mirror of
https://github.com/Relintai/sdl2_frt.git
synced 2024-11-21 20:47:19 +01:00
Fixed bug 4297 - Android StrictMode policy. Remove APK expansion support
"In the second half of 2021, new apps will be required to publish with the Android App Bundle on Google Play" (see https://developer.android.com/guide/app-bundle) And "Android App Bundles don't support APK expansion (*.obb) files".
This commit is contained in:
parent
92cb9192e3
commit
965b466ee8
@ -1221,76 +1221,6 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
|
||||
}
|
||||
}
|
||||
|
||||
// APK expansion files support
|
||||
|
||||
/** com.android.vending.expansion.zipfile.ZipResourceFile object or null. */
|
||||
private static Object expansionFile;
|
||||
|
||||
/** com.android.vending.expansion.zipfile.ZipResourceFile's getInputStream() or null. */
|
||||
private static Method expansionFileMethod;
|
||||
|
||||
/**
|
||||
* This method is called by SDL using JNI.
|
||||
* @return an InputStream on success or null if no expansion file was used.
|
||||
* @throws IOException on errors. Message is set for the SDL error message.
|
||||
*/
|
||||
public static InputStream openAPKExpansionInputStream(String fileName) throws IOException {
|
||||
// Get a ZipResourceFile representing a merger of both the main and patch files
|
||||
if (expansionFile == null) {
|
||||
String mainHint = nativeGetHint("SDL_ANDROID_APK_EXPANSION_MAIN_FILE_VERSION");
|
||||
if (mainHint == null) {
|
||||
return null; // no expansion use if no main version was set
|
||||
}
|
||||
String patchHint = nativeGetHint("SDL_ANDROID_APK_EXPANSION_PATCH_FILE_VERSION");
|
||||
if (patchHint == null) {
|
||||
return null; // no expansion use if no patch version was set
|
||||
}
|
||||
|
||||
Integer mainVersion;
|
||||
Integer patchVersion;
|
||||
try {
|
||||
mainVersion = Integer.valueOf(mainHint);
|
||||
patchVersion = Integer.valueOf(patchHint);
|
||||
} catch (NumberFormatException ex) {
|
||||
ex.printStackTrace();
|
||||
throw new IOException("No valid file versions set for APK expansion files", ex);
|
||||
}
|
||||
|
||||
try {
|
||||
// To avoid direct dependency on Google APK expansion library that is
|
||||
// not a part of Android SDK we access it using reflection
|
||||
expansionFile = Class.forName("com.android.vending.expansion.zipfile.APKExpansionSupport")
|
||||
.getMethod("getAPKExpansionZipFile", Context.class, int.class, int.class)
|
||||
.invoke(null, SDL.getContext(), mainVersion, patchVersion);
|
||||
|
||||
expansionFileMethod = expansionFile.getClass()
|
||||
.getMethod("getInputStream", String.class);
|
||||
} catch (Exception ex) {
|
||||
ex.printStackTrace();
|
||||
expansionFile = null;
|
||||
expansionFileMethod = null;
|
||||
throw new IOException("Could not access APK expansion support library", ex);
|
||||
}
|
||||
}
|
||||
|
||||
// Get an input stream for a known file inside the expansion file ZIPs
|
||||
InputStream fileStream;
|
||||
try {
|
||||
fileStream = (InputStream)expansionFileMethod.invoke(expansionFile, fileName);
|
||||
} catch (Exception ex) {
|
||||
// calling "getInputStream" failed
|
||||
ex.printStackTrace();
|
||||
throw new IOException("Could not open stream from APK expansion file", ex);
|
||||
}
|
||||
|
||||
if (fileStream == null) {
|
||||
// calling "getInputStream" was successful but null was returned
|
||||
throw new IOException("Could not find path in APK expansion file");
|
||||
}
|
||||
|
||||
