mirror of git://git.psyced.org/git/psyced
111 lines
4.2 KiB
C
111 lines
4.2 KiB
C
// $Id: parse.c,v 1.12 2005/06/07 07:03:02 fippo Exp $ // vim:syntax=lpc
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//
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// the actual RSS parser
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// why the file is called "parse.c" i don't know
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// it certainly wouldn't be a good idea to have several parsers in one file
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// so you may as well rename it into rss.c? TODO
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//
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#include <net.h>
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#include <xml.h>
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inherit NET_PATH "xml/common";
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// DOM style XML parser
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xmlparse(a) {
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// this one is very similar to the jabber parser
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// from a syntax point of view
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string tag, data, params;
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int pos, close;
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int list;
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XMLNode currentnode = 0;
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XMLNode nodestack = ({ });
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params = "";
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pos = 0;
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close = -1;
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while(pos = strstr(a, "<", pos) + 1) {
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data = xmlunquote(a[close + 1..pos - 2]);
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close = strstr(a, ">", pos);
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sscanf(a[pos..close - 1], "%s%t%s", tag, params) || tag = a[pos..close-1];
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if(tag == "") return -1;
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if (strlen(tag) && (tag[0] == '!' || tag[0] == '?')){
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// P2(("skipping tag starting with ! or ?\n"))
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} else if (strlen(tag) && tag[0] == '/'){
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P4(("should be closing tag %O and am closing %O\n",
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currentnode[Tag], tag[1..]))
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if (!currentnode || currentnode[Tag] != tag[1..]) {
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// unbalanced xml?
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} else {
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// schliessender tag gefunden, die haben keine Parameter
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if (strlen(data) && data != "\r\n" && data != "\n"){
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// not sure if this works correct
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unless(pointerp(currentnode[Cdata]))
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currentnode[Cdata] = data;
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else
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currentnode[Cdata] += ({ data });
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}
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if (sizeof(nodestack) == 0) {
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// we can probably break/return here
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break;
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} else {
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currentnode = nodestack[<1];
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nodestack = nodestack[..<2];
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}
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}
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} else { // opening tag
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int selfclosing;
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mixed newnode;
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string key, val;
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if (strlen(params) && params[<1] == '/') {
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params = params[..<2];
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selfclosing = 1;
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newnode = new_XMLNode;
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} else if (tag[<1] == '/') {
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tag = tag[..<2];
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selfclosing = 1;
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newnode = new_XMLNode;
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} else {
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newnode = new_XMLNode;
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}
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if(currentnode){
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nodestack += ({ currentnode });
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if (pointerp(currentnode[Child][tag])) {
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unless (nodelistp(currentnode[Child][tag])) {
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// tranform
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currentnode[Child][tag] = ({ currentnode[Child][tag], newnode });
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} else {
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// append
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currentnode[Child][tag] += ({ newnode });
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}
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currentnode = currentnode[Child][tag][<1];
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} else {
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currentnode[Child][tag] = newnode;
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currentnode = currentnode[Child][tag];
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}
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} else {
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currentnode = newnode;
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}
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currentnode[Tag] = tag;
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foreach(string pa: explode(params, " ")) {
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if(sscanf(pa, "%s=\"%s\"", key, val) == 2 ||
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sscanf(pa, "%s=\'%s\'", key, val) == 2 ) {
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currentnode[Param][key] = val;
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}
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}
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if (selfclosing) {
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if (sizeof(nodestack) == 0){
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PT(("nodestack empty\n"))
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} else {
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currentnode = nodestack[<1];
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nodestack = nodestack[..<2];
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}
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}
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}
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}
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return currentnode;
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}
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