1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/*
* file.c - File handling
*
* Written 2009, 2010 by Werner Almesberger
* Copyright 2009, 2010 by Werner Almesberger
*
* 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 2 of the License, or
* (at your option) any later version.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/stat.h>
#include "dump.h"
#include "kicad.h"
#include "postscript.h"
#include "util.h"
#include "file.h"
#include "fped.h"
/* ----- general helper functions ------------------------------------------ */
char *set_extension(const char *name, const char *ext)
{
char *s = stralloc(name);
char *slash, *dot;
char *res;
slash = strrchr(s, '/');
dot = strrchr(slash ? slash : s, '.');
if (dot)
*dot = 0;
res = stralloc_printf("%s.%s", s, ext);
free(s);
return res;
}
int file_exists(const char *name)
{
struct stat st;
if (stat(name, &st) >= 0)
return 1;
if (errno == ENOENT)
return 0;
perror(name);
return -1;
}
int save_to(const char *name, int (*fn)(FILE *file))
{
FILE *file;
file = fopen(name, "w");
if (!file) {
perror(name);
return 0;
}
if (!fn(file)) {
perror(name);
return 0;
}
if (fclose(file) == EOF) {
perror(name);
return 0;
}
return 1;
}
void save_with_backup(const char *name, int (*fn)(FILE *file))
{
char *s = stralloc(name);
char *back, *tmp;
char *slash, *dot;
int n, res;
/* save to temporary file */
slash = strrchr(s, '/');
if (!slash)
tmp = stralloc_printf("~%s", s);
else {
*slash = 0;
tmp = stralloc_printf("%s/~%s", s, slash+1);
*slash = '/';
}
if (!save_to(tmp, fn))
return;
/* move existing file out of harm's way */
dot = strrchr(slash ? slash : s, '.');
if (dot)
*dot = 0;
n = 0;
while (1) {
back = stralloc_printf("%s~%d%s%s",
s, n, dot ? "." : "", dot ? dot+1 : "");
res = file_exists(back);
if (!res)
break;
free(back);
if (res < 0)
return;
n++;
}
if (rename(name, back) < 0) {
if (errno != ENOENT) {
perror(name);
free(back);
return;
}
} else {
fprintf(stderr, "renamed %s to %s\n", name, back);
}
free(back);
/* rename to final name */
if (rename(tmp, name) < 0) {
perror(name);
free(tmp);
return;
}
free(tmp);
fprintf(stderr, "saved to %s\n", name);
}
/* ----- application-specific save handlers -------------------------------- */
void save_fpd(void)
{
if (save_file_name)
save_with_backup(save_file_name, dump);
else {
if (!dump(stdout))
perror("stdout");
}
}
void write_kicad(void)
{
char *name;
if (save_file_name) {
name = set_extension(save_file_name, "mod");
save_to(name, kicad);
free(name);
} else {
if (!kicad(stdout))
perror("stdout");
}
}
static void do_write_ps(int (*fn)(FILE *file))
{
char *name;
if (save_file_name) {
name = set_extension(save_file_name, "ps");
save_to(name, fn);
free(name);
} else {
if (!fn(stdout))
perror("stdout");
}
}
void write_ps(void)
{
do_write_ps(postscript);
}
void write_ps_fullpage(void)
{
do_write_ps(postscript_fullpage);
}
|
