// This is an open source non-commercial project. Dear PVS-Studio, please check // it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com /* * misc1.c: functions that didn't seem to fit elsewhere */ #include #include #include #include #include #include "nvim/vim.h" #include "nvim/ascii.h" #include "nvim/misc1.h" #include "nvim/charset.h" #include "nvim/cursor.h" #include "nvim/diff.h" #include "nvim/edit.h" #include "nvim/eval.h" #include "nvim/ex_cmds.h" #include "nvim/ex_docmd.h" #include "nvim/ex_getln.h" #include "nvim/fileio.h" #include "nvim/func_attr.h" #include "nvim/fold.h" #include "nvim/getchar.h" #include "nvim/indent.h" #include "nvim/indent_c.h" #include "nvim/buffer_updates.h" #include "nvim/main.h" #include "nvim/mark.h" #include "nvim/mbyte.h" #include "nvim/memline.h" #include "nvim/memory.h" #include "nvim/message.h" #include "nvim/garray.h" #include "nvim/move.h" #include "nvim/mouse.h" #include "nvim/option.h" #include "nvim/os_unix.h" #include "nvim/quickfix.h" #include "nvim/regexp.h" #include "nvim/screen.h" #include "nvim/search.h" #include "nvim/state.h" #include "nvim/strings.h" #include "nvim/tag.h" #include "nvim/ui.h" #include "nvim/undo.h" #include "nvim/window.h" #include "nvim/os/os.h" #include "nvim/os/shell.h" #include "nvim/os/signal.h" #include "nvim/os/input.h" #include "nvim/os/time.h" #include "nvim/event/stream.h" #include "nvim/buffer.h" #ifdef INCLUDE_GENERATED_DECLARATIONS # include "misc1.c.generated.h" #endif /* All user names (for ~user completion as done by shell). */ static garray_T ga_users = GA_EMPTY_INIT_VALUE; /* * open_line: Add a new line below or above the current line. * * For VREPLACE mode, we only add a new line when we get to the end of the * file, otherwise we just start replacing the next line. * * Caller must take care of undo. Since VREPLACE may affect any number of * lines however, it may call u_save_cursor() again when starting to change a * new line. * "flags": OPENLINE_DELSPACES delete spaces after cursor * OPENLINE_DO_COM format comments * OPENLINE_KEEPTRAIL keep trailing spaces * OPENLINE_MARKFIX adjust mark positions after the line break * OPENLINE_COM_LIST format comments with list or 2nd line indent * * "second_line_indent": indent for after ^^D in Insert mode or if flag * OPENLINE_COM_LIST * * Return TRUE for success, FALSE for failure */ int open_line ( int dir, /* FORWARD or BACKWARD */ int flags, int second_line_indent ) { char_u *next_line = NULL; // copy of the next line char_u *p_extra = NULL; // what goes to next line colnr_T less_cols = 0; // less columns for mark in new line colnr_T less_cols_off = 0; // columns to skip for mark adjust pos_T old_cursor; // old cursor position colnr_T newcol = 0; // new cursor column int newindent = 0; // auto-indent of the new line bool trunc_line = false; // truncate current line afterwards bool retval = false; // return value int extra_len = 0; // length of p_extra string int lead_len; // length of comment leader char_u *lead_flags; // position in 'comments' for comment leader char_u *leader = NULL; // copy of comment leader char_u *allocated = NULL; // allocated memory char_u *p; char_u saved_char = NUL; // init for GCC pos_T *pos; bool do_si = (!p_paste && curbuf->b_p_si && !curbuf->b_p_cin && *curbuf->b_p_inde == NUL); bool no_si = false; // reset did_si afterwards int first_char = NUL; // init for GCC int vreplace_mode; bool did_append; // appended a new line int saved_pi = curbuf->b_p_pi; // copy of preserveindent setting // make a copy of the current line so we can mess with it char_u *saved_line = vim_strsave(get_cursor_line_ptr()); if (State & VREPLACE_FLAG) { /* * With VREPLACE we make a copy of the next line, which we will be * starting to replace. First make the new line empty and let vim play * with the indenting and comment leader to its heart's content. Then * we grab what it ended up putting on the new line, put back the * original line, and call ins_char() to put each new character onto * the line, replacing what was there before and pushing the right * stuff onto the replace stack. -- webb. */ if (curwin->w_cursor.lnum < orig_line_count) next_line = vim_strsave(ml_get(curwin->w_cursor.lnum + 1)); else next_line = vim_strsave((char_u *)""); /* * In VREPLACE mode, a NL replaces the rest of the line, and starts * replacing the next line, so push all of the characters left on the * line onto the replace stack. We'll push any other characters that * might be replaced at the start of the next line (due to autoindent * etc) a bit later. */ replace_push(NUL); /* Call twice because BS over NL expects it */ replace_push(NUL); p = saved_line + curwin->w_cursor.col; while (*p != NUL) { if (has_mbyte) p += replace_push_mb(p); else replace_push(*p++); } saved_line[curwin->w_cursor.col] = NUL; } if ((State & INSERT) && !(State & VREPLACE_FLAG) ) { p_extra = saved_line + curwin->w_cursor.col; if (do_si) { /* need first char after new line break */ p = skipwhite(p_extra); first_char = *p; } extra_len = (int)STRLEN(p_extra); saved_char = *p_extra; *p_extra = NUL; } u_clearline(); // cannot do "U" command when adding lines did_si = false; ai_col = 0; /* * If we just did an auto-indent, then we didn't type anything on * the prior line, and it should be truncated. Do this even if 'ai' is not * set because automatically inserting a comment leader also sets did_ai. */ if (dir == FORWARD && did_ai) trunc_line = TRUE; /* * If 'autoindent' and/or 'smartindent' is set, try to figure out what * indent to use for the new line. */ if (curbuf->b_p_ai || do_si ) { // count white space on current line newindent = get_indent_str(saved_line, (int)curbuf->b_p_ts, false); if (newindent == 0 && !(flags & OPENLINE_COM_LIST)) { newindent = second_line_indent; // for ^^D command in insert mode } /* * Do smart indenting. * In insert/replace mode (only when dir == FORWARD) * we may move some text to the next line. If it starts with '{' * don't add an indent. Fixes inserting a NL before '{' in line * "if (condition) {" */ if (!trunc_line && do_si && *saved_line != NUL && (p_extra == NULL || first_char != '{')) { char_u *ptr; char_u last_char; pos_T old_cursor = curwin->w_cursor; ptr = saved_line; if (flags & OPENLINE_DO_COM) lead_len = get_leader_len(ptr, NULL, FALSE, TRUE); else lead_len = 0; if (dir == FORWARD) { // Skip preprocessor directives, unless they are // recognised as comments. if (lead_len == 0 && ptr[0] == '#') { while (ptr[0] == '#' && curwin->w_cursor.lnum > 1) { ptr = ml_get(--curwin->w_cursor.lnum); } newindent = get_indent(); } if (flags & OPENLINE_DO_COM) lead_len = get_leader_len(ptr, NULL, FALSE, TRUE); else lead_len = 0; if (lead_len > 0) { /* * This case gets the following right: * \* * * A comment (read '\' as '/'). * *\ * #define IN_THE_WAY * This should line up here; */ p = skipwhite(ptr); if (p[0] == '/' && p[1] == '*') p++; if (p[0] == '*') { for (p++; *p; p++) { if (p[0] == '/' && p[-1] == '*') { /* * End of C comment, indent should line up * with the line containing the start of * the comment */ curwin->w_cursor.col = (colnr_T)(p - ptr); if ((pos = findmatch(NULL, NUL)) != NULL) { curwin->w_cursor.lnum = pos->lnum; newindent = get_indent(); } } } } } else { /* Not a comment line */ /* Find last non-blank in line */ p = ptr + STRLEN(ptr) - 1; while (p > ptr && ascii_iswhite(*p)) --p; last_char = *p; /* * find the character just before the '{' or ';' */ if (last_char == '{' || last_char == ';') { if (p > ptr) --p; while (p > ptr && ascii_iswhite(*p)) --p; } /* * Try to catch lines that are split over multiple * lines. eg: * if (condition && * condition) { * Should line up here! * } */ if (*p == ')') { curwin->w_cursor.col = (colnr_T)(p - ptr); if ((pos = findmatch(NULL, '(')) != NULL) { curwin->w_cursor.lnum = pos->lnum; newindent = get_indent(); ptr = get_cursor_line_ptr(); } } /* * If last character is '{' do indent, without * checking for "if" and the like. */ if (last_char == '{') { did_si = true; // do indent no_si = true; // don't delete it when '{' typed } /* * Look for "if" and the like, use 'cinwords'. * Don't do this if the previous line ended in ';' or * '}'. */ else if (last_char != ';' && last_char != '}' && cin_is_cinword(ptr)) did_si = true; } } else { // dir == BACKWARD // Skip preprocessor directives, unless they are // recognised as comments. if (lead_len == 0 && ptr[0] == '#') { bool was_backslashed = false; while ((ptr[0] == '#' || was_backslashed) && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) { if (*ptr && ptr[STRLEN(ptr) - 1] == '\\') { was_backslashed = true; } else { was_backslashed = false; } ptr = ml_get(++curwin->w_cursor.lnum); } if (was_backslashed) { newindent = 0; // Got to end of file } else { newindent = get_indent(); } } p = skipwhite(ptr); if (*p == '}') { // if line starts with '}': do indent did_si = true; } else { // can delete indent when '{' typed can_si_back = true; } } curwin->w_cursor = old_cursor; } if (do_si) { can_si = true; } did_ai = true; } /* * Find out if the current line starts with a comment leader. * This may then be inserted in front of the new line. */ end_comment_pending = NUL; if (flags & OPENLINE_DO_COM) lead_len = get_leader_len(saved_line, &lead_flags, dir == BACKWARD, TRUE); else lead_len = 0; if (lead_len > 0) { char_u *lead_repl = NULL; /* replaces comment leader */ int lead_repl_len = 0; /* length of *lead_repl */ char_u lead_middle[COM_MAX_LEN]; /* middle-comment string */ char_u lead_end[COM_MAX_LEN]; /* end-comment string */ char_u *comment_end = NULL; /* where lead_end has been found */ int extra_space = FALSE; /* append extra space */ int current_flag; int require_blank = FALSE; /* requires blank after middle */ char_u *p2; /* * If the comment leader has the start, middle or end flag, it may not * be used or may be replaced with the middle leader. */ for (p = lead_flags; *p && *p != ':'; ++p) { if (*p == COM_BLANK) { require_blank = TRUE; continue; } if (*p == COM_START || *p == COM_MIDDLE) { current_flag = *p; if (*p == COM_START) { /* * Doing "O" on a start of comment does not insert leader. */ if (dir == BACKWARD) { lead_len = 0; break; } /* find start of middle part */ (void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ","); require_blank = FALSE; } /* * Isolate the strings of the middle and end leader. */ while (*p && p[-1] != ':') { /* find end of middle flags */ if (*p == COM_BLANK) require_blank = TRUE; ++p; } (void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ","); while (*p && p[-1] != ':') { /* find end of end flags */ /* Check whether we allow automatic ending of comments */ if (*p == COM_AUTO_END) end_comment_pending = -1; /* means we want to set it */ ++p; } size_t n = copy_option_part(&p, lead_end, COM_MAX_LEN, ","); if (end_comment_pending == -1) /* we can set it now */ end_comment_pending = lead_end[n - 1]; /* * If the end of the comment is in the same line, don't use * the comment leader. */ if (dir == FORWARD) { for (p = saved_line + lead_len; *p; ++p) if (STRNCMP(p, lead_end, n) == 0) { comment_end = p; lead_len = 0; break; } } /* * Doing "o" on a start of comment inserts the middle leader. */ if (lead_len > 0) { if (current_flag == COM_START) { lead_repl = lead_middle; lead_repl_len = (int)STRLEN(lead_middle); } /* * If we have hit RETURN immediately after the start * comment leader, then put a space after the middle * comment leader on the next line. */ if (!ascii_iswhite(saved_line[lead_len - 1]) && ((p_extra != NULL && (int)curwin->w_cursor.col == lead_len) || (p_extra == NULL && saved_line[lead_len] == NUL) || require_blank)) extra_space = TRUE; } break; } if (*p == COM_END) { /* * Doing "o" on the end of a comment does not insert leader. * Remember where the end is, might want to use it to find the * start (for C-comments). */ if (dir == FORWARD) { comment_end = skipwhite(saved_line); lead_len = 0; break; } /* * Doing "O" on the end of a comment inserts the middle leader. * Find the string for the middle leader, searching backwards. */ while (p > curbuf->b_p_com && *p != ',') --p; for (lead_repl = p; lead_repl > curbuf->b_p_com && lead_repl[-1] != ':'; --lead_repl) ; lead_repl_len = (int)(p - lead_repl); /* We can probably always add an extra space when doing "O" on * the comment-end */ extra_space = TRUE; /* Check whether we allow automatic ending of comments */ for (p2 = p; *p2 && *p2 != ':'; p2++) { if (*p2 == COM_AUTO_END) end_comment_pending = -1; /* means we want to set it */ } if (end_comment_pending == -1) { /* Find last character in end-comment string */ while (*p2 && *p2 != ',') p2++; end_comment_pending = p2[-1]; } break; } if (*p == COM_FIRST) { /* * Comment leader for first line only: Don't repeat leader * when using "O", blank out leader when using "o". */ if (dir == BACKWARD) lead_len = 0; else { lead_repl = (char_u *)""; lead_repl_len = 0; } break; } } if (lead_len > 0) { // allocate buffer (may concatenate p_extra later) leader = xmalloc((size_t)(lead_len + lead_repl_len + extra_space + extra_len + (second_line_indent > 0 ? second_line_indent : 0) + 1)); allocated = leader; // remember to free it later STRLCPY(leader, saved_line, lead_len + 1); /* * Replace leader with lead_repl, right or left adjusted */ if (lead_repl != NULL) { int c = 0; int off = 0; for (p = lead_flags; *p != NUL && *p != ':'; ) { if (*p == COM_RIGHT || *p == COM_LEFT) c = *p++; else if (ascii_isdigit(*p) || *p == '-') off = getdigits_int(&p); else ++p; } if (c == COM_RIGHT) { /* right adjusted leader */ /* find last non-white in the leader to line up with */ for (p = leader + lead_len - 1; p > leader && ascii_iswhite(*p); --p) ; ++p; /* Compute the length of the replaced characters in * screen characters, not bytes. */ { int repl_size = vim_strnsize(lead_repl, lead_repl_len); int old_size = 0; char_u *endp = p; int l; while (old_size < repl_size && p > leader) { MB_PTR_BACK(leader, p); old_size += ptr2cells(p); } l = lead_repl_len - (int)(endp - p); if (l != 0) memmove(endp + l, endp, (size_t)((leader + lead_len) - endp)); lead_len += l; } memmove(p, lead_repl, (size_t)lead_repl_len); if (p + lead_repl_len > leader + lead_len) p[lead_repl_len] = NUL; /* blank-out any other chars from the old leader. */ while (--p >= leader) { int l = utf_head_off(leader, p); if (l > 1) { p -= l; if (ptr2cells(p) > 1) { p[1] = ' '; --l; } memmove(p + 1, p + l + 1, (size_t)((leader + lead_len) - (p + l + 1))); lead_len -= l; *p = ' '; } else if (!ascii_iswhite(*p)) *p = ' '; } } else { /* left adjusted leader */ p = skipwhite(leader); /* Compute the length of the replaced characters in * screen characters, not bytes. Move the part that is * not to be overwritten. */ { int repl_size = vim_strnsize(lead_repl, lead_repl_len); int i; int l; for (i = 0; i < lead_len && p[i] != NUL; i += l) { l = (*mb_ptr2len)(p + i); if (vim_strnsize(p, i + l) > repl_size) break; } if (i != lead_repl_len) { memmove(p + lead_repl_len, p + i, (size_t)(lead_len - i - (p - leader))); lead_len += lead_repl_len - i; } } memmove(p, lead_repl, (size_t)lead_repl_len); /* Replace any remaining non-white chars in the old * leader by spaces. Keep Tabs, the indent must * remain the same. */ for (p += lead_repl_len; p < leader + lead_len; ++p) if (!ascii_iswhite(*p)) { /* Don't put a space before a TAB. */ if (p + 1 < leader + lead_len && p[1] == TAB) { lead_len--; memmove(p, p + 1, (size_t)(leader + lead_len - p)); } else { int l = (*mb_ptr2len)(p); if (l > 1) { if (ptr2cells(p) > 1) { /* Replace a double-wide char with * two spaces */ --l; *p++ = ' '; } memmove(p + 1, p + l, (size_t)(leader + lead_len - p)); lead_len -= l - 1; } *p = ' '; } } *p = NUL; } /* Recompute the indent, it may have changed. */ if (curbuf->b_p_ai || do_si ) newindent = get_indent_str(leader, (int)curbuf->b_p_ts, false); /* Add the indent offset */ if (newindent + off < 0) { off = -newindent; newindent = 0; } else newindent += off; /* Correct trailing spaces for the shift, so that * alignment remains equal. */ while (off > 0 && lead_len > 0 && leader[lead_len - 1] == ' ') { /* Don't do it when there is a tab before the space */ if (vim_strchr(skipwhite(leader), '\t') != NULL) break; --lead_len; --off; } /* If the leader ends in white space, don't add an * extra space */ if (lead_len > 0 && ascii_iswhite(leader[lead_len - 1])) extra_space = FALSE; leader[lead_len] = NUL; } if (extra_space) { leader[lead_len++] = ' '; leader[lead_len] = NUL; } newcol = lead_len; /* * if a new indent will be set below, remove the indent that * is in the comment leader */ if (newindent || did_si ) { while (lead_len && ascii_iswhite(*leader)) { --lead_len; --newcol; ++leader; } } did_si = can_si = false; } else if (comment_end != NULL) { // We have finished a comment, so we don't use the leader. // If this was a C-comment and 'ai' or 'si' is set do a normal // indent to align with the line containing the start of the // comment. if (comment_end[0] == '*' && comment_end[1] == '/' && (curbuf->b_p_ai || do_si)) { old_cursor = curwin->w_cursor; curwin->w_cursor.col = (colnr_T)(comment_end - saved_line); if ((pos = findmatch(NULL, NUL)) != NULL) { curwin->w_cursor.lnum = pos->lnum; newindent = get_indent(); } curwin->w_cursor = old_cursor; } } } /* (State == INSERT || State == REPLACE), only when dir == FORWARD */ if (p_extra != NULL) { *p_extra = saved_char; /* restore char that NUL replaced */ /* * When 'ai' set or "flags" has OPENLINE_DELSPACES, skip to the first * non-blank. * * When in REPLACE mode, put the deleted blanks on the replace stack, * preceded by a NUL, so they can be put back when a BS is entered. */ if (REPLACE_NORMAL(State)) replace_push(NUL); /* end of extra blanks */ if (curbuf->b_p_ai || (flags & OPENLINE_DELSPACES)) { while ((*p_extra == ' ' || *p_extra == '\t') && !utf_iscomposing(utf_ptr2char(p_extra + 1))) { if (REPLACE_NORMAL(State)) { replace_push(*p_extra); } p_extra++; less_cols_off++; } } if (*p_extra != NUL) { did_ai = false; // append some text, don't truncate now } /* columns for marks adjusted for removed columns */ less_cols = (int)(p_extra - saved_line); } if (p_extra == NULL) p_extra = (char_u *)""; /* append empty line */ /* concatenate leader and p_extra, if there is a leader */ if (lead_len > 0) { if (flags & OPENLINE_COM_LIST && second_line_indent > 0) { int i; int padding = second_line_indent - (newindent + (int)STRLEN(leader)); /* Here whitespace is inserted after the comment char. * Below, set_indent(newindent, SIN_INSERT) will insert the * whitespace needed before the comment char. */ for (i = 0; i < padding; i++) { STRCAT(leader, " "); less_cols--; newcol++; } } STRCAT(leader, p_extra); p_extra = leader; did_ai = true; // So truncating blanks works with comments less_cols -= lead_len; } else end_comment_pending = NUL; /* turns out there was no leader */ old_cursor = curwin->w_cursor; if (dir == BACKWARD) --curwin->w_cursor.lnum; if (!