--- /dev/null
+/**********************************************************************************************
+*
+* raylib.utils - Some common utility functions
+*
+* CONFIGURATION:
+*
+* #define SUPPORT_TRACELOG
+* Show TraceLog() output messages
+* NOTE: By default LOG_DEBUG traces not shown
+*
+*
+* LICENSE: zlib/libpng
+*
+* Copyright (c) 2014-2021 Ramon Santamaria (@raysan5)
+*
+* 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 "raylib.h" // WARNING: Required for: LogType enum
+
+// Check if config flags have been externally provided on compilation line
+#if !defined(EXTERNAL_CONFIG_FLAGS)
+ #include "config.h" // Defines module configuration flags
+#endif
+
+#include "utils.h"
+
+#if defined(PLATFORM_ANDROID)
+ #include <errno.h> // Required for: Android error types
+ #include <android/log.h> // Required for: Android log system: __android_log_vprint()
+ #include <android/asset_manager.h> // Required for: Android assets manager: AAsset, AAssetManager_open(), ...
+#endif
+
+#include <stdlib.h> // Required for: exit()
+#include <stdio.h> // Required for: FILE, fopen(), fseek(), ftell(), fread(), fwrite(), fprintf(), vprintf(), fclose()
+#include <stdarg.h> // Required for: va_list, va_start(), va_end()
+#include <string.h> // Required for: strcpy(), strcat()
+
+//----------------------------------------------------------------------------------
+// Defines and Macros
+//----------------------------------------------------------------------------------
+#ifndef MAX_TRACELOG_MSG_LENGTH
+ #define MAX_TRACELOG_MSG_LENGTH 128 // Max length of one trace-log message
+#endif
+#ifndef MAX_UWP_MESSAGES
+ #define MAX_UWP_MESSAGES 512 // Max UWP messages to process
+#endif
+
+//----------------------------------------------------------------------------------
+// Global Variables Definition
+//----------------------------------------------------------------------------------
+static int logTypeLevel = LOG_INFO; // Minimum log type level
+
+static TraceLogCallback traceLog = NULL; // TraceLog callback function pointer
+static LoadFileDataCallback loadFileData = NULL; // LoadFileData callback funtion pointer
+static SaveFileDataCallback saveFileData = NULL; // SaveFileText callback funtion pointer
+static LoadFileTextCallback loadFileText = NULL; // LoadFileText callback funtion pointer
+static SaveFileTextCallback saveFileText = NULL; // SaveFileText callback funtion pointer
+
+//----------------------------------------------------------------------------------
+// Functions to set internal callbacks
+//----------------------------------------------------------------------------------
+void SetTraceLogCallback(TraceLogCallback callback) { traceLog = callback; } // Set custom trace log
+void SetLoadFileDataCallback(LoadFileDataCallback callback) { loadFileData = callback; } // Set custom file data loader
+void SetSaveFileDataCallback(SaveFileDataCallback callback) { saveFileData = callback; } // Set custom file data saver
+void SetLoadFileTextCallback(LoadFileTextCallback callback) { loadFileText = callback; } // Set custom file text loader
+void SetSaveFileTextCallback(SaveFileTextCallback callback) { saveFileText = callback; } // Set custom file text saver
+
+
+#if defined(PLATFORM_ANDROID)
+static AAssetManager *assetManager = NULL; // Android assets manager pointer
+static const char *internalDataPath = NULL; // Android internal data path
+#endif
+
+//----------------------------------------------------------------------------------
+// Module specific Functions Declaration
+//----------------------------------------------------------------------------------
+#if defined(PLATFORM_ANDROID)
+FILE *funopen(const void *cookie, int (*readfn)(void *, char *, int), int (*writefn)(void *, const char *, int),
+ fpos_t (*seekfn)(void *, fpos_t, int), int (*closefn)(void *));
+
+static int android_read(void *cookie, char *buf, int size);
+static int android_write(void *cookie, const char *buf, int size);
+static fpos_t android_seek(void *cookie, fpos_t offset, int whence);
+static int android_close(void *cookie);
+#endif
+
+//----------------------------------------------------------------------------------
+// Module Functions Definition - Utilities
+//----------------------------------------------------------------------------------
+
+// Set the current threshold (minimum) log level
+void SetTraceLogLevel(int logType) { logTypeLevel = logType; }
+
+// Show trace log messages (LOG_INFO, LOG_WARNING, LOG_ERROR, LOG_DEBUG)
+void TraceLog(int logType, const char *text, ...)
