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65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
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// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_WEBSOCKETS_WEBSOCKET_EXTENSION_PARSER_H_
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#define NET_WEBSOCKETS_WEBSOCKET_EXTENSION_PARSER_H_
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#include <stddef.h>
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#include <string>
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#include <vector>
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#include "base/compiler_specific.h"
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#include "base/macros.h"
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#include "base/strings/string_piece.h"
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#include "net/base/net_export.h"
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#include "net/websockets/websocket_extension.h"
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namespace net {
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class NET_EXPORT_PRIVATE WebSocketExtensionParser {
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public:
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WebSocketExtensionParser();
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~WebSocketExtensionParser();
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// Parses the given string as a Sec-WebSocket-Extensions header value.
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//
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// There must be no newline characters in the input. LWS-concatenation must
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// have already been done before calling this method.
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//
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// Returns true if the method was successful (no syntax error was found).
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bool Parse(const char* data, size_t size);
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bool Parse(const std::string& data) {
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return Parse(data.data(), data.size());
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}
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// Returns the result of the last Parse() method call.
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const std::vector<WebSocketExtension>& extensions() const {
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return extensions_;
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}
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private:
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WARN_UNUSED_RESULT bool Consume(char c);
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WARN_UNUSED_RESULT bool ConsumeExtension(WebSocketExtension* extension);
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WARN_UNUSED_RESULT bool ConsumeExtensionParameter(
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WebSocketExtension::Parameter* parameter);
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WARN_UNUSED_RESULT bool ConsumeToken(base::StringPiece* token);
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WARN_UNUSED_RESULT bool ConsumeQuotedToken(std::string* token);
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void ConsumeSpaces();
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WARN_UNUSED_RESULT bool Lookahead(char c);
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WARN_UNUSED_RESULT bool ConsumeIfMatch(char c);
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// The current position in the input string.
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const char* current_;
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// The pointer of the end of the input string.
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const char* end_;
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std::vector<WebSocketExtension> extensions_;
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DISALLOW_COPY_AND_ASSIGN(WebSocketExtensionParser);
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};
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} // namespace net
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#endif // NET_WEBSOCKETS_WEBSOCKET_EXTENSION_PARSER_H_
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