Revert 214254 "Add initial prototype for the GN meta-buildsystem."

trunk/src/tools/gn/source_dir.cc

-// Copyright (c) 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "tools/gn/source_dir.h"
-
-#include "base/logging.h"
-#include "tools/gn/filesystem_utils.h"
-#include "tools/gn/source_file.h"
-
-namespace {
-
-void AssertValueSourceDirString(const std::string& s) {
-  DCHECK(!s.empty());
-  DCHECK(s[0] == '/');
-  DCHECK(EndsWithSlash(s));
-}
-
-}  // namespace
-
-SourceDir::SourceDir() {
-}
-
-SourceDir::SourceDir(const base::StringPiece& p)
-    : value_(p.data(), p.size()) {
-  if (!EndsWithSlash(value_))
-    value_.push_back('/');
-  AssertValueSourceDirString(value_);
-}
-
-SourceDir::~SourceDir() {
-}
-
-SourceFile SourceDir::ResolveRelativeFile(const base::StringPiece& p) const {
-  SourceFile ret;
-
-  // It's an error to resolve an empty string or one that is a directory
-  // (indicated by a trailing slash) because this is the function that expects
-  // to return a file.
-  if (p.empty() || (p.size() > 0 && p[p.size() - 1] == '/'))
-    return SourceFile();
-  if (p[0] == '/') {
-    // Absolute path.
-    ret.value_.assign(p.data(), p.size());
-    return ret;
-  }
-
-  ret.value_.reserve(value_.size() + p.size());
-  ret.value_.assign(value_);
-  ret.value_.append(p.data(), p.size());
-
-  NormalizePath(&ret.value_);
-  return ret;
-}
-
-SourceDir SourceDir::ResolveRelativeDir(const base::StringPiece& p) const {
-  SourceDir ret;
-
-  if (p.empty())
-    return ret;
-  if (p[0] == '/') {
-    // Absolute path.
-    return SourceDir(p);
-  }
-
-  ret.value_.reserve(value_.size() + p.size());
-  ret.value_.assign(value_);
-  ret.value_.append(p.data(), p.size());
-
-  NormalizePath(&ret.value_);
-  if (!EndsWithSlash(ret.value_))
-    ret.value_.push_back('/');
-  AssertValueSourceDirString(ret.value_);
-
-  return ret;
-}
-
-base::FilePath SourceDir::Resolve(const base::FilePath& source_root) const {
-  if (is_null())
-    return base::FilePath();
-
-  std::string converted;
-  if (is_system_absolute()) {
-    converted = value_;
-    ConvertPathToSystem(&converted);
-    return base::FilePath(UTF8ToFilePath(converted));
-  }
-
-  // String the double-leading slash for source-relative paths.
-  converted.assign(&value_[2], value_.size() - 2);
-  ConvertPathToSystem(&converted);
-  return source_root.Append(UTF8ToFilePath(converted));
-}
-
-void SourceDir::SwapInValue(std::string* v) {
-  value_.swap(*v);
-  AssertValueSourceDirString(value_);
-}