/*
- Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2022 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of libdcp.
+
+ libdcp is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
- This program is distributed in the hope that it will be useful,
+ libdcp is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with libdcp. If not, see <http://www.gnu.org/licenses/>.
+
+ In addition, as a special exception, the copyright holders give
+ permission to link the code of portions of this program with the
+ OpenSSL library under certain conditions as described in each
+ individual source file, and distribute linked combinations
+ including the two.
+ You must obey the GNU General Public License in all respects
+ for all of the code used other than OpenSSL. If you modify
+ file(s) with this exception, you may extend this exception to your
+ version of the file(s), but you are not obligated to do so. If you
+ do not wish to do so, delete this exception statement from your
+ version. If you delete this exception statement from all source
+ files in the program, then also delete it here.
*/
-/** @file src/file.cc
- * @brief File class.
- */
+#include "dcp_assert.h"
#include "file.h"
-#include "util.h"
+#include "filesystem.h"
+#ifdef LIBDCP_WINDOWS
+#include <errhandlingapi.h>
+#endif
#include <stdio.h>
+
using namespace dcp;
-/** Read a file into memory.
- * @param file to read.
- */
-File::File (boost::filesystem::path file)
+
+File::~File()
+{
+ close();
+}
+
+
+File::File(boost::filesystem::path path, std::string mode)
+ : _path(path)
+{
+#ifdef LIBDCP_WINDOWS
+ SetLastError(0);
+ std::wstring mode_wide(mode.begin(), mode.end());
+ /* c_str() here should give a UTF-16 string */
+ _file = _wfopen(dcp::filesystem::fix_long_path(path).c_str(), mode_wide.c_str());
+ if (!_file) {
+ _open_error = GetLastError();
+ }
+#else
+ _file = fopen(path.c_str(), mode.c_str());
+ if (!_file) {
+ _open_error = errno;
+ }
+#endif
+}
+
+
+File::File(File&& other)
+ : _path(other._path)
+ , _file(other._file)
+ , _open_error(other._open_error)
+{
+ other._file = nullptr;
+}
+
+
+File&
+File::operator=(File&& other)
+{
+ if (*this != other) {
+ close();
+ _file = other._file;
+ _open_error = other._open_error;
+ other._file = nullptr;
+ }
+ return *this;
+}
+
+
+void
+File::close()
+{
+ if (_file) {
+ fclose(_file);
+ _file = nullptr;
+ }
+}
+
+
+size_t
+File::write(const void *ptr, size_t size, size_t nmemb)
+{
+ DCP_ASSERT(_file);
+ return fwrite(ptr, size, nmemb, _file);
+}
+
+
+size_t
+File::read(void *ptr, size_t size, size_t nmemb)
+{
+ DCP_ASSERT(_file);
+ return fread(ptr, size, nmemb, _file);
+}
+
+
+int
+File::eof()
+{
+ DCP_ASSERT(_file);
+ return feof(_file);
+}
+
+
+char *
+File::gets(char* s, int size)
{
- _size = boost::filesystem::file_size (file);
- _data = new uint8_t[_size];
- FILE* f = dcp::fopen_boost (file, "r");
- assert (f);
- fread (_data, 1, _size, f);
- fclose (f);
+ DCP_ASSERT(_file);
+ return fgets(s, size, _file);
}
-/** File destructor */
-File::~File ()
+
+int
+File::puts(char const* s)
+{
+ DCP_ASSERT(_file);
+ return fputs(s, _file);
+}
+
+
+File::operator bool() const
+{
+ return _file != nullptr;
+}
+
+
+void
+File::checked_write(void const * ptr, size_t size)
+{
+ size_t N = write(ptr, 1, size);
+ if (N != size) {
+ if (ferror(_file)) {
+ throw FileError("fwrite error", _path, errno);
+ } else {
+ throw FileError("Unexpected short write", _path, 0);
+ }
+ }
+}
+
+
+void
+File::checked_read(void* ptr, size_t size)
+{
+ size_t N = read(ptr, 1, size);
+ if (N != size) {
+ if (ferror(_file)) {
+ throw FileError("fread error %1", _path, errno);
+ } else {
+ throw FileError("Unexpected short read", _path, 0);
+ }
+ }
+}
+
+
+FILE*
+File::take()
+{
+ auto give = _file;
+ _file = nullptr;
+ return give;
+}
+
+
+int
+File::seek(int64_t offset, int whence)
+{
+ DCP_ASSERT(_file);
+#ifdef LIBDCP_WINDOWS
+ return _fseeki64(_file, offset, whence);
+#else
+ return fseek(_file, offset, whence);
+#endif
+}
+
+
+int64_t
+File::tell()
+{
+ DCP_ASSERT(_file);
+#ifdef LIBDCP_WINDOWS
+ return _ftelli64(_file);
+#else
+ return ftell(_file);
+#endif
+}
+
+
+
+int
+File::error ()
{
- delete[] _data;
+ DCP_ASSERT(_file);
+ return ferror(_file);
}
projects / libdcp.git / blobdiff