--- trunk/parse_format.pm	2003/07/04 20:11:48	62
+++ branches/humanistika/parse_format.pm	2004/03/12 16:02:06	267
@@ -3,7 +3,6 @@
 # parse_format(...)
 #
 
-
 sub parse_format {
 	my $type = shift || die "parset_format must be called with type!";
 	my $format = shift || die "parse_format must be called with format!";
@@ -16,6 +15,8 @@
 		return parse_excel_format($format,$row,$i,$codepage);
 	} elsif ($type eq "marc") {
 		return parse_iso_format($format,$row,$i,$codepage,'marc_sf');
+	} elsif ($type eq "feed") {
+		return parse_feed_format($format,$row,$i,$codepage);
 	}
 }
 
@@ -35,61 +36,152 @@
 	my $out;
 	my $out_swish;
 
-	my $prefix = "";
-	if ($format =~ s/^([^\d]+)//) {
-		$prefix = $1;
-	}
-
 	my $display;
 	my $swish;
 
 	sub cnv_cp {
-		my $tmp = shift;
+		my $codepage = shift;
+		my $tmp = shift || return;
 		if ($codepage) {
-			$tmp = $codepage->convert($tmp) || print STDERR "$1$2 = '$tmp' can't convert";
+			$tmp = $codepage->convert($tmp) || print STDERR "iso: '$tmp' can't convert\n";
 		}
 		return $tmp;
 	}
 
-	while ($format) {
-#print STDERR "\n#### $format";
-		# this is EBSCO special to support numeric subfield in
-		# form of 856#3
-		if ($format =~ s/^(\d\d\d)#*(\w?)//) {
-			my $tmp = get_sf($row,$1,$2,$i);
-			if ($tmp) {
-				$display .= $prefix.cnv_cp($tmp);
-				$swish .= $tmp." ";
-#print STDERR " == $tmp";
+	# if format doesn't exits, store it in cache
+	if (! defined($cache->{format}->{$format})) {
+#		print STDERR "parsing format for '$format'\n";
+		my @fmt;
+
+		my $f = $format;
+
+		my $eval;
+		$eval = $1 if ($f =~ s/^eval{([^}]+)}//);
+
+		if ($f =~ s/^([^\d]+)//) {
+			if ($f) {	# there is more to parse
+				push @fmt,$1;
+			} else {
+				@fmt = ('',$1,undef,'');
+#print STDERR "just one field: $1\n";
 			}
-			$prefix = "";
-		# this might be our local scpeciality -- fields 10 and 11
-		# (as opposed to 010 and 011) so they are strictly listed
-		# here
-		} elsif ($format =~ s/^(1[01])//) {
-			my $tmp = get_sf($row,$1,undef,$i);
-			if ($tmp) {
-				$display .= $prefix.cnv_cp($tmp);
+		} else {
+			push @fmt,'';
+		}
+
+		while ($f) {
+#	print STDERR "\n#### $f";
+			# this is EBSCO special to support numeric subfield in
+			# form of 856#3
+			if ($f =~ s/^(\d\d\d)#*(\w?)//) {
+				push @fmt,$1;
+				if ($2) {
+					push @fmt,$2;
+				} else {
+					push @fmt,undef;
+				}
+			# this might be our local scpeciality -- fields 10 and 11
+			# (as opposed to 010 and 011) so they are strictly listed
+			# here
+			} elsif ($f =~ s/^(1[01]\w?)//) {
+				push @fmt,$1;
+				push @fmt,undef;
+			} elsif ($f =~ s/^mfn//i) {
+				push @fmt,'mfn';
+				push @fmt,'';
+			} elsif ($f =~ s/^([^\d]+)(\d{0,3})/$2/) {
+				# still prefix?
+				if ($#fmt == 0) {
+					$fmt[0] .= $1;
+				} else {
+					push @fmt,$1;
+				}
+			} elsif ($f =~ s/^([^\d]+\d{0,2})//) {
+				if ($#fmt == 0) {
+					$fmt[0] .= $1;
+				} else {
+					push @fmt,$1;
+				}
+			} elsif ($f =~ s/^(\d{1,2})//) {
+				if ($#fmt == 0) {
+					$fmt[0] .= $1;
+				} else {
+					push @fmt,$1;
+				}
+			} else {
+				print STDERR "unparsed format: $f\n";
+				$f = "";
+			}
+		}
+		push @fmt,'' if ($#fmt % 3 != 0);	# add empty suffix
+
+		$cache->{format_eval}->{$format} = $eval; # store eval string (if any)
+
+		$cache->{format}->{$format} = \@fmt;
+		
+#		print STDERR "storing format for '$format': [",join("|",@fmt),"]\n";
+#		print STDERR "storing format for '$format':",Dumper(@fmt),"\n";
+#		print STDERR Dumper($cache->{format}->{$format});
+	}
+
+	# now produce actual record
+	my $tmp = $cache->{format}->{$format} || die "no format cache for '$format'";
+	my @fmt = @{$tmp};
+#	print STDERR "using format for '$format':",Dumper(@fmt),"\n";
+#	print STDERR "tmp ",Dumper($tmp);
+#	print STDERR "cache: ",Dumper($cache->{format}->{$format});
+
+	# prefix
+	my $prefix = shift @fmt;
+	my $sufix;
+	while($#fmt > 1) {
+		my $f = shift @fmt || die "BUG: field name can't be empty!";
+		my $sf = shift @fmt;
+
+		if ($f eq 'mfn' && $i == 0) {
+			$display .= $sufix if ($display);
+			$display .= $row->{mfn};
+		} else {
+			my $val = &$func($row,$f,$sf,$i);
+			if ($val) {
+#				print STDERR "val: $val\n";
+				my $tmp = cnv_cp($codepage,$val);
+				if ($display) {
+					$display .= $sufix.$tmp;
+				} else {
+					$display = $tmp;
+				}
 				$swish .= $tmp." ";
 			}
-			$prefix = "";
-		} elsif ($format =~ s/^mfn//i) {
-			$display .= $prefix . $row->{mfn};
-			$prefix = "";
-		} elsif ($format =~ s/^([^\d]+)(\d{0,3})/$2/) {
-			$prefix .= $1 if ($display);
-		} elsif ($format =~ s/^([^\d]+\d{0,2})//) {
-			$prefix .= $1 if ($display);
-		} elsif ($format =~ s/^(\d{1,2})//) {
-			$prefix .= $1 if ($display);
+		}
+		$sufix = shift @fmt;
+	}
+	$display = $prefix.$display.$sufix if ($display);
+
+	my $eval = $cache->{format_eval}->{$format};
+	if ($eval) {
+		sub fld2str {
+			my ($func,$row,$f,$sf,$i) = @_;
+#print STDERR "## in fld2str\n";
+			my $tmp = &$func($row,$f,$sf,$i) || '';
+			return "'$tmp'";
+		}
+
+		$eval =~ s/v(\d+)\^(\w*)/fld2str($func,$row,$1,$2,$i)/eg;
+#print STDERR "## eval: $eval\n";
+		if (eval "$eval") {
+			return ($swish,$display);
 		} else {
-			print STDERR "unparsed format: $format\n";
-			$prefix .= $format;
-			$format = "";
+			return (undef,undef);
 		}
 	}
-	# add suffix
-	$display .= $prefix if ($display);
+
+	if (@fmt) {
+		print STDERR "format left unused: [",join("|",@fmt),"]\n";
+		print STDERR "format: [",join("|",@{$tmp}),"]\n";
+	}
+
+#	print STDERR "format: {",$format || '',"} display: {",$display || '',"} swish: {",$swish || '',"}\n";
 
 	return ($swish,$display);
 }
@@ -102,6 +194,8 @@
 	my $i = shift;
 	my $codepage = shift;
 
+	return if ($i > 0);	# Excel doesn't support repeatable fields
+
 	my $out;
 	my $out_swish;
 
@@ -142,4 +236,58 @@
 	return ($swish,$display);
 }
 
+#-------------------------------------------------------------
+
+sub parse_feed_format {
+	my $format = shift;
+	my $data = shift;
+	my $i = shift;
+	my $codepage = shift;
+
+	# XXX feed doesn't support repeatable fields, but they really
+	# should, This is a bug. It should be fixed!
+	return if ($i > 0);
+
+	my $out;
+	my $out_swish;
+
+	my $prefix = "";
+	if ($format =~ s/^([^\d\|]{1,3})//) {
+		$prefix = $1;
+	}
+
+	my $display;
+	my $swish;
+
+	while ($format && length($format) > 0) {
+#print STDERR "\n#### $format #";
+		if ($format =~ s/^\|(\d+)\|//) {
+#print STDERR "--$1-> $format -[",length($format),"] ";
+			if ($data->{$1}) {
+				my $tmp = $data->{$1};
+				if ($codepage) {
+					$tmp = $codepage->convert($tmp) || warn "feed: $1 '$tmp' can't convert\n";
+				}
+				$display .= $prefix . $tmp;
+				$swish .= $tmp." ";
+#print STDERR " == $tmp";
+			}
+			$prefix = "";
+		} elsif ($format =~ s/^([^\d\|]+)(\|\d+\|)/$2/) {
+			$prefix .= $1 if ($display);
+		} else {
+			print STDERR "unparsed format: $format\n";
+			$prefix .= $format;
+			$format = "";
+		}
+#print STDERR " display: $display swish: $swish [format: $format]";
+	}
+	# add suffix
+	$display .= $prefix if ($display);
+
+	return ($swish,$display);
+}
+
+#-------------------------------------------------------------
+
 1;