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freebsd/lib/libc/iconv/iconv.c
Peter Wemm 19dfd82d81 Replace the #define for "iconv" so it is for the function name instead of
a macro with parameters.  Remove a __DECONST hack and add consts instead
for gnu libiconv API compatability.  This makes it work with things like
devel/boost-libs that expects to use "iconv" as though it were a pointer.
2013-07-03 07:03:19 +00:00

324 lines
7.4 KiB
C

/* $FreeBSD$ */
/* $NetBSD: iconv.c,v 1.11 2009/03/03 16:22:33 explorer Exp $ */
/*-
* Copyright (c) 2003 Citrus Project,
* Copyright (c) 2009, 2010 Gabor Kovesdan <gabor@FreeBSD.org>,
* 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>
#include <sys/queue.h>
#include <sys/types.h>
#include <assert.h>
#include <errno.h>
#include <iconv.h>
#include <limits.h>
#include <paths.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "citrus_types.h"
#include "citrus_module.h"
#include "citrus_esdb.h"
#include "citrus_hash.h"
#include "citrus_iconv.h"
__weak_reference(libiconv, iconv);
__weak_reference(libiconv_open, iconv_open);
__weak_reference(libiconv_open_into, iconv_open_into);
__weak_reference(libiconv_close, iconv_close);
__weak_reference(libiconvlist, iconvlist);
__weak_reference(libiconvctl, iconvctl);
__weak_reference(libiconv_set_relocation_prefix, iconv_set_relocation_prefix);
#define ISBADF(_h_) (!(_h_) || (_h_) == (iconv_t)-1)
int _libiconv_version = _LIBICONV_VERSION;
iconv_t _iconv_open(const char *out, const char *in,
struct _citrus_iconv *prealloc);
iconv_t
_iconv_open(const char *out, const char *in, struct _citrus_iconv *handle)
{
const char *out_slashes;
char *out_noslashes;
int ret;
/*
* Remove anything following a //, as these are options (like
* //ignore, //translate, etc) and we just don't handle them.
* This is for compatibility with software that uses these
* blindly.
*/
out_slashes = strstr(out, "//");
if (out_slashes != NULL) {
out_noslashes = strndup(out, out_slashes - out);
if (out_noslashes == NULL) {
errno = ENOMEM;
return ((iconv_t)-1);
}
ret = _citrus_iconv_open(&handle, in, out_noslashes);
free(out_noslashes);
} else {
ret = _citrus_iconv_open(&handle, in, out);
}
if (ret) {
errno = ret == ENOENT ? EINVAL : ret;
return ((iconv_t)-1);
}
handle->cv_shared->ci_discard_ilseq = strcasestr(out, "//IGNORE");
handle->cv_shared->ci_hooks = NULL;
return ((iconv_t)(void *)handle);
}
iconv_t
libiconv_open(const char *out, const char *in)
{
return (_iconv_open(out, in, NULL));
}
int
libiconv_open_into(const char *out, const char *in, iconv_allocation_t *ptr)
{
struct _citrus_iconv *handle;
handle = (struct _citrus_iconv *)ptr;
return ((_iconv_open(out, in, handle) == (iconv_t)-1) ? -1 : 0);
}
int
libiconv_close(iconv_t handle)
{
if (ISBADF(handle)) {
errno = EBADF;
return (-1);
}
_citrus_iconv_close((struct _citrus_iconv *)(void *)handle);
return (0);
}
size_t
libiconv(iconv_t handle, const char **in, size_t *szin, char **out, size_t *szout)
{
size_t ret;
int err;
if (ISBADF(handle)) {
errno = EBADF;
return ((size_t)-1);
}
err = _citrus_iconv_convert((struct _citrus_iconv *)(void *)handle,
in, szin, out, szout, 0, &ret);
if (err) {
errno = err;
ret = (size_t)-1;
}
return (ret);
}
size_t
__iconv(iconv_t handle, const char **in, size_t *szin, char **out,
size_t *szout, uint32_t flags, size_t *invalids)
{
size_t ret;
int err;
if (ISBADF(handle)) {
errno = EBADF;
return ((size_t)-1);
}
err = _citrus_iconv_convert((struct _citrus_iconv *)(void *)handle,
in, szin, out, szout, flags, &ret);
if (invalids)
*invalids = ret;
if (err) {
errno = err;
ret = (size_t)-1;
}
return (ret);
}
int
__iconv_get_list(char ***rlist, size_t *rsz, bool sorted)
{
int ret;
ret = _citrus_esdb_get_list(rlist, rsz, sorted);
if (ret) {
errno = ret;
return (-1);
}
return (0);
}
void
__iconv_free_list(char **list, size_t sz)
{
_citrus_esdb_free_list(list, sz);
}
/*
* GNU-compatibile non-standard interfaces.
