source_file.cc revision 5f1c94371a64b3196d4be9466099bb892df9b88e
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#include "tools/gn/source_file.h"
6
7#include "base/logging.h"
8#include "build/build_config.h"
9#include "tools/gn/filesystem_utils.h"
10#include "tools/gn/source_dir.h"
11
12SourceFile::SourceFile() {
13}
14
15SourceFile::SourceFile(const base::StringPiece& p)
16    : value_(p.data(), p.size()) {
17  DCHECK(!value_.empty());
18  DCHECK(value_[0] == '/');
19  DCHECK(!EndsWithSlash(value_));
20}
21
22SourceFile::SourceFile(SwapIn, std::string* value) {
23  value_.swap(*value);
24  DCHECK(!value_.empty());
25  DCHECK(value_[0] == '/');
26  DCHECK(!EndsWithSlash(value_));
27}
28
29SourceFile::~SourceFile() {
30}
31
32std::string SourceFile::GetName() const {
33  if (is_null())
34    return std::string();
35
36  DCHECK(value_.find('/') != std::string::npos);
37  size_t last_slash = value_.rfind('/');
38  return std::string(&value_[last_slash + 1],
39                     value_.size() - last_slash - 1);
40}
41
42SourceDir SourceFile::GetDir() const {
43  if (is_null())
44    return SourceDir();
45
46  DCHECK(value_.find('/') != std::string::npos);
47  size_t last_slash = value_.rfind('/');
48  return SourceDir(base::StringPiece(&value_[0], last_slash + 1));
49}
50
51base::FilePath SourceFile::Resolve(const base::FilePath& source_root) const {
52  if (is_null())
53    return base::FilePath();
54
55  std::string converted;
56  if (is_system_absolute()) {
57    if (value_.size() > 2 && value_[2] == ':') {
58      // Windows path, strip the leading slash.
59      converted.assign(&value_[1], value_.size() - 1);
60    } else {
61      converted.assign(value_);
62    }
63    return base::FilePath(UTF8ToFilePath(converted));
64  }
65
66  converted.assign(&value_[2], value_.size() - 2);
67  return source_root.Append(UTF8ToFilePath(converted))
68      .NormalizePathSeparatorsTo('/');
69}
70