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-rw-r--r--src/nvim/screen.c1115
1 files changed, 0 insertions, 1115 deletions
diff --git a/src/nvim/screen.c b/src/nvim/screen.c
deleted file mode 100644
index 2002f554d4..0000000000
--- a/src/nvim/screen.c
+++ /dev/null
@@ -1,1115 +0,0 @@
-// 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
-
-// screen.c: Lower level code for displaying on the screen.
-// grid.c contains some other lower-level code.
-
-// Output to the screen (console, terminal emulator or GUI window) is minimized
-// by remembering what is already on the screen, and only updating the parts
-// that changed.
-
-#include <assert.h>
-#include <inttypes.h>
-#include <limits.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "nvim/ascii.h"
-#include "nvim/buffer.h"
-#include "nvim/charset.h"
-#include "nvim/cursor.h"
-#include "nvim/eval.h"
-#include "nvim/fold.h"
-#include "nvim/getchar.h"
-#include "nvim/gettext.h"
-#include "nvim/globals.h"
-#include "nvim/grid.h"
-#include "nvim/grid_defs.h"
-#include "nvim/highlight.h"
-#include "nvim/mbyte.h"
-#include "nvim/memline_defs.h"
-#include "nvim/memory.h"
-#include "nvim/message.h"
-#include "nvim/move.h"
-#include "nvim/normal.h"
-#include "nvim/option.h"
-#include "nvim/os/os.h"
-#include "nvim/os/time.h"
-#include "nvim/pos.h"
-#include "nvim/profile.h"
-#include "nvim/regexp.h"
-#include "nvim/screen.h"
-#include "nvim/search.h"
-#include "nvim/state.h"
-#include "nvim/statusline.h"
-#include "nvim/strings.h"
-#include "nvim/types.h"
-#include "nvim/ui.h"
-#include "nvim/vim.h"
-#include "nvim/window.h"
-
-#ifdef INCLUDE_GENERATED_DECLARATIONS
-# include "screen.c.generated.h"
-#endif
-
-static char e_conflicts_with_value_of_listchars[] = N_("E834: Conflicts with value of 'listchars'");
-static char e_conflicts_with_value_of_fillchars[] = N_("E835: Conflicts with value of 'fillchars'");
-
-/// Return true if the cursor line in window "wp" may be concealed, according
-/// to the 'concealcursor' option.
-bool conceal_cursor_line(const win_T *wp)
- FUNC_ATTR_NONNULL_ALL
-{
- int c;
-
- if (*wp->w_p_cocu == NUL) {
- return false;
- }
- if (get_real_state() & MODE_VISUAL) {
- c = 'v';
- } else if (State & MODE_INSERT) {
- c = 'i';
- } else if (State & MODE_NORMAL) {
- c = 'n';
- } else if (State & MODE_CMDLINE) {
- c = 'c';
- } else {
- return false;
- }
- return vim_strchr(wp->w_p_cocu, c) != NULL;
-}
-
-/// Whether cursorline is drawn in a special way
-///
-/// If true, both old and new cursorline will need to be redrawn when moving cursor within windows.
-bool win_cursorline_standout(const win_T *wp)
- FUNC_ATTR_NONNULL_ALL
-{
- return wp->w_p_cul || (wp->w_p_cole > 0 && !conceal_cursor_line(wp));
-}
-
-/// Returns width of the signcolumn that should be used for the whole window
-///
-/// @param wp window we want signcolumn width from
-/// @return max width of signcolumn (cell unit)
-///
-/// @note Returns a constant for now but hopefully we can improve neovim so that
-/// the returned value width adapts to the maximum number of marks to draw
-/// for the window
-/// TODO(teto)
-int win_signcol_width(win_T *wp)
-{
- // 2 is vim default value
- return 2;
-}
-
-/// Call grid_fill() with columns adjusted for 'rightleft' if needed.
-/// Return the new offset.
-static int win_fill_end(win_T *wp, int c1, int c2, int off, int width, int row, int endrow,
- int attr)
-{
- int nn = off + width;
-
- if (nn > wp->w_grid.cols) {
- nn = wp->w_grid.cols;
- }
-
- if (wp->w_p_rl) {
- grid_fill(&wp->w_grid, row, endrow, W_ENDCOL(wp) - nn, W_ENDCOL(wp) - off,
- c1, c2, attr);
- } else {
- grid_fill(&wp->w_grid, row, endrow, off, nn, c1, c2, attr);
- }
-
- return nn;
-}
-
-/// Clear lines near the end of the window and mark the unused lines with "c1".
-/// Use "c2" as filler character.
-/// When "draw_margin" is true, then draw the sign/fold/number columns.
