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_ESCAPE_H_ 6 #define TOOLS_GN_ESCAPE_H_ 7 8 #include <iosfwd> 9 10 #include "base/strings/string_piece.h" 11 12 enum EscapingMode { 13 // No escaping. 14 ESCAPE_NONE, 15 16 // Ninja string escaping. 17 ESCAPE_NINJA, 18 19 // For writing commands to ninja files. 20 ESCAPE_NINJA_COMMAND, 21 }; 22 23 enum EscapingPlatform { 24 // Do escaping for the current platform. 25 ESCAPE_PLATFORM_CURRENT, 26 27 // Force escaping for the given platform. 28 ESCAPE_PLATFORM_POSIX, 29 ESCAPE_PLATFORM_WIN, 30 }; 31 32 struct EscapeOptions { 33 EscapeOptions() 34 : mode(ESCAPE_NONE), 35 platform(ESCAPE_PLATFORM_CURRENT), 36 inhibit_quoting(false) { 37 } 38 39 EscapingMode mode; 40 41 // Controls how "fork" escaping is done. You will generally want to keep the 42 // default "current" platform. 43 EscapingPlatform platform; 44 45 // When the escaping mode is ESCAPE_SHELL, the escaper will normally put 46 // quotes around things with spaces. If this value is set to true, we'll 47 // disable the quoting feature and just add the spaces. 48 // 49 // This mode is for when quoting is done at some higher-level. Defaults to 50 // false. Note that Windows has strange behavior where the meaning of the 51 // backslashes changes according to if it is followed by a quote. The 52 // escaping rules assume that a double-quote will be appended to the result. 53 bool inhibit_quoting; 54 }; 55 56 // Escapes the given input, returnining the result. 57 // 58 // If needed_quoting is non-null, whether the string was or should have been 59 // (if inhibit_quoting was set) quoted will be written to it. This value should 60 // be initialized to false by the caller and will be written to only if it's 61 // true (the common use-case is for chaining calls). 62 std::string EscapeString(const base::StringPiece& str, 63 const EscapeOptions& options, 64 bool* needed_quoting); 65 66 // Same as EscapeString but writes the results to the given stream, saving a 67 // copy. 68 void EscapeStringToStream(std::ostream& out, 69 const base::StringPiece& str, 70 const EscapeOptions& options); 71 72 #endif // TOOLS_GN_ESCAPE_H_ 73