diff options
Diffstat (limited to 'src/fs/io/FileReader.cxx')
-rw-r--r-- | src/fs/io/FileReader.cxx | 78 |
1 files changed, 61 insertions, 17 deletions
diff --git a/src/fs/io/FileReader.cxx b/src/fs/io/FileReader.cxx index d63cd8ab0..e54f6f3a8 100644 --- a/src/fs/io/FileReader.cxx +++ b/src/fs/io/FileReader.cxx @@ -1,5 +1,5 @@ /* - * Copyright (C) 2003-2014 The Music Player Daemon Project + * Copyright (C) 2003-2015 The Music Player Daemon Project * http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify @@ -19,7 +19,7 @@ #include "config.h" #include "FileReader.hxx" -#include "system/fd_util.h" +#include "fs/FileInfo.hxx" #include "util/Error.hxx" #ifdef WIN32 @@ -30,8 +30,18 @@ FileReader::FileReader(Path _path, Error &error) nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr)) { - if (handle == INVALID_HANDLE_VALUE) - error.FormatLastError("Failed to open %s", path.c_str()); + if (handle == INVALID_HANDLE_VALUE) { + const auto path_utf8 = path.ToUTF8(); + error.FormatLastError("Failed to open %s", path_utf8.c_str()); + } +} + +bool +FileReader::GetFileInfo(FileInfo &info, Error &error) const +{ + assert(IsDefined()); + + return ::GetFileInfo(path, info, error); } size_t @@ -41,13 +51,28 @@ FileReader::Read(void *data, size_t size, Error &error) DWORD nbytes; if (!ReadFile(handle, data, size, &nbytes, nullptr)) { - error.FormatLastError("Failed to read from %s", path.c_str()); + const auto path_utf8 = path.ToUTF8(); + error.FormatLastError("Failed to read from %s", + path_utf8.c_str()); nbytes = 0; } return nbytes; } +bool +FileReader::Seek(off_t offset, Error &error) +{ + assert(IsDefined()); + + auto result = SetFilePointer(handle, offset, nullptr, FILE_BEGIN); + const bool success = result != INVALID_SET_FILE_POINTER; + if (!success) + error.SetLastError("Failed to seek"); + + return success; +} + void FileReader::Close() { @@ -58,26 +83,33 @@ FileReader::Close() #else -#include <fcntl.h> -#include <unistd.h> -#include <errno.h> - FileReader::FileReader(Path _path, Error &error) - :path(_path), - fd(open_cloexec(path.c_str(), - O_RDONLY, - 0)) + :path(_path) { - if (fd < 0) + fd.OpenReadOnly(path.c_str()); + if (!fd.IsDefined()) error.FormatErrno("Failed to open %s", path.c_str()); } +bool +FileReader::GetFileInfo(FileInfo &info, Error &error) const +{ + assert(IsDefined()); + + const bool success = fstat(fd.Get(), &info.st) == 0; + if (!success) + error.FormatErrno("Failed to access %s", + path.ToUTF8().c_str()); + + return success; +} + size_t FileReader::Read(void *data, size_t size, Error &error) { assert(IsDefined()); - ssize_t nbytes = read(fd, data, size); + ssize_t nbytes = fd.Read(data, size); if (nbytes < 0) { error.FormatErrno("Failed to read from %s", path.c_str()); nbytes = 0; @@ -86,13 +118,25 @@ FileReader::Read(void *data, size_t size, Error &error) return nbytes; } +bool +FileReader::Seek(off_t offset, Error &error) +{ + assert(IsDefined()); + + auto result = fd.Seek(offset); + const bool success = result >= 0; + if (!success) + error.SetErrno("Failed to seek"); + + return success; +} + void FileReader::Close() { assert(IsDefined()); - close(fd); - fd = -1; + fd.Close(); } #endif |