experimental/skp_to_pdf_md5 optionally also outputs pdf files

experimental/tools/SkDmuxWStream.cpp

+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkDmuxWStream.h"
+
+SkDmuxWStream::SkDmuxWStream(SkWStream* const streamArray[], size_t count)
+    : fWStreams(streamArray, static_cast<int>(count)), fBytesWritten(0) {}
+
+SkDmuxWStream::~SkDmuxWStream() {
+    for (int i = 0; i < fWStreams.count(); ++i) {
+        fWStreams[i]->flush();
+    }
+}
+
+bool SkDmuxWStream::write(const void* buffer, size_t size) {
+    for (int i = 0; i < fWStreams.count(); ++i) {
+        if (!fWStreams[i]->write(buffer, size)) {
+            return false;
+        }
+    }
+    fBytesWritten += size;
+    return true;
+}
+
+void SkDmuxWStream::newline() {
+    for (int i = 0; i < fWStreams.count(); ++i) {
+        fWStreams[i]->newline();
+    }
+    fBytesWritten += 1;  // This may be a lie.
+}
+
+void SkDmuxWStream::flush() {
+    for (int i = 0; i < fWStreams.count(); ++i) {
+        fWStreams[i]->flush();
+    }
+}
+
+size_t SkDmuxWStream::bytesWritten() const { return fBytesWritten; }