-void win_draw_end(win_T *wp, int c1, int c2, bool draw_margin, int row, int endrow, hlf_T hl)
-{
- assert(hl >= 0 && hl < HLF_COUNT);
- int n = 0;
-
- if (draw_margin) {
- // draw the fold column
- int fdc = compute_foldcolumn(wp, 0);
- if (fdc > 0) {
- n = win_fill_end(wp, ' ', ' ', n, fdc, row, endrow,
- win_hl_attr(wp, HLF_FC));
- }
- // draw the sign column
- int count = wp->w_scwidth;
- if (count > 0) {
- n = win_fill_end(wp, ' ', ' ', n, win_signcol_width(wp) * count, row,
- endrow, win_hl_attr(wp, HLF_SC));
- }
- // draw the number column
- if ((wp->w_p_nu || wp->w_p_rnu) && vim_strchr(p_cpo, CPO_NUMCOL) == NULL) {
- n = win_fill_end(wp, ' ', ' ', n, number_width(wp) + 1, row, endrow,
- win_hl_attr(wp, HLF_N));
- }
- }
-
- int attr = hl_combine_attr(win_bg_attr(wp), win_hl_attr(wp, (int)hl));
-
- if (wp->w_p_rl) {
- grid_fill(&wp->w_grid, row, endrow, wp->w_wincol, W_ENDCOL(wp) - 1 - n,
- c2, c2, attr);
- grid_fill(&wp->w_grid, row, endrow, W_ENDCOL(wp) - 1 - n, W_ENDCOL(wp) - n,
- c1, c2, attr);
- } else {
- grid_fill(&wp->w_grid, row, endrow, n, wp->w_grid.cols, c1, c2, attr);
- }
-}
-
-/// Compute the width of the foldcolumn. Based on 'foldcolumn' and how much
-/// space is available for window "wp", minus "col".
-int compute_foldcolumn(win_T *wp, int col)
-{
- int fdc = win_fdccol_count(wp);
- int wmw = wp == curwin && p_wmw == 0 ? 1 : (int)p_wmw;
- int wwidth = wp->w_grid.cols;
-
- if (fdc > wwidth - (col + wmw)) {
- fdc = wwidth - (col + wmw);
- }
- return fdc;
-}
-
-/// Fills the foldcolumn at "p" for window "wp".
-/// Only to be called when 'foldcolumn' > 0.
-///
-/// @param[out] p Char array to write into
-/// @param lnum Absolute current line number
-/// @param closed Whether it is in 'foldcolumn' mode
-///
-/// Assume monocell characters
-/// @return number of chars added to \param p
-size_t fill_foldcolumn(char *p, win_T *wp, foldinfo_T foldinfo, linenr_T lnum)
-{
- int i = 0;
- int level;
- int first_level;
- int fdc = compute_foldcolumn(wp, 0); // available cell width
- size_t char_counter = 0;
- int symbol = 0;
- int len = 0;
- bool closed = foldinfo.fi_lines > 0;
- // Init to all spaces.
- memset(p, ' ', MAX_MCO * (size_t)fdc + 1);
-
- level = foldinfo.fi_level;
-
- // If the column is too narrow, we start at the lowest level that
- // fits and use numbers to indicate the depth.
- first_level = level - fdc - closed + 1;
- if (first_level < 1) {
- first_level = 1;
- }
-
- for (i = 0; i < MIN(fdc, level); i++) {
- if (foldinfo.fi_lnum == lnum
- && first_level + i >= foldinfo.fi_low_level) {
- symbol = wp->w_p_fcs_chars.foldopen;
- } else if (first_level == 1) {
- symbol = wp->w_p_fcs_chars.foldsep;
- } else if (first_level + i <= 9) {
- symbol = '0' + first_level + i;
- } else {
- symbol = '>';
- }
-
- len = utf_char2bytes(symbol, &p[char_counter]);
- char_counter += (size_t)len;
- if (first_level + i >= level) {
- i++;
- break;
- }
- }
-
- if (closed) {
- if (symbol != 0) {
- // rollback previous write
- char_counter -= (size_t)len;
- memset(&p[char_counter], ' ', (size_t)len);
- }
- len = utf_char2bytes(wp->w_p_fcs_chars.foldclosed, &p[char_counter]);
- char_counter += (size_t)len;
- }
-
- return MAX(char_counter + (size_t)(fdc - i), (size_t)fdc);
-}
-
-/// Mirror text "str" for right-left displaying.
-/// Only works for single-byte characters (e.g., numbers).
-void rl_mirror(char *str)
-{
- char *p1, *p2;
- char t;
-
- for (p1 = str, p2 = str + strlen(str) - 1; p1 < p2; p1++, p2--) {
- t = *p1;
- *p1 = *p2;
- *p2 = t;
- }
-}
-
-/// Only call if (wp->w_vsep_width != 0).
-///
-/// @return true if the status line of window "wp" is connected to the status
-/// line of the window right of it. If not, then it's a vertical separator.
-bool stl_connected(win_T *wp)
-{
- frame_T *fr;
-
- fr = wp->w_frame;
- while (fr->fr_parent != NULL) {
- if (fr->fr_parent->fr_layout == FR_COL) {
- if (fr->fr_next != NULL) {
- break;
- }
- } else {
- if (fr->fr_next != NULL) {
- return true;
- }
- }
- fr = fr->fr_parent;
- }
- return false;
-}
-
-/// Get the value to show for the language mappings, active 'keymap'.
