Use vendored modules

Signed-off-by: Izuru Yakumo <yakumo.izuru@chaotic.ninja>

git-svn-id: file:///srv/svn/repo/aya/trunk@67 cec141ff-132a-4243-88a5-ce187bd62f94

vendor/github.com/yosssi/gcss/write.go

@@ -0,0 +1,62 @@
+package gcss
+
+import (
+	"bufio"
+	"io"
+	"os"
+)
+
+// writeFlusher is the interface that groups the basic Write and Flush methods.
+type writeFlusher interface {
+	io.Writer
+	Flush() error
+}
+
+var newBufWriter = func(w io.Writer) writeFlusher {
+	return bufio.NewWriter(w)
+}
+
+// write writes the input byte data to the CSS file.
+func write(path string, bc <-chan []byte, berrc <-chan error) (<-chan struct{}, <-chan error) {
+	done := make(chan struct{})
+	errc := make(chan error)
+
+	go func() {
+		f, err := os.Create(path)
+
+		if err != nil {
+			errc <- err
+			return
+		}
+
+		defer f.Close()
+
+		w := newBufWriter(f)
+
+		for {
+			select {
+			case b, ok := <-bc:
+				if !ok {
+					if err := w.Flush(); err != nil {
+						errc <- err
+						return
+					}
+
+					done <- struct{}{}
+
+					return
+				}
+
+				if _, err := w.Write(b); err != nil {
+					errc <- err
+					return
+				}
+			case err := <-berrc:
+				errc <- err
+				return
+			}
+		}
+	}()
+
+	return done, errc
+}