Annotation of embedaddon/miniupnpd/miniupnpc-async/minixml.c, revision 1.1
1.1 ! misho 1: /* $Id: minixml.c,v 1.12 2017/12/12 11:17:40 nanard Exp $ */
! 2: /* vim: tabstop=4 shiftwidth=4 noexpandtab
! 3: * minixml.c : the minimum size a xml parser can be ! */
! 4: /* Project : miniupnp
! 5: * webpage: http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
! 6: * Author : Thomas Bernard
! 7:
! 8: Copyright (c) 2005-2017, Thomas BERNARD
! 9: All rights reserved.
! 10:
! 11: Redistribution and use in source and binary forms, with or without
! 12: modification, are permitted provided that the following conditions are met:
! 13:
! 14: * Redistributions of source code must retain the above copyright notice,
! 15: this list of conditions and the following disclaimer.
! 16: * Redistributions in binary form must reproduce the above copyright notice,
! 17: this list of conditions and the following disclaimer in the documentation
! 18: and/or other materials provided with the distribution.
! 19: * The name of the author may not be used to endorse or promote products
! 20: derived from this software without specific prior written permission.
! 21:
! 22: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
! 23: AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 24: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 25: ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
! 26: LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 27: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 28: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 29: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 30: CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 31: ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 32: POSSIBILITY OF SUCH DAMAGE.
! 33: */
! 34: #include <string.h>
! 35: #include "minixml.h"
! 36:
! 37: /* parseatt : used to parse the argument list
! 38: * return 0 (false) in case of success and -1 (true) if the end
! 39: * of the xmlbuffer is reached. */
! 40: static int parseatt(struct xmlparser * p)
! 41: {
! 42: const char * attname;
! 43: int attnamelen;
! 44: const char * attvalue;
! 45: int attvaluelen;
! 46: while(p->xml < p->xmlend)
! 47: {
! 48: if(*p->xml=='/' || *p->xml=='>')
! 49: return 0;
! 50: if( !IS_WHITE_SPACE(*p->xml) )
! 51: {
! 52: char sep;
! 53: attname = p->xml;
! 54: attnamelen = 0;
! 55: while(*p->xml!='=' && !IS_WHITE_SPACE(*p->xml) )
! 56: {
! 57: attnamelen++; p->xml++;
! 58: if(p->xml >= p->xmlend)
! 59: return -1;
! 60: }
! 61: while(*(p->xml++) != '=')
! 62: {
! 63: if(p->xml >= p->xmlend)
! 64: return -1;
! 65: }
! 66: while(IS_WHITE_SPACE(*p->xml))
! 67: {
! 68: p->xml++;
! 69: if(p->xml >= p->xmlend)
! 70: return -1;
! 71: }
! 72: sep = *p->xml;
! 73: if(sep=='\'' || sep=='\"')
! 74: {
! 75: p->xml++;
! 76: if(p->xml >= p->xmlend)
! 77: return -1;
! 78: attvalue = p->xml;
! 79: attvaluelen = 0;
! 80: while(*p->xml != sep)
! 81: {
! 82: attvaluelen++; p->xml++;
! 83: if(p->xml >= p->xmlend)
! 84: return -1;
! 85: }
! 86: }
! 87: else
! 88: {
! 89: attvalue = p->xml;
! 90: attvaluelen = 0;
! 91: while( !IS_WHITE_SPACE(*p->xml)
! 92: && *p->xml != '>' && *p->xml != '/')
! 93: {
! 94: attvaluelen++; p->xml++;
! 95: if(p->xml >= p->xmlend)
! 96: return -1;
! 97: }
! 98: }
! 99: /*printf("%.*s='%.*s'\n",
! 100: attnamelen, attname, attvaluelen, attvalue);*/
! 101: if(p->attfunc)
! 102: p->attfunc(p->data, attname, attnamelen, attvalue, attvaluelen);
! 103: }
! 104: p->xml++;
! 105: }
! 106: return -1;
! 107: }
! 108:
! 109: /* parseelt parse the xml stream and
! 110: * call the callback functions when needed... */
! 111: static void parseelt(struct xmlparser * p)
! 112: {
! 113: int i;
! 114: const char * elementname;
! 115: while(p->xml < (p->xmlend - 1))
! 116: {
! 117: if((p->xml + 4) <= p->xmlend && (0 == memcmp(p->xml, "<!--", 4)))
! 118: {
! 119: p->xml += 3;
! 120: /* ignore comments */
! 121: do
! 122: {
! 123: p->xml++;
! 124: if ((p->xml + 3) >= p->xmlend)
! 125: return;
! 126: }
! 127: while(memcmp(p->xml, "-->", 3) != 0);
! 128: p->xml += 3;
! 129: }
! 130: else if((p->xml)[0]=='<' && (p->xml)[1]!='?')
