3181 lines
90 KiB
C
3181 lines
90 KiB
C
/**************************************************************************
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* text.c -- This file is part of GNU nano. *
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* *
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* Copyright (C) 1999-2011, 2013-2021 Free Software Foundation, Inc. *
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* Copyright (C) 2014-2015 Mark Majeres *
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* Copyright (C) 2016 Mike Scalora *
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* Copyright (C) 2016 Sumedh Pendurkar *
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* Copyright (C) 2018 Marco Diego Aurélio Mesquita *
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* Copyright (C) 2015-2021 Benno Schulenberg *
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* *
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* GNU nano is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published *
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* by the Free Software Foundation, either version 3 of the License, *
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* or (at your option) any later version. *
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* *
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* GNU nano is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty *
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
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* See the GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see http://www.gnu.org/licenses/. *
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* *
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**************************************************************************/
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#include "prototypes.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#if defined(__APPLE__) && !defined(st_mtim)
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#define st_mtim st_mtimespec
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#endif
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#ifdef ENABLE_WORDCOMPLETION
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static int pletion_x = 0;
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/* The x position in pletion_line of the last found completion. */
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static completionstruct *list_of_completions;
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/* A linked list of the completions that have been attempted. */
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#endif
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#ifndef NANO_TINY
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/* Toggle the mark. */
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void do_mark(void)
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{
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if (!openfile->mark) {
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openfile->mark = openfile->current;
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openfile->mark_x = openfile->current_x;
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openfile->softmark = FALSE;
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statusbar(_("Mark Set"));
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} else {
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openfile->mark = NULL;
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statusbar(_("Mark Unset"));
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refresh_needed = TRUE;
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}
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}
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#endif
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/* Insert a tab. Or, if --tabstospaces is in effect, insert the number
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* of spaces that a tab would normally take up at this position. */
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void do_tab(void)
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{
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#ifdef ENABLE_COLOR
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if (openfile->syntax && openfile->syntax->tab)
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inject(openfile->syntax->tab, strlen(openfile->syntax->tab));
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else
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#endif
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#ifndef NANO_TINY
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if (ISSET(TABS_TO_SPACES)) {
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char *spaces = nmalloc(tabsize + 1);
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size_t length = tabsize - (xplustabs() % tabsize);
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memset(spaces, ' ', length);
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spaces[length] = '\0';
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inject(spaces, length);
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free(spaces);
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} else
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#endif
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inject((char *)"\t", 1);
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}
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#ifndef NANO_TINY
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/* Add an indent to the given line. */
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void indent_a_line(linestruct *line, char *indentation)
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{
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size_t length = strlen(line->data);
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size_t indent_len = strlen(indentation);
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/* If the requested indentation is empty, don't change the line. */
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if (indent_len == 0)
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return;
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/* Add the fabricated indentation to the beginning of the line. */
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line->data = nrealloc(line->data, length + indent_len + 1);
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memmove(line->data + indent_len, line->data, length + 1);
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memcpy(line->data, indentation, indent_len);
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openfile->totsize += indent_len;
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/* Compensate for the change in the current line. */
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if (line == openfile->mark && openfile->mark_x > 0)
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openfile->mark_x += indent_len;
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if (line == openfile->current && openfile->current_x > 0) {
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openfile->current_x += indent_len;
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openfile->placewewant = xplustabs();
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}
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}
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/* Indent the current line (or the marked lines) by tabsize columns.
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* This inserts either a tab character or a tab's worth of spaces,
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* depending on whether --tabstospaces is in effect. */
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void do_indent(void)
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{
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char *indentation;
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linestruct *top, *bot, *line;
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/* Use either all the marked lines or just the current line. */
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get_range(&top, &bot);
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/* Skip any leading empty lines. */
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while (top != bot->next && top->data[0] == '\0')
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top = top->next;
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/* If all lines are empty, there is nothing to do. */
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if (top == bot->next)
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return;
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indentation = nmalloc(tabsize + 1);
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#ifdef ENABLE_COLOR
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if (openfile->syntax && openfile->syntax->tab)
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indentation = mallocstrcpy(indentation, openfile->syntax->tab);
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else
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#endif
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/* Set the indentation to either a bunch of spaces or a single tab. */
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if (ISSET(TABS_TO_SPACES)) {
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memset(indentation, ' ', tabsize);
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indentation[tabsize] = '\0';
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} else {
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indentation[0] = '\t';
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indentation[1] = '\0';
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}
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add_undo(INDENT, NULL);
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/* Go through each of the lines, adding an indent to the non-empty ones,
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* and recording whatever was added in the undo item. */
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for (line = top; line != bot->next; line = line->next) {
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char *real_indent = (line->data[0] == '\0') ? "" : indentation;
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indent_a_line(line, real_indent);
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update_multiline_undo(line->lineno, real_indent);
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}
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free(indentation);
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set_modified();
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ensure_firstcolumn_is_aligned();
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refresh_needed = TRUE;
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shift_held = TRUE;
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}
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/* Return the number of bytes of whitespace at the start of the given text,
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* but at most a tab's worth. */
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size_t length_of_white(const char *text)
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{
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size_t white_count = 0;
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#ifdef ENABLE_COLOR
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if (openfile->syntax && openfile->syntax->tab) {
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size_t thelength = strlen(openfile->syntax->tab);
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while (text[white_count] == openfile->syntax->tab[white_count])
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if (++white_count == thelength)
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return thelength;
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white_count = 0;
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}
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#endif
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while (TRUE) {
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if (*text == '\t')
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return white_count + 1;
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if (*text != ' ')
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return white_count;
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if (++white_count == tabsize)
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return tabsize;
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text++;
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}
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}
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/* Adjust the positions of mark and cursor when they are on the given line. */
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void compensate_leftward(linestruct *line, size_t leftshift)
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{
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if (line == openfile->mark) {
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if (openfile->mark_x < leftshift)
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openfile->mark_x = 0;
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else
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openfile->mark_x -= leftshift;
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}
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if (line == openfile->current) {
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if (openfile->current_x < leftshift)
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openfile->current_x = 0;
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else
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openfile->current_x -= leftshift;
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openfile->placewewant = xplustabs();
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}
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}
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/* Remove an indent from the given line. */
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void unindent_a_line(linestruct *line, size_t indent_len)
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{
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size_t length = strlen(line->data);
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/* If the indent is empty, don't change the line. */
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if (indent_len == 0)
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return;
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/* Remove the first tab's worth of whitespace from this line. */
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memmove(line->data, line->data + indent_len, length - indent_len + 1);
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openfile->totsize -= indent_len;
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/* Adjust the positions of mark and cursor, when they are affected. */
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compensate_leftward(line, indent_len);
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}
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/* Unindent the current line (or the marked lines) by tabsize columns.
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* The removed indent can be a mixture of spaces plus at most one tab. */
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void do_unindent(void)
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{
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linestruct *top, *bot, *line;
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/* Use either all the marked lines or just the current line. */
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get_range(&top, &bot);
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/* Skip any leading lines that cannot be unindented. */
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while (top != bot->next && length_of_white(top->data) == 0)
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top = top->next;
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/* If none of the lines can be unindented, there is nothing to do. */
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if (top == bot->next)
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return;
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add_undo(UNINDENT, NULL);
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/* Go through each of the lines, removing their leading indent where
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* possible, and saving the removed whitespace in the undo item. */
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for (line = top; line != bot->next; line = line->next) {
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size_t indent_len = length_of_white(line->data);
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char *indentation = measured_copy(line->data, indent_len);
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unindent_a_line(line, indent_len);
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update_multiline_undo(line->lineno, indentation);
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free(indentation);
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}
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set_modified();
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ensure_firstcolumn_is_aligned();
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refresh_needed = TRUE;
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shift_held = TRUE;
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}
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/* Perform an undo or redo for an indent or unindent action. */
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void handle_indent_action(undostruct *u, bool undoing, bool add_indent)
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{
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groupstruct *group = u->grouping;
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linestruct *line = line_from_number(group->top_line);
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/* When redoing, reposition the cursor and let the indenter adjust it. */
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if (!undoing)
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goto_line_posx(u->head_lineno, u->head_x);
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/* For each line in the group, add or remove the individual indent. */
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while (line != NULL && line->lineno <= group->bottom_line) {
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char *blanks = group->indentations[line->lineno - group->top_line];
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if (undoing ^ add_indent)
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indent_a_line(line, blanks);
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else
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unindent_a_line(line, strlen(blanks));
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line = line->next;
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}
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/* When undoing, reposition the cursor to the recorded location. */
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if (undoing)
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goto_line_posx(u->head_lineno, u->head_x);
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refresh_needed = TRUE;
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}
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#endif /* !NANO_TINY */
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#ifdef ENABLE_COMMENT
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/* Test whether the given line can be uncommented, or add or remove a comment,
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* depending on action. Return TRUE if the line is uncommentable, or when
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* anything was added or removed; FALSE otherwise. */
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bool comment_line(undo_type action, linestruct *line, const char *comment_seq)
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{
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size_t comment_seq_len = strlen(comment_seq);
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const char *post_seq = strchr(comment_seq, '|');
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/* The postfix, if this is a bracketing type comment sequence. */
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size_t pre_len = post_seq ? post_seq++ - comment_seq : comment_seq_len;
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/* Length of prefix. */
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size_t post_len = post_seq ? comment_seq_len - pre_len - 1 : 0;
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/* Length of postfix. */
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size_t line_len = strlen(line->data);
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if (!ISSET(NO_NEWLINES) && line == openfile->filebot)
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return FALSE;
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if (action == COMMENT) {
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/* Make room for the comment sequence(s), move the text right and
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* copy them in. */
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line->data = nrealloc(line->data, line_len + pre_len + post_len + 1);
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memmove(line->data + pre_len, line->data, line_len + 1);
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memmove(line->data, comment_seq, pre_len);
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if (post_len > 0)
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memmove(line->data + pre_len + line_len, post_seq, post_len + 1);
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openfile->totsize += pre_len + post_len;
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/* If needed, adjust the position of the mark and of the cursor. */
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if (line == openfile->mark && openfile->mark_x > 0)
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openfile->mark_x += pre_len;
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if (line == openfile->current && openfile->current_x > 0) {
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openfile->current_x += pre_len;
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openfile->placewewant = xplustabs();
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}
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return TRUE;
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}
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/* If the line is commented, report it as uncommentable, or uncomment it. */
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if (strncmp(line->data, comment_seq, pre_len) == 0 && (post_len == 0 ||
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strcmp(line->data + line_len - post_len, post_seq) == 0)) {
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if (action == PREFLIGHT)
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return TRUE;
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/* Erase the comment prefix by moving the non-comment part. */
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memmove(line->data, line->data + pre_len, line_len - pre_len);
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/* Truncate the postfix if there was one. */
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line->data[line_len - pre_len - post_len] = '\0';
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openfile->totsize -= pre_len + post_len;
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/* Adjust the positions of mark and cursor, when needed. */
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compensate_leftward(line, pre_len);
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return TRUE;
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}
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return FALSE;
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}
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/* Comment or uncomment the current line or the marked lines. */
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void do_comment(void)
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{
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const char *comment_seq = GENERAL_COMMENT_CHARACTER;
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undo_type action = UNCOMMENT;
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linestruct *top, *bot, *line;
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bool empty, all_empty = TRUE;
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#ifdef ENABLE_COLOR
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if (openfile->syntax)
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comment_seq = openfile->syntax->comment;
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if (*comment_seq == '\0') {
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statusline(AHEM, _("Commenting is not supported for this file type"));
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return;
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}
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#endif
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/* Determine which lines to work on. */
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get_range(&top, &bot);
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/* If only the magic line is selected, don't do anything. */
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if (top == bot && bot == openfile->filebot && !ISSET(NO_NEWLINES)) {
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statusline(AHEM, _("Cannot comment past end of file"));
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return;
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}
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/* Figure out whether to comment or uncomment the selected line or lines. */
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for (line = top; line != bot->next; line = line->next) {
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empty = white_string(line->data);
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/* If this line is not blank and not commented, we comment all. */
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if (!empty && !comment_line(PREFLIGHT, line, comment_seq)) {
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action = COMMENT;
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break;
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}
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all_empty = all_empty && empty;
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}
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/* If all selected lines are blank, we comment them. */
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action = all_empty ? COMMENT : action;
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add_undo(action, NULL);
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/* Store the comment sequence used for the operation, because it could
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* change when the file name changes; we need to know what it was. */
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openfile->current_undo->strdata = copy_of(comment_seq);
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/* Comment/uncomment each of the selected lines when possible, and
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* store undo data when a line changed. */
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for (line = top; line != bot->next; line = line->next)
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if (comment_line(action, line, comment_seq))
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update_multiline_undo(line->lineno, "");
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set_modified();
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ensure_firstcolumn_is_aligned();
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refresh_needed = TRUE;
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shift_held = TRUE;
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}
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/* Perform an undo or redo for a comment or uncomment action. */
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void handle_comment_action(undostruct *u, bool undoing, bool add_comment)
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{
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groupstruct *group = u->grouping;
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/* When redoing, reposition the cursor and let the commenter adjust it. */
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if (!undoing)
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goto_line_posx(u->head_lineno, u->head_x);
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while (group) {
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linestruct *line = line_from_number(group->top_line);
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while (line != NULL && line->lineno <= group->bottom_line) {
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comment_line(undoing ^ add_comment ?
