sdl-ios-xcode: src/file/SDL

annotate src/file/SDL_rwops.c @ 1446:47bf1767c4ca

Date: Mon, 27 Feb 2006 02:17:29 +0100 From: "William Petiot [exoide]" Subject: Re: [SDL] cvs version: questions regarding HAVE_STDIO_H in standard w I managed to get a first implementation of it, which I tested for "simple" use with tests sample apps, they work ok. I think this needs more tests. Here is the diff against CVS/SDL12, attached.

author	Sam Lantinga <slouken@libsdl.org>
date	Mon, 27 Feb 2006 03:48:48 +0000
parents	d910939febfa
children	515df0086eb7

rev	line source
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	2 SDL - Simple DirectMedia Layer
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1269 diff changeset	3 Copyright (C) 1997-2006 Sam Lantinga
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	4
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	5 This library is free software; you can redistribute it and/or
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1269 diff changeset	6 modify it under the terms of the GNU Lesser General Public
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	7 License as published by the Free Software Foundation; either
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1269 diff changeset	8 version 2.1 of the License, or (at your option) any later version.
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	9
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	10 This library is distributed in the hope that it will be useful,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1269 diff changeset	13 Lesser General Public License for more details.
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	14
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1269 diff changeset	15 You should have received a copy of the GNU Lesser General Public
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1269 diff changeset	16 License along with this library; if not, write to the Free Software
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1269 diff changeset	17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	18
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	19 Sam Lantinga
252 e8157fcb3114 Updated the source with the correct e-mail address Sam Lantinga <slouken@libsdl.org> parents: 36 diff changeset	20 slouken@libsdl.org
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	21 */
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	22 #include "SDL_config.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	23
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	24 /* This file provides a general interface for SDL to read and write
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	25 data sources. It can easily be extended to files, memory, etc.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	26 */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	27
1354 22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	28 #include "SDL_endian.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	29 #include "SDL_rwops.h"
1330 450721ad5436 It's now possible to build SDL without any C runtime at all on Windows, Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	30
1354 22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	31
1330 450721ad5436 It's now possible to build SDL without any C runtime at all on Windows, Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	32 #ifdef HAVE_STDIO_H
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	33
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	34 /* Functions to read/write stdio file pointers */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	35
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	36 static int stdio_seek(SDL_RWops *context, int offset, int whence)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	37 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	38 if ( fseek(context->hidden.stdio.fp, offset, whence) == 0 ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	39 return(ftell(context->hidden.stdio.fp));
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	40 } else {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	41 SDL_Error(SDL_EFSEEK);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	42 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	43 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	44 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	45 static int stdio_read(SDL_RWops context, void ptr, int size, int maxnum)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	46 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	47 size_t nread;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	48
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	49 nread = fread(ptr, size, maxnum, context->hidden.stdio.fp);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	50 if ( nread == 0 && ferror(context->hidden.stdio.fp) ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	51 SDL_Error(SDL_EFREAD);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	52 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	53 return(nread);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	54 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	55 static int stdio_write(SDL_RWops context, const void ptr, int size, int num)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	56 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	57 size_t nwrote;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	58
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	59 nwrote = fwrite(ptr, size, num, context->hidden.stdio.fp);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	60 if ( nwrote == 0 && ferror(context->hidden.stdio.fp) ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	61 SDL_Error(SDL_EFWRITE);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	62 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	63 return(nwrote);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	64 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	65 static int stdio_close(SDL_RWops *context)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	66 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	67 if ( context ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	68 if ( context->hidden.stdio.autoclose ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	69 /* WARNING: Check the return value here! */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	70 fclose(context->hidden.stdio.fp);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	71 }
1202 0748fbb272e7 Matched SDL_AllowRW and SDL_FreeRW calls in SDL_rwops.c ... Ryan C. Gordon <icculus@icculus.org> parents: 1078 diff changeset	72 SDL_FreeRW(context);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	73 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	74 return(0);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	75 }
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	76 #else /* HAVE_STDIO_H */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	77
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	78 #ifdef __WIN32__
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	79 #define WINDOWS_LEAN_AND_MEAN
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	80 #include <windows.h>
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	81
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	82 static int win32_file_open(SDL_RWops context, const char filename, const char *mode) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	83
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	84 UINT old_error_mode;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	85 HANDLE h;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	86 DWORD r_right, w_right;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	87 DWORD must_exist, truncate;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	88 int a_mode;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	89
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	90 if (!context \|\| !filename \|\| !mode)
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	91 return -1;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	92
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	93 context->hidden.win32io.h = INVALID_HANDLE_VALUE; /* mark this as unusable */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	94
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	95 /* "r" = reading, file must exist */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	96 /* "w" = writing, truncate existing, file may not exist */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	97 /* "r+"= reading or writing, file must exist */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	98 /* "a" = writing, append file may not exist */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	99 /* "a+"= append + read, file may not exist */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	100 /* "w+" = read, write, truncate. file may not exist */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	101