+{
+#if defined(SUPPORT_TRACELOG)
+ // Message has level below current threshold, don't emit
+ if (logType < logTypeLevel) return;
+
+ va_list args;
+ va_start(args, text);
+
+ if (traceLog)
+ {
+ traceLog(logType, text, args);
+ va_end(args);
+ return;
+ }
+
+#if defined(PLATFORM_ANDROID)
+ switch(logType)
+ {
+ case LOG_TRACE: __android_log_vprint(ANDROID_LOG_VERBOSE, "raylib", text, args); break;
+ case LOG_DEBUG: __android_log_vprint(ANDROID_LOG_DEBUG, "raylib", text, args); break;
+ case LOG_INFO: __android_log_vprint(ANDROID_LOG_INFO, "raylib", text, args); break;
+ case LOG_WARNING: __android_log_vprint(ANDROID_LOG_WARN, "raylib", text, args); break;
+ case LOG_ERROR: __android_log_vprint(ANDROID_LOG_ERROR, "raylib", text, args); break;
+ case LOG_FATAL: __android_log_vprint(ANDROID_LOG_FATAL, "raylib", text, args); break;
+ default: break;
+ }
+#else
+ char buffer[MAX_TRACELOG_MSG_LENGTH] = { 0 };
+
+ switch (logType)
+ {
+ case LOG_TRACE: strcpy(buffer, "TRACE: "); break;
+ case LOG_DEBUG: strcpy(buffer, "DEBUG: "); break;
+ case LOG_INFO: strcpy(buffer, "INFO: "); break;
+ case LOG_WARNING: strcpy(buffer, "WARNING: "); break;
+ case LOG_ERROR: strcpy(buffer, "ERROR: "); break;
+ case LOG_FATAL: strcpy(buffer, "FATAL: "); break;
+ default: break;
+ }
+
+ strcat(buffer, text);
+ strcat(buffer, "\n");
+ vprintf(buffer, args);
+#endif
+
+ va_end(args);
+
+ if (logType == LOG_ERROR) exit(1); // If error, exit program
+
+#endif // SUPPORT_TRACELOG
+}
+
+// Internal memory allocator
+// NOTE: Initializes to zero by default
+void *MemAlloc(int size)
+{
+ void *ptr = RL_CALLOC(size, 1);
+ return ptr;
+}
+
+// Internal memory reallocator
+void *MemRealloc(void *ptr, int size)
+{
+ void *ret = RL_REALLOC(ptr, size);
+ return ret;
+}
+
+// Internal memory free
+void MemFree(void *ptr)
+{
+ RL_FREE(ptr);
+}
+
+// Load data from file into a buffer
+unsigned char *LoadFileData(const char *fileName, unsigned int *bytesRead)
+{
+ unsigned char *data = NULL;
+ *bytesRead = 0;
+
+ if (fileName != NULL)
+ {
+ if (loadFileData)
+ {
+ data = loadFileData(fileName, bytesRead);
+ return data;
+ }
+#if defined(SUPPORT_STANDARD_FILEIO)
+ FILE *file = fopen(fileName, "rb");
+
+ if (file != NULL)
+ {
+ // WARNING: On binary streams SEEK_END could not be found,
+ // using fseek() and ftell() could not work in some (rare) cases
+ fseek(file, 0, SEEK_END);
+ int size = ftell(file);
+ fseek(file, 0, SEEK_SET);
+
+ if (size > 0)
+ {
+ data = (unsigned char *)RL_MALLOC(size*sizeof(unsigned char));
+
+ // NOTE: fread() returns number of read elements instead of bytes, so we read [1 byte, size elements]
+ unsigned int count = (unsigned int)fread(data, sizeof(unsigned char), size, file);
+ *bytesRead = count;
+
+ if (count != size) TRACELOG(LOG_WARNING, "FILEIO: [%s] File partially loaded", fileName);
+ else TRACELOG(LOG_INFO, "FILEIO: [%s] File loaded successfully", fileName);
+ }
+ else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to read file", fileName);
+
+ fclose(file);
+ }
+ else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to open file", fileName);
+#else
+ TRACELOG(LOG_WARNING, "FILEIO: Standard file io not supported, use custom file callback");
+#endif
+ }
+ else TRACELOG(LOG_WARNING, "FILEIO: File name provided is not valid");
+
+ return data;
+}
+
+// Unload file data allocated by LoadFileData()
+void UnloadFileData(unsigned char *data)
+{
+ RL_FREE(data);
+}
+
+// Save data to file from buffer
+bool SaveFileData(const char *fileName, void *data, unsigned int bytesToWrite)
+{
+ bool success = false;
+
+ if (fileName != NULL)
+ {
+ if (saveFileData)
+ {
+ return saveFileData(fileName, data, bytesToWrite);
+ }
+#if defined(SUPPORT_STANDARD_FILEIO)
+ FILE *file = fopen(fileName, "wb");
+
+ if (file != NULL)
+ {
+ unsigned int count = (unsigned int)fwrite(data, sizeof(unsigned char), bytesToWrite, file);
+
+ if (count == 0) TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to write file", fileName);
+ else if (count != bytesToWrite) TRACELOG(LOG_WARNING, "FILEIO: [%s] File partially written", fileName);
+ else TRACELOG(LOG_INFO, "FILEIO: [%s] File saved successfully", fileName);
+
+ int result = fclose(file);
+ if (result == 0) success = true;
+ }
+ else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to open file", fileName);
+#else
+ TRACELOG(LOG_WARNING, "FILEIO: Standard file io not supported, use custom file callback");
+#endif
+ }
+ else TRACELOG(LOG_WARNING, "FILEIO: File name provided is not valid");
+
+ return success;
+}
+
+// Load text data from file, returns a '\0' terminated string
+// NOTE: text chars array should be freed manually
+char *LoadFileText(const char *fileName)
+{
+ char *text = NULL;
+
+ if (fileName != NULL)
+ {
+ if (loadFileText)
+ {
+ text = loadFileText(fileName);
+ return text;
+ }
+#if defined(SUPPORT_STANDARD_FILEIO)
+ FILE *file = fopen(fileName, "rt");
+
+ if (file != NULL)
+ {
+ // WARNING: When reading a file as 'text' file,
+ // text mode causes carriage return-linefeed translation...