(State & VREPLACE_FLAG) || old_cursor.lnum >= orig_line_count) { if (ml_append(curwin->w_cursor.lnum, p_extra, (colnr_T)0, FALSE) == FAIL) goto theend; // Postpone calling changed_lines(), because it would mess up folding // with markers. // Skip mark_adjust when adding a line after the last one, there can't // be marks there. But still needed in diff mode. if (curwin->w_cursor.lnum + 1 < curbuf->b_ml.ml_line_count || curwin->w_p_diff) { mark_adjust(curwin->w_cursor.lnum + 1, (linenr_T)MAXLNUM, 1L, 0L, false); } did_append = true; } else { /* * In VREPLACE mode we are starting to replace the next line. */ curwin->w_cursor.lnum++; if (curwin->w_cursor.lnum >= Insstart.lnum + vr_lines_changed) { /* In case we NL to a new line, BS to the previous one, and NL * again, we don't want to save the new line for undo twice. */ (void)u_save_cursor(); /* errors are ignored! */ vr_lines_changed++; } ml_replace(curwin->w_cursor.lnum, p_extra, true); changed_bytes(curwin->w_cursor.lnum, 0); curwin->w_cursor.lnum--; did_append = FALSE; } if (newindent || did_si ) { ++curwin->w_cursor.lnum; if (did_si) { int sw = get_sw_value(curbuf); if (p_sr) newindent -= newindent % sw; newindent += sw; } /* Copy the indent */ if (curbuf->b_p_ci) { (void)copy_indent(newindent, saved_line); /* * Set the 'preserveindent' option so that any further screwing * with the line doesn't entirely destroy our efforts to preserve * it. It gets restored at the function end. */ curbuf->b_p_pi = TRUE; } else (void)set_indent(newindent, SIN_INSERT); less_cols -= curwin->w_cursor.col; ai_col = curwin->w_cursor.col; /* * In REPLACE mode, for each character in the new indent, there must * be a NUL on the replace stack, for when it is deleted with BS */ if (REPLACE_NORMAL(State)) { for (colnr_T n = 0; n < curwin->w_cursor.col; n++) { replace_push(NUL); } } newcol += curwin->w_cursor.col; if (no_si) { did_si = false; } } /* * In REPLACE mode, for each character in the extra leader, there must be * a NUL on the replace stack, for when it is deleted with BS. */ if (REPLACE_NORMAL(State)) while (lead_len-- > 0) replace_push(NUL); curwin->w_cursor = old_cursor; if (dir == FORWARD) { if (trunc_line || (State & INSERT)) { // truncate current line at cursor saved_line[curwin->w_cursor.col] = NUL; // Remove trailing white space, unless OPENLINE_KEEPTRAIL used. if (trunc_line && !(flags & OPENLINE_KEEPTRAIL)) { truncate_spaces(saved_line); } ml_replace(curwin->w_cursor.lnum, saved_line, false); saved_line = NULL; if (did_append) { changed_lines(curwin->w_cursor.lnum, curwin->w_cursor.col, curwin->w_cursor.lnum + 1, 1L, true); did_append = false; /* Move marks after the line break to the new line. */ if (flags & OPENLINE_MARKFIX) mark_col_adjust(curwin->w_cursor.lnum, curwin->w_cursor.col + less_cols_off, 1L, (long)-less_cols); } else changed_bytes(curwin->w_cursor.lnum, curwin->w_cursor.col); } /* * Put the cursor on the new line. Careful: the scrollup() above may * have moved w_cursor, we must use old_cursor. */ curwin->w_cursor.lnum = old_cursor.lnum + 1; } if (did_append) { changed_lines(curwin->w_cursor.lnum, 0, curwin->w_cursor.lnum, 1L, true); } curwin->w_cursor.col = newcol; curwin->w_cursor.coladd = 0; /* * In VREPLACE mode, we are handling the replace stack ourselves, so stop * fixthisline() from doing it (via change_indent()) by telling it we're in * normal INSERT mode. */ if (State & VREPLACE_FLAG) { vreplace_mode = State; /* So we know to put things right later */ State = INSERT; } else vreplace_mode = 0; /* * May do lisp indenting. */ if (!p_paste && leader == NULL && curbuf->b_p_lisp && curbuf->b_p_ai) { fixthisline(get_lisp_indent); ai_col = (colnr_T)getwhitecols_curline(); } /* * May do indenting after opening a new line. */ if (!p_paste && (curbuf->b_p_cin || *curbuf->b_p_inde != NUL ) && in_cinkeys(dir == FORWARD ? KEY_OPEN_FORW : KEY_OPEN_BACK, ' ', linewhite(curwin->w_cursor.lnum))) { do_c_expr_indent(); ai_col = (colnr_T)getwhitecols_curline(); } if (vreplace_mode != 0) State = vreplace_mode; /* * Finally, VREPLACE gets the stuff on the new line, then puts back the * original line, and inserts the new stuff char by char, pushing old stuff * onto the replace stack (via ins_char()). */ if (State & VREPLACE_FLAG) { /* Put new line in p_extra */ p_extra = vim_strsave(get_cursor_line_ptr()); // Put back original line ml_replace(curwin->w_cursor.lnum, next_line, false); /* Insert new stuff into line again */ curwin->w_cursor.col = 0; curwin->w_cursor.coladd = 0; ins_bytes(p_extra); /* will call changed_bytes() */ xfree(p_extra); next_line = NULL; } retval = true; // success! theend: curbuf->b_p_pi = saved_pi; xfree(saved_line); xfree(next_line); xfree(allocated); return retval; } /* * get_leader_len() returns the length in bytes of the prefix of the given * string which introduces a comment. If this string is not a comment then * 0 is returned. * When "flags" is not NULL, it is set to point to the flags of the recognized * comment leader. * "backward" must be true for the "O" command. * If "include_space" is set, include trailing whitespace while calculating the * length. */ int get_leader_len(char_u *line, char_u **flags, int backward, int include_space) { int i, j; int result; int got_com = FALSE; int found_one; char_u part_buf[COM_MAX_LEN]; /* buffer for one option part */ char_u *string; /* pointer to comment string */ char_u *list; int middle_match_len = 0; char_u *prev_list; char_u *saved_flags = NULL; result = i = 0; while (ascii_iswhite(line[i])) /* leading white space is ignored */ ++i; /* * Repeat to match several nested comment strings. */ while (line[i] != NUL) { /* * scan through the 'comments' option for a match */ found_one = FALSE; for (list = curbuf->b_p_com; *list; ) { /* Get one option part into part_buf[]. Advance "list" to next * one. Put "string" at start of string. */ if (!got_com && flags != NULL) *flags = list; /* remember where flags started */ prev_list = list; (void)copy_option_part(&list, part_buf, COM_MAX_LEN, ","); string = vim_strchr(part_buf, ':'); if (string == NULL) /* missing ':', ignore this part */ continue; *string++ = NUL; /* isolate flags from string */ /* If we found a middle match previously, use that match when this * is not a middle or end. */ if (middle_match_len != 0 && vim_strchr(part_buf, COM_MIDDLE) == NULL && vim_strchr(part_buf, COM_END) == NULL) break; /* When we already found a nested comment, only accept further * nested comments. */ if (got_com && vim_strchr(part_buf, COM_NEST) == NULL) continue; /* When 'O' flag present and using "O" command skip this one. */ if (backward && vim_strchr(part_buf, COM_NOBACK) != NULL) continue; /* Line contents and string must match. * When string starts with white space, must have some white space * (but the amount does not need to match, there might be a mix of * TABs and spaces). */ if (ascii_iswhite(string[0])) { if (i == 0 || !ascii_iswhite(line[i - 1])) continue; /* missing white space */ while (ascii_iswhite(string[0])) ++string; } for (j = 0; string[j] != NUL && string[j] == line[i + j]; ++j) ; if (string[j] != NUL) continue; /* string doesn't match */ /* When 'b' flag used, there must be white space or an * end-of-line after the string in the line. */ if (vim_strchr(part_buf, COM_BLANK) != NULL && !ascii_iswhite(line[i + j]) && line[i + j] != NUL) continue; /* We have found a match, stop searching unless this is a middle * comment. The middle comment can be a substring of the end * comment in which case it's better to return the length of the * end comment and its flags. Thus we keep searching with middle * and end matches and use an end match if it matches better. */ if (vim_strchr(part_buf, COM_MIDDLE) != NULL) { if (middle_match_len == 0) { middle_match_len = j; saved_flags = prev_list; } continue; } if (middle_match_len != 0 && j > middle_match_len) /* Use this match instead of the middle match, since it's a * longer thus better match. */ middle_match_len = 0; if (middle_match_len == 0) i += j; found_one = TRUE; break; } if (middle_match_len != 0) { /* Use the previously found middle match after failing to find a * match with an end. */ if (!got_com && flags != NULL) *flags = saved_flags; i += middle_match_len; found_one = TRUE; } /* No match found, stop scanning. */ if (!found_one) break; result = i; /* Include any trailing white space. */ while (ascii_iswhite(line[i])) ++i; if (include_space) result = i; /* If this comment doesn't nest, stop here. */ got_com = TRUE; if (vim_strchr(part_buf, COM_NEST) == NULL) break; } return result; } /* * Return the offset at which the last comment in line starts. If there is no * comment in the whole line, -1 is returned. * * When "flags" is not null, it is set to point to the flags describing the * recognized comment leader. */ int get_last_leader_offset(char_u *line, char_u **flags) { int result = -1; int i, j; int lower_check_bound = 0; char_u *string; char_u *com_leader; char_u *com_flags; char_u *list; int found_one; char_u part_buf[COM_MAX_LEN]; /* buffer for one option part */ /* * Repeat to match several nested comment strings. */ i = (int)STRLEN(line); while (--i >= lower_check_bound) { /* * scan through the 'comments' option for a match */ found_one = FALSE; for (list = curbuf->b_p_com; *list; ) { char_u *flags_save = list; /* * Get one option part into part_buf[]. Advance list to next one. * put string at start of string. */ (void)copy_option_part(&list, part_buf, COM_MAX_LEN, ","); string = vim_strchr(part_buf, ':'); if (string == NULL) { /* If everything is fine, this cannot actually * happen. */ continue; } *string++ = NUL; /* Isolate flags from string. */ com_leader = string; /* * Line contents and string must match. * When string starts with white space, must have some white space * (but the amount does not need to match, there might be a mix of * TABs and spaces). */ if (ascii_iswhite(string[0])) { if (i == 0 || !ascii_iswhite(line[i - 1])) continue; while (ascii_iswhite(*string)) { string++; } } for (j = 0; string[j] != NUL && string[j] == line[i + j]; ++j) /* do nothing */; if (string[j] != NUL) continue; /* * When 'b' flag used, there must be white space or an * end-of-line after the string in the line. */ if (vim_strchr(part_buf, COM_BLANK) != NULL && !ascii_iswhite(line[i + j]) && line[i + j] != NUL) { continue; } if (vim_strchr(part_buf, COM_MIDDLE) != NULL) { // For a middlepart comment, only consider it to match if // everything before the current position in the line is // whitespace. Otherwise we would think we are inside a // comment if the middle part appears somewhere in the middle // of the line. E.g. for C the "*" appears often. for (j = 0; ascii_iswhite(line[j]) && j <= i; j++) { } if (j < i) { continue; } } /* * We have found a match, stop searching. */ found_one = TRUE; if (flags) *flags = flags_save; com_flags = flags_save; break; } if (found_one) { char_u part_buf2[COM_MAX_LEN]; /* buffer for one option part */ int len1, len2, off; result = i; /* * If this comment nests, continue searching. */ if (vim_strchr(part_buf, COM_NEST) != NULL) continue; lower_check_bound = i; /* Let's verify whether the comment leader found is a substring * of other comment leaders. If it is, let's adjust the * lower_check_bound so that we make sure that we have determined * the comment leader correctly. */ while (ascii_iswhite(*com_leader)) ++com_leader; len1 = (int)STRLEN(com_leader); for (list = curbuf->b_p_com; *list; ) { char_u *flags_save = list; (void)copy_option_part(&list, part_buf2, COM_MAX_LEN, ","); if (flags_save == com_flags) continue; string = vim_strchr(part_buf2, ':'); ++string; while (ascii_iswhite(*string)) ++string; len2 = (int)STRLEN(string); if (len2 == 0) continue; /* Now we have to verify whether string ends with a substring * beginning the com_leader. */ for (off = (len2 > i ? i : len2); off > 0 && off + len1 > len2; ) { --off; if (!STRNCMP(string + off, com_leader, len2 - off)) { if (i - off < lower_check_bound) lower_check_bound = i - off; } } } } } return result; } /* * Return the number of window lines occupied by buffer line "lnum". */ int plines(const linenr_T lnum) { return plines_win(curwin, lnum, true); } int plines_win( win_T *const wp, const linenr_T lnum, const bool winheight // when true limit to window height ) { /* Check for filler lines above this buffer line. When folded the result * is one line anyway. */ return plines_win_nofill(wp, lnum, winheight) + diff_check_fill(wp, lnum); } int plines_nofill(const linenr_T lnum) { return plines_win_nofill(curwin, lnum, true); } int plines_win_nofill( win_T *const wp, const linenr_T lnum, const bool winheight // when true limit to window height ) { if (!wp->w_p_wrap) { return 1; } if (wp->w_width == 0) { return 1; } // A folded lines is handled just like an empty line. if (lineFolded(wp, lnum)) { return 1; } const int lines = plines_win_nofold(wp, lnum); if (winheight && lines > wp->w_height) { return wp->w_height; } return lines; } /* * Return number of window lines physical line "lnum" will occupy in window * "wp". Does not care about folding, 'wrap' or 'diff'. */ int plines_win_nofold(win_T *wp, linenr_T lnum) { char_u *s; unsigned int col; int width; s = ml_get_buf(wp->w_buffer, lnum, FALSE); if (*s == NUL) /* empty line */ return 1; col = win_linetabsize(wp, s, (colnr_T)MAXCOL); /* * If list mode is on, then the '$' at the end of the line may take up one * extra column. */ if (wp->w_p_list && lcs_eol != NUL) col += 1; /* * Add column offset for 'number', 'relativenumber' and 'foldcolumn'. */ width = wp->w_width - win_col_off(wp); if (width <= 0 || col > 32000) { return 32000; // bigger than the number of screen columns } if (col <= (unsigned int)width) { return 1; } col -= (unsigned int)width; width += win_col_off2(wp); assert(col <= INT_MAX && (int)col < INT_MAX - (width -1)); return ((int)col + (width - 1)) / width + 1; } /* * Like plines_win(), but only reports the number of physical screen lines * used from the start of the line to the given column number. */ int plines_win_col(win_T *wp, linenr_T lnum, long column) { // Check for filler lines above this buffer line. When folded the result // is one line anyway. int lines = diff_check_fill(wp, lnum); if (!wp->w_p_wrap) return lines + 1; if (wp->w_width == 0) return lines + 1; char_u *line = ml_get_buf(wp->w_buffer, lnum, false); char_u *s = line; colnr_T col = 0; while (*s != NUL && --column >= 0) { col += win_lbr_chartabsize(wp, line, s, col, NULL); MB_PTR_ADV(s); } // If *s is a TAB, and the TAB is not displayed as ^I, and we're not in // INSERT mode, then col must be adjusted so that it represents the last // screen position of the TAB. This only fixes an error when the TAB wraps // from one screen line to the next (when 'columns' is not a multiple of // 'ts') -- webb. if (*s == TAB && (State & NORMAL) && (!wp->w_p_list || lcs_tab1)) { col += win_lbr_chartabsize(wp, line, s, col, NULL) - 1; } // Add column offset for 'number', 'relativenumber', 'foldcolumn', etc. int width = wp->w_width - win_col_off(wp); if (width <= 0) { return 9999; } lines += 1; if (col > width) lines += (col - width) / (width + win_col_off2(wp)) + 1; return lines; } int plines_m_win(win_T *wp, linenr_T first, linenr_T last) { int count = 0; while (first <= last) { // Check if there are any really folded lines, but also included lines // that are maybe folded. linenr_T x = foldedCount(wp, first, NULL); if (x > 0) { ++count; /* count 1 for "+-- folded" line */ first += x; } else { if (first == wp->w_topline) { count += plines_win_nofill(wp, first, true) + wp->w_topfill; } else { count += plines_win(wp, first, true); } first++; } } return count; } /* * Insert string "p" at the cursor position. Stops at a NUL byte. * Handles Replace mode and multi-byte characters. */ void ins_bytes(char_u *p) { ins_bytes_len(p, STRLEN(p)); } /// Insert string "p" with length "len" at the cursor position. /// Handles Replace mode and multi-byte characters. void ins_bytes_len(char_u *p, size_t len) { if (has_mbyte) { size_t n; for (size_t i = 0; i < len; i += n) { if (enc_utf8) { // avoid reading past p[len] n = (size_t)utfc_ptr2len_len(p + i, (int)(len - i)); } else { n = (size_t)(*mb_ptr2len)(p + i); } ins_char_bytes(p + i, n); } } else { for (size_t i = 0; i < len; i++) { ins_char(p[i]); } } } /// Insert or replace a single character at the cursor position. /// When in REPLACE or VREPLACE mode, replace any existing character. /// Caller must have prepared for undo. /// For multi-byte characters we get the whole character, the caller must /// convert bytes to a character. void ins_char(int c) { char_u buf[MB_MAXBYTES + 1]; size_t n = (size_t)utf_char2bytes(c, buf); // When "c" is 0x100, 0x200, etc. we don't want to insert a NUL byte. // Happens for CTRL-Vu9900. if (buf[0] == 0) { buf[0] = '\n'; } ins_char_bytes(buf, n); } void ins_char_bytes(char_u *buf, size_t charlen) { // Break tabs if needed. if (virtual_active() && curwin->w_cursor.coladd > 0) { coladvance_force(getviscol()); } size_t col = (size_t)curwin->w_cursor.col; linenr_T lnum = curwin->w_cursor.lnum; char_u *oldp = ml_get(lnum); size_t linelen = STRLEN(oldp) + 1; // length of old line including NUL // The lengths default to the values for when not replacing. size_t oldlen = 0; // nr of bytes inserted size_t newlen = charlen; // nr of bytes deleted (0 when not replacing) if (State & REPLACE_FLAG) { if (State & VREPLACE_FLAG) { // Disable 'list' temporarily, unless 'cpo' contains the 'L' flag. // Returns the old value of list, so when finished, // curwin->w_p_list should be set back to this. int old_list = curwin->w_p_list; if (old_list && vim_strchr(p_cpo, CPO_LISTWM) == NULL) { curwin->w_p_list = false; } // In virtual replace mode each character may replace one or more // characters (zero if it's a TAB). Count the number of bytes to // be deleted to make room for the new character, counting screen // cells. May result in adding spaces to fill a gap. colnr_T vcol; getvcol(curwin, &curwin->w_cursor, NULL, &vcol, NULL); colnr_T new_vcol = vcol + chartabsize(buf, vcol); while (oldp[col + oldlen] != NUL && vcol < new_vcol) { vcol += chartabsize(oldp + col + oldlen, vcol); // Don't need to remove a TAB that takes us to the right // position. if (vcol > new_vcol && oldp[col + oldlen] == TAB) { break; } oldlen += (size_t)(*mb_ptr2len)(oldp + col + oldlen); // Deleted a bit too much, insert spaces. if (vcol > new_vcol) { newlen += (size_t)(vcol - new_vcol); } } curwin->w_p_list = old_list; } else if (oldp[col] != NUL) { // normal replace oldlen = (size_t)(*mb_ptr2len)(oldp + col); } /* Push the replaced bytes onto the replace stack, so that they can be * put back when BS is used. The bytes of a multi-byte character are * done the other way around, so that the first byte is popped off * first (it tells the byte length of the character). */ replace_push(NUL); for (size_t i = 0; i < oldlen; i++) { if (has_mbyte) { i += (size_t)replace_push_mb(oldp + col + i) - 1; } else { replace_push(oldp[col + i]); } } } char_u *newp = xmalloc((size_t)(linelen + newlen - oldlen)); // Copy bytes before the cursor. if (col > 0) { memmove(newp, oldp, (size_t)col); } // Copy bytes after the changed character(s). char_u *p = newp + col; if (linelen > col + oldlen) { memmove(p + newlen, oldp + col + oldlen, (size_t)(linelen - col - oldlen)); } // Insert or overwrite the new character. memmove(p, buf, charlen); // Fill with spaces when necessary. for (size_t i = charlen; i < newlen; i++) { p[i] = ' '; } // Replace the line in the buffer. ml_replace(lnum, newp, false); // mark the buffer as changed and prepare for displaying changed_bytes(lnum, (colnr_T)col); /* * If we're in Insert or Replace mode and 'showmatch' is set, then briefly * show the match for right parens and braces. */ if (p_sm && (State & INSERT) && msg_silent == 0 && !ins_compl_active() ) { showmatch(utf_ptr2char(buf)); } if (!p_ri || (State & REPLACE_FLAG)) { // Normal insert: move cursor right curwin->w_cursor.col += (int)charlen; } /* * TODO: should try to update w_row here, to avoid recomputing it later. */ } /* * Insert a string at the cursor position. * Note: Does NOT handle Replace mode. * Caller must have prepared for undo. */ void ins_str(char_u *s) { char_u *oldp, *newp; int newlen = (int)STRLEN(s); int oldlen; colnr_T col; linenr_T lnum = curwin->w_cursor.lnum; if (virtual_active() && curwin->w_cursor.coladd > 0) coladvance_force(getviscol()); col = curwin->w_cursor.col; oldp = ml_get(lnum); oldlen = (int)STRLEN(oldp); newp = (char_u *) xmalloc((size_t)(oldlen + newlen + 1)); if (col > 0) memmove(newp, oldp, (size_t)col); memmove(newp + col, s, (size_t)newlen); memmove(newp + col + newlen, oldp + col, (size_t)(oldlen - col + 1)); ml_replace(lnum, newp, false); changed_bytes(lnum, col); curwin->w_cursor.col += newlen; } // Delete one character under the cursor. // If "fixpos" is true, don't leave the cursor on the NUL after the line. // Caller must have prepared for undo. // // return FAIL for failure, OK otherwise int del_char(bool fixpos) { if (has_mbyte) { /* Make sure the cursor is at the start of a character. */ mb_adjust_cursor(); if (*get_cursor_pos_ptr() == NUL) return FAIL; return del_chars(1L, fixpos); } return del_bytes(1, fixpos, true); } /* * Like del_bytes(), but delete characters instead of bytes. */ int del_chars(long count, int fixpos) { int bytes = 0; long i; char_u *p; int l; p = get_cursor_pos_ptr(); for (i = 0; i < count && *p != NUL; ++i) { l = (*mb_ptr2len)(p); bytes += l; p += l; } return del_bytes(bytes, fixpos, TRUE); } /// Delete "count" bytes under the cursor. /// If "fixpos" is true, don't leave the cursor on the NUL after the line. /// Caller must have prepared for undo. /// /// @param count number of bytes to be deleted /// @param fixpos_arg leave the cursor on the NUL after the line /// @param use_delcombine 'delcombine' option applies /// /// @return FAIL for failure, OK otherwise int del_bytes(colnr_T count, bool fixpos_arg, bool use_delcombine) { linenr_T lnum = curwin->w_cursor.lnum; colnr_T col = curwin->w_cursor.col; bool fixpos = fixpos_arg; char_u *oldp = ml_get(lnum); colnr_T oldlen = (colnr_T)STRLEN(oldp); // Can't do anything when the cursor is on the NUL after the line. if (col >= oldlen) { return FAIL; } // If "count" is zero there is nothing to do. if (count == 0) { return OK; } // If "count" is negative the caller must be doing something wrong. if (count < 1) { IEMSGN("E950: Invalid count for del_bytes(): %ld", count); return FAIL; } /* If 'delcombine' is set and deleting (less than) one character, only * delete the last combining character. */ if (p_deco && use_delcombine && enc_utf8 && utfc_ptr2len(oldp + col) >= count) { int cc[MAX_MCO]; int n; (void)utfc_ptr2char(oldp + col, cc); if (cc[0] != NUL) { /* Find the last composing char, there can be several. */ n = col; do { col = n; count = utf_ptr2len(oldp + n); n += count; } while (UTF_COMPOSINGLIKE(oldp + col, oldp + n)); fixpos = false; } } // When count is too big, reduce it. int movelen = oldlen - col - count + 1; // includes trailing NUL if (movelen <= 1) { /* * If we just took off the last character of a non-blank line, and * fixpos is TRUE, we don't want to end up positioned at the NUL, * unless "restart_edit" is set or 'virtualedit' contains "onemore". */ if (col > 0 && fixpos && restart_edit == 0 && (ve_flags & VE_ONEMORE) == 0 ) { --curwin->w_cursor.col; curwin->w_cursor.coladd = 0; curwin->w_cursor.col -= utf_head_off(oldp, oldp + curwin->w_cursor.col); } count = oldlen - col; movelen = 1; } // If the old line has been allocated the deletion can be done in the // existing line. Otherwise a new line has to be allocated. bool was_alloced = ml_line_alloced(); // check if oldp was allocated char_u *newp; if (was_alloced) { newp = oldp; // use same allocated memory } else { // need to allocate a new line newp = xmalloc((size_t)(oldlen + 1 - count)); memmove(newp, oldp, (size_t)col); } memmove(newp + col, oldp + col + count, (size_t)movelen); if (!was_alloced) { ml_replace(lnum, newp, false); } /* mark the buffer as changed and prepare for displaying */ changed_bytes(lnum, curwin->w_cursor.col); return OK; } /* * Delete from cursor to end of line. * Caller must have prepared for undo. */ void truncate_line ( int fixpos /* if TRUE fix the cursor position when done */ ) { char_u *newp; linenr_T lnum = curwin->w_cursor.lnum; colnr_T col = curwin->w_cursor.col; if (col == 0) { newp = vim_strsave((char_u *)""); } else { newp = vim_strnsave(ml_get(lnum), (size_t)col); } ml_replace(lnum, newp, false); /* mark the buffer as changed and prepare for displaying */ changed_bytes(lnum, curwin->w_cursor.col); /* * If "fixpos" is TRUE we don't want to end up positioned at the NUL. */ if (fixpos && curwin->w_cursor.col > 0) --curwin->w_cursor.col; } /* * Delete "nlines" lines at the cursor. * Saves the lines for undo first if "undo" is TRUE. */ void del_lines ( long nlines, /* number of lines to delete */ int undo /* if TRUE, prepare for undo */ ) { long n; linenr_T first = curwin->w_cursor.lnum; if (nlines <= 0) return; /* save the deleted lines for undo */ if (undo && u_savedel(first, nlines) == FAIL) return; for (n = 0; n < nlines; ) { if (curbuf->b_ml.ml_flags & ML_EMPTY) /* nothing to delete */ break; ml_delete(first, TRUE); ++n; /* If we delete the last line in the file, stop */ if (first > curbuf->b_ml.ml_line_count) break; } /* Correct the cursor position before calling deleted_lines_mark(), it may * trigger a callback to display the cursor. */ curwin->w_cursor.col = 0; check_cursor_lnum(); /* adjust marks, mark the buffer as changed and prepare for displaying */ deleted_lines_mark(first, n); } int gchar_pos(pos_T *pos) { // When searching columns is sometimes put at the end of a line. if (pos->col == MAXCOL) { return NUL; } return utf_ptr2char(ml_get_pos(pos)); } /* * Call this function when something in the current