tools/gn/source_file.cc

   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
  12 SourceFile::SourceFile() {
  13 }
  14
  15 SourceFile::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
  22 SourceFile::SourceFile(SwapIn, std::string* value) {
  23   value_.swap(*value);
  24   DCHECK(!value_.empty());
  25   DCHECK(value_[0] == '/');
  26   DCHECK(!EndsWithSlash(value_));
  27 }
  28
  29 SourceFile::~SourceFile() {
  30 }
  31
  32 std::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
  42 SourceDir 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
  51 base::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   if (source_root.empty())
  68     return UTF8ToFilePath(converted).NormalizePathSeparatorsTo('/');
  69   return source_root.Append(UTF8ToFilePath(converted))
  70       .NormalizePathSeparatorsTo('/');
  71 }