined if there is + * some text after it and the second line has the 'm' flag. + */ + if (leader1_flags != NULL) { + for (p = leader1_flags; *p && *p != ':'; ++p) { + if (*p == COM_FIRST) + return leader2_len == 0; + if (*p == COM_END) + return FALSE; + if (*p == COM_START) { + if (*(ml_get(lnum) + leader1_len) == NUL) + return FALSE; + if (leader2_flags == NULL || leader2_len == 0) + return FALSE; + for (p = leader2_flags; *p && *p != ':'; ++p) + if (*p == COM_MIDDLE) + return TRUE; + return FALSE; + } + } + } + + /* + * Get current line and next line, compare the leaders. + * The first line has to be saved, only one line can be locked at a time. + */ + line1 = vim_strsave(ml_get(lnum)); + if (line1 != NULL) { + for (idx1 = 0; vim_iswhite(line1[idx1]); ++idx1) + ; + line2 = ml_get(lnum + 1); + for (idx2 = 0; idx2 < leader2_len; ++idx2) { + if (!vim_iswhite(line2[idx2])) { + if (line1[idx1++] != line2[idx2]) + break; + } else + while (vim_iswhite(line1[idx1])) + ++idx1; + } + free(line1); + } + return idx2 == leader2_len && idx1 == leader1_len; +} + +/* + * Implementation of the format operator 'gq'. + */ +void +op_format ( + oparg_T *oap, + int keep_cursor /* keep cursor on same text char */ +) +{ + long old_line_count = curbuf->b_ml.ml_line_count; + + /* Place the cursor where the "gq" or "gw" command was given, so that "u" + * can put it back there. */ + curwin->w_cursor = oap->cursor_start; + + if (u_save((linenr_T)(oap->start.lnum - 1), + (linenr_T)(oap->end.lnum + 1)) == FAIL) + return; + curwin->w_cursor = oap->start; + + if (oap->is_VIsual) + /* When there is no change: need to remove the Visual selection */ + redraw_curbuf_later(INVERTED); + + /* Set '[ mark at the start of the formatted area */ + curbuf->b_op_start = oap->start; + + /* For "gw" remember the cursor position and put it back below (adjusted + * for joined and split lines). */ + if (keep_cursor) + saved_cursor = oap->cursor_start; + + format_lines(oap->line_count, keep_cursor); + + /* + * Leave the cursor at the first non-blank of the last formatted line. + * If the cursor was moved one line back (e.g. with "Q}") go to the next + * line, so "." will do the next lines. + */ + if (oap->end_adjusted && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) + ++curwin->w_cursor.lnum; + beginline(BL_WHITE | BL_FIX); + old_line_count = curbuf->b_ml.ml_line_count - old_line_count; + msgmore(old_line_count); + + /* put '] mark on the end of the formatted area */ + curbuf->b_op_end = curwin->w_cursor; + + if (keep_cursor) { + curwin->w_cursor = saved_cursor; + saved_cursor.lnum = 0; + } + + if (oap->is_VIsual) { + win_T *wp; + + FOR_ALL_WINDOWS(wp) + { + if (wp->w_old_cursor_lnum != 0) { + /* When lines have been inserted or deleted, adjust the end of + * the Visual area to be redrawn. */ + if (wp->w_old_cursor_lnum > wp->w_old_visual_lnum) + wp->w_old_cursor_lnum += old_line_count; + else + wp->w_old_visual_lnum += old_line_count; + } + } + } +} + +/* + * Implementation of the format operator 'gq' for when using 'formatexpr'. + */ +void op_formatexpr(oparg_T *oap) +{ + if (oap->is_VIsual) + /* When there is no change: need to remove the Visual selection */ + redraw_curbuf_later(INVERTED); + + if (fex_format(oap->start.lnum, oap->line_count, NUL) != 0) + /* As documented: when 'formatexpr' returns non-zero fall back to + * internal formatting. */ + op_format(oap, FALSE); +} + +int +fex_format ( + linenr_T lnum, + long count, + int c /* character to be inserted */ +) +{ + int use_sandbox = was_set_insecurely((char_u *)"formatexpr", + OPT_LOCAL); + int r; + + /* + * Set v:lnum to the first line number and v:count to the number of lines. + * Set v:char to the character to be inserted (can be NUL). + */ + set_vim_var_nr(VV_LNUM, lnum); + set_vim_var_nr(VV_COUNT, count); + set_vim_var_char(c); + + /* + * Evaluate the function. + */ + if (use_sandbox) + ++sandbox; + r = eval_to_number(curbuf->b_p_fex); + if (use_sandbox) + --sandbox; + + set_vim_var_string(VV_CHAR, NULL, -1); + + return r; +} + +/* + * Format "line_count" lines, starting at the cursor position. + * When "line_count" is negative, format until the end of the paragraph. + * Lines after the cursor line are saved for undo, caller must have saved the + * first line. + */ +void +format_lines ( + linenr_T line_count, + int avoid_fex /* don't use 'formatexpr' */ +) +{ + int max_len; + int is_not_par; /* current line not part of parag. */ + int next_is_not_par; /* next line not part of paragraph */ + int is_end_par; /* at end of paragraph */ + int prev_is_end_par = FALSE; /* prev. line not part of parag. */ + int next_is_start_par = FALSE; + int leader_len = 0; /* leader len of current line */ + int next_leader_len; /* leader len of next line */ + char_u *leader_flags = NULL; /* flags for leader of current line */ + char_u *next_leader_flags; /* flags for leader of next line */ + int do_comments; /* format comments */ + int do_comments_list = 0; /* format comments with 'n' or '2' */ + int advance = TRUE; + int second_indent = -1; /* indent for second line (comment + * aware) */ + int do_second_indent; + int do_number_indent; + int do_trail_white; + int first_par_line = TRUE; + int smd_save; + long count; + int need_set_indent = TRUE; /* set indent of next paragraph */ + int force_format = FALSE; + int old_State = State; + + /* length of a line to force formatting: 3 * 'tw' */ + max_len = comp_textwidth(TRUE) * 3; + + /* check for 'q', '2' and '1' in 'formatoptions' */ + do_comments = has_format_option(FO_Q_COMS); + do_second_indent = has_format_option(FO_Q_SECOND); + do_number_indent = has_format_option(FO_Q_NUMBER); + do_trail_white = has_format_option(FO_WHITE_PAR); + + /* + * Get info about the previous and current line. + */ + if (curwin->w_cursor.lnum > 1) + is_not_par = fmt_check_par(curwin->w_cursor.lnum - 1 + , &leader_len, &leader_flags, do_comments + ); + else + is_not_par = TRUE; + next_is_not_par = fmt_check_par(curwin->w_cursor.lnum + , &next_leader_len, &next_leader_flags, do_comments + ); + is_end_par = (is_not_par || next_is_not_par); + if (!is_end_par && do_trail_white) + is_end_par = !ends_in_white(curwin->w_cursor.lnum - 1); + + curwin->w_cursor.lnum--; + for (count = line_count; count != 0 && !got_int; --count) { + /* + * Advance to next paragraph. + */ + if (advance) { + curwin->w_cursor.lnum++; + prev_is_end_par = is_end_par; + is_not_par = next_is_not_par; + leader_len = next_leader_len; + leader_flags = next_leader_flags; + } + + /* + * The last line to be formatted. + */ + if (count == 1 || curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count) { + next_is_not_par = TRUE; + next_leader_len = 0; + next_leader_flags = NULL; + } else { + next_is_not_par = fmt_check_par(curwin->w_cursor.lnum + 1 + , &next_leader_len, &next_leader_flags, do_comments + ); + if (do_number_indent) + next_is_start_par = + (get_number_indent(curwin->w_cursor.lnum + 1) > 0); + } + advance = TRUE; + is_end_par = (is_not_par || next_is_not_par || next_is_start_par); + if (!is_end_par && do_trail_white) + is_end_par = !ends_in_white(curwin->w_cursor.lnum); + + /* + * Skip lines that are not in a paragraph. + */ + if (is_not_par) { + if (line_count < 0) + break; + } else { + /* + * For the first line of a paragraph, check indent of second line. + * Don't do this for comments and empty lines. + */ + if (first_par_line + && (do_second_indent || do_number_indent) + && prev_is_end_par + && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) { + if (do_second_indent && !lineempty(curwin->w_cursor.lnum + 1)) { + if (leader_len == 0 && next_leader_len == 0) { + /* no comment found */ + second_indent = + get_indent_lnum(curwin->w_cursor.lnum + 1); + } else { + second_indent = next_leader_len; + do_comments_list = 1; + } + } else if (do_number_indent) { + if (leader_len == 0 && next_leader_len == 0) { + /* no comment found */ + second_indent = + get_number_indent(curwin->w_cursor.lnum); + } else { + /* get_number_indent() is now "comment aware"... */ + second_indent = + get_number_indent(curwin->w_cursor.lnum); + do_comments_list = 1; + } + } + } + + /* + * When the comment leader changes, it's the end of the paragraph. + */ + if (curwin->w_cursor.lnum >= curbuf->b_ml.ml_line_count + || !same_leader(curwin->w_cursor.lnum, + leader_len, leader_flags, + next_leader_len, next_leader_flags) + ) + is_end_par = TRUE; + + /* + * If we have got to the end of a paragraph, or the line is + * getting long, format it. + */ + if (is_end_par || force_format) { + if (need_set_indent) + /* replace indent in first line with minimal number of + * tabs and spaces, according to current options */ + (void)set_indent(get_indent(), SIN_CHANGED); + + /* put cursor on last non-space */ + State = NORMAL; /* don't go past end-of-line */ + coladvance((colnr_T)MAXCOL); + while (curwin->w_cursor.col && vim_isspace(gchar_cursor())) + dec_cursor(); + + /* do the formatting, without 'showmode' */ + State = INSERT; /* for open_line() */ + smd_save = p_smd; + p_smd = FALSE; + insertchar(NUL, INSCHAR_FORMAT + + (do_comments ? INSCHAR_DO_COM : 0) + + (do_comments && do_comments_list + ? INSCHAR_COM_LIST : 0) + + (avoid_fex ? INSCHAR_NO_FEX : 0), second_indent); + State = old_State; + p_smd = smd_save; + second_indent = -1; + /* at end of par.: need to set indent of next par. */ + need_set_indent = is_end_par; + if (is_end_par) { + /* When called with a negative line count, break at the + * end of the paragraph. */ + if (line_count < 0) + break; + first_par_line = TRUE; + } + force_format = FALSE; + } + + /* + * When still in same paragraph, join the lines together. But + * first delete the leader from the second line. + */ + if (!is_end_par) { + advance = FALSE; + curwin->w_cursor.lnum++; + curwin->w_cursor.col = 0; + if (line_count < 0 && u_save_cursor() == FAIL) + break; + if (next_leader_len > 0) { + (void)del_bytes((long)next_leader_len, FALSE, FALSE); + mark_col_adjust(curwin->w_cursor.lnum, (colnr_T)0, 0L, + (long)-next_leader_len); + } else if (second_indent > 0) { /* the "leader" for FO_Q_SECOND */ + char_u *p = ml_get_curline(); + int indent = (int)(skipwhite(p) - p); + + if (indent > 0) { + (void)del_bytes(indent, FALSE, FALSE); + mark_col_adjust(curwin->w_cursor.lnum, + (colnr_T)0, 0L, (long)-indent); + } + } + curwin->w_cursor.lnum--; + if (do_join(2, TRUE, FALSE, FALSE) == FAIL) { + beep_flush(); + break; + } + first_par_line = FALSE; + /* If the line is getting long, format it next time */ + if (STRLEN(ml_get_curline()) > (size_t)max_len) + force_format = TRUE; + else + force_format = FALSE; + } + } + line_breakcheck(); + } +} + +/* + * Return TRUE if line "lnum" ends in a white character. + */ +static int ends_in_white(linenr_T lnum) +{ + char_u *s = ml_get(lnum); + size_t l; + + if (*s == NUL) + return FALSE; + /* Don't use STRLEN() inside vim_iswhite(), SAS/C complains: "macro + * invocation may call function multiple times". */ + l = STRLEN(s) - 1; + return vim_iswhite(s[l]); +} + +/* + * Blank lines, and lines containing only the comment leader, are left + * untouched by the formatting. The function returns TRUE in this + * case. It also returns TRUE when a line starts with the end of a comment + * ('e' in comment flags), so that this line is skipped, and not joined to the + * previous line. A new paragraph starts after a blank line, or when the + * comment leader changes -- webb. + */ +static int fmt_check_par(linenr_T lnum, int *leader_len, char_u **leader_flags, int do_comments) +{ + char_u *flags = NULL; /* init for GCC */ + char_u *ptr; + + ptr = ml_get(lnum); + if (do_comments) + *leader_len = get_leader_len(ptr, leader_flags, FALSE, TRUE); + else + *leader_len = 0; + + if (*leader_len > 0) { + /* + * Search for 'e' flag in comment leader flags. + */ + flags = *leader_flags; + while (*flags && *flags != ':' && *flags != COM_END) + ++flags; + } + + return *skipwhite(ptr + *leader_len) == NUL + || (*leader_len > 0 && *flags == COM_END) + || startPS(lnum, NUL, FALSE); +} + +/* + * Return TRUE when a paragraph starts in line "lnum". Return FALSE when the + * previous line is in the same paragraph. Used for auto-formatting. + */ +int paragraph_start(linenr_T lnum) +{ + char_u *p; + int leader_len = 0; /* leader len of current line */ + char_u *leader_flags = NULL; /* flags for leader of current line */ + int next_leader_len = 0; /* leader len of next line */ + char_u *next_leader_flags = NULL; /* flags for leader of next line */ + int do_comments; /* format comments */ + + if (lnum <= 1) + return TRUE; /* start of the file */ + + p = ml_get(lnum - 1); + if (*p == NUL) + return TRUE; /* after empty line */ + + do_comments = has_format_option(FO_Q_COMS); + if (fmt_check_par(lnum - 1 + , &leader_len, &leader_flags, do_comments + )) + return TRUE; /* after non-paragraph line */ + + if (fmt_check_par(lnum + , &next_leader_len, &next_leader_flags, do_comments + )) + return TRUE; /* "lnum" is not a paragraph line */ + + if (has_format_option(FO_WHITE_PAR) && !ends_in_white(lnum - 1)) + return TRUE; /* missing trailing space in previous line. */ + + if (has_format_option(FO_Q_NUMBER) && (get_number_indent(lnum) > 0)) + return TRUE; /* numbered item starts in "lnum". */ + + if (!same_leader(lnum - 1, leader_len, leader_flags, + next_leader_len, next_leader_flags)) + return TRUE; /* change of comment leader. */ + + return FALSE; +} + +/* + * prepare a few things for block mode yank/delete/tilde + * + * for delete: + * - textlen includes the first/last char to be (partly) deleted + * - start/endspaces is the number of columns that are taken by the + * first/last deleted char minus the number of columns that have to be + * deleted. + * for yank and tilde: + * - textlen includes the first/last char to be wholly yanked + * - start/endspaces is the number of columns of the first/last yanked char + * that are to be yanked. + */ +static void block_prep(oparg_T *oap, struct block_def *bdp, linenr_T lnum, int is_del) +{ + int incr = 0; + char_u *pend; + char_u *pstart; + char_u *line; + char_u *prev_pstart; + char_u *prev_pend; + + bdp->startspaces = 0; + bdp->endspaces = 0; + bdp->textlen = 0; + bdp->start_vcol = 0; + bdp->end_vcol = 0; + bdp->is_short = FALSE; + bdp->is_oneChar = FALSE; + bdp->pre_whitesp = 0; + bdp->pre_whitesp_c = 0; + bdp->end_char_vcols = 0; + bdp->start_char_vcols = 0; + + line = ml_get(lnum); + pstart = line; + prev_pstart = line; + while (bdp->start_vcol < oap->start_vcol && *pstart) { + /* Count a tab for what it's worth (if list mode not on) */ + incr = lbr_chartabsize(pstart, (colnr_T)bdp->start_vcol); + bdp->start_vcol += incr; + if (vim_iswhite(*pstart)) { + bdp->pre_whitesp += incr; + bdp->pre_whitesp_c++; + } else { + bdp->pre_whitesp = 0; + bdp->pre_whitesp_c = 0; + } + prev_pstart = pstart; + mb_ptr_adv(pstart); + } + bdp->start_char_vcols = incr; + if (bdp->start_vcol < oap->start_vcol) { /* line too short */ + bdp->end_vcol = bdp->start_vcol; + bdp->is_short = TRUE; + if (!is_del || oap->op_type == OP_APPEND) + bdp->endspaces = oap->end_vcol - oap->start_vcol + 1; + } else { + /* notice: this converts partly selected Multibyte characters to + * spaces, too. */ + bdp->startspaces = bdp->start_vcol - oap->start_vcol; + if (is_del && bdp->startspaces) + bdp->startspaces = bdp->start_char_vcols - bdp->startspaces; + pend = pstart; + bdp->end_vcol = bdp->start_vcol; + if (bdp->end_vcol > oap->end_vcol) { /* it's all in one character */ + bdp->is_oneChar = TRUE; + if (oap->op_type == OP_INSERT) + bdp->endspaces = bdp->start_char_vcols - bdp->startspaces; + else if (oap->op_type == OP_APPEND) { + bdp->startspaces += oap->end_vcol - oap->start_vcol + 1; + bdp->endspaces = bdp->start_char_vcols - bdp->startspaces; + } else { + bdp->startspaces = oap->end_vcol - oap->start_vcol + 1; + if (is_del && oap->op_type != OP_LSHIFT) { + /* just putting the sum of those two into + * bdp->startspaces doesn't work for Visual replace, + * so we have to split the tab in two */ + bdp->startspaces = bdp->start_char_vcols + - (bdp->start_vcol - oap->start_vcol); + bdp->endspaces = bdp->end_vcol - oap->end_vcol - 1; + } + } + } else { + prev_pend = pend; + while (bdp->end_vcol <= oap->end_vcol && *pend != NUL) { + /* Count a tab for what it's worth (if list mode not on) */ + prev_pend = pend; + incr = lbr_chartabsize_adv(&pend, (colnr_T)bdp->end_vcol); + bdp->end_vcol += incr; + } + if (bdp->end_vcol <= oap->end_vcol + && (!is_del + || oap->op_type == OP_APPEND + || oap->op_type == OP_REPLACE)) { /* line too short */ + bdp->is_short = TRUE; + /* Alternative: include spaces to fill up the block. + * Disadvantage: can lead to trailing spaces when the line is + * short where the text is put */ + /* if (!is_del || oap->op_type == OP_APPEND) */ + if (oap->op_type == OP_APPEND || virtual_op) + bdp->endspaces = oap->end_vcol - bdp->end_vcol + + oap->inclusive; + else + bdp->endspaces = 0; /* replace doesn't add characters */ + } else if (bdp->end_vcol > oap->end_vcol) { + bdp->endspaces = bdp->end_vcol - oap->end_vcol - 1; + if (!is_del && bdp->endspaces) { + bdp->endspaces = incr - bdp->endspaces; + if (pend != pstart) + pend = prev_pend; + } + } + } + bdp->end_char_vcols = incr; + if (is_del && bdp->startspaces) + pstart = prev_pstart; + bdp->textlen = (int)(pend - pstart); + } + bdp->textcol = (colnr_T) (pstart - line); + bdp->textstart = pstart; +} + +static void reverse_line(char_u *s); + +static void reverse_line(char_u *s) +{ + int i, j; + char_u c; + + if ((i = (int)STRLEN(s) - 1) <= 0) + return; + + curwin->w_cursor.col = i - curwin->w_cursor.col; + for (j = 0; j < i; j++, i--) { + c = s[i]; s[i] = s[j]; s[j] = c; + } +} + +# define RLADDSUBFIX(ptr) if (curwin->w_p_rl) reverse_line(ptr); + +/* + * add or subtract 'Prenum1' from a number in a line + * 'command' is CTRL-A for add, CTRL-X for subtract + * + * return FAIL for failure, OK otherwise + */ +int do_addsub(int command, linenr_T Prenum1) +{ + int col; + char_u *buf1; + char_u buf2[NUMBUFLEN]; + int hex; /* 'X' or 'x': hex; '0': octal */ + static int hexupper = FALSE; /* 0xABC */ + unsigned long n; + long_u oldn; + char_u *ptr; + int c; + int length = 0; /* character length of the number */ + int todel; + int dohex; + int dooct; + int doalp; + int firstdigit; + int negative; + int subtract; + + dohex = (vim_strchr(curbuf->b_p_nf, 'x') != NULL); /* "heX" */ + dooct = (vim_strchr(curbuf->b_p_nf, 'o') != NULL); /* "Octal" */ + doalp = (vim_strchr(curbuf->b_p_nf, 'p') != NULL); /* "alPha" */ + + ptr = ml_get_curline(); + RLADDSUBFIX(ptr); + + /* + * First check if we are on a hexadecimal number, after the "0x". + */ + col = curwin->w_cursor.col; + if (dohex) + while (col > 0 && vim_isxdigit(ptr[col])) + --col; + if ( dohex + && col > 0 + && (ptr[col] == 'X' + || ptr[col] == 'x') + && ptr[col - 1] == '0' + && vim_isxdigit(ptr[col + 1])) { + /* + * Found hexadecimal number, move to its start. + */ + --col; + } else { + /* + * Search forward and then backward to find the start of number. + */ + col = curwin->w_cursor.col; + + while (ptr[col] != NUL + && !vim_isdigit(ptr[col]) + && !(doalp && ASCII_ISALPHA(ptr[col]))) + ++col; + + while (col > 0 + && vim_isdigit(ptr[col - 1]) + && !(doalp && ASCII_ISALPHA(ptr[col]))) + --col; + } + + /* + * If a number was found, and saving for undo works, replace the number. + */ + firstdigit = ptr[col]; + RLADDSUBFIX(ptr); + if ((!VIM_ISDIGIT(firstdigit) && !(doalp && ASCII_ISALPHA(firstdigit))) + || u_save_cursor() != OK) { + beep_flush(); + return FAIL; + } + + /* get ptr again, because u_save() may have changed it */ + ptr = ml_get_curline(); + RLADDSUBFIX(ptr); + + if (doalp && ASCII_ISALPHA(firstdigit)) { + /* decrement or increment alphabetic character */ + if (command == Ctrl_X) { + if (CharOrd(firstdigit) < Prenum1) { + if (isupper(firstdigit)) + firstdigit = 'A'; + else + firstdigit = 'a'; + } else + firstdigit -= Prenum1; + } else { + if (26 - CharOrd(firstdigit) - 1 < Prenum1) { + if (isupper(firstdigit)) + firstdigit = 'Z'; + else + firstdigit = 'z'; + } else + firstdigit += Prenum1; + } + curwin->w_cursor.col = col; + (void)del_char(FALSE); + ins_char(firstdigit); + } else { + negative = FALSE; + if (col > 0 && ptr[col - 1] == '-') { /* negative number */ + --col; + negative = TRUE; + } + + /* get the number value (unsigned) */ + vim_str2nr(ptr + col, &hex, &length, dooct, dohex, NULL, &n); + + /* ignore leading '-' for hex and octal numbers */ + if (hex && negative) { + ++col; + --length; + negative = FALSE; + } + + /* add or subtract */ + subtract = FALSE; + if (command == Ctrl_X) + subtract ^= TRUE; + if (negative) + subtract ^= TRUE; + + oldn = n; + if (subtract) + n -= (unsigned long)Prenum1; + else + n += (unsigned long)Prenum1; + + /* handle wraparound for decimal numbers */ + if (!hex) { + if (subtract) { + if (n > oldn) { + n = 1 + (n ^ (unsigned long)-1); + negative ^= TRUE; + } + } else { /* add */ + if (n < oldn) { + n = (n ^ (unsigned long)-1); + negative ^= TRUE; + } + } + if (n == 0) + negative = FALSE; + } + + /* + * Delete the old number. + */ + curwin->w_cursor.col = col; + todel = length; + c = gchar_cursor(); + /* + * Don't include the '-' in the length, only the length of the part + * after it is kept the same. + */ + if (c == '-') + --length; + while (todel-- > 0) { + if (c < 0x100 && isalpha(c)) { + if (isupper(c)) + hexupper = TRUE; + else + hexupper = FALSE; + } + /* del_char() will mark line needing displaying */ + (void)del_char(FALSE); + c = gchar_cursor(); + } + + /* + * Prepare the leading characters in buf1[]. + * When there are many leading zeros it could be very long. Allocate + * a bit too much. + */ + buf1 = alloc((unsigned)length + NUMBUFLEN); + ptr = buf1; + if (negative) { + *ptr++ = '-'; + } + if (hex) { + *ptr++ = '0'; + --length; + } + if (hex == 'x' || hex == 'X') { + *ptr++ = hex; + --length; + } + + /* + * Put the number characters in buf2[]. + */ + if (hex == 0) + sprintf((char *)buf2, "%" PRIu64, (uint64_t)n); + else if (hex == '0') + sprintf((char *)buf2, "%" PRIo64, (uint64_t)n); + else if (hex && hexupper) + sprintf((char *)buf2, "%" PRIX64, (uint64_t)n); + else + sprintf((char *)buf2, "%" PRIx64, (uint64_t)n); + length -= (int)STRLEN(buf2); + + /* + * Adjust number of zeros to the new number of digits, so the + * total length of the number remains the same. + * Don't do this when + * the result may look like an octal number. + */ + if (firstdigit == '0' && !(dooct && hex == 0)) + while (length-- > 0) + *ptr++ = '0'; + *ptr = NUL; + STRCAT(buf1, buf2); + ins_str(buf1); /* insert the new number */ + free(buf1); + } + --curwin->w_cursor.col; + curwin->w_set_curswant = TRUE; + ptr = ml_get_buf(curbuf, curwin->w_cursor.lnum, TRUE); + RLADDSUBFIX(ptr); + return OK; +} + +int read_viminfo_register(vir_T *virp, int force) +{ + int eof; + int do_it = TRUE; + int size; + int limit; + int i; + int set_prev = FALSE; + char_u *str; + char_u **array = NULL; + + /* We only get here (hopefully) if line[0] == '"' */ + str = virp->vir_line + 1; + + /* If the line starts with "" this is the y_previous register. */ + if (*str == '"') { + set_prev = TRUE; + str++; + } + + if (!ASCII_ISALNUM(*str) && *str != '-') { + if (viminfo_error("E577: ", _("Illegal register name"), virp->vir_line)) + return TRUE; /* too many errors, pretend end-of-file */ + do_it = FALSE; + } + get_yank_register(*str++, FALSE); + if (!force && y_current->y_array != NULL) + do_it = FALSE; + + if (*str == '@') { + /* "x@: register x used for @@ */ + if (force || execreg_lastc == NUL) + execreg_lastc = str[-1]; + } + + size = 0; + limit = 100; /* Optimized for registers containing <= 100 lines */ + if (do_it) { + if (set_prev) + y_previous = y_current; + free(y_current->y_array); + array = y_current->y_array = + (char_u **)alloc((unsigned)(limit * sizeof(char_u *))); + str = skipwhite(skiptowhite(str)); + if (STRNCMP(str, "CHAR", 4) == 0) + y_current->y_type = MCHAR; + else if (STRNCMP(str, "BLOCK", 5) == 0) + y_current->y_type = MBLOCK; + else + y_current->y_type = MLINE; + /* get the block width; if it's missing we get a zero, which is OK */ + str = skipwhite(skiptowhite(str)); + y_current->y_width = getdigits(&str); + } + + while (!(eof = viminfo_readline(virp)) + && (virp->vir_line[0] == TAB || virp->vir_line[0] == '<')) { + if (do_it) { + if (size >= limit) { + y_current->y_array = (char_u **) + alloc((unsigned)(limit * 2 * sizeof(char_u *))); + for (i = 0; i < limit; i++) + y_current->y_array[i] = array[i]; + free(array); + limit *= 2; + array = y_current->y_array; + } + str = viminfo_readstring(virp, 1, TRUE); + if (str != NULL) + array[size++] = str; + else + do_it = FALSE; + } + } + if (do_it) { + if (size == 0) { + free(array); + y_current->y_array = NULL; + } else if (size < limit) { + y_current->y_array = + (char_u **)alloc((unsigned)(size * sizeof(char_u *))); + for (i = 0; i < size; i++) + y_current->y_array[i] = array[i]; + free(array); + } + y_current->y_size = size; + } + return eof; +} + +void write_viminfo_registers(FILE *fp) +{ + int i, j; + char_u *type; + char_u c; + int num_lines; + int max_num_lines; + int max_kbyte; + long len; + + fputs(_("\n# Registers:\n"), fp); + + /* Get '<' value, use old '"' value if '<' is not found. */ + max_num_lines = get_viminfo_parameter('<'); + if (max_num_lines < 0) + max_num_lines = get_viminfo_parameter('"'); + if (max_num_lines == 0) + return; + max_kbyte = get_viminfo_parameter('s'); + if (max_kbyte == 0) + return; + + for (i = 0; i < NUM_REGISTERS; i++) { + if (y_regs[i].y_array == NULL) + continue; + /* Skip empty registers. */ + num_lines = y_regs[i].y_size; + if (num_lines == 0 + || (num_lines == 1 && y_regs[i].y_type == MCHAR + && *y_regs[i].y_array[0] == NUL)) + continue; + + if (max_kbyte > 0) { + /* Skip register if there is more text than the maximum size. */ + len = 0; + for (j = 0; j < num_lines; j++) + len += (long)STRLEN(y_regs[i].y_array[j]) + 1L; + if (len > (long)max_kbyte * 1024L) + continue; + } + + switch (y_regs[i].y_type) { + case MLINE: + type = (char_u *)"LINE"; + break; + case MCHAR: + type = (char_u *)"CHAR"; + break; + case MBLOCK: + type = (char_u *)"BLOCK"; + break; + default: + sprintf((char *)IObuff, _("E574: Unknown register type %d"), + y_regs[i].y_type); + emsg(IObuff); + type = (char_u *)"LINE"; + break; + } + if (y_previous == &y_regs[i]) + fprintf(fp, "\""); + c = get_register_name(i); + fprintf(fp, "\"%c", c); + if (c == execreg_lastc) + fprintf(fp, "@"); + fprintf(fp, "\t%s\t%d\n", type, + (int)y_regs[i].y_width + ); + + /* If max_num_lines < 0, then we save ALL the lines in the register */ + if (max_num_lines > 0 && num_lines > max_num_lines) + num_lines = max_num_lines; + for (j = 0; j < num_lines; j++) { + putc('\t', fp); + viminfo_writestring(fp, y_regs[i].y_array[j]); + } + } +} + + + + + +/* + * Return the type of a register. + * Used for getregtype() + * Returns MAUTO for error. + */ +char_u get_reg_type(int regname, long *reglen) +{ + switch (regname) { + case '%': /* file name */ + case '#': /* alternate file name */ + case '=': /* expression */ + case ':': /* last command line */ + case '/': /* last search-pattern */ + case '.': /* last inserted text */ + case Ctrl_F: /* Filename under cursor */ + case Ctrl_P: /* Path under cursor, expand via "path" */ + case Ctrl_W: /* word under cursor */ + case Ctrl_A: /* WORD (mnemonic All) under cursor */ + case '_': /* black hole: always empty */ + return MCHAR; + } + + + if (regname != NUL && !valid_yank_reg(regname, FALSE)) + return MAUTO; + + get_yank_register(regname, FALSE); + + if (y_current->y_array != NULL) { + if (reglen != NULL && y_current->y_type == MBLOCK) + *reglen = y_current->y_width; + return y_current->y_type; + } + return MAUTO; +} + +/* + * Return the contents of a register as a single allocated string. + * Used for "@r" in expressions and for getreg(). + * Returns NULL for error. + */ +char_u * +get_reg_contents ( + int regname, + int allowexpr, /* allow "=" register */ + int expr_src /* get expression for "=" register */ +) +{ + long i; + char_u *retval; + int allocated; + + /* Don't allow using an expression register inside an expression */ + if (regname == '=') { + if (allowexpr) { + if (expr_src) + return get_expr_line_src(); + return get_expr_line(); + } + return NULL; + } + + if (regname == '@') /* "@@" is used for unnamed register */ + regname = '"'; + + /* check for valid regname */ + if (regname != NUL && !valid_yank_reg(regname, FALSE)) + return NULL; + + + if (get_spec_reg(regname, &retval, &allocated, FALSE)) { + if (retval == NULL) + return NULL; + if (!allocated) + retval = vim_strsave(retval); + return retval; + } + + get_yank_register(regname, FALSE); + if (y_current->y_array == NULL) + return NULL; + + /* + * Compute length of resulting string. + */ + size_t len = 0; + for (i = 0; i < y_current->y_size; ++i) { + len += STRLEN(y_current->y_array[i]); + /* + * Insert a newline between lines and after last line if + * y_type is MLINE. + */ + if (y_current->y_type == MLINE || i < y_current->y_size - 1) + ++len; + } + + retval = xmalloc(len + 1); + + /* + * Copy the lines of the yank register into the string. + */ + len = 0; + for (i = 0; i < y_current->y_size; ++i) { + STRCPY(retval + len, y_current->y_array[i]); + len += STRLEN(retval + len); + + /* + * Insert a NL between lines and after the last line if y_type is + * MLINE. + */ + if (y_current->y_type == MLINE || i < y_current->y_size - 1) + retval[len++] = '\n'; + } + retval[len] = NUL; + + return retval; +} + +/* + * Store string "str" in register "name". + * "maxlen" is the maximum number of bytes to use, -1 for all bytes. + * If "must_append" is TRUE, always append to the register. Otherwise append + * if "name" is an uppercase letter. + * Note: "maxlen" and "must_append" don't work for the "/" register. + * Careful: 'str' is modified, you may have to use a copy! + * If "str" ends in '\n' or '\r', use linewise, otherwise use characterwise. + */ +void write_reg_contents(int name, char_u *str, int maxlen, int must_append) +{ + write_reg_contents_ex(name, str, maxlen, must_append, MAUTO, 0L); +} + +void write_reg_contents_ex(int name, char_u *str, int maxlen, int must_append, int yank_type, long block_len) +{ + struct yankreg *old_y_previous, *old_y_current; + long len; + + if (maxlen >= 0) + len = maxlen; + else + len = (long)STRLEN(str); + + /* Special case: '/' search pattern */ + if (name == '/') { + set_last_search_pat(str, RE_SEARCH, TRUE, TRUE); + return; + } + + if (name == '=') { + char_u *p, *s; + + p = vim_strnsave(str, (int)len); + if (p == NULL) + return; + if (must_append) { + s = concat_str(get_expr_line_src(), p); + free(p); + p = s; + + } + set_expr_line(p); + return; + } + + if (!valid_yank_reg(name, TRUE)) { /* check for valid reg name */ + emsg_invreg(name); + return; + } + + if (name == '_') /* black hole: nothing to do */ + return; + + /* Don't want to change the current (unnamed) register */ + old_y_previous = y_previous; + old_y_current = y_current; + + get_yank_register(name, TRUE); + if (!y_append && !must_append) + free_yank_all(); + str_to_reg(y_current, yank_type, str, len, block_len); + + + /* ':let @" = "val"' should change the meaning of the "" register */ + if (name != '"') + y_previous = old_y_previous; + y_current = old_y_current; +} + +/* + * Put a string into a register. When the register is not empty, the string + * is appended. + */ +static void +str_to_reg ( + struct yankreg *y_ptr, /* pointer to yank register */ + int yank_type, /* MCHAR, MLINE, MBLOCK, MAUTO */ + char_u *str, /* string to put in register */ + long len, /* length of string */ + long blocklen /* width of Visual block */ +) +{ + int type; /* MCHAR, MLINE or MBLOCK */ + int lnum; + long start; + long i; + int extra; + size_t newlines; /* number of lines added */ + int extraline = 0; /* extra line at the end */ + int append = FALSE; /* append to last line in register */ + char_u *s; + char_u **pp; + long maxlen; + + if (y_ptr->y_array == NULL) /* NULL means empty register */ + y_ptr->y_size = 0; + + if (yank_type == MAUTO) + type = ((len > 0 && (str[len - 1] == NL || str[len - 1] == CAR)) + ? MLINE : MCHAR); + else + type = yank_type; + + /* + * Count the number of lines within the string + */ + newlines = 0; + for (i = 0; i < len; i++) + if (str[i] == '\n') + ++newlines; + if (type == MCHAR || len == 0 || str[len - 1] != '\n') { + extraline = 1; + ++newlines; /* count extra newline at the end */ + } + if (y_ptr->y_size > 0 && y_ptr->y_type == MCHAR) { + append = TRUE; + --newlines; /* uncount newline when appending first line */ + } + + /* + * Allocate an array to hold the pointers to the new register lines. + * If the register was not empty, move the existing lines to the new array. + */ + pp = xcalloc((y_ptr->y_size + newlines), sizeof(char_u *)); + for (lnum = 0; lnum < y_ptr->y_size; ++lnum) + pp[lnum] = y_ptr->y_array[lnum]; + free(y_ptr->y_array); + y_ptr->y_array = pp; + maxlen = 0; + + /* + * Find the end of each line and save it into the array. + */ + for (start = 0; start < len + extraline; start += i + 1) { + for (i = start; i < len; ++i) /* find the end of the line */ + if (str[i] == '\n') + break; + i -= start; /* i is now length of line */ + if (i > maxlen) + maxlen = i; + if (append) { + --lnum; + extra = (int)STRLEN(y_ptr->y_array[lnum]); + } else + extra = 0; + s = alloc((unsigned)(i + extra + 1)); + if (extra) + memmove(s, y_ptr->y_array[lnum], (size_t)extra); + if (append) + free(y_ptr->y_array[lnum]); + if (i) + memmove(s + extra, str + start, (size_t)i); + extra += i; + s[extra] = NUL; + y_ptr->y_array[lnum++] = s; + while (--extra >= 0) { + if (*s == NUL) + *s = '\n'; /* replace NUL with newline */ + ++s; + } + append = FALSE; /* only first line is appended */ + } + y_ptr->y_type = type; + y_ptr->y_size = lnum; + if (type == MBLOCK) + y_ptr->y_width = (blocklen < 0 ? maxlen - 1 : blocklen); + else + y_ptr->y_width = 0; +} + +void clear_oparg(oparg_T *oap) +{ + memset(oap, 0, sizeof(oparg_T)); +} + +static long line_count_info(char_u *line, long *wc, long *cc, + long limit, + int eol_size); + +/* + * Count the number of bytes, characters and "words" in a line. + * + * "Words" are counted by looking for boundaries between non-space and + * space characters. (it seems to produce results that match 'wc'.) + * + * Return value is byte count; word count for the line is added to "*wc". + * Char count is added to "*cc". + * + * The function will only examine the first "limit" characters in the + * line, stopping if it encounters an end-of-line (NUL byte). In that + * case, eol_size will be added to the character count to account for + * the size of the EOL character. + */ +static long line_count_info(char_u *line, long *wc, long *cc, long limit, int eol_size) +{ + long i; + long words = 0; + long chars = 0; + int is_word = 0; + + for (i = 0; i < limit && line[i] != NUL; ) { + if (is_word) { + if (vim_isspace(line[i])) { + words++; + is_word = 0; + } + } else if (!vim_isspace(line[i])) + is_word = 1; + ++chars; + i += (*mb_ptr2len)(line + i); + } + + if (is_word) + words++; + *wc += words; + + /* Add eol_size if the end of line was reached before hitting limit. */ + if (i < limit && line[i] == NUL) { + i += eol_size; + chars += eol_size; + } + *cc += chars; + return i; +} + +/* + * Give some info about the position of the cursor (for "g CTRL-G"). + * In Visual mode, give some info about the selected region. (In this case, + * the *_count_cursor variables store running totals for the selection.) + */ +void cursor_pos_info(void) +{ + char_u *p; + char_u buf1[50]; + char_u buf2[40]; + linenr_T lnum; + long byte_count = 0; + long byte_count_cursor = 0; + long char_count = 0; + long char_count_cursor = 0; + long word_count = 0; + long word_count_cursor = 0; + int eol_size; + long last_check = 100000L; + long line_count_selected = 0; + pos_T min_pos, max_pos; + oparg_T oparg; + struct block_def bd; + + /* + * Compute the length of the file in characters. + */ + if (curbuf->b_ml.ml_flags & ML_EMPTY) { + MSG(_(no_lines_msg)); + } else { + if (get_fileformat(curbuf) == EOL_DOS) + eol_size = 2; + else + eol_size = 1; + + if (VIsual_active) { + if (lt(VIsual, curwin->w_cursor)) { + min_pos = VIsual; + max_pos = curwin->w_cursor; + } else { + min_pos = curwin->w_cursor; + max_pos = VIsual; + } + if (*p_sel == 'e' && max_pos.col > 0) + --max_pos.col; + + if (VIsual_mode == Ctrl_V) { + char_u * saved_sbr = p_sbr; + + /* Make 'sbr' empty for a moment to get the correct size. */ + p_sbr = empty_option; + oparg.is_VIsual = 1; + oparg.block_mode = TRUE; + oparg.op_type = OP_NOP; + getvcols(curwin, &min_pos, &max_pos, + &oparg.start_vcol, &oparg.end_vcol); + p_sbr = saved_sbr; + if (curwin->w_curswant == MAXCOL) + oparg.end_vcol = MAXCOL; + /* Swap the start, end vcol if needed */ + if (oparg.end_vcol < oparg.start_vcol) { + oparg.end_vcol += oparg.start_vcol; + oparg.start_vcol = oparg.end_vcol - oparg.start_vcol; + oparg.end_vcol -= oparg.start_vcol; + } + } + line_count_selected = max_pos.lnum - min_pos.lnum + 1; + } + + for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum) { + /* Check for a CTRL-C every 100000 characters. */ + if (byte_count > last_check) { + ui_breakcheck(); + if (got_int) + return; + last_check = byte_count + 100000L; + } + + /* Do extra processing for VIsual mode. */ + if (VIsual_active + && lnum >= min_pos.lnum && lnum <= max_pos.lnum) { + char_u *s = NULL; + long len = 0L; + + switch (VIsual_mode) { + case Ctrl_V: + virtual_op = virtual_active(); + block_prep(&oparg, &bd, lnum, 0); + virtual_op = MAYBE; + s = bd.textstart; + len = (long)bd.textlen; + break; + case 'V': + s = ml_get(lnum); + len = MAXCOL; + break; + case 'v': + { + colnr_T start_col = (lnum == min_pos.lnum) + ? min_pos.col : 0; + colnr_T end_col = (lnum == max_pos.lnum) + ? max_pos.col - start_col + 1 : MAXCOL; + + s = ml_get(lnum) + start_col; + len = end_col; + } + break; + } + if (s != NULL) { + byte_count_cursor += line_count_info(s, &word_count_cursor, + &char_count_cursor, len, eol_size); + if (lnum == curbuf->b_ml.ml_line_count + && !curbuf->b_p_eol + && curbuf->b_p_bin + && (long)STRLEN(s) < len) + byte_count_cursor -= eol_size; + } + } else { + /* In non-visual mode, check for the line the cursor is on */ + if (lnum == curwin->w_cursor.lnum) { + word_count_cursor += word_count; + char_count_cursor += char_count; + byte_count_cursor = byte_count + + line_count_info(ml_get(lnum), + &word_count_cursor, &char_count_cursor, + (long)(curwin->w_cursor.col + 1), eol_size); + } + } + /* Add to the running totals */ + byte_count += line_count_info(ml_get(lnum), &word_count, + &char_count, (long)MAXCOL, eol_size); + } + + /* Correction for when last line doesn't have an EOL. */ + if (!curbuf->b_p_eol && curbuf->b_p_bin) + byte_count -= eol_size; + + if (VIsual_active) { + if (VIsual_mode == Ctrl_V && curwin->w_curswant < MAXCOL) { + getvcols(curwin, &min_pos, &max_pos, &min_pos.col, + &max_pos.col); + vim_snprintf((char *)buf1, sizeof(buf1), _("%" PRId64 " Cols; "), + (int64_t)(oparg.end_vcol - oparg.start_vcol + 1)); + } else + buf1[0] = NUL; + + if (char_count_cursor == byte_count_cursor + && char_count == byte_count) + vim_snprintf((char *)IObuff, IOSIZE, + _("Selected %s%" PRId64 " of %" PRId64 " Lines; %" PRId64 + " of %" PRId64 " Words; %" PRId64 " of %" PRId64 " Bytes"), + buf1, (int64_t)line_count_selected, + (int64_t)curbuf->b_ml.ml_line_count, + (int64_t)word_count_cursor, (int64_t)word_count, + (int64_t)byte_count_cursor, (int64_t)byte_count); + else + vim_snprintf((char *)IObuff, IOSIZE, + _("Selected %s%" PRId64 " of %" PRId64 " Lines; %" PRId64 + " of %" PRId64 " Words; %" PRId64 " of %" PRId64 + " Chars; %" PRId64 " of %" PRId64 " Bytes"), + buf1, (int64_t)line_count_selected, + (int64_t)curbuf->b_ml.ml_line_count, + (int64_t)word_count_cursor, (int64_t)word_count, + (int64_t)char_count_cursor, (int64_t)char_count, + (int64_t)byte_count_cursor, (int64_t)byte_count); + } else { + p = ml_get_curline(); + validate_virtcol(); + col_print(buf1, sizeof(buf1), (int)curwin->w_cursor.col + 1, + (int)curwin->w_virtcol + 1); + col_print(buf2, sizeof(buf2), (int)STRLEN(p), linetabsize(p)); + + if (char_count_cursor == byte_count_cursor + && char_count == byte_count) + vim_snprintf((char *)IObuff, IOSIZE, + _("Col %s of %s; Line %" PRId64 " of %" PRId64 "; Word %" PRId64 + " of %" PRId64 "; Byte %" PRId64 " of %" PRId64 ""), + (char *)buf1, (char *)buf2, + (int64_t)curwin->w_cursor.lnum, + (int64_t)curbuf->b_ml.ml_line_count, + (int64_t)word_count_cursor, (int64_t)word_count, + (int64_t)byte_count_cursor, (int64_t)byte_count); + else + vim_snprintf((char *)IObuff, IOSIZE, + _( + "Col %s of %s; Line %" PRId64 " of %" PRId64 "; Word %" PRId64 + " of %" PRId64 "; Char %" PRId64 " of %" PRId64 + "; Byte %" PRId64 " of %" PRId64 ""), + (char *)buf1, (char *)buf2, + (int64_t)curwin->w_cursor.lnum, + (int64_t)curbuf->b_ml.ml_line_count, + (int64_t)word_count_cursor, (int64_t)word_count, + (int64_t)char_count_cursor, (int64_t)char_count, + (int64_t)byte_count_cursor, (int64_t)byte_count); + } + + byte_count = bomb_size(); + if (byte_count > 0) + sprintf((char *)IObuff + STRLEN(IObuff), _("(+%" PRId64 " for BOM)"), + (int64_t)byte_count); + /* Don't shorten this message, the user asked for it. */ + p = p_shm; + p_shm = (char_u *)""; + msg(IObuff); + p_shm = p; + } +} + |