edc4989d9c
The former is deprecated by C++14. It's also functionally the same. From the standard: 19.4 The header<cerrno>is described in Table 43. Its contents are the same as the POSIX header<errno.h>,except that errno shall be defined as a macro. [Note: The intent is to remain in close alignment with the POSIX standard.] A separate errno value shall be provided for each thread. Signed-off-by: Rosen Penev <rosenp@gmail.com>
72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
/*
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* Copyright 2003-2020 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 "fs/io/FileOutputStream.hxx"
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#include "util/PrintException.hxx"
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#include <cerrno>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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static bool
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Copy(OutputStream &dest, int src)
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{
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while (true) {
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uint8_t buffer[8192];
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ssize_t nbytes = read(src, buffer, sizeof(buffer));
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if (nbytes < 0) {
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fprintf(stderr, "Failed to read from stdin: %s\n",
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strerror(errno));
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return false;
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}
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if (nbytes == 0)
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return true;
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dest.Write(buffer, nbytes);
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}
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}
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int
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main(int argc, char **argv)
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try {
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if (argc != 2) {
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fprintf(stderr, "Usage: WriteFile PATH\n");
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return EXIT_FAILURE;
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}
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const Path path = Path::FromFS(argv[1]);
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FileOutputStream fos(path);
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if (!Copy(fos, STDIN_FILENO))
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return EXIT_FAILURE;
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fos.Commit();
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return EXIT_SUCCESS;
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} catch (...) {
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PrintException(std::current_exception());
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return EXIT_FAILURE;
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}
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