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/* Copyright (C) 2000-2006 Lavtech.com corp. All rights reserved.
This program 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; either version 2 of the License, or
(at your option) any later version.
This program 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 program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "udm_config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include "udm_common.h"
#include "udm_spell.h"
#include "udm_hrefs.h"
#include "udm_utils.h"
#include "udm_xmalloc.h"
#include "udm_sgml.h"
#include "udm_url.h"
#include "udm_vars.h"
/* Max URLs in cache: 4K URLs will use about 200K of RAM */
/* This should be a configurable parameter but we'll use 4K now */
#define HSIZE 256 /* Length of buffer increment TUNE */
#define RESORT_HREFS 256 /* Max length of unsorted part TUNE */
UDM_HREF *UdmHrefInit(UDM_HREF * H)
{
bzero((void*)H, sizeof(*H));
return(H);
}
void UdmHrefFree(UDM_HREF * H)
{
if (H->url)
UdmFree(H->url);
UdmVarListFree(&H->Vars);
}
/* Function to sort URLs in alphabetic order */
static int cmphrefs(const void * v1, const void * v2)
{
return(strcmp(((const UDM_HREF*)v1)->url,((const UDM_HREF*)v2)->url));
}
__C_LINK int __UDMCALL UdmHrefListAdd(UDM_HREFLIST * HrefList,UDM_HREF * Href)
{
int l,r,c,res;
size_t len;
char *ehref;
/* Don't add an empty link */
if (!(len= strlen(Href->url)) ||
!(ehref = (char*)UdmMalloc(3*len + 1)))
return 0;
UdmURLCanonize(Href->url, ehref, 3*len+1);
UdmSGMLUnescape(ehref);
/* Find current URL in sorted part of list */
l=0;r=HrefList->shrefs-1;
while(l<=r)
{
c=(l+r)/2;
if(!(res=strcmp(HrefList->Href[c].url,ehref)))
{
HrefList->Href[c].stored = Href->stored;
HrefList->Href[c].referrer = Href->referrer;
HrefList->Href[c].hops = Href->hops;
HrefList->Href[c].method = Href->method;
HrefList->Href[c].stored = Href->stored;
HrefList->Href[c].site_id = Href->site_id;
HrefList->Href[c].server_id = Href->server_id;
HrefList->Href[c].rec_id = Href->rec_id;
HrefList->Href[c].max_doc_per_site = Href->max_doc_per_site;
HrefList->Href[c].collect_links= Href->collect_links;
UdmVarListFree(&HrefList->Href[c].Vars);
UdmVarListInit(&HrefList->Href[c].Vars);
UdmVarListReplaceLst(&HrefList->Href[c].Vars, &Href->Vars, NULL, "*");
UDM_FREE(ehref);
return(0);
}
if(res<0)
l=c+1;
else
r=c-1;
}
/* Find in unsorted part */
for(c= HrefList->shrefs; c < HrefList->nhrefs; c++)
{
if(!strcmp(HrefList->Href[c].url,ehref))
{
HrefList->Href[c].stored = Href->stored;
HrefList->Href[c].referrer = Href->referrer;
HrefList->Href[c].hops = Href->hops;
HrefList->Href[c].method = Href->method;
HrefList->Href[c].stored = Href->stored;
HrefList->Href[c].site_id = Href->site_id;
HrefList->Href[c].server_id = Href->server_id;
HrefList->Href[c].rec_id = Href->rec_id;
HrefList->Href[c].max_doc_per_site = Href->max_doc_per_site;
HrefList->Href[c].collect_links= Href->collect_links;
UdmVarListFree(&HrefList->Href[c].Vars);
UdmVarListInit(&HrefList->Href[c].Vars);
UdmVarListReplaceLst(&HrefList->Href[c].Vars, &Href->Vars, NULL, "*");
UDM_FREE(ehref);
return(0);
}
}
if(HrefList->nhrefs>=HrefList->mhrefs)
{
HrefList->mhrefs+=HSIZE;
HrefList->Href=(UDM_HREF *)UdmRealloc(HrefList->Href,HrefList->mhrefs*sizeof(UDM_HREF));
}
HrefList->Href[HrefList->nhrefs].url = (char*)UdmStrdup(ehref);
HrefList->Href[HrefList->nhrefs].referrer=Href->referrer;
HrefList->Href[HrefList->nhrefs].hops=Href->hops;
HrefList->Href[HrefList->nhrefs].method=Href->method;
HrefList->Href[HrefList->nhrefs].stored=Href->stored;
HrefList->Href[HrefList->nhrefs].site_id = Href->site_id;
HrefList->Href[HrefList->nhrefs].server_id = Href->server_id;
HrefList->Href[HrefList->nhrefs].rec_id = Href->rec_id;
HrefList->Href[HrefList->nhrefs].max_doc_per_site= Href->max_doc_per_site;
HrefList->Href[HrefList->nhrefs].collect_links= Href->collect_links;
UdmVarListInit(&HrefList->Href[HrefList->nhrefs].Vars);
UdmVarListReplaceLst(&HrefList->Href[HrefList->nhrefs].Vars,
&Href->Vars, NULL, "*");
HrefList->nhrefs++;
/* Sort unsorted part */
if((HrefList->nhrefs-HrefList->shrefs)>RESORT_HREFS)
{
UdmSort(HrefList->Href,HrefList->nhrefs,sizeof(UDM_HREF),cmphrefs);
/* Remember count of sorted URLs */
HrefList->shrefs=HrefList->nhrefs;
/* Count of stored URLs became 0 */
HrefList->dhrefs=0;
}
UDM_FREE(ehref);
return(1);
}
extern __C_LINK void __UDMCALL UdmHrefListFree(UDM_HREFLIST * HrefList)
{
size_t i;
for(i=0;i<HrefList->nhrefs;i++)
UdmHrefFree(&HrefList->Href[i]);
UDM_FREE(HrefList->Href);
bzero((void*)HrefList, sizeof(*HrefList));
}
__C_LINK UDM_HREFLIST * __UDMCALL UdmHrefListInit(UDM_HREFLIST * Hrefs)
{
bzero((void*)Hrefs, sizeof(*Hrefs));
return(Hrefs);
}
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