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COMMENT : UNCOMMENT, line, u->strdata);
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line = line->next;
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}
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group = group->next;
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}
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/* When undoing, reposition the cursor to the recorded location. */
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if (undoing)
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goto_line_posx(u->head_lineno, u->head_x);
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refresh_needed = TRUE;
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}
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#endif /* ENABLE_COMMENT */
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#ifndef NANO_TINY
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#define redo_paste undo_cut
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#define undo_paste redo_cut
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/* Undo a cut, or redo a paste. */
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void undo_cut(undostruct *u)
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{
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goto_line_posx(u->head_lineno, (u->xflags & WAS_WHOLE_LINE) ? 0 : u->head_x);
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|
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/* Clear an inherited anchor but not a user-placed one. */
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if (!(u->xflags & HAD_ANCHOR_AT_START))
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openfile->current->has_anchor = FALSE;
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if (u->cutbuffer)
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copy_from_buffer(u->cutbuffer);
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/* If originally the last line was cut too, remove an extra magic line. */
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if ((u->xflags & INCLUDED_LAST_LINE) && !ISSET(NO_NEWLINES) &&
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openfile->filebot != openfile->current &&
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openfile->filebot->prev->data[0] == '\0')
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remove_magicline();
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if (u->xflags & CURSOR_WAS_AT_HEAD)
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goto_line_posx(u->head_lineno, u->head_x);
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}
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/* Redo a cut, or undo a paste. */
|
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void redo_cut(undostruct *u)
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{
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linestruct *oldcutbuffer = cutbuffer;
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cutbuffer = NULL;
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openfile->mark = line_from_number(u->head_lineno);
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openfile->mark_x = (u->xflags & WAS_WHOLE_LINE) ? 0 : u->head_x;
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goto_line_posx(u->tail_lineno, u->tail_x);
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do_snip(TRUE, FALSE, u->type == ZAP);
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free_lines(cutbuffer);
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cutbuffer = oldcutbuffer;
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}
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|
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/* Undo the last thing(s) we did. */
|
|
void do_undo(void)
|
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{
|
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undostruct *u = openfile->current_undo;
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linestruct *line = NULL, *intruder;
|
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linestruct *oldcutbuffer;
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char *data, *undidmsg = NULL;
|
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size_t original_x, regain_from_x;
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|
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if (u == NULL) {
|
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statusline(AHEM, _("Nothing to undo"));
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return;
|
|
}
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|
|
if (u->type <= REPLACE)
|
|
line = line_from_number(u->tail_lineno);
|
|
|
|
switch (u->type) {
|
|
case ADD:
|
|
/* TRANSLATORS: The next thirteen strings describe actions
|
|
* that are undone or redone. They are all nouns, not verbs. */
|
|
undidmsg = _("addition");
|
|
if ((u->xflags & INCLUDED_LAST_LINE) && !ISSET(NO_NEWLINES))
|
|
remove_magicline();
|
|
memmove(line->data + u->head_x, line->data + u->head_x + strlen(u->strdata),
|
|
strlen(line->data + u->head_x) - strlen(u->strdata) + 1);
|
|
goto_line_posx(u->head_lineno, u->head_x);
|
|
break;
|
|
case ENTER:
|
|
undidmsg = _("line break");
|
|
/* An <Enter> at the end of leading whitespace while autoindenting has
|
|
* deleted the whitespace, and stored an x position of zero. In that
|
|
* case, adjust the positions to return to and to scoop data from. */
|
|
original_x = (u->head_x == 0) ? u->tail_x : u->head_x;
|
|
regain_from_x = (u->head_x == 0) ? 0 : u->tail_x;
|
|
line->data = nrealloc(line->data, strlen(line->data) +
|
|
strlen(&u->strdata[regain_from_x]) + 1);
|
|
strcat(line->data, &u->strdata[regain_from_x]);
|
|
line->has_anchor |= line->next->has_anchor;
|
|
unlink_node(line->next);
|
|
renumber_from(line);
|
|
goto_line_posx(u->head_lineno, original_x);
|
|
break;
|
|
case BACK:
|
|
case DEL:
|
|
undidmsg = _("deletion");
|
|
data = nmalloc(strlen(line->data) + strlen(u->strdata) + 1);
|
|
strncpy(data, line->data, u->head_x);
|
|
strcpy(&data[u->head_x], u->strdata);
|
|
strcpy(&data[u->head_x + strlen(u->strdata)], &line->data[u->head_x]);
|
|
free(line->data);
|
|
line->data = data;
|
|
goto_line_posx(u->tail_lineno, u->tail_x);
|
|
break;
|
|
case JOIN:
|
|
undidmsg = _("line join");
|
|
/* When the join was done by a Backspace at the tail of the file,
|
|
* and the nonewlines flag isn't set, do not re-add a newline that
|
|
* wasn't actually deleted; just position the cursor. */
|
|
if ((u->xflags & WAS_BACKSPACE_AT_EOF) && !ISSET(NO_NEWLINES)) {
|
|
goto_line_posx(openfile->filebot->lineno, 0);
|
|
break;
|
|
}
|
|
line->data[u->tail_x] = '\0';
|
|
intruder = make_new_node(line);
|
|
intruder->data = copy_of(u->strdata);
|
|
splice_node(line, intruder);
|
|
renumber_from(intruder);
|
|
goto_line_posx(u->head_lineno, u->head_x);
|
|
break;
|
|
case REPLACE:
|
|
undidmsg = _("replacement");
|
|
if ((u->xflags & INCLUDED_LAST_LINE) && !ISSET(NO_NEWLINES))
|
|
remove_magicline();
|
|
data = u->strdata;
|
|
u->strdata = line->data;
|
|
line->data = data;
|
|
goto_line_posx(u->head_lineno, u->head_x);
|
|
break;
|
|
#ifdef ENABLE_WRAPPING
|
|
case SPLIT_BEGIN:
|
|
undidmsg = _("addition");
|
|
break;
|
|
case SPLIT_END:
|
|
openfile->current_undo = openfile->current_undo->next;
|
|
while (openfile->current_undo->type != SPLIT_BEGIN)
|
|
do_undo();
|
|
u = openfile->current_undo;
|
|
break;
|
|
#endif
|
|
case ZAP:
|
|
undidmsg = _("erasure");
|
|
undo_cut(u);
|
|
break;
|
|
case CUT_TO_EOF:
|
|
case CUT:
|
|
/* TRANSLATORS: Remember: these are nouns, NOT verbs. */
|
|
undidmsg = _("cut");
|
|
undo_cut(u);
|
|
break;
|
|
case PASTE:
|
|
undidmsg = _("paste");
|
|
undo_paste(u);
|
|
if ((u->xflags & INCLUDED_LAST_LINE) && !ISSET(NO_NEWLINES) &&
|
|
openfile->filebot != openfile->current)
|
|
remove_magicline();
|
|
break;
|
|
case INSERT:
|
|
undidmsg = _("insertion");
|
|
oldcutbuffer = cutbuffer;
|
|
cutbuffer = NULL;
|
|
goto_line_posx(u->head_lineno, u->head_x);
|
|
openfile->mark = line_from_number(u->tail_lineno);
|
|
openfile->mark_x = u->tail_x;
|
|
cut_marked_region();
|
|
u->cutbuffer = cutbuffer;
|
|
cutbuffer = oldcutbuffer;
|
|
if ((u->xflags & INCLUDED_LAST_LINE) && !ISSET(NO_NEWLINES) &&
|
|
openfile->filebot != openfile->current)
|
|
remove_magicline();
|
|
break;
|
|
case COUPLE_BEGIN:
|
|
undidmsg = u->strdata;
|
|
goto_line_posx(u->head_lineno, u->head_x);
|
|
openfile->current_y = u->tail_lineno;
|
|
adjust_viewport(STATIONARY);
|
|
break;
|
|
case COUPLE_END:
|
|
/* Remember the row of the cursor for a possible redo. */
|
|
openfile->current_undo->head_lineno = openfile->current_y;
|
|
openfile->current_undo = openfile->current_undo->next;
|
|
do_undo();
|
|
do_undo();
|
|
do_undo();
|
|
return;
|
|
case INDENT:
|
|
handle_indent_action(u, TRUE, TRUE);
|
|
undidmsg = _("indent");
|
|
break;
|
|
case UNINDENT:
|
|
handle_indent_action(u, TRUE, FALSE);
|
|
undidmsg = _("unindent");
|
|
break;
|
|
#ifdef ENABLE_COMMENT
|
|
case COMMENT:
|
|
handle_comment_action(u, TRUE, TRUE);
|
|
undidmsg = _("comment");
|
|
break;
|
|
case UNCOMMENT:
|
|
handle_comment_action(u, TRUE, FALSE);
|
|
undidmsg = _("uncomment");
|
|
break;
|
|
#endif
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (undidmsg && !pletion_line)
|
|
statusline(HUSH, _("Undid %s"), undidmsg);
|
|
|
|
openfile->current_undo = openfile->current_undo->next;
|
|
openfile->last_action = OTHER;
|
|
openfile->mark = NULL;
|
|
openfile->placewewant = xplustabs();
|
|
|
|
openfile->totsize = u->wassize;
|
|
|
|
/* When at the point where the buffer was last saved, unset "Modified". */
|
|
if (openfile->current_undo == openfile->last_saved) {
|
|
openfile->modified = FALSE;
|
|
titlebar(NULL);
|
|
} else
|
|
set_modified();
|
|
}
|
|
|
|
/* Redo the last thing(s) we undid. */
|
|
void do_redo(void)
|
|
{
|
|
linestruct *line = NULL, *intruder;
|
|
char *data, *redidmsg = NULL;
|
|
bool suppress_modification = FALSE;
|
|
undostruct *u = openfile->undotop;
|
|
|
|
if (u == NULL || u == openfile->current_undo) {
|
|
statusline(AHEM, _("Nothing to redo"));
|
|
return;
|
|
}
|
|
|
|
/* Find the item before the current one in the undo stack. */
|
|
while (u->next != openfile->current_undo)
|
|
u = u->next;
|
|
|
|
if (u->type <= REPLACE)
|
|
line = line_from_number(u->tail_lineno);
|
|
|
|
switch (u->type) {
|
|
case ADD:
|
|
redidmsg = _("addition");
|
|
if ((u->xflags & INCLUDED_LAST_LINE) && !ISSET(NO_NEWLINES))
|
|
new_magicline();
|
|
data = nmalloc(strlen(line->data) + strlen(u->strdata) + 1);
|
|
strncpy(data, line->data, u->head_x);
|
|
strcpy(&data[u->head_x], u->strdata);
|
|
strcpy(&data[u->head_x + strlen(u->strdata)], &line->data[u->head_x]);
|
|
free(line->data);
|
|
line->data = data;
|
|
goto_line_posx(u->tail_lineno, u->tail_x);
|
|
break;
|
|
case ENTER:
|
|
redidmsg = _("line break");
|
|
line->data[u->head_x] = '\0';
|
|
intruder = make_new_node(line);
|
|
intruder->data = copy_of(u->strdata);
|
|
splice_node(line, intruder);
|
|
renumber_from(intruder);
|
|
goto_line_posx(u->head_lineno + 1, u->tail_x);
|
|
break;
|
|
case BACK:
|
|
case DEL:
|
|
redidmsg = _("deletion");
|
|
memmove(line->data + u->head_x, line->data + u->head_x + strlen(u->strdata),
|
|
strlen(line->data + u->head_x) - strlen(u->strdata) + 1);
|
|
goto_line_posx(u->head_lineno, u->head_x);
|
|
break;
|
|
case JOIN:
|
|
redidmsg = _("line join");
|
|
/* When the join was done by a Backspace at the tail of the file,
|
|
* and the nonewlines flag isn't set, do not join anything, as
|
|
* nothing was actually deleted; just position the cursor. */
|
|
if ((u->xflags & WAS_BACKSPACE_AT_EOF) && !ISSET(NO_NEWLINES)) {
|
|
goto_line_posx(u->tail_lineno, u->tail_x);
|
|
break;
|
|
}
|
|
line->data = nrealloc(line->data, strlen(line->data) + strlen(u->strdata) + 1);
|
|
strcat(line->data, u->strdata);
|
|
unlink_node(line->next);
|
|
renumber_from(line);
|
|
goto_line_posx(u->tail_lineno, u->tail_x);
|
|
break;
|
|
case REPLACE:
|
|
redidmsg = _("replacement");
|
|
if ((u->xflags & INCLUDED_LAST_LINE) && !ISSET(NO_NEWLINES))
|
|
new_magicline();
|
|
data = u->strdata;
|
|
u->strdata = line->data;
|
|
line->data = data;
|
|
goto_line_posx(u->head_lineno, u->head_x);
|
|
break;
|
|
#ifdef ENABLE_WRAPPING
|
|
case SPLIT_BEGIN:
|
|
openfile->current_undo = u;
|
|
while (openfile->current_undo->type != SPLIT_END)
|
|
do_redo();
|
|
u = openfile->current_undo;
|
|
goto_line_posx(u->head_lineno, u->head_x);
|
|
break;
|
|
