1/* Copyright (C) 2000-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18/* Create a table from Unicode to CHARSET.
19 This is a good test for CHARSET's iconv() module, in particular the
20 TO_LOOP BODY macro. */
21
22#include <stddef.h>
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <iconv.h>
27#include <errno.h>
28
29int
30main (int argc, char *argv[])
31{
32 const char *charset;
33 iconv_t cd;
34 int bmp_only;
35
36 if (argc != 2)
37 {
38 fprintf (stderr, format: "Usage: tst-table-to charset\n");
39 return 1;
40 }
41 charset = argv[1];
42
43 cd = iconv_open (tocode: charset, fromcode: "UTF-8");
44 if (cd == (iconv_t)(-1))
45 {
46 perror (s: "iconv_open");
47 return 1;
48 }
49
50 /* When testing UTF-8 or GB18030, stop at 0x10000, otherwise the output
51 file gets too big. */
52 bmp_only = (strcmp (s1: charset, s2: "UTF-8") == 0
53 || strcmp (s1: charset, s2: "GB18030") == 0);
54
55 {
56 unsigned int i;
57 unsigned char buf[10];
58
59 for (i = 0; i < (bmp_only ? 0x10000 : 0x30000); i++)
60 {
61 unsigned char in[6];
62 unsigned int incount =
63 (i < 0x80 ? (in[0] = i, 1)
64 : i < 0x800 ? (in[0] = 0xc0 | (i >> 6),
65 in[1] = 0x80 | (i & 0x3f), 2)
66 : i < 0x10000 ? (in[0] = 0xe0 | (i >> 12),
67 in[1] = 0x80 | ((i >> 6) & 0x3f),
68 in[2] = 0x80 | (i & 0x3f), 3)
69 : /* i < 0x200000 */ (in[0] = 0xf0 | (i >> 18),
70 in[1] = 0x80 | ((i >> 12) & 0x3f),
71 in[2] = 0x80 | ((i >> 6) & 0x3f),
72 in[3] = 0x80 | (i & 0x3f), 4));
73 const char *inbuf = (const char *) in;
74 size_t inbytesleft = incount;
75 char *outbuf = (char *) buf;
76 size_t outbytesleft = sizeof (buf);
77 size_t result;
78 size_t result2 = 0;
79
80 iconv (cd: cd, NULL, NULL, NULL, NULL);
81 result = iconv (cd: cd,
82 inbuf: (char **) &inbuf, inbytesleft: &inbytesleft,
83 outbuf: &outbuf, outbytesleft: &outbytesleft);
84 if (result != (size_t)(-1))
85 result2 = iconv (cd: cd, NULL, NULL, outbuf: &outbuf, outbytesleft: &outbytesleft);
86
87 if (result == (size_t)(-1) || result2 == (size_t)(-1))
88 {
89 if (errno != EILSEQ)
90 {
91 int saved_errno = errno;
92 fprintf (stderr, format: "0x%02X: iconv error: ", i);
93 errno = saved_errno;
94 perror (s: "");
95 return 1;
96 }
97 }
98 else if (result == 0) /* ignore conversions with transliteration */
99 {
100 unsigned int j, jmax;
101 if (inbytesleft != 0 || outbytesleft == sizeof (buf))
102 {
103 fprintf (stderr, format: "0x%02X: inbytes = %ld, outbytes = %ld\n", i,
104 (long) (incount - inbytesleft),
105 (long) (sizeof (buf) - outbytesleft));
106 return 1;
107 }
108 jmax = sizeof (buf) - outbytesleft;
109 printf (format: "0x");
110 for (j = 0; j < jmax; j++)
111 printf (format: "%02X", buf[j]);
112 printf (format: "\t0x%04X\n", i);
113 }
114 }
115 }
116
117 if (iconv_close (cd: cd) < 0)
118 {
119 perror (s: "iconv_close");
120 return 1;
121 }
122
123 if (ferror (stdin) || fflush (stdout) || ferror (stdout))
124 {
125 fprintf (stderr, format: "I/O error\n");
126 return 1;
127 }
128
129 return 0;
130}
131

source code of glibc/iconvdata/tst-table-to.c