-///
-/// @param fmt format string containing one %s item
-/// @param buf buffer for the result
-/// @param len length of buffer
-bool get_keymap_str(win_T *wp, char *fmt, char *buf, int len)
-{
- char *p;
-
- if (wp->w_buffer->b_p_iminsert != B_IMODE_LMAP) {
- return false;
- }
-
- buf_T *old_curbuf = curbuf;
- win_T *old_curwin = curwin;
- char *s;
-
- curbuf = wp->w_buffer;
- curwin = wp;
- STRCPY(buf, "b:keymap_name"); // must be writable
- emsg_skip++;
- s = p = eval_to_string(buf, NULL, false);
- emsg_skip--;
- curbuf = old_curbuf;
- curwin = old_curwin;
- if (p == NULL || *p == NUL) {
- if (wp->w_buffer->b_kmap_state & KEYMAP_LOADED) {
- p = wp->w_buffer->b_p_keymap;
- } else {
- p = "lang";
- }
- }
- if (vim_snprintf(buf, (size_t)len, fmt, p) > len - 1) {
- buf[0] = NUL;
- }
- xfree(s);
- return buf[0] != NUL;
-}
-
-/// Prepare for 'hlsearch' highlighting.
-void start_search_hl(void)
-{
- if (!p_hls || no_hlsearch) {
- return;
- }
-
- end_search_hl(); // just in case it wasn't called before
- last_pat_prog(&screen_search_hl.rm);
- // Set the time limit to 'redrawtime'.
- screen_search_hl.tm = profile_setlimit(p_rdt);
-}
-
-/// Clean up for 'hlsearch' highlighting.
-void end_search_hl(void)
-{
- if (screen_search_hl.rm.regprog == NULL) {
- return;
- }
-
- vim_regfree(screen_search_hl.rm.regprog);
- screen_search_hl.rm.regprog = NULL;
-}
-
-/// Check if there should be a delay. Used before clearing or redrawing the
-/// screen or the command line.
-void check_for_delay(bool check_msg_scroll)
-{
- if ((emsg_on_display || (check_msg_scroll && msg_scroll))
- && !did_wait_return
- && emsg_silent == 0
- && !in_assert_fails) {
- ui_flush();
- os_delay(1006L, true);
- emsg_on_display = false;
- if (check_msg_scroll) {
- msg_scroll = false;
- }
- }
-}
-
-/// Set cursor to its position in the current window.
-void setcursor(void)
-{
- setcursor_mayforce(false);
-}
-
-/// Set cursor to its position in the current window.
-/// @param force when true, also when not redrawing.
-void setcursor_mayforce(bool force)
-{
- if (force || redrawing()) {
- validate_cursor();
-
- ScreenGrid *grid = &curwin->w_grid;
- int row = curwin->w_wrow;
- int col = curwin->w_wcol;
- if (curwin->w_p_rl) {
- // With 'rightleft' set and the cursor on a double-wide character,
- // position it on the leftmost column.
- col = curwin->w_width_inner - curwin->w_wcol
- - ((utf_ptr2cells(get_cursor_pos_ptr()) == 2
- && vim_isprintc(gchar_cursor())) ? 2 : 1);
- }
-
- grid_adjust(&grid, &row, &col);
- ui_grid_cursor_goto(grid->handle, row, col);
- }
-}
-
-/// Scroll `line_count` lines at 'row' in window 'wp'.
-///
-/// Positive `line_count` means scrolling down, so that more space is available
-/// at 'row'. Negative `line_count` implies deleting lines at `row`.
-void win_scroll_lines(win_T *wp, int row, int line_count)
-{
- if (!redrawing() || line_count == 0) {
- return;
- }
-
- // No lines are being moved, just draw over the entire area
- if (row + abs(line_count) >= wp->w_grid.rows) {
- return;
- }
-
- if (line_count < 0) {
- grid_del_lines(&wp->w_grid, row, -line_count,
- wp->w_grid.rows, 0, wp->w_grid.cols);
- } else {
- grid_ins_lines(&wp->w_grid, row, line_count,
- wp->w_grid.rows, 0, wp->w_grid.cols);
- }
-}
-
-/// @return true when postponing displaying the mode message: when not redrawing
-/// or inside a mapping.
-bool skip_showmode(void)
-{
- // Call char_avail() only when we are going to show something, because it
- // takes a bit of time. redrawing() may also call char_avail().
- if (global_busy || msg_silent != 0 || !redrawing() || (char_avail() && !KeyTyped)) {
- redraw_mode = true; // show mode later
- return true;
- }
- return false;
-}
-
-/// Show the current mode and ruler.
-///
-/// If clear_cmdline is true, clear the rest of the cmdline.
-/// If clear_cmdline is false there may be a message there that needs to be
-/// cleared only if a mode is shown.
