Changes between Version 33 and Version 34 of HashSourceCodes

Timestamp:

Jul 23, 2011, 10:11:36 AM (13 years ago)

Author:

guest

Comment:

Added Vala language

HashSourceCodes

@@ -1267 +1267 @@
 @end
 }}}
+
+
+== Vala ==
+{{{
+public uint64 hash(File file) {
+        try {
+                uint64 h;
+                
+                //get filesize and add it to hash
+                var file_info = file.query_info("*", FileQueryInfoFlags.NONE);
+                h = file_info.get_size();
+                
+                //add first 64kB of file to hash
+                var dis = new DataInputStream(file.read());
+                dis.set_byte_order(DataStreamByteOrder.LITTLE_ENDIAN);
+                for(int i=0; i<65536/sizeof(uint64); i++) {
+                        h += dis.read_uint64();
+                }
+                //add last 64kB of file to hash
+                dis = new DataInputStream(file.read());
+                dis.set_byte_order(DataStreamByteOrder.LITTLE_ENDIAN);
+                dis.skip((size_t)(file_info.get_size() - 65536));
+                for(int i=0; i<65536/sizeof(uint64); i++) {
+                        h += dis.read_uint64();
+                }
+                
+                return h;
+        } catch (Error e) {
+        error("%s", e.message);
+    }
+}
+
+int main () {
+    var file = File.new_for_path ("breakdance.avi");
+    if (!file.query_exists ()) {
+        stderr.printf ("File '%s' doesn't exist.\n", file.get_path ());
+        return 1;
+    }
+    stdout.printf("%016llx\n", hash(file));
+    
+    file = File.new_for_path ("dummy.bin");
+    if (!file.query_exists ()) {
+        stderr.printf ("File '%s' doesn't exist.\n", file.get_path ());
+        return 1;
+    }
+    stdout.printf("%016llx\n", hash(file));
+
+    return 0;
+}
+}}}
+Build with: valac --pkg gio-2.0 hash.vala