--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/project_files/Android-build/SDL-android-project/jni/SDL/src/file/SDL_rwops.c Sun Jan 29 18:05:35 2012 +0100
@@ -0,0 +1,678 @@
+/*
+ Simple DirectMedia Layer
+ Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
+
+ This software is provided 'as-is', without any express or implied
+ warranty. In no event will the authors be held liable for any damages
+ arising from the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+ claim that you wrote the original software. If you use this software
+ in a product, an acknowledgment in the product documentation would be
+ appreciated but is not required.
+ 2. Altered source versions must be plainly marked as such, and must not be
+ misrepresented as being the original software.
+ 3. This notice may not be removed or altered from any source distribution.
+*/
+#include "SDL_config.h"
+
+/* This file provides a general interface for SDL to read and write
+ data sources. It can easily be extended to files, memory, etc.
+*/
+
+#include "SDL_endian.h"
+#include "SDL_rwops.h"
+
+#ifdef __APPLE__
+#include "cocoa/SDL_rwopsbundlesupport.h"
+#endif /* __APPLE__ */
+
+#ifdef ANDROID
+#include "../core/android/SDL_android.h"
+#include <android/log.h>
+#endif
+
+#ifdef __NDS__
+/* include libfat headers for fatInitDefault(). */
+#include <fat.h>
+#endif /* __NDS__ */
+
+#ifdef __WIN32__
+
+/* Functions to read/write Win32 API file pointers */
+/* Will not use it on WinCE because stdio is buffered, it means
+ faster, and all stdio functions anyway are embedded in coredll.dll -
+ the main wince dll*/
+
+#include "../core/windows/SDL_windows.h"
+
+#ifndef INVALID_SET_FILE_POINTER
+#define INVALID_SET_FILE_POINTER 0xFFFFFFFF
+#endif
+
+#define READAHEAD_BUFFER_SIZE 1024
+
+static int SDLCALL
+windows_file_open(SDL_RWops * context, const char *filename, const char *mode)
+{
+#ifndef _WIN32_WCE
+ UINT old_error_mode;
+#endif
+ HANDLE h;
+ DWORD r_right, w_right;
+ DWORD must_exist, truncate;
+ int a_mode;
+
+ if (!context)
+ return -1; /* failed (invalid call) */
+
+ context->hidden.windowsio.h = INVALID_HANDLE_VALUE; /* mark this as unusable */
+ context->hidden.windowsio.buffer.data = NULL;
+ context->hidden.windowsio.buffer.size = 0;
+ context->hidden.windowsio.buffer.left = 0;
+
+ /* "r" = reading, file must exist */
+ /* "w" = writing, truncate existing, file may not exist */
+ /* "r+"= reading or writing, file must exist */
+ /* "a" = writing, append file may not exist */
+ /* "a+"= append + read, file may not exist */
+ /* "w+" = read, write, truncate. file may not exist */
+
+ must_exist = (SDL_strchr(mode, 'r') != NULL) ? OPEN_EXISTING : 0;
+ truncate = (SDL_strchr(mode, 'w') != NULL) ? CREATE_ALWAYS : 0;
+ r_right = (SDL_strchr(mode, '+') != NULL