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	102 must_exist = ( SDL_strchr(mode,'r') != NULL ) ? OPEN_EXISTING : 0;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	103 truncate = ( SDL_strchr(mode,'w') != NULL ) ? CREATE_ALWAYS : 0;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	104 r_right = ( SDL_strchr(mode,'+') != NULL \|\| must_exist ) ? GENERIC_READ : 0;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	105 a_mode = ( SDL_strchr(mode,'a') != NULL );
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	106 w_right = ( a_mode \|\| SDL_strchr(mode,'w') \|\| truncate ) ? GENERIC_WRITE : 0;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	107
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	108 if (!r_right && !w_right) /* inconsistent mode */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	109 return -1; /* failed (invalid call)*/
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	110
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	111 /* Do not open a dialog box if failure */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	112 old_error_mode = SetErrorMode(SEM_NOOPENFILEERRORBOX\|SEM_FAILCRITICALERRORS);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	113
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	114 h = CreateFile(filename, (w_right\|r_right), (w_right)? 0 : FILE_SHARE_READ,
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	115 NULL, (must_exist\|truncate), FILE_ATTRIBUTE_NORMAL,NULL);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	116
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	117 /* restore old behaviour */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	118 SetErrorMode(old_error_mode);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	119
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	120 if (h==INVALID_HANDLE_VALUE) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	121 SDL_SetError("Couldn't open %s",filename);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	122 return -2; /* failed (CreateFile) */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	123 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	124 context->hidden.win32io.h = h;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	125 context->hidden.win32io.append = a_mode;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	126
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	127 return 0; /* ok */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	128 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	129
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	130 static int win32_file_seek(SDL_RWops *context, int offset, int whence) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	131 DWORD win32whence;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	132 int file_pos;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	133
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	134 if (!context \|\| context->hidden.win32io.h == INVALID_HANDLE_VALUE) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	135 SDL_SetError("win32_file_seek: invalid context/file not opened");
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	136 return -1;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	137 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	138
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	139 switch (whence) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	140 case RW_SEEK_SET:
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	141 win32whence = FILE_BEGIN; break;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	142 case RW_SEEK_CUR:
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	143 win32whence = FILE_CURRENT; break;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	144 case RW_SEEK_END:
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	145 win32whence = FILE_END; break;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	146 default:
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	147 SDL_SetError("win32_file_seek: Unknown value for 'whence'");
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	148 return -1;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	149 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	150
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	151 file_pos = SetFilePointer(context->hidden.win32io.h,offset,NULL,win32whence);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	152
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	153 if ( file_pos != INVALID_SET_FILE_POINTER )
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	154 return file_pos; /* success */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	155
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	156 SDL_Error(SDL_EFSEEK);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	157 return -1; /* error */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	158 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	159
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	160 static int win32_file_read(SDL_RWops context, void ptr, int size, int maxnum) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	161
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	162 int total_bytes;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	163 DWORD byte_read,nread;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	164
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	165 total_bytes = size*maxnum;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	166
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	167 if (!context \|\| context->hidden.win32io.h == INVALID_HANDLE_VALUE \|\| total_bytes<=0 \|\| !size)
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	168 return 0;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	169
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	170 if (!ReadFile(context->hidden.win32io.h,ptr,total_bytes,&byte_read,NULL)) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	171 SDL_Error(SDL_EFREAD);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	172 return 0;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	173 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	174 nread = byte_read/size;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	175 return nread;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	176 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	177
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	178 static int win32_file_write(SDL_RWops context, const void ptr, int size, int num) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	179
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	180 int total_bytes;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	181 DWORD byte_written,nwritten;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	182
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	183 total_bytes = size*num;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	184
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	185 if (!context \|\| context->hidden.win32io.h==INVALID_HANDLE_VALUE \|\| total_bytes<=0 \|\| !size)
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	186 return 0;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	187
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	188 /* if in append mode, we must go to the EOF before write */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	189 if (context->hidden.win32io.append) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	190 if ( SetFilePointer(context->hidden.win32io.h,0L,NULL,FILE_END) == INVALID_SET_FILE_POINTER ) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	191 SDL_Error(SDL_EFWRITE);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	192 return 0;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	193 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	194 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	195
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	196 if (!WriteFile(context->hidden.win32io.h,ptr,total_bytes,&byte_written,NULL)) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	197 SDL_Error(SDL_EFWRITE);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	198 return 0;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	199 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	200
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	201 nwritten = byte_written/size;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	202 return nwritten;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	203 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	204
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	205 static int win32_file_close(SDL_RWops *context) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	206
