forked from KolibriOS/kolibrios
ffmpeg-2.8.5
git-svn-id: svn://kolibrios.org@6147 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
180
contrib/sdk/sources/ffmpeg/ffmpeg-2.8/tools/ffescape.c
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180
contrib/sdk/sources/ffmpeg/ffmpeg-2.8/tools/ffescape.c
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/*
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* Copyright (c) 2012 Stefano Sabatini
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*
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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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#include "config.h"
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#if HAVE_UNISTD_H
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#include <unistd.h> /* getopt */
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#endif
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#include "libavutil/log.h"
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#include "libavutil/bprint.h"
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#if !HAVE_GETOPT
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#include "compat/getopt.c"
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#endif
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/**
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* @file
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* escaping utility
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*/
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static void usage(void)
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{
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printf("Escape an input string, adopting the av_get_token() escaping logic\n");
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printf("usage: ffescape [OPTIONS]\n");
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printf("\n"
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"Options:\n"
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"-e echo each input line on output\n"
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"-f flag select an escape flag, can assume the values 'whitespace' and 'strict'\n"
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"-h print this help\n"
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"-i INFILE set INFILE as input file, stdin if omitted\n"
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"-l LEVEL set the number of escaping levels, 1 if omitted\n"
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"-m ESCAPE_MODE select escape mode between 'auto', 'backslash', 'quote'\n"
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"-o OUTFILE set OUTFILE as output file, stdout if omitted\n"
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"-p PROMPT set output prompt, is '=> ' by default\n"
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"-s SPECIAL_CHARS set the list of special characters\n");
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}
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int main(int argc, char **argv)
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{
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AVBPrint src;
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char *src_buf, *dst_buf;
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const char *outfilename = NULL, *infilename = NULL;
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FILE *outfile = NULL, *infile = NULL;
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const char *prompt = "=> ";
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enum AVEscapeMode escape_mode = AV_ESCAPE_MODE_AUTO;
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int escape_flags = 0;
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int level = 1;
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int echo = 0;
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char *special_chars = NULL;
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int c;
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while ((c = getopt(argc, argv, "ef:hi:l:o:m:p:s:")) != -1) {
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switch (c) {
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case 'e':
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echo = 1;
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break;
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case 'h':
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usage();
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return 0;
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case 'i':
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infilename = optarg;
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break;
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case 'f':
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if (!strcmp(optarg, "whitespace")) escape_flags |= AV_ESCAPE_FLAG_WHITESPACE;
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else if (!strcmp(optarg, "strict")) escape_flags |= AV_ESCAPE_FLAG_STRICT;
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else {
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av_log(NULL, AV_LOG_ERROR,
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"Invalid value '%s' for option -f, "
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"valid arguments are 'whitespace', and 'strict'\n", optarg);
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return 1;
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}
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break;
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case 'l':
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{
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char *tail;
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long int li = strtol(optarg, &tail, 10);
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if (*tail || li > INT_MAX || li < 0) {
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av_log(NULL, AV_LOG_ERROR,
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"Invalid value '%s' for option -l, argument must be a non negative integer\n",
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optarg);
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return 1;
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}
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level = li;
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break;
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}
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case 'm':
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if (!strcmp(optarg, "auto")) escape_mode = AV_ESCAPE_MODE_AUTO;
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else if (!strcmp(optarg, "backslash")) escape_mode = AV_ESCAPE_MODE_BACKSLASH;
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else if (!strcmp(optarg, "quote")) escape_mode = AV_ESCAPE_MODE_QUOTE;
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else {
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av_log(NULL, AV_LOG_ERROR,
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"Invalid value '%s' for option -m, "
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"valid arguments are 'backslash', and 'quote'\n", optarg);
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return 1;
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}
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break;
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case 'o':
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outfilename = optarg;
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break;
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case 'p':
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prompt = optarg;
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break;
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case 's':
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special_chars = optarg;
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break;
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case '?':
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return 1;
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}
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}
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if (!infilename || !strcmp(infilename, "-")) {
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infilename = "stdin";
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infile = stdin;
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} else {
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infile = fopen(infilename, "r");
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}
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if (!infile) {
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av_log(NULL, AV_LOG_ERROR, "Impossible to open input file '%s': %s\n", infilename, strerror(errno));
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return 1;
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}
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if (!outfilename || !strcmp(outfilename, "-")) {
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outfilename = "stdout";
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outfile = stdout;
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} else {
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outfile = fopen(outfilename, "w");
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}
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if (!outfile) {
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av_log(NULL, AV_LOG_ERROR, "Impossible to open output file '%s': %s\n", outfilename, strerror(errno));
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return 1;
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}
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/* grab the input and store it in src */
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av_bprint_init(&src, 1, AV_BPRINT_SIZE_UNLIMITED);
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while ((c = fgetc(infile)) != EOF)
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av_bprint_chars(&src, c, 1);
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av_bprint_chars(&src, 0, 1);
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if (!av_bprint_is_complete(&src)) {
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av_log(NULL, AV_LOG_ERROR, "Could not allocate a buffer for the source string\n");
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av_bprint_finalize(&src, NULL);
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return 1;
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}
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av_bprint_finalize(&src, &src_buf);
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if (echo)
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fprintf(outfile, "%s", src_buf);
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/* escape */
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dst_buf = src_buf;
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while (level--) {
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if (av_escape(&dst_buf, src_buf, special_chars, escape_mode, escape_flags) < 0) {
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av_log(NULL, AV_LOG_ERROR, "Could not escape string\n");
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return 1;
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}
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av_free(src_buf);
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src_buf = dst_buf;
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}
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fprintf(outfile, "%s%s", prompt, dst_buf);
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av_free(dst_buf);
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return 0;
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}
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