sdl-ios-xcode: src/file/SDL

annotate src/file/SDL_rwops.c @ 1769:290b5baf2fca

Fixed bug #215 The current SVN trunk is missing the SDLCALL specifier at numerous locations. It has to be added for all (possibly user provided) callbacks. I stumbled over this while creating a makefile for the OpenWatcom compiler for Win32.

author	Sam Lantinga <slouken@libsdl.org>
date	Sun, 07 May 2006 03:40:06 +0000
parents	8dfa9a6d69a5
children	782fd950bd46 c121d94672cb e85e65aec22f

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
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	32 #if defined(__WIN32__)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	33
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	34 /* Functions to read/write Win32 API file pointers */
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	35 /* Will not use it on WinCE because stdio is buffered, it means
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	36 faster, and all stdio functions anyway are embedded in coredll.dll -
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	37 the main wince dll*/
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	38
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	39 #define WINDOWS_LEAN_AND_MEAN
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	40 #include <windows.h>
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	41
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	42 #ifndef INVALID_SET_FILE_POINTER
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	43 #define INVALID_SET_FILE_POINTER 0xFFFFFFFF
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	44 #endif
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	45
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	46 static int SDLCALL win32_file_open(SDL_RWops context, const char filename, const char *mode)
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	47 {
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	48 #ifndef _WIN32_WCE
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	49 UINT old_error_mode;
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	50 #endif
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	51 HANDLE h;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	52 DWORD r_right, w_right;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	53 DWORD must_exist, truncate;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	54 int a_mode;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	55
1455 f487bb150acc Hah, standard stdio code crashed on the test case. Sam Lantinga <slouken@libsdl.org> parents: 1453 diff changeset	56 if (!context)
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	57 return -1;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	58
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	59 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	60
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	61 /* "r" = reading, file must exist */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	62 /* "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	63 /* "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	64 /* "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	65 /* "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	66 /* "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	67
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	68 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	69 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	70 r_right = ( SDL_strchr(mode,'+') != NULL \|\| must_exist ) ? GENERIC_READ : 0;
1453 2eb75f8a32ca Date: Mon, 27 Feb 2006 17:01:43 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1447 diff changeset	71 a_mode = ( SDL_strchr(mode,'a') != NULL ) ? OPEN_ALWAYS : 0;
2eb75f8a32ca Date: Mon, 27 Feb 2006 17:01:43 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1447 diff changeset	72 w_right = ( a_mode \|\| SDL_strchr(mode,'+') \|\| truncate ) ? GENERIC_WRITE : 0;
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	73
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	74 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	75 return -1; /* failed (invalid call)*/
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	76
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	77 #ifdef _WIN32_WCE
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	78 {
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	79 size_t size = SDL_strlen(filename)+1;
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	80 wchar_t *filenameW = SDL_stack_alloc(wchar_t, size);
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	81
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	82 if ( MultiByteToWideChar(CP_UTF8, 0, filename, -1, filenameW, size) == 0 ) {
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	83 SDL_SetError("Unable to convert filename to Unicode");
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	84 SDL_stack_free(filenameW);
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	85 return -1;
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	86 }
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	87 h = CreateFile(filenameW, (w_right\|r_right), (w_right)? 0 : FILE_SHARE_READ,
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	88 NULL, (must_exist\|truncate\|a_mode), FILE_ATTRIBUTE_NORMAL,NULL);
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	89 SDL_stack_free(filenameW);
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	90 }
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	91 #else
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	92 /* Do not open a dialog box if failure */
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	93 old_error_mode = SetErrorMode(SEM_NOOPENFILEERRORBOX\|SEM_FAILCRITICALERRORS);
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	94
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	95 h = CreateFile(filename, (w_right\|r_right), (w_right)? 0 : FILE_SHARE_READ,
1453 2eb75f8a32ca Date: Mon, 27 Feb 2006 17:01:43 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1447 diff changeset	96 NULL, (must_exist\|truncate\|a_mode), FILE_ATTRIBUTE_NORMAL,NULL);
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	97
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	98 /* restore old behaviour */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	99 SetErrorMode(old_error_mode);
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	100 #endif /* _WIN32_WCE */
1446 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 if (h==INVALID_HANDLE_VALUE) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	103 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	104 return -2; /* failed (CreateFile) */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	105 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	106 context->hidden.win32io.h = h;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	107 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	108
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	109 return 0; /* ok */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	110 }
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	111 static int SDLCALL win32_file_seek(SDL_RWops *context, int offset, int whence)
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	112 {
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	113 DWORD win32whence;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	114 int file_pos;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	115
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	116 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	117 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	118 return -1;
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
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	121 switch (whence) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	122 case RW_SEEK_SET:
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	123 win32whence = FILE_BEGIN; break;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	124 case RW_SEEK_CUR:
