From 327864be53415f1f5cd6a32f09fd55d9f2e60f4f Mon Sep 17 00:00:00 2001
From: Rabia Alhaffar <steria773@gmail.com>
Date: Sun, 14 Jun 2020 13:33:34 +0300
Subject: [PATCH] Added DownloadFile function

---
 src/core.c   | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/raylib.h |  1 +
 2 files changed, 55 insertions(+)

diff --git a/src/core.c b/src/core.c
index 94e3fcaa2..9d885a387 100644
--- a/src/core.c
+++ b/src/core.c
@@ -541,6 +541,45 @@ static void *GamepadThread(void *arg);                  // Mouse reading thread
 // Module Functions Definition - Window and OpenGL Context Functions
 //----------------------------------------------------------------------------------
 
+// Function got from Stack Overflow
+// https://stackoverflow.com/questions/2736753/how-to-remove-extension-from-file-name
+const char *remove_extension(char* myStr, char extSep, char pathSep) {
+    char *retStr, *lastExt, *lastPath;
+
+    // Error checks and allocate string.
+
+    if (myStr == NULL) return NULL;
+    if ((retStr = malloc (strlen (myStr) + 1)) == NULL) return NULL;
+
+    // Make a copy and find the relevant characters.
+
+    strcpy (retStr, myStr);
+    lastExt = strrchr (retStr, extSep);
+    lastPath = (pathSep == 0) ? NULL : strrchr (retStr, pathSep);
+
+    // If it has an extension separator.
+
+    if (lastExt != NULL) {
+        // and it's to the right of the path separator.
+
+        if (lastPath != NULL) {
+            if (lastPath < lastExt) {
+                // then remove it.
+
+                *lastExt = '\0';
+            }
+        } else {
+            // Has extension separator with no path separator.
+
+            *lastExt = '\0';
+        }
+    }
+
+    // Return the modified string.
+
+    return retStr;
+}
+
 #if defined(PLATFORM_ANDROID)
 // To allow easier porting to android, we allow the user to define a
 // main function which we call from android_main, defined by ourselves
@@ -2207,6 +2246,21 @@ long GetFileModTime(const char *fileName)
     return 0;
 }
 
+// Downloads a file from source (URL) to directory
+// NOTES: It uses cURL
+void DownloadFile(const char *src,const char *dir)
+{
+    #ifdef __ANDROID__ || TARGET_OS_IPHONE || TARGET_OS_EMBEDDED || TARGET_IPHONE_SIMULATOR
+        return -1;
+    #else
+        if (system("curl --version") == 0) {
+            if (!system(FormatText("cd %s",remove_extension(dir,".","/"))) == 0) system(FormatText("mkdir %s",remove_extension(dir,".","/")));
+            system(FormatText("curl -o %s/%s %s",dir,GetFileName(src),src));
+        }
+        else return -1;
+    #endif
+}
+
 // Compress data (DEFLATE algorythm)
 unsigned char *CompressData(unsigned char *data, int dataLength, int *compDataLength)
 {
diff --git a/src/raylib.h b/src/raylib.h
index 53ad970a0..d48ac9f86 100644
--- a/src/raylib.h
+++ b/src/raylib.h
@@ -1097,6 +1097,7 @@ RLAPI bool IsFileDropped(void);                                   // Check if a
 RLAPI char **GetDroppedFiles(int *count);                         // Get dropped files names (memory should be freed)
 RLAPI void ClearDroppedFiles(void);                               // Clear dropped files paths buffer (free memory)
 RLAPI long GetFileModTime(const char *fileName);                  // Get file modification time (last write time)
+RLAPI void DownloadFile(const char *src,const char *dir);         // Downloads a file from URL to directory
 
 RLAPI unsigned char *CompressData(unsigned char *data, int dataLength, int *compDataLength);        // Compress data (DEFLATE algorythm)
 RLAPI unsigned char *DecompressData(unsigned char *compData, int compDataLength, int *dataLength);  // Decompress data (DEFLATE algorythm)