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