-/// If redraw_mode is true show or clear the mode.
-/// @return the length of the message (0 if no message).
-int showmode(void)
-{
- bool need_clear;
- int length = 0;
- int do_mode;
- int attr;
- int sub_attr;
-
- if (ui_has(kUIMessages) && clear_cmdline) {
- msg_ext_clear(true);
- }
-
- // don't make non-flushed message part of the showmode
- msg_ext_ui_flush();
-
- msg_grid_validate();
-
- do_mode = ((p_smd && msg_silent == 0)
- && ((State & MODE_TERMINAL)
- || (State & MODE_INSERT)
- || restart_edit != NUL
- || VIsual_active));
- if (do_mode || reg_recording != 0) {
- if (skip_showmode()) {
- return 0; // show mode later
- }
-
- bool nwr_save = need_wait_return;
-
- // wait a bit before overwriting an important message
- check_for_delay(false);
-
- // if the cmdline is more than one line high, erase top lines
- need_clear = clear_cmdline;
- if (clear_cmdline && cmdline_row < Rows - 1) {
- msg_clr_cmdline(); // will reset clear_cmdline
- }
-
- // Position on the last line in the window, column 0
- msg_pos_mode();
- attr = HL_ATTR(HLF_CM); // Highlight mode
-
- // When the screen is too narrow to show the entire mode message,
- // avoid scrolling and truncate instead.
- msg_no_more = true;
- int save_lines_left = lines_left;
- lines_left = 0;
-
- if (do_mode) {
- msg_puts_attr("--", attr);
- // CTRL-X in Insert mode
- if (edit_submode != NULL && !shortmess(SHM_COMPLETIONMENU)) {
- // These messages can get long, avoid a wrap in a narrow window.
- // Prefer showing edit_submode_extra. With external messages there
- // is no imposed limit.
- if (ui_has(kUIMessages)) {
- length = INT_MAX;
- } else {
- length = (Rows - msg_row) * Columns - 3;
- }
- if (edit_submode_extra != NULL) {
- length -= vim_strsize(edit_submode_extra);
- }
- if (length > 0) {
- if (edit_submode_pre != NULL) {
- length -= vim_strsize(edit_submode_pre);
- }
- if (length - vim_strsize(edit_submode) > 0) {
- if (edit_submode_pre != NULL) {
- msg_puts_attr((const char *)edit_submode_pre, attr);
- }
- msg_puts_attr((const char *)edit_submode, attr);
- }
- if (edit_submode_extra != NULL) {
- msg_puts_attr(" ", attr); // Add a space in between.
- if ((int)edit_submode_highl < HLF_COUNT) {
- sub_attr = win_hl_attr(curwin, (int)edit_submode_highl);
- } else {
- sub_attr = attr;
- }
- msg_puts_attr((const char *)edit_submode_extra, sub_attr);
- }
- }
- } else {
- if (State & MODE_TERMINAL) {
- msg_puts_attr(_(" TERMINAL"), attr);
- } else if (State & VREPLACE_FLAG) {
- msg_puts_attr(_(" VREPLACE"), attr);
- } else if (State & REPLACE_FLAG) {
- msg_puts_attr(_(" REPLACE"), attr);
- } else if (State & MODE_INSERT) {
- if (p_ri) {
- msg_puts_attr(_(" REVERSE"), attr);
- }
- msg_puts_attr(_(" INSERT"), attr);
- } else if (restart_edit == 'I' || restart_edit == 'i'
- || restart_edit == 'a' || restart_edit == 'A') {
- if (curbuf->terminal) {
- msg_puts_attr(_(" (terminal)"), attr);
- } else {
- msg_puts_attr(_(" (insert)"), attr);
- }
- } else if (restart_edit == 'R') {
- msg_puts_attr(_(" (replace)"), attr);
- } else if (restart_edit == 'V') {
- msg_puts_attr(_(" (vreplace)"), attr);
- }
- if (p_hkmap) {
- msg_puts_attr(_(" Hebrew"), attr);
- }
- if (State & MODE_LANGMAP) {
- if (curwin->w_p_arab) {
- msg_puts_attr(_(" Arabic"), attr);
- } else if (get_keymap_str(curwin, " (%s)",
- NameBuff, MAXPATHL)) {
- msg_puts_attr(NameBuff, attr);
- }
- }
- if ((State & MODE_INSERT) && p_paste) {
- msg_puts_attr(_(" (paste)"), attr);
- }
-
- if (VIsual_active) {
- char *p;
-
- // Don't concatenate separate words to avoid translation
- // problems.
