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/*
* This file is part of GetHT
*
* See COPYING file for copyright, license and warranty details.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include "getht.h"
iss ** parsetoc(char *filepath, int * iss_no);
int parseissue(xmlDocPtr file, xmlNodePtr node, iss * cur_issue);
void parsesection(xmlDocPtr file, xmlNodePtr node, sec * cur_section);
void tokenise_hyphons(char to_token[10], int * first, int * last);
int no_of_issues;
iss ** parsetoc(char *filepath, int * iss_no)
/* starts parsing of xml to issue structure */
{
xmlDocPtr file;
xmlNodePtr node;
if(ready_xml(filepath, "issues", &file, &node))
return NULL;
*node = *node->xmlChildrenNode;
no_of_issues = -1;
iss ** issue = NULL;
xmlNodePtr cnode;
while(node != NULL)
{
if(!xmlStrncmp(node->name,(unsigned char *) "year",4))
{
cnode = node->children;
while(cnode != NULL)
{
if(!xmlStrncmp(cnode->name,(unsigned char *) "issue",5))
{
/* assign memory for the new issue */
issue = assignnew_iss(issue, &no_of_issues);
/* setup issue globals */
issue[no_of_issues]->no_of_sections = -1;
issue[no_of_issues]->date.year =
atoi( (const char *)(xmlStrsub(node->name,5,4)) );
tokenise_hyphons(
(char *) xmlStrsub(cnode->name,6,5),
&(issue[no_of_issues]->date.firstmonth),
&(issue[no_of_issues]->date.lastmonth));
/* parse the issue */
parseissue(file, cnode, issue[no_of_issues]);
}
cnode = cnode->next;
}
}
node = node->next;
}
xmlFreeDoc(file);
*iss_no = no_of_issues;
issuesort(issue, no_of_issues);
return issue;
}
int parseissue(xmlDocPtr file, xmlNodePtr node, iss * cur_issue)
/* parses issue from xml, saving in cur_issue structure */
{
strncpy(cur_issue->title, (char *) xmlGetProp(node, (unsigned char *)"title"), STR_MAX);
strncpy(cur_issue->preview_uri, (char *) xmlGetProp(node, (unsigned char *) "coverlink"), STR_MAX);
node = node->xmlChildrenNode;
while(node != NULL){
if(!xmlStrncmp(node->name, (unsigned char *) "section",7) ||
!xmlStrcmp(node->name, (const xmlChar *) "cover"))
{
/* assign memory for new section */
cur_issue->section =
assignnew_sec(cur_issue->section, &(cur_issue->no_of_sections));
/* setup section globals */
cur_issue->section[cur_issue->no_of_sections]->no_of_items = -1;
/* parse the section */
parsesection(file, node, cur_issue->section[cur_issue->no_of_sections]);
}
node = node->next;
}
return 0;
}
void parsesection(xmlDocPtr file, xmlNodePtr node, sec * cur_section)
/* parses section xml, filling cur_section structure */
{
it * cur_item = NULL;
char * pagenums = "";
strncpy(cur_section->uri, (char *) xmlGetProp(node, (unsigned char *) "pdflink"), STR_MAX);
strncpy(cur_section->title, (char *) xmlGetProp(node, (unsigned char *) "title"), STR_MAX);
if(!xmlStrcmp(node->name, (const xmlChar *) "cover"))
cur_section->number = 0;
else
cur_section->number = atoi( (const char *)(xmlStrsub(node->name,8,1)) );
node = node->xmlChildrenNode;
while(node != NULL)
{
if(!xmlStrcmp(node->name, (const xmlChar *) "item"))
{
if(xmlNodeListGetString(file, node->xmlChildrenNode, 1) != NULL)
/* ignore items without titles */
{
/* assign memory for new item */
cur_section->item =
assignnew_it( cur_section->item, &(cur_section->no_of_items));
cur_item = cur_section->item[cur_section->no_of_items];
/* parse item */
cur_item->title = (char *) xmlNodeListGetString(file, node->xmlChildrenNode, 1);
if(pagenums == (char *) xmlGetProp(node, (unsigned char *) "pages"))
tokenise_hyphons(pagenums, &(cur_item->firstpage), &(cur_item->lastpage));
else
{
cur_item->firstpage = 0;
cur_item->lastpage = 0;
}
}
}
node = node->next;
}
}
void tokenise_hyphons(char to_token[10], int * first, int * last)
/* splits string to_token, filling positions passed */
{
char token[10];
char * tmp;
tmp = token;
while(*to_token != '-' && *to_token)
{
*tmp = *to_token;
to_token++; tmp++;
}
*first = atoi(token);
if(!*to_token)
*last = *first;
else
{
to_token++; /* advance past '-' */
tmp = token; /* reset tmp */
while(*to_token)
{
*tmp = *to_token;
tmp++; to_token++;
}
*last = atoi(token);
}
}
int cur_identifiers(char * filepath, char * title, issdates * date)
/* parses xml file to ascertain current issue title and date */
{
xmlDocPtr file;
if((file = xmlReadFile(filepath, "ISO-8859-1", 0)) == NULL)
{
return 1;
}
xmlNodePtr node,cnode;
node = xmlDocGetRootElement(file);
if(node == NULL)
{
fprintf(stderr,"Error: xml file %s has no root element",filepath);
xmlFreeDoc(file);
return 1;
}
if(xmlStrcmp(node->name, (const xmlChar *) "issues"))
{
fprintf(stderr,"Document of the wrong type, root node is '%s' (expected 'issues').\n",(char *) node->name);
fprintf(stderr,"Continuing regardless...\n");
}
/* Now that's all sorted, let's do some work */
node = node->xmlChildrenNode;
xmlChar *temp;
while(node != NULL)
{
if(!xmlStrncmp(node->name,(unsigned char *) "year",4))
{
cnode = node->children;
while(cnode != NULL)
{
if(!xmlStrncmp(cnode->name,(unsigned char *) "issue",5))
{
temp = xmlGetProp(cnode, (unsigned char *) "current");
if(temp)
{
strncpy(title, (char *) xmlGetProp(cnode, (unsigned char *) "title"), STR_MAX);
date->year = atoi( (const char *)(xmlStrsub(node->name,5,4)) );
tokenise_hyphons((char *)xmlStrsub(cnode->name,6,5), &(date->firstmonth), &(date->lastmonth));
return 0;
}
}
cnode = cnode->next;
}
}
node = node->next;
}
return 0;
}
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