*/
static int
qsort_helper(const void *first, const void *second)
{
const char * const *s1;
const char * const *s2;
s1 = first;
s2 = second;
return (strcmp(*s1, *s2));
}
void
libiconvlist(int (*do_one) (unsigned int, const char * const *,
void *), void *data)
{
char **list, **names;
const char * const *np;
char *curitem, *curkey, *slashpos;
size_t sz;
unsigned int i, j;
i = 0;
if (__iconv_get_list(&list, &sz, true))
list = NULL;
qsort((void *)list, sz, sizeof(char *), qsort_helper);
while (i < sz) {
j = 0;
slashpos = strchr(list[i], '/');
curkey = (char *)malloc(slashpos - list[i] + 2);
names = (char **)malloc(sz * sizeof(char *));
if ((curkey == NULL) || (names == NULL)) {
__iconv_free_list(list, sz);
return;
}
strlcpy(curkey, list[i], slashpos - list[i] + 1);
names[j++] = strdup(curkey);
for (; (i < sz) && (memcmp(curkey, list[i], strlen(curkey)) == 0); i++) {
slashpos = strchr(list[i], '/');
curitem = (char *)malloc(strlen(slashpos) + 1);
if (curitem == NULL) {
__iconv_free_list(list, sz);
return;
}
strlcpy(curitem, &slashpos[1], strlen(slashpos) + 1);
if (strcmp(curkey, curitem) == 0) {
continue;
}
names[j++] = strdup(curitem);
}
np = (const char * const *)names;
do_one(j, np, data);
free(names);
}
__iconv_free_list(list, sz);
}
__inline const char
*iconv_canonicalize(const char *name)
{
return (_citrus_iconv_canonicalize(name));
}
int
libiconvctl(iconv_t cd, int request, void *argument)
{
struct _citrus_iconv *cv;
struct iconv_hooks *hooks;
const char *convname;
char src[PATH_MAX], *dst;
int *i;
cv = (struct _citrus_iconv *)(void *)cd;
hooks = (struct iconv_hooks *)argument;
i = (int *)argument;
if (ISBADF(cd)) {
errno = EBADF;
return (-1);
}
switch (request) {
case ICONV_TRIVIALP:
convname = cv->cv_shared->ci_convname;
dst = strchr(convname, '/');
strlcpy(src, convname, dst - convname + 1);
dst++;
if ((convname == NULL) || (src == NULL) || (dst == NULL))
return (-1);
*i = strcmp(src, dst) == 0 ? 1 : 0;
return (0);
case ICONV_GET_TRANSLITERATE:
*i = 1;
return (0);
case ICONV_SET_TRANSLITERATE:
return ((*i == 1) ? 0 : -1);
case ICONV_GET_DISCARD_ILSEQ:
*i = cv->cv_shared->ci_discard_ilseq ? 1 : 0;
return (0);
case ICONV_SET_DISCARD_ILSEQ:
cv->cv_shared->ci_discard_ilseq = *i;
return (0);
case ICONV_SET_HOOKS:
cv->cv_shared->ci_hooks = hooks;
return (0);
case ICONV_SET_FALLBACKS:
errno = EOPNOTSUPP;
return (-1);
default:
errno = EINVAL;
return (-1);
}
}
void
libiconv_set_relocation_prefix(const char *orig_prefix __unused,
const char *curr_prefix __unused)
{
}