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	207 if ( context ) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	208 if (context->hidden.win32io.h != INVALID_HANDLE_VALUE) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	209 CloseHandle(context->hidden.win32io.h);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	210 context->hidden.win32io.h = INVALID_HANDLE_VALUE; /* to be sure */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	211 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	212 SDL_FreeRW(context);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	213 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	214 return(0);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	215 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	216
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	217
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	218
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	219 #endif /* __WIN32__ */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	220 #endif /* !HAVE_STDIO_H */
1330 450721ad5436 It's now possible to build SDL without any C runtime at all on Windows, Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	221
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	222 /* Functions to read/write memory pointers */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	223
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	224 static int mem_seek(SDL_RWops *context, int offset, int whence)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	225 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	226 Uint8 *newpos;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	227
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	228 switch (whence) {
1330 450721ad5436 It's now possible to build SDL without any C runtime at all on Windows, Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	229 case RW_SEEK_SET:
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	230 newpos = context->hidden.mem.base+offset;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	231 break;
1330 450721ad5436 It's now possible to build SDL without any C runtime at all on Windows, Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	232 case RW_SEEK_CUR:
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	233 newpos = context->hidden.mem.here+offset;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	234 break;
1330 450721ad5436 It's now possible to build SDL without any C runtime at all on Windows, Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	235 case RW_SEEK_END:
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	236 newpos = context->hidden.mem.stop+offset;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	237 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	238 default:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	239 SDL_SetError("Unknown value for 'whence'");
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	240 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	241 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	242 if ( newpos < context->hidden.mem.base ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	243 newpos = context->hidden.mem.base;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	244 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	245 if ( newpos > context->hidden.mem.stop ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	246 newpos = context->hidden.mem.stop;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	247 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	248 context->hidden.mem.here = newpos;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	249 return(context->hidden.mem.here-context->hidden.mem.base);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	250 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	251 static int mem_read(SDL_RWops context, void ptr, int size, int maxnum)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	252 {
1078 e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	253 int total_bytes;
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	254 int mem_available;
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	255
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	256 total_bytes = (maxnum * size);
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	257 if ( (maxnum <= 0) \|\| (size <= 0) \|\| ((total_bytes / maxnum) != size) ) {
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	258 return 0;
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	259 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	260
1078 e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	261 mem_available = (context->hidden.mem.stop - context->hidden.mem.here);
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	262 if (total_bytes > mem_available) {
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	263 total_bytes = mem_available;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	264 }
1078 e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	265
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	266 SDL_memcpy(ptr, context->hidden.mem.here, total_bytes);
1078 e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	267 context->hidden.mem.here += total_bytes;
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	268
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	269 return (total_bytes / size);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	270 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	271 static int mem_write(SDL_RWops context, const void ptr, int size, int num)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	272 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	273 if ( (context->hidden.mem.here + (num*size)) > context->hidden.mem.stop ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	274 num = (context->hidden.mem.stop-context->hidden.mem.here)/size;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	275 }
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	276 SDL_memcpy(context->hidden.mem.here, ptr, num*size);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	277 context->hidden.mem.here += num*size;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	278 return(num);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	279 }
764 974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	280 static int mem_writeconst(SDL_RWops context, const void ptr, int size, int num)
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	281 {
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	282 SDL_SetError("Can't write to read-only memory");
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	283 return(-1);
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	284 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	285 static int mem_close(SDL_RWops *context)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	286 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	287 if ( context ) {
1202 0748fbb272e7 Matched SDL_AllowRW and SDL_FreeRW calls in SDL_rwops.c ... Ryan C. Gordon <icculus@icculus.org> parents: 1078 diff changeset	288 SDL_FreeRW(context);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	289 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	290 return(0);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	291 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	292
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	293 /* Functions to create SDL_RWops structures from various data sources */
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	294 #ifdef __WIN32__
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	295 /* Aggh. You can't (apparently) open a file in an application and
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	296 read from it in a DLL.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	297 */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	298 static int in_sdl = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	299 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	300
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	301 #ifdef __MACOS__
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	302 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	303 * translate unix-style slash-separated filename to mac-style colon-separated
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	304 * name; return malloced string
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	305 */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	306 static char unix_to_mac(const char file)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	307 {
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	308 int flen = SDL_strlen(file);
3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	309 char *path = SDL_malloc(flen + 2);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	310 const char *src = file;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	311 char *dst = path;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	312 if(*src == '/') {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	313 /* really depends on filesystem layout, hope for the best */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	314 src++;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	315 } else {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	316 /* Check if this is a MacOS path to begin with */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	317 if(*src != ':')
