about summary refs log tree commit diff
path: root/iconvdata/tst-table-from.c
blob: bd2647eae02e5a330f6d041d6a272c00521f890d (plain) (blame)
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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
/* Copyright (C) 2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Bruno Haible <haible@clisp.cons.org>, 2000.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The GNU C Library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

/* Create a table from CHARSET to Unicode.
   This is a good test for CHARSET's iconv() module, in particular the
   FROM_LOOP BODY macro.  */

#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <iconv.h>
#include <errno.h>

/* Converts a byte buffer to a hexadecimal string.  */
static const char*
hexbuf (unsigned char buf[], unsigned int buflen)
{
  static char msg[50];

  switch (buflen)
    {
    case 1:
      sprintf (msg, "0x%02X", buf[0]);
      break;
    case 2:
      sprintf (msg, "0x%02X%02X", buf[0], buf[1]);
      break;
    case 3:
      sprintf (msg, "0x%02X%02X%02X", buf[0], buf[1], buf[2]);
      break;
    case 4:
      sprintf (msg, "0x%02X%02X%02X%02X", buf[0], buf[1], buf[2], buf[3]);
      break;
    default:
      abort ();
    }
  return msg;
}

/* Attempts to convert a byte buffer BUF (BUFLEN bytes) to OUT (6 bytes)
   using the conversion descriptor CD.  Returns the number of written bytes,
   or 0 if ambiguous, or -1 if invalid.  */
static int
try (iconv_t cd, unsigned char buf[], unsigned int buflen, unsigned char *out)
{
  const char *inbuf = (const char *) buf;
  size_t inbytesleft = buflen;
  char *outbuf = (char *) out;
  size_t outbytesleft = 6;
  size_t result = iconv (cd,
			 (char *) &inbuf, &inbytesleft,
			 &outbuf, &outbytesleft);
  if (result == (size_t)(-1))
    {
      if (errno == EILSEQ)
	{
	  return -1;
	}
      else if (errno == EINVAL)
	{
	  return 0;
	}
      else
	{
	  int saved_errno = errno;
	  fprintf (stderr, "%s: iconv error: ", hexbuf (buf, buflen));
	  errno = saved_errno;
	  perror ("");
	  exit (1);
	}
    }
  else
    {
      if (inbytesleft != 0)
	{
	  fprintf (stderr, "%s: inbytes = %ld, outbytes = %ld\n",
		   hexbuf (buf, buflen),
		   (long) (buflen - inbytesleft),
		   (long) (6 - outbytesleft));
	  exit (1);
	}
      return 6 - outbytesleft;
    }
}

/* Returns the out[] buffer as a Unicode value.  */
static unsigned int
utf8_decode (const unsigned char *out, unsigned int outlen)
{
  return (outlen==1 ? out[0] :
	  outlen==2 ? ((out[0] & 0x1f) << 6) + (out[1] & 0x3f) :
	  outlen==3 ? ((out[0] & 0x0f) << 12) + ((out[1] & 0x3f) << 6) + (out[2] & 0x3f) :
	  outlen==4 ? ((out[0] & 0x07) << 18) + ((out[1] & 0x3f) << 12) + ((out[2] & 0x3f) << 6) + (out[3] & 0x3f) :
	  outlen==5 ? ((out[0] & 0x03) << 24) + ((out[1] & 0x3f) << 18) + ((out[2] & 0x3f) << 12) + ((out[3] & 0x3f) << 6) + (out[4] & 0x3f) :
	  outlen==6 ? ((out[0] & 0x01) << 30) + ((out[1] & 0x3f) << 24) + ((out[2] & 0x3f) << 18) + ((out[3] & 0x3f) << 12) + ((out[4] & 0x3f) << 6) + (out[5] & 0x3f) :
	  0xfffd);
}

int
main (int argc, char *argv[])
{
  const char *charset;
  iconv_t cd;

  if (argc != 2)
    {
      fprintf (stderr, "Usage: tst-table-to charset\n");
      exit (1);
    }
  charset = argv[1];

  cd = iconv_open ("UTF-8", charset);
  if (cd == (iconv_t)(-1))
    {
      perror ("iconv_open");
      exit (1);
    }

  {
    unsigned char out[6];
    unsigned char buf[4];
    unsigned int i0, i1, i2, i3;
    int result;

    for (i0 = 0; i0 < 0x100; i0++)
      {
	buf[0] = i0;
	result = try (cd, buf, 1, out);
	if (result < 0)
	  {
	  }
	else if (result > 0)
	  {
	    printf ("0x%02X\t0x%04X\n",
		    i0, utf8_decode (out, result));
	  }
	else
	  {
	    for (i1 = 0; i1 < 0x100; i1++)
	      {
		buf[1] = i1;
		result = try (cd, buf, 2, out);
		if (result < 0)
		  {
		  }
		else if (result > 0)
		  {
		    printf ("0x%02X%02X\t0x%04X\n",
			    i0, i1, utf8_decode (out, result));
		  }
		else
		  {
		    for (i2 = 0; i2 < 0x100; i2++)
		      {
			buf[2] = i2;
			result = try (cd, buf, 3, out);
			if (result < 0)
			  {
			  }
			else if (result > 0)
			  {
			    printf ("0x%02X%02X%02X\t0x%04X\n",
				    i0, i1, i2, utf8_decode (out, result));
			  }
			else if (strcmp (charset, "UTF-8"))
			  {
			    for (i3 = 0; i3 < 0x100; i3++)
			      {
				buf[3] = i3;
				result = try (cd, buf, 4, out);
				if (result < 0)
				  {
				  }
				else if (result > 0)
				  {
				    printf ("0x%02X%02X%02X%02X\t0x%04X\n",
					    i0, i1, i2, i3,
					    utf8_decode (out, result));
				  }
				else
				  {
				    fprintf (stderr,
					     "%s: incomplete byte sequence\n",
					     hexbuf (buf, 4));
				    exit (1);
				  }
			      }
			  }
		      }
		  }
	      }
	  }
      }
  }

  if (iconv_close (cd) < 0)
    {
      perror ("iconv_close");
      exit (1);
    }

  if (ferror (stdin) || ferror (stdout))
    {
      fprintf (stderr, "I/O error\n");
      exit (1);
    }

  exit (0);
}