return fileStream;
|
||||
}
|
||||
|
||||
// Messagebox
|
||||
|
||||
/** Result of current messagebox. Also used for blocking the calling thread. */
|
||||
|
@ -96,15 +96,7 @@ typedef struct SDL_RWops
|
||||
#if defined(__ANDROID__)
|
||||
struct
|
||||
{
|
||||
void *fileNameRef;
|
||||
void *inputStreamRef;
|
||||
void *readableByteChannelRef;
|
||||
void *readMethod;
|
||||
void *assetFileDescriptorRef;
|
||||
long position;
|
||||
long size;
|
||||
long offset;
|
||||
int fd;
|
||||
void *asset;
|
||||
} androidio;
|
||||
#elif defined(__WIN32__)
|
||||
struct
|
||||
|
@ -311,7 +311,6 @@ static jmethodID midIsScreenKeyboardShown;
|
||||
static jmethodID midIsTablet;
|
||||
static jmethodID midManualBackButton;
|
||||
static jmethodID midMinimizeWindow;
|
||||
static jmethodID midOpenAPKExpansionInputStream;
|
||||
static jmethodID midRequestPermission;
|
||||
static jmethodID midSendMessage;
|
||||
static jmethodID midSetActivityTitle;
|
||||
@ -590,7 +589,6 @@ JNIEXPORT void JNICALL SDL_JAVA_INTERFACE(nativeSetupJNI)(JNIEnv *env, jclass cl
|
||||
midIsTablet = (*env)->GetStaticMethodID(env, mActivityClass, "isTablet", "()Z");
|
||||
midManualBackButton = (*env)->GetStaticMethodID(env, mActivityClass, "manualBackButton", "()V");
|
||||
midMinimizeWindow = (*env)->GetStaticMethodID(env, mActivityClass, "minimizeWindow","()V");
|
||||
midOpenAPKExpansionInputStream = (*env)->GetStaticMethodID(env, mActivityClass, "openAPKExpansionInputStream", "(Ljava/lang/String;)Ljava/io/InputStream;");
|
||||
midRequestPermission = (*env)->GetStaticMethodID(env, mActivityClass, "requestPermission", "(Ljava/lang/String;I)V");
|
||||
midSendMessage = (*env)->GetStaticMethodID(env, mActivityClass, "sendMessage", "(II)Z");
|
||||
midSetActivityTitle = (*env)->GetStaticMethodID(env, mActivityClass, "setActivityTitle","(Ljava/lang/String;)Z");
|
||||
@ -620,7 +618,6 @@ JNIEXPORT void JNICALL SDL_JAVA_INTERFACE(nativeSetupJNI)(JNIEnv *env, jclass cl
|
||||
!midIsTablet ||
|
||||
!midManualBackButton ||
|
||||
!midMinimizeWindow ||
|
||||
!midOpenAPKExpansionInputStream ||
|
||||
!midRequestPermission ||
|
||||
!midSendMessage ||
|
||||
!midSetActivityTitle ||
|
||||
@ -1867,245 +1864,43 @@ static void Internal_Android_Destroy_AssetManager() {
|
||||
}
|
||||
}
|
||||
|
||||
static int Internal_Android_JNI_FileOpen(SDL_RWops *ctx)
|
||||
{
|
||||
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
|
||||
|
||||
int result = 0;
|
||||
|
||||
jmethodID mid;
|
||||
jobject context;
|
||||
jobject assetManager;
|
||||
jobject inputStream;
|
||||
jclass channels;
|
||||
jobject readableByteChannel;
|
||||
jstring fileNameJString;
|
||||
jobject fd;
|
||||
jclass fdCls;
|
||||
jfieldID descriptor;
|
||||
|
||||
JNIEnv *env = Android_JNI_GetEnv();
|
||||
if (!LocalReferenceHolder_Init(&refs, env)) {
|
||||
goto failure;
|
||||
}
|
||||
|
||||
fileNameJString = (jstring)ctx->hidden.androidio.fileNameRef;
|
||||
ctx->hidden.androidio.position = 0;
|
||||
|
||||
/* context = SDLActivity.getContext(); */
|
||||
context = (*env)->CallStaticObjectMethod(env, mActivityClass, midGetContext);
|
||||
|
||||
/* assetManager = context.getAssets(); */
|
||||
mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, context),
|
||||
"getAssets", "()Landroid/content/res/AssetManager;");
|
||||
assetManager = (*env)->CallObjectMethod(env, context, mid);
|
||||
|
||||
/* First let's try opening the file to obtain an AssetFileDescriptor.