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	318 dst++ = ':'; / relative paths begin with ':' */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	319 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	320 while(src < file + flen) {
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	321 const char *end = SDL_strchr(src, '/');
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	322 int len;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	323 if(!end)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	324 end = file + flen; /* last component */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	325 len = end - src;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	326 if(len == 0 \|\| (len == 1 && src[0] == '.')) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	327 /* remove repeated slashes and . */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	328 } else {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	329 if(len == 2 && src[0] == '.' && src[1] == '.') {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	330 /* replace .. with the empty string */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	331 } else {
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	332 SDL_memcpy(dst, src, len);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	333 dst += len;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	334 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	335 if(end < file + flen)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	336 *dst++ = ':';
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	337 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	338 src = end + 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	339 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	340 *dst++ = '\0';
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	341 return path;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	342 }
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	343 #endif /* __MACOS__ */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	344
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	345 SDL_RWops SDL_RWFromFile(const char file, const char *mode)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	346 {
1330 450721ad5436 It's now possible to build SDL without any C runtime at all on Windows, Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	347 SDL_RWops *rwops = NULL;
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows, Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	348 #ifdef HAVE_STDIO_H
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	349 FILE *fp;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	350
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	351 #ifdef __MACOS__
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	352 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	353 char *mpath = unix_to_mac(file);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	354 fp = fopen(mpath, mode);
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	355 SDL_free(mpath);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	356 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	357 #else
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	358 fp = fopen(file, mode);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	359 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	360 if ( fp == NULL ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	361 SDL_SetError("Couldn't open %s", file);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	362 } else {
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	363 #ifdef __WIN32__
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	364 in_sdl = 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	365 rwops = SDL_RWFromFP(fp, 1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	366 in_sdl = 0;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	367 #else
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	368 rwops = SDL_RWFromFP(fp, 1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	369 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	370 }
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	371 #else /* HAVE_STDIO_H */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	372 #ifdef __WIN32__
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	373 rwops = SDL_AllocRW();
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	374 rwops->hidden.win32io.h = INVALID_HANDLE_VALUE;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	375 if (win32_file_open(rwops,file,mode)) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	376 SDL_FreeRW(rwops);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	377 return NULL;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	378 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	379 rwops->seek = win32_file_seek;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	380 rwops->read = win32_file_read;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	381 rwops->write = win32_file_write;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	382 rwops->close = win32_file_close;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	383 #endif /* __WIN32__ */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	384 #endif /* !HAVE_STDIO_H */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	385 return(rwops);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	386 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	387
1330 450721ad5436 It's now possible to build SDL without any C runtime at all on Windows, Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	388 #ifdef HAVE_STDIO_H
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	389 SDL_RWops SDL_RWFromFP(FILE fp, int autoclose)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	390 {
1330 450721ad5436 It's now possible to build SDL without any C runtime at all on Windows, Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	391 SDL_RWops *rwops = NULL;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	392
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	393 #ifdef __WIN32__
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	394 if ( ! in_sdl ) {
1269 905d5b482f2a Some explanation on why SDL_RWFromFP doesn't always work on Win32 Sam Lantinga <slouken@libsdl.org> parents: 1202 diff changeset	395 /* It's when SDL and the app are compiled with different C runtimes */
543 522e5202014d * empty log message * Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	396 SDL_SetError("You can't pass a FILE pointer to a DLL (?)");
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	397 /return(NULL);/
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	398 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	399 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	400 rwops = SDL_AllocRW();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	401 if ( rwops != NULL ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	402 rwops->seek = stdio_seek;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	403 rwops->read = stdio_read;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	404 rwops->write = stdio_write;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	405 rwops->close = stdio_close;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	406 rwops->hidden.stdio.fp = fp;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	407 rwops->hidden.stdio.autoclose = autoclose;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	408 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	409 return(rwops);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	410 }
1330 450721ad5436 It's now possible to build SDL without any C runtime at all on Windows, Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	411 #endif /* HAVE_STDIO_H */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	412
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	413 SDL_RWops SDL_RWFromMem(void mem, int size)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	414 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	415 SDL_RWops *rwops;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	416
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	417 rwops = SDL_AllocRW();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	418 if ( rwops != NULL ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	419 rwops->seek = mem_seek;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	420 rwops->read = mem_read;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	421 rwops->write = mem_write;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	422 rwops->close = mem_close;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	423 rwops->hidden.mem.base = (Uint8 *)mem;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	424 rwops->hidden.mem.here = rwops->hidden.mem.base;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	425 rwops->hidden.mem.stop = rwops->hidden.mem.base+size;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	426 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	427 return(rwops);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	428 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	429
