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acde43703f
This stringtable is a concatenation of strings, with their own trailing \0. Without an explicit size said stringtable ends with two \0 (one from the last string and one more because it is initialized via a string literal); the explicit size exists to discard the last \0. Yet this makes GCC (but not Clang) think that this is an unterminated string, leading to warnings when -Wunterminated-string-initialization is enabled. So just remove the explicit size to avoid this. (An alternative would be to mark this as a non-string for GCC, but not for Clang, but this has been deemed ugly; another alternative would be to omit the internal \0 from the stringtable and use length fields instead, but the necessary copying code more than outweighs the size benefits of omitting the \0.) Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
151 lines
8.3 KiB
C
151 lines
8.3 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#undef _GNU_SOURCE
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#define _XOPEN_SOURCE 600 /* XSI-compliant version of strerror_r */
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#include <stdio.h>
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#include <string.h>
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#include "config.h"
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#include "avstring.h"
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#include "error.h"
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#include "macros.h"
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#define AVERROR_INPUT_AND_OUTPUT_CHANGED (AVERROR_INPUT_CHANGED | AVERROR_OUTPUT_CHANGED)
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#define AVERROR_LIST(E, E2) \
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E(BSF_NOT_FOUND, "Bitstream filter not found") \
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E(BUG, "Internal bug, should not have happened") \
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E2(BUG2, BUG, "Internal bug, should not have happened") \
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E(BUFFER_TOO_SMALL, "Buffer too small") \
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E(DECODER_NOT_FOUND, "Decoder not found") \
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E(DEMUXER_NOT_FOUND, "Demuxer not found") \
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E(ENCODER_NOT_FOUND, "Encoder not found") \
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E(EOF, "End of file") \
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E(EXIT, "Immediate exit requested") \
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E(EXTERNAL, "Generic error in an external library") \
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E(FILTER_NOT_FOUND, "Filter not found") \
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E(INPUT_CHANGED, "Input changed") \
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E(INVALIDDATA, "Invalid data found when processing input") \
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E(MUXER_NOT_FOUND, "Muxer not found") \
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E(OPTION_NOT_FOUND, "Option not found") \
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E(OUTPUT_CHANGED, "Output changed") \
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E(PATCHWELCOME, "Not yet implemented in FFmpeg, patches welcome") \
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E(PROTOCOL_NOT_FOUND, "Protocol not found") \
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E(STREAM_NOT_FOUND, "Stream not found") \
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E(UNKNOWN, "Unknown error occurred") \
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E(EXPERIMENTAL, "Experimental feature") \
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E(INPUT_AND_OUTPUT_CHANGED, "Input and output changed") \
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E(HTTP_BAD_REQUEST, "Server returned 400 Bad Request") \
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E(HTTP_UNAUTHORIZED, "Server returned 401 Unauthorized (authorization failed)") \
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E(HTTP_FORBIDDEN, "Server returned 403 Forbidden (access denied)") \
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E(HTTP_NOT_FOUND, "Server returned 404 Not Found") \
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E(HTTP_TOO_MANY_REQUESTS, "Server returned 429 Too Many Requests") \
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E(HTTP_OTHER_4XX, "Server returned 4XX Client Error, but not one of 40{0,1,3,4}") \
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E(HTTP_SERVER_ERROR, "Server returned 5XX Server Error reply") \
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#define STRERROR_LIST(E) \
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E(E2BIG, "Argument list too long") \
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E(EACCES, "Permission denied") \
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E(EAGAIN, "Resource temporarily unavailable") \
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E(EBADF, "Bad file descriptor") \
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E(EBUSY, "Device or resource busy") \
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E(ECHILD, "No child processes") \
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E(EDEADLK, "Resource deadlock avoided") \
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E(EDOM, "Numerical argument out of domain") \
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E(EEXIST, "File exists") \
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E(EFAULT, "Bad address") \
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E(EFBIG, "File too large") \
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E(EILSEQ, "Illegal byte sequence") \
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E(EINTR, "Interrupted system call") \
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E(EINVAL, "Invalid argument") \
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E(EIO, "I/O error") \
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E(EISDIR, "Is a directory") \
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E(EMFILE, "Too many open files") \
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E(EMLINK, "Too many links") \
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E(ENAMETOOLONG, "File name too long") \
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E(ENFILE, "Too many open files in system") \
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E(ENODEV, "No such device") \
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E(ENOENT, "No such file or directory") \
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E(ENOEXEC, "Exec format error") \
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E(ENOLCK, "No locks available") \
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E(ENOMEM, "Cannot allocate memory") \
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E(ENOSPC, "No space left on device") \
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E(ENOSYS, "Function not implemented") \
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E(ENOTDIR, "Not a directory") \
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E(ENOTEMPTY, "Directory not empty") \
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E(ENOTTY, "Inappropriate I/O control operation") \
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E(ENXIO, "No such device or address") \
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E(EPERM, "Operation not permitted") \
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E(EPIPE, "Broken pipe") \
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E(ERANGE, "Result too large") \
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E(EROFS, "Read-only file system") \
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E(ESPIPE, "Illegal seek") \
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E(ESRCH, "No such process") \
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E(EXDEV, "Cross-device link") \
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enum {
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#define OFFSET(CODE, DESC) \
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ERROR_ ## CODE ## _OFFSET, \
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ERROR_ ## CODE ## _END_OFFSET = ERROR_ ## CODE ## _OFFSET + sizeof(DESC) - 1,
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#define NOTHING(CODE, CODE2, DESC)
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AVERROR_LIST(OFFSET, NOTHING)
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#if !HAVE_STRERROR_R
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STRERROR_LIST(OFFSET)
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#endif
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};
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#define STRING(CODE, DESC) DESC "\0"
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static const char error_stringtable[] =
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AVERROR_LIST(STRING, NOTHING)
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#if !HAVE_STRERROR_R
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STRERROR_LIST(STRING)
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#endif
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;
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static const struct ErrorEntry {
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int num;
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unsigned offset;
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} error_entries[] = {
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#define ENTRY(CODE, DESC) { .num = AVERROR_ ## CODE, .offset = ERROR_ ## CODE ## _OFFSET },
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#define ENTRY2(CODE, CODE2, DESC) { .num = AVERROR_ ## CODE, .offset = ERROR_ ## CODE2 ## _OFFSET },
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AVERROR_LIST(ENTRY, ENTRY2)
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#if !HAVE_STRERROR_R
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#undef ENTRY
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#define ENTRY(CODE, DESC) { .num = AVERROR(CODE), .offset = ERROR_ ## CODE ## _OFFSET },
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STRERROR_LIST(ENTRY)
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#endif
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};
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int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
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{
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for (size_t i = 0; i < FF_ARRAY_ELEMS(error_entries); ++i) {
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if (errnum == error_entries[i].num) {
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av_strlcpy(errbuf, error_stringtable + error_entries[i].offset, errbuf_size);
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return 0;
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}
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}
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#if HAVE_STRERROR_R
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int ret = AVERROR(strerror_r(AVUNERROR(errnum), errbuf, errbuf_size));
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#else
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int ret = -1;
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#endif
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if (ret < 0)
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snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum);
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return ret;
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}
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