|
||||
* This method reads the files directly from the APKs using standard *nix calls
|
||||
*/
|
||||
mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, assetManager), "openFd", "(Ljava/lang/String;)Landroid/content/res/AssetFileDescriptor;");
|
||||
inputStream = (*env)->CallObjectMethod(env, assetManager, mid, fileNameJString);
|
||||
if (Android_JNI_ExceptionOccurred(SDL_TRUE)) {
|
||||
goto fallback;
|
||||
}
|
||||
|
||||
mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, inputStream), "getStartOffset", "()J");
|
||||
ctx->hidden.androidio.offset = (long)(*env)->CallLongMethod(env, inputStream, mid);
|
||||
if (Android_JNI_ExceptionOccurred(SDL_TRUE)) {
|
||||
goto fallback;
|
||||
}
|
||||
|
||||
mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, inputStream), "getDeclaredLength", "()J");
|
||||
ctx->hidden.androidio.size = (long)(*env)->CallLongMethod(env, inputStream, mid);
|
||||
if (Android_JNI_ExceptionOccurred(SDL_TRUE)) {
|
||||
goto fallback;
|
||||
}
|
||||
|
||||
mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, inputStream), "getFileDescriptor", "()Ljava/io/FileDescriptor;");
|
||||
fd = (*env)->CallObjectMethod(env, inputStream, mid);
|
||||
fdCls = (*env)->GetObjectClass(env, fd);
|
||||
descriptor = (*env)->GetFieldID(env, fdCls, "descriptor", "I");
|
||||
ctx->hidden.androidio.fd = (*env)->GetIntField(env, fd, descriptor);
|
||||
ctx->hidden.androidio.assetFileDescriptorRef = (*env)->NewGlobalRef(env, inputStream);
|
||||
|
||||
/* Seek to the correct offset in the file. */
|
||||
lseek(ctx->hidden.androidio.fd, (off_t)ctx->hidden.androidio.offset, SEEK_SET);
|
||||
|
||||
if (0) {
|
||||
fallback:
|
||||
/* Disabled log message because of spam on the Nexus 7 */
|
||||
/* __android_log_print(ANDROID_LOG_DEBUG, "SDL", "Falling back to legacy InputStream method for opening file"); */
|
||||
|
||||
/* Try the old method using InputStream */
|
||||
ctx->hidden.androidio.assetFileDescriptorRef = NULL;
|
||||
|
||||
/* inputStream = assetManager.open(<filename>); */
|
||||
mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, assetManager),
|
||||
"open", "(Ljava/lang/String;I)Ljava/io/InputStream;");
|
||||
inputStream = (*env)->CallObjectMethod(env, assetManager, mid, fileNameJString, 1 /* ACCESS_RANDOM */);
|
||||
if (Android_JNI_ExceptionOccurred(SDL_FALSE)) {
|
||||
/* Try fallback to APK expansion files */
|
||||
inputStream = (*env)->CallStaticObjectMethod(env, mActivityClass, midOpenAPKExpansionInputStream, fileNameJString);
|
||||
|
||||
/* Exception is checked first because it always needs to be cleared.
|
||||
* If no exception occurred then the last SDL error message is kept.