- switch ((VIsual_select ? 4 : 0)
- + (VIsual_mode == Ctrl_V) * 2
- + (VIsual_mode == 'V')) {
- case 0:
- p = N_(" VISUAL"); break;
- case 1:
- p = N_(" VISUAL LINE"); break;
- case 2:
- p = N_(" VISUAL BLOCK"); break;
- case 4:
- p = N_(" SELECT"); break;
- case 5:
- p = N_(" SELECT LINE"); break;
- default:
- p = N_(" SELECT BLOCK"); break;
- }
- msg_puts_attr(_(p), attr);
- }
- msg_puts_attr(" --", attr);
- }
-
- need_clear = true;
- }
- if (reg_recording != 0
- && edit_submode == NULL // otherwise it gets too long
- ) {
- recording_mode(attr);
- need_clear = true;
- }
-
- mode_displayed = true;
- if (need_clear || clear_cmdline || redraw_mode) {
- msg_clr_eos();
- }
- msg_didout = false; // overwrite this message
- length = msg_col;
- msg_col = 0;
- msg_no_more = false;
- lines_left = save_lines_left;
- need_wait_return = nwr_save; // never ask for hit-return for this
- } else if (clear_cmdline && msg_silent == 0) {
- // Clear the whole command line. Will reset "clear_cmdline".
- msg_clr_cmdline();
- } else if (redraw_mode) {
- msg_pos_mode();
- msg_clr_eos();
- }
-
- // NB: also handles clearing the showmode if it was empty or disabled
- msg_ext_flush_showmode();
-
- // In Visual mode the size of the selected area must be redrawn.
- if (VIsual_active) {
- clear_showcmd();
- }
-
- // If the last window has no status line and global statusline is disabled,
- // the ruler is after the mode message and must be redrawn
- win_T *last = lastwin_nofloating();
- if (redrawing() && last->w_status_height == 0 && global_stl_height() == 0) {
- win_redr_ruler(last, true);
- }
-
- redraw_cmdline = false;
- redraw_mode = false;
- clear_cmdline = false;
-
- return length;
-}
-
-/// Position for a mode message.
-static void msg_pos_mode(void)
-{
- msg_col = 0;
- msg_row = Rows - 1;
-}
-
-/// Delete mode message. Used when ESC is typed which is expected to end
-/// Insert mode (but Insert mode didn't end yet!).
-/// Caller should check "mode_displayed".
-void unshowmode(bool force)
-{
- // Don't delete it right now, when not redrawing or inside a mapping.
- if (!redrawing() || (!force && char_avail() && !KeyTyped)) {
- redraw_cmdline = true; // delete mode later
- } else {
- clearmode();
- }
-}
-
-// Clear the mode message.
-void clearmode(void)
-{
- const int save_msg_row = msg_row;
- const int save_msg_col = msg_col;
-
- msg_ext_ui_flush();
- msg_pos_mode();
- if (reg_recording != 0) {
- recording_mode(HL_ATTR(HLF_CM));
- }
- msg_clr_eos();
- msg_ext_flush_showmode();
-
- msg_col = save_msg_col;
- msg_row = save_msg_row;
-}
-
-static void recording_mode(int attr)
-{
- msg_puts_attr(_("recording"), attr);
- if (shortmess(SHM_RECORDING)) {
- return;
- }
-
- char s[7] = { ' ', '@', 0, 0, 0, 0, 0 };
- utf_char2bytes(reg_recording, s + 2);
- msg_puts_attr(s, attr);
-}
-
-void get_trans_bufname(buf_T *buf)
-{
- if (buf_spname(buf) != NULL) {
- xstrlcpy(NameBuff, buf_spname(buf), MAXPATHL);
- } else {
- home_replace(buf, buf->b_fname, NameBuff, MAXPATHL, true);
- }
- trans_characters(NameBuff, MAXPATHL);
-}
-
-/// Get the character to use in a separator between vertically split windows.
-/// Get its attributes in "*attr".
-int fillchar_vsep(win_T *wp, int *attr)
-{
- *attr = win_hl_attr(wp, HLF_C);
- return wp->w_p_fcs_chars.vert;
-}
-
-/// Get the character to use in a separator between horizontally split windows.
-/// Get its attributes in "*attr".
-int fillchar_hsep(win_T *wp, int *attr)
-{
- *attr = win_hl_attr(wp, HLF_C);
- return wp->w_p_fcs_chars.horiz;
-}
-
-/// Return true if redrawing should currently be done.
-bool redrawing(void)
-{
- return !RedrawingDisabled
- && !(p_lz && char_avail() && !KeyTyped && !do_redraw);
-}
-
-/// Return true if printing messages should currently be done.
-bool messaging(void)
-{
- // TODO(bfredl): with general support for "async" messages with p_ch,
- // this should be re-enabled.
- return !(p_lz && char_avail() && !KeyTyped) && (p_ch > 0 || ui_has(kUIMessages));
-}
-
-#define COL_RULER 17 // columns needed by standard ruler
-
-/// Compute columns for ruler and shown command. 'sc_col' is also used to
-/// decide what the maximum length of a message on the status line can be.
-/// If there is a status line for the last window, 'sc_col' is independent
-/// of 'ru_col'.
