147 lines
3.4 KiB
C++
147 lines
3.4 KiB
C++
/*
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* Copyright (C) 2003-2014 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "LocalStorage.hxx"
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#include "storage/FileInfo.hxx"
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#include "util/Error.hxx"
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#include "fs/FileSystem.hxx"
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static bool
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Stat(Path path, bool follow, FileInfo &info, Error &error)
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{
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struct stat st;
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if (!StatFile(path, st, follow)) {
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error.SetErrno();
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const auto path_utf8 = path.ToUTF8();
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error.FormatPrefix("Failed to stat %s: ", path_utf8.c_str());
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return false;
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}
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if (S_ISREG(st.st_mode))
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info.type = FileInfo::Type::REGULAR;
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else if (S_ISDIR(st.st_mode))
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info.type = FileInfo::Type::DIRECTORY;
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else
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info.type = FileInfo::Type::OTHER;
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info.size = st.st_size;
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info.mtime = st.st_mtime;
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info.device = st.st_dev;
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info.inode = st.st_ino;
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return true;
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}
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std::string
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LocalStorage::MapUTF8(const char *uri_utf8) const
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{
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assert(uri_utf8 != nullptr);
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if (*uri_utf8 == 0)
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return base_utf8;
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return PathTraitsUTF8::Build(base_utf8.c_str(), uri_utf8);
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}
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AllocatedPath
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LocalStorage::MapFS(const char *uri_utf8, Error &error) const
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{
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assert(uri_utf8 != nullptr);
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if (*uri_utf8 == 0)
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return base_fs;
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AllocatedPath path_fs = AllocatedPath::FromUTF8(uri_utf8, error);
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if (!path_fs.IsNull())
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path_fs = AllocatedPath::Build(base_fs, path_fs);
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return path_fs;
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}
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AllocatedPath
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LocalStorage::MapFS(const char *uri_utf8) const
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{
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return MapFS(uri_utf8, IgnoreError());
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}
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bool
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LocalStorage::GetInfo(const char *uri_utf8, bool follow, FileInfo &info,
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Error &error)
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{
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AllocatedPath path_fs = MapFS(uri_utf8, error);
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if (path_fs.IsNull())
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return false;
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return Stat(path_fs, follow, info, error);
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}
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StorageDirectoryReader *
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LocalStorage::OpenDirectory(const char *uri_utf8, Error &error)
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{
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AllocatedPath path_fs = MapFS(uri_utf8, error);
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if (path_fs.IsNull())
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return nullptr;
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LocalDirectoryReader *reader =
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new LocalDirectoryReader(std::move(path_fs));
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if (reader->HasFailed()) {
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error.FormatErrno("Failed to open '%s'", uri_utf8);
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delete reader;
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return nullptr;
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}
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return reader;
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}
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gcc_pure
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static bool
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SkipNameFS(const char *name_fs)
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{
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return name_fs[0] == '.' &&
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(name_fs[1] == 0 ||
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(name_fs[1] == '.' && name_fs[2] == 0));
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}
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const char *
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LocalDirectoryReader::Read()
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{
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while (reader.ReadEntry()) {
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const Path name_fs = reader.GetEntry();
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if (SkipNameFS(name_fs.c_str()))
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continue;
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name_utf8 = name_fs.ToUTF8();
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if (name_utf8.empty())
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continue;
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return name_utf8.c_str();
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}
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return nullptr;
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}
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bool
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LocalDirectoryReader::GetInfo(bool follow, FileInfo &info, Error &error)
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{
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const AllocatedPath path_fs =
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AllocatedPath::Build(base_fs, reader.GetEntry());
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return Stat(path_fs, follow, info, error);
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}
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