1/* $Id: minixml.c,v 1.10 2012/03/05 19:42:47 nanard 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) 2005-2011, 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 <string.h> 34#include "minixml.h" 35 36/* parseatt : used to parse the argument list 37 * return 0 (false) in case of success and -1 (true) if the end 38 * of the xmlbuffer is reached. */ 39static int parseatt(struct xmlparser * p) 40{ 41 const char * attname; 42 int attnamelen; 43 const char * attvalue; 44 int attvaluelen; 45 while(p->xml < p->xmlend) 46 { 47 if(*p->xml=='/' || *p->xml=='>') 48 return 0; 49 if( !IS_WHITE_SPACE(*p->xml) ) 50 { 51 char sep; 52 attname = p->xml; 53 attnamelen = 0; 54 while(*p->xml!='=' && !IS_WHITE_SPACE(*p->xml) ) 55 { 56 attnamelen++; p->xml++; 57 if(p->xml >= p->xmlend) 58 return -1; 59 } 60 while(*(p->xml++) != '=') 61 { 62 if(p->xml >= p->xmlend) 63 return -1; 64 } 65 while(IS_WHITE_SPACE(*p->xml)) 66 { 67 p->xml++; 68 if(p->xml >= p->xmlend) 69 return -1; 70 } 71 sep = *p->xml; 72 if(sep=='\'' || sep=='\"') 73 { 74 p->xml++; 75 if(p->xml >= p->xmlend) 76 return -1; 77 attvalue = p->xml; 78 attvaluelen = 0; 79 while(*p->xml != sep) 80 { 81 attvaluelen++; p->xml++; 82 if(p->xml >= p->xmlend) 83 return -1; 84 } 85 } 86 else 87 { 88 attvalue = p->xml; 89 attvaluelen = 0; 90 while( !IS_WHITE_SPACE(*p->xml) 91 && *p->xml != '>' && *p->xml != '/') 92 { 93 attvaluelen++; p->xml++; 94 if(p->xml >= p->xmlend) 95 return -1; 96 } 97 } 98 /*printf("%.*s='%.*s'\n", 99 attnamelen, attname, attvaluelen, attvalue);*/ 100 if(p->attfunc) 101 p->attfunc(p->data, attname, attnamelen, attvalue, attvaluelen); 102 } 103 p->xml++; 104 } 105 return -1; 106} 107 108/* parseelt parse the xml stream and 109 * call the callback functions when needed... */ 110static void parseelt(struct xmlparser * p) 111{ 112 int i; 113 const char * elementname; 114 while(p->xml < (p->xmlend - 1)) 115 { 116 if((p->xml)[0]=='<' && (p->xml)[1]!='?') 117 { 118 i = 0; elementname = ++p->xml; 119 while( !IS_WHITE_SPACE(*p->xml) 120 && (*p->xml!='>') && (*p->xml!='/') 121 ) 122 { 123 i++; p->xml++; 124 if (p->xml >= p->xmlend) 125 return; 126 /* to ignore namespace : */ 127 if(*p->xml==':') 128 { 129 i = 0; 130 elementname = ++p->xml; 131 } 132 } 133 if(i>0) 134 { 135 if(p->starteltfunc) 136 p->starteltfunc(p->data, elementname, i); 137 if(parseatt(p)) 138 return; 139 if(*p->xml!='/') 140 { 141 const char * data; 142 i = 0; data = ++p->xml; 143 if (p->xml >= p->xmlend) 144 return; 145 while( IS_WHITE_SPACE(*p->xml) ) 146 { 147 i++; p->xml++; 148 if (p->xml >= p->xmlend) 149 return; 150 } 151 if(memcmp(p->xml, "<![CDATA[", 9) == 0) 152 { 153 /* CDATA handling */ 154 p->xml += 9; 155 data = p->xml; 156 i = 0; 157 while(memcmp(p->xml, "]]>", 3) != 0) 158 { 159 i++; p->xml++; 160 if ((p->xml + 3) >= p->xmlend) 161 return; 162 } 163 if(i>0 && p->datafunc) 164 p->datafunc(p->data, data, i); 165 while(*p->xml!='<') 166 { 167 p->xml++; 168 if (p->xml >= p->xmlend) 169 return; 170 } 171 } 172 else 173 { 174 while(*p->xml!='<') 175 { 176 i++; p->xml++; 177 if ((p->xml + 1) >= p->xmlend) 178 return; 179 } 180 if(i>0 && p->datafunc && *(p->xml + 1) == '/') 181 p->datafunc(p->data, data, i); 182 } 183 } 184 } 185 else if(*p->xml == '/') 186 { 187 i = 0; elementname = ++p->xml; 188 if (p->xml >= p->xmlend) 189 return; 190 while((*p->xml != '>')) 191 { 192 i++; p->xml++; 193 if (p->xml >= p->xmlend) 194 return; 195 } 196 if(p->endeltfunc) 197 p->endeltfunc(p->data, elementname, i); 198 p->xml++; 199 } 200 } 201 else 202 { 203 p->xml++; 204 } 205 } 206} 207 208/* the parser must be initialized before calling this function */ 209void parsexml(struct xmlparser * parser) 210{ 211 parser->xml = parser->xmlstart; 212 parser->xmlend = parser->xmlstart + parser->xmlsize; 213 parseelt(parser); 214} 215 216 217