Implement a parser for Content-Disposition header fields

third_party/WebKit/Source/platform/network/ParsedContentDisposition.h

Index: third_party/WebKit/Source/platform/network/ParsedContentDisposition.h
diff --git a/third_party/WebKit/Source/platform/network/ParsedContentDisposition.h b/third_party/WebKit/Source/platform/network/ParsedContentDisposition.h
new file mode 100644
index 0000000000000000000000000000000000000000..7cb7686cf820f62db93cbc7865ade65e96704aae
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+++ b/third_party/WebKit/Source/platform/network/ParsedContentDisposition.h
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+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ParsedContentDisposition_h
+#define ParsedContentDisposition_h
+
+#include "platform/PlatformExport.h"
+#include "platform/network/ParsedContentHeaderFieldParameters.h"
+#include "platform/wtf/Allocator.h"
+#include "platform/wtf/HashMap.h"
+#include "platform/wtf/text/StringHash.h"
+
+namespace blink {
+
+// Parses the content of a Content-Disposition header field into disposition
+// type and parameters and stores them.
+class PLATFORM_EXPORT ParsedContentDisposition final {
+  STACK_ALLOCATED();
+
+ public:
+  using Mode = ParsedContentHeaderFieldParameters::Mode;
+
+  explicit ParsedContentDisposition(const String&, Mode = Mode::kNormal);
+
+  String Type() const { return type_; }
+  String Filename() const;
+
+  // Note that in the case of multiple values for the same name, the last value
+  // is returned.
+  String ParameterValueForName(const String& name) const {
+    return parameters_.ParameterValueForName(name);
+  }
+  size_t ParameterCount() const { return parameters_.ParameterCount(); }
+
+  bool IsValid() const { return parameters_.IsValid(); }
+
+ private:
+  String type_;
+  ParsedContentHeaderFieldParameters parameters_;
+};
+
+}  // namespace blink
+
+#endif