case SPLIT_END:
|
|
redidmsg = _("addition");
|
|
break;
|
|
#endif
|
|
case ZAP:
|
|
redidmsg = _("erasure");
|
|
redo_cut(u);
|
|
break;
|
|
case CUT_TO_EOF:
|
|
case CUT:
|
|
redidmsg = _("cut");
|
|
redo_cut(u);
|
|
break;
|
|
case PASTE:
|
|
redidmsg = _("paste");
|
|
redo_paste(u);
|
|
break;
|
|
case INSERT:
|
|
redidmsg = _("insertion");
|
|
goto_line_posx(u->head_lineno, u->head_x);
|
|
if (u->cutbuffer)
|
|
copy_from_buffer(u->cutbuffer);
|
|
else
|
|
suppress_modification = TRUE;
|
|
free_lines(u->cutbuffer);
|
|
u->cutbuffer = NULL;
|
|
break;
|
|
case COUPLE_BEGIN:
|
|
openfile->current_undo = u;
|
|
do_redo();
|
|
do_redo();
|
|
do_redo();
|
|
return;
|
|
case COUPLE_END:
|
|
redidmsg = u->strdata;
|
|
goto_line_posx(u->tail_lineno, u->tail_x);
|
|
openfile->current_y = u->head_lineno;
|
|
adjust_viewport(STATIONARY);
|
|
break;
|
|
case INDENT:
|
|
handle_indent_action(u, FALSE, TRUE);
|
|
redidmsg = _("indent");
|
|
break;
|
|
case UNINDENT:
|
|
handle_indent_action(u, FALSE, FALSE);
|
|
redidmsg = _("unindent");
|
|
break;
|
|
#ifdef ENABLE_COMMENT
|
|
case COMMENT:
|
|
handle_comment_action(u, FALSE, TRUE);
|
|
redidmsg = _("comment");
|
|
break;
|
|
case UNCOMMENT:
|
|
handle_comment_action(u, FALSE, FALSE);
|
|
redidmsg = _("uncomment");
|
|
break;
|
|
#endif
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (redidmsg)
|
|
statusline(HUSH, _("Redid %s"), redidmsg);
|
|
|
|
openfile->current_undo = u;
|
|
openfile->last_action = OTHER;
|
|
openfile->mark = NULL;
|
|
openfile->placewewant = xplustabs();
|
|
|
|
openfile->totsize = u->newsize;
|
|
|
|
/* When at the point where the buffer was last saved, unset "Modified". */
|
|
if (openfile->current_undo == openfile->last_saved) {
|
|
openfile->modified = FALSE;
|
|
titlebar(NULL);
|
|
} else if (!suppress_modification)
|
|
set_modified();
|
|
}
|
|
#endif /* !NANO_TINY */
|
|
|
|
/* Break the current line at the cursor position. */
|
|
void do_enter(void)
|
|
{
|
|
linestruct *newnode = make_new_node(openfile->current);
|
|
size_t extra = 0;
|
|
#ifndef NANO_TINY
|
|
linestruct *sampleline = openfile->current;
|
|
bool allblanks = FALSE;
|
|
|
|
if (ISSET(AUTOINDENT)) {
|
|
#ifdef ENABLE_JUSTIFY
|
|
/* When doing automatic long-line wrapping and the next line is
|
|
* in this same paragraph, use its indentation as the model. */
|
|
if (ISSET(BREAK_LONG_LINES) && sampleline->next != NULL &&
|
|
inpar(sampleline->next) && !begpar(sampleline->next, 0))
|
|
sampleline = sampleline->next;
|
|
#endif
|
|
extra = indent_length(sampleline->data);
|
|
|
|
/* When breaking in the indentation, limit the automatic one. */
|
|
if (extra > openfile->current_x)
|
|
extra = openfile->current_x;
|
|
else if (extra == openfile->current_x)
|
|
allblanks = TRUE;
|
|
}
|
|
#endif /* NANO_TINY */
|
|
newnode->data = nmalloc(strlen(openfile->current->data +
|
|
openfile->current_x) + extra + 1);
|
|
strcpy(&newnode->data[extra], openfile->current->data +
|
|
openfile->current_x);
|
|
#ifndef NANO_TINY
|
|
if (ISSET(AUTOINDENT)) {
|
|
/* Copy the whitespace from the sample line to the new one. */
|
|
strncpy(newnode->data, sampleline->data, extra);
|
|
/* If there were only blanks before the cursor, trim them. */
|
|
if (allblanks)
|
|
openfile->current_x = 0;
|
|
}
|
|
#endif
|
|
|
|
/* Make the current line end at the cursor position. */
|
|
openfile->current->data[openfile->current_x] = '\0';
|
|
|
|
#ifndef NANO_TINY
|
|
add_undo(ENTER, NULL);
|
|
|
|
/* Adjust the mark if it was on the current line after the cursor. */
|
|
if (openfile->mark == openfile->current &&
|
|
openfile->mark_x > openfile->current_x) {
|
|
openfile->mark = newnode;
|
|
openfile->mark_x += extra - openfile->current_x;
|
|
}
|
|
#endif
|
|
|
|
/* Insert the newly created line after the current one and renumber. */
|
|
splice_node(openfile->current, newnode);
|
|
renumber_from(newnode);
|
|
|
|
/* Put the cursor on the new line, after any automatic whitespace. */
|
|
openfile->current = newnode;
|
|
openfile->current_x = extra;
|
|
openfile->placewewant = xplustabs();
|
|
|
|
openfile->totsize++;
|
|
set_modified();
|
|
|
|
#ifndef NANO_TINY
|
|
if (ISSET(AUTOINDENT) && !allblanks)
|
|
openfile->totsize += extra;
|
|
update_undo(ENTER);
|
|
#endif
|
|
|
|
refresh_needed = TRUE;
|
|
focusing = FALSE;
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
/* Discard undo items that are newer than the given one, or all if NULL. */
|
|
void discard_until(const undostruct *thisitem)
|
|
{
|
|
undostruct *dropit = openfile->undotop;
|
|
groupstruct *group;
|
|
|
|
while (dropit != NULL && dropit != thisitem) {
|
|
openfile->undotop = dropit->next;
|
|
free(dropit->strdata);
|
|
free_lines(dropit->cutbuffer);
|
|
group = dropit->grouping;
|
|
while (group != NULL) {
|
|
groupstruct *next = group->next;
|
|
free_chararray(group->indentations,
|
|
group->bottom_line - group->top_line + 1);
|
|
free(group);
|
|
group = next;
|
|
}
|
|
free(dropit);
|
|
dropit = openfile->undotop;
|
|
}
|
|
|
|
/* Adjust the pointer to the top of the undo stack. */
|
|
openfile->current_undo = (undostruct *)thisitem;
|
|
|
|
/* Prevent a chain of editing actions from continuing. */
|
|
openfile->last_action = OTHER;
|
|
}
|
|
|
|
/* Add a new undo item of the given type to the top of the current pile. */
|
|
void add_undo(undo_type action, const char *message)
|
|
{
|
|
undostruct *u = nmalloc(sizeof(undostruct));
|
|
linestruct *thisline = openfile->current;
|
|
|
|
/* Initialize the newly allocated undo item. */
|
|
u->type = action;
|
|
u->strdata = NULL;
|
|
u->cutbuffer = NULL;
|
|
u->head_lineno = thisline->lineno;
|
|
u->head_x = openfile->current_x;
|
|
u->tail_lineno = thisline->lineno;
|
|
u->tail_x = openfile->current_x;
|
|
u->wassize = openfile->totsize;
|
|
u->newsize = openfile->totsize;
|
|
u->grouping = NULL;
|
|
u->xflags = 0;
|
|
|
|
/* Blow away any undone items. */
|
|
discard_until(openfile->current_undo);
|
|
|
|
#ifdef ENABLE_WRAPPING
|
|
/* If some action caused automatic long-line wrapping, insert the
|
|
* SPLIT_BEGIN item underneath that action's undo item. Otherwise,
|
|
* just add the new item to the top of the undo stack. */
|
|
if (u->type == SPLIT_BEGIN) {
|
|
action = openfile->undotop->type;
|
|
u->wassize = openfile->undotop->wassize;
|
|
u->next = openfile->undotop->next;
|
|
openfile->undotop->next = u;
|
|
} else
|
|
#endif
|
|
{
|
|
u->next = openfile->undotop;
|
|
openfile->undotop = u;
|
|
openfile->current_undo = u;
|
|
}
|
|
|
|
/* Record the info needed to be able to undo each possible action. */
|
|
switch (u->type) {
|
|
case ADD:
|
|
/* If a new magic line will be added, an undo should remove it. */
|
|
if (thisline == openfile->filebot)
|
|
u->xflags |= INCLUDED_LAST_LINE;
|
|
break;
|
|
case ENTER:
|
|
break;
|
|
case BACK:
|
|
/* If the next line is the magic line, don't ever undo this
|
|
* backspace, as it won't actually have deleted anything. */
|
|
if (thisline->next == openfile->filebot && thisline->data[0] != '\0')
|
|
u->xflags |= WAS_BACKSPACE_AT_EOF;
|
|
/* Fall-through. */
|
|
case DEL:
|
|
/* When not at the end of a line, store the deleted character;
|
|
* otherwise, morph the undo item into a line join. */
|
|
if (thisline->data[openfile->current_x] != '\0') {
|
|
int charlen = char_length(thisline->data + u->head_x);
|
|
|
|
u->strdata = measured_copy(thisline->data + u->head_x, charlen);
|
|
if (u->type == BACK)
|
|
u->tail_x += charlen;
|
|
break;
|
|
}
|
|
action = JOIN;
|
|
if (thisline->next != NULL) {
|
|
if (u->type == BACK) {
|
|
u->head_lineno = thisline->next->lineno;
|
|
u->head_x = 0;
|
|
}
|
|
u->strdata = copy_of(thisline->next->data);
|
|
}
|
|
u->type = JOIN;
|
|
break;
|
|
case REPLACE:
|
|
u->strdata = copy_of(thisline->data);
|
|
if (thisline == openfile->filebot && answer[0] != '\0')
|
|
u->xflags |= INCLUDED_LAST_LINE;
|
|
break;
|
|
#ifdef ENABLE_WRAPPING
|
|
case SPLIT_BEGIN:
|
|
case SPLIT_END:
|
|
break;
|
|
#endif
|
|
case CUT_TO_EOF:
|
|
u->xflags |= (INCLUDED_LAST_LINE | CURSOR_WAS_AT_HEAD);
|
|
if (openfile->current->has_anchor)
|
|
u->xflags |= HAD_ANCHOR_AT_START;
|
|
break;
|
|
case ZAP:
|
|
case CUT:
|
|
if (openfile->mark) {
|
|
if (mark_is_before_cursor()){
|
|
u->head_lineno = openfile->mark->lineno;
|
|
u->head_x = openfile->mark_x;
|
|
u->xflags |= MARK_WAS_SET;
|
|
} else {
|
|
u->tail_lineno = openfile->mark->lineno;
|
|
u->tail_x = openfile->mark_x;
|
|
u->xflags |= (MARK_WAS_SET | CURSOR_WAS_AT_HEAD);
|
|
}
|
|
if (u->tail_lineno == openfile->filebot->lineno)
|
|
u->xflags |= INCLUDED_LAST_LINE;
|
|
} else if (!ISSET(CUT_FROM_CURSOR)) {
|
|
/* The entire line is being cut regardless of the cursor position. */
|
|
u->xflags |= (WAS_WHOLE_LINE | CURSOR_WAS_AT_HEAD);
|
|
u->tail_x = 0;
|
|
} else
|
|
u->xflags |= CURSOR_WAS_AT_HEAD;
|
|
if ((openfile->mark && mark_is_before_cursor() && openfile->mark->has_anchor) ||
|
|
((!openfile->mark || !mark_is_before_cursor()) && openfile->current->has_anchor))
|
|
u->xflags |= HAD_ANCHOR_AT_START;
|
|
break;
|
|
case PASTE:
|
|
u->cutbuffer = copy_buffer(cutbuffer);
|
|
/* Fall-through. */
|
|
case INSERT:
|
|
if (thisline == openfile->filebot)
|
|
u->xflags |= INCLUDED_LAST_LINE;
|
|
break;
|
|
case COUPLE_BEGIN:
|
|
u->tail_lineno = openfile->current_y;
|
|
/* Fall-through. */
|
|
case COUPLE_END:
|
|
u->strdata = copy_of(_(message));
|
|
break;
|
|
case INDENT:
|
|
case UNINDENT:
|
|
#ifdef ENABLE_COMMENT
|
|
case COMMENT:
|
|
case UNCOMMENT:
|
|
#endif
|
|
break;
|
|
default:
|
|
die("Bad undo type -- please report a bug\n");
|
|
}
|
|
|
|
openfile->last_action = action;
|
|
}
|
|
|
|
/* Update a multiline undo item. This should be called once for each line
|
|
* affected by a multiple-line-altering feature. The indentation that is
|
|
* added or removed is saved separately for each line in the undo item. */
|
|
void update_multiline_undo(ssize_t lineno, char *indentation)
|
|
{
|
|
undostruct *u = openfile->current_undo;
|
|
|
|
/* If there already is a group and the current line is contiguous with it,
|
|
* extend the group; otherwise, create a new group. */
|
|
if (u->grouping && u->grouping->bottom_line + 1 == lineno) {
|
|
size_t number_of_lines = lineno - u->grouping->top_line + 1;
|
|
|
|
u->grouping->bottom_line = lineno;
|
|
|
|
u->grouping->indentations = nrealloc(u->grouping->indentations,
|
|
number_of_lines * sizeof(char *));
|
|
u->grouping->indentations[number_of_lines - 1] = copy_of(indentation);
|
|
} else {
|
|
groupstruct *born = nmalloc(sizeof(groupstruct));
|
|
|
|
born->top_line = lineno;
|
|
born->bottom_line = lineno;
|
|
|
|
born->indentations = nmalloc(sizeof(char *));
|
|
born->indentations[0] = copy_of(indentation);
|
|
|
|
born->next = u->grouping;
|
|
u->grouping = born;
|
|
}
|
|
|
|
/* Store the file size after the change, to be used when redoing. */
|
|
u->newsize = openfile->totsize;
|
|
}
|
|
|
|
/* Update an undo item with (among other things) the file size and
|
|
* cursor position after the given action. */
|
|
void update_undo(undo_type action)
|
|
{
|
|
undostruct *u = openfile->undotop;
|
|
size_t datalen, newlen;
|
|
char *textposition;
|
|
int charlen;
|
|
|
|
if (u->type != action)
|
|
die("Mismatching undo type -- please report a bug\n");
|
|
|
|
u->newsize = openfile->totsize;
|
|
|
|
switch (u->type) {
|
|
case ADD:
|
|
newlen = openfile->current_x - u->head_x;
|
|
u->strdata = nrealloc(u->strdata, newlen + 1);
|
|
strncpy(u->strdata, openfile->current->data + u->head_x, newlen);
|
|
u->strdata[newlen] = '\0';
|
|
u->tail_x = openfile->current_x;
|
|
break;
|
|
case ENTER:
|
|
u->strdata = copy_of(openfile->current->data);
|
|
u->tail_x = openfile->current_x;
|
|
break;
|
|
case BACK:
|
|
case DEL:
|
|
textposition = openfile->current->data + openfile->current_x;
|
|
charlen = char_length(textposition);
|
|
datalen = strlen(u->strdata);
|
|
if (openfile->current_x == u->head_x) {
|
|
/* They deleted more: add removed character after earlier stuff. */
|
|
u->strdata = nrealloc(u->strdata, datalen + charlen + 1);
|
|
strncpy(u->strdata + datalen, textposition, charlen);
|
|
u->strdata[datalen + charlen] = '\0';
|
|
u->tail_x = openfile->current_x;
|
|
} else if (openfile->current_x == u->head_x - charlen) {
|
|
/* They backspaced further: add removed character before earlier. */
|
|
u->strdata = nrealloc(u->strdata, datalen + charlen + 1);
|
|
memmove(u->strdata + charlen, u->strdata, datalen + 1);
|
|
strncpy(u->strdata, textposition, charlen);
|
|
u->head_x = openfile->current_x;
|
|
} else
|
|
/* They deleted *elsewhere* on the line: start a new undo item. */
