diff options
Diffstat (limited to 'apps/plugins/xrick/system/sysfile_rockbox.c')
-rw-r--r-- | apps/plugins/xrick/system/sysfile_rockbox.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/apps/plugins/xrick/system/sysfile_rockbox.c b/apps/plugins/xrick/system/sysfile_rockbox.c new file mode 100644 index 0000000000..06227caec1 --- /dev/null +++ b/apps/plugins/xrick/system/sysfile_rockbox.c | |||
@@ -0,0 +1,122 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Port of xrick, a Rick Dangerous clone, to Rockbox. | ||
11 | * See http://www.bigorno.net/xrick/ | ||
12 | * | ||
13 | * Copyright (C) 2008-2014 Pierluigi Vicinanza | ||
14 | * | ||
15 | * This program is free software; you can redistribute it and/or | ||
16 | * modify it under the terms of the GNU General Public License | ||
17 | * as published by the Free Software Foundation; either version 2 | ||
18 | * of the License, or (at your option) any later version. | ||
19 | * | ||
20 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
21 | * KIND, either express or implied. | ||
22 | * | ||
23 | ****************************************************************************/ | ||
24 | |||
25 | #include "xrick/system/system.h" | ||
26 | |||
27 | #include "xrick/config.h" | ||
28 | #include "xrick/util.h" | ||
29 | |||
30 | #include "plugin.h" | ||
31 | |||
32 | #define XRICK_GAME_DIR ROCKBOX_DIR "/xrick/" | ||
33 | |||
34 | /* | ||
35 | * Global variables | ||
36 | */ | ||
37 | const char *sysfile_defaultPath = XRICK_GAME_DIR; | ||
38 | |||
39 | /* | ||
40 | * Local variables | ||
41 | */ | ||
42 | static char *rootPath = NULL; | ||
43 | |||
44 | /* | ||
45 | * | ||
46 | */ | ||
47 | bool sysfile_setRootPath(const char *name) | ||
48 | { | ||
49 | rootPath = u_strdup(name); | ||
50 | return (rootPath != NULL); | ||
51 | } | ||
52 | |||
53 | /* | ||
54 | * | ||
55 | */ | ||
56 | void sysfile_clearRootPath() | ||
57 | { | ||
58 | sysmem_pop(rootPath); | ||
59 | rootPath = NULL; | ||
60 | } | ||
61 | |||
62 | /* | ||
63 | * Open a data file. | ||
64 | */ | ||
65 | file_t sysfile_open(const char *name) | ||
66 | { | ||
67 | long fd; | ||
68 | |||
69 | size_t fullPathLength = rb->strlen(rootPath) + rb->strlen(name) + 2; | ||
70 | char *fullPath = sysmem_push(fullPathLength); | ||
71 | if (!fullPath) | ||
72 | { | ||
73 | return NULL; | ||
74 | } | ||
75 | rb->snprintf(fullPath, fullPathLength, "%s/%s", rootPath, name); | ||
76 | fd = rb->open(fullPath, O_RDONLY); | ||
77 | sysmem_pop(fullPath); | ||
78 | |||
79 | /* | ||
80 | * note: I've never seen zero/NULL being used as a file descriptor under Rockbox. | ||
81 | * Putting a check here in case this will ever happen (will need a fix). | ||
82 | */ | ||
83 | if (fd == 0) | ||
84 | { | ||
85 | sys_error("(file) unsupported file descriptor (zero/NULL) being used"); | ||
86 | } | ||
87 | if (fd < 0) | ||
88 | { | ||
89 | return NULL; | ||
90 | } | ||
91 | |||
92 | return (file_t)fd; | ||
93 | } | ||
94 | |||
95 | /* | ||
96 | * Read a file within a data archive. | ||
97 | */ | ||
98 | int sysfile_read(file_t file, void *buf, size_t size, size_t count) | ||
99 | { | ||
100 | long fd = (long)file; | ||
101 | return (rb->read(fd, buf, size * count) / size); | ||
102 | } | ||
103 | |||
104 | /* | ||
105 | * Seek. | ||
106 | */ | ||
107 | int sysfile_seek(file_t file, long offset, int origin) | ||
108 | { | ||
109 | long fd = (long)file; | ||
110 | return rb->lseek(fd, offset, origin); | ||
111 | } | ||
112 | |||
113 | /* | ||
114 | * Close a file within a data archive. | ||
115 | */ | ||
116 | void sysfile_close(file_t file) | ||
117 | { | ||
118 | long fd = (long)file; | ||
119 | rb->close(fd); | ||
120 | } | ||
121 | |||
122 | /* eof */ | ||