buffer is changed. * * Most often called through changed_bytes() and changed_lines(), which also * mark the area of the display to be redrawn. * * Careful: may trigger autocommands that reload the buffer. */ void changed(void) { if (!curbuf->b_changed) { int save_msg_scroll = msg_scroll; /* Give a warning about changing a read-only file. This may also * check-out the file, thus change "curbuf"! */ change_warning(0); /* Create a swap file if that is wanted. * Don't do this for "nofile" and "nowrite" buffer types. */ if (curbuf->b_may_swap && !bt_dontwrite(curbuf) ) { int save_need_wait_return = need_wait_return; need_wait_return = false; ml_open_file(curbuf); /* The ml_open_file() can cause an ATTENTION message. * Wait two seconds, to make sure the user reads this unexpected * message. Since we could be anywhere, call wait_return() now, * and don't let the emsg() set msg_scroll. */ if (need_wait_return && emsg_silent == 0) { ui_flush(); os_delay(2000L, true); wait_return(TRUE); msg_scroll = save_msg_scroll; } else { need_wait_return = save_need_wait_return; } } changed_int(); } buf_inc_changedtick(curbuf); } /* * Internal part of changed(), no user interaction. */ void changed_int(void) { curbuf->b_changed = true; ml_setflags(curbuf); check_status(curbuf); redraw_tabline = TRUE; need_maketitle = TRUE; /* set window title later */ } /* * Changed bytes within a single line for the current buffer. * - marks the windows on this buffer to be redisplayed * - marks the buffer changed by calling changed() * - invalidates cached values * Careful: may trigger autocommands that reload the buffer. */ void changed_bytes(linenr_T lnum, colnr_T col) { changedOneline(curbuf, lnum); changed_common(lnum, col, lnum + 1, 0L); // notify any channels that are watching if (kv_size(curbuf->update_channels)) { buf_updates_send_changes(curbuf, lnum, 1, 1, true); } /* Diff highlighting in other diff windows may need to be updated too. */ if (curwin->w_p_diff) { linenr_T wlnum; FOR_ALL_WINDOWS_IN_TAB(wp, curtab) { if (wp->w_p_diff && wp != curwin) { redraw_win_later(wp, VALID); wlnum = diff_lnum_win(lnum, wp); if (wlnum > 0) changedOneline(wp->w_buffer, wlnum); } } } } static void changedOneline(buf_T *buf, linenr_T lnum) { if (buf->b_mod_set) { /* find the maximum area that must be redisplayed */ if (lnum < buf->b_mod_top) buf->b_mod_top = lnum; else if (lnum >= buf->b_mod_bot) buf->b_mod_bot = lnum + 1; } else { /* set the area that must be redisplayed to one line */ buf->b_mod_set = true; buf->b_mod_top = lnum; buf->b_mod_bot = lnum + 1; buf->b_mod_xlines = 0; } } /* * Appended "count" lines below line "lnum" in the current buffer. * Must be called AFTER the change and after mark_adjust(). * Takes care of marking the buffer to be redrawn and sets the changed flag. */ void appended_lines(linenr_T lnum, long count) { changed_lines(lnum + 1, 0, lnum + 1, count, true); } /* * Like appended_lines(), but adjust marks first. */ void appended_lines_mark(linenr_T lnum, long count) { // Skip mark_adjust when adding a line after the last one, there can't // be marks there. But it's still needed in diff mode. if (lnum + count < curbuf->b_ml.ml_line_count || curwin->w_p_diff) { mark_adjust(lnum + 1, (linenr_T)MAXLNUM, count, 0L, false); } changed_lines(lnum + 1, 0, lnum + 1, count, true); } /* * Deleted "count" lines at line "lnum" in the current buffer. * Must be called AFTER the change and after mark_adjust(). * Takes care of marking the buffer to be redrawn and sets the changed flag. */ void deleted_lines(linenr_T lnum, long count) { changed_lines(lnum, 0, lnum + count, -count, true); } /* * Like deleted_lines(), but adjust marks first. * Make sure the cursor is on a valid line before calling, a GUI callback may * be triggered to display the cursor. */ void deleted_lines_mark(linenr_T lnum, long count) { mark_adjust(lnum, (linenr_T)(lnum + count - 1), (long)MAXLNUM, -count, false); changed_lines(lnum, 0, lnum + count, -count, true); } /* * Changed lines for the current buffer. * Must be called AFTER the change and after mark_adjust(). * - mark the buffer changed by calling changed() * - mark the windows on this buffer to be redisplayed * - invalidate cached values * "lnum" is the first line that needs displaying, "lnume" the first line * below the changed lines (BEFORE the change). * When only inserting lines, "lnum" and "lnume" are equal. * Takes care of calling changed() and updating b_mod_*. * Careful: may trigger autocommands that reload the buffer. */ void changed_lines( linenr_T lnum, // first line with change colnr_T col, // column in first line with change linenr_T lnume, // line below last changed line long xtra, // number of extra lines (negative when deleting) bool do_buf_event // some callers like undo/redo call changed_lines() // and then increment changedtick *again*. This flag // allows these callers to send the nvim_buf_lines_event // events after they're done modifying changedtick. ) { changed_lines_buf(curbuf, lnum, lnume, xtra); if (xtra == 0 && curwin->w_p_diff && !diff_internal()) { // When the number of lines doesn't change then mark_adjust() isn't // called and other diff buffers still need to be marked for // displaying. linenr_T wlnum; FOR_ALL_WINDOWS_IN_TAB(wp, curtab) { if (wp->w_p_diff && wp != curwin) { redraw_win_later(wp, VALID); wlnum = diff_lnum_win(lnum, wp); if (wlnum > 0) { changed_lines_buf(wp->w_buffer, wlnum, lnume - lnum + wlnum, 0L); } } } } changed_common(lnum, col, lnume, xtra); if (do_buf_event && kv_size(curbuf->update_channels)) { int64_t num_added = (int64_t)(lnume + xtra - lnum); int64_t num_removed = lnume - lnum; buf_updates_send_changes(curbuf, lnum, num_added, num_removed, true); } } /// Mark line range in buffer as changed. /// /// @param buf the buffer where lines were changed /// @param lnum first line with change /// @param lnume line below last changed line /// @param xtra number of extra lines (negative when deleting) void changed_lines_buf(buf_T *buf, linenr_T lnum, linenr_T lnume, long xtra) { if (buf->b_mod_set) { /* find the maximum area that must be redisplayed */ if (lnum < buf->b_mod_top) buf->b_mod_top = lnum; if (lnum < buf->b_mod_bot) { /* adjust old bot position for xtra lines */ buf->b_mod_bot += xtra; if (buf->b_mod_bot < lnum) buf->b_mod_bot = lnum; } if (lnume + xtra > buf->b_mod_bot) buf->b_mod_bot = lnume + xtra; buf->b_mod_xlines += xtra; } else { /* set the area that must be redisplayed */ buf->b_mod_set = true; buf->b_mod_top = lnum; buf->b_mod_bot = lnume + xtra; buf->b_mod_xlines = xtra; } } /* * Common code for when a change is was made. * See changed_lines() for the arguments. * Careful: may trigger autocommands that reload the buffer. */ static void changed_common(linenr_T lnum, colnr_T col, linenr_T lnume, long xtra) { int i; int cols; pos_T *p; int add; /* mark the buffer as modified */ changed(); if (curwin->w_p_diff && diff_internal()) { curtab->tp_diff_update = true; } /* set the '. mark */ if (!cmdmod.keepjumps) { RESET_FMARK(&curbuf->b_last_change, ((pos_T) {lnum, col, 0}), 0); /* Create a new entry if a new undo-able change was started or we * don't have an entry yet. */ if (curbuf->b_new_change || curbuf->b_changelistlen == 0) { if (curbuf->b_changelistlen == 0) add = TRUE; else { /* Don't create a new entry when the line number is the same * as the last one and the column is not too far away. Avoids * creating many entries for typing "xxxxx". */ p = &curbuf->b_changelist[curbuf->b_changelistlen - 1].mark; if (p->lnum != lnum) add = TRUE; else { cols = comp_textwidth(FALSE); if (cols == 0) cols = 79; add = (p->col + cols < col || col + cols < p->col); } } if (add) { /* This is the first of a new sequence of undo-able changes * and it's at some distance of the last change. Use a new * position in the changelist. */ curbuf->b_new_change = false; if (curbuf->b_changelistlen == JUMPLISTSIZE) { /* changelist is full: remove oldest entry */ curbuf->b_changelistlen = JUMPLISTSIZE - 1; memmove(curbuf->b_changelist, curbuf->b_changelist + 1, sizeof(curbuf->b_changelist[0]) * (JUMPLISTSIZE - 1)); FOR_ALL_TAB_WINDOWS(tp, wp) { /* Correct position in changelist for other windows on * this buffer. */ if (wp->w_buffer == curbuf && wp->w_changelistidx > 0) { --wp->w_changelistidx; } } } FOR_ALL_TAB_WINDOWS(tp, wp) { /* For other windows, if the position in the changelist is * at the end it stays at the end. */ if (wp->w_buffer == curbuf && wp->w_changelistidx == curbuf->b_changelistlen) { ++wp->w_changelistidx; } } ++curbuf->b_changelistlen; } } curbuf->b_changelist[curbuf->b_changelistlen - 1] = curbuf->b_last_change; /* The current window is always after the last change, so that "g," * takes you back to it. */ curwin->w_changelistidx = curbuf->b_changelistlen; } FOR_ALL_TAB_WINDOWS(tp, wp) { if (wp->w_buffer == curbuf) { /* Mark this window to be redrawn later. */ if (wp->w_redr_type < VALID) wp->w_redr_type = VALID; /* Check if a change in the