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comparison decoders/timidity/common.c @ 199:2d887640d300

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Initial add.
author Ryan C. Gordon <icculus@icculus.org>
date Fri, 04 Jan 2002 06:49:49 +0000
parents
children 3da217bd0e48
comparison
equal deleted inserted replaced
198:f9a752f41ab6 199:2d887640d300
1 /*
2
3 TiMidity -- Experimental MIDI to WAVE converter
4 Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi>
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19
20 common.c
21
22 */
23
24 #if HAVE_CONFIG_H
25 # include <config.h>
26 #endif
27
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <string.h>
31
32 #include "SDL_sound.h"
33
34 #define __SDL_SOUND_INTERNAL__
35 #include "SDL_sound_internal.h"
36
37 #include "options.h"
38 #include "common.h"
39
40 /* The paths in this list will be tried whenever we're reading a file */
41 static PathList *pathlist = NULL; /* This is a linked list */
42
43 /* This is meant to find and open files for reading */
44 SDL_RWops *open_file(char *name)
45 {
46 SDL_RWops *rw;
47
48 if (!name || !(*name))
49 {
50 SNDDBG(("Attempted to open nameless file.\n"));
51 return 0;
52 }
53
54 /* First try the given name */
55
56 SNDDBG(("Trying to open %s\n", name));
57 if ((rw = SDL_RWFromFile(name, "rb")))
58 return rw;
59
60 if (name[0] != PATH_SEP)
61 {
62 char current_filename[1024];
63 PathList *plp = pathlist;
64 int l;
65
66 while (plp) /* Try along the path then */
67 {
68 *current_filename = 0;
69 l = strlen(plp->path);
70 if(l)
71 {
72 strcpy(current_filename, plp->path);
73 if(current_filename[l - 1] != PATH_SEP)
74 {
75 current_filename[l] = PATH_SEP;
76 current_filename[l + 1] = '\0';
77 }
78 }
79 strcat(current_filename, name);
80 SNDDBG(("Trying to open %s\n", current_filename));
81 if ((rw = SDL_RWFromFile(current_filename, "rb")))
82 return rw;
83 plp = plp->next;
84 }
85 }
86
87 /* Nothing could be opened. */
88 SNDDBG(("Could not open %s\n", name));
89 return 0;
90 }
91
92 /* This'll allocate memory or die. */
93 void *safe_malloc(size_t count)
94 {
95 void *p;
96
97 p = malloc(count);
98 if (p == NULL)
99 SNDDBG(("Sorry. Couldn't malloc %d bytes.\n", count));
100
101 return p;
102 }
103
104 /* This adds a directory to the path list */
105 void add_to_pathlist(char *s)
106 {
107 PathList *plp = safe_malloc(sizeof(PathList));
108
109 if (plp == NULL)
110 return;
111
112 plp->path = safe_malloc(strlen(s) + 1);
113 if (plp->path == NULL)
114 return;
115
116 strcpy(plp->path, s);
117 plp->next = pathlist;
118 pathlist = plp;
119 }
120
121 void free_pathlist(void)
122 {
123 PathList *plp = pathlist;
124 PathList *next;
125
126 while (plp)
127 {
128 next = plp->next;
129 free(plp);
130 plp = next;
131 }
132 }