naiveproxy/tools/gn/source_file.cc
2018-01-28 13:32:06 -05:00

84 lines
2.2 KiB
C++

// 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_file.h"
#include "base/logging.h"
#include "build/build_config.h"
#include "tools/gn/filesystem_utils.h"
#include "tools/gn/source_dir.h"
namespace {
void AssertValueSourceFileString(const std::string& s) {
#if defined(OS_WIN)
DCHECK(s[0] == '/' ||
(s.size() > 2 && s[0] != '/' && s[1] == ':' && IsSlash(s[2])));
#else
DCHECK(s[0] == '/');
#endif
DCHECK(!EndsWithSlash(s)) << s;
}
} // namespace
SourceFile::SourceFile() = default;
SourceFile::SourceFile(const base::StringPiece& p)
: value_(p.data(), p.size()) {
DCHECK(!value_.empty());
AssertValueSourceFileString(value_);
NormalizePath(&value_);
}
SourceFile::SourceFile(SwapIn, std::string* value) {
value_.swap(*value);
DCHECK(!value_.empty());
AssertValueSourceFileString(value_);
NormalizePath(&value_);
}
SourceFile::~SourceFile() = default;
std::string SourceFile::GetName() const {
if (is_null())
return std::string();
DCHECK(value_.find('/') != std::string::npos);
size_t last_slash = value_.rfind('/');
return std::string(&value_[last_slash + 1],
value_.size() - last_slash - 1);
}
SourceDir SourceFile::GetDir() const {
if (is_null())
return SourceDir();
DCHECK(value_.find('/') != std::string::npos);
size_t last_slash = value_.rfind('/');
return SourceDir(base::StringPiece(&value_[0], last_slash + 1));
}
base::FilePath SourceFile::Resolve(const base::FilePath& source_root) const {
if (is_null())
return base::FilePath();
std::string converted;
if (is_system_absolute()) {
if (value_.size() > 2 && value_[2] == ':') {
// Windows path, strip the leading slash.
converted.assign(&value_[1], value_.size() - 1);
} else {
converted.assign(value_);
}
return base::FilePath(UTF8ToFilePath(converted));
}
converted.assign(&value_[2], value_.size() - 2);
if (source_root.empty())
return UTF8ToFilePath(converted).NormalizePathSeparatorsTo('/');
return source_root.Append(UTF8ToFilePath(converted))
.NormalizePathSeparatorsTo('/');
}