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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This is a copy of url/url_canon_stdstring.h circa 2023. It should be used
// only by components/feedback/redaction_tool/. We need a copy because the
// components/feedback/redaction_tool source code is shared into ChromeOS and
// needs to have no dependencies outside of base/.
#ifndef COMPONENTS_FEEDBACK_REDACTION_TOOL_URL_CANON_STDSTRING_H_
#define COMPONENTS_FEEDBACK_REDACTION_TOOL_URL_CANON_STDSTRING_H_
// This header file defines a canonicalizer output method class for STL
// strings. Because the canonicalizer tries not to be dependent on the STL,
// we have segregated it here.
#include <string>
#include "base/compiler_specific.h"
#include "base/memory/raw_ptr_exclusion.h"
#include "components/feedback/redaction_tool/url_canon.h"
namespace redaction_internal {
// Write into a std::string given in the constructor. This object does not own
// the string itself, and the user must ensure that the string stays alive
// throughout the lifetime of this object.
//
// The given string will be appended to; any existing data in the string will
// be preserved.
//
// Note that when canonicalization is complete, the string will likely have
// unused space at the end because we make the string very big to start out
// with (by |initial_size|). This ends up being important because resize
// operations are slow, and because the base class needs to write directly
// into the buffer.
//
// Therefore, the user should call Complete() before using the string that
// this class wrote into.
class StdStringCanonOutput : public CanonOutput {
public:
explicit StdStringCanonOutput(std::string* str);
StdStringCanonOutput(const StdStringCanonOutput&) = delete;
StdStringCanonOutput& operator=(const StdStringCanonOutput&) = delete;
~StdStringCanonOutput() override;
// Must be called after writing has completed but before the string is used.
void Complete();
void Resize(size_t sz) override;
protected:
// RAW_PTR_EXCLUSION: Performance reasons: based on analysis of sampling
// profiler data and tab_search:top100:2020.
RAW_PTR_EXCLUSION std::string* str_;
};
} // namespace redaction_internal
#endif // COMPONENTS_FEEDBACK_REDACTION_TOOL_URL_CANON_STDSTRING_H_
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