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comparison src/file/SDL_rwops.c @ 1330:450721ad5436

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It's now possible to build SDL without any C runtime at all on Windows, using Visual C++ 2005
author Sam Lantinga <slouken@libsdl.org>
date Mon, 06 Feb 2006 08:28:51 +0000
parents c9b51268668f
children 3692456e7b0f
comparison
equal deleted inserted replaced
1329:bc67bbf87818 1330:450721ad5436
22 22
23 /* This file provides a general interface for SDL to read and write 23 /* This file provides a general interface for SDL to read and write
24 data sources. It can easily be extended to files, memory, etc. 24 data sources. It can easily be extended to files, memory, etc.
25 */ 25 */
26 26
27 #include <stdlib.h>
28 #include <stdio.h>
29 #include <string.h>
30
31 #include "SDL_error.h" 27 #include "SDL_error.h"
32 #include "SDL_rwops.h" 28 #include "SDL_rwops.h"
29 #include "SDL_stdlib.h"
30 #include "SDL_string.h"
31
32 #ifdef HAVE_STDIO_H
33 33
34 /* Functions to read/write stdio file pointers */ 34 /* Functions to read/write stdio file pointers */
35 35
36 static int stdio_seek(SDL_RWops *context, int offset, int whence) 36 static int stdio_seek(SDL_RWops *context, int offset, int whence)
37 { 37 {
72 SDL_FreeRW(context); 72 SDL_FreeRW(context);
73 } 73 }
74 return(0); 74 return(0);
75 } 75 }
76 76
77 #endif /* HAVE_STDIO_H */
78
77 /* Functions to read/write memory pointers */ 79 /* Functions to read/write memory pointers */
78 80
79 static int mem_seek(SDL_RWops *context, int offset, int whence) 81 static int mem_seek(SDL_RWops *context, int offset, int whence)
80 { 82 {
81 Uint8 *newpos; 83 Uint8 *newpos;
82 84
83 switch (whence) { 85 switch (whence) {
84 case SEEK_SET: 86 case RW_SEEK_SET:
85 newpos = context->hidden.mem.base+offset; 87 newpos = context->hidden.mem.base+offset;
86 break; 88 break;
87 case SEEK_CUR: 89 case RW_SEEK_CUR:
88 newpos = context->hidden.mem.here+offset; 90 newpos = context->hidden.mem.here+offset;
89 break; 91 break;
90 case SEEK_END: 92 case RW_SEEK_END:
91 newpos = context->hidden.mem.stop+offset; 93 newpos = context->hidden.mem.stop+offset;
92 break; 94 break;
93 default: 95 default:
94 SDL_SetError("Unknown value for 'whence'"); 96 SDL_SetError("Unknown value for 'whence'");
95 return(-1); 97 return(-1);
197 } 199 }
198 #endif /* macintosh */ 200 #endif /* macintosh */
199 201
200 SDL_RWops *SDL_RWFromFile(const char *file, const char *mode) 202 SDL_RWops *SDL_RWFromFile(const char *file, const char *mode)
201 { 203 {
204 SDL_RWops *rwops = NULL;
205 #ifdef HAVE_STDIO_H
202 FILE *fp; 206 FILE *fp;
203 SDL_RWops *rwops;
204
205 rwops = NULL;
206 207
207 #ifdef macintosh 208 #ifdef macintosh
208 { 209 {
209 char *mpath = unix_to_mac(file); 210 char *mpath = unix_to_mac(file);
210 fp = fopen(mpath, mode); 211 fp = fopen(mpath, mode);
222 in_sdl = 0; 223 in_sdl = 0;
223 #else 224 #else
224 rwops = SDL_RWFromFP(fp, 1); 225 rwops = SDL_RWFromFP(fp, 1);
225 #endif 226 #endif
226 } 227 }
228 #endif /* HAVE_STDIO_H */
227 return(rwops); 229 return(rwops);
228 } 230 }
229 231
232 #ifdef HAVE_STDIO_H
230 SDL_RWops *SDL_RWFromFP(FILE *fp, int autoclose) 233 SDL_RWops *SDL_RWFromFP(FILE *fp, int autoclose)
231 { 234 {
232 SDL_RWops *rwops; 235 SDL_RWops *rwops = NULL;
233 236
234 #ifdef WIN32 237 #ifdef WIN32
235 if ( ! in_sdl ) { 238 if ( ! in_sdl ) {
236 /* It's when SDL and the app are compiled with different C runtimes */ 239 /* It's when SDL and the app are compiled with different C runtimes */
237 SDL_SetError("You can't pass a FILE pointer to a DLL (?)"); 240 SDL_SetError("You can't pass a FILE pointer to a DLL (?)");
247 rwops->hidden.stdio.fp = fp; 250 rwops->hidden.stdio.fp = fp;
248 rwops->hidden.stdio.autoclose = autoclose; 251 rwops->hidden.stdio.autoclose = autoclose;
249 } 252 }
250 return(rwops); 253 return(rwops);
251 } 254 }
255 #endif /* HAVE_STDIO_H */
252 256
253 SDL_RWops *SDL_RWFromMem(void *mem, int size) 257 SDL_RWops *SDL_RWFromMem(void *mem, int size)
254 { 258 {
255 SDL_RWops *rwops; 259 SDL_RWops *rwops;
256 260