1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef TOOLS_GN_PATH_OUTPUT_H_ 6 #define TOOLS_GN_PATH_OUTPUT_H_ 7 8 #include <iosfwd> 9 #include <string> 10 11 #include "base/basictypes.h" 12 #include "base/strings/string_piece.h" 13 #include "tools/gn/escape.h" 14 #include "tools/gn/source_dir.h" 15 16 class OutputFile; 17 class SourceFile; 18 19 namespace base { 20 class FilePath; 21 } 22 23 // Writes file names to streams assuming a certain input directory and 24 // escaping rules. This gives us a central place for managing this state. 25 class PathOutput { 26 public: 27 // Controls whether writing directory names include the trailing slash. 28 // Often we don't want the trailing slash when writing out to a command line, 29 // especially on Windows where it's a backslash and might be interpreted as 30 // escaping the thing following it. 31 enum DirSlashEnding { 32 DIR_INCLUDE_LAST_SLASH, 33 DIR_NO_LAST_SLASH, 34 }; 35 36 PathOutput(const SourceDir& current_dir, EscapingMode escaping); 37 ~PathOutput(); 38 39 // Read-only since inverse_current_dir_ is computed depending on this. 40 EscapingMode escaping_mode() const { return options_.mode; } 41 42 const SourceDir& current_dir() const { return current_dir_; } 43 44 // Getter/setters for flags inside the escape options. 45 bool inhibit_quoting() const { return options_.inhibit_quoting; } 46 void set_inhibit_quoting(bool iq) { options_.inhibit_quoting = iq; } 47 void set_escape_platform(EscapingPlatform p) { options_.platform = p; } 48 49 void WriteFile(std::ostream& out, const SourceFile& file) const; 50 void WriteFile(std::ostream& out, const OutputFile& file) const; 51 void WriteFile(std::ostream& out, const base::FilePath& file) const; 52 void WriteDir(std::ostream& out, 53 const SourceDir& dir, 54 DirSlashEnding slash_ending) const; 55 56 // Backend for WriteFile and WriteDir. This appends the given file or 57 // directory string to the file. 58 void WritePathStr(std::ostream& out, const base::StringPiece& str) const; 59 60 private: 61 // Takes the given string and writes it out, appending to the inverse 62 // current dir. This assumes leading slashes have been trimmed. 63 void WriteSourceRelativeString(std::ostream& out, 64 const base::StringPiece& str) const; 65 66 SourceDir current_dir_; 67 68 // Uses system slashes if convert_slashes_to_system_. 69 std::string inverse_current_dir_; 70 71 // Since the inverse_current_dir_ depends on some of these, we don't expose 72 // this directly to modification. 73 EscapeOptions options_; 74 }; 75 76 #endif // TOOLS_GN_PATH_OUTPUT_H_ 77