+ || must_exist) ? GENERIC_READ : 0;
+ a_mode = (SDL_strchr(mode, 'a') != NULL) ? OPEN_ALWAYS : 0;
+ w_right = (a_mode || SDL_strchr(mode, '+')
+ || truncate) ? GENERIC_WRITE : 0;
+
+ if (!r_right && !w_right) /* inconsistent mode */
+ return -1; /* failed (invalid call) */
+
+ context->hidden.windowsio.buffer.data =
+ (char *) SDL_malloc(READAHEAD_BUFFER_SIZE);
+ if (!context->hidden.windowsio.buffer.data) {
+ SDL_OutOfMemory();
+ return -1;
+ }
+#ifdef _WIN32_WCE
+ {
+ LPTSTR tstr = WIN_UTF8ToString(filename);
+ h = CreateFile(tstr, (w_right | r_right),
+ (w_right) ? 0 : FILE_SHARE_READ, NULL,
+ (must_exist | truncate | a_mode),
+ FILE_ATTRIBUTE_NORMAL, NULL);
+ SDL_free(tstr);
+ }
+#else
+ /* Do not open a dialog box if failure */
+ old_error_mode =
+ SetErrorMode(SEM_NOOPENFILEERRORBOX | SEM_FAILCRITICALERRORS);
+
+ {
+ LPTSTR tstr = WIN_UTF8ToString(filename);
+ h = CreateFile(tstr, (w_right | r_right),
+ (w_right) ? 0 : FILE_SHARE_READ, NULL,
+ (must_exist | truncate | a_mode),
+ FILE_ATTRIBUTE_NORMAL, NULL);
+ SDL_free(tstr);
+ }
+
+ /* restore old behavior */
+ SetErrorMode(old_error_mode);
+#endif /* _WIN32_WCE */
+
+ if (h == INVALID_HANDLE_VALUE) {
+ SDL_free(context->hidden.windowsio.buffer.data);
+ context->hidden.windowsio.buffer.data = NULL;
+ SDL_SetError("Couldn't open %s", filename);
+ return -2; /* failed (CreateFile) */
+ }
+ context->hidden.windowsio.h = h;
+ context->hidden.windowsio.append = a_mode ? SDL_TRUE : SDL_FALSE;
+
+ return 0; /* ok */
+}
+
+static long SDLCALL
+windows_file_seek(SDL_RWops * context, long offset, int whence)
+{
+ DWORD windowswhence;
+ long file_pos;
+
+ if (!context || context->hidden.windowsio.h == INVALID_HANDLE_VALUE) {
+ SDL_SetError("windows_file_seek: invalid context/file not opened");
+ return -1;
+ }
+
+ /* FIXME: We may be able to satisfy the seek within buffered data */
+ if (whence == RW_SEEK_CUR && context->hidden.windowsio.buffer.left) {
+ offset -= (long)context->hidden.windowsio.buffer.left;
+ }
+ context->hidden.windowsio.buffer.left = 0;
+
+ switch (whence) {
+ case RW_SEEK_SET:
+ windowswhence = FILE_BEGIN;
+ break;
+ case RW_SEEK_CUR:
+ windowswhence = FILE_CURRENT;
+ break;
+ case RW_SEEK_END:
+ windowswhence = FILE_END;
+ break;
+ default:
+ SDL_SetError("windows_file_seek: Unknown value for 'whence'");
+ return -1;
+ }
+
+ file_pos =
+ SetFilePointer(context->hidden.windowsio.h, offset, NULL, windowswhence);
+
+ if (file_pos != INVALID_SET_FILE_POINTER)
+ return file_pos; /* success */
+
+ SDL_Error(SDL_EFSEEK);
+ return -1; /* error */
+}
+
+static size_t SDLCALL
+windows_file_read(SDL_RWops * context, void *ptr, size_t size, size_t maxnum)
+{
+ size_t total_need;
+ size_t total_read = 0;
+ size_t read_ahead;
+ DWORD byte_read;
+
+ total_need = size * maxnum;
+
