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57 lines
1016 B
C++
57 lines
1016 B
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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#include "io/FileOutputStream.hxx"
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#include "fs/NarrowPath.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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std::byte 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(std::span{buffer}.first(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 FromNarrowPath path = 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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