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	125 win32whence = FILE_CURRENT; break;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	126 case RW_SEEK_END:
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	127 win32whence = FILE_END; break;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	128 default:
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	129 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	130 return -1;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	131 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	132
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	133 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	134
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	135 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	136 return file_pos; /* success */
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 SDL_Error(SDL_EFSEEK);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	139 return -1; /* error */
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	140 }
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	141 static int SDLCALL win32_file_read(SDL_RWops context, void ptr, int size, int maxnum)
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	142 {
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	143
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	144 int total_bytes;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	145 DWORD byte_read,nread;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	146
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	147 total_bytes = size*maxnum;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	148
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	149 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	150 return 0;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	151
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	152 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	153 SDL_Error(SDL_EFREAD);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	154 return 0;
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 nread = byte_read/size;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	157 return nread;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	158 }
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	159 static int SDLCALL win32_file_write(SDL_RWops context, const void ptr, int size, int num)
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	160 {
1446 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_written,nwritten;
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*num;
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 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	171 if (context->hidden.win32io.append) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	172 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	173 SDL_Error(SDL_EFWRITE);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	174 return 0;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	175 }
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 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	179 SDL_Error(SDL_EFWRITE);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	180 return 0;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	181 }
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 nwritten = byte_written/size;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	184 return nwritten;
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	185 }
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	186 static int SDLCALL win32_file_close(SDL_RWops *context)
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	187 {
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	188
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	189 if ( context ) {
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	190 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	191 CloseHandle(context->hidden.win32io.h);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	192 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	193 }
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	194 SDL_FreeRW(context);
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 return(0);
47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	197 }
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	198 #endif /* __WIN32__ */
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	199
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	200 #ifdef HAVE_STDIO_H
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	201
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	202 /* Functions to read/write stdio file pointers */
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	203
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	204 static int SDLCALL stdio_seek(SDL_RWops *context, int offset, int whence)
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	205 {
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	206 if ( fseek(context->hidden.stdio.fp, offset, whence) == 0 ) {
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	207 return(ftell(context->hidden.stdio.fp));
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	208 } else {
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	209 SDL_Error(SDL_EFSEEK);
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	210 return(-1);
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	211 }
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	212 }
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	213 static int SDLCALL stdio_read(SDL_RWops context, void ptr, int size, int maxnum)
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	214 {
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	215 size_t nread;
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	216
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	217 nread = fread(ptr, size, maxnum, context->hidden.stdio.fp);
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	218 if ( nread == 0 && ferror(context->hidden.stdio.fp) ) {
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	219 SDL_Error(SDL_EFREAD);
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	220 }
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	221 return(nread);
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	222 }
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	223 static int SDLCALL stdio_write(SDL_RWops context, const void ptr, int size, int num)
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	224 {
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	225 size_t nwrote;
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	226
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	227 nwrote = fwrite(ptr, size, num, context->hidden.stdio.fp);
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	228 if ( nwrote == 0 && ferror(context->hidden.stdio.fp) ) {
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	229 SDL_Error(SDL_EFWRITE);
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	230 }
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	231 return(nwrote);
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	232 }
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	233 static int SDLCALL stdio_close(SDL_RWops *context)
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	234 {
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	235 if ( context ) {
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	236 if ( context->hidden.stdio.autoclose ) {
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	237 /* WARNING: Check the return value here! */
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	238 fclose(context->hidden.stdio.fp);
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	239 }
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	240 SDL_FreeRW(context);
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	241 }
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	242 return(0);