-void comp_col(void)
-{
- int last_has_status = (p_ls > 1 || (p_ls == 1 && !ONE_WINDOW));
-
- sc_col = 0;
- ru_col = 0;
- if (p_ru) {
- ru_col = (ru_wid ? ru_wid : COL_RULER) + 1;
- // no last status line, adjust sc_col
- if (!last_has_status) {
- sc_col = ru_col;
- }
- }
- if (p_sc) {
- sc_col += SHOWCMD_COLS;
- if (!p_ru || last_has_status) { // no need for separating space
- sc_col++;
- }
- }
- assert(sc_col >= 0
- && INT_MIN + sc_col <= Columns);
- sc_col = Columns - sc_col;
- assert(ru_col >= 0
- && INT_MIN + ru_col <= Columns);
- ru_col = Columns - ru_col;
- if (sc_col <= 0) { // screen too narrow, will become a mess
- sc_col = 1;
- }
- if (ru_col <= 0) {
- ru_col = 1;
- }
- set_vim_var_nr(VV_ECHOSPACE, sc_col - 1);
-}
-
-/// Return the width of the 'number' and 'relativenumber' column.
-/// Caller may need to check if 'number' or 'relativenumber' is set.
-/// Otherwise it depends on 'numberwidth' and the line count.
-int number_width(win_T *wp)
-{
- int n;
- linenr_T lnum;
-
- if (wp->w_p_rnu && !wp->w_p_nu) {
- // cursor line shows "0"
- lnum = wp->w_height_inner;
- } else {
- // cursor line shows absolute line number
- lnum = wp->w_buffer->b_ml.ml_line_count;
- }
-
- if (lnum == wp->w_nrwidth_line_count) {
- return wp->w_nrwidth_width;
- }
- wp->w_nrwidth_line_count = lnum;
-
- // make best estimate for 'statuscolumn'
- if (*wp->w_p_stc != NUL) {
- char buf[MAXPATHL];
- wp->w_nrwidth_width = 0;
- n = build_statuscol_str(wp, lnum, 0, 0, NUL, buf, NULL, NULL);
- n = MAX(n, (wp->w_p_nu || wp->w_p_rnu) * (int)wp->w_p_nuw);
- wp->w_nrwidth_width = MIN(n, MAX_NUMBERWIDTH);
- return wp->w_nrwidth_width;
- }
-
- n = 0;
- do {
- lnum /= 10;
- n++;
- } while (lnum > 0);
-
- // 'numberwidth' gives the minimal width plus one
- if (n < wp->w_p_nuw - 1) {
- n = (int)wp->w_p_nuw - 1;
- }
-
- // If 'signcolumn' is set to 'number' and there is a sign to display, then
- // the minimal width for the number column is 2.
- if (n < 2 && (wp->w_buffer->b_signlist != NULL)
- && (*wp->w_p_scl == 'n' && *(wp->w_p_scl + 1) == 'u')) {
- n = 2;
- }
-
- wp->w_nrwidth_width = n;
- return n;
-}
-
-/// Calls mb_cptr2char_adv(p) and returns the character.
-/// If "p" starts with "\x", "\u" or "\U" the hex or unicode value is used.
-/// Returns 0 for invalid hex or invalid UTF-8 byte.
-static int get_encoded_char_adv(const char **p)
-{
- const char *s = *p;
-
- if (s[0] == '\\' && (s[1] == 'x' || s[1] == 'u' || s[1] == 'U')) {
- int64_t num = 0;
- for (int bytes = s[1] == 'x' ? 1 : s[1] == 'u' ? 2 : 4; bytes > 0; bytes--) {
- *p += 2;
- int n = hexhex2nr(*p);
- if (n < 0) {
- return 0;
- }
- num = num * 256 + n;
- }
- *p += 2;
- return (int)num;
- }
-
- // TODO(bfredl): use schar_T representation and utfc_ptr2len
- int clen = utf_ptr2len(s);
- int c = mb_cptr2char_adv(p);
- if (clen == 1 && c > 127) { // Invalid UTF-8 byte
- return 0;
- }
- return c;
-}
-
-/// Handle setting 'listchars' or 'fillchars'.
-/// Assume monocell characters
-///
-/// @param varp either the global or the window-local value.
-/// @param apply if false, do not store the flags, only check for errors.
-/// @return error message, NULL if it's OK.
-char *set_chars_option(win_T *wp, char **varp, bool apply)
-{
- const char *last_multispace = NULL; // Last occurrence of "multispace:"
- const char *last_lmultispace = NULL; // Last occurrence of "leadmultispace:"
- int multispace_len = 0; // Length of lcs-multispace string
- int lead_multispace_len = 0; // Length of lcs-leadmultispace string
- const bool is_listchars = (varp == &p_lcs || varp == &wp->w_p_lcs);
-
- struct chars_tab {
- int *cp; ///< char value
- char *name; ///< char id
- int def; ///< default value
- };
-
- // XXX: Characters taking 2 columns is forbidden (TUI limitation?). Set old defaults in this case.
