1 | /* Test for a tricky E2BIG situation. |
2 | Copyright (C) 2002-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <alloca.h> |
20 | #include <errno.h> |
21 | #include <iconv.h> |
22 | #include <stdbool.h> |
23 | #include <stdio.h> |
24 | #include <stdlib.h> |
25 | |
26 | /* In EUC-JISX0213 and TSCII, a single input character can convert to |
27 | a sequence of two or more Unicode characters. When the output buffer |
28 | has room for less Unicode characters than would be produced with an |
29 | unconstrained output buffer, the conversion must give errno = E2BIG. */ |
30 | |
31 | void |
32 | test (const char *encoding, char *inbuf, size_t inbufsize, size_t outbufsize) |
33 | { |
34 | char *outbuf = alloca (outbufsize); |
35 | iconv_t cd; |
36 | char *inptr; |
37 | size_t inlen; |
38 | char *outptr; |
39 | size_t outlen; |
40 | int result; |
41 | bool empty_input; |
42 | bool empty_output; |
43 | |
44 | cd = iconv_open (tocode: "UTF-8" , fromcode: encoding); |
45 | if (cd == (iconv_t) -1) |
46 | { |
47 | fprintf (stderr, format: "cannot convert from %s\n" , encoding); |
48 | exit (status: 1); |
49 | } |
50 | |
51 | inptr = inbuf; |
52 | inlen = inbufsize; |
53 | outptr = outbuf; |
54 | outlen = outbufsize; |
55 | |
56 | result = iconv (cd: cd, inbuf: &inptr, inbytesleft: &inlen, outbuf: &outptr, outbytesleft: &outlen); |
57 | if (!(result == -1 && errno == E2BIG)) |
58 | { |
59 | fprintf (stderr, format: "%s: wrong iconv result: %d/%d (%m)\n" , |
60 | encoding, result, errno); |
61 | exit (status: 1); |
62 | } |
63 | empty_input = (inptr == inbuf && inlen == inbufsize); |
64 | empty_output = (outptr == outbuf && outlen == outbufsize); |
65 | |
66 | if (!empty_input && empty_output) |
67 | { |
68 | fprintf (stderr, format: "%s: ate %td input bytes\n" , encoding, inptr - inbuf); |
69 | exit (status: 1); |
70 | } |
71 | if (empty_input && !empty_output) |
72 | { |
73 | fprintf (stderr, format: "%s: produced %td output bytes\n" , |
74 | encoding, outptr - outbuf); |
75 | exit (status: 1); |
76 | } |
77 | |
78 | iconv_close (cd: cd); |
79 | } |
80 | |
81 | void |
82 | test_euc_jisx0213 (void) |
83 | { |
84 | char inbuf[2] = { 0xa4, 0xf7 }; |
85 | test (encoding: "EUC-JISX0213" , inbuf, inbufsize: sizeof (inbuf), outbufsize: 3); |
86 | } |
87 | |
88 | void |
89 | test_tscii (void) |
90 | { |
91 | char inbuf[1] = { 0x82 }; |
92 | test (encoding: "TSCII" , inbuf, inbufsize: sizeof (inbuf), outbufsize: 3); |
93 | test (encoding: "TSCII" , inbuf, inbufsize: sizeof (inbuf), outbufsize: 6); |
94 | test (encoding: "TSCII" , inbuf, inbufsize: sizeof (inbuf), outbufsize: 9); |
95 | } |
96 | |
97 | static int |
98 | do_test (void) |
99 | { |
100 | test_euc_jisx0213 (); |
101 | test_tscii (); |
102 | return 0; |
103 | } |
104 | |
105 | #define TEST_FUNCTION do_test () |
106 | #include "../test-skeleton.c" |
107 | |