mirror of
git://projects.qi-hardware.com/fped.git
synced 2024-11-04 23:55:54 +02:00
8cd9b7b514
created file. This is a precaution against accidently saving to a manual work, which would change the structure and remove all comments. - fped.h, fped.c, file.c: moved declaration of save_file_name into shared header - dump.h, dump.c (MACHINE_GENERATED): moved header marking machine-generated files into shared macro - gui.c (save_as_fpd): added "Save as" dialog - fped.h, fped.c (load_file), gui.c: disable "Save" if editing a file that doesn't have the machine-generated header git-svn-id: http://svn.openmoko.org/trunk/eda/fped@5922 99fdad57-331a-0410-800a-d7fa5415bdb3
197 lines
3.1 KiB
C
197 lines
3.1 KiB
C
/*
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* file.c - File handling
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*
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* Written 2009, 2010 by Werner Almesberger
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* Copyright 2009, 2010 by Werner Almesberger
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*
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* This program 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 by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include "dump.h"
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#include "kicad.h"
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#include "postscript.h"
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#include "util.h"
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#include "file.h"
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#include "fped.h"
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/* ----- general helper functions ------------------------------------------ */
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char *set_extension(const char *name, const char *ext)
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{
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char *s = stralloc(name);
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char *slash, *dot;
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char *res;
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slash = strrchr(s, '/');
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dot = strrchr(slash ? slash : s, '.');
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if (dot)
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*dot = 0;
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res = stralloc_printf("%s.%s", s, ext);
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free(s);
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return res;
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}
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int file_exists(const char *name)
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{
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struct stat st;
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if (stat(name, &st) >= 0)
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return 1;
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if (errno == ENOENT)
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return 0;
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perror(name);
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return -1;
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}
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int save_to(const char *name, int (*fn)(FILE *file))
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{
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FILE *file;
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file = fopen(name, "w");
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if (!file) {
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perror(name);
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return 0;
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}
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if (!fn(file)) {
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perror(name);
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return 0;
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}
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if (fclose(file) == EOF) {
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perror(name);
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return 0;
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}
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return 1;
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}
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void save_with_backup(const char *name, int (*fn)(FILE *file))
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{
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char *s = stralloc(name);
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char *back, *tmp;
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char *slash, *dot;
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int n, res;
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/* save to temporary file */
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slash = strrchr(s, '/');
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if (!slash)
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tmp = stralloc_printf("~%s", s);
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else {
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*slash = 0;
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tmp = stralloc_printf("%s/~%s", s, slash+1);
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*slash = '/';
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}
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if (!save_to(tmp, fn))
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return;
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/* move existing file out of harm's way */
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dot = strrchr(slash ? slash : s, '.');
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if (dot)
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*dot = 0;
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n = 0;
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while (1) {
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back = stralloc_printf("%s~%d%s%s",
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s, n, dot ? "." : "", dot ? dot+1 : "");
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res = file_exists(back);
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if (!res)
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break;
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free(back);
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if (res < 0)
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return;
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n++;
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}
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if (rename(name, back) < 0) {
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if (errno != ENOENT) {
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perror(name);
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free(back);
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return;
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}
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} else {
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fprintf(stderr, "renamed %s to %s\n", name, back);
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}
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free(back);
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/* rename to final name */
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if (rename(tmp, name) < 0) {
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perror(name);
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free(tmp);
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return;
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}
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free(tmp);
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fprintf(stderr, "saved to %s\n", name);
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}
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/* ----- application-specific save handlers -------------------------------- */
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void save_fpd(void)
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{
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if (save_file_name)
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save_with_backup(save_file_name, dump);
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else {
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if (!dump(stdout))
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perror("stdout");
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}
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}
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void write_kicad(void)
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{
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char *name;
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if (save_file_name) {
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name = set_extension(save_file_name, "mod");
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save_to(name, kicad);
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free(name);
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} else {
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if (!kicad(stdout))
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perror("stdout");
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}
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}
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static void do_write_ps(int (*fn)(FILE *file))
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{
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char *name;
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if (save_file_name) {
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name = set_extension(save_file_name, "ps");
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save_to(name, fn);
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free(name);
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} else {
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if (!fn(stdout))
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perror("stdout");
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}
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}
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void write_ps(void)
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{
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do_write_ps(postscript);
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}
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void write_ps_fullpage(void)
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{
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do_write_ps(postscript_fullpage);
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}
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