buffer has invalidated the cached * values for the cursor. */ /* * Update the folds for this window. Can't postpone this, because * a following operator might work on the whole fold: ">>dd". */ foldUpdate(wp, lnum, lnume + xtra - 1); /* The change may cause lines above or below the change to become * included in a fold. Set lnum/lnume to the first/last line that * might be displayed differently. * Set w_cline_folded here as an efficient way to update it when * inserting lines just above a closed fold. */ bool folded = hasFoldingWin(wp, lnum, &lnum, NULL, false, NULL); if (wp->w_cursor.lnum == lnum) wp->w_cline_folded = folded; folded = hasFoldingWin(wp, lnume, NULL, &lnume, false, NULL); if (wp->w_cursor.lnum == lnume) wp->w_cline_folded = folded; /* If the changed line is in a range of previously folded lines, * compare with the first line in that range. */ if (wp->w_cursor.lnum <= lnum) { i = find_wl_entry(wp, lnum); if (i >= 0 && wp->w_cursor.lnum > wp->w_lines[i].wl_lnum) changed_line_abv_curs_win(wp); } if (wp->w_cursor.lnum > lnum) changed_line_abv_curs_win(wp); else if (wp->w_cursor.lnum == lnum && wp->w_cursor.col >= col) changed_cline_bef_curs_win(wp); if (wp->w_botline >= lnum) { /* Assume that botline doesn't change (inserted lines make * other lines scroll down below botline). */ approximate_botline_win(wp); } /* Check if any w_lines[] entries have become invalid. * For entries below the change: Correct the lnums for * inserted/deleted lines. Makes it possible to stop displaying * after the change. */ for (i = 0; i < wp->w_lines_valid; ++i) if (wp->w_lines[i].wl_valid) { if (wp->w_lines[i].wl_lnum >= lnum) { if (wp->w_lines[i].wl_lnum < lnume) { /* line included in change */ wp->w_lines[i].wl_valid = FALSE; } else if (xtra != 0) { /* line below change */ wp->w_lines[i].wl_lnum += xtra; wp->w_lines[i].wl_lastlnum += xtra; } } else if (wp->w_lines[i].wl_lastlnum >= lnum) { /* change somewhere inside this range of folded lines, * may need to be redrawn */ wp->w_lines[i].wl_valid = FALSE; } } /* Take care of side effects for setting w_topline when folds have * changed. Esp. when the buffer was changed in another window. */ if (hasAnyFolding(wp)) set_topline(wp, wp->w_topline); // relative numbering may require updating more if (wp->w_p_rnu) { redraw_win_later(wp, SOME_VALID); } } } /* Call update_screen() later, which checks out what needs to be redrawn, * since it notices b_mod_set and then uses b_mod_*. */ if (must_redraw < VALID) must_redraw = VALID; /* when the cursor line is changed always trigger CursorMoved */ if (lnum <= curwin->w_cursor.lnum && lnume + (xtra < 0 ? -xtra : xtra) > curwin->w_cursor.lnum) last_cursormoved.lnum = 0; } /* * unchanged() is called when the changed flag must be reset for buffer 'buf' */ void unchanged ( buf_T *buf, int ff /* also reset 'fileformat' */ ) { if (buf->b_changed || (ff && file_ff_differs(buf, false))) { buf->b_changed = false; ml_setflags(buf); if (ff) save_file_ff(buf); check_status(buf); redraw_tabline = TRUE; need_maketitle = TRUE; /* set window title later */ } buf_inc_changedtick(buf); } /* * check_status: called when the status bars for the buffer 'buf' * need to be updated */ void check_status(buf_T *buf) { FOR_ALL_WINDOWS_IN_TAB(wp, curtab) { if (wp->w_buffer == buf && wp->w_status_height) { wp->w_redr_status = TRUE; if (must_redraw < VALID) { must_redraw = VALID; } } } } /* * If the file is readonly, give a warning message with the first change. * Don't do this for autocommands. * Don't use emsg(), because it flushes the macro buffer. * If we have undone all changes b_changed will be false, but "b_did_warn" * will be true. * Careful: may trigger autocommands that reload the buffer. */ void change_warning ( int col /* column for message; non-zero when in insert mode and 'showmode' is on */ ) { static char *w_readonly = N_("W10: Warning: Changing a readonly file"); if (curbuf->b_did_warn == false && curbufIsChanged() == 0 && !autocmd_busy && curbuf->b_p_ro) { ++curbuf_lock; apply_autocmds(EVENT_FILECHANGEDRO, NULL, NULL, FALSE, curbuf); --curbuf_lock; if (!curbuf->b_p_ro) return; /* * Do what msg() does, but with a column offset if the warning should * be after the mode message. */ msg_start(); if (msg_row == Rows - 1) msg_col = col; msg_source(HL_ATTR(HLF_W)); MSG_PUTS_ATTR(_(w_readonly), HL_ATTR(HLF_W) | MSG_HIST); set_vim_var_string(VV_WARNINGMSG, _(w_readonly), -1); msg_clr_eos(); (void)msg_end(); if (msg_silent == 0 && !silent_mode && ui_active()) { ui_flush(); os_delay(1000L, true); /* give the user time to think about it */ } curbuf->b_did_warn = true; redraw_cmdline = FALSE; /* don't redraw and erase the message */ if (msg_row < Rows - 1) showmode(); } } /// Ask for a reply from the user, 'y' or 'n' /// /// No other characters are accepted, the message is repeated until a valid /// reply is entered or is hit. /// /// @param[in] str Prompt: question to ask user. Is always followed by /// " (y/n)?". /// @param[in] direct Determines what function to use to get user input. If /// true then ui_inchar() will be used, otherwise vgetc(). /// I.e. when direct is true then characters are obtained /// directly from the user without buffers involved. /// /// @return 'y' or 'n'. Last is also what will be returned in case of interrupt. int ask_yesno(const char *const str, const bool direct) { const int save_State = State; no_wait_return++; State = CONFIRM; // Mouse behaves like with :confirm. setmouse(); // Disable mouse in xterm. no_mapping++; int r = ' '; while (r != 'y' && r != 'n') { // Same highlighting as for wait_return. smsg_attr(HL_ATTR(HLF_R), "%s (y/n)?", str); if (direct) { r = get_keystroke(); } else { r = plain_vgetc(); } if (r == Ctrl_C || r == ESC) { r = 'n'; } msg_putchar(r); // Show what you typed. ui_flush(); } no_wait_return--; State = save_State; setmouse(); no_mapping--; return r; } /* * Return TRUE if "c" is a mouse key. */ int is_mouse_key(int c) { return c == K_LEFTMOUSE || c == K_LEFTMOUSE_NM || c == K_LEFTDRAG || c == K_LEFTRELEASE || c == K_LEFTRELEASE_NM || c == K_MIDDLEMOUSE || c == K_MIDDLEDRAG || c == K_MIDDLERELEASE || c == K_RIGHTMOUSE || c == K_RIGHTDRAG || c == K_RIGHTRELEASE || c == K_MOUSEDOWN || c == K_MOUSEUP || c == K_MOUSELEFT || c == K_MOUSERIGHT || c == K_X1MOUSE || c == K_X1DRAG || c == K_X1RELEASE || c == K_X2MOUSE || c == K_X2DRAG || c == K_X2RELEASE; } /* * Get a key stroke directly from the user. * Ignores mouse clicks and scrollbar events, except a click for the left * button (used at the more prompt). * Doesn't use vgetc(), because it syncs undo and eats mapped characters. * Disadvantage: typeahead is ignored. * Translates the interrupt character for unix to ESC. */ int get_keystroke(void) { char_u *buf = NULL; int buflen = 150; int maxlen; int len = 0; int n; int save_mapped_ctrl_c = mapped_ctrl_c; int waited = 0; mapped_ctrl_c = 0; // mappings are not used here for (;; ) { // flush output before waiting ui_flush(); /* Leave some room for check_termcode() to insert a key code into (max * 5 chars plus NUL). And fix_input_buffer() can triple the number of * bytes. */ maxlen = (buflen - 6 - len) / 3; if (buf == NULL) { buf = xmalloc((size_t)buflen); } else if (maxlen < 10) { // Need some more space. This might happen when receiving a long // escape sequence. buflen += 100; buf = xrealloc(buf, (size_t)buflen); maxlen = (buflen - 6 - len) / 3; } /* First time: blocking wait. Second time: wait up to 100ms for a * terminal code to complete. */ n = os_inchar(buf + len, maxlen, len == 0 ? -1L : 100L, 0); if (n > 0) { // Replace zero and CSI by a special key code. n = fix_input_buffer(buf + len, n); len += n; waited = 0; } else if (len > 0) ++waited; /* keep track of the waiting time */ if (n == KEYLEN_REMOVED) { /* key code removed */ if (must_redraw != 0 && !need_wait_return && (State & CMDLINE) == 0) { /* Redrawing was postponed, do it now. */ update_screen(0); setcursor(); /* put cursor back where it belongs */ } continue; } if (n > 0) /* found a termcode: adjust length */ len = n; if (len == 0) /* nothing typed yet */ continue; /* Handle modifier and/or special key code. */ n = buf[0]; if (n == K_SPECIAL) { n = TO_SPECIAL(buf[1], buf[2]); if (buf[1] == KS_MODIFIER || n == K_IGNORE || (is_mouse_key(n) && n != K_LEFTMOUSE) ) { if (buf[1] == KS_MODIFIER) mod_mask = buf[2]; len -= 3; if (len > 0) memmove(buf, buf + 3, (size_t)len); continue; } break; } if (MB_BYTE2LEN(n) > len) { // more bytes to get. continue; } buf[len >= buflen ? buflen - 1 : len] = NUL; n = utf_ptr2char(buf); break; } xfree(buf); mapped_ctrl_c = save_mapped_ctrl_c; return n; } /* * Get a number from the user. * When "mouse_used" is not NULL allow using the mouse. */ int get_number ( int colon, /* allow colon to abort */ int *mouse_used ) { int n = 0; int c; int typed = 0; if (mouse_used != NULL) *mouse_used = FALSE; /* When not printing messages, the user won't know what to type, return a * zero (as if CR was hit). */ if (msg_silent != 0) return 0; no_mapping++; for (;; ) { ui_cursor_goto(msg_row, msg_col); c = safe_vgetc(); if (ascii_isdigit(c)) { n = n * 10 + c - '0'; msg_putchar(c); ++typed; } else if (c == K_DEL || c == K_KDEL || c == K_BS || c == Ctrl_H) { if (typed > 0) { MSG_PUTS("\b \b"); --typed; } n /= 10; } else if (mouse_used != NULL && c == K_LEFTMOUSE) { *mouse_used = TRUE; n = mouse_row + 1; break; } else if (n == 0 && c == ':' && colon) { stuffcharReadbuff(':'); if (!exmode_active) cmdline_row = msg_row; skip_redraw = TRUE; /* skip redraw once */ do_redraw = FALSE; break; } else if (c == CAR || c == NL || c == Ctrl_C || c == ESC) break; } no_mapping--; return n; } /* * Ask the user to enter a number. * When "mouse_used" is not NULL allow using the mouse and in that case return * the line number. */ int prompt_for_number(int *mouse_used) { int i; int save_cmdline_row; int save_State; /* When using ":silent" assume that was entered. */ if (mouse_used != NULL) MSG_PUTS(_("Type number and or click with mouse (empty cancels): ")); else MSG_PUTS(_("Type number and (empty cancels): ")); /* Set the state such that text can be selected/copied/pasted and we still * get mouse events. */ save_cmdline_row = cmdline_row; cmdline_row = 0; save_State = State; State = ASKMORE; // prevents a screen update when using a timer i = get_number(TRUE, mouse_used); if (KeyTyped) { /* don't call wait_return() now */ /* msg_putchar('\n'); */ cmdline_row = msg_row - 1; need_wait_return = FALSE; msg_didany = FALSE; msg_didout = FALSE; } else cmdline_row = save_cmdline_row; State = save_State; return i; } void msgmore(long n) { long pn; if (global_busy /* no messages now, wait until global is finished */ || !messaging()) /* 'lazyredraw' set, don't do messages now */ return; /* We don't want to overwrite another important message, but do overwrite * a previous "more lines" or "fewer lines" message, so that "5dd" and * then "put" reports the last action. */ if (keep_msg != NULL && !keep_msg_more) return; if (n > 0) pn = n; else pn = -n; if (pn > p_report) { if (pn == 1) { if (n > 0) STRLCPY(msg_buf, _("1 more line"), MSG_BUF_LEN); else STRLCPY(msg_buf, _("1 line less"), MSG_BUF_LEN); } else { if (n > 0) vim_snprintf((char *)msg_buf, MSG_BUF_LEN, _("%" PRId64 " more lines"), (int64_t)pn); else vim_snprintf((char *)msg_buf, MSG_BUF_LEN, _("%" PRId64 " fewer lines"), (int64_t)pn); } if (got_int) { xstrlcat((char *)msg_buf, _(" (Interrupted)"), MSG_BUF_LEN); } if (msg(msg_buf)) { set_keep_msg(msg_buf, 0); keep_msg_more = TRUE; } } } /* * flush map and typeahead buffers and give a warning for an error */ void beep_flush(void) { if (emsg_silent == 0) { flush_buffers(FLUSH_MINIMAL); vim_beep(BO_ERROR); } } // Give a warning for an error // val is one of the BO_ values, e.g., BO_OPER void vim_beep(unsigned val) { if (emsg_silent == 0) { if (!((bo_flags & val) || (bo_flags & BO_ALL))) { if (p_vb) { ui_call_visual_bell(); } else { ui_call_bell(); } } /* When 'verbose' is set and we are sourcing a script or executing a * function give the user a hint where the beep comes from. */ if (vim_strchr(p_debug, 'e') != NULL) { msg_source(HL_ATTR(HLF_W)); msg_attr(_("Beep!"), HL_ATTR(HLF_W)); } } } #if defined(EXITFREE) void free_users(void) { ga_clear_strings(&ga_users); } #endif /* * Find all user names for user completion. * Done only once and then cached. */ static void init_users(void) { static int lazy_init_done = FALSE; if (lazy_init_done) { return; } lazy_init_done = TRUE; os_get_usernames(&ga_users); } /* * Function given to ExpandGeneric() to obtain an user names. */ char_u *get_users(expand_T *xp, int idx) { init_users(); if (idx < ga_users.ga_len) return ((char_u **)ga_users.ga_data)[idx]; return NULL; } /* * Check whether name matches a user name. Return: * 0 if name does not match any user name. * 1 if name partially matches the beginning of a user name. * 2 is name fully matches a user name. */ int match_user(char_u *name) { int n = (int)STRLEN(name); int result = 0; init_users(); for (int i = 0; i < ga_users.ga_len; i++) { if (STRCMP(((char_u **)ga_users.ga_data)[i], name) == 0) return 2; /* full match */ if (STRNCMP(((char_u **)ga_users.ga_data)[i], name, n) == 0) result = 1; /* partial match */ } return result; } /// Preserve files and exit. /// @note IObuff must contain a message. /// @note This may be called from deadly_signal() in a signal handler, avoid /// unsafe functions, such as allocating memory. void preserve_exit(void) FUNC_ATTR_NORETURN { // 'true' when we are sure to exit, e.g., after a deadly signal static bool really_exiting = false; // Prevent repeated calls into this method. if (really_exiting) { if (input_global_fd() >= 0) { // normalize stream (#2598) stream_set_blocking(input_global_fd(), true); } exit(2); } really_exiting = true; // Ignore SIGHUP while we are already exiting. #9274 signal_reject_deadly(); mch_errmsg(IObuff); mch_errmsg("\n"); ui_flush(); ml_close_notmod(); // close all not-modified buffers FOR_ALL_BUFFERS(buf) { if (buf->b_ml.ml_mfp != NULL && buf->b_ml.ml_mfp->mf_fname != NULL) { mch_errmsg((uint8_t *)"Vim: preserving files...\n"); ui_flush(); ml_sync_all(false, false, true); // preserve all swap files break; } } ml_close_all(false); // close all memfiles, without deleting mch_errmsg("Vim: Finished.\n"); getout(1); } /* * Check for CTRL-C pressed, but only once in a while. * Should be used instead of os_breakcheck() for functions that check for * each line in the file. Calling os_breakcheck() each time takes too much * time, because it can be a system call. */ #ifndef BREAKCHECK_SKIP # define BREAKCHECK_SKIP 32 #endif static int breakcheck_count = 0; void line_breakcheck(void) { if (++breakcheck_count >= BREAKCHECK_SKIP) { breakcheck_count = 0; os_breakcheck(); } } /* * Like line_breakcheck() but check 10 times less often. */ void fast_breakcheck(void) { if (++breakcheck_count >= BREAKCHECK_SKIP * 10) { breakcheck_count = 0; os_breakcheck(); } } /// os_call_shell() wrapper. Handles 'verbose', :profile, and v:shell_error. /// Invalidates cached tags. /// /// @return shell command exit code int call_shell(char_u *cmd, ShellOpts opts, char_u *extra_shell_arg) { int retval; proftime_T wait_time; if (p_verbose > 3) { verbose_enter(); smsg(_("Executing command: \"%s\""), cmd == NULL ? p_sh : cmd); msg_putchar('\n'); verbose_leave(); } if (do_profiling == PROF_YES) { prof_child_enter(&wait_time); } if (*p_sh == NUL) { EMSG(_(e_shellempty)); retval = -1; } else { // The external command may update a tags file, clear cached tags. tag_freematch(); retval = os_call_shell(cmd, opts, extra_shell_arg); } set_vim_var_nr(VV_SHELL_ERROR, (varnumber_T)retval); if (do_profiling == PROF_YES) { prof_child_exit(&wait_time); } return retval; } /// Get the stdout of an external command. /// If "ret_len" is NULL replace NUL characters with NL. When "ret_len" is not /// NULL store the length there. /// /// @param cmd command to execute /// @param infile optional input file name /// @param flags can be kShellOptSilent or 0 /// @param ret_len length of the stdout /// /// @return an allocated string, or NULL for error. char_u *get_cmd_output(char_u *cmd, char_u *infile, ShellOpts flags, size_t *ret_len) { char_u *buffer = NULL; if (check_restricted() || check_secure()) return NULL; // get a name for the temp file char_u *tempname = vim_tempname(); if (tempname == NULL) { EMSG(_(e_notmp)); return NULL; } // Add the redirection stuff char_u *command = make_filter_cmd(cmd, infile, tempname); /* * Call the shell to execute the command (errors are ignored). * Don't check timestamps here. */ ++no_check_timestamps; call_shell(command, kShellOptDoOut | kShellOptExpand | flags, NULL); --no_check_timestamps; xfree(command); // read the names from the file into memory FILE *fd = mch_fopen((char *)tempname, READBIN); if (fd == NULL) { EMSG2(_(e_notopen), tempname); goto done; } fseek(fd, 0L, SEEK_END); size_t len = (size_t)ftell(fd); // get size of temp file fseek(fd, 0L, SEEK_SET); buffer = xmalloc(len + 1); size_t i = fread((char *)buffer, 1, len, fd); fclose(fd); os_remove((char *)tempname); if (i != len) { EMSG2(_(e_notread), tempname); xfree(buffer); buffer = NULL; } else if (ret_len == NULL) { /* Change NUL into SOH, otherwise the string is truncated. */ for (i = 0; i < len; ++i) if (buffer[i] == NUL) buffer[i] = 1; buffer[len] = NUL; /* make sure the buffer is terminated */ } else { *ret_len = len; } done: xfree(tempname); return buffer; } /* * Free the list of files returned by expand_wildcards() or other expansion * functions. */ void FreeWild(int count, char_u **files) { if (count <= 0 || files == NULL) return; while (count--) xfree(files[count]); xfree(files); } /* * Return TRUE when need to go to Insert mode because of 'insertmode'. * Don't do this when still processing a command or a mapping. * Don't do this when inside a ":normal" command. */ int goto_im(void) { return p_im && stuff_empty() && typebuf_typed(); }