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/*
* serialno.c
*
* Copyright (c) Chris Putnam 2005-2009
*
* Source code released under the GPL
*
*/
#include <string.h>
#include "serialno.h"
void
addsn( fields *info, char *buf, int level )
{
int ndigits=0, issn=0, isbn=0;
char *p = buf;
if ( !strncasecmp( p, "ISSN", 4 ) ) issn=1;
else if ( !strncasecmp( p, "ISBN", 4 ) ) isbn=1;
if ( !issn && !isbn ) {
/* a lot have semicolons between multiple ISBN's for
paperbacks and hardbacks with different numbers */
while ( *p && !(ndigits && (*p==';'||*p==':')) ) {
if ( ( *p>='0' && *p<='9' ) || *p=='x' || *p=='X' )
ndigits++;
p++;
}
if ( ndigits==8 ) issn = 1;
else if ( ndigits==10 || ndigits==13 ) isbn = 1;
}
if ( issn ) fields_add( info, "ISSN", buf, level );
else if ( isbn ) fields_add( info, "ISBN", buf, level );
else fields_add( info, "SERIALNUMBER", buf, level );
}
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