|
|
add_undo(u->type, NULL);
|
|
break;
|
|
case REPLACE:
|
|
break;
|
|
#ifdef ENABLE_WRAPPING
|
|
case SPLIT_BEGIN:
|
|
case SPLIT_END:
|
|
break;
|
|
#endif
|
|
case ZAP:
|
|
case CUT_TO_EOF:
|
|
case CUT:
|
|
if (u->type == ZAP)
|
|
u->cutbuffer = cutbuffer;
|
|
else if (cutbuffer != NULL) {
|
|
free_lines(u->cutbuffer);
|
|
u->cutbuffer = copy_buffer(cutbuffer);
|
|
}
|
|
if (!(u->xflags & MARK_WAS_SET)) {
|
|
linestruct *bottomline = u->cutbuffer;
|
|
size_t count = 0;
|
|
|
|
/* Find the end of the cut for the undo/redo, using our copy. */
|
|
while (bottomline->next != NULL) {
|
|
bottomline = bottomline->next;
|
|
count++;
|
|
}
|
|
u->tail_lineno = u->head_lineno + count;
|
|
if (ISSET(CUT_FROM_CURSOR) || u->type == CUT_TO_EOF) {
|
|
u->tail_x = strlen(bottomline->data);
|
|
if (count == 0)
|
|
u->tail_x += u->head_x;
|
|
} else if (openfile->current == openfile->filebot && ISSET(NO_NEWLINES))
|
|
u->tail_x = strlen(bottomline->data);
|
|
}
|
|
break;
|
|
case COUPLE_BEGIN:
|
|
break;
|
|
case COUPLE_END:
|
|
case PASTE:
|
|
case INSERT:
|
|
u->tail_lineno = openfile->current->lineno;
|
|
u->tail_x = openfile->current_x;
|
|
break;
|
|
default:
|
|
die("Bad undo type -- please report a bug\n");
|
|
}
|
|
}
|
|
#endif /* !NANO_TINY */
|
|
|
|
#ifdef ENABLE_WRAPPING
|
|
/* When the current line is overlong, hard-wrap it at the furthest possible
|
|
* whitespace character, and prepend the excess part to an "overflow" line
|
|
* (when it already exists, otherwise create one). */
|
|
void do_wrap(void)
|
|
{
|
|
linestruct *line = openfile->current;
|
|
/* The line to be wrapped, if needed and possible. */
|
|
size_t line_len = strlen(line->data);
|
|
/* The length of this line. */
|
|
#ifdef ENABLE_JUSTIFY
|
|
size_t quot_len = quote_length(line->data);
|
|
/* The length of the quoting part of this line. */
|
|
size_t lead_len = quot_len + indent_length(line->data + quot_len);
|
|
/* The length of the quoting part plus subsequent whitespace. */
|
|
#else
|
|
size_t lead_len = indent_length(line->data);
|
|
#endif
|
|
size_t cursor_x = openfile->current_x;
|
|
/* The current cursor position, for comparison with the wrap point. */
|
|
ssize_t wrap_loc;
|
|
/* The position in the line's text where we wrap. */
|
|
const char *remainder;
|
|
/* The text after the wrap point. */
|
|
size_t rest_length;
|
|
/* The length of the remainder. */
|
|
|
|
/* First find the last blank character where we can break the line. */
|
|
wrap_loc = break_line(line->data + lead_len,
|
|
wrap_at - wideness(line->data, lead_len), FALSE);
|
|
|
|
/* If no wrapping point was found before end-of-line, we don't wrap. */
|
|
if (wrap_loc < 0 || lead_len + wrap_loc == line_len)
|
|
return;
|
|
|
|
/* Adjust the wrap location to its position in the full line,
|
|
* and step forward to the character just after the blank. */
|
|
wrap_loc = lead_len + step_right(line->data + lead_len, wrap_loc);
|
|
|
|
/* When now at end-of-line, no need to wrap. */
|
|
if (line->data[wrap_loc] == '\0')
|
|
return;
|
|
|
|
#ifndef NANO_TINY
|
|
add_undo(SPLIT_BEGIN, NULL);
|
|
#endif
|
|
#ifdef ENABLE_JUSTIFY
|
|
bool autowhite = ISSET(AUTOINDENT);
|
|
|
|
if (quot_len > 0)
|
|
UNSET(AUTOINDENT);
|
|
#endif
|
|
|
|
/* The remainder is the text that will be wrapped to the next line. */
|
|
remainder = line->data + wrap_loc;
|
|
rest_length = line_len - wrap_loc;
|
|
|
|
/* When prepending and the remainder of this line will not make the next
|
|
* line too long, then join the two lines, so that, after the line wrap,
|
|
* the remainder will effectively have been prefixed to the next line. */
|
|
if (openfile->spillage_line && openfile->spillage_line == line->next &&
|
|
rest_length + breadth(line->next->data) <= wrap_at) {
|
|
/* Go to the end of this line. */
|
|
openfile->current_x = line_len;
|
|
|
|
/* If the remainder doesn't end in a blank, add a space. */
|
|
if (!is_blank_char(remainder + step_left(remainder, rest_length))) {
|
|
#ifndef NANO_TINY
|
|
add_undo(ADD, NULL);
|
|
#endif
|
|
line->data = nrealloc(line->data, line_len + 2);
|
|
line->data[line_len] = ' ';
|
|
line->data[line_len + 1] = '\0';
|
|
rest_length++;
|
|
openfile->totsize++;
|
|
openfile->current_x++;
|
|
#ifndef NANO_TINY
|
|
update_undo(ADD);
|
|
#endif
|
|
}
|
|
|
|
/* Join the next line to this one. */
|
|
do_delete();
|
|
|
|
#ifdef ENABLE_JUSTIFY
|
|
/* If the leading part of the current line equals the leading part of
|
|
* what was the next line, then strip this second leading part. */
|
|
if (strncmp(line->data, line->data + openfile->current_x, lead_len) == 0)
|
|
for (size_t i = lead_len; i > 0; i--)
|
|
do_delete();
|
|
#endif
|
|
/* Remove any extra blanks. */
|
|
while (is_blank_char(&line->data[openfile->current_x]))
|
|
do_delete();
|
|
}
|
|
|
|
/* Go to the wrap location. */
|
|
openfile->current_x = wrap_loc;
|
|
|
|
/* When requested, snip trailing blanks off the wrapped line. */
|
|
if (ISSET(TRIM_BLANKS)) {
|
|
size_t rear_x = step_left(line->data, wrap_loc);
|
|
size_t typed_x = step_left(line->data, cursor_x);
|
|
|
|
while ((rear_x != typed_x || cursor_x >= wrap_loc) &&
|
|
is_blank_char(line->data + rear_x)) {
|
|
openfile->current_x = rear_x;
|
|
do_delete();
|
|
rear_x = step_left(line->data, rear_x);
|
|
}
|
|
}
|
|
|
|
/* Now split the line. */
|
|
do_enter();
|
|
|
|
#ifdef ENABLE_JUSTIFY
|
|
/* If the original line has quoting, copy it to the spillage line. */
|
|
if (quot_len > 0) {
|
|
line = line->next;
|
|
line_len = strlen(line->data);
|
|
line->data = nrealloc(line->data, lead_len + line_len + 1);
|
|
|
|
memmove(line->data + lead_len, line->data, line_len + 1);
|
|
strncpy(line->data, line->prev->data, lead_len);
|
|
|
|
openfile->current_x += lead_len;
|
|
openfile->totsize += lead_len;
|
|
#ifndef NANO_TINY
|
|
free(openfile->undotop->strdata);
|
|
update_undo(ENTER);
|
|
#endif
|
|
if (autowhite)
|
|
SET(AUTOINDENT);
|
|
}
|
|
#endif
|
|
|
|
openfile->spillage_line = openfile->current;
|
|
|
|
if (cursor_x < wrap_loc) {
|
|
openfile->current = openfile->current->prev;
|
|
openfile->current_x = cursor_x;
|
|
} else
|
|
openfile->current_x += (cursor_x - wrap_loc);
|
|
|
|
openfile->placewewant = xplustabs();
|
|
|
|
#ifndef NANO_TINY
|
|
add_undo(SPLIT_END, NULL);
|
|
#endif
|
|
|
|
refresh_needed = TRUE;
|
|
}
|
|
#endif /* ENABLE_WRAPPING */
|
|
|
|
#if defined(ENABLE_HELP) || defined(ENABLED_WRAPORJUSTIFY)
|
|
/* Find the last blank in the given piece of text such that the display width
|
|
* to that point is at most (goal + 1). When there is no such blank, then find
|
|
* the first blank. Return the index of the last blank in that group of blanks.
|
|
* When snap_at_nl is TRUE, a newline character counts as a blank too. */
|
|
ssize_t break_line(const char *textstart, ssize_t goal, bool snap_at_nl)
|
|
{
|
|
const char *lastblank = NULL;
|
|
/* The point where the last blank was found, if any. */
|
|
const char *pointer = textstart;
|
|
/* An iterator through the given line of text. */
|
|
size_t column = 0;
|
|
/* The column number that corresponds to the position of the pointer. */
|
|
|
|
/* Skip over leading whitespace, where a line should never be broken. */
|
|
while (*pointer != '\0' && is_blank_char(pointer))
|
|
pointer += advance_over(pointer, &column);
|
|
|
|
/* Find the last blank that does not overshoot the target column.
|
|
* When treating a help text, do not break in the keystrokes area. */
|
|
while (*pointer != '\0' && ((ssize_t)column <= goal)) {
|
|
if (is_blank_char(pointer) && (!inhelp || column > 17 || goal < 40))
|
|
lastblank = pointer;
|
|
#ifdef ENABLE_HELP
|
|
else if (snap_at_nl && *pointer == '\n') {
|
|
lastblank = pointer;
|
|
break;
|
|
}
|
|
#endif
|
|
pointer += advance_over(pointer, &column);
|
|
}
|
|
|
|
/* If the whole line displays shorter than goal, we're done. */
|
|
if ((ssize_t)column <= goal)
|
|
return (pointer - textstart);
|
|
|
|
#ifdef ENABLE_HELP
|
|
/* When wrapping a help text and no blank was found, force a line break. */
|
|
if (snap_at_nl && lastblank == NULL)
|
|
return step_left(textstart, pointer - textstart);
|
|
#endif
|
|
|
|
/* If no blank was found within the goal width, seek one after it. */
|
|
while (lastblank == NULL) {
|
|
if (*pointer == '\0')
|
|
return -1;
|
|
|
|
if (is_blank_char(pointer))
|
|
lastblank = pointer;
|
|
else
|
|
pointer += char_length(pointer);
|
|
}
|
|
|
|
pointer = lastblank + char_length(lastblank);
|
|
|
|
/* Skip any consecutive blanks after the last blank. */
|
|
while (*pointer != '\0' && is_blank_char(pointer)) {
|
|
lastblank = pointer;
|
|
pointer += char_length(pointer);
|
|
}
|
|
|
|
return (lastblank - textstart);
|
|
}
|
|
#endif /* ENABLE_HELP || ENABLED_WRAPORJUSTIFY */
|
|
|
|
#if !defined(NANO_TINY) || defined(ENABLED_WRAPORJUSTIFY)
|
|
/* Return the length of the indentation part of the given line. The
|
|
* "indentation" of a line is the leading consecutive whitespace. */
|
|
size_t indent_length(const char *line)
|
|
{
|
|
const char *start = line;
|
|
|
|
while (*line != '\0' && is_blank_char(line))
|
|
line += char_length(line);
|
|
|
|
return (line - start);
|
|
}
|
|
#endif
|
|
|
|
#ifdef ENABLE_JUSTIFY
|
|
/* Return the length of the quote part of the given line. The "quote part"
|
|
* of a line is the largest initial substring matching the quoting regex. */
|
|
size_t quote_length(const char *line)
|
|
{
|
|
regmatch_t matches;
|
|
int rc = regexec("ereg, line, 1, &matches, 0);
|
|
|
|
if (rc == REG_NOMATCH || matches.rm_so == (regoff_t)-1)
|
|
return 0;
|
|
|
|
return matches.rm_eo;
|
|
}
|
|
|
|
/* The maximum depth of recursion. This must be an even number. */
|
|
#define RECURSION_LIMIT 222
|
|
|
|
/* Return TRUE when the given line is the beginning of a paragraph (BOP). */
|
|
bool begpar(const linestruct *const line, int depth)
|
|
{
|
|
size_t quot_len, indent_len, prev_dent_len;
|
|
|
|
/* The very first line counts as a BOP, even when it contains no text. */
|
|
if (line->prev == NULL)
|
|
return TRUE;
|
|
|
|
/* If recursion is going too deep, just say it's not a BOP. */
|
|
if (depth > RECURSION_LIMIT)
|
|
return FALSE;
|
|
|
|
quot_len = quote_length(line->data);
|
|
indent_len = indent_length(line->data + quot_len);
|
|
|
|
/* If this line contains no text, it is not a BOP. */
|
|
if (line->data[quot_len + indent_len] == '\0')
|
|
return FALSE;
|
|
|
|
/* When requested, treat a line that starts with whitespace as a BOP. */
|
|
if (ISSET(BOOKSTYLE) && !ISSET(AUTOINDENT) && is_blank_char(line->data))
|
|
return TRUE;
|
|
|
|
/* If the quote part of the preceding line differs, this is a BOP. */
|
|
if (quot_len != quote_length(line->prev->data) ||
|
|
strncmp(line->data, line->prev->data, quot_len) != 0)
|
|
return TRUE;
|
|
|
|
prev_dent_len = indent_length(line->prev->data + quot_len);
|
|
|
|
/* If the preceding line contains no text, this is a BOP. */
|
|
if (line->prev->data[quot_len + prev_dent_len] == '\0')
|
|
return TRUE;
|
|
|
|
/* If indentation of this and preceding line are equal, this is not a BOP. */
|
|
if (wideness(line->prev->data, quot_len + prev_dent_len) ==
|
|
wideness(line->data, quot_len + indent_len))
|
|
return FALSE;
|
|
|
|
/* Otherwise, this is a BOP if the preceding line is not. */
|
|
return !begpar(line->prev, depth + 1);
|
|
}
|
|
|
|
/* Return TRUE when the given line is part of a paragraph: when it
|
|
* contains something more than quoting and leading whitespace. */
|
|
bool inpar(const linestruct *const line)
|
|
{
|
|
size_t quot_len = quote_length(line->data);
|
|
size_t indent_len = indent_length(line->data + quot_len);
|
|
|
|
return (line->data[quot_len + indent_len] != '\0');
|
|
}
|
|
|
|
/* Find the first occurring paragraph in the forward direction. Return TRUE
|
|
* when a paragraph was found, and FALSE otherwise. Furthermore, return the
|
|
* first line and the number of lines of the paragraph. */
|
|
bool find_paragraph(linestruct **firstline, size_t *const linecount)
|
|
{
|
|
linestruct *line = *firstline;
|
|
|
|
/* When not currently in a paragraph, move forward to a line that is. */
|
|
while (!inpar(line) && line->next != NULL)
|
|
line = line->next;
|
|
|
|
*firstline = line;
|
|
|
|
/* Move down to the last line of the paragraph (if any). */
|
|
do_para_end(&line);
|
|
|
|
/* When not in a paragraph now, there aren't any paragraphs left. */
|
|
if (!inpar(line))
|
|
return FALSE;
|
|
|
|
/* We found a paragraph; determine its number of lines. */
|
|
*linecount = line->lineno - (*firstline)->lineno + 1;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Concatenate into a single line all the lines of the paragraph that starts at
