1 files changed, 75 insertions, 0 deletions
diff --git a/src/sksl/SkSLFileOutputStream.h b/src/sksl/SkSLFileOutputStream.h
new file mode 100644
index 0000000000..f4739306c9
--- /dev/null
+++ b/src/sksl/SkSLFileOutputStream.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SKSL_FILEOUTPUTSTREAM
+#define SKSL_FILEOUTPUTSTREAM
+
+#include "SkSLOutputStream.h"
+#include <stdio.h>
+
+namespace SkSL {
+
+class FileOutputStream : public OutputStream {
+public:
+    FileOutputStream(const char* name) {
+        fFile = fopen(name, "w");
+    }
+
+    ~FileOutputStream() {
+        ASSERT(!fOpen);
+    }
+
+    bool isValid() const override {
+        return nullptr != fFile;
+    }
+
+    void write8(uint8_t b) override {
+        ASSERT(fOpen);
+        if (isValid()) {
+            if (EOF == fputc(b, fFile)) {
+                fFile = nullptr;
+            }
+        }
+    }
+
+    void writeText(const char* s) override {
+        ASSERT(fOpen);
+        if (isValid()) {
+            if (EOF == fputs(s, fFile)) {
+                fFile = nullptr;
+            }
+        }
+    }
+
+    void write(const void* s, size_t size) override {
+        if (isValid()) {
+            size_t written = fwrite(s, 1, size, fFile);
+            if (written != size) {
+                fFile = nullptr;
+            }
+        }
+    }
+
+    bool close() {
+        fOpen = false;
+        if (isValid() && fclose(fFile)) {
+            fFile = nullptr;
+            return false;
+        }
+        return true;
+    }
+
+private:
+    bool fOpen = true;
+    FILE *fFile;
+
+    typedef OutputStream INHERITED;
+};
+
+} // namespace
+
+#endif