_fixup

Source/Engine/Platform/Apple/AppleFileSystem.cpp

@@ -22,6 +22,65 @@
 #include <stdlib.h>
 #include <fcntl.h>
 
+bool AppleFileSystem::CopyFile(const StringView& dst, const StringView& src)
+{
+    const StringAsANSI<> srcANSI(*src, src.Length());
+    const StringAsANSI<> dstANSI(*dst, dst.Length());
+
+    int srcFile, dstFile;
+    char buffer[4096];
+    ssize_t readSize;
+    int cachedError;
+
+    srcFile = open(srcANSI.Get(), O_RDONLY);
+    if (srcFile < 0)
+        return true;
+    dstFile = open(dstANSI.Get(), O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
+    if (dstFile < 0)
+        goto out_error;
+
+    while (readSize = read(srcFile, buffer, sizeof(buffer)), readSize > 0)
+    {
+        char* ptr = buffer;
+        ssize_t writeSize;
+
+        do
+        {
+            writeSize = write(dstFile, ptr, readSize);
+            if (writeSize >= 0)
+            {
+                readSize -= writeSize;
+                ptr += writeSize;
+            }
+            else if (errno != EINTR)
+            {
+                goto out_error;
+            }
+        } while (readSize > 0);
+    }
+
+    if (readSize == 0)
+    {
+        if (close(dstFile) < 0)
+        {
+            dstFile = -1;
+            goto out_error;
+        }
+        close(srcFile);
+
+        // Success
+        return false;
+    }
+
+    out_error:
+        cachedError = errno;
+    close(srcFile);
+    if (dstFile >= 0)
+        close(dstFile);
+    errno = cachedError;
+    return true;
+}
+
 void AppleFileSystem::GetSpecialFolderPath(const SpecialFolder type, String& result)
 {
     String home;