REXM: ADDED: core_compute_hash

examples/core/core_compute_hash.c

@@ -0,0 +1,143 @@
+/*******************************************************************************************
+*
+*   raylib [core] example - compute hash
+*
+*   Example complexity rating: [★★☆☆] 2/4
+*
+*   Example originally created with raylib 5.6-dev, last time updated with raylib 5.6-dev
+*
+*   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+*   BSD-like license that allows static linking with closed source software
+*
+*   Copyright (c) 2025 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#define RAYGUI_IMPLEMENTATION
+#include "raygui.h"
+
+//----------------------------------------------------------------------------------
+// Module Functions Declaration
+//----------------------------------------------------------------------------------
+static char *GetDataAsHexText(const unsigned int *data, int dataSize);
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [core] example - compute hash");
+
+    // UI controls variables
+    char textInput[96] = "The quick brown fox jumps over the lazy dog.";
+    bool textBoxEditMode = false;
+    bool btnComputeHashes = false;
+
+    // Data hash values
+    unsigned int hashCRC32 = 0;
+    unsigned int *hashMD5 = NULL;
+    unsigned int *hashSHA1 = NULL;
+    unsigned int *hashSHA256 = NULL;
+
+    // Base64 encoded data
+    char *base64Text = NULL;
+    int base64TextSize = 0;
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        if (btnComputeHashes)
+        {
+            int textInputLen = strlen(textInput);
+
+            // Encode data to Base64 string (includes NULL terminator), memory must be MemFree()
+            base64Text = EncodeDataBase64((unsigned char *)textInput, textInputLen, &base64TextSize);
+            
+            hashCRC32 = ComputeCRC32((unsigned char *)textInput, textInputLen);     // Compute CRC32 hash code (4 bytes)
+            hashMD5 = ComputeMD5((unsigned char *)textInput, textInputLen);         // Compute MD5 hash code, returns static int[4] (16 bytes)
+            hashSHA1 = ComputeSHA1((unsigned char *)textInput, textInputLen);       // Compute SHA1 hash code, returns static int[5] (20 bytes)
+            hashSHA256 = ComputeSHA256((unsigned char *)textInput, textInputLen);   // Compute SHA256 hash code, returns static int[8] (32 bytes)
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            GuiSetStyle(DEFAULT, TEXT_SIZE, 20);
+            GuiSetStyle(DEFAULT, TEXT_SPACING, 2);
+            GuiLabel((Rectangle){ 40, 26, 720, 32 }, "INPUT DATA (TEXT):");
+            GuiSetStyle(DEFAULT, TEXT_SPACING, 1);
+            GuiSetStyle(DEFAULT, TEXT_SIZE, 10);
+
+            if (GuiTextBox((Rectangle){ 40, 64, 720, 32 }, textInput, 95, textBoxEditMode)) textBoxEditMode = !textBoxEditMode;
+
+            btnComputeHashes = GuiButton((Rectangle){ 40, 64 + 40, 720, 32 }, "COMPUTE INPUT DATA HASHES");
+
+            GuiSetStyle(DEFAULT, TEXT_SIZE, 20);
+            GuiSetStyle(DEFAULT, TEXT_SPACING, 2);
+            GuiLabel((Rectangle){ 40, 160, 720, 32 }, "INPUT DATA HASH VALUES:");
+            GuiSetStyle(DEFAULT, TEXT_SPACING, 1);
+            GuiSetStyle(DEFAULT, TEXT_SIZE, 10);
+
+            GuiSetStyle(TEXTBOX, TEXT_READONLY, 1);
+            GuiLabel((Rectangle){ 40, 200, 120, 32 }, "CRC32 [32 bit]:");
+            GuiTextBox((Rectangle){ 40 + 120, 200, 720 - 120, 32 }, GetDataAsHexText(&hashCRC32, 1), 120, false);
+            GuiLabel((Rectangle){ 40, 200 + 36, 120, 32 }, "MD5 [128 bit]:");
+            GuiTextBox((Rectangle){ 40 + 120, 200 + 36, 720 - 120, 32 }, GetDataAsHexText(hashMD5, 4), 120, false);
+            GuiLabel((Rectangle){ 40, 200 + 36*2, 120, 32 }, "SHA1 [160 bit]:");
+            GuiTextBox((Rectangle){ 40 + 120, 200 + 36*2, 720 - 120, 32 }, GetDataAsHexText(hashSHA1, 5), 120, false);
+            GuiLabel((Rectangle){ 40, 200 + 36*3, 120, 32 }, "SHA256 [256 bit]:");
+            GuiTextBox((Rectangle){ 40 + 120, 200 + 36*3, 720 - 120, 32 }, GetDataAsHexText(hashSHA256, 8), 120, false);
+
+            GuiSetState(STATE_FOCUSED);
+            GuiLabel((Rectangle){ 40, 200 + 36*5 - 30, 320, 32 }, "BONUS - BAS64 ENCODED STRING:");
+            GuiSetState(STATE_NORMAL);
+            GuiLabel((Rectangle){ 40, 200 + 36*5, 120, 32 }, "BASE64 ENCODING:");
+            GuiTextBox((Rectangle){ 40 + 120, 200 + 36*5, 720 - 120, 32 }, base64Text, 120, false);
+            GuiSetStyle(TEXTBOX, TEXT_READONLY, 0);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    MemFree(base64Text);    // Free Base64 text data
+
+    CloseWindow();          // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}
+
+//----------------------------------------------------------------------------------
+// Module Functions Definition
+//----------------------------------------------------------------------------------
+static char *GetDataAsHexText(const unsigned int *data, int dataSize)
+{
+    static char text[128] = { 0 };
+    memset(text, 0, 128);
+
+    if ((data != NULL) && (dataSize > 0) && (dataSize < ((128/8) - 1)))
+    {
+        for (int i = 0; i < dataSize; i++) TextCopy(text + i*8, TextFormat("%08X", data[i]));
+    }
+    else TextCopy(text, "00000000");
+
+    return text;
+}