+ if (!context || context->hidden.windowsio.h == INVALID_HANDLE_VALUE
+ || !total_need)
+ return 0;
+
+ if (context->hidden.windowsio.buffer.left > 0) {
+ void *data = (char *) context->hidden.windowsio.buffer.data +
+ context->hidden.windowsio.buffer.size -
+ context->hidden.windowsio.buffer.left;
+ read_ahead =
+ SDL_min(total_need, context->hidden.windowsio.buffer.left);
+ SDL_memcpy(ptr, data, read_ahead);
+ context->hidden.windowsio.buffer.left -= read_ahead;
+
+ if (read_ahead == total_need) {
+ return maxnum;
+ }
+ ptr = (char *) ptr + read_ahead;
+ total_need -= read_ahead;
+ total_read += read_ahead;
+ }
+
+ if (total_need < READAHEAD_BUFFER_SIZE) {
+ if (!ReadFile
+ (context->hidden.windowsio.h, context->hidden.windowsio.buffer.data,
+ READAHEAD_BUFFER_SIZE, &byte_read, NULL)) {
+ SDL_Error(SDL_EFREAD);
+ return 0;
+ }
+ read_ahead = SDL_min(total_need, (int) byte_read);
+ SDL_memcpy(ptr, context->hidden.windowsio.buffer.data, read_ahead);
+ context->hidden.windowsio.buffer.size = byte_read;
+ context->hidden.windowsio.buffer.left = byte_read - read_ahead;
+ total_read += read_ahead;
+ } else {
+ if (!ReadFile
+ (context->hidden.windowsio.h, ptr, (DWORD)total_need, &byte_read, NULL)) {
+ SDL_Error(SDL_EFREAD);
+ return 0;
+ }
+ total_read += byte_read;
+ }
+ return (total_read / size);
+}
+
+static size_t SDLCALL
+windows_file_write(SDL_RWops * context, const void *ptr, size_t size,
+ size_t num)
+{
+
+ size_t total_bytes;
+ DWORD byte_written;
+ size_t nwritten;
+
+ total_bytes = size * num;
+
+ if (!context || context->hidden.windowsio.h == INVALID_HANDLE_VALUE
+ || total_bytes <= 0 || !size)
+ return 0;
+
+ if (context->hidden.windowsio.buffer.left) {
+ SetFilePointer(context->hidden.windowsio.h,
+ -(LONG)context->hidden.windowsio.buffer.left, NULL,
+ FILE_CURRENT);
+ context->hidden.windowsio.buffer.left = 0;
+ }
+
+ /* if in append mode, we must go to the EOF before write */
+ if (context->hidden.windowsio.append) {
+ if (SetFilePointer(context->hidden.windowsio.h, 0L, NULL, FILE_END) ==
+ INVALID_SET_FILE_POINTER) {
+ SDL_Error(SDL_EFWRITE);
+ return 0;
+ }
+ }
+
+ if (!WriteFile
+ (context->hidden.windowsio.h, ptr, (DWORD)total_bytes, &byte_written, NULL)) {
+ SDL_Error(SDL_EFWRITE);
+ return 0;
+ }
+
+ nwritten = byte_written / size;
+ return nwritten;
+}
+
+static int SDLCALL
+windows_file_close(SDL_RWops * context)
+{
+
+ if (context) {
+ if (context->hidden.windowsio.h != INVALID_HANDLE_VALUE) {
+ CloseHandle(context->hidden.windowsio.h);
+ context->hidden.windowsio.h = INVALID_HANDLE_VALUE; /* to be sure */
+ }
+ if (context->hidden.windowsio.buffer.data) {
+ SDL_free(context->hidden.windowsio.buffer.data);
+ context->hidden.windowsio.buffer.data = NULL;
+ }
+ SDL_FreeRW(context);
+ }
+ return (0);
+}
+#endif /* __WIN32__ */
+
+#ifdef HAVE_STDIO_H