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	243 }
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	244 #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	245
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	246 /* Functions to read/write memory pointers */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	247
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	248 static int SDLCALL mem_seek(SDL_RWops *context, int offset, int whence)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	249 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	250 Uint8 *newpos;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	251
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	252 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	253 case RW_SEEK_SET:
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	254 newpos = context->hidden.mem.base+offset;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	255 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	256 case RW_SEEK_CUR:
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	257 newpos = context->hidden.mem.here+offset;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	258 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	259 case RW_SEEK_END:
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	260 newpos = context->hidden.mem.stop+offset;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	261 break;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	262 default:
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	263 SDL_SetError("Unknown value for 'whence'");
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	264 return(-1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	265 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	266 if ( newpos < context->hidden.mem.base ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	267 newpos = context->hidden.mem.base;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	268 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	269 if ( newpos > context->hidden.mem.stop ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	270 newpos = context->hidden.mem.stop;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	271 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	272 context->hidden.mem.here = newpos;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	273 return(context->hidden.mem.here-context->hidden.mem.base);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	274 }
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	275 static int SDLCALL mem_read(SDL_RWops context, void ptr, int size, int maxnum)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	276 {
1456 84de7511f79f Fixed a bunch of 64-bit compatibility problems Sam Lantinga <slouken@libsdl.org> parents: 1455 diff changeset	277 size_t total_bytes;
84de7511f79f Fixed a bunch of 64-bit compatibility problems Sam Lantinga <slouken@libsdl.org> parents: 1455 diff changeset	278 size_t mem_available;
1078 e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	279
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	280 total_bytes = (maxnum * size);
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	281 if ( (maxnum <= 0) \|\| (size <= 0) \|\| ((total_bytes / maxnum) != (size_t) size) ) {
1078 e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	282 return 0;
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	283 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	284
1078 e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	285 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	286 if (total_bytes > mem_available) {
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	287 total_bytes = mem_available;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	288 }
1078 e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	289
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	290 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	291 context->hidden.mem.here += total_bytes;
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	292
e2ef6b7001fd Patch from Antonio SJ Musumeci: Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	293 return (total_bytes / size);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	294 }
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	295 static int SDLCALL mem_write(SDL_RWops context, const void ptr, int size, int num)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	296 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	297 if ( (context->hidden.mem.here + (num*size)) > context->hidden.mem.stop ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	298 num = (context->hidden.mem.stop-context->hidden.mem.here)/size;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	299 }
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	300 SDL_memcpy(context->hidden.mem.here, ptr, num*size);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	301 context->hidden.mem.here += num*size;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	302 return(num);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	303 }
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	304 static int SDLCALL mem_writeconst(SDL_RWops context, const void ptr, int size, int num)
764 974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	305 {
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	306 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	307 return(-1);
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	308 }
1769 290b5baf2fca Fixed bug #215 Sam Lantinga <slouken@libsdl.org> parents: 1465 diff changeset	309 static int SDLCALL mem_close(SDL_RWops *context)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	310 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	311 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	312 SDL_FreeRW(context);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	313 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	314 return(0);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	315 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	316
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	317
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	318 /* Functions to create SDL_RWops structures from various data sources */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	319
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	320 #ifdef __MACOS__
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	321 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	322 * translate unix-style slash-separated filename to mac-style colon-separated
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	323 * name; return malloced string
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	324 */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	325 static char unix_to_mac(const char file)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	326 {
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	327 int flen = SDL_strlen(file);
3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	328 char *path = SDL_malloc(flen + 2);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	329 const char *src = file;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	330 char *dst = path;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	331 if(*src == '/') {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	332 /* really depends on filesystem layout, hope for the best */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	333 src++;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	334 } else {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	335 /* Check if this is a MacOS path to begin with */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	336 if(*src != ':')
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	337 dst++ = ':'; / relative paths begin with ':' */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	338 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	339 while(src < file + flen) {
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	340 const char *end = SDL_strchr(src, '/');
