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/* edit.c - Editing the file names.
*
* Copyright (C) 2001, 2002, 2004, 2005, 2007, 2008 Oskar Liljeblad
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <string.h> /* gnulib (C89) */
#include <stdlib.h> /* C89 */
#include <stdio.h> /* C89 */
#include <stdbool.h> /* gnulib (POSIX) */
#include <gettext.h> /* gnulib (gettext) */
#define _(s) gettext(s)
#define N_(s) (s)
#include "quotearg.h" /* gnulib */
#include "xalloc.h" /* gnulib */
#include "xvasprintf.h" /* gnulib */
#include "common/string-utils.h"
#include "common/io-utils.h"
#include "common/error.h"
#include "common/llist.h"
#include "qcmd.h"
LList *edit_file_list;
static bool accept_reedit = false;
static EditFormat *formats[] = {
&destination_only_format,
&dual_column_format,
&single_column_format
};
/* Find an edit format by its long or short name.
* Return NULL if no format was found.
*/
EditFormat *
find_edit_format_by_name(const char *name)
{
int c;
for (c = 0; c < sizeof(formats)/sizeof(*formats); c++) {
if (strcmp(name, formats[c]->name) == 0
|| strcmp(name, formats[c]->short_name) == 0)
return formats[c];
}
return NULL;
}
/* A readline completion generator for the various edit formats.
*/
char *
edit_format_generator(const char *text, int state)
{
static int c;
if (state == 0)
c = 0;
while (c < sizeof(formats)/sizeof(*formats)) {
char *name = formats[c]->name;
c++;
if (starts_with(name, text))
return xstrdup(name);
}
return NULL;
}
bool
edit_files(bool all, bool force)
{
LListIterator it;
FILE *file;
char *cmd;
int rc;
if (!accept_reedit || force) {
accept_reedit = false;
/* Determine what files we want to display to user */
llist_clear(edit_file_list);
if (!all) {
if (plan != NULL && llist_size(plan->error) != 0)
llist_add_all(edit_file_list, plan->error);
} else {
llist_add_all(edit_file_list, work_files);
}
if (llist_is_empty(edit_file_list)) {
warn(_("There are no previous files to edit, use `edit all' to edit all."));
return false;
}
/* Prepare the edit file */
file = fopen(edit_filename, "w");
if (file == NULL) {
warn(_("cannot create `%s': %s"), quotearg(edit_filename), errstr);
llist_clear(edit_file_list);
return false;
}
/* Write file names to the output file */
format->output(file, edit_file_list);
if (fclose(file) != 0) {
warn(_("cannot close `%s': %s"), quotearg(edit_filename), errstr);
llist_clear(edit_file_list);
return false;
}
accept_reedit = true;
}
/* Start the editor */
cmd = xasprintf("%s %s", editor_program, edit_filename);
/* Fortunately, edit_filename usually does not contain
* special characters and does not start with a dash. */
rc = system(cmd);
if (rc == -1) {
warn(_("cannot start editor - %s"), quotearg(editor_program), errstr);
free(cmd); /* May clobber errno */
return false;
}
free(cmd); /* May clobber errno */
if (rc != 0) {
warn(_("editor exited with status %d"), quotearg(editor_program), rc);
return false;
}
/* Open the file */
file = fopen(edit_filename, "r");
if (file == NULL) {
warn(_("cannot open `%s' for reading: %s"), quotearg(edit_filename), errstr);
return false;
}
/* Read the file */
if (!format->input(file, edit_file_list))
return false;
if (fclose(file) != 0)
warn(_("cannot close `%s': %s"), quotearg(edit_filename), errstr);
accept_reedit = false;
/* Reset status of all files. */
for (llist_iterator(edit_file_list, &it); it.has_next(&it); ) {
FileSpec *spec = it.next(&it);
spec->status = STATUS_UNCHECKED;
}
llist_clear(edit_file_list);
return true;
}
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