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.
8 #include "base/file_util.h"
9 #include "base/strings/string_split.h"
10 #include "base/strings/string_util.h"
11 #include "tools/gn/err.h"
12 #include "tools/gn/filesystem_utils.h"
13 #include "tools/gn/functions.h"
14 #include "tools/gn/input_file.h"
15 #include "tools/gn/parse_tree.h"
16 #include "tools/gn/scheduler.h"
20 const char kWriteFile[] = "write_file";
21 const char kWriteFile_Help[] =
22 "write_file: Write a file to disk.\n"
24 " write_file(filename, data)\n"
26 " If data is a list, the list will be written one-item-per-line with no\n"
27 " quoting or brackets.\n"
29 " TODO(brettw) we probably need an optional third argument to control\n"
35 " Filename to write. This must be within the output directory.\n"
38 " The list or string to write.\n";
40 Value RunWriteFile(Scope* scope,
41 const FunctionCallNode* function,
42 const std::vector<Value>& args,
44 if (args.size() != 2) {
45 *err = Err(function->function(), "Wrong number of args to write_file",
46 "I expected two arguments.");
50 // Compute the file name and make sure it's in the output dir.
51 if (!args[0].VerifyTypeIs(Value::STRING, err))
53 const SourceDir& cur_dir = scope->GetSourceDir();
54 SourceFile source_file = cur_dir.ResolveRelativeFile(args[0].string_value());
55 if (!EnsureStringIsInOutputDir(
56 scope->settings()->build_settings()->build_dir(),
57 source_file.value(), args[0], err))
61 std::ostringstream contents;
62 if (args[1].type() == Value::LIST) {
63 const std::vector<Value>& list = args[1].list_value();
64 for (size_t i = 0; i < list.size(); i++)
65 contents << list[i].ToString(false) << std::endl;
67 contents << args[1].ToString(false);
70 // Write file, creating the directory if necessary.
71 base::FilePath file_path =
72 scope->settings()->build_settings()->GetFullPath(source_file);
73 const std::string& contents_string = contents.str();
74 if (!file_util::CreateDirectory(file_path.DirName())) {
75 *err = Err(function->function(), "Unable to create directory.",
76 "I was using \"" + FilePathToUTF8(file_path.DirName()) + "\".");
79 int int_size = static_cast<int>(contents_string.size());
80 if (file_util::WriteFile(file_path, contents_string.c_str(), int_size)
82 *err = Err(function->function(), "Unable to write file.",
83 "I was writing \"" + FilePathToUTF8(file_path) + "\".");
89 } // namespace functions