1219019Sgabor/* $FreeBSD$ */ 2219019Sgabor/* $NetBSD: citrus_memstream.c,v 1.4 2009/02/03 05:02:12 lukem Exp $ */ 3219019Sgabor 4219019Sgabor/*- 5219019Sgabor * Copyright (c)2003 Citrus Project, 6219019Sgabor * All rights reserved. 7219019Sgabor * 8219019Sgabor * Redistribution and use in source and binary forms, with or without 9219019Sgabor * modification, are permitted provided that the following conditions 10219019Sgabor * are met: 11219019Sgabor * 1. Redistributions of source code must retain the above copyright 12219019Sgabor * notice, this list of conditions and the following disclaimer. 13219019Sgabor * 2. Redistributions in binary form must reproduce the above copyright 14219019Sgabor * notice, this list of conditions and the following disclaimer in the 15219019Sgabor * documentation and/or other materials provided with the distribution. 16219019Sgabor * 17219019Sgabor * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18219019Sgabor * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19219019Sgabor * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20219019Sgabor * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21219019Sgabor * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22219019Sgabor * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23219019Sgabor * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24219019Sgabor * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25219019Sgabor * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26219019Sgabor * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27219019Sgabor * SUCH DAMAGE. 28219019Sgabor */ 29219019Sgabor 30219019Sgabor#include <sys/cdefs.h> 31219019Sgabor 32219019Sgabor#include <assert.h> 33219019Sgabor#include <stdio.h> 34219019Sgabor#include <stdlib.h> 35219019Sgabor#include <string.h> 36219019Sgabor 37219019Sgabor#include "citrus_namespace.h" 38219019Sgabor#include "citrus_region.h" 39219019Sgabor#include "citrus_memstream.h" 40219019Sgabor#include "citrus_bcs.h" 41219019Sgabor 42219019Sgaborconst char * 43219019Sgabor_citrus_memory_stream_getln(struct _citrus_memory_stream * __restrict ms, 44219019Sgabor size_t * __restrict rlen) 45219019Sgabor{ 46219019Sgabor const uint8_t *h, *p; 47219019Sgabor size_t ret; 48219019Sgabor int i; 49219019Sgabor 50219019Sgabor if (ms->ms_pos>=_region_size(&ms->ms_region)) 51219019Sgabor return (NULL); 52219019Sgabor 53219019Sgabor h = p = (uint8_t *)_region_offset(&ms->ms_region, ms->ms_pos); 54219019Sgabor ret = 0; 55219019Sgabor for (i = _region_size(&ms->ms_region) - ms->ms_pos; i > 0; i--) { 56219019Sgabor ret++; 57219019Sgabor if (_bcs_iseol(*p)) 58219019Sgabor break; 59219019Sgabor p++; 60219019Sgabor } 61219019Sgabor 62219019Sgabor ms->ms_pos += ret; 63219019Sgabor *rlen = ret; 64219019Sgabor return ((const char *)h); 65219019Sgabor} 66219019Sgabor 67219019Sgabor#define T_COMM '#' 68219019Sgabor 69219019Sgaborconst char * 70219019Sgabor_citrus_memory_stream_matchline(struct _citrus_memory_stream * __restrict ms, 71219019Sgabor const char * __restrict key, size_t * __restrict rlen, int iscasesensitive) 72219019Sgabor{ 73219019Sgabor const char *p, *q; 74219019Sgabor size_t keylen, len; 75219019Sgabor 76219019Sgabor keylen = strlen(key); 77219019Sgabor for(;;) { 78219019Sgabor p = _citrus_memory_stream_getln(ms, &len); 79219019Sgabor if (p == NULL) 80219019Sgabor return (NULL); 81219019Sgabor 82219019Sgabor /* ignore comment */ 83219019Sgabor q = memchr(p, T_COMM, len); 84219019Sgabor if (q) { 85219019Sgabor len = q - p; 86219019Sgabor } 87219019Sgabor /* ignore trailing white space and newline */ 88219019Sgabor _bcs_trunc_rws_len(p, &len); 89219019Sgabor if (len == 0) 90219019Sgabor continue; /* ignore null line */ 91219019Sgabor 92219019Sgabor /* skip white spaces at the head of the line */ 93219019Sgabor p = _bcs_skip_ws_len(p, &len); 94219019Sgabor q = _bcs_skip_nonws_len(p, &len); 95219019Sgabor 96219019Sgabor if ((size_t)(q - p) == keylen) { 97219019Sgabor if (iscasesensitive) { 98219019Sgabor if (memcmp(key, p, keylen) == 0) 99219019Sgabor break; /* match */ 100219019Sgabor } else { 101219019Sgabor if (_bcs_strncasecmp(key, p, keylen) == 0) 102219019Sgabor break; /* match */ 103219019Sgabor } 104219019Sgabor } 105219019Sgabor } 106219019Sgabor 107219019Sgabor p = _bcs_skip_ws_len(q, &len); 108219019Sgabor *rlen = len; 109219019Sgabor 110219019Sgabor return (p); 111219019Sgabor} 112219019Sgabor 113219019Sgaborvoid * 114219019Sgabor_citrus_memory_stream_chr(struct _citrus_memory_stream *ms, 115219019Sgabor struct _citrus_region *r, char ch) 116219019Sgabor{ 117219019Sgabor void *chr, *head; 118219019Sgabor size_t sz; 119219019Sgabor 120219019Sgabor if (ms->ms_pos >= _region_size(&ms->ms_region)) 121219019Sgabor return (NULL); 122219019Sgabor 123219019Sgabor head = _region_offset(&ms->ms_region, ms->ms_pos); 124219019Sgabor chr = memchr(head, ch, _memstream_remainder(ms)); 125219019Sgabor if (chr == NULL) { 126219019Sgabor _region_init(r, head, _memstream_remainder(ms)); 127219019Sgabor ms->ms_pos = _region_size(&ms->ms_region); 128219019Sgabor return (NULL); 129219019Sgabor } 130219019Sgabor sz = (char *)chr - (char *)head; 131219019Sgabor 132219019Sgabor _region_init(r, head, sz); 133219019Sgabor ms->ms_pos += sz + 1; 134219019Sgabor 135219019Sgabor return (chr); 136219019Sgabor} 137219019Sgabor 138219019Sgaborvoid 139219019Sgabor_citrus_memory_stream_skip_ws(struct _citrus_memory_stream *ms) 140219019Sgabor{ 141219019Sgabor int ch; 142219019Sgabor 143219019Sgabor while ((ch = _memstream_peek(ms)) != EOF) { 144219019Sgabor if (!_bcs_isspace(ch)) 145219019Sgabor break; 146219019Sgabor _memstream_getc(ms); 147219019Sgabor } 148219019Sgabor} 149