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/* $FreeBSD$ */
/* $NetBSD: citrus_memstream.c,v 1.4 2009/02/03 05:02:12 lukem 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>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "citrus_namespace.h"
#include "citrus_region.h"
#include "citrus_memstream.h"
#include "citrus_bcs.h"
const char *
_citrus_memory_stream_getln(struct _citrus_memory_stream * __restrict ms,
size_t * __restrict rlen)
{
const uint8_t *h, *p;
size_t ret;
int i;
if (ms->ms_pos>=_region_size(&ms->ms_region))
return (NULL);
h = p = (uint8_t *)_region_offset(&ms->ms_region, ms->ms_pos);
ret = 0;
for (i = _region_size(&ms->ms_region) - ms->ms_pos; i > 0; i--) {
ret++;
if (_bcs_iseol(*p))
break;
p++;
}
ms->ms_pos += ret;
*rlen = ret;
return ((const char *)h);
}
#define T_COMM '#'
const char *
_citrus_memory_stream_matchline(struct _citrus_memory_stream * __restrict ms,
const char * __restrict key, size_t * __restrict rlen, int iscasesensitive)
{
const char *p, *q;
size_t keylen, len;
keylen = strlen(key);
for(;;) {
p = _citrus_memory_stream_getln(ms, &len);
if (p == NULL)
return (NULL);
/* ignore comment */
q = memchr(p, T_COMM, len);
if (q) {
len = q - p;
}
/* ignore trailing white space and newline */
_bcs_trunc_rws_len(p, &len);
if (len == 0)
continue; /* ignore null line */
/* skip white spaces at the head of the line */
p = _bcs_skip_ws_len(p, &len);
q = _bcs_skip_nonws_len(p, &len);
if ((size_t)(q - p) == keylen) {
if (iscasesensitive) {
if (memcmp(key, p, keylen) == 0)
break; /* match */
} else {
if (_bcs_strncasecmp(key, p, keylen) == 0)
break; /* match */
}
}
}
p = _bcs_skip_ws_len(q, &len);
*rlen = len;
return (p);
}
void *
_citrus_memory_stream_chr(struct _citrus_memory_stream *ms,
struct _citrus_region *r, char ch)
{
void *chr, *head;
size_t sz;
if (ms->ms_pos >= _region_size(&ms->ms_region))
return (NULL);
head = _region_offset(&ms->ms_region, ms->ms_pos);
chr = memchr(head, ch, _memstream_remainder(ms));
if (chr == NULL) {
_region_init(r, head, _memstream_remainder(ms));
ms->ms_pos = _region_size(&ms->ms_region);
return (NULL);
}
sz = (char *)chr - (char *)head;
_region_init(r, head, sz);
ms->ms_pos += sz + 1;
return (chr);
}
void
_citrus_memory_stream_skip_ws(struct _citrus_memory_stream *ms)
{
int ch;
while ((ch = _memstream_peek(ms)) != EOF) {
if (!_bcs_isspace(ch))
break;
_memstream_getc(ms);
}
}
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