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	341 int len;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	342 if(!end)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	343 end = file + flen; /* last component */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	344 len = end - src;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	345 if(len == 0 \|\| (len == 1 && src[0] == '.')) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	346 /* remove repeated slashes and . */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	347 } else {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	348 if(len == 2 && src[0] == '.' && src[1] == '.') {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	349 /* replace .. with the empty string */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	350 } else {
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	351 SDL_memcpy(dst, src, len);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	352 dst += len;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	353 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	354 if(end < file + flen)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	355 *dst++ = ':';
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	356 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	357 src = end + 1;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	358 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	359 *dst++ = '\0';
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	360 return path;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	361 }
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	362 #endif /* __MACOS__ */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	363
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	364 SDL_RWops SDL_RWFromFile(const char file, const char *mode)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	365 {
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	366 SDL_RWops *rwops = NULL;
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	367 #ifdef HAVE_STDIO_H
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	368 FILE *fp = NULL;
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	369 #endif
1455 f487bb150acc Hah, standard stdio code crashed on the test case. Sam Lantinga <slouken@libsdl.org> parents: 1453 diff changeset	370 if ( !file \|\| !file \|\| !mode \|\| !mode ) {
f487bb150acc Hah, standard stdio code crashed on the test case. Sam Lantinga <slouken@libsdl.org> parents: 1453 diff changeset	371 SDL_SetError("SDL_RWFromFile(): No file or no mode specified");
f487bb150acc Hah, standard stdio code crashed on the test case. Sam Lantinga <slouken@libsdl.org> parents: 1453 diff changeset	372 return NULL;
f487bb150acc Hah, standard stdio code crashed on the test case. Sam Lantinga <slouken@libsdl.org> parents: 1453 diff changeset	373 }
f487bb150acc Hah, standard stdio code crashed on the test case. Sam Lantinga <slouken@libsdl.org> parents: 1453 diff changeset	374
1465 8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks) Sam Lantinga <slouken@libsdl.org> parents: 1456 diff changeset	375 #if defined(__WIN32__)
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	376 rwops = SDL_AllocRW();
1453 2eb75f8a32ca Date: Mon, 27 Feb 2006 17:01:43 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1447 diff changeset	377 if (!rwops)
2eb75f8a32ca Date: Mon, 27 Feb 2006 17:01:43 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1447 diff changeset	378 return NULL; /* SDL_SetError already setup by SDL_AllocRW() */
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	379 rwops->hidden.win32io.h = INVALID_HANDLE_VALUE;
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	380 if (win32_file_open(rwops,file,mode)) {
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	381 SDL_FreeRW(rwops);
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	382 return NULL;
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	383 }
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	384 rwops->seek = win32_file_seek;
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	385 rwops->read = win32_file_read;
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	386 rwops->write = win32_file_write;
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	387 rwops->close = win32_file_close;
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	388
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	389 #elif HAVE_STDIO_H
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	390
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	391 #ifdef __MACOS__
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	392 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	393 char *mpath = unix_to_mac(file);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	394 fp = fopen(mpath, mode);
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	395 SDL_free(mpath);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	396 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	397 #else
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	398 fp = fopen(file, mode);
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 if ( fp == NULL ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	401 SDL_SetError("Couldn't open %s", file);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	402 } else {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	403 rwops = SDL_RWFromFP(fp, 1);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	404 }
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	405 #else
515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	406 SDL_SetError("SDL not compiled with stdio support");
1446 47bf1767c4ca Date: Mon, 27 Feb 2006 02:17:29 +0100 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	407 #endif /* !HAVE_STDIO_H */
1447 515df0086eb7 Prefer the raw Win32 API over stdio for file RWops Sam Lantinga <slouken@libsdl.org> parents: 1446 diff changeset	408
0 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 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	411
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	412 #ifdef HAVE_STDIO_H
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	413 SDL_RWops SDL_RWFromFP(FILE fp, int autoclose)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	414 {
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	415 SDL_RWops *rwops = NULL;
0 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 = stdio_seek;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	420 rwops->read = stdio_read;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	421 rwops->write = stdio_write;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	422 rwops->close = stdio_close;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	423 rwops->hidden.stdio.fp = fp;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	424 rwops->hidden.stdio.autoclose = autoclose;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	425 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	426 return(rwops);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	427 }
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	428 #endif /* HAVE_STDIO_H */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	429
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	430 SDL_RWops SDL_RWFromMem(void mem, int size)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	431 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	432 SDL_RWops *rwops;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	433
