b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
259 lines
6.2 KiB
C
259 lines
6.2 KiB
C
/* $NetBSD: citrus_mapper_646.c,v 1.4 2003/07/14 11:37:49 tshiozak Exp $ */
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/*-
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* Copyright (c)2003 Citrus Project,
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: citrus_mapper_646.c,v 1.4 2003/07/14 11:37:49 tshiozak Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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#include <sys/queue.h>
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#include "citrus_namespace.h"
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#include "citrus_types.h"
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#include "citrus_bcs.h"
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#include "citrus_module.h"
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#include "citrus_region.h"
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#include "citrus_memstream.h"
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#include "citrus_mmap.h"
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#include "citrus_hash.h"
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#include "citrus_mapper.h"
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#include "citrus_mapper_646.h"
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/* ---------------------------------------------------------------------- */
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_CITRUS_MAPPER_DECLS(mapper_646);
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_CITRUS_MAPPER_DEF_OPS(mapper_646);
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/* ---------------------------------------------------------------------- */
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#define ILSEQ 0xFFFFFFFE
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#define INVALID 0xFFFFFFFF
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#define SPECIALS(x) \
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x(0x23) \
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x(0x24) \
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x(0x40) \
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x(0x5B) \
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x(0x5C) \
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x(0x5D) \
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x(0x5E) \
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x(0x60) \
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x(0x7B) \
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x(0x7C) \
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x(0x7D) \
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x(0x7E)
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#define INDEX(x) INDEX_##x,
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enum {
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SPECIALS(INDEX)
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NUM_OF_SPECIALS
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};
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struct _citrus_mapper_646 {
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int m6_forward;
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_index_t m6_map[NUM_OF_SPECIALS];
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};
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int
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_citrus_mapper_646_mapper_getops(struct _citrus_mapper_ops *ops,
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size_t lenops, uint32_t expected_version)
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{
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if (expected_version<_CITRUS_MAPPER_ABI_VERSION || lenops<sizeof(*ops))
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return EINVAL;
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memcpy(ops, &_citrus_mapper_646_mapper_ops,
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sizeof(_citrus_mapper_646_mapper_ops));
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return 0;
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}
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#define T_COMM '#'
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static int
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parse_file(struct _citrus_mapper_646 *m6, const char *path)
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{
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int ret, i;
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struct _region r;
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struct _memstream ms;
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const char *p;
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size_t len;
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char buf[PATH_MAX];
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ret = _map_file(&r, path);
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if (ret)
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return ret;
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_memstream_bind(&ms, &r);
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for (i=0; i<NUM_OF_SPECIALS; i++) {
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retry:
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p = _memstream_getln(&ms, &len);
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if (p==NULL) {
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ret = EINVAL;
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break;
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}
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p = _bcs_skip_ws_len(p, &len);
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if (*p == T_COMM || len==0)
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goto retry;
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if (!_bcs_isdigit(*p)) {
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ret = EINVAL;
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break;
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}
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snprintf(buf, sizeof(buf), "%.*s", (int)len, p);
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m6->m6_map[i] = strtoul(buf, (char **)&p, 0);
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p = _bcs_skip_ws(buf);
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if (*p != T_COMM && !*p) {
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ret = EINVAL;
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break;
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}
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}
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_unmap_file(&r);
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return ret;
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};
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static int
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parse_var(struct _citrus_mapper_646 *m6, struct _memstream *ms,
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const char *dir)
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{
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struct _region r;
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char path[PATH_MAX];
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m6->m6_forward = 1;
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_memstream_skip_ws(ms);
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/* whether backward */
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if (_memstream_peek(ms) == '!') {
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_memstream_getc(ms);
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m6->m6_forward = 0;
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}
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/* get description file path */
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_memstream_getregion(ms, &r, _memstream_remainder(ms));
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snprintf(path, sizeof(path), "%s/%.*s",
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dir, (int)_region_size(&r), (char *)_region_head(&r));
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/* remove trailing white spaces */
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path[_bcs_skip_nonws(path)-path] = '\0';
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return parse_file(m6, path);
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}
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static int
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/*ARGSUSED*/
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_citrus_mapper_646_mapper_init(struct _citrus_mapper_area *__restrict ma,
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struct _citrus_mapper * __restrict cm,
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const char * __restrict dir,
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const void * __restrict var, size_t lenvar,
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struct _citrus_mapper_traits * __restrict mt,
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size_t lenmt)
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{
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struct _citrus_mapper_646 *m6;
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struct _memstream ms;
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struct _region r;
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int ret;
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_DIAGASSERT(cm && dir && mt);
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if (lenmt<sizeof(*mt))
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return EINVAL;
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m6 = malloc(sizeof(*m6));
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if (m6 == NULL)
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return errno;
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_region_init(&r, (void *)var, lenvar);
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_memstream_bind(&ms, &r);
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ret = parse_var(m6, &ms, dir);
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if (ret) {
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free(m6);
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return ret;
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}
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cm->cm_closure = m6;
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mt->mt_src_max = mt->mt_dst_max = 1; /* 1:1 converter */
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mt->mt_state_size = 0; /* stateless */
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return 0;
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}
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static void
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/*ARGSUSED*/
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_citrus_mapper_646_mapper_uninit(struct _citrus_mapper *cm)
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{
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if (cm && cm->cm_closure) {
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free(cm->cm_closure);
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}
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}
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static int
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/*ARGSUSED*/
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_citrus_mapper_646_mapper_convert(struct _citrus_mapper * __restrict cm,
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_index_t * __restrict dst, _index_t src,
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void * __restrict ps)
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{
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struct _citrus_mapper_646 *m6;
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_DIAGASSERT(cm && cm->cm_closure);
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m6 = cm->cm_closure;
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if (m6->m6_forward) {
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/* forward */
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if (src>=0x80)
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return _MAPPER_CONVERT_ILSEQ;
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#define FORWARD(x) \
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if (src==(x)) { \
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if (m6->m6_map[INDEX_##x]==INVALID) \
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return _MAPPER_CONVERT_NONIDENTICAL; \
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*dst = m6->m6_map[INDEX_##x]; \
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return 0; \
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} else
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SPECIALS(FORWARD);
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*dst = src;
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} else {
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/* backward */
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#define BACKWARD(x) \
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if (m6->m6_map[INDEX_##x]!=INVALID && src==m6->m6_map[INDEX_##x]) { \
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*dst = (x); \
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return 0; \
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} else if (src==(x)) \
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return _MAPPER_CONVERT_ILSEQ; \
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else
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SPECIALS(BACKWARD);
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if (src>=0x80)
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return _MAPPER_CONVERT_NONIDENTICAL;
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*dst = src;
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}
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return _MAPPER_CONVERT_SUCCESS;
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}
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static void
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/*ARGSUSED*/
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_citrus_mapper_646_mapper_init_state(struct _citrus_mapper * __restrict cm,
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void * __restrict ps)
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{
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}
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