|
|
* *line and consists of 'count' lines, skipping the quoting and indentation on
|
|
* all lines after the first. */
|
|
void concat_paragraph(linestruct *line, size_t count)
|
|
{
|
|
while (count > 1) {
|
|
linestruct *next_line = line->next;
|
|
size_t next_line_len = strlen(next_line->data);
|
|
size_t next_quot_len = quote_length(next_line->data);
|
|
size_t next_lead_len = next_quot_len +
|
|
indent_length(next_line->data + next_quot_len);
|
|
size_t line_len = strlen(line->data);
|
|
|
|
/* We're just about to tack the next line onto this one. If
|
|
* this line isn't empty, make sure it ends in a space. */
|
|
if (line_len > 0 && line->data[line_len - 1] != ' ') {
|
|
line->data = nrealloc(line->data, line_len + 2);
|
|
line->data[line_len++] = ' ';
|
|
line->data[line_len] = '\0';
|
|
}
|
|
|
|
line->data = nrealloc(line->data,
|
|
line_len + next_line_len - next_lead_len + 1);
|
|
strcat(line->data, next_line->data + next_lead_len);
|
|
#ifndef NANO_TINY
|
|
line->has_anchor |= next_line->has_anchor;
|
|
#endif
|
|
unlink_node(next_line);
|
|
count--;
|
|
}
|
|
}
|
|
|
|
/* Copy a character from one place to another. */
|
|
void copy_character(char **from, char **to)
|
|
{
|
|
int charlen = char_length(*from);
|
|
|
|
if (*from == *to) {
|
|
*from += charlen;
|
|
*to += charlen;
|
|
} else
|
|
while (--charlen >= 0)
|
|
*((*to)++) = *((*from)++);
|
|
}
|
|
|
|
/* In the given line, replace any series of blanks with a single space,
|
|
* but keep two spaces (if there are two) after any closing punctuation,
|
|
* and remove all blanks from the end of the line. Leave the first skip
|
|
* number of characters untreated. */
|
|
void squeeze(linestruct *line, size_t skip)
|
|
{
|
|
char *start = line->data + skip;
|
|
char *from = start, *to = start;
|
|
|
|
/* For each character, 1) when a blank, change it to a space, and pass over
|
|
* all blanks after it; 2) if it is punctuation, copy it plus a possible
|
|
* tailing bracket, and change at most two subsequent blanks to spaces, and
|
|
* pass over all blanks after these; 3) leave anything else unchanged. */
|
|
while (*from != '\0') {
|
|
if (is_blank_char(from)) {
|
|
from += char_length(from);
|
|
*(to++) = ' ';
|
|
|
|
while (*from != '\0' && is_blank_char(from))
|
|
from += char_length(from);
|
|
} else if (mbstrchr(punct, from) != NULL) {
|
|
copy_character(&from, &to);
|
|
|
|
if (*from != '\0' && mbstrchr(brackets, from) != NULL)
|
|
copy_character(&from, &to);
|
|
|
|
if (*from != '\0' && is_blank_char(from)) {
|
|
from += char_length(from);
|
|
*(to++) = ' ';
|
|
}
|
|
if (*from != '\0' && is_blank_char(from)) {
|
|
from += char_length(from);
|
|
*(to++) = ' ';
|
|
}
|
|
|
|
while (*from != '\0' && is_blank_char(from))
|
|
from += char_length(from);
|
|
} else
|
|
copy_character(&from, &to);
|
|
}
|
|
|
|
/* If there are spaces at the end of the line, remove them. */
|
|
while (to > start && *(to - 1) == ' ')
|
|
to--;
|
|
|
|
*to = '\0';
|
|
}
|
|
|
|
/* Rewrap the given line (that starts with the given lead string which is of
|
|
* the given length), into lines that fit within the target width (wrap_at). */
|
|
void rewrap_paragraph(linestruct **line, char *lead_string, size_t lead_len)
|
|
{
|
|
ssize_t break_pos;
|
|
/* The x-coordinate where the current line is to be broken. */
|
|
|
|
while (breadth((*line)->data) > wrap_at) {
|
|
size_t line_len = strlen((*line)->data);
|
|
|
|
/* Find a point in the line where it can be broken. */
|
|
break_pos = break_line((*line)->data + lead_len,
|
|
wrap_at - wideness((*line)->data, lead_len), FALSE);
|
|
|
|
/* If we can't break the line, or don't need to, we're done. */
|
|
if (break_pos < 0 || lead_len + break_pos == line_len)
|
|
break;
|
|
|
|
/* Adjust the breaking position for the leading part and
|
|
* move it beyond the found whitespace character. */
|
|
break_pos += lead_len + 1;
|
|
|
|
/* Insert a new line after the current one, and copy the leading part
|
|
* plus the text after the breaking point into it. */
|
|
splice_node(*line, make_new_node(*line));
|
|
(*line)->next->data = nmalloc(lead_len + line_len - break_pos + 1);
|
|
strncpy((*line)->next->data, lead_string, lead_len);
|
|
strcpy((*line)->next->data + lead_len, (*line)->data + break_pos);
|
|
|
|
/* When requested, snip the one or two trailing spaces. */
|
|
if (ISSET(TRIM_BLANKS)) {
|
|
while (break_pos > 0 && (*line)->data[break_pos - 1] == ' ')
|
|
break_pos--;
|
|
}
|
|
|
|
/* Now actually break the current line, and go to the next. */
|
|
(*line)->data[break_pos] = '\0';
|
|
*line = (*line)->next;
|
|
}
|
|
|
|
/* When possible, go to the line after the rewrapped paragraph. */
|
|
if ((*line)->next != NULL)
|
|
*line = (*line)->next;
|
|
}
|
|
|
|
/* Justify the lines of the given paragraph (that starts at *line, and consists
|
|
* of 'count' lines) so they all fit within the target width (wrap_at) and have
|
|
* their whitespace normalized. */
|
|
void justify_paragraph(linestruct **line, size_t count)
|
|
{
|
|
linestruct *sampleline;
|
|
/* The line from which the indentation is copied. */
|
|
size_t quot_len;
|
|
/* Length of the quote part. */
|
|
size_t lead_len;
|
|
/* Length of the quote part plus the indentation part. */
|
|
char *lead_string;
|
|
/* The quote+indent stuff that is copied from the sample line. */
|
|
|
|
/* The sample line is either the only line or the second line. */
|
|
sampleline = (count == 1 ? *line : (*line)->next);
|
|
|
|
/* Copy the leading part (quoting + indentation) of the sample line. */
|
|
quot_len = quote_length(sampleline->data);
|
|
lead_len = quot_len + indent_length(sampleline->data + quot_len);
|
|
lead_string = measured_copy(sampleline->data, lead_len);
|
|
|
|
/* Concatenate all lines of the paragraph into a single line. */
|
|
concat_paragraph(*line, count);
|
|
|
|
/* Change all blank characters to spaces and remove excess spaces. */
|
|
squeeze(*line, quot_len + indent_length((*line)->data + quot_len));
|
|
|
|
/* Rewrap the line into multiple lines, accounting for the leading part. */
|
|
rewrap_paragraph(line, lead_string, lead_len);
|
|
|
|
free(lead_string);
|
|
}
|
|
|
|
#define ONE_PARAGRAPH FALSE
|
|
#define WHOLE_BUFFER TRUE
|
|
|
|
/* Justify the current paragraph, or the entire buffer when whole_buffer is
|
|
* TRUE. But if the mark is on, justify only the marked text instead. */
|
|
void justify_text(bool whole_buffer)
|
|
{
|
|
size_t linecount;
|
|
/* The number of lines in the original paragraph. */
|
|
linestruct *startline;
|
|
/* The line where the paragraph or region starts. */
|
|
linestruct *endline;
|
|
/* The line where the paragraph or region ends. */
|
|
size_t start_x;
|
|
/* The x position where the paragraph or region starts. */
|
|
size_t end_x;
|
|
/* The x position where the paragraph or region ends. */
|
|
linestruct *was_cutbuffer = cutbuffer;
|
|
/* The old cutbuffer, so we can justify in the current cutbuffer. */
|
|
linestruct *jusline;
|
|
/* The line that we're justifying in the current cutbuffer. */
|
|
#ifndef NANO_TINY
|
|
bool before_eol = FALSE;
|
|
/* Whether the end of a marked region is before the end of its line. */
|
|
char *primary_lead = NULL;
|
|
/* The leading part (quoting + indentation) of the first line
|
|
* of the paragraph where the marked region begins. */
|
|
size_t primary_len = 0;
|
|
/* The length (in bytes) of the above first-line leading part. */
|
|
char *secondary_lead = NULL;
|
|
/* The leading part for lines after the first one. */
|
|
size_t secondary_len = 0;
|
|
/* The length of that later lead. */
|
|
|
|
/* TRANSLATORS: This one goes with Undid/Redid messages. */
|
|
add_undo(COUPLE_BEGIN, N_("justification"));
|
|
|
|
/* If the mark is on, do as Pico: treat all marked text as one paragraph. */
|
|
if (openfile->mark) {
|
|
size_t quot_len, fore_len, other_quot_len, other_white_len;
|
|
linestruct *sampleline;
|
|
|
|
get_region(&startline, &start_x, &endline, &end_x);
|
|
|
|
/* When the marked region is empty, do nothing. */
|
|
if (startline == endline && start_x == end_x) {
|
|
statusline(AHEM, _("Selection is empty"));
|
|
discard_until(openfile->undotop->next);
|
|
return;
|
|
}
|
|
|
|
quot_len = quote_length(startline->data);
|
|
fore_len = quot_len + indent_length(startline->data + quot_len);
|
|
|
|
/* When the region starts IN the lead, take the whole lead. */
|
|
if (start_x <= fore_len)
|
|
start_x = 0;
|
|
|
|
/* Recede over blanks before the region. This effectively snips
|
|
* trailing blanks from what will become the preceding paragraph. */
|
|
while (start_x > 0 && is_blank_char(&startline->data[start_x - 1]))
|
|
start_x = step_left(startline->data, start_x);
|
|
|
|
quot_len = quote_length(endline->data);
|
|
fore_len = quot_len + indent_length(endline->data + quot_len);
|
|
|
|
/* When the region ends IN the lead, take the whole lead. */
|
|
if (0 < end_x && end_x < fore_len)
|
|
end_x = fore_len;
|
|
|
|
/* When not at the left edge, advance over blanks after the region. */
|
|
while (end_x > 0 && is_blank_char(&endline->data[end_x]))
|
|
end_x = step_right(endline->data, end_x);
|
|
|
|
sampleline = startline;
|
|
|
|
/* Find the first line of the paragraph in which the region starts. */
|
|
while (sampleline->prev && inpar(sampleline) && !begpar(sampleline, 0))
|
|
sampleline = sampleline->prev;
|
|
|
|
/* Ignore lines that contain no text. */
|
|
while (sampleline->next && !inpar(sampleline))
|
|
sampleline = sampleline->next;
|
|
|
|
/* Store the leading part that is to be used for the new paragraph. */
|
|
quot_len = quote_length(sampleline->data);
|
|
primary_len = quot_len + indent_length(sampleline->data + quot_len);
|
|
primary_lead = measured_copy(sampleline->data, primary_len);
|
|
|
|
if (sampleline->next && startline != endline)
|
|
sampleline = sampleline->next;
|
|
|
|
/* Copy the leading part that is to be used for the new paragraph after
|
|
* its first line (if any): the quoting of the first line, plus the
|
|
* indentation of the second line. */
|
|
other_quot_len = quote_length(sampleline->data);
|
|
other_white_len = indent_length(sampleline->data + other_quot_len);
|
|
|
|
secondary_len = quot_len + other_white_len;
|
|
secondary_lead = nmalloc(secondary_len + 1);
|
|
|
|
strncpy(secondary_lead, startline->data, quot_len);
|
|
strncpy(secondary_lead + quot_len, sampleline->data + other_quot_len,
|
|
other_white_len);
|
|
secondary_lead[secondary_len] = '\0';
|
|
|
|
/* Include preceding and succeeding leads into the marked region. */
|
|
openfile->mark = startline;
|
|
openfile->mark_x = start_x;
|
|
openfile->current = endline;
|
|
openfile->current_x = end_x;
|
|
|
|
linecount = endline->lineno - startline->lineno + (end_x > 0 ? 1 : 0);
|
|
|
|
/* Remember whether the end of the region was before the end-of-line. */
|
|
before_eol = endline->data[end_x] != '\0';
|
|
} else
|
|
#endif /* NANO_TINY */
|
|
{
|
|
/* When justifying the entire buffer, start at the top. Otherwise, when
|
|
* in a paragraph but not at its beginning, move back to its first line. */
|
|
if (whole_buffer)
|
|
openfile->current = openfile->filetop;
|
|
else if (inpar(openfile->current) && !begpar(openfile->current, 0))
|
|
do_para_begin(&openfile->current);
|
|
|
|
/* Find the first line of the paragraph(s) to be justified. If the
|
|
* search fails, there is nothing to justify, and we will be on the
|
|
* last line of the file, so put the cursor at the end of it. */
|
|
if (!find_paragraph(&openfile->current, &linecount)) {
|
|
openfile->current_x = strlen(openfile->filebot->data);
|
|
#ifndef NANO_TINY
|
|
discard_until(openfile->undotop->next);
|
|
#endif
|
|
refresh_needed = TRUE;
|
|
return;
|
|
}
|
|
|
|
/* Set the starting point of the paragraph. */
|
|
startline = openfile->current;
|
|
start_x = 0;
|
|
|
|
/* Set the end point of the paragraph. */
|
|
if (whole_buffer)
|
|
endline = openfile->filebot;
|
|
else {
|
|
endline = startline;
|
|
for (size_t count = linecount; count > 1; count--)
|
|
endline = endline->next;
|
|
}
|
|
|
|
/* When possible, step one line further; otherwise, to line's end. */
|
|
if (endline->next != NULL) {
|
|
endline = endline->next;
|
|
end_x = 0;
|
|
} else
|
|
end_x = strlen(endline->data);
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
add_undo(CUT, NULL);
|
|
#endif
|
|
/* Do the equivalent of a marked cut into an empty cutbuffer. */
|
|
cutbuffer = NULL;
|
|
extract_segment(startline, start_x, endline, end_x);
|
|
#ifndef NANO_TINY
|
|
update_undo(CUT);
|
|
|
|
if (openfile->mark) {
|
|
linestruct *line = cutbuffer;
