1/* $Id: minixml.c,v 1.1.1.1 2008/10/23 17:30:45 jmaggard Exp $ */
2/* minixml.c : the minimum size a xml parser can be ! */
3/* Project : miniupnp
4 * webpage: http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
5 * Author : Thomas Bernard
6
7Copyright (c) 2005-2007, Thomas BERNARD
8All rights reserved.
9
10Redistribution and use in source and binary forms, with or without
11modification, are permitted provided that the following conditions are met:
12
13    * Redistributions of source code must retain the above copyright notice,
14      this list of conditions and the following disclaimer.
15    * Redistributions in binary form must reproduce the above copyright notice,
16      this list of conditions and the following disclaimer in the documentation
17      and/or other materials provided with the distribution.
18    * The name of the author may not be used to endorse or promote products
19	  derived from this software without specific prior written permission.
20
21THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31POSSIBILITY OF SUCH DAMAGE.
32*/
33#include "minixml.h"
34
35/* parseatt : used to parse the argument list
36 * return 0 (false) in case of success and -1 (true) if the end
37 * of the xmlbuffer is reached. */
38int parseatt(struct xmlparser * p)
39{
40	const char * attname;
41	int attnamelen;
42	const char * attvalue;
43	int attvaluelen;
44	while(p->xml < p->xmlend)
45	{
46		if(*p->xml=='/' || *p->xml=='>')
47			return 0;
48		if( !IS_WHITE_SPACE(*p->xml) )
49		{
50			char sep;
51			attname = p->xml;
52			attnamelen = 0;
53			while(*p->xml!='=' && !IS_WHITE_SPACE(*p->xml) )
54			{
55				attnamelen++; p->xml++;
56				if(p->xml >= p->xmlend)
57					return -1;
58			}
59			while(*(p->xml++) != '=')
60			{
61				if(p->xml >= p->xmlend)
62					return -1;
63			}
64			while(IS_WHITE_SPACE(*p->xml))
65			{
66				p->xml++;
67				if(p->xml >= p->xmlend)
68					return -1;
69			}
70			sep = *p->xml;
71			if(sep=='\'' || sep=='\"')
72			{
73				p->xml++;
74				if(p->xml >= p->xmlend)
75					return -1;
76				attvalue = p->xml;
77				attvaluelen = 0;
78				while(*p->xml != sep)
79				{
80					attvaluelen++; p->xml++;
81					if(p->xml >= p->xmlend)
82						return -1;
83				}
84			}
85			else
86			{
87				attvalue = p->xml;
88				attvaluelen = 0;
89				while(   !IS_WHITE_SPACE(*p->xml)
90					  && *p->xml != '>' && *p->xml != '/')
91				{
92					attvaluelen++; p->xml++;
93					if(p->xml >= p->xmlend)
94						return -1;
95				}
96			}
97			/*printf("%.*s='%.*s'\n",
98			       attnamelen, attname, attvaluelen, attvalue);*/
99			if(p->attfunc)
100				p->attfunc(p->data, attname, attnamelen, attvalue, attvaluelen);
101		}
102		p->xml++;
103	}
104	return -1;
105}
106
107/* parseelt parse the xml stream and
108 * call the callback functions when needed... */
109void parseelt(struct xmlparser * p)
110{
111	int i;
112	const char * elementname;
113	while(p->xml < (p->xmlend - 1))
114	{
115		if((p->xml)[0]=='<' && (p->xml)[1]!='?')
116		{
117			i = 0; elementname = ++p->xml;
118			while( !IS_WHITE_SPACE(*p->xml)
119				  && (*p->xml!='>') && (*p->xml!='/')
120				 )
121			{
122				i++; p->xml++;
123				if (p->xml >= p->xmlend)
124					return;
125				/* to ignore namespace : */
126				if(*p->xml==':')
127				{
128					i = 0;
129					elementname = ++p->xml;
130				}
131			}
132			if(i>0)
133			{
134				if(p->starteltfunc)
135					p->starteltfunc(p->data, elementname, i);
136				if(parseatt(p))
137					return;
138				if(*p->xml!='/')
139				{
140					const char * data;
141					i = 0; data = ++p->xml;
142					if (p->xml >= p->xmlend)
143						return;
144					while( IS_WHITE_SPACE(*p->xml) )
145					{
146						p->xml++;
147						if (p->xml >= p->xmlend)
148							return;
149					}
150					while(*p->xml!='<')
151					{
152						i++; p->xml++;
153						if (p->xml >= p->xmlend)
154							return;
155					}
156					if(i>0 && p->datafunc)
157						p->datafunc(p->data, data, i);
158				}
159			}
160			else if(*p->xml == '/')
161			{
162				i = 0; elementname = ++p->xml;
163				if (p->xml >= p->xmlend)
164					return;
165				while((*p->xml != '>'))
166				{
167					i++; p->xml++;
168					if (p->xml >= p->xmlend)
169						return;
170				}
171				if(p->endeltfunc)
172					p->endeltfunc(p->data, elementname, i);
173				p->xml++;
174			}
175		}
176		else
177		{
178			p->xml++;
179		}
180	}
181}
182
183/* the parser must be initialized before calling this function */
184void parsexml(struct xmlparser * parser)
185{
186	parser->xml = parser->xmlstart;
187	parser->xmlend = parser->xmlstart + parser->xmlsize;
188	parseelt(parser);
189}
190
191
192