now has the ability to fetch album art from last fm

1 files changed, 65 insertions, 0 deletions

diff --git a/src/fetch-file.vala b/src/fetch-file.vala
new file mode 100644
index 0000000..55bfdc3
--- /dev/null
+++ b/src/fetch-file.vala
@@ -0,0 +1,65 @@
+public class FetchFile : Object
+{
+  /* public variables */
+  public string uri {get; construct;}
+
+  /* private variables */
+  private DataInputStream stream;
+  private File? file;
+  private ByteArray data;
+
+  /* public signals */
+  public signal void failed ();
+  public signal void completed (ByteArray data);
+
+  public FetchFile (string uri)
+  {
+    Object (uri: uri);
+  }
+
+  construct
+  {
+    this.file = File.new_for_uri(this.uri);
+    this.data = new ByteArray ();
+  }
+
+  public async void fetch_data ()
+  {
+    //grab our data from our uri
+    try {
+      this.stream = new DataInputStream(this.file.read(null));
+      this.stream.set_byte_order (DataStreamByteOrder.LITTLE_ENDIAN);
+    } catch (GLib.Error e) {
+      this.failed ();
+    }
+    this.read_something_async ();
+  }
+
+  private async void read_something_async ()
+  {
+    ssize_t size = 1024;
+    uint8[] buffer = new uint8[size];
+
+    ssize_t bufsize = 1;
+    do {
+      try {
+        bufsize = yield this.stream.read_async (buffer, size, GLib.Priority.DEFAULT, null);
+        if (bufsize < 1) { break;}
+
+        if (bufsize != size)
+          {
+            uint8[] cpybuf = new uint8[bufsize];
+            Memory.copy (cpybuf, buffer, bufsize);
+            this.data.append (cpybuf);
+          }
+        else
+          {
+            this.data.append (buffer);
+          }
+      } catch (Error e) {
+        this.failed ();
+      }
+    } while (bufsize > 0);
+    this.completed (this.data);
+  }
+}