|
|
size_t quot_len = quote_length(line->data);
|
|
size_t fore_len = quot_len + indent_length(line->data + quot_len);
|
|
size_t text_len = strlen(line->data) - fore_len;
|
|
|
|
/* If the extracted region begins with any leading part, trim it. */
|
|
if (fore_len > 0)
|
|
memmove(line->data, line->data + fore_len, text_len + 1);
|
|
|
|
/* Then copy back in the leading part that it should have. */
|
|
if (primary_len > 0) {
|
|
line->data = nrealloc(line->data, primary_len + text_len + 1);
|
|
memmove(line->data + primary_len, line->data, text_len + 1);
|
|
strncpy(line->data, primary_lead, primary_len);
|
|
}
|
|
|
|
/* Now justify the extracted region. */
|
|
concat_paragraph(cutbuffer, linecount);
|
|
squeeze(cutbuffer, primary_len);
|
|
rewrap_paragraph(&line, secondary_lead, secondary_len);
|
|
|
|
/* If the marked region started in the middle of a line,
|
|
* insert a newline before the new paragraph. */
|
|
if (start_x > 0) {
|
|
cutbuffer->prev = make_new_node(NULL);
|
|
cutbuffer->prev->data = copy_of("");
|
|
cutbuffer->prev->next = cutbuffer;
|
|
cutbuffer = cutbuffer->prev;
|
|
}
|
|
|
|
/* If the marked region ended in the middle of a line,
|
|
* insert a newline after the new paragraph. */
|
|
if (end_x > 0 && before_eol) {
|
|
line->next = make_new_node(line);
|
|
line->next->data = copy_of(primary_lead);
|
|
}
|
|
|
|
free(secondary_lead);
|
|
free(primary_lead);
|
|
} else
|
|
#endif
|
|
{
|
|
/* Prepare to justify the text we just put in the cutbuffer. */
|
|
jusline = cutbuffer;
|
|
|
|
/* Justify the current paragraph. */
|
|
justify_paragraph(&jusline, linecount);
|
|
|
|
/* When justifying the entire buffer, find and justify all paragraphs. */
|
|
if (whole_buffer) {
|
|
while (find_paragraph(&jusline, &linecount)) {
|
|
justify_paragraph(&jusline, linecount);
|
|
|
|
if (jusline->next == NULL)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
/* Wipe an anchor on the first paragraph if it was only inherited. */
|
|
if (whole_buffer && !openfile->mark && !cutbuffer->has_anchor)
|
|
openfile->current->has_anchor = FALSE;
|
|
|
|
add_undo(PASTE, NULL);
|
|
#endif
|
|
/* Do the equivalent of a paste of the justified text. */
|
|
ingraft_buffer(cutbuffer);
|
|
#ifndef NANO_TINY
|
|
update_undo(PASTE);
|
|
|
|
/* After justifying a backward-marked text, swap mark and cursor. */
|
|
if (openfile->mark && !mark_is_before_cursor()) {
|
|
linestruct *bottom = openfile->current;
|
|
size_t bottom_x = openfile->current_x;
|
|
|
|
openfile->current = openfile->mark;
|
|
openfile->current_x = openfile->mark_x;
|
|
openfile->mark = bottom;
|
|
openfile->mark_x = bottom_x;
|
|
}
|
|
|
|
add_undo(COUPLE_END, N_("justification"));
|
|
|
|
/* Report on the status bar what we justified. */
|
|
if (openfile->mark)
|
|
statusline(REMARK, _("Justified selection"));
|
|
else
|
|
#endif
|
|
if (whole_buffer)
|
|
statusline(REMARK, _("Justified file"));
|
|
else
|
|
statusbar(_("Justified paragraph"));
|
|
|
|
/* We're done justifying. Restore the cutbuffer. */
|
|
cutbuffer = was_cutbuffer;
|
|
|
|
/* Set the desired screen column (always zero, except at EOF). */
|
|
openfile->placewewant = xplustabs();
|
|
|
|
set_modified();
|
|
refresh_needed = TRUE;
|
|
shift_held = TRUE;
|
|
}
|
|
|
|
/* Justify the current paragraph. */
|
|
void do_justify(void)
|
|
{
|
|
justify_text(ONE_PARAGRAPH);
|
|
}
|
|
|
|
/* Justify the entire file. */
|
|
void do_full_justify(void)
|
|
{
|
|
justify_text(WHOLE_BUFFER);
|
|
ran_a_tool = TRUE;
|
|
}
|
|
#endif /* ENABLE_JUSTIFY */
|
|
|
|
#if defined(ENABLE_SPELLER) || defined (ENABLE_COLOR)
|
|
/* Set up an argument list for executing the given command. */
|
|
void construct_argument_list(char ***arguments, char *command, char *filename)
|
|
{
|
|
char *copy_of_command = copy_of(command);
|
|
char *element = strtok(copy_of_command, " ");
|
|
int count = 2;
|
|
|
|
while (element != NULL) {
|
|
*arguments = nrealloc(*arguments, ++count * sizeof(char *));
|
|
(*arguments)[count - 3] = element;
|
|
element = strtok(NULL, " ");
|
|
}
|
|
|
|
(*arguments)[count - 2] = filename;
|
|
(*arguments)[count - 1] = NULL;
|
|
}
|
|
|
|
/* Open the specified file, and if that succeeds, remove the text of the marked
|
|
* region or of the entire buffer and read the file contents into its place. */
|
|
bool replace_buffer(const char *filename, undo_type action, const char *operation)
|
|
{
|
|
linestruct *was_cutbuffer = cutbuffer;
|
|
int descriptor;
|
|
FILE *stream;
|
|
|
|
descriptor = open_file(filename, FALSE, &stream);
|
|
|
|
if (descriptor < 0)
|
|
return FALSE;
|
|
|
|
cutbuffer = NULL;
|
|
|
|
#ifndef NANO_TINY
|
|
add_undo(COUPLE_BEGIN, operation);
|
|
|
|
/* Cut either the marked region or the whole buffer. */
|
|
add_undo(action, NULL);
|
|
do_snip(openfile->mark != NULL, openfile->mark == NULL, FALSE);
|
|
update_undo(action);
|
|
#else
|
|
do_snip(FALSE, TRUE, FALSE);
|
|
#endif
|
|
|
|
/* Discard what was cut. */
|
|
free_lines(cutbuffer);
|
|
cutbuffer = was_cutbuffer;
|
|
|
|
/* Insert the spell-checked file into the cleared area. */
|
|
read_file(stream, descriptor, filename, TRUE);
|
|
|
|
#ifndef NANO_TINY
|
|
add_undo(COUPLE_END, operation);
|
|
#endif
|
|
return TRUE;
|
|
}
|
|
|
|
/* Execute the given program, with the given temp file as last argument. */
|
|
void treat(char *tempfile_name, char *theprogram, bool spelling)
|
|
{
|
|
ssize_t was_lineno = openfile->current->lineno;
|
|
size_t was_pww = openfile->placewewant;
|
|
size_t was_x = openfile->current_x;
|
|
bool was_at_eol = (openfile->current->data[openfile->current_x] == '\0');
|
|
struct stat fileinfo;
|
|
long timestamp_sec = 0;
|
|
long timestamp_nsec = 0;
|
|
static char **arguments = NULL;
|
|
pid_t thepid;
|
|
int program_status, errornumber;
|
|
bool replaced = FALSE;
|
|
|
|
/* Stat the temporary file. If that succeeds and its size is zero,
|
|
* there is nothing to do; otherwise, store its time of modification. */
|
|
if (stat(tempfile_name, &fileinfo) == 0) {
|
|
if (fileinfo.st_size == 0) {
|
|
#ifndef NANO_TINY
|
|
if (spelling && openfile->mark)
|
|
statusline(AHEM, _("Selection is empty"));
|
|
else
|
|
#endif
|
|
statusline(AHEM, _("Buffer is empty"));
|
|
return;
|
|
}
|
|
|
|
timestamp_sec = (long)fileinfo.st_mtim.tv_sec;
|
|
timestamp_nsec = (long)fileinfo.st_mtim.tv_nsec;
|
|
}
|
|
|
|
/* Exit from curses mode to give the program control of the terminal. */
|
|
endwin();
|
|
|
|
construct_argument_list(&arguments, theprogram, tempfile_name);
|
|
|
|
/* Fork a child process and run the given program in it. */
|
|
if ((thepid = fork()) == 0) {
|
|
execvp(arguments[0], arguments);
|
|
|
|
/* Terminate the child if the program is not found. */
|
|
exit(9);
|
|
} else if (thepid > 0) {
|
|
/* Block SIGWINCHes while waiting for the forked program to end,
|
|
* so nano doesn't get pushed past the wait(). */
|
|
block_sigwinch(TRUE);
|
|
wait(&program_status);
|
|
block_sigwinch(FALSE);
|
|
}
|
|
|
|
errornumber = errno;
|
|
|
|
/* Restore the terminal state and reenter curses mode. */
|
|
terminal_init();
|
|
doupdate();
|
|
|
|
if (thepid < 0) {
|
|
statusline(ALERT, _("Could not fork: %s"), strerror(errornumber));
|
|
free(arguments[0]);
|
|
return;
|
|
} else if (!WIFEXITED(program_status) || WEXITSTATUS(program_status) > 2) {
|
|
statusline(ALERT, _("Error invoking '%s'"), arguments[0]);
|
|
free(arguments[0]);
|
|
return;
|
|
} else if (WEXITSTATUS(program_status) != 0)
|
|
statusline(ALERT, _("Program '%s' complained"), arguments[0]);
|
|
|
|
free(arguments[0]);
|
|
|
|
/* When the temporary file wasn't touched, say so and leave. */
|
|
if (timestamp_sec > 0 && stat(tempfile_name, &fileinfo) == 0 &&
|
|
(long)fileinfo.st_mtim.tv_sec == timestamp_sec &&
|
|
(long)fileinfo.st_mtim.tv_nsec == timestamp_nsec) {
|
|
statusline(REMARK, _("Nothing changed"));
|
|
return;
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
/* Replace the marked text (or entire text) with the corrected text. */
|
|
if (spelling && openfile->mark) {
|
|
ssize_t was_mark_lineno = openfile->mark->lineno;
|
|
bool upright = mark_is_before_cursor();
|
|
|
|
replaced = replace_buffer(tempfile_name, CUT, "spelling correction");
|
|
|
|
/* Adjust the end point of the marked region for any change in
|
|
* length of the region's last line. */
|
|
if (upright)
|
|
was_x = openfile->current_x;
|
|
else
|
|
openfile->mark_x = openfile->current_x;
|
|
|
|
/* Restore the mark. */
|
|
openfile->mark = line_from_number(was_mark_lineno);
|
|
} else
|
|
#endif
|
|
{
|
|
openfile->current = openfile->filetop;
|
|
openfile->current_x = 0;
|
|
|
|
replaced = replace_buffer(tempfile_name, CUT_TO_EOF,
|
|
/* TRANSLATORS: The next two go with Undid/Redid messages. */
|
|
(spelling ? N_("spelling correction") : N_("formatting")));
|
|
}
|
|
|
|
/* Go back to the old position. */
|
|
goto_line_posx(was_lineno, was_x);
|
|
if (was_at_eol || openfile->current_x > strlen(openfile->current->data))
|
|
openfile->current_x = strlen(openfile->current->data);
|
|
|
|
if (replaced) {
|
|
#ifndef NANO_TINY
|
|
openfile->filetop->has_anchor = FALSE;
|
|
update_undo(COUPLE_END);
|
|
#endif
|
|
}
|
|
|
|
openfile->placewewant = was_pww;
|
|
adjust_viewport(STATIONARY);
|
|
|
|
if (spelling)
|
|
statusline(REMARK, _("Finished checking spelling"));
|
|
else
|
|
statusline(REMARK, _("Buffer has been processed"));
|
|
}
|
|
#endif /* ENABLE_SPELLER || ENABLE_COLOR */
|
|
|
|
#ifdef ENABLE_SPELLER
|
|
/* Let the user edit the misspelled word. Return FALSE if the user cancels. */
|
|
bool fix_spello(const char *word)
|
|
{
|
|
linestruct *was_edittop = openfile->edittop;
|
|
linestruct *was_current = openfile->current;
|
|
size_t was_firstcolumn = openfile->firstcolumn;
|
|
size_t was_x = openfile->current_x;
|
|
bool proceed = FALSE;
|
|
int result;
|
|
#ifndef NANO_TINY
|
|
bool right_side_up = (openfile->mark && mark_is_before_cursor());
|
|
linestruct *top, *bot;
|
|
size_t top_x, bot_x;
|
|
|
|
/* If the mark is on, start at the beginning of the marked region. */
|
|
if (openfile->mark) {
|
|
get_region(&top, &top_x, &bot, &bot_x);
|
|
/* If the region is marked normally, swap the end points, so that
|
|
* (current, current_x) (where searching starts) is at the top. */
|
|
if (right_side_up) {
|
|
openfile->current = top;
|
|
openfile->current_x = top_x;
|
|
openfile->mark = bot;
|
|
openfile->mark_x = bot_x;
|
|
}
|
|
} else
|
|
#endif
|
|
/* Otherwise, start from the top of the file. */
|
|
{
|
|
openfile->current = openfile->filetop;
|
|
openfile->current_x = 0;
|
|
}
|
|
|
|
/* Find the first whole occurrence of word. */
|
|
result = findnextstr(word, TRUE, INREGION, NULL, FALSE, NULL, 0);
|
|
|
|
/* If the word isn't found, alert the user; if it is, allow correction. */
|
|
if (result == 0) {
|
|
statusline(ALERT, _("Unfindable word: %s"), word);
|
|
lastmessage = VACUUM;
|
|
proceed = TRUE;
|
|
napms(2800);
|
|
} else if (result == 1) {
|
|
spotlighted = TRUE;
|
|
light_from_col = xplustabs();
|
|
light_to_col = light_from_col + breadth(word);
|
|
#ifndef NANO_TINY
|
|
linestruct *saved_mark = openfile->mark;
|
|
openfile->mark = NULL;
|
|
#endif
|
|
edit_refresh();
|
|
|
|
put_cursor_at_end_of_answer();
|
|
|
|
/* Let the user supply a correctly spelled alternative. */
|
|
proceed = (do_prompt(MSPELL, word, NULL, edit_refresh,
|
|
/* TRANSLATORS: This is a prompt. */
|
|
_("Edit a replacement")) != -1);
|
|
|
|
spotlighted = FALSE;
|
|
|
|
#ifndef NANO_TINY
|
|
openfile->mark = saved_mark;
|
|
#endif
|
|
|
|
/* If a replacement was given, go through all occurrences. */
|
|
if (proceed && strcmp(word, answer) != 0) {
|
|
do_replace_loop(word, TRUE, was_current, &was_x);
|
|
|
|
/* TRANSLATORS: Shown after fixing misspellings in one word. */
|
|
statusbar(_("Next word..."));
|
|
napms(400);
|
|
}
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
if (openfile->mark) {
|
|
/* Restore the (compensated) end points of the marked region. */
|
|
if (right_side_up) {
|
|
openfile->current = openfile->mark;
|
|
openfile->current_x = openfile->mark_x;
|
|
openfile->mark = top;
|
|
openfile->mark_x = top_x;
|
|
} else {
|
|
openfile->current = top;
|
|
openfile->current_x = top_x;
|
|
}
|
|
} else
|
|
#endif
|
|
{
|
|
/* Restore the (compensated) cursor position. */
|
|
openfile->current = was_current;
|
|
openfile->current_x = was_x;
|
|
}
|
|
|
|
/* Restore the viewport to where it was. */
|
|
openfile->edittop = was_edittop;
|
|
openfile->firstcolumn = was_firstcolumn;
|
|
|
|
return proceed;
|
|
}
|
|
|
|
/* Run a spell-check on the given file, using 'spell' to produce a list of all