- struct chars_tab fcs_tab[] = {
- { &wp->w_p_fcs_chars.stl, "stl", ' ' },
- { &wp->w_p_fcs_chars.stlnc, "stlnc", ' ' },
- { &wp->w_p_fcs_chars.wbr, "wbr", ' ' },
- { &wp->w_p_fcs_chars.horiz, "horiz", char2cells(0x2500) == 1 ? 0x2500 : '-' }, // ─
- { &wp->w_p_fcs_chars.horizup, "horizup", char2cells(0x2534) == 1 ? 0x2534 : '-' }, // ┴
- { &wp->w_p_fcs_chars.horizdown, "horizdown", char2cells(0x252c) == 1 ? 0x252c : '-' }, // ┬
- { &wp->w_p_fcs_chars.vert, "vert", char2cells(0x2502) == 1 ? 0x2502 : '|' }, // │
- { &wp->w_p_fcs_chars.vertleft, "vertleft", char2cells(0x2524) == 1 ? 0x2524 : '|' }, // ┤
- { &wp->w_p_fcs_chars.vertright, "vertright", char2cells(0x251c) == 1 ? 0x251c : '|' }, // ├
- { &wp->w_p_fcs_chars.verthoriz, "verthoriz", char2cells(0x253c) == 1 ? 0x253c : '+' }, // ┼
- { &wp->w_p_fcs_chars.fold, "fold", char2cells(0x00b7) == 1 ? 0x00b7 : '-' }, // ·
- { &wp->w_p_fcs_chars.foldopen, "foldopen", '-' },
- { &wp->w_p_fcs_chars.foldclosed, "foldclose", '+' },
- { &wp->w_p_fcs_chars.foldsep, "foldsep", char2cells(0x2502) == 1 ? 0x2502 : '|' }, // │
- { &wp->w_p_fcs_chars.diff, "diff", '-' },
- { &wp->w_p_fcs_chars.msgsep, "msgsep", ' ' },
- { &wp->w_p_fcs_chars.eob, "eob", '~' },
- { &wp->w_p_fcs_chars.lastline, "lastline", '@' },
- };
-
- struct chars_tab lcs_tab[] = {
- { &wp->w_p_lcs_chars.eol, "eol", NUL },
- { &wp->w_p_lcs_chars.ext, "extends", NUL },
- { &wp->w_p_lcs_chars.nbsp, "nbsp", NUL },
- { &wp->w_p_lcs_chars.prec, "precedes", NUL },
- { &wp->w_p_lcs_chars.space, "space", NUL },
- { &wp->w_p_lcs_chars.tab2, "tab", NUL },
- { &wp->w_p_lcs_chars.lead, "lead", NUL },
- { &wp->w_p_lcs_chars.trail, "trail", NUL },
- { &wp->w_p_lcs_chars.conceal, "conceal", NUL },
- };
-
- struct chars_tab *tab;
- int entries;
- const char *value = *varp;
- if (is_listchars) {
- tab = lcs_tab;
- entries = ARRAY_SIZE(lcs_tab);
- if (varp == &wp->w_p_lcs && wp->w_p_lcs[0] == NUL) {
- value = p_lcs; // local value is empty, use the global value
- }
- } else {
- tab = fcs_tab;
- entries = ARRAY_SIZE(fcs_tab);
- if (varp == &wp->w_p_fcs && wp->w_p_fcs[0] == NUL) {
- value = p_fcs; // local value is empty, use the global value
- }
- }
-
- // first round: check for valid value, second round: assign values
- for (int round = 0; round <= (apply ? 1 : 0); round++) {
- if (round > 0) {
- // After checking that the value is valid: set defaults
- for (int i = 0; i < entries; i++) {
- if (tab[i].cp != NULL) {
- *(tab[i].cp) = tab[i].def;
- }
- }
- if (is_listchars) {
- wp->w_p_lcs_chars.tab1 = NUL;
- wp->w_p_lcs_chars.tab3 = NUL;
-
- xfree(wp->w_p_lcs_chars.multispace);
- if (multispace_len > 0) {
- wp->w_p_lcs_chars.multispace = xmalloc(((size_t)multispace_len + 1) * sizeof(int));
- wp->w_p_lcs_chars.multispace[multispace_len] = NUL;
- } else {
- wp->w_p_lcs_chars.multispace = NULL;
- }
-
- xfree(wp->w_p_lcs_chars.leadmultispace);
- if (lead_multispace_len > 0) {
- wp->w_p_lcs_chars.leadmultispace
- = xmalloc(((size_t)lead_multispace_len + 1) * sizeof(int));
- wp->w_p_lcs_chars.leadmultispace[lead_multispace_len] = NUL;
- } else {
- wp->w_p_lcs_chars.leadmultispace = NULL;
- }
- }
- }
- const char *p = value;
- while (*p) {
- int i;
- for (i = 0; i < entries; i++) {
- const size_t len = strlen(tab[i].name);
- if (strncmp(p, tab[i].name, len) == 0
- && p[len] == ':'
- && p[len + 1] != NUL) {
- const char *s = p + len + 1;
- int c1 = get_encoded_char_adv(&s);
- if (c1 == 0 || char2cells(c1) > 1) {
- return e_invarg;
- }
- int c2 = 0, c3 = 0;
- if (tab[i].cp == &wp->w_p_lcs_chars.tab2) {
- if (*s == NUL) {
