diff options
Diffstat (limited to 'libs/raylib/src/utils.c')
| -rw-r--r-- | libs/raylib/src/utils.c | 168 |
1 files changed, 154 insertions, 14 deletions
diff --git a/libs/raylib/src/utils.c b/libs/raylib/src/utils.c index 55b85cb..5ba8b00 100644 --- a/libs/raylib/src/utils.c +++ b/libs/raylib/src/utils.c @@ -46,8 +46,8 @@ #endif #include <stdlib.h> // Required for: exit() -#include <stdio.h> // Required for: printf(), sprintf() -#include <stdarg.h> // Required for: va_list, va_start(), vfprintf(), va_end() +#include <stdio.h> // Required for: vprintf() +#include <stdarg.h> // Required for: va_list, va_start(), va_end() #include <string.h> // Required for: strcpy(), strcat() #define MAX_TRACELOG_BUFFER_SIZE 128 // Max length of one trace-log message @@ -64,7 +64,8 @@ static int logTypeExit = LOG_ERROR; // Log type that exits static TraceLogCallback logCallback = NULL; // Log callback function pointer #if defined(PLATFORM_ANDROID) -static AAssetManager *assetManager = NULL; // Android assets manager pointer +static AAssetManager *assetManager = NULL; // Android assets manager pointer +static const char *internalDataPath = NULL; // Android internal data path #endif #if defined(PLATFORM_UWP) @@ -78,7 +79,6 @@ static UWPMessage *UWPInMessages[MAX_UWP_MESSAGES]; // Messages in from UWP // Module specific Functions Declaration //---------------------------------------------------------------------------------- #if defined(PLATFORM_ANDROID) -// This should be in <stdio.h>, but Travis does not find it... 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 *)); @@ -164,23 +164,163 @@ void TraceLog(int logType, const char *text, ...) #endif // SUPPORT_TRACELOG } +// 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) + { + 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(sizeof(unsigned char)*size); + + // NOTE: fread() returns number of read elements instead of bytes, so we read [1 byte, size elements] + unsigned int count = 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: File name provided is not valid"); + + return data; +} + +// Save data to file from buffer +void SaveFileData(const char *fileName, void *data, unsigned int bytesToWrite) +{ + if (fileName != NULL) + { + FILE *file = fopen(fileName, "wb"); + + if (file != NULL) + { + unsigned int count = 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); + + fclose(file); + } + else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to open file", fileName); + } + else TRACELOG(LOG_WARNING, "FILEIO: File name provided is not valid"); +} + +// 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) + { + FILE *textFile = fopen(fileName, "rt"); + + if (textFile != 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(textFile, 0, SEEK_END); + int size = ftell(textFile); + fseek(textFile, 0, SEEK_SET); + + if (size > 0) + { + text = (char *)RL_MALLOC(sizeof(char)*(size + 1)); + int count = fread(text, sizeof(char), size, textFile); + + // 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(textFile); + } + else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to open text file", fileName); + } + else TRACELOG(LOG_WARNING, "FILEIO: File name provided is not valid"); + + return text; +} + +// Save text data to file (write), string must be '\0' terminated +void SaveFileText(const char *fileName, char *text) +{ + if (fileName != NULL) + { + 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); + + fclose(file); + } + else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to open text file", fileName); + } + else TRACELOG(LOG_WARNING, "FILEIO: File name provided is not valid"); +} + #if defined(PLATFORM_ANDROID) // Initialize asset manager from android app -void InitAssetManager(AAssetManager *manager) +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') return NULL; - - AAsset *asset = AAssetManager_open(assetManager, fileName, 0); - - if (!asset) return NULL; + if (mode[0] == 'w') // TODO: Test! + { + // 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); - return funopen(asset, android_read, android_write, android_seek, android_close); + if (asset != NULL) return funopen(asset, android_read, android_write, android_seek, android_close); + else return NULL; + } } #endif // PLATFORM_ANDROID @@ -195,7 +335,7 @@ static int android_read(void *cookie, char *buf, int size) static int android_write(void *cookie, const char *buf, int size) { - TraceLog(LOG_ERROR, "Can't provide write access to the APK"); + TRACELOG(LOG_WARNING, "ANDROID: Failed to provide write access to APK"); return EACCES; } @@ -252,7 +392,7 @@ void UWPSendMessage(UWPMessage *msg) UWPInMessageId++; UWPInMessages[UWPInMessageId] = msg; } - else TraceLog(LOG_WARNING, "[UWP Messaging] Not enough array space to register new UWP inbound Message."); + else TRACELOG(LOG_WARNING, "UWP: Not enough array space to register new inbound message"); } void SendMessageToUWP(UWPMessage *msg) @@ -262,7 +402,7 @@ void SendMessageToUWP(UWPMessage *msg) UWPOutMessageId++; UWPOutMessages[UWPOutMessageId] = msg; } - else TraceLog(LOG_WARNING, "[UWP Messaging] Not enough array space to register new UWP outward Message."); + else TRACELOG(LOG_WARNING, "UWP: Not enough array space to register new outward message"); } bool HasMessageFromUWP(void) |