|
|
* misspelled words, then feeding those through 'sort' and 'uniq' to obtain an
|
|
* alphabetical list, which words are then offered one by one to the user for
|
|
* correction. */
|
|
void do_int_speller(const char *tempfile_name)
|
|
{
|
|
char *misspellings, *pointer, *oneword;
|
|
long pipesize;
|
|
size_t buffersize, bytesread, totalread;
|
|
int spell_fd[2], sort_fd[2], uniq_fd[2], tempfile_fd = -1;
|
|
pid_t pid_spell, pid_sort, pid_uniq;
|
|
int spell_status, sort_status, uniq_status;
|
|
|
|
/* Create all three pipes up front. */
|
|
if (pipe(spell_fd) == -1 || pipe(sort_fd) == -1 || pipe(uniq_fd) == -1) {
|
|
statusline(ALERT, _("Could not create pipe: %s"), strerror(errno));
|
|
return;
|
|
}
|
|
|
|
statusbar(_("Invoking spell checker..."));
|
|
|
|
/* Fork a process to run spell in. */
|
|
if ((pid_spell = fork()) == 0) {
|
|
/* Child: open the temporary file that holds the text to be checked. */
|
|
if ((tempfile_fd = open(tempfile_name, O_RDONLY)) == -1)
|
|
exit(6);
|
|
|
|
/* Connect standard input to the temporary file. */
|
|
if (dup2(tempfile_fd, STDIN_FILENO) < 0)
|
|
exit(7);
|
|
|
|
/* Connect standard output to the write end of the first pipe. */
|
|
if (dup2(spell_fd[1], STDOUT_FILENO) < 0)
|
|
exit(8);
|
|
|
|
close(tempfile_fd);
|
|
close(spell_fd[0]);
|
|
close(spell_fd[1]);
|
|
|
|
/* Try to run 'hunspell'; if that fails, fall back to 'spell'. */
|
|
execlp("hunspell", "hunspell", "-l", NULL);
|
|
execlp("spell", "spell", NULL);
|
|
|
|
/* Indicate failure when neither speller was found. */
|
|
exit(9);
|
|
}
|
|
|
|
/* Parent: close the unused write end of the first pipe. */
|
|
close(spell_fd[1]);
|
|
|
|
/* Fork a process to run sort in. */
|
|
if ((pid_sort = fork()) == 0) {
|
|
/* Connect standard input to the read end of the first pipe. */
|
|
if (dup2(spell_fd[0], STDIN_FILENO) < 0)
|
|
exit(7);
|
|
|
|
/* Connect standard output to the write end of the second pipe. */
|
|
if (dup2(sort_fd[1], STDOUT_FILENO) < 0)
|
|
exit(8);
|
|
|
|
close(spell_fd[0]);
|
|
close(sort_fd[0]);
|
|
close(sort_fd[1]);
|
|
|
|
/* Now run the sort program. Use -f to mix upper and lower case. */
|
|
execlp("sort", "sort", "-f", NULL);
|
|
|
|
exit(9);
|
|
}
|
|
|
|
close(spell_fd[0]);
|
|
close(sort_fd[1]);
|
|
|
|
/* Fork a process to run uniq in. */
|
|
if ((pid_uniq = fork()) == 0) {
|
|
if (dup2(sort_fd[0], STDIN_FILENO) < 0)
|
|
exit(7);
|
|
|
|
if (dup2(uniq_fd[1], STDOUT_FILENO) < 0)
|
|
exit(8);
|
|
|
|
close(sort_fd[0]);
|
|
close(uniq_fd[0]);
|
|
close(uniq_fd[1]);
|
|
|
|
execlp("uniq", "uniq", NULL);
|
|
|
|
exit(9);
|
|
}
|
|
|
|
close(sort_fd[0]);
|
|
close(uniq_fd[1]);
|
|
|
|
/* When some child process was not forked successfully... */
|
|
if (pid_spell < 0 || pid_sort < 0 || pid_uniq < 0) {
|
|
statusline(ALERT, _("Could not fork: %s"), strerror(errno));
|
|
close(uniq_fd[0]);
|
|
return;
|
|
}
|
|
|
|
/* Get the system pipe buffer size. */
|
|
pipesize = fpathconf(uniq_fd[0], _PC_PIPE_BUF);
|
|
|
|
if (pipesize < 1) {
|
|
statusline(ALERT, _("Could not get size of pipe buffer"));
|
|
close(uniq_fd[0]);
|
|
return;
|
|
}
|
|
|
|
/* Leave curses mode so that error messages go to the original screen. */
|
|
endwin();
|
|
|
|
/* Block SIGWINCHes while reading misspelled words from the third pipe. */
|
|
block_sigwinch(TRUE);
|
|
|
|
totalread = 0;
|
|
buffersize = pipesize + 1;
|
|
misspellings = nmalloc(buffersize);
|
|
pointer = misspellings;
|
|
|
|
while ((bytesread = read(uniq_fd[0], pointer, pipesize)) > 0) {
|
|
totalread += bytesread;
|
|
buffersize += pipesize;
|
|
misspellings = nrealloc(misspellings, buffersize);
|
|
pointer = misspellings + totalread;
|
|
}
|
|
|
|
*pointer = '\0';
|
|
close(uniq_fd[0]);
|
|
|
|
block_sigwinch(FALSE);
|
|
|
|
/* Re-enter curses mode. */
|
|
terminal_init();
|
|
doupdate();
|
|
|
|
/* Do any replacements case-sensitively, forward, and without regexes. */
|
|
SET(CASE_SENSITIVE);
|
|
UNSET(BACKWARDS_SEARCH);
|
|
UNSET(USE_REGEXP);
|
|
|
|
pointer = misspellings;
|
|
oneword = misspellings;
|
|
|
|
/* Process each of the misspelled words. */
|
|
while (*pointer != '\0') {
|
|
if ((*pointer == '\r') || (*pointer == '\n')) {
|
|
*pointer = '\0';
|
|
if (oneword != pointer) {
|
|
if (!fix_spello(oneword)) {
|
|
oneword = pointer;
|
|
break;
|
|
}
|
|
}
|
|
oneword = pointer + 1;
|
|
}
|
|
pointer++;
|
|
}
|
|
|
|
/* Special case: the last word doesn't end with '\r' or '\n'. */
|
|
if (oneword != pointer)
|
|
fix_spello(oneword);
|
|
|
|
free(misspellings);
|
|
refresh_needed = TRUE;
|
|
|
|
/* Process the end of the three processes. */
|
|
waitpid(pid_spell, &spell_status, 0);
|
|
waitpid(pid_sort, &sort_status, 0);
|
|
waitpid(pid_uniq, &uniq_status, 0);
|
|
|
|
if (WIFEXITED(uniq_status) == 0 || WEXITSTATUS(uniq_status))
|
|
statusline(ALERT, _("Error invoking \"uniq\""));
|
|
else if (WIFEXITED(sort_status) == 0 || WEXITSTATUS(sort_status))
|
|
statusline(ALERT, _("Error invoking \"sort\""));
|
|
else if (WIFEXITED(spell_status) == 0 || WEXITSTATUS(spell_status))
|
|
statusline(ALERT, _("Error invoking \"spell\""));
|
|
else
|
|
statusline(REMARK, _("Finished checking spelling"));
|
|
}
|
|
|
|
/* Spell check the current file. If an alternate spell checker is
|
|
* specified, use it. Otherwise, use the internal spell checker. */
|
|
void do_spell(void)
|
|
{
|
|
FILE *stream;
|
|
char *temp_name;
|
|
unsigned stash[sizeof(flags) / sizeof(flags[0])];
|
|
bool okay;
|
|
|
|
ran_a_tool = TRUE;
|
|
|
|
if (in_restricted_mode())
|
|
return;
|
|
|
|
temp_name = safe_tempfile(&stream);
|
|
|
|
if (temp_name == NULL) {
|
|
statusline(ALERT, _("Error writing temp file: %s"), strerror(errno));
|
|
return;
|
|
}
|
|
|
|
/* Save the settings of the global flags. */
|
|
memcpy(stash, flags, sizeof(flags));
|
|
|
|
/* Don't add an extra newline when writing out the (selected) text. */
|
|
SET(NO_NEWLINES);
|
|
|
|
#ifndef NANO_TINY
|
|
if (openfile->mark)
|
|
okay = write_region_to_file(temp_name, stream, TEMPORARY, OVERWRITE);
|
|
else
|
|
#endif
|
|
okay = write_file(temp_name, stream, TEMPORARY, OVERWRITE, NONOTES);
|
|
|
|
if (!okay) {
|
|
statusline(ALERT, _("Error writing temp file: %s"), strerror(errno));
|
|
free(temp_name);
|
|
return;
|
|
}
|
|
|
|
blank_bottombars();
|
|
|
|
if (alt_speller && *alt_speller)
|
|
treat(temp_name, alt_speller, TRUE);
|
|
else
|
|
do_int_speller(temp_name);
|
|
|
|
unlink(temp_name);
|
|
free(temp_name);
|
|
|
|
/* Restore the settings of the global flags. */
|
|
memcpy(flags, stash, sizeof(flags));
|
|
|
|
/* Ensure the help lines will be redrawn and a selection is retained. */
|
|
currmenu = MMOST;
|
|
shift_held = TRUE;
|
|
}
|
|
#endif /* ENABLE_SPELLER */
|
|
|
|
#ifdef ENABLE_COLOR
|
|
/* Run a linting program on the current buffer. */
|
|
void do_linter(void)
|
|
{
|
|
char *lintings, *pointer, *onelint;
|
|
long pipesize;
|
|
size_t buffersize, bytesread, totalread;
|
|
bool parsesuccess = FALSE;
|
|
int lint_status, lint_fd[2];
|
|
pid_t pid_lint;
|
|
bool helpless = ISSET(NO_HELP);
|
|
lintstruct *lints = NULL, *tmplint = NULL, *curlint = NULL;
|
|
time_t last_wait = 0;
|
|
|
|
ran_a_tool = TRUE;
|
|
|
|
if (in_restricted_mode())
|
|
return;
|
|
|
|
if (!openfile->syntax || !openfile->syntax->linter) {
|
|
statusline(AHEM, _("No linter is defined for this type of file"));
|
|
return;
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
openfile->mark = NULL;
|
|
#endif
|
|
edit_refresh();
|
|
|
|
if (openfile->modified) {
|
|
int choice = do_yesno_prompt(FALSE, _("Save modified buffer before linting?"));
|
|
|
|
if (choice == -1) {
|
|
statusbar(_("Cancelled"));
|
|
return;
|
|
} else if (choice == 1 && (write_it_out(FALSE, FALSE) != 1))
|
|
return;
|
|
}
|
|
|
|
/* Create a pipe up front. */
|
|
if (pipe(lint_fd) == -1) {
|
|
statusline(ALERT, _("Could not create pipe: %s"), strerror(errno));
|
|
return;
|
|
}
|
|
|
|
blank_bottombars();
|
|
currmenu = MLINTER;
|
|
statusbar(_("Invoking linter..."));
|
|
|
|
/* Fork a process to run the linter in. */
|
|
if ((pid_lint = fork()) == 0) {
|
|
char **lintargs = NULL;
|
|
|
|
/* Redirect standard output and standard error into the pipe. */
|
|
if (dup2(lint_fd[1], STDOUT_FILENO) < 0)
|
|
exit(7);
|
|
if (dup2(lint_fd[1], STDERR_FILENO) < 0)
|
|
exit(8);
|
|
|
|
close(lint_fd[0]);
|
|
close(lint_fd[1]);
|
|
|
|
construct_argument_list(&lintargs, openfile->syntax->linter, openfile->filename);
|
|
|
|
/* Start the linter program; we are using $PATH. */
|
|
execvp(lintargs[0], lintargs);
|
|
|
|
/* This is only reached when the linter is not found. */
|
|
exit(9);
|
|
}
|
|
|
|
/* Parent continues here. */
|
|
close(lint_fd[1]);
|
|
|
|
/* If the child process was not forked successfully... */
|
|
if (pid_lint < 0) {
|
|
statusline(ALERT, _("Could not fork: %s"), strerror(errno));
|
|
close(lint_fd[0]);
|
|
return;
|
|
}
|
|
|
|
/* Get the system pipe buffer size. */
|
|
pipesize = fpathconf(lint_fd[0], _PC_PIPE_BUF);
|
|
|
|
if (pipesize < 1) {
|
|
statusline(ALERT, _("Could not get size of pipe buffer"));
|
|
close(lint_fd[0]);
|
|
return;
|
|
}
|
|
|
|
/* Block resizing signals while reading from the pipe. */
|
|
block_sigwinch(TRUE);
|
|
|
|
/* Read in the returned syntax errors. */
|
|
totalread = 0;
|
|
buffersize = pipesize + 1;
|
|
lintings = nmalloc(buffersize);
|
|
pointer = lintings;
|
|
|
|
while ((bytesread = read(lint_fd[0], pointer, pipesize)) > 0) {
|
|
totalread += bytesread;
|
|
buffersize += pipesize;
|
|
lintings = nrealloc(lintings, buffersize);
|
|
pointer = lintings + totalread;
|
|
}
|
|
|
|
*pointer = '\0';
|
|
close(lint_fd[0]);
|
|
|
|
block_sigwinch(FALSE);
|
|
|
|
pointer = lintings;
|
|
onelint = lintings;
|
|
|
|
/* Now parse the output of the linter. */
|
|
while (*pointer != '\0') {
|
|
if ((*pointer == '\r') || (*pointer == '\n')) {
|
|
*pointer = '\0';
|
|
if (onelint != pointer) {
|
|
char *filename = NULL, *linestr = NULL, *maybecol = NULL;
|
|
char *message = copy_of(onelint);
|
|
|
|
/* The recognized format is "filename:line:column: message",
|
|
* where ":column" may be absent or be ",column" instead. */
|
|
if (strstr(message, ": ") != NULL) {
|
|
filename = strtok(onelint, ":");
|
|
if ((linestr = strtok(NULL, ":")) != NULL) {
|
|
if ((maybecol = strtok(NULL, ":")) != NULL) {
|
|
ssize_t tmplineno = 0, tmpcolno = 0;
|
|
char *tmplinecol;
|
|
|
|
tmplineno = strtol(linestr, NULL, 10);
|
|
if (tmplineno <= 0) {
|
|
pointer++;
|
|
free(message);
|
|
continue;
|
|
}
|
|
|
|
tmpcolno = strtol(maybecol, NULL, 10);
|
|
/* Check if the middle field is in comma format. */
|
|
if (tmpcolno <= 0) {
|
|
strtok(linestr, ",");
|
|
if ((tmplinecol = strtok(NULL, ",")) != NULL)
|
|
tmpcolno = strtol(tmplinecol, NULL, 10);
|
|
else
|
|
tmpcolno = 1;
|
|
}
|
|
|
|
/* Nice. We have a lint message we can use. */
|
|
parsesuccess = TRUE;
|
|
tmplint = curlint;
|
|
curlint = nmalloc(sizeof(lintstruct));
|
|
curlint->next = NULL;
|
|
curlint->prev = tmplint;
|
|
if (curlint->prev != NULL)
|
|
curlint->prev->next = curlint;
|
|
curlint->msg = copy_of(strstr(message, ": ") + 2);
|
|
curlint->lineno = tmplineno;
|
|
curlint->colno = tmpcolno;
|
|
curlint->filename = copy_of(filename);
|
|
|
|
if (lints == NULL)
|
|
lints = curlint;
|
|
}
|
|
}
|
|
}
|
|
free(message);
|
|
}
|
|
onelint = pointer + 1;
|
|
}
|
|
pointer++;
|
|
}
|
|
|
|
free(lintings);
|
|
|
|
/* Process the end of the linting process. */
|
|
waitpid(pid_lint, &lint_status, 0);
|
|
|
|
if (!WIFEXITED(lint_status) || WEXITSTATUS(lint_status) > 2) {
|
|
statusline(ALERT, _("Error invoking '%s'"), openfile->syntax->linter);
|
|
return;
|
|
}
|
|
|
|
if (!parsesuccess) {
|
|
statusline(REMARK, _("Got 0 parsable lines from command: %s"),
|
|
openfile->syntax->linter);
|
|
return;
|
|
}
|
|
|
|
if (helpless && LINES > 5) {
|
|
UNSET(NO_HELP);
|
|
window_init();
|
|
}
|
|
|
|
/* Show that we are in the linter now. */
|
|
titlebar(NULL);
|
|
bottombars(MLINTER);
|
|
|
|
tmplint = NULL;
|
|
curlint = lints;
|
|
|
|
while (TRUE) {
|
|
int kbinput;
|
|
functionptrtype func;
|
|
struct stat lintfileinfo;
|
|
|
|
if (stat(curlint->filename, &lintfileinfo) != -1 &&
|
|
(openfile->statinfo == NULL ||
|
|
openfile->statinfo->st_ino != lintfileinfo.st_ino)) {
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
const openfilestruct *started_at = openfile;
|
|
|
|
openfile = openfile->next;
|
|
while (openfile != started_at && (openfile->statinfo == NULL ||
|
|
openfile->statinfo->st_ino != lintfileinfo.st_ino))
|
|
openfile = openfile->next;
|
|
|
|
if (openfile->statinfo == NULL ||
|
|
openfile->statinfo->st_ino != lintfileinfo.st_ino) {
|
|
char *msg = nmalloc(1024 + strlen(curlint->filename));
|
|
int choice;
|
|
|
|
sprintf(msg, _("This message is for unopened file %s,"
|
|
" open it in a new buffer?"), curlint->filename);
|
|
choice = do_yesno_prompt(FALSE, msg);
|
|
currmenu = MLINTER;
|
|
free(msg);
|
|
|
|
if (choice == -1) {
|
|
statusbar(_("Cancelled"));
|
|
break;
|
|
} else if (choice == 1) {
|
|
open_buffer(curlint->filename, TRUE);
|
|
} else {
|
|
#endif
|
|
char *dontwantfile = copy_of(curlint->filename);
|
|
lintstruct *restlint = NULL;
|
|
|
|
while (curlint != NULL) {
|
|
if (strcmp(curlint->filename, dontwantfile) == 0) {
|
|
if (curlint == lints)
|
|
lints = curlint->next;
|
|
else
|
|
curlint->prev->next = curlint->next;
|
|
if (curlint->next != NULL)
|
|
curlint->next->prev = curlint->prev;
|
|
tmplint = curlint;
|
|
curlint = curlint->next;
|
|
free(tmplint->msg);
|
|
free(tmplint->filename);
|
|
free(tmplint);
|
|
} else {
|
|
if (restlint == NULL)
|
|
restlint = curlint;
|
|
curlint = curlint->next;
|
|
}
|
|
}
|
|
|
|
free(dontwantfile);
|
|
|
|
if (restlint == NULL) {
|
|
statusline(REMARK, _("No messages for this file"));
|
|
break;
|
|
} else {
|
|
curlint = restlint;
|
|
continue;
|
|
}
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
if (tmplint != curlint) {
|
|
/* Put the cursor at the reported position, but don't go beyond EOL
|
|
* when the second number is a column number instead of an index. */
|
|
goto_line_posx(curlint->lineno, curlint->colno - 1);
|
|
openfile->current_x = actual_x(openfile->current->data, openfile->placewewant);
|
|
titlebar(NULL);
|
|
adjust_viewport(CENTERING);
|
|
#ifdef ENABLE_LINENUMBERS
|
|
confirm_margin();
|
|
#endif
|
|
edit_refresh();
|
|
statusline(NOTICE, curlint->msg);
|
|
bottombars(MLINTER);
|
|
}
|
|
|
|
/* Place the cursor to indicate the affected line. */
|
|
place_the_cursor();
|
|
wnoutrefresh(edit);
|
|
|
|
kbinput = get_kbinput(bottomwin, VISIBLE);
|
|
|
|
#ifndef NANO_TINY
|
|
if (kbinput == KEY_WINCH)
|
|
continue;
|
|
#endif
|
|
func = func_from_key(&kbinput);
|
|
tmplint = curlint;
|
|
|
|
if (func == do_cancel || func == do_enter) {
|
|
wipe_statusbar();
|
|
break;
|
|
} else if (func == do_help) {
|
|
tmplint = NULL;
|
|
do_help();
|
|
} else if (func == do_page_up || func == to_prev_block) {
|
|
if (curlint->prev != NULL)
|
|
curlint = curlint->prev;
|
|
else if (last_wait != time(NULL)) {
|
|
statusbar(_("At first message"));
|
|
beep();
|
|
napms(600);
|
|
last_wait = time(NULL);
|
|
statusline(NOTICE, curlint->msg);
|
|
}
|
|
} else if (func == do_page_down || func == to_next_block) {
|
|
if (curlint->next != NULL)
|
|
curlint = curlint->next;
|
|
else if (last_wait != time(NULL)) {
|
|
statusbar(_("At last message"));
|
|
beep();
|
|
napms(600);
|
|
last_wait = time(NULL);
|
|
statusline(NOTICE, curlint->msg);
|
|
}
|
|
} else
|
|
beep();
|
|
}
|
|
|
|
for (curlint = lints; curlint != NULL;) {
|
|
tmplint = curlint;
|
|
curlint = curlint->next;
|
|
free(tmplint->msg);
|
|
free(tmplint->filename);
|
|
free(tmplint);
|
|
}
|
|
|
|
if (helpless) {
|
|
SET(NO_HELP);
|
|
window_init();
|
|
refresh_needed = TRUE;
|
|
}
|
|
|
|
lastmessage = VACUUM;
|
|
currmenu = MMOST;
|
|
titlebar(NULL);
|
|
}
|
|
|
|
/* Run a manipulation program on the contents of the buffer. */
|
|
void do_formatter(void)
|
|
{
|
|
FILE *stream;
|
|
char *temp_name;
|
|
bool okay = FALSE;
|
|
|
|
ran_a_tool = TRUE;
|
|
|
|
if (in_restricted_mode())
|
|
return;
|
|
|
|
if (!openfile->syntax || !openfile->syntax->formatter) {
|
|
statusline(AHEM, _("No formatter is defined for this type of file"));
|
|
return;
|
|
}
|
|
|
|
#ifndef NANO_TINY
|
|
openfile->mark = NULL;
|
|
#endif
|
|
|
|
temp_name = safe_tempfile(&stream);
|
|
|
|
if (temp_name != NULL)
|
|
okay = write_file(temp_name, stream, TEMPORARY, OVERWRITE, NONOTES);
|
|
|
|
if (!okay) {
|
|
statusline(ALERT, _("Error writing temp file: %s"), strerror(errno));
|
|
free(temp_name);
|
|
return;
|
|
}
|
|
|
|
treat(temp_name, openfile->syntax->formatter, FALSE);
|
|
|
|
unlink(temp_name);
|
|
free(temp_name);
|
|
}
|
|
#endif /* ENABLE_COLOR */
|
|
|
|
#ifndef NANO_TINY
|
|
/* Our own version of "wc". Note that the character count is in
|
|
* multibyte characters instead of single-byte characters. */
|
|
void count_lines_words_and_characters(void)
|
|
{
|
|
linestruct *was_current = openfile->current;
|
|
size_t was_x = openfile->current_x;
|
|
linestruct *topline, *botline;
|
|
size_t top_x, bot_x;
|
|
size_t words = 0, chars = 0;
|
|
ssize_t lines = 0;
|
|
|
|
/* Set the start and end point of the area to measure: either the marked
|
|
* region or the whole buffer. Then compute the number of characters. */
|
|
if (openfile->mark) {
|
|
get_region(&topline, &top_x, &botline, &bot_x);
|
|
|
|
if (topline != botline)
|
|
chars = number_of_characters_in(topline->next, botline) + 1;
|
|
|
|
chars += mbstrlen(topline->data + top_x) - mbstrlen(botline->data + bot_x);
|
|
} else {
|
|
topline = openfile->filetop;
|
|
top_x = 0;
|
|
botline = openfile->filebot;
|
|
bot_x = strlen(botline->data);
|
|
|
|
chars = openfile->totsize;
|
|
}
|
|
|
|
/* Compute the number of lines. */
|
|
lines = botline->lineno - topline->lineno;
|
|
lines += (bot_x == 0 || (topline == botline && top_x == bot_x)) ? 0 : 1;
|
|
|
|
openfile->current = topline;
|
|
openfile->current_x = top_x;
|
|
|
|
/* Keep stepping to the next word (considering punctuation as part of a
|
|
* word, as "wc -w" does), until we reach the end of the relevant area,
|
|
* incrementing the word count for each successful step. */
|
|
while (openfile->current->lineno < botline->lineno ||
|
|
(openfile->current == botline && openfile->current_x < bot_x)) {
|
|
if (do_next_word(FALSE))
|
|
words++;
|
|
}
|
|
|
|
/* Restore where we were. */
|
|
openfile->current = was_current;
|
|
openfile->current_x = was_x;
|
|
|
|
/* Report on the status bar the number of lines, words, and characters. */
|
|
statusline(INFO, _("%s%zd %s, %zu %s, %zu %s"),
|
|
openfile->mark ? _("In Selection: ") : "",
|
|
lines, P_("line", "lines", lines),
|
|
words, P_("word", "words", words),
|
|
chars, P_("character", "characters", chars));
|
|
}
|
|
#endif /* !NANO_TINY */
|
|
|
|
/* Get verbatim input. */
|
|
void do_verbatim_input(void)
|
|
{
|
|
size_t count = 1;
|
|
char *bytes;
|
|
|
|
/* TRANSLATORS: Shown when the next keystroke will be inserted verbatim. */
|
|
statusline(INFO, _("Verbatim Input"));
|
|
place_the_cursor();
|
|
|
|
/* Read in the first one or two bytes of the next keystroke. */
|
|
bytes = get_verbatim_kbinput(edit, &count);
|
|
|
|
/* When something valid was obtained, unsuppress cursor-position display,
|
|
* insert the bytes into the edit buffer, and blank the status bar. */
|
|
if (count > 0) {
|
|
if (ISSET(CONSTANT_SHOW) || ISSET(MINIBAR))
|
|
lastmessage = VACUUM;
|
|
|
|
if (count < 999)
|
|
inject(bytes, count);
|
|
|
|
wipe_statusbar();
|
|
} else
|
|
/* TRANSLATORS: An invalid verbatim Unicode code was typed. */
|
|
statusline(AHEM, _("Invalid code"));
|
|
|
|
free(bytes);
|
|
}
|
|
|
|
#ifdef ENABLE_WORDCOMPLETION
|
|
/* Return a copy of the found completion candidate. */
|
|
char *copy_completion(char *text)
|
|
{
|
|
char *word;
|
|
size_t length = 0, index = 0;
|
|
|
|
/* Find the end of the candidate word to get its length. */
|
|
while (is_word_char(&text[length], FALSE))
|
|
length = step_right(text, length);
|
|
|
|
/* Now copy this candidate to a new string. */
|
|
word = nmalloc(length + 1);
|
|
while (index < length)
|
|
word[index++] = *(text++);
|
|
word[index] = '\0';
|
|
|
|
return word;
|
|
}
|
|
|
|
/* Look at the fragment the user has typed, then search the current buffer for
|
|
* the first word that starts with this fragment, and tentatively complete the
|
|
* fragment. If the user types 'Complete' again, search and paste the next
|
|
* possible completion. */
|
|
void complete_a_word(void)
|
|
{
|
|
char *shard, *completion = NULL;
|
|
size_t start_of_shard, shard_length = 0;
|
|
size_t i = 0, j = 0;
|
|
completionstruct *some_word;
|
|
#ifdef ENABLE_WRAPPING
|
|
bool was_set_wrapping = ISSET(BREAK_LONG_LINES);
|
|
#endif
|
|
|
|
/* If this is a fresh completion attempt... */
|
|
if (pletion_line == NULL) {
|
|
/* Clear the list of words of a previous completion run. */
|
|
while (list_of_completions != NULL) {
|
|
completionstruct *dropit = list_of_completions;
|
|
list_of_completions = list_of_completions->next;
|
|
free(dropit->word);
|
|
free(dropit);
|
|
}
|
|
|
|
/* Prevent a completion from being merged with typed text. */
|
|
openfile->last_action = OTHER;
|
|
|
|
/* Initialize the starting point for searching. */
|
|
pletion_line = openfile->filetop;
|
|
pletion_x = 0;
|
|
|
|
/* Wipe the "No further matches" message. */
|
|
wipe_statusbar();
|
|
} else {
|
|
/* Remove the attempted completion from the buffer. */
|
|
do_undo();
|
|
}
|
|
|
|
/* Find the start of the fragment that the user typed. */
|
|
start_of_shard = openfile->current_x;
|
|
while (start_of_shard > 0) {
|
|
size_t oneleft = step_left(openfile->current->data, start_of_shard);
|
|
|
|
if (!is_word_char(&openfile->current->data[oneleft], FALSE))
|
|
break;
|
|
start_of_shard = oneleft;
|
|
}
|
|
|
|
/* If there is no word fragment before the cursor, do nothing. */
|
|
if (start_of_shard == openfile->current_x) {
|
|
/* TRANSLATORS: Shown when no text is directly left of the cursor. */
|
|
statusline(AHEM, _("No word fragment"));
|
|
pletion_line = NULL;
|
|
return;
|
|
}
|
|
|
|
shard = nmalloc(openfile->current_x - start_of_shard + 1);
|
|
|
|
/* Copy the fragment that has to be searched for. */
|
|
while (start_of_shard < openfile->current_x)
|
|
shard[shard_length++] = openfile->current->data[start_of_shard++];
|
|
shard[shard_length] = '\0';
|
|
|
|
/* Run through all of the lines in the buffer, looking for shard. */
|
|
while (pletion_line != NULL) {
|
|
ssize_t threshold = strlen(pletion_line->data) - shard_length - 1;
|
|
/* The point where we can stop searching for shard. */
|
|
|
|
/* Traverse the whole line, looking for shard. */
|
|
for (i = pletion_x; (ssize_t)i < threshold; i++) {
|
|
/* If the first byte doesn't match, run on. */
|
|
if (pletion_line->data[i] != shard[0])
|
|
continue;
|
|
|
|
/* Compare the rest of the bytes in shard. */
|
|
for (j = 1; j < shard_length; j++)
|
|
if (pletion_line->data[i + j] != shard[j])
|
|
break;
|
|
|
|
/* If not all of the bytes matched, continue searching. */
|
|
if (j < shard_length)
|
|
continue;
|
|
|
|
/* If the found match is not /longer/ than shard, skip it. */
|
|
if (!is_word_char(&pletion_line->data[i + j], FALSE))
|
|
continue;
|
|
|
|
/* If the match is not a separate word, skip it. */
|
|
if (i > 0 && is_word_char(&pletion_line->data[
|
|
step_left(pletion_line->data, i)], FALSE))
|
|
continue;
|
|
|
|
/* If this match is the shard itself, ignore it. */
|
|
if (pletion_line == openfile->current &&
|
|
i == openfile->current_x - shard_length)
|
|
continue;
|
|
|
|
completion = copy_completion(pletion_line->data + i);
|
|
|
|
/* Look among earlier attempted completions for a duplicate. */
|
|
some_word = list_of_completions;
|
|
while (some_word && strcmp(some_word->word, completion) != 0)
|
|
some_word = some_word->next;
|
|
|
|
/* If we've already tried this word, skip it. */
|
|
if (some_word != NULL) {
|
|
free(completion);
|
|
continue;
|
|
}
|
|
|
|
/* Add the found word to the list of completions. */
|
|
some_word = nmalloc(sizeof(completionstruct));
|
|
some_word->word = completion;
|
|
some_word->next = list_of_completions;
|
|
list_of_completions = some_word;
|
|
|
|
#ifdef ENABLE_WRAPPING
|
|
/* Temporarily disable wrapping so only one undo item is added. */
|
|
UNSET(BREAK_LONG_LINES);
|
|
#endif
|
|
/* Inject the completion into the buffer. */
|
|
inject(&completion[shard_length], strlen(completion) - shard_length);
|
|
|
|
#ifdef ENABLE_WRAPPING
|
|
/* If needed, reenable wrapping and wrap the current line. */
|
|
if (was_set_wrapping) {
|
|
SET(BREAK_LONG_LINES);
|
|
do_wrap();
|
|
}
|
|
#endif
|
|
/* Set the position for a possible next search attempt. */
|
|
pletion_x = ++i;
|
|
|
|
free(shard);
|
|
return;
|
|
}
|
|
|
|
pletion_line = pletion_line->next;
|
|
pletion_x = 0;
|
|
}
|
|
|
|
/* The search has reached the end of the file. */
|
|
if (list_of_completions != NULL) {
|
|
edit_refresh();
|
|
statusline(AHEM, _("No further matches"));
|
|
} else
|
|
/* TRANSLATORS: Shown when there are zero possible completions. */
|
|
statusline(AHEM, _("No matches"));
|
|
|
|
free(shard);
|
|
}
|
|
#endif /* ENABLE_WORDCOMPLETION */
|