154 lines
3.9 KiB
C
154 lines
3.9 KiB
C
/* $NetBSD: citrus_memstream.c,v 1.2 2004/01/02 21:49:35 itojun 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_memstream.c,v 1.2 2004/01/02 21:49:35 itojun Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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#include <assert.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 "citrus_namespace.h"
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#include "citrus_region.h"
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#include "citrus_memstream.h"
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#include "citrus_bcs.h"
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const char *
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_citrus_memory_stream_getln(struct _citrus_memory_stream * __restrict ms,
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size_t * __restrict rlen)
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{
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int i;
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const u_int8_t *h, *p;
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size_t ret;
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if (ms->ms_pos>=_region_size(&ms->ms_region))
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return (NULL);
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h = p = (uint8_t *)_region_offset(&ms->ms_region, ms->ms_pos);
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ret = 0;
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for (i = _region_size(&ms->ms_region) - ms->ms_pos; i > 0; i--) {
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ret++;
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if (_bcs_iseol(*p))
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break;
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p++;
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}
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ms->ms_pos += ret;
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*rlen = ret;
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return ((const char *)h);
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}
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#define T_COMM '#'
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const char *
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_citrus_memory_stream_matchline(struct _citrus_memory_stream * __restrict ms,
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const char * __restrict key,
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size_t * __restrict rlen,
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int iscasesensitive)
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{
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const char *p, *q;
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size_t len, keylen;
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keylen = strlen(key);
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while (/*CONSTCOND*/ 1) {
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p = _citrus_memory_stream_getln(ms, &len);
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if (p == NULL)
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return (NULL);
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/* ignore comment */
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q = memchr(p, T_COMM, len);
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if (q) {
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len = q-p;
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}
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/* ignore trailing white space and newline */
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_bcs_trunc_rws_len(p, &len);
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if (len == 0)
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continue; /* ignore null line */
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/* skip white spaces at the head of the line */
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p = _bcs_skip_ws_len(p, &len);
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q = _bcs_skip_nonws_len(p, &len);
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if (q-p == keylen) {
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if (iscasesensitive) {
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if (memcmp(key, p, keylen) == 0)
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break; /* match */
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} else {
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if (_bcs_strncasecmp(key, p, keylen) == 0)
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break; /* match */
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}
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}
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}
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p = _bcs_skip_ws_len(q, &len);
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*rlen = len;
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return (p);
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}
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void *
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_citrus_memory_stream_chr(struct _citrus_memory_stream *ms,
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struct _citrus_region *r, char ch)
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{
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void *head, *chr;
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size_t sz;
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if (ms->ms_pos >= _region_size(&ms->ms_region))
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return NULL;
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head = _region_offset(&ms->ms_region, ms->ms_pos);
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chr = memchr(head, ch, _memstream_remainder(ms));
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if (chr == NULL) {
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_region_init(r, head, _memstream_remainder(ms));
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ms->ms_pos = _region_size(&ms->ms_region);
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return NULL;
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}
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sz = (char *)chr - (char *)head;
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_region_init(r, head, sz);
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ms->ms_pos += sz+1;
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return chr;
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}
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void
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_citrus_memory_stream_skip_ws(struct _citrus_memory_stream *ms)
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{
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int ch;
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while ((ch = _memstream_peek(ms)) != EOF) {
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if (!_bcs_isspace(ch))
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break;
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_memstream_getc(ms);
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}
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}
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