- return e_invarg;
- }
- c2 = get_encoded_char_adv(&s);
- if (c2 == 0 || char2cells(c2) > 1) {
- return e_invarg;
- }
- if (!(*s == ',' || *s == NUL)) {
- c3 = get_encoded_char_adv(&s);
- if (c3 == 0 || char2cells(c3) > 1) {
- return e_invarg;
- }
- }
- }
- if (*s == ',' || *s == NUL) {
- if (round > 0) {
- if (tab[i].cp == &wp->w_p_lcs_chars.tab2) {
- wp->w_p_lcs_chars.tab1 = c1;
- wp->w_p_lcs_chars.tab2 = c2;
- wp->w_p_lcs_chars.tab3 = c3;
- } else if (tab[i].cp != NULL) {
- *(tab[i].cp) = c1;
- }
- }
- p = s;
- break;
- }
- }
- }
-
- if (i == entries) {
- const size_t len = strlen("multispace");
- const size_t len2 = strlen("leadmultispace");
- if (is_listchars
- && strncmp(p, "multispace", len) == 0
- && p[len] == ':'
- && p[len + 1] != NUL) {
- const char *s = p + len + 1;
- if (round == 0) {
- // Get length of lcs-multispace string in the first round
- last_multispace = p;
- multispace_len = 0;
- while (*s != NUL && *s != ',') {
- int c1 = get_encoded_char_adv(&s);
- if (c1 == 0 || char2cells(c1) > 1) {
- return e_invarg;
- }
- multispace_len++;
- }
- if (multispace_len == 0) {
- // lcs-multispace cannot be an empty string
- return e_invarg;
- }
- p = s;
- } else {
- int multispace_pos = 0;
- while (*s != NUL && *s != ',') {
- int c1 = get_encoded_char_adv(&s);
- if (p == last_multispace) {
- wp->w_p_lcs_chars.multispace[multispace_pos++] = c1;
- }
- }
- p = s;
- }
- } else if (is_listchars
- && strncmp(p, "leadmultispace", len2) == 0
- && p[len2] == ':'
- && p[len2 + 1] != NUL) {
- const char *s = p + len2 + 1;
- if (round == 0) {
- // get length of lcs-leadmultispace string in first round
- last_lmultispace = p;
- lead_multispace_len = 0;
- while (*s != NUL && *s != ',') {
- int c1 = get_encoded_char_adv(&s);
- if (c1 == 0 || char2cells(c1) > 1) {
- return e_invarg;
- }
- lead_multispace_len++;
- }
- if (lead_multispace_len == 0) {
- // lcs-leadmultispace cannot be an empty string
- return e_invarg;
- }
- p = s;
- } else {
- int multispace_pos = 0;
- while (*s != NUL && *s != ',') {
- int c1 = get_encoded_char_adv(&s);
- if (p == last_lmultispace) {
- wp->w_p_lcs_chars.leadmultispace[multispace_pos++] = c1;
- }
- }
- p = s;
- }
- } else {
- return e_invarg;
- }
- }
-
- if (*p == ',') {
- p++;
- }
- }
- }
-
- return NULL; // no error
-}
-
-/// Check all global and local values of 'listchars' and 'fillchars'.
-/// May set different defaults in case character widths change.
-///
-/// @return an untranslated error message if any of them is invalid, NULL otherwise.
-char *check_chars_options(void)
-{
- if (set_chars_option(curwin, &p_lcs, false) != NULL) {
- return e_conflicts_with_value_of_listchars;
- }
- if (set_chars_option(curwin, &p_fcs, false) != NULL) {
- return e_conflicts_with_value_of_fillchars;
- }
- FOR_ALL_TAB_WINDOWS(tp, wp) {
- if (set_chars_option(wp, &wp->w_p_lcs, true) != NULL) {
- return e_conflicts_with_value_of_listchars;
- }
- if (set_chars_option(wp, &wp->w_p_fcs, true) != NULL) {
- return e_conflicts_with_value_of_fillchars;
- }
- }
- return NULL;
-}
-
-/// Check if the new Nvim application "screen" dimensions are valid.
-/// Correct it if it's too small or way too big.
-void check_screensize(void)
-{
- // Limit Rows and Columns to avoid an overflow in Rows * Columns.
- if (Rows < min_rows()) {
- // need room for one window and command line
- Rows = min_rows();
- } else if (Rows > 1000) {
- Rows = 1000;
- }
-
- if (Columns < MIN_COLUMNS) {
- Columns = MIN_COLUMNS;
- } else if (Columns > 10000) {
- Columns = 10000;
- }
-}
generated by cgit (git 2.34.1) at 2025-04-28 15:05:07 +0000