2 * Copyright 2007 Jacek Caban for CodeWeavers
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/debug.h"
24 WINE_DEFAULT_DEBUG_CHANNEL(htmlhelp);
26 void strbuf_init(strbuf_t *buf)
30 buf->buf = heap_alloc(buf->size);
33 void strbuf_zero(strbuf_t *buf)
38 void strbuf_free(strbuf_t *buf)
43 static void strbuf_append(strbuf_t *buf, const char *data, int len)
45 if(buf->len+len > buf->size) {
46 buf->size = buf->len+len;
47 buf->buf = heap_realloc(buf->buf, buf->size);
50 memcpy(buf->buf+buf->len, data, len);
54 void stream_init(stream_t *stream, IStream *str)
56 memset(stream, 0, sizeof(stream_t));
60 static BOOL stream_chr(stream_t *stream, strbuf_t *buf, char c)
66 for(i=stream->p; i<stream->size; i++) {
67 if(stream->buf[i] == c) {
73 if(buf && i > stream->p)
74 strbuf_append(buf, stream->buf+stream->p, i-stream->p);
77 if(stream->p == stream->size) {
79 IStream_Read(stream->str, stream->buf, sizeof(stream->buf), &stream->size);
85 return stream->size != 0;
88 void get_node_name(strbuf_t *node, strbuf_t *name)
90 const char *ptr = node->buf+1;
94 while(*ptr != '>' && !isspace(*ptr))
97 strbuf_append(name, node->buf+1, ptr-node->buf-1);
98 strbuf_append(name, "", 1);
101 /* Return the stream content up to the next HTML tag.
103 * Note: the first returned character is the end of the last tag (>).
105 BOOL next_content(stream_t *stream, strbuf_t *buf)
107 if(!stream_chr(stream, buf, '<'))
113 BOOL next_node(stream_t *stream, strbuf_t *buf)
115 if(!stream_chr(stream, NULL, '<'))
118 if(!stream_chr(stream, buf, '>'))
121 strbuf_append(buf, ">", 2);
127 * Find the value of a named HTML attribute.
129 * Note: Attribute names are case insensitive, so it is necessary to
130 * put both the node text and the attribute name in the same case
131 * before attempting a string search.
133 const char *get_attr(const char *node, const char *name, int *len)
135 const char *ptr, *ptr2;
136 int name_len, node_len;
141 /* Create a lower case copy of the node */
142 node_len = strlen(node)+1;
143 node_buf = heap_alloc(node_len*sizeof(char));
146 memcpy(node_buf, node, node_len);
147 for(i=0;i<node_len;i++)
148 node_buf[i] = tolower(node_buf[i]);
149 /* Create a lower case copy of the attribute name (search string) */
150 name_len = strlen(name);
151 memcpy(name_buf, name, name_len);
152 for(i=0;i<name_len;i++)
153 name_buf[i] = tolower(name_buf[i]);
154 name_buf[name_len++] = '=';
155 name_buf[name_len++] = '\"';
156 name_buf[name_len] = 0;
158 ptr = strstr(node_buf, name_buf);
160 WARN("name not found\n");
166 ptr2 = strchr(ptr, '\"');
174 /* Return the pointer offset within the original string */
175 ptr = node+(ptr-node_buf);