mirror of
https://git.ffmpeg.org/ffmpeg.git
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72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/*
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* Copyright (c) 2013 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 <stdio.h>
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#include "libavutil/avstring.h"
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#include "libavutil/file.h"
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static void print_sequence(const char *p, int l, int indent)
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{
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int i;
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for (i = 0; i < l; i++)
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printf("%02X", (uint8_t)p[i]);
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printf("%*s", indent-l*2, "");
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}
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int main(int argc, char **argv)
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{
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int ret;
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char *filename = argv[1];
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uint8_t *file_buf;
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size_t file_buf_size;
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uint32_t code;
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const uint8_t *p, *endp;
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ret = av_file_map(filename, &file_buf, &file_buf_size, 0, NULL);
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if (ret < 0)
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return 1;
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p = file_buf;
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endp = file_buf + file_buf_size;
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while (p < endp) {
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int l, r;
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const uint8_t *p0 = p;
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code = UINT32_MAX;
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r = av_utf8_decode(&code, &p, endp, 0);
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l = (int)(p-p0);
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print_sequence(p0, l, 20);
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if (code != UINT32_MAX) {
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printf("%-10d 0x%-10X %-5d ", code, code, l);
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if (r >= 0) {
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if (*p0 == '\n') printf("\\n\n");
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else printf ("%.*s\n", l, p0);
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} else {
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printf("invalid code range\n");
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}
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} else {
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printf("invalid sequence\n");
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}
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}
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av_file_unmap(file_buf, file_buf_size);
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return 0;
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}
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