+
+/* Functions to read/write stdio file pointers */
+
+static long SDLCALL
+stdio_seek(SDL_RWops * context, long offset, int whence)
+{
+ if (fseek(context->hidden.stdio.fp, offset, whence) == 0) {
+ return (ftell(context->hidden.stdio.fp));
+ } else {
+ SDL_Error(SDL_EFSEEK);
+ return (-1);
+ }
+}
+
+static size_t SDLCALL
+stdio_read(SDL_RWops * context, void *ptr, size_t size, size_t maxnum)
+{
+ size_t nread;
+
+ nread = fread(ptr, size, maxnum, context->hidden.stdio.fp);
+ if (nread == 0 && ferror(context->hidden.stdio.fp)) {
+ SDL_Error(SDL_EFREAD);
+ }
+ return (nread);
+}
+
+static size_t SDLCALL
+stdio_write(SDL_RWops * context, const void *ptr, size_t size, size_t num)
+{
+ size_t nwrote;
+
+ nwrote = fwrite(ptr, size, num, context->hidden.stdio.fp);
+ if (nwrote == 0 && ferror(context->hidden.stdio.fp)) {
+ SDL_Error(SDL_EFWRITE);
+ }
+ return (nwrote);
+}
+
+static int SDLCALL
+stdio_close(SDL_RWops * context)
+{
+ int status = 0;
+ if (context) {
+ if (context->hidden.stdio.autoclose) {
+ /* WARNING: Check the return value here! */
+ if (fclose(context->hidden.stdio.fp) != 0) {
+ SDL_Error(SDL_EFWRITE);
+ status = -1;
+ }
+ }
+ SDL_FreeRW(context);
+ }
+ return status;
+}
+#endif /* !HAVE_STDIO_H */
+
+/* Functions to read/write memory pointers */
+
+static long SDLCALL
+mem_seek(SDL_RWops * context, long offset, int whence)
+{
+ Uint8 *newpos;
+
+ switch (whence) {
+ case RW_SEEK_SET:
+ newpos = context->hidden.mem.base + offset;
+ break;
+ case RW_SEEK_CUR:
+ newpos = context->hidden.mem.here + offset;
+ break;
+ case RW_SEEK_END:
+ newpos = context->hidden.mem.stop + offset;
+ break;
+ default:
+ SDL_SetError("Unknown value for 'whence'");
+ return (-1);
+ }
+ if (newpos < context->hidden.mem.base) {
+ newpos = context->hidden.mem.base;
+ }
+ if (newpos > context->hidden.mem.stop) {
+ newpos = context->hidden.mem.stop;
+ }
+ context->hidden.mem.here = newpos;
+ return (long)(context->hidden.mem.here - context->hidden.mem.base);
+}
+
+static size_t SDLCALL
+mem_read(SDL_RWops * context, void *ptr, size_t size, size_t maxnum)
+{
+ size_t total_bytes;
+ size_t mem_available;
+
+ total_bytes = (maxnum * size);
+ if ((maxnum <= 0) || (size <= 0)
+ || ((total_bytes / maxnum) != (size_t) size)) {
+ return 0;
+ }
+
+ mem_available = (context->hidden.mem.stop - context->hidden.mem.here);
+ if (total_bytes > mem_available) {
+ total_bytes = mem_available;
+ }
+
+ SDL_memcpy(ptr, context->hidden.mem.here, total_bytes);
+ context->hidden.mem.here += total_bytes;
+
+ return (total_bytes / size);
+}
+
+static size_t SDLCALL
+mem_write(SDL_RWops * context, const void *ptr, size_t size, size_t num)
+{
+ if ((context->hidden.mem.here + (num * size)) > context->hidden.mem.stop) {
+ num = (context->hidden.mem.stop - context->hidden.mem.here) / size;
