1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/* PSPP - a program for statistical analysis.
Copyright (C) 2011 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include "libpspp/encoding-guesser.h"
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libpspp/i18n.h"
#include "gl/error.h"
#include "gl/progname.h"
#include "gl/xalloc.h"
static void
usage (void)
{
printf ("usage: %s [OTHER_ENCODING] [BUFSIZE] < INPUT\n"
"where OTHER_ENCODING is the fallback encoding (default taken\n"
" from the current locale)\n"
" and BUFSIZE is the buffer size (default %d)\n",
program_name, ENCODING_GUESS_MIN);
exit (0);
}
int
main (int argc, char *argv[])
{
const char *encoding, *guess;
char *buffer;
int bufsize;
size_t n;
int i;
set_program_name (argv[0]);
i18n_init ();
encoding = NULL;
bufsize = 0;
for (i = 1; i < argc; i++)
{
const char *arg = argv[i];
if (!strcmp (arg, "--help"))
usage ();
else if (isdigit (arg[0]) && bufsize == 0)
{
bufsize = atoi (arg);
if (bufsize < ENCODING_GUESS_MIN)
error (1, 0, "buffer size %s is less than minimum size %d",
arg, ENCODING_GUESS_MIN);
}
else if (!isdigit (arg[0]) && encoding == NULL)
encoding = arg;
else
error (1, 0, "bad syntax; use `%s --help' for help", program_name);
}
if (bufsize == 0)
bufsize = ENCODING_GUESS_MIN;
buffer = xmalloc (bufsize);
n = fread (buffer, 1, bufsize, stdin);
guess = encoding_guess_head_encoding (encoding, buffer, n);
if (!strcmp (guess, "ASCII") && encoding_guess_encoding_is_auto (encoding))
while (n > 0)
{
size_t n_ascii = encoding_guess_count_ascii (buffer, n);
if (n == n_ascii)
n = fread (buffer, 1, bufsize, stdin);
else
{
memmove (buffer, buffer + n_ascii, n - n_ascii);
n -= n_ascii;
n += fread (buffer + n, 1, bufsize - n, stdin);
guess = encoding_guess_tail_encoding (encoding, buffer, n);
break;
}
}
puts (guess);
free (buffer);
return 0;
}
|
