Revert 214254 "Add initial prototype for the GN meta-buildsystem."

trunk/src/tools/gn/path_output.h

-// 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;
-
-// 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,
-             EscapingMode escaping,
-             bool convert_slashes);
-  ~PathOutput();
-
-  // Read-only since inverse_current_dir_ is computed depending on this.
-  EscapingMode escaping_mode() const { return options_.mode; }
-
-  // When true, converts slashes to the system-type path separators (on
-  // Windows, this is a backslash, this is a NOP otherwise).
-  //
-  // Read-only since inverse_current_dir_ is computed depending on this.
-  bool convert_slashes_to_system() const { return options_.convert_slashes; }
-
-  // When the output escaping is ESCAPE_SHELL, the escaper will normally put
-  // quotes around suspect things. If this value is set to true, we'll disable
-  // the quoting feature. This means that in ESCAPE_SHELL mode, strings with
-  // spaces in them qon't be quoted. This mode is for when quoting is done at
-  // some higher-level. Defaults to false.
-  bool inhibit_quoting() const { return options_.inhibit_quoting; }
-  void set_inhibit_quoting(bool iq) { options_.inhibit_quoting = iq; }
-
-  void WriteFile(std::ostream& out, const SourceFile& file) const;
-  void WriteFile(std::ostream& out, const OutputFile& file) const;
-  void WriteDir(std::ostream& out,
-                const SourceDir& dir,
-                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_