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	434 rwops = SDL_AllocRW();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	435 if ( rwops != NULL ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	436 rwops->seek = mem_seek;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	437 rwops->read = mem_read;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	438 rwops->write = mem_write;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	439 rwops->close = mem_close;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	440 rwops->hidden.mem.base = (Uint8 *)mem;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	441 rwops->hidden.mem.here = rwops->hidden.mem.base;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	442 rwops->hidden.mem.stop = rwops->hidden.mem.base+size;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	443 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	444 return(rwops);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	445 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	446
764 974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	447 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	448 {
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	449 SDL_RWops *rwops;
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	450
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	451 rwops = SDL_AllocRW();
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	452 if ( rwops != NULL ) {
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	453 rwops->seek = mem_seek;
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	454 rwops->read = mem_read;
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	455 rwops->write = mem_writeconst;
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	456 rwops->close = mem_close;
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	457 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	458 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	459 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	460 }
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	461 return(rwops);
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	462 }
974c0fb74bf8 Added function to create RWops from const memory: SDL_RWFromConstMem() Sam Lantinga <slouken@libsdl.org> parents: 543 diff changeset	463
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	464 SDL_RWops *SDL_AllocRW(void)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	465 {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	466 SDL_RWops *area;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	467
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	468 area = (SDL_RWops )SDL_malloc(sizeof area);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	469 if ( area == NULL ) {
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	470 SDL_OutOfMemory();
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	471 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	472 return(area);
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	473 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	474
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	475 void SDL_FreeRW(SDL_RWops *area)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	476 {
1336 3692456e7b0f Use SDL_ prefixed versions of C library functions. Sam Lantinga <slouken@libsdl.org> parents: 1330 diff changeset	477 SDL_free(area);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	478 }
1354 22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	479
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	480 /* 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	481
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	482 Uint16 SDL_ReadLE16 (SDL_RWops *src)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	483 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	484 Uint16 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 SDL_RWread(src, &value, (sizeof value), 1);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	487 return(SDL_SwapLE16(value));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	488 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	489 Uint16 SDL_ReadBE16 (SDL_RWops *src)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	490 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	491 Uint16 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 SDL_RWread(src, &value, (sizeof value), 1);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	494 return(SDL_SwapBE16(value));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	495 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	496 Uint32 SDL_ReadLE32 (SDL_RWops *src)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	497 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	498 Uint32 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 SDL_RWread(src, &value, (sizeof value), 1);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	501 return(SDL_SwapLE32(value));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	502 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	503 Uint32 SDL_ReadBE32 (SDL_RWops *src)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	504 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	505 Uint32 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 SDL_RWread(src, &value, (sizeof value), 1);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	508 return(SDL_SwapBE32(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 Uint64 SDL_ReadLE64 (SDL_RWops *src)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	511 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	512 Uint64 value;
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	513
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	514 SDL_RWread(src, &value, (sizeof value), 1);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	515 return(SDL_SwapLE64(value));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	516 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	517 Uint64 SDL_ReadBE64 (SDL_RWops *src)
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	518 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	519 Uint64 value;
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	520
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	521 SDL_RWread(src, &value, (sizeof value), 1);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	522 return(SDL_SwapBE64(value));
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	523 }
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 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	526 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	527 value = SDL_SwapLE16(value);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	528 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	529 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	530 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	531 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	532 value = SDL_SwapBE16(value);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	533 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	534 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	535 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	536 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	537 value = SDL_SwapLE32(value);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	538 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	539 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	540 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	541 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	542 value = SDL_SwapBE32(value);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	543 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	544 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	545 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	546 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	547 value = SDL_SwapLE64(value);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	548 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	549 }
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	550 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	551 {
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	552 value = SDL_SwapBE64(value);
22f39393668a Fixed build problem with SDL_string.c Sam Lantinga <slouken@libsdl.org> parents: 1338 diff changeset	553 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	554 }

Mercurial > sdl-ios-xcode

annotate src/file/SDL_rwops.c @ 1769:290b5baf2fca