764 974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	430 SDL_RWops SDL_RWFromConstMem(const void mem, int size)
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	431 {
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	432 SDL_RWops *rwops;
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	433
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	434 rwops = SDL_AllocRW();
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	435 if ( rwops != NULL ) {
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	436 rwops->seek = mem_seek;
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	437 rwops->read = mem_read;
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	438 rwops->write = mem_writeconst;
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	439 rwops->close = mem_close;
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	440 rwops->hidden.mem.base = (Uint8 *)mem;
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	441 rwops->hidden.mem.here = rwops->hidden.mem.base;
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	442 rwops->hidden.mem.stop = rwops->hidden.mem.base+size;
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	443 }
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	444 return(rwops);
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	445 }
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	446
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	447 SDL_RWops *SDL_AllocRW(void)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	448 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	449 SDL_RWops *area;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	450
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	451 area = (SDL_RWops )SDL_malloc(sizeof area);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	452 if ( area == NULL ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	453 SDL_OutOfMemory();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	454 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	455 return(area);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	456 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	457
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	458 void SDL_FreeRW(SDL_RWops *area)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	459 {
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	460 SDL_free(area);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	461 }
1354 22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	462
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	463 /* Functions for dynamically reading and writing endian-specific values */
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	464
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	465 Uint16 SDL_ReadLE16 (SDL_RWops *src)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	466 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	467 Uint16 value;
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	468
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	469 SDL_RWread(src, &value, (sizeof value), 1);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	470 return(SDL_SwapLE16(value));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	471 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	472 Uint16 SDL_ReadBE16 (SDL_RWops *src)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	473 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	474 Uint16 value;
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	475
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	476 SDL_RWread(src, &value, (sizeof value), 1);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	477 return(SDL_SwapBE16(value));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	478 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	479 Uint32 SDL_ReadLE32 (SDL_RWops *src)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	480 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	481 Uint32 value;
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	482
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	483 SDL_RWread(src, &value, (sizeof value), 1);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	484 return(SDL_SwapLE32(value));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	485 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	486 Uint32 SDL_ReadBE32 (SDL_RWops *src)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	487 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	488 Uint32 value;
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	489
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	490 SDL_RWread(src, &value, (sizeof value), 1);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	491 return(SDL_SwapBE32(value));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	492 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	493 Uint64 SDL_ReadLE64 (SDL_RWops *src)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	494 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	495 Uint64 value;
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	496
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	497 SDL_RWread(src, &value, (sizeof value), 1);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	498 return(SDL_SwapLE64(value));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	499 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	500 Uint64 SDL_ReadBE64 (SDL_RWops *src)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	501 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	502 Uint64 value;
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	503
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	504 SDL_RWread(src, &value, (sizeof value), 1);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	505 return(SDL_SwapBE64(value));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	506 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	507
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	508 int SDL_WriteLE16 (SDL_RWops *dst, Uint16 value)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	509 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	510 value = SDL_SwapLE16(value);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	511 return(SDL_RWwrite(dst, &value, (sizeof value), 1));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	512 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	513 int SDL_WriteBE16 (SDL_RWops *dst, Uint16 value)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	514 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	515 value = SDL_SwapBE16(value);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	516 return(SDL_RWwrite(dst, &value, (sizeof value), 1));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	517 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	518 int SDL_WriteLE32 (SDL_RWops *dst, Uint32 value)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	519 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	520 value = SDL_SwapLE32(value);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	521 return(SDL_RWwrite(dst, &value, (sizeof value), 1));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	522 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	523 int SDL_WriteBE32 (SDL_RWops *dst, Uint32 value)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	524 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	525 value = SDL_SwapBE32(value);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	526 return(SDL_RWwrite(dst, &value, (sizeof value), 1));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	527 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	528 int SDL_WriteLE64 (SDL_RWops *dst, Uint64 value)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	529 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	530 value = SDL_SwapLE64(value);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	531 return(SDL_RWwrite(dst, &value, (sizeof value), 1));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	532 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	533 int SDL_WriteBE64 (SDL_RWops *dst, Uint64 value)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	534 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	535 value = SDL_SwapBE64(value);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	536 return(SDL_RWwrite(dst, &value, (sizeof value), 1));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	537 }

Mercurial > sdl-ios-xcode

annotate src/file/SDL_rwops.c @ 1446:47bf1767c4ca