NetBSD/usr.bin/iconv/iconv.c

204 lines
5.0 KiB
C

/* $NetBSD: iconv.c,v 1.3 2003/07/23 13:18:59 wiz Exp $ */
/*-
* Copyright (c)2003 Citrus Project,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: iconv.c,v 1.3 2003/07/23 13:18:59 wiz Exp $");
#endif /* LIBC_SCCS and not lint */
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iconv.h>
#include <unistd.h>
#include <err.h>
static void
usage(void)
{
fprintf(stderr,
"usage:\n"
"\t%s [-cs] -f <from> -t <to> [file ...]\n"
"\t%s -l\n",
getprogname(), getprogname());
exit(1);
}
static void
show_codesets(void)
{
char **list;
size_t sz, i;
if (__iconv_get_list(&list, &sz))
err(EXIT_FAILURE, "__iconv_get_list()");
for (i=0; i<sz; i++) {
printf("%s\n", list[i]);
}
__iconv_free_list(list, sz);
}
#define INBUFSIZE 1024
#define OUTBUFSIZE (INBUFSIZE*2)
static void
do_conv(const char *fn, FILE *fp, const char *from, const char *to, int silent,
int hide_invalid)
{
char inbuf[INBUFSIZE], outbuf[OUTBUFSIZE], *out;
const char *in;
size_t inbytes, outbytes, ret, invalids;
iconv_t cd;
u_int32_t flags = 0;
if (hide_invalid)
flags |= __ICONV_F_HIDE_INVALID;
cd = iconv_open(to, from);
if (cd == (iconv_t)-1)
err(EXIT_FAILURE, "iconv_open(%s, %s)", to, from);
invalids = 0;
while ((inbytes = fread(inbuf, 1, INBUFSIZE, fp)) > 0) {
in = inbuf;
while (inbytes>0) {
out = outbuf;
outbytes = OUTBUFSIZE;
ret = __iconv(cd, &in, &inbytes, &out, &outbytes,
flags, &invalids);
if (ret==(size_t)-1 && errno != E2BIG) {
/*
* XXX: iconv(3) is bad interface.
* invalid character count is lost here.
* instead, we just provide __iconv function.
*/
if (errno != EINVAL || in == inbuf)
err(EXIT_FAILURE, "iconv()");
/* incomplete input character */
memmove(inbuf, in, inbytes);
ret = fread(inbuf+inbytes, 1,
INBUFSIZE-inbytes, fp);
if (ret == 0) {
if (feof(fp))
errx(EXIT_FAILURE,
"iconv(): %s",
strerror(EINVAL));
else
err(EXIT_FAILURE, "fread()");
}
in = inbuf;
inbytes += ret;
}
if (outbytes < OUTBUFSIZE)
fwrite(outbuf, 1, OUTBUFSIZE-outbytes, stdout);
}
}
/* reset the shift state of the output buffer */
outbytes = OUTBUFSIZE;
out = outbuf;
ret = iconv(cd, NULL, NULL, &out, &outbytes);
if (ret == -1)
err(EXIT_FAILURE, "iconv()");
if (outbytes < OUTBUFSIZE)
fwrite(outbuf, 1, OUTBUFSIZE-outbytes, stdout);
if (invalids > 0 && !silent)
warnx("warning: invalid characters: %lu",
(unsigned long)invalids);
iconv_close(cd);
}
int
main(int argc, char **argv)
{
int ch, i;
extern char *optarg;
extern int optind;
int opt_l = 0, opt_s = 0, opt_c = 0;
char *opt_f = NULL, *opt_t = NULL;
FILE *fp;
while ((ch=getopt(argc, argv, "cslf:t:")) != EOF) {
switch (ch) {
case 'c':
opt_c = 1;
break;
case 's':
opt_s = 1;
break;
case 'l':
/* list */
opt_l = 1;
break;
case 'f':
/* from */
opt_f = strdup(optarg);
break;
case 't':
/* to */
opt_t = strdup(optarg);
break;
default:
usage();
}
}
argc-=optind;
argv+=optind;
if (opt_l) {
if (argc>0 || opt_s || opt_f != NULL || opt_t != NULL) {
warnx("%s: -l should be specified solely.",
getprogname());
usage();
}
show_codesets();
} else {
if (opt_f == NULL || opt_t == NULL)
usage();
if (argc == 0)
do_conv("<stdin>", stdin, opt_f, opt_t, opt_s, opt_c);
else {
for (i=0; i<argc; i++) {
fp = fopen(argv[i], "r");
if (fp == NULL)
errx(EXIT_FAILURE, "%s: %s:%s",
getprogname(), argv[i],
strerror(errno));
do_conv(argv[i], fp, opt_f, opt_t, opt_s,
opt_c);
fclose(fp);
}
}
}
return EXIT_SUCCESS;
}