ADDED: `EncodeDataBase64()` and `DecodeDataBase64()`

src/raylib.h

@@ -1052,8 +1052,11 @@ RLAPI char **GetDroppedFiles(int *count);                         // Get dropped
 RLAPI void ClearDroppedFiles(void);                               // Clear dropped files paths buffer (free memory)
 RLAPI long GetFileModTime(const char *fileName);                  // Get file modification time (last write time)
 
+// Compression/Encoding functionality
 RLAPI unsigned char *CompressData(unsigned char *data, int dataLength, int *compDataLength);        // Compress data (DEFLATE algorithm)
 RLAPI unsigned char *DecompressData(unsigned char *compData, int compDataLength, int *dataLength);  // Decompress data (DEFLATE algorithm)
+RLAPI char *EncodeDataBase64(const unsigned char *data, int dataLength, int *outputLength);         // Encode data to Base64 string
+RLAPI unsigned char *DecodeDataBase64(unsigned char *data, int *outputLength);                      // Decode Base64 string data
 
 // Persistent storage management
 RLAPI bool SaveStorageValue(unsigned int position, int value);    // Save integer value to storage file (to defined position), returns true on success

src/rcore.c

@@ -3038,6 +3038,100 @@ unsigned char *DecompressData(unsigned char *compData, int compDataLength, int *
     return data;
 }
 
+// Encode data to Base64 string
+char *EncodeDataBase64(const unsigned char *data, int dataLength, int *outputLength)
+{
+    static const unsigned char base64encodeTable[] = {
+        'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
+        'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
+        'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'
+    };
+
+    static const int modTable[] = { 0, 2, 1 };
+
+    *outputLength = 4*((dataLength + 2)/3);
+
+    char *encodedData = RL_MALLOC(*outputLength);
+
+    if (encodedData == NULL) return NULL;
+
+    for (int i = 0, j = 0; i < dataLength;)
+    {
+        unsigned int octetA = (i < dataLength)? (unsigned char)data[i++] : 0;
+        unsigned int octetB = (i < dataLength)? (unsigned char)data[i++] : 0;
+        unsigned int octetC = (i < dataLength)? (unsigned char)data[i++] : 0;
+
+        unsigned int triple = (octetA << 0x10) + (octetB << 0x08) + octetC;
+
+        encodedData[j++] = base64encodeTable[(triple >> 3*6) & 0x3F];
+        encodedData[j++] = base64encodeTable[(triple >> 2*6) & 0x3F];
+        encodedData[j++] = base64encodeTable[(triple >> 1*6) & 0x3F];
+        encodedData[j++] = base64encodeTable[(triple >> 0*6) & 0x3F];
+    }
+
+    for (int i = 0; i < modTable[dataLength%3]; i++) encodedData[*outputLength - 1 - i] = '=';
+
+    return encodedData;
+}
+
+// Decode Base64 string data
+unsigned char *DecodeDataBase64(unsigned char *data, int *outputLength)
+{
+    static const unsigned char base64decodeTable[] = {
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 62, 0, 0, 0, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
+        11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
+        37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
+    };
+
+    // Get output size of Base64 input data
+    int outLength = 0;
+    for (int i = 0; data[4*i] != 0; i++)
+    {
+        if (data[4*i + 3] == '=')
+        {
+            if (data[4*i + 2] == '=') outLength += 1;
+            else outLength += 2;
+        }
+        else outLength += 3;
+    }
+
+    // Allocate memory to store decoded Base64 data
+    unsigned char *decodedData = (unsigned char *)RL_MALLOC(outLength);
+
+    for (int i = 0; i < outLength/3; i++)
+    {
+        unsigned char a = base64decodeTable[(int)data[4*i]];
+        unsigned char b = base64decodeTable[(int)data[4*i + 1]];
+        unsigned char c = base64decodeTable[(int)data[4*i + 2]];
+        unsigned char d = base64decodeTable[(int)data[4*i + 3]];
+
+        decodedData[3*i] = (a << 2) | (b >> 4);
+        decodedData[3*i + 1] = (b << 4) | (c >> 2);
+        decodedData[3*i + 2] = (c << 6) | d;
+    }
+
+    if (outLength%3 == 1)
+    {
+        int n = outLength/3;
+        unsigned char a = base64decodeTable[(int)data[4*n]];
+        unsigned char b = base64decodeTable[(int)data[4*n + 1]];
+        decodedData[outLength - 1] = (a << 2) | (b >> 4);
+    }
+    else if (outLength%3 == 2)
+    {
+        int n = outLength/3;
+        unsigned char a = base64decodeTable[(int)data[4*n]];
+        unsigned char b = base64decodeTable[(int)data[4*n + 1]];
+        unsigned char c = base64decodeTable[(int)data[4*n + 2]];
+        decodedData[outLength - 2] = (a << 2) | (b >> 4);
+        decodedData[outLength - 1] = (b << 4) | (c >> 2);
+    }
+
+    *outputLength = outLength;
+    return decodedData;
+}
+
 // Save integer value to storage file (to defined position)
 // NOTE: Storage positions is directly related to file memory layout (4 bytes each integer)
 bool SaveStorageValue(unsigned int position, int value)