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glibc/iconvdata/tst-e2big.c
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/* Test for a tricky E2BIG situation. | |
Copyright (C) 2002-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Bruno Haible <bruno@clisp.org>, 2002. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 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 | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <alloca.h> | |
#include <errno.h> | |
#include <iconv.h> | |
#include <stdbool.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
/* In EUC-JISX0213 and TSCII, a single input character can convert to | |
a sequence of two or more Unicode characters. When the output buffer | |
has room for less Unicode characters than would be produced with an | |
unconstrained output buffer, the conversion must give errno = E2BIG. */ | |
void | |
test (const char *encoding, char *inbuf, size_t inbufsize, size_t outbufsize) | |
{ | |
char *outbuf = alloca (outbufsize); | |
iconv_t cd; | |
char *inptr; | |
size_t inlen; | |
char *outptr; | |
size_t outlen; | |
int result; | |
bool empty_input; | |
bool empty_output; | |
cd = iconv_open ("UTF-8", encoding); | |
if (cd == (iconv_t) -1) | |
{ | |
fprintf (stderr, "cannot convert from %s\n", encoding); | |
exit (1); | |
} | |
inptr = inbuf; | |
inlen = inbufsize; | |
outptr = outbuf; | |
outlen = outbufsize; | |
result = iconv (cd, &inptr, &inlen, &outptr, &outlen); | |
if (!(result == -1 && errno == E2BIG)) | |
{ | |
fprintf (stderr, "%s: wrong iconv result: %d/%d (%m)\n", | |
encoding, result, errno); | |
exit (1); | |
} | |
empty_input = (inptr == inbuf && inlen == inbufsize); | |
empty_output = (outptr == outbuf && outlen == outbufsize); | |
if (!empty_input && empty_output) | |
{ | |
fprintf (stderr, "%s: ate %td input bytes\n", encoding, inptr - inbuf); | |
exit (1); | |
} | |
if (empty_input && !empty_output) | |
{ | |
fprintf (stderr, "%s: produced %td output bytes\n", | |
encoding, outptr - outbuf); | |
exit (1); | |
} | |
iconv_close (cd); | |
} | |
void | |
test_euc_jisx0213 (void) | |
{ | |
char inbuf[2] = { 0xa4, 0xf7 }; | |
test ("EUC-JISX0213", inbuf, sizeof (inbuf), 3); | |
} | |
void | |
test_tscii (void) | |
{ | |
char inbuf[1] = { 0x82 }; | |
test ("TSCII", inbuf, sizeof (inbuf), 3); | |
test ("TSCII", inbuf, sizeof (inbuf), 6); | |
test ("TSCII", inbuf, sizeof (inbuf), 9); | |
} | |
static int | |
do_test (void) | |
{ | |
test_euc_jisx0213 (); | |
test_tscii (); | |
return 0; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |