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williamc |
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#!/usr/local/bin/perl5
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#
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# url handler -> returns the location of the file
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#
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# returns file location - or crashes out
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# can pass a file name for the item to be stored as
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# if not then stores in a default cache.
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package urlhandler;
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require Exporter;
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@ISA = qw(Exporter);
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@EXPORT = qw(urlhandler);
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sub urlhandler($@) {
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my $origurl=shift;
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my $filename=shift;
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my $rest;
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my $type;
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my $url;
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my $version;
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chomp $origurl;
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# get our version info from the url (after last ??)
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( $url, $version) = split /\?\?/, $origurl;
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if ( $url=~/:/ ) {
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($type,$rest) = split /:/, $url;
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}
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else {
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$type='label';
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$rest=$url.":".$version;
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}
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my @urltypes = qw(label file cvs);
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foreach $ty ( @urltypes ) {
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do { return &$ty($rest, $filename); $supported='yes'; last; }
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if $type eq $ty;
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}
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if ( ! ( $supported=~/yes/ )) {
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print "urlhandler: Unsupported type $type\n";
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exit 1;
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}
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}
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sub label {
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my $label=shift;
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my $filename=shift;
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my $returnval="";
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open ( LOOKUP, "$ENV{SCRAM_LOOKUPDB}" )
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|| die "urlhandler: Unable to open DataBase $ENV{SCRAM_LOOKUPDB} $!";
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while ( <LOOKUP> ) {
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next if /^#/;
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if ( $_=~s/^$label\:// ) {
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$returnval = urlhandler($_,$filename);
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}
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}
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close LOOKUP;
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return $returnval;
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}
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sub file {
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use File::Copy;
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my $urlfile=shift;
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my $filename=shift;
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if ( -e "$urlfile" ) {
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if ( $filename=~/.*/ ) {
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copy ( $urlfile, $filename ) || return $urlfile;
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return $filename;
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}
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return $urlfile;
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}
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else {
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print "urlhandler: Unable to find file $urlfile : $!\n";
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exit 1;
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}
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}
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sub cvs {
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print "Coming soon\n";
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}
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sub cachefilename {
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use File::Basename;
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use AddDir;
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my $filebase=dirname($rest);
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$cache="/tmp/williamc/urlhandler$$";
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adddir($cache);
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$filename=$cache."/".$filebase;
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}
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