From 704298c0c24c289d01f4d5005d5bd3ea6bd56d65 Mon Sep 17 00:00:00 2001 From: Eric Wing Date: Tue, 9 Feb 2016 17:36:42 -0800 Subject: [PATCH] Android: C89 cleanup to avoid warnings/errors since the default gcc mode on Android is still pre-C99. --- src/core/android/SDL_android.c | 175 ++++++++++++++++--------- src/joystick/android/SDL_sysjoystick.c | 3 +- src/main/android/SDL_android_main.c | 8 +- 3 files changed, 123 insertions(+), 63 deletions(-) diff --git a/src/core/android/SDL_android.c b/src/core/android/SDL_android.c index 44f6e8085..498434978 100644 --- a/src/core/android/SDL_android.c +++ b/src/core/android/SDL_android.c @@ -561,6 +561,7 @@ int Android_JNI_OpenAudioDevice(int sampleRate, int is16Bit, int channelCount, i { jboolean audioBufferStereo; int audioBufferFrames; + jboolean isCopy; JNIEnv *env = Android_JNI_GetEnv(); @@ -602,7 +603,7 @@ int Android_JNI_OpenAudioDevice(int sampleRate, int is16Bit, int channelCount, i return 0; } - jboolean isCopy = JNI_FALSE; + isCopy = JNI_FALSE; if (audioBuffer16Bit) { audioBufferPinned = (*env)->GetShortArrayElements(env, (jshortArray)audioBuffer, &isCopy); audioBufferFrames = (*env)->GetArrayLength(env, (jshortArray)audioBuffer); @@ -654,10 +655,12 @@ void Android_JNI_CloseAudioDevice(void) /* If the parameter silent is truthy then SDL_SetError() will not be called. */ static SDL_bool Android_JNI_ExceptionOccurred(SDL_bool silent) { - SDL_assert(LocalReferenceHolder_IsActive()); JNIEnv *mEnv = Android_JNI_GetEnv(); + jthrowable exception; - jthrowable exception = (*mEnv)->ExceptionOccurred(mEnv); + SDL_assert(LocalReferenceHolder_IsActive()); + + exception = (*mEnv)->ExceptionOccurred(mEnv); if (exception != NULL) { jmethodID mid; @@ -667,13 +670,16 @@ static SDL_bool Android_JNI_ExceptionOccurred(SDL_bool silent) if (!silent) { jclass exceptionClass = (*mEnv)->GetObjectClass(mEnv, exception); jclass classClass = (*mEnv)->FindClass(mEnv, "java/lang/Class"); + jstring exceptionName; + const char* exceptionNameUTF8; + jstring exceptionMessage; mid = (*mEnv)->GetMethodID(mEnv, classClass, "getName", "()Ljava/lang/String;"); - jstring exceptionName = (jstring)(*mEnv)->CallObjectMethod(mEnv, exceptionClass, mid); - const char* exceptionNameUTF8 = (*mEnv)->GetStringUTFChars(mEnv, exceptionName, 0); + exceptionName = (jstring)(*mEnv)->CallObjectMethod(mEnv, exceptionClass, mid); + exceptionNameUTF8 = (*mEnv)->GetStringUTFChars(mEnv, exceptionName, 0); mid = (*mEnv)->GetMethodID(mEnv, exceptionClass, "getMessage", "()Ljava/lang/String;"); - jstring exceptionMessage = (jstring)(*mEnv)->CallObjectMethod(mEnv, exception, mid); + exceptionMessage = (jstring)(*mEnv)->CallObjectMethod(mEnv, exception, mid); if (exceptionMessage != NULL) { const char* exceptionMessageUTF8 = (*mEnv)->GetStringUTFChars(mEnv, exceptionMessage, 0); @@ -856,6 +862,7 @@ int Android_JNI_FileOpen(SDL_RWops* ctx, struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__); JNIEnv *mEnv = Android_JNI_GetEnv(); int retval; + jstring fileNameJString; if (!LocalReferenceHolder_Init(&refs, mEnv)) { LocalReferenceHolder_Cleanup(&refs); @@ -867,7 +874,7 @@ int Android_JNI_FileOpen(SDL_RWops* ctx, return -1; } - jstring fileNameJString = (*mEnv)->NewStringUTF(mEnv, fileName); + fileNameJString = (*mEnv)->NewStringUTF(mEnv, fileName); ctx->hidden.androidio.fileNameRef = (*mEnv)->NewGlobalRef(mEnv, fileNameJString); ctx->hidden.androidio.inputStreamRef = NULL; ctx->hidden.androidio.readableByteChannelRef = NULL; @@ -886,10 +893,11 @@ size_t Android_JNI_FileRead(SDL_RWops* ctx, void* buffer, 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; } - size_t result = read(ctx->hidden.androidio.fd, buffer, bytesMax ); + result = read(ctx->hidden.androidio.fd, buffer, bytesMax ); if (result > 0) { ctx->hidden.androidio.position += result; LocalReferenceHolder_Cleanup(&refs); @@ -901,19 +909,23 @@ size_t Android_JNI_FileRead(SDL_RWops* ctx, void* buffer, jlong bytesRemaining = (jlong) (size * maxnum); jlong bytesMax = (jlong) (ctx->hidden.androidio.size - ctx->hidden.androidio.position); int bytesRead = 0; + JNIEnv *mEnv; + 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; - JNIEnv *mEnv = Android_JNI_GetEnv(); + mEnv = Android_JNI_GetEnv(); if (!LocalReferenceHolder_Init(&refs, mEnv)) { LocalReferenceHolder_Cleanup(&refs); return 0; } - jobject readableByteChannel = (jobject)ctx->hidden.androidio.readableByteChannelRef; - jmethodID readMethod = (jmethodID)ctx->hidden.androidio.readMethod; - jobject byteBuffer = (*mEnv)->NewDirectByteBuffer(mEnv, buffer, bytesRemaining); + readableByteChannel = (jobject)ctx->hidden.androidio.readableByteChannelRef; + readMethod = (jmethodID)ctx->hidden.androidio.readMethod; + byteBuffer = (*mEnv)->NewDirectByteBuffer(mEnv, buffer, bytesRemaining); while (bytesRemaining > 0) { /* result = readableByteChannel.read(...); */ @@ -1003,6 +1015,7 @@ Sint64 Android_JNI_FileSize(SDL_RWops* ctx) 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; @@ -1021,11 +1034,12 @@ Sint64 Android_JNI_FileSeek(SDL_RWops* ctx, Sint64 offset, int whence) } whence = SEEK_SET; - off_t ret = lseek(ctx->hidden.androidio.fd, (off_t)offset, SEEK_SET); + 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: @@ -1049,17 +1063,18 @@ Sint64 Android_JNI_FileSeek(SDL_RWops* ctx, Sint64 offset, int whence) newPosition = ctx->hidden.androidio.size; } - Sint64 movement = newPosition - ctx->hidden.androidio.position; + 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; } - size_t result = Android_JNI_FileRead(ctx, buffer, 1, amount); + result = Android_JNI_FileRead(ctx, buffer, 1, amount); if (result <= 0) { /* Failed to read/skip the required amount, so fail */ return -1; @@ -1092,21 +1107,23 @@ static jobject Android_JNI_GetSystemServiceObject(const char* name) struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__); JNIEnv* env = Android_JNI_GetEnv(); jobject retval = NULL; + jstring service; + jmethodID mid; + jobject context; + jobject manager; if (!LocalReferenceHolder_Init(&refs, env)) { LocalReferenceHolder_Cleanup(&refs); return NULL; } - jstring service = (*env)->NewStringUTF(env, name); - - jmethodID mid; + service = (*env)->NewStringUTF(env, name); mid = (*env)->GetStaticMethodID(env, mActivityClass, "getContext", "()Landroid/content/Context;"); - jobject context = (*env)->CallStaticObjectMethod(env, mActivityClass, mid); + context = (*env)->CallStaticObjectMethod(env, mActivityClass, mid); mid = (*env)->GetMethodID(env, mActivityClass, "getSystemServiceFromUiThread", "(Ljava/lang/String;)Ljava/lang/Object;"); - jobject manager = (*env)->CallObjectMethod(env, context, mid, service); + manager = (*env)->CallObjectMethod(env, context, mid, service); (*env)->DeleteLocalRef(env, service); @@ -1118,11 +1135,12 @@ static jobject Android_JNI_GetSystemServiceObject(const char* name) #define SETUP_CLIPBOARD(error) \ struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__); \ JNIEnv* env = Android_JNI_GetEnv(); \ + jobject clipboard; \ if (!LocalReferenceHolder_Init(&refs, env)) { \ LocalReferenceHolder_Cleanup(&refs); \ return error; \ } \ - jobject clipboard = Android_JNI_GetSystemServiceObject("clipboard"); \ + clipboard = Android_JNI_GetSystemServiceObject("clipboard"); \ if (!clipboard) { \ LocalReferenceHolder_Cleanup(&refs); \ return error; \ @@ -1133,14 +1151,17 @@ static jobject Android_JNI_GetSystemServiceObject(const char* name) int Android_JNI_SetClipboardText(const char* text) { + /* Watch out for C89 scoping rules because of the macro */ SETUP_CLIPBOARD(-1) - jmethodID mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, clipboard), "setText", "(Ljava/lang/CharSequence;)V"); - jstring string = (*env)->NewStringUTF(env, text); - (*env)->CallVoidMethod(env, clipboard, mid, string); - (*env)->DeleteGlobalRef(env, clipboard); - (*env)->DeleteLocalRef(env, string); - + /* Nest the following in a scope to avoid C89 declaration rules triggered by the macro */ + { + jmethodID mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, clipboard), "setText", "(Ljava/lang/CharSequence;)V"); + jstring string = (*env)->NewStringUTF(env, text); + (*env)->CallVoidMethod(env, clipboard, mid, string); + (*env)->DeleteGlobalRef(env, clipboard); + (*env)->DeleteLocalRef(env, string); + } CLEANUP_CLIPBOARD(); return 0; @@ -1148,25 +1169,30 @@ int Android_JNI_SetClipboardText(const char* text) char* Android_JNI_GetClipboardText(void) { + /* Watch out for C89 scoping rules because of the macro */ SETUP_CLIPBOARD(SDL_strdup("")) - jmethodID mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, clipboard), "getText", "()Ljava/lang/CharSequence;"); - jobject sequence = (*env)->CallObjectMethod(env, clipboard, mid); - (*env)->DeleteGlobalRef(env, clipboard); - if (sequence) { - mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, sequence), "toString", "()Ljava/lang/String;"); - jstring string = (jstring)((*env)->CallObjectMethod(env, sequence, mid)); - const char* utf = (*env)->GetStringUTFChars(env, string, 0); - if (utf) { - char* text = SDL_strdup(utf); - (*env)->ReleaseStringUTFChars(env, string, utf); + /* Nest the following in a scope to avoid C89 declaration rules triggered by the macro */ + { + jmethodID mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, clipboard), "getText", "()Ljava/lang/CharSequence;"); + jobject sequence = (*env)->CallObjectMethod(env, clipboard, mid); + (*env)->DeleteGlobalRef(env, clipboard); + if (sequence) { + jstring string; + const char* utf; + mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, sequence), "toString", "()Ljava/lang/String;"); + string = (jstring)((*env)->CallObjectMethod(env, sequence, mid)); + utf = (*env)->GetStringUTFChars(env, string, 0); + if (utf) { + char* text = SDL_strdup(utf); + (*env)->ReleaseStringUTFChars(env, string, utf); - CLEANUP_CLIPBOARD(); + CLEANUP_CLIPBOARD(); - return text; + return text; + } } } - CLEANUP_CLIPBOARD(); return SDL_strdup(""); @@ -1174,10 +1200,13 @@ char* Android_JNI_GetClipboardText(void) SDL_bool Android_JNI_HasClipboardText(void) { + jmethodID mid; + jboolean has; + /* Watch out for C89 scoping rules because of the macro */ SETUP_CLIPBOARD(SDL_FALSE) - jmethodID mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, clipboard), "hasText", "()Z"); - jboolean has = (*env)->CallBooleanMethod(env, clipboard, mid); + mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, clipboard), "hasText", "()Z"); + has = (*env)->CallBooleanMethod(env, clipboard, mid); (*env)->DeleteGlobalRef(env, clipboard); CLEANUP_CLIPBOARD(); @@ -1194,49 +1223,61 @@ int Android_JNI_GetPowerInfo(int* plugged, int* charged, int* battery, int* seco { struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__); JNIEnv* env = Android_JNI_GetEnv(); + jmethodID mid; + jobject context; + jstring action; + jclass cls; + jobject filter; + jobject intent; + jstring iname; + jmethodID imid; + jstring bname; + jmethodID bmid; if (!LocalReferenceHolder_Init(&refs, env)) { LocalReferenceHolder_Cleanup(&refs); return -1; } - jmethodID mid; mid = (*env)->GetStaticMethodID(env, mActivityClass, "getContext", "()Landroid/content/Context;"); - jobject context = (*env)->CallStaticObjectMethod(env, mActivityClass, mid); + context = (*env)->CallStaticObjectMethod(env, mActivityClass, mid); - jstring action = (*env)->NewStringUTF(env, "android.intent.action.BATTERY_CHANGED"); + action = (*env)->NewStringUTF(env, "android.intent.action.BATTERY_CHANGED"); - jclass cls = (*env)->FindClass(env, "android/content/IntentFilter"); + cls = (*env)->FindClass(env, "android/content/IntentFilter"); mid = (*env)->GetMethodID(env, cls, "", "(Ljava/lang/String;)V"); - jobject filter = (*env)->NewObject(env, cls, mid, action); + filter = (*env)->NewObject(env, cls, mid, action); (*env)->DeleteLocalRef(env, action); mid = (*env)->GetMethodID(env, mActivityClass, "registerReceiver", "(Landroid/content/BroadcastReceiver;Landroid/content/IntentFilter;)Landroid/content/Intent;"); - jobject intent = (*env)->CallObjectMethod(env, context, mid, NULL, filter); + intent = (*env)->CallObjectMethod(env, context, mid, NULL, filter); (*env)->DeleteLocalRef(env, filter); cls = (*env)->GetObjectClass(env, intent); - jstring iname; - jmethodID imid = (*env)->GetMethodID(env, cls, "getIntExtra", "(Ljava/lang/String;I)I"); + imid = (*env)->GetMethodID(env, cls, "getIntExtra", "(Ljava/lang/String;I)I"); + /* Watch out for C89 scoping rules because of the macro */ #define GET_INT_EXTRA(var, key) \ + int var; \ iname = (*env)->NewStringUTF(env, key); \ - int var = (*env)->CallIntMethod(env, intent, imid, iname, -1); \ + var = (*env)->CallIntMethod(env, intent, imid, iname, -1); \ (*env)->DeleteLocalRef(env, iname); - jstring bname; - jmethodID bmid = (*env)->GetMethodID(env, cls, "getBooleanExtra", "(Ljava/lang/String;Z)Z"); + bmid = (*env)->GetMethodID(env, cls, "getBooleanExtra", "(Ljava/lang/String;Z)Z"); + /* Watch out for C89 scoping rules because of the macro */ #define GET_BOOL_EXTRA(var, key) \ + int var; \ bname = (*env)->NewStringUTF(env, key); \ - int var = (*env)->CallBooleanMethod(env, intent, bmid, bname, JNI_FALSE); \ + var = (*env)->CallBooleanMethod(env, intent, bmid, bname, JNI_FALSE); \ (*env)->DeleteLocalRef(env, bname); if (plugged) { + /* Watch out for C89 scoping rules because of the macro */ GET_INT_EXTRA(plug, "plugged") /* == BatteryManager.EXTRA_PLUGGED (API 5) */ if (plug == -1) { LocalReferenceHolder_Cleanup(&refs); @@ -1248,6 +1289,7 @@ int Android_JNI_GetPowerInfo(int* plugged, int* charged, int* battery, int* seco } if (charged) { + /* Watch out for C89 scoping rules because of the macro */ GET_INT_EXTRA(status, "status") /* == BatteryManager.EXTRA_STATUS (API 5) */ if (status == -1) { LocalReferenceHolder_Cleanup(&refs); @@ -1267,8 +1309,20 @@ int Android_JNI_GetPowerInfo(int* plugged, int* charged, int* battery, int* seco } if (percent) { - GET_INT_EXTRA(level, "level") /* == BatteryManager.EXTRA_LEVEL (API 5) */ - GET_INT_EXTRA(scale, "scale") /* == BatteryManager.EXTRA_SCALE (API 5) */ + int level; + int scale; + + /* Watch out for C89 scoping rules because of the macro */ + { + GET_INT_EXTRA(level_temp, "level") /* == BatteryManager.EXTRA_LEVEL (API 5) */ + level = level_temp; + } + /* Watch out for C89 scoping rules because of the macro */ + { + GET_INT_EXTRA(scale_temp, "scale") /* == BatteryManager.EXTRA_SCALE (API 5) */ + scale = scale_temp; + } + if ((level == -1) || (scale == -1)) { LocalReferenceHolder_Cleanup(&refs); return -1; @@ -1321,14 +1375,16 @@ void Android_JNI_PollInputDevices(void) int Android_JNI_SendMessage(int command, int param) { JNIEnv *env = Android_JNI_GetEnv(); + jmethodID mid; + jboolean success; if (!env) { return -1; } - jmethodID mid = (*env)->GetStaticMethodID(env, mActivityClass, "sendMessage", "(II)Z"); + mid = (*env)->GetStaticMethodID(env, mActivityClass, "sendMessage", "(II)Z"); if (!mid) { return -1; } - jboolean success = (*env)->CallStaticBooleanMethod(env, mActivityClass, mid, command, param); + success = (*env)->CallStaticBooleanMethod(env, mActivityClass, mid, command, param); return success ? 0 : -1; } @@ -1340,11 +1396,12 @@ void Android_JNI_SuspendScreenSaver(SDL_bool suspend) void Android_JNI_ShowTextInput(SDL_Rect *inputRect) { JNIEnv *env = Android_JNI_GetEnv(); + jmethodID mid; if (!env) { return; } - jmethodID mid = (*env)->GetStaticMethodID(env, mActivityClass, "showTextInput", "(IIII)Z"); + mid = (*env)->GetStaticMethodID(env, mActivityClass, "showTextInput", "(IIII)Z"); if (!mid) { return; } diff --git a/src/joystick/android/SDL_sysjoystick.c b/src/joystick/android/SDL_sysjoystick.c index 8656a5322..20c177923 100644 --- a/src/joystick/android/SDL_sysjoystick.c +++ b/src/joystick/android/SDL_sysjoystick.c @@ -323,6 +323,7 @@ Android_RemoveJoystick(int device_id) { SDL_joylist_item *item = SDL_joylist; SDL_joylist_item *prev = NULL; + int retval; #if !SDL_EVENTS_DISABLED SDL_Event event; #endif @@ -340,7 +341,7 @@ Android_RemoveJoystick(int device_id) return -1; } - const int retval = item->device_instance; + retval = item->device_instance; if (item->joystick) { item->joystick->hwdata = NULL; } diff --git a/src/main/android/SDL_android_main.c b/src/main/android/SDL_android_main.c index 4173bcb1d..8a85ccf13 100644 --- a/src/main/android/SDL_android_main.c +++ b/src/main/android/SDL_android_main.c @@ -22,6 +22,8 @@ JNIEXPORT int JNICALL Java_org_libsdl_app_SDLActivity_nativeInit(JNIEnv* env, jc int i; int argc; int status; + int len; + char** argv; /* This interface could expand with ABI negotiation, callbacks, etc. */ SDL_Android_Init(env, cls); @@ -30,8 +32,8 @@ JNIEXPORT int JNICALL Java_org_libsdl_app_SDLActivity_nativeInit(JNIEnv* env, jc /* Prepare the arguments. */ - int len = (*env)->GetArrayLength(env, array); - char* argv[1 + len + 1]; + len = (*env)->GetArrayLength(env, array); + argv = SDL_stack_alloc(char*, 1 + len + 1); argc = 0; /* Use the name "app_process" so PHYSFS_platformCalcBaseDir() works. https://bitbucket.org/MartinFelis/love-android-sdl2/issue/23/release-build-crash-on-start @@ -66,7 +68,7 @@ JNIEXPORT int JNICALL Java_org_libsdl_app_SDLActivity_nativeInit(JNIEnv* env, jc for (i = 0; i < argc; ++i) { SDL_free(argv[i]); } - + SDL_stack_free(argv); /* Do not issue an exit or the whole application will terminate instead of just the SDL thread */ /* exit(status); */