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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include <iostream> | 5 #include <iostream> |
6 #include <sstream> | 6 #include <sstream> |
7 | 7 |
8 #include "base/files/file_util.h" | 8 #include "base/files/file_util.h" |
9 #include "base/strings/string_split.h" | 9 #include "base/strings/string_split.h" |
10 #include "base/strings/string_util.h" | 10 #include "base/strings/string_util.h" |
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123 | 123 |
124 // Track how to recreate this file, since we write it a gen time. | 124 // Track how to recreate this file, since we write it a gen time. |
125 // Note this is a hack since the correct output is not a dependency proper, | 125 // Note this is a hack since the correct output is not a dependency proper, |
126 // but an addition of this file to the output of the gn rule that writes it. | 126 // but an addition of this file to the output of the gn rule that writes it. |
127 // This dependency will, however, cause the gen step to be re-run and the | 127 // This dependency will, however, cause the gen step to be re-run and the |
128 // build restarted if the file is missing. | 128 // build restarted if the file is missing. |
129 g_scheduler->AddGenDependency( | 129 g_scheduler->AddGenDependency( |
130 scope->settings()->build_settings()->GetFullPath(source_file)); | 130 scope->settings()->build_settings()->GetFullPath(source_file)); |
131 | 131 |
132 // Compute output. | 132 // Compute output. |
133 std::ostringstream contents; | 133 std::stringstream contents; |
134 if (args[1].type() == Value::LIST) { | 134 if (args[1].type() == Value::LIST) { |
135 const std::vector<Value>& list = args[1].list_value(); | 135 const std::vector<Value>& list = args[1].list_value(); |
136 for (const auto& cur : list) | 136 for (const auto& cur : list) |
137 contents << cur.ToString(false) << std::endl; | 137 contents << cur.ToString(false) << std::endl; |
138 } else { | 138 } else { |
139 contents << args[1].ToString(false); | 139 contents << args[1].ToString(false); |
140 } | 140 } |
141 const std::string& new_contents = contents.str(); | 141 |
142 base::FilePath file_path = | 142 base::FilePath file_path = |
143 scope->settings()->build_settings()->GetFullPath(source_file); | 143 scope->settings()->build_settings()->GetFullPath(source_file); |
144 | 144 |
145 // Make sure we're not replacing the same contents. | 145 // Make sure we're not replacing the same contents. |
146 std::string existing_contents; | 146 if (ContentsEqual(file_path, &contents)) |
147 if (base::ReadFileToString(file_path, &existing_contents) && | |
148 existing_contents == new_contents) | |
149 return Value(); // Nothing to do. | 147 return Value(); // Nothing to do. |
150 | 148 |
151 // Write file, creating the directory if necessary. | 149 // Write file, creating the directory if necessary. |
brettw
2016/02/02 20:50:23
Can the rest of this function and DoWriteFile all
Tomasz Moniuszko
2016/02/03 10:20:30
Done.
| |
152 if (!base::CreateDirectory(file_path.DirName())) { | 150 if (!base::CreateDirectory(file_path.DirName())) { |
153 *err = Err(function->function(), "Unable to create directory.", | 151 *err = Err(function->function(), "Unable to create directory.", |
154 "I was using \"" + FilePathToUTF8(file_path.DirName()) + "\"."); | 152 "I was using \"" + FilePathToUTF8(file_path.DirName()) + "\"."); |
155 return Value(); | 153 return Value(); |
156 } | 154 } |
157 | 155 |
156 const std::string& new_contents = contents.str(); | |
158 int int_size = static_cast<int>(new_contents.size()); | 157 int int_size = static_cast<int>(new_contents.size()); |
159 if (DoWriteFile(file_path, new_contents.c_str(), int_size) | 158 if (DoWriteFile(file_path, new_contents.c_str(), int_size) |
160 != int_size) { | 159 != int_size) { |
161 *err = Err(function->function(), "Unable to write file.", | 160 *err = Err(function->function(), "Unable to write file.", |
162 "I was writing \"" + FilePathToUTF8(file_path) + "\"."); | 161 "I was writing \"" + FilePathToUTF8(file_path) + "\"."); |
163 return Value(); | 162 return Value(); |
164 } | 163 } |
165 return Value(); | 164 return Value(); |
166 } | 165 } |
167 | 166 |
168 } // namespace functions | 167 } // namespace functions |
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