|
||||
*/
|
||||
if (Android_JNI_ExceptionOccurred(SDL_FALSE) || !inputStream) {
|
||||
goto failure;
|
||||
}
|
||||
}
|
||||
|
||||
ctx->hidden.androidio.inputStreamRef = (*env)->NewGlobalRef(env, inputStream);
|
||||
|
||||
/* Despite all the visible documentation on [Asset]InputStream claiming
|
||||
* that the .available() method is not guaranteed to return the entire file
|
||||
* size, comments in <sdk>/samples/<ver>/ApiDemos/src/com/example/ ...
|
||||
* android/apis/content/ReadAsset.java imply that Android's
|
||||
* AssetInputStream.available() /will/ always return the total file size
|
||||
*/
|
||||
|
||||
/* size = inputStream.available(); */
|
||||
mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, inputStream),
|
||||
"available", "()I");
|
||||
ctx->hidden.androidio.size = (long)(*env)->CallIntMethod(env, inputStream, mid);
|
||||
if (Android_JNI_ExceptionOccurred(SDL_FALSE)) {
|
||||
goto failure;
|
||||
}
|
||||
|
||||
/* readableByteChannel = Channels.newChannel(inputStream); */
|
||||
channels = (*env)->FindClass(env, "java/nio/channels/Channels");
|
||||
mid = (*env)->GetStaticMethodID(env, channels,
|
||||
"newChannel",
|
||||
"(Ljava/io/InputStream;)Ljava/nio/channels/ReadableByteChannel;");
|
||||
readableByteChannel = (*env)->CallStaticObjectMethod(
|
||||
env, channels, mid, inputStream);
|
||||
if (Android_JNI_ExceptionOccurred(SDL_FALSE)) {
|
||||
goto failure;
|
||||
}
|
||||
|
||||
ctx->hidden.androidio.readableByteChannelRef =
|
||||
(*env)->NewGlobalRef(env, readableByteChannel);
|
||||
|
||||
/* Store .read id for reading purposes */
|
||||
mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, readableByteChannel),
|
||||
"read", "(Ljava/nio/ByteBuffer;)I");
|
||||
ctx->hidden.androidio.readMethod = mid;
|
||||
}
|
||||
|
||||
if (0) {
|
||||
failure:
|
||||
result = -1;
|
||||
|
||||
(*env)->DeleteGlobalRef(env, (jobject)ctx->hidden.androidio.fileNameRef);
|
||||
|
||||
if(ctx->hidden.androidio.inputStreamRef != NULL) {
|
||||
(*env)->DeleteGlobalRef(env, (jobject)ctx->hidden.androidio.inputStreamRef);
|
||||
}
|
||||
|
||||
if(ctx->hidden.androidio.readableByteChannelRef != NULL) {
|
||||
(*env)->DeleteGlobalRef(env, (jobject)ctx->hidden.androidio.readableByteChannelRef);
|
||||
}
|
||||
|
||||
if(ctx->hidden.androidio.assetFileDescriptorRef != NULL) {
|
||||
(*env)->DeleteGlobalRef(env, (jobject)ctx->hidden.androidio.assetFileDescriptorRef);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
LocalReferenceHolder_Cleanup(&refs);
|
||||
return result;
|
||||
}
|
||||
|
||||
int Android_JNI_FileOpen(SDL_RWops *ctx,
|
||||
const char *fileName, const char *mode)
|
||||
{
|
||||
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
|
||||
JNIEnv *env = Android_JNI_GetEnv();
|
||||
int retval;
|
||||
jstring fileNameJString;
|
||||
AAsset *asset = NULL;
|
||||
ctx->hidden.androidio.asset = NULL;
|
||||
|
||||
if (!LocalReferenceHolder_Init(&refs, env)) {
|
||||
LocalReferenceHolder_Cleanup(&refs);
|
||||
if (asset_manager == NULL) {
|
||||
