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// Copyright (c) 2013 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 TOOLS_GN_PATH_OUTPUT_H_
#define TOOLS_GN_PATH_OUTPUT_H_
#include <iosfwd>
#include <string>
#include "base/basictypes.h"
#include "base/strings/string_piece.h"
#include "tools/gn/escape.h"
#include "tools/gn/source_dir.h"
class OutputFile;
class SourceFile;
namespace base {
class FilePath;
}
// Writes file names to streams assuming a certain input directory and
// escaping rules. This gives us a central place for managing this state.
class PathOutput {
public:
// Controls whether writing directory names include the trailing slash.
// Often we don't want the trailing slash when writing out to a command line,
// especially on Windows where it's a backslash and might be interpreted as
// escaping the thing following it.
enum DirSlashEnding {
DIR_INCLUDE_LAST_SLASH,
DIR_NO_LAST_SLASH,
};
PathOutput(const SourceDir& current_dir, const base::StringPiece& source_root,
EscapingMode escaping);
~PathOutput();
// Read-only since inverse_current_dir_ is computed depending on this.
EscapingMode escaping_mode() const { return options_.mode; }
const SourceDir& current_dir() const { return current_dir_; }
// Getter/setters for flags inside the escape options.
bool inhibit_quoting() const { return options_.inhibit_quoting; }
void set_inhibit_quoting(bool iq) { options_.inhibit_quoting = iq; }
void set_escape_platform(EscapingPlatform p) { options_.platform = p; }
void WriteFile(std::ostream& out, const SourceFile& file) const;
void WriteFile(std::ostream& out, const OutputFile& file) const;
void WriteFile(std::ostream& out, const base::FilePath& file) const;
// Writes the given OutputFiles with spaces separating them. This will also
// write an initial space before the first item.
void WriteFiles(std::ostream& out,
const std::vector<OutputFile>& files) const;
// This variant assumes the dir ends in a trailing slash or is empty.
void WriteDir(std::ostream& out,
const SourceDir& dir,
DirSlashEnding slash_ending) const;
void WriteDir(std::ostream& out,
const OutputFile& file,
DirSlashEnding slash_ending) const;
// Backend for WriteFile and WriteDir. This appends the given file or
// directory string to the file.
void WritePathStr(std::ostream& out, const base::StringPiece& str) const;
private:
// Takes the given string and writes it out, appending to the inverse
// current dir. This assumes leading slashes have been trimmed.
void WriteSourceRelativeString(std::ostream& out,
const base::StringPiece& str) const;
SourceDir current_dir_;
// Uses system slashes if convert_slashes_to_system_.
std::string inverse_current_dir_;
// Since the inverse_current_dir_ depends on some of these, we don't expose
// this directly to modification.
EscapeOptions options_;
};
#endif // TOOLS_GN_PATH_OUTPUT_H_
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