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utf8.c
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1 /*
2  * Copyright (c) 2013 Stefano Sabatini
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifdef TEST
22 #include <stdio.h>
23 
24 #include "libavutil/avstring.h"
25 #include "libavutil/file.h"
26 
27 static void print_sequence(const char *p, int l, int indent)
28 {
29  int i;
30  for (i = 0; i < l; i++)
31  printf("%02X", (uint8_t)p[i]);
32  printf("%*s", indent-l*2, "");
33 }
34 
35 int main(int argc, char **argv)
36 {
37  int ret;
38  char *filename = argv[1];
39  uint8_t *file_buf;
40  size_t file_buf_size;
41  uint32_t code;
42  const uint8_t *p, *endp;
43 
44  ret = av_file_map(filename, &file_buf, &file_buf_size, 0, NULL);
45  if (ret < 0)
46  return 1;
47 
48  p = file_buf;
49  endp = file_buf + file_buf_size;
50  while (p < endp) {
51  int l, r;
52  const uint8_t *p0 = p;
53  code = UINT32_MAX;
54  r = av_utf8_decode(&code, &p, endp, 0);
55  l = (int)(p-p0);
56  print_sequence(p0, l, 20);
57  if (code != UINT32_MAX) {
58  printf("%-10d 0x%-10X %-5d ", code, code, l);
59  if (r >= 0) {
60  if (*p0 == '\n') printf("\\n\n");
61  else printf ("%.*s\n", l, p0);
62  } else {
63  printf("invalid code range\n");
64  }
65  } else {
66  printf("invalid sequence\n");
67  }
68  }
69 
70  av_file_unmap(file_buf, file_buf_size);
71  return 0;
72 }
73 #endif
#define NULL
Definition: coverity.c:32
uint8_t
Misc file utilities.
void av_file_unmap(uint8_t *bufptr, size_t size)
Unmap or free the buffer bufptr created by av_file_map().
Definition: file.c:129
int av_file_map(const char *filename, uint8_t **bufptr, size_t *size, int log_offset, void *log_ctx)
Read the file with name filename, and put its content in a newly allocated buffer or map it with mmap...
Definition: file.c:49
int av_utf8_decode(int32_t *codep, const uint8_t **bufp, const uint8_t *buf_end, unsigned int flags)
Read and decode a single UTF-8 code point (character) from the buffer in *buf, and update *buf to poi...
Definition: avstring.c:360
const char * r
Definition: vf_curves.c:107
ret
Definition: avfilter.c:974
int main(int argc, char **argv)
Definition: main.c:22