+ }
+ SDL_memcpy(context->hidden.mem.here, ptr, num * size);
+ context->hidden.mem.here += num * size;
+ return (num);
+}
+
+static size_t SDLCALL
+mem_writeconst(SDL_RWops * context, const void *ptr, size_t size, size_t num)
+{
+ SDL_SetError("Can't write to read-only memory");
+ return (-1);
+}
+
+static int SDLCALL
+mem_close(SDL_RWops * context)
+{
+ if (context) {
+ SDL_FreeRW(context);
+ }
+ return (0);
+}
+
+
+/* Functions to create SDL_RWops structures from various data sources */
+
+SDL_RWops *
+SDL_RWFromFile(const char *file, const char *mode)
+{
+ SDL_RWops *rwops = NULL;
+#ifdef HAVE_STDIO_H
+ FILE *fp = NULL;
+#endif
+ if (!file || !*file || !mode || !*mode) {
+ SDL_SetError("SDL_RWFromFile(): No file or no mode specified");
+ return NULL;
+ }
+#if defined(ANDROIDXELI) //Xeli: dont use the android assets, TODO create fallback system
+ rwops = SDL_AllocRW();
+ if (!rwops)
+ return NULL; /* SDL_SetError already setup by SDL_AllocRW() */
+ if (Android_JNI_FileOpen(rwops, file, mode) < 0) {
+ SDL_FreeRW(rwops);
+ return NULL;
+ }
+ rwops->seek = Android_JNI_FileSeek;
+ rwops->read = Android_JNI_FileRead;
+ rwops->write = Android_JNI_FileWrite;
+ rwops->close = Android_JNI_FileClose;
+
+#elif defined(__WIN32__)
+ rwops = SDL_AllocRW();
+ if (!rwops)
+ return NULL; /* SDL_SetError already setup by SDL_AllocRW() */
+ if (windows_file_open(rwops, file, mode) < 0) {
+ SDL_FreeRW(rwops);
+ return NULL;
+ }
+ rwops->seek = windows_file_seek;
+ rwops->read = windows_file_read;
+ rwops->write = windows_file_write;
+ rwops->close = windows_file_close;
+
+#elif HAVE_STDIO_H
+ #ifdef __APPLE__
+ fp = SDL_OpenFPFromBundleOrFallback(file, mode);
+ #else
+ fp = fopen(file, mode);
+ #endif
+ if (fp == NULL) {
+ SDL_SetError("Couldn't open %s", file);
+ } else {
+ rwops = SDL_RWFromFP(fp, 1);
+ }
+#else
+ SDL_SetError("SDL not compiled with stdio support");
+#endif /* !HAVE_STDIO_H */
+
+ return (rwops);
+}
+
+#ifdef HAVE_STDIO_H
+SDL_RWops *
+SDL_RWFromFP(FILE * fp, SDL_bool autoclose)
+{
+ SDL_RWops *rwops = NULL;
+
+#if 0
+/*#ifdef __NDS__*/
+ /* set it up so we can use stdio file function */
+ fatInitDefault();
+ printf("called fatInitDefault()");
+#endif /* __NDS__ */
+
+ rwops = SDL_AllocRW();
+ if (rwops != NULL) {
+ rwops->seek = stdio_seek;
+ rwops->read = stdio_read;
+ rwops->write = stdio_write;
+ rwops->close = stdio_close;
+ rwops->hidden.stdio.fp = fp;
+ rwops->hidden.stdio.autoclose = autoclose;
+ }
+ return (rwops);
+}
+#else
+SDL_RWops *
+SDL_RWFromFP(void * fp, SDL_bool autoclose)
+{
+ SDL_SetError("SDL not compiled with stdio support");
+ return NULL;
+}
+#endif /* HAVE_STDIO_H */
+
+SDL_RWops *
+SDL_RWFromMem(void *mem, int size)
+{
+ SDL_RWops *rwops;
+
+ rwops = SDL_AllocRW();
+ if (rwops != NULL) {
+ rwops->seek = mem_seek;
