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/* bug 19432: iconv rejects redundant escape sequences in IBM903,
IBM905, IBM907, and IBM909
Copyright (C) 2016-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://www.gnu.org/licenses/>. */
#include <iconv.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
// The longest test input sequence.
#define MAXINBYTES 8
#define MAXOUTBYTES (MAXINBYTES * MB_LEN_MAX)
/* Verify that a conversion of the INPUT sequence consisting of
INBYTESLEFT bytes in the encoding specified by the codeset
named by FROM_SET is successful.
Return 0 on success, non-zero on iconv() failure. */
static int
test_ibm93x (const char *from_set, const char *input, size_t inbytesleft)
{
const char to_set[] = "UTF-8";
iconv_t cd = iconv_open (to_set, from_set);
if (cd == (iconv_t) -1)
{
printf ("iconv_open(\"%s\", \"%s\"): %s\n",
from_set, to_set, strerror (errno));
return 1;
}
char output [MAXOUTBYTES];
size_t outbytesleft = sizeof output;
char *inbuf = (char*)input;
char *outbuf = output;
printf ("iconv(cd, %p, %zu, %p, %zu)\n",
inbuf, inbytesleft, outbuf, outbytesleft);
errno = 0;
size_t ret = iconv (cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft);
printf (" ==> %zu: %s\n"
" inbuf%+td, inbytesleft=%zu, outbuf%+td, outbytesleft=%zu\n",
ret, strerror (errno),
inbuf - input, inbytesleft, outbuf - output, outbytesleft);
// Return 0 on success, non-zero on iconv() failure.
return ret == (size_t)-1 || errno;
}
static int
do_test (void)
{
// State-dependent encodings to exercise.
static const char* const to_code[] = {
"IBM930", "IBM933", "IBM935", "IBM937", "IBM939"
};
static const size_t ncodesets = sizeof to_code / sizeof *to_code;
static const struct {
char txt[MAXINBYTES];
size_t len;
} input[] = {
#define DATA(s) { s, sizeof s - 1 }
/* <SI>: denotes the shift-in 1-byte escape sequence, changing
the encoder from a sigle-byte encoding to multibyte
<SO>: denotes the shift-out 1-byte escape sequence, switching
the encoder from a multibyte to a single-byte state */
DATA ("\x0e"), // <SI> (not redundant)
DATA ("\x0f"), // <S0> (redundant with initial state)
DATA ("\x0e\x0e"), // <SI><SI>
DATA ("\x0e\x0f\x0f"), // <SI><SO><SO>
DATA ("\x0f\x0f"), // <SO><SO>
DATA ("\x0f\x0e\x0e"), // <SO><SI><SI>
DATA ("\x0e\x0f\xc7\x0f"), // <SI><SO><G><SO>
DATA ("\xc7\x0f") // <G><SO> (redundant with initial state)
};
static const size_t ninputs = sizeof input / sizeof *input;
int ret = 0;
size_t i, j;
/* Iterate over the IBM93x codesets above and exercise each with
the input sequences above. */
for (i = 0; i != ncodesets; ++i)
for (j = 0; j != ninputs; ++j)
ret += test_ibm93x (to_code [i], input [i].txt, input [i].len);
return ret;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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