Internal_Android_Create_AssetManager();
|
||||
}
|
||||
|
||||
if (asset_manager == NULL) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (!ctx) {
|
||||
LocalReferenceHolder_Cleanup(&refs);
|
||||
asset = AAssetManager_open(asset_manager, fileName, AASSET_MODE_UNKNOWN);
|
||||
if (asset == NULL) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
fileNameJString = (*env)->NewStringUTF(env, fileName);
|
||||
ctx->hidden.androidio.fileNameRef = (*env)->NewGlobalRef(env, fileNameJString);
|
||||
ctx->hidden.androidio.inputStreamRef = NULL;
|
||||
ctx->hidden.androidio.readableByteChannelRef = NULL;
|
||||
ctx->hidden.androidio.readMethod = NULL;
|
||||
ctx->hidden.androidio.assetFileDescriptorRef = NULL;
|
||||
|
||||
retval = Internal_Android_JNI_FileOpen(ctx);
|
||||
LocalReferenceHolder_Cleanup(&refs);
|
||||
return retval;
|
||||
ctx->hidden.androidio.asset = (void*) asset;
|
||||
return 0;
|
||||
}
|
||||
|
||||
size_t Android_JNI_FileRead(SDL_RWops *ctx, void *buffer,
|
||||
size_t Android_JNI_FileRead(SDL_RWops* ctx, void* buffer,
|
||||
size_t size, size_t maxnum)
|
||||
{
|
||||
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
|
||||
size_t result;
|
||||
AAsset *asset = (AAsset*) ctx->hidden.androidio.asset;
|
||||
result = AAsset_read(asset, buffer, size * maxnum);
|
||||
|
||||
if (ctx->hidden.androidio.assetFileDescriptorRef) {
|
||||
size_t bytesMax = size * maxnum;
|
||||
size_t result;
|
||||
if (ctx->hidden.androidio.size != -1 /* UNKNOWN_LENGTH */ && ctx->hidden.androidio.position + bytesMax > ctx->hidden.androidio.size) {
|
||||
bytesMax = ctx->hidden.androidio.size - ctx->hidden.androidio.position;
|
||||
}
|
||||
result = read(ctx->hidden.androidio.fd, buffer, bytesMax );
|
||||
if (result > 0) {
|
||||
ctx->hidden.androidio.position += result;
|
||||
LocalReferenceHolder_Cleanup(&refs);
|
||||
return result / size;
|
||||
}
|
||||
LocalReferenceHolder_Cleanup(&refs);
|
||||
return 0;
|
||||
if (result > 0) {
|
||||
/* Number of chuncks */
|
||||
return (result / size);
|
||||
} else {
|
||||
jlong bytesRemaining = (jlong) (size * maxnum);
|
||||
jlong bytesMax = (jlong) (ctx->hidden.androidio.size - ctx->hidden.androidio.position);
|
||||
int bytesRead = 0;
|
||||
JNIEnv *env;
|
||||
jobject readableByteChannel;
|
||||
jmethodID readMethod;
|
||||
jobject byteBuffer;
|
||||
|
||||
/* Don't read more bytes than those that remain in the file, otherwise we get an exception */
|
||||
if (bytesRemaining > bytesMax) bytesRemaining = bytesMax;
|
||||
|
||||
env = Android_JNI_GetEnv();
|
||||
if (!LocalReferenceHolder_Init(&refs, env)) {
|
||||
LocalReferenceHolder_Cleanup(&refs);
|
||||
return 0;
|
||||
}
|
||||
|
||||
readableByteChannel = (jobject)ctx->hidden.androidio.readableByteChannelRef;
|
||||
readMethod = (jmethodID)ctx->hidden.androidio.readMethod;
|
||||
byteBuffer = (*env)->NewDirectByteBuffer(env, buffer, bytesRemaining);
|
||||
|
||||
while (bytesRemaining > 0) {
|
||||
/* result = readableByteChannel.read(...); */
|
||||
int result = (*env)->CallIntMethod(env, readableByteChannel, readMethod, byteBuffer);
|
||||
|
||||
if (Android_JNI_ExceptionOccurred(SDL_FALSE)) {
|
||||
LocalReferenceHolder_Cleanup(&refs);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (result < 0) {
|
||||
break;
|
||||
}
|
||||
|
||||
bytesRemaining -= result;
|
||||
bytesRead += result;
|
||||
ctx->hidden.androidio.position += result;
|
||||
}
|
||||
LocalReferenceHolder_Cleanup(&refs);
|
||||
return bytesRead / size;
|
||||
/* Error or EOF */
|
||||
return result;
|
||||
}
|
||||
}
|
||||
|
||||
@ -2116,148 +1911,27 @@ size_t Android_JNI_FileWrite(SDL_RWops *ctx, const void *buffer,
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int Internal_Android_JNI_FileClose(SDL_RWops *ctx, SDL_bool release)
|
||||
Sint64 Android_JNI_FileSize(SDL_RWops *ctx)
|
||||
{
|
||||
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
|
||||
|
||||
int result = 0;
|
||||
JNIEnv *env = Android_JNI_GetEnv();
|
||||
|
||||
if (!LocalReferenceHolder_Init(&refs, env)) {
|
||||
LocalReferenceHolder_Cleanup(&refs);
|
||||
return SDL_SetError("Failed to allocate enough JVM local references");
|
||||
}
|
||||
|
||||
if (ctx) {
|
||||
if (release) {
|
||||
(*env)->DeleteGlobalRef(env, (jobject)ctx->hidden.androidio.fileNameRef);
|
||||
}
|
||||
|
||||
if (ctx->hidden.androidio.assetFileDescriptorRef) {
|
||||
jobject inputStream = (jobject)ctx->hidden.androidio.assetFileDescriptorRef;
|
||||
jmethodID mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, inputStream),
|
||||
"close", "()V");
|
||||
(*env)->CallVoidMethod(env, inputStream, mid);
|
||||
(*env)->DeleteGlobalRef(env, (jobject)ctx->hidden.androidio.assetFileDescriptorRef);
|
||||
if (Android_JNI_ExceptionOccurred(SDL_FALSE)) {
|
||||
result = -1;
|
||||
}
|
||||
}
|
||||
else {
|
||||
jobject inputStream = (jobject)ctx->hidden.androidio.inputStreamRef;
|
||||
|
||||
/* inputStream.close(); */
|
||||
jmethodID mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, inputStream),
|
||||
"close", "()V");
|
||||
(*env)->CallVoidMethod(env, inputStream, mid);
|
||||
(*env)->DeleteGlobalRef(env, (jobject)ctx->hidden.androidio.inputStreamRef);
|
||||
(*env)->DeleteGlobalRef(env, (jobject)ctx->hidden.androidio.readableByteChannelRef);
|
||||
if (Android_JNI_ExceptionOccurred(SDL_FALSE)) {
|
||||
result = -1;
|
||||
}
|
||||
}
|
||||
|
||||
if (release) {
|
||||
SDL_FreeRW(ctx);
|
||||
}
|
||||
}
|
||||
|
||||
LocalReferenceHolder_Cleanup(&refs);
|
||||
off64_t result;
|
||||
AAsset *asset = (AAsset*) ctx->hidden.androidio.asset;
|
||||
result = AAsset_getLength64(asset);
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
Sint64 Android_JNI_FileSize(SDL_RWops *ctx)
|
||||
Sint64 Android_JNI_FileSeek(SDL_RWops* ctx, Sint64 offset, int whence)
|
||||
{
|
||||
return ctx->hidden.androidio.size;
|
||||
}
|
||||
|
||||
Sint64 Android_JNI_FileSeek(SDL_RWops *ctx, Sint64 offset, int whence)
|
||||
{
|
||||
if (ctx->hidden.androidio.assetFileDescriptorRef) {
|
||||
off_t ret;
|
||||
switch (whence) {
|
||||
case RW_SEEK_SET:
|
||||