+ // ...but using fseek() should return correct byte-offset
+ fseek(file, 0, SEEK_END);
+ unsigned int size = (unsigned int)ftell(file);
+ fseek(file, 0, SEEK_SET);
+
+ if (size > 0)
+ {
+ text = (char *)RL_MALLOC((size + 1)*sizeof(char));
+ unsigned int count = (unsigned int)fread(text, sizeof(char), size, file);
+
+ // WARNING: \r\n is converted to \n on reading, so,
+ // read bytes count gets reduced by the number of lines
+ if (count < size) text = RL_REALLOC(text, count + 1);
+
+ // Zero-terminate the string
+ text[count] = '\0';
+
+ TRACELOG(LOG_INFO, "FILEIO: [%s] Text file loaded successfully", fileName);
+ }
+ else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to read text file", fileName);
+
+ fclose(file);
+ }
+ else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to open text file", fileName);
+#else
+ TRACELOG(LOG_WARNING, "FILEIO: Standard file io not supported, use custom file callback");
+#endif
+ }
+ else TRACELOG(LOG_WARNING, "FILEIO: File name provided is not valid");
+
+ return text;
+}
+
+// Unload file text data allocated by LoadFileText()
+void UnloadFileText(unsigned char *text)
+{
+ RL_FREE(text);
+}
+
+// Save text data to file (write), string must be '\0' terminated
+bool SaveFileText(const char *fileName, char *text)
+{
+ bool success = false;
+
+ if (fileName != NULL)
+ {
+ if (saveFileText)
+ {
+ return saveFileText(fileName, text);
+ }
+#if defined(SUPPORT_STANDARD_FILEIO)
+ FILE *file = fopen(fileName, "wt");
+
+ if (file != NULL)
+ {
+ int count = fprintf(file, "%s", text);
+
+ if (count < 0) TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to write text file", fileName);
+ else TRACELOG(LOG_INFO, "FILEIO: [%s] Text file saved successfully", fileName);
+
+ int result = fclose(file);
+ if (result == 0) success = true;
+ }
+ else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to open text file", fileName);
+#else
+ TRACELOG(LOG_WARNING, "FILEIO: Standard file io not supported, use custom file callback");
+#endif
+ }
+ else TRACELOG(LOG_WARNING, "FILEIO: File name provided is not valid");
+
+ return success;
+}
+
+#if defined(PLATFORM_ANDROID)
+// Initialize asset manager from android app
+void InitAssetManager(AAssetManager *manager, const char *dataPath)
+{
+ assetManager = manager;
+ internalDataPath = dataPath;
+}
+
+// Replacement for fopen()
+// Ref: https://developer.android.com/ndk/reference/group/asset
+FILE *android_fopen(const char *fileName, const char *mode)
+{
+ if (mode[0] == 'w')
+ {
+ // TODO: fopen() is mapped to android_fopen() that only grants read access
+ // to assets directory through AAssetManager but we want to also be able to
+ // write data when required using the standard stdio FILE access functions
+ // Ref: https://stackoverflow.com/questions/11294487/android-writing-saving-files-from-native-code-only
+ #undef fopen
+ return fopen(TextFormat("%s/%s", internalDataPath, fileName), mode);
+ #define fopen(name, mode) android_fopen(name, mode)
+ }
+ else
+ {
+ // NOTE: AAsset provides access to read-only asset
+ AAsset *asset = AAssetManager_open(assetManager, fileName, AASSET_MODE_UNKNOWN);
+
+ if (asset != NULL)
+ {
+ // Return pointer to file in the assets
+ return funopen(asset, android_read, android_write, android_seek, android_close);
+ }
+ else
+ {
+ #undef fopen
+ // Just do a regular open if file is not found in the assets
+ return fopen(TextFormat("%s/%s", internalDataPath, fileName), mode);
+ #define fopen(name, mode) android_fopen(name, mode)
+ }
+ }
+}
+#endif // PLATFORM_ANDROID
+
+//----------------------------------------------------------------------------------
+// Module specific Functions Definition
+//----------------------------------------------------------------------------------
+#if defined(PLATFORM_ANDROID)
+static int android_read(void *cookie, char *buf, int size)
+{
+ return AAsset_read((AAsset *)cookie, buf, size);
+}
+
+static int android_write(void *cookie, const char *buf, int size)
+{
+ TRACELOG(LOG_WARNING, "ANDROID: Failed to provide write access to APK");
+
+ return EACCES;
+}
+
+static fpos_t android_seek(void *cookie, fpos_t offset, int whence)
+{
+ return AAsset_seek((AAsset *)cookie, offset, whence);
+}
+
+static int android_close(void *cookie)
+{
+ AAsset_close((AAsset *)cookie);
+ return 0;
+}
+#endif // PLATFORM_ANDROID
projects / pistorm / blobdiff