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
197
198
199
200
201
202
203
204
205
206
207
208
209
|
/* convert.c - convert data files based on extension
* Copyright (C) 2004 Matthias Czapla <dermatsch@gmx.de>
*
* This file is part of cue2toc.
*
* 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.
*
* 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 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 <ctype.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include "convert.h"
#include "error.h"
#include "conf.h"
#include "cue2toc.h"
/* The global list of configured converters */
struct converter *converters = NULL;
/* For debugging info the number of the current track */
static int trackno = 1;
/* Allocate, initialize and return a new converter structure */
struct converter*
new_converter(void)
{
struct converter *converter;
if ((converter = malloc(sizeof(struct converter))) == NULL)
err_quit("Memory allocation error");
converter->ext_from = converter->ext_to = converter->command = NULL;
converter->next = NULL;
return converter;
}
/* Add a new converter to global list of converters */
void
add_converter(struct converter *converter)
{
struct converter *tmp;
if (converters == NULL) {
converters = converter;
return;
}
tmp = converters;
while (tmp->next != NULL)
tmp = tmp->next;
tmp->next = converter;
tmp->next->next = NULL; /* just to be safe */
}
/* Find a converter for filename s */
struct converter*
find_converter(const char *s)
{
char *ext;
struct converter *converter = converters;
int i;
while (converter != NULL) {
if (strlen(s) <= strlen(converter->ext_from)) {
converter = converter->next;
continue;
}
if ((ext = malloc(strlen(converter->ext_from) + 1)) == NULL)
err_quit("Memory allocation error");
strcpy(ext, &s[strlen(s) - strlen(converter->ext_from)]);
for (i = 0; i < strlen(ext); i++)
ext[i] = tolower(ext[i]);
if (strcmp(ext, converter->ext_from) == 0) {
free(ext);
return converter;
}
free(ext);
converter = converter->next;
}
return NULL; /* No matching converter found */
}
/* Convert file of this track if a converter is available */
void
do_track(struct trackspec *tr)
{
struct converter *converter;
char *c2t_from_prefix = "C2T_FROM=";
char *c2t_to_prefix = "C2T_TO=";
char *c2t_from;
char *c2t_to;
char *c2t_to_filename; /* needed to check if exists */
struct stat statbuf;
int status;
if ((converter = find_converter(tr->filename)) == NULL)
return; /* No converter for this filename */
if (debug) fprintf(stderr, "Found a converter for track %d: %s\n",
trackno, converter->command);
if ((c2t_from = malloc(strlen(c2t_from_prefix)
+ strlen(tr->filename) + 1)) == NULL)
err_quit("Memory allocation error");
if ((c2t_to = malloc(strlen(c2t_to_prefix) + strlen(tr->filename)
- strlen(converter->ext_from)
+ strlen(converter->ext_to) + 1)) == NULL)
err_quit("Memory allocation error");
if ((c2t_to_filename = malloc(strlen(tr->filename)
- strlen(converter->ext_from)
+ strlen(converter->ext_to) + 1)) == NULL)
err_quit("Memory allocation error");
/* Construct environment string for C2T_FROM */
strcpy(c2t_from, c2t_from_prefix);
strcat(c2t_from, tr->filename);
/* Construct environment string for C2T_TO */
strcpy(c2t_to, c2t_to_prefix);
strncat(c2t_to, tr->filename,
strlen(tr->filename) - strlen(converter->ext_from));
strcat(c2t_to, converter->ext_to);
/* Construct filename of C2T_TO file for existence check */
strncpy(c2t_to_filename, tr->filename, strlen(tr->filename)
- strlen(converter->ext_from));
c2t_to_filename[strlen(tr->filename)
- strlen(converter->ext_from)] = '\0';
strcat(c2t_to_filename, converter->ext_to);
if (stat(c2t_to_filename, &statbuf) != -1) { /* it exists */
if (debug) fprintf(stderr, "%s already exists\n",
c2t_to_filename);
free(c2t_from);
free(c2t_to);
strcpy(tr->filename, c2t_to_filename);
free(c2t_to_filename);
return;
}
if (debug) fprintf(stderr, "Exporting \"%s\"\n", c2t_from);
if (putenv(c2t_from) == -1)
err_sys("putenv error");
if (debug) fprintf(stderr, "Exporting \"%s\"\n", c2t_to);
if (putenv(c2t_to) == -1)
err_sys("putenv error");
/* Execute the conversion command */
if (!quiet)
fprintf(stderr, "%s: Track %d: Converting \"%s\" to \"%s\"\n",
prog, trackno, tr->filename, c2t_to_filename);
if ((status = system(converter->command)) == -1)
err_sys("system error");
if (debug) fprintf(stderr, "Conversion command returned with "
"exit status %d\n", WEXITSTATUS(status));
/* Replace filename in cuesheet with the new one */
strcpy(tr->filename, c2t_to_filename);
/* We cant free the strings c2t_from and c2t_to because they are
part of the environement. */
free(c2t_to_filename);
}
/* Loop through tracklist and convert files if a converter is available */
void
convert_files(struct trackspec *tr)
{
if (debug) fprintf(stderr, "Converting files\n");
while (tr != NULL) {
do_track(tr);
trackno++;
tr = tr->next;
}
}
|