if (ctx->hidden.androidio.size != -1 /* UNKNOWN_LENGTH */ && offset > ctx->hidden.androidio.size) offset = ctx->hidden.androidio.size;
|
||||
offset += ctx->hidden.androidio.offset;
|
||||
break;
|
||||
case RW_SEEK_CUR:
|
||||
offset += ctx->hidden.androidio.position;
|
||||
if (ctx->hidden.androidio.size != -1 /* UNKNOWN_LENGTH */ && offset > ctx->hidden.androidio.size) offset = ctx->hidden.androidio.size;
|
||||
offset += ctx->hidden.androidio.offset;
|
||||
break;
|
||||
case RW_SEEK_END:
|
||||
offset = ctx->hidden.androidio.offset + ctx->hidden.androidio.size + offset;
|
||||
break;
|
||||
default:
|
||||
return SDL_SetError("Unknown value for 'whence'");
|
||||
}
|
||||
|
||||
ret = lseek(ctx->hidden.androidio.fd, (off_t)offset, SEEK_SET);
|
||||
if (ret == -1) return -1;
|
||||
ctx->hidden.androidio.position = ret - ctx->hidden.androidio.offset;
|
||||
} else {
|
||||
Sint64 newPosition;
|
||||
Sint64 movement;
|
||||
|
||||
switch (whence) {
|
||||
case RW_SEEK_SET:
|
||||
newPosition = offset;
|
||||
break;
|
||||
case RW_SEEK_CUR:
|
||||
newPosition = ctx->hidden.androidio.position + offset;
|
||||
break;
|
||||
case RW_SEEK_END:
|
||||
newPosition = ctx->hidden.androidio.size + offset;
|
||||
break;
|
||||
default:
|
||||
return SDL_SetError("Unknown value for 'whence'");
|
||||
}
|
||||
|
||||
/* Validate the new position */
|
||||
if (newPosition < 0) {
|
||||
return SDL_Error(SDL_EFSEEK);
|
||||
}
|
||||
if (newPosition > ctx->hidden.androidio.size) {
|
||||
newPosition = ctx->hidden.androidio.size;
|
||||
}
|
||||
|
||||
movement = newPosition - ctx->hidden.androidio.position;
|
||||
if (movement > 0) {
|
||||
unsigned char buffer[4096];
|
||||
|
||||
/* The easy case where we're seeking forwards */
|
||||
while (movement > 0) {
|
||||
Sint64 amount = sizeof (buffer);
|
||||
size_t result;
|
||||
if (amount > movement) {
|
||||
amount = movement;
|
||||
}
|
||||
result = Android_JNI_FileRead(ctx, buffer, 1, (size_t)amount);
|
||||
if (result <= 0) {
|
||||
/* Failed to read/skip the required amount, so fail */
|
||||
return -1;
|
||||
}
|
||||
|
||||
movement -= result;
|
||||
}
|
||||
|
||||
} else if (movement < 0) {
|
||||
/* We can't seek backwards so we have to reopen the file and seek */
|
||||
/* forwards which obviously isn't very efficient */
|
||||
Internal_Android_JNI_FileClose(ctx, SDL_FALSE);
|
||||
Internal_Android_JNI_FileOpen(ctx);
|
||||
Android_JNI_FileSeek(ctx, newPosition, RW_SEEK_SET);
|
||||
}
|
||||
}
|
||||
|
||||
return ctx->hidden.androidio.position;
|
||||
|
||||
off64_t result;
|
||||
AAsset *asset = (AAsset*) ctx->hidden.androidio.asset;
|
||||
result = AAsset_seek64(asset, offset, whence);
|
||||
return result;
|
||||
}
|
||||
|
||||
int Android_JNI_FileClose(SDL_RWops *ctx)
|
||||
{
|
||||
return Internal_Android_JNI_FileClose(ctx, SDL_TRUE);
|
||||
AAsset *asset = (AAsset*) ctx->hidden.androidio.asset;
|
||||
AAsset_close(asset);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int Android_JNI_SetClipboardText(const char *text)
|
||||
|
Loading…
Reference in New Issue
Block a user