+ rwops->read = mem_read;
+ rwops->write = mem_write;
+ rwops->close = mem_close;
+ rwops->hidden.mem.base = (Uint8 *) mem;
+ rwops->hidden.mem.here = rwops->hidden.mem.base;
+ rwops->hidden.mem.stop = rwops->hidden.mem.base + size;
+ }
+ return (rwops);
+}
+
+SDL_RWops *
+SDL_RWFromConstMem(const void *mem, int size)
+{
+ SDL_RWops *rwops;
+
+ rwops = SDL_AllocRW();
+ if (rwops != NULL) {
+ rwops->seek = mem_seek;
+ rwops->read = mem_read;
+ rwops->write = mem_writeconst;
+ rwops->close = mem_close;
+ rwops->hidden.mem.base = (Uint8 *) mem;
+ rwops->hidden.mem.here = rwops->hidden.mem.base;
+ rwops->hidden.mem.stop = rwops->hidden.mem.base + size;
+ }
+ return (rwops);
+}
+
+SDL_RWops *
+SDL_AllocRW(void)
+{
+ SDL_RWops *area;
+
+ area = (SDL_RWops *) SDL_malloc(sizeof *area);
+ if (area == NULL) {
+ SDL_OutOfMemory();
+ }
+ return (area);
+}
+
+void
+SDL_FreeRW(SDL_RWops * area)
+{
+ SDL_free(area);
+}
+
+/* Functions for dynamically reading and writing endian-specific values */
+
+Uint16
+SDL_ReadLE16(SDL_RWops * src)
+{
+ Uint16 value;
+
+ SDL_RWread(src, &value, (sizeof value), 1);
+ return (SDL_SwapLE16(value));
+}
+
+Uint16
+SDL_ReadBE16(SDL_RWops * src)
+{
+ Uint16 value;
+
+ SDL_RWread(src, &value, (sizeof value), 1);
+ return (SDL_SwapBE16(value));
+}
+
+Uint32
+SDL_ReadLE32(SDL_RWops * src)
+{
+ Uint32 value;
+
+ SDL_RWread(src, &value, (sizeof value), 1);
+ return (SDL_SwapLE32(value));
+}
+
+Uint32
+SDL_ReadBE32(SDL_RWops * src)
+{
+ Uint32 value;
+
+ SDL_RWread(src, &value, (sizeof value), 1);
+ return (SDL_SwapBE32(value));
+}
+
+Uint64
+SDL_ReadLE64(SDL_RWops * src)
+{
+ Uint64 value;
+
+ SDL_RWread(src, &value, (sizeof value), 1);
+ return (SDL_SwapLE64(value));
+}
+
+Uint64
+SDL_ReadBE64(SDL_RWops * src)
+{
+ Uint64 value;
+
+ SDL_RWread(src, &value, (sizeof value), 1);
+ return (SDL_SwapBE64(value));
+}
+
+size_t
+SDL_WriteLE16(SDL_RWops * dst, Uint16 value)
+{
+ value = SDL_SwapLE16(value);
+ return (SDL_RWwrite(dst, &value, (sizeof value), 1));
+}
+
+size_t
+SDL_WriteBE16(SDL_RWops * dst, Uint16 value)
+{
+ value = SDL_SwapBE16(value);
+ return (SDL_RWwrite(dst, &value, (sizeof value), 1));
+}
+
+size_t
+SDL_WriteLE32(SDL_RWops * dst, Uint32 value)
+{
+ value = SDL_SwapLE32(value);
+ return (SDL_RWwrite(dst, &value, (sizeof value), 1));
+}
+
+size_t
+SDL_WriteBE32(SDL_RWops * dst, Uint32 value)
+{
+ value = SDL_SwapBE32(value);
+ return (SDL_RWwrite(dst, &value, (sizeof value), 1));
+}
+
+size_t
+SDL_WriteLE64(SDL_RWops * dst, Uint64 value)
+{
+ value = SDL_SwapLE64(value);
+ return (SDL_RWwrite(dst, &value, (sizeof value), 1));
+}
+
+size_t
+SDL_WriteBE64(SDL_RWops * dst, Uint64 value)
+{
+ value = SDL_SwapBE64(value);
+ return (SDL_RWwrite(dst, &value, (sizeof value), 1));
+}
+
+/* vi: set ts=4 sw=4 expandtab: */