! 131: {
! 132: i = 0; elementname = ++p->xml;
! 133: while( !IS_WHITE_SPACE(*p->xml)
! 134: && (*p->xml!='>') && (*p->xml!='/')
! 135: )
! 136: {
! 137: i++; p->xml++;
! 138: if (p->xml >= p->xmlend)
! 139: return;
! 140: /* to ignore namespace : */
! 141: if(*p->xml==':')
! 142: {
! 143: i = 0;
! 144: elementname = ++p->xml;
! 145: }
! 146: }
! 147: if(i>0)
! 148: {
! 149: if(p->starteltfunc)
! 150: p->starteltfunc(p->data, elementname, i);
! 151: if(parseatt(p))
! 152: return;
! 153: if(*p->xml!='/')
! 154: {
! 155: const char * data;
! 156: i = 0; data = ++p->xml;
! 157: if (p->xml >= p->xmlend)
! 158: return;
! 159: while( IS_WHITE_SPACE(*p->xml) )
! 160: {
! 161: i++; p->xml++;
! 162: if (p->xml >= p->xmlend)
! 163: return;
! 164: }
! 165: /* CDATA are at least 9 + 3 characters long : <![CDATA[ ]]> */
! 166: if((p->xmlend >= (p->xml + (9 + 3))) && (memcmp(p->xml, "<![CDATA[", 9) == 0))
! 167: {
! 168: /* CDATA handling */
! 169: p->xml += 9;
! 170: data = p->xml;
! 171: i = 0;
! 172: while(memcmp(p->xml, "]]>", 3) != 0)
! 173: {
! 174: i++; p->xml++;
! 175: if ((p->xml + 3) >= p->xmlend)
! 176: return;
! 177: }
! 178: if(i>0 && p->datafunc)
! 179: p->datafunc(p->data, data, i);
! 180: while(*p->xml!='<')
! 181: {
! 182: p->xml++;
! 183: if (p->xml >= p->xmlend)
! 184: return;
! 185: }
! 186: }
! 187: else
! 188: {
! 189: while(*p->xml!='<')
! 190: {
! 191: i++; p->xml++;
! 192: if ((p->xml + 1) >= p->xmlend)
! 193: return;
! 194: }
! 195: if(i>0 && p->datafunc && *(p->xml + 1) == '/')
! 196: p->datafunc(p->data, data, i);
! 197: }
! 198: }
! 199: }
! 200: else if(*p->xml == '/')
! 201: {
! 202: i = 0; elementname = ++p->xml;
! 203: if (p->xml >= p->xmlend)
! 204: return;
! 205: while((*p->xml != '>'))
! 206: {
! 207: i++; p->xml++;
! 208: if (p->xml >= p->xmlend)
! 209: return;
! 210: }
! 211: if(p->endeltfunc)
! 212: p->endeltfunc(p->data, elementname, i);
! 213: p->xml++;
! 214: }
! 215: }
! 216: else
! 217: {
! 218: p->xml++;
! 219: }
! 220: }
! 221: }
! 222:
! 223: /* the parser must be initialized before calling this function */
! 224: void parsexml(struct xmlparser * parser)
! 225: {
! 226: parser->xml = parser->xmlstart;
! 227: parser->xmlend = parser->xmlstart + parser->xmlsize;
! 228: parseelt(parser);
! 229: }
! 230:
! 231:
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