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/*
* xml.c
*
* Rudimentary XML parser
*
* (c) 2002-2005 Thomas White <taw27@srcf.ucam.org>
* Part of TuxMessenger - GTK+-based MSN Messenger client
*
* This package is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 dated June, 1991.
*
* This package is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this package; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include <stdlib.h>
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include "routines.h"
#include "debug.h"
char *xml_getfield(const char *xml, const char *field) {
char *identifier_start;
char *value;
identifier_start = strstr(xml, field);
if ( identifier_start == NULL ) {
return NULL;
}
value = routines_lindex(identifier_start + strlen(field) + 2, 0);
value[strlen(value)-1] = '\0';
return value;
}
char *xml_killillegalchars(const char *temp) {
char *result;
unsigned int i;
if ( temp == NULL ) {
return strdup("");
}
result = malloc(strlen(temp)+1);
strcpy(result, temp);
for ( i=0; i<strlen(result); i++ ) {
if ( result[i] == '/' ) {
result[i] = '-';
}
/* Don't even think about directory traversal... */
if ( result[i] == '.' ) {
result[i] = '-';
}
}
return result;
}
/* Get the block of text between two given tags. */
char *xml_getblock(const char *xml, size_t xmllength, const char *rootnode, const char *keyword, int entities) {
xmlDocPtr doc;
xmlNodePtr cur;
doc = xmlParseMemory(xml, xmllength);
if (doc == NULL ) {
return NULL;
}
cur = xmlDocGetRootElement(doc);
if (cur == NULL) {
xmlFreeDoc(doc);
return NULL;
}
if (xmlStrcmp(cur->name, rootnode)) {
xmlFreeDoc(doc);
return NULL;
}
cur = cur->xmlChildrenNode;
while (cur != NULL) {
if ((!xmlStrcmp(cur->name, keyword))) {
char *resultchar;
xmlChar *result = xmlNodeListGetString(doc, cur->xmlChildrenNode, entities);
if ( result == NULL ) {
return NULL;
}
resultchar = strdup(result);
xmlFree(result);
return resultchar;
}
cur = cur->next;
}
return NULL;
}
/* Set the block of text between two given tags. */
char *xml_setblock(const char *xml, size_t xmllength, const char *rootnode, const char *keyword, const char *value) {
xmlDocPtr doc;
xmlNodePtr cur;
doc = xmlParseMemory(xml, xmllength);
if (doc == NULL ) {
return NULL;
}
cur = xmlDocGetRootElement(doc);
if (cur == NULL) {
xmlFreeDoc(doc);
return NULL;
}
if (xmlStrcmp(cur->name, rootnode)) {
xmlFreeDoc(doc);
return NULL;
}
cur = cur->xmlChildrenNode;
while (cur != NULL) {
if ((!xmlStrcmp(cur->name, keyword))) {
xmlChar *xmlbuf;
size_t xmlbuflength;
char *text;
xmlNewTextChild(cur->parent, NULL, keyword, value);
xmlUnlinkNode(cur);
xmlFreeNode(cur);
xmlDocDumpFormatMemory(doc, &xmlbuf, &xmlbuflength, 0);
text = malloc(xmlbuflength+1);
memcpy(text, xmlbuf, xmlbuflength+1);
xmlFree(xmlbuf);
return text;
}
cur = cur->next;
}
return NULL;
}
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