From 7d0bd29651f02f022412e5920abfa7b1228c68be Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Thu, 2 Oct 2008 21:27:19 +0200
Subject: [PATCH] Replace all outputs by an overridable call to `out'.

---
 UCW/Temple.pm | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/UCW/Temple.pm b/UCW/Temple.pm
index 572bc25..bafe91d 100644
--- a/UCW/Temple.pm
+++ b/UCW/Temple.pm
@@ -8,10 +8,20 @@ use strict;
 use warnings;
 no strict 'vars';
 
+require Exporter;
+our $VERSION = 1.0;
+our @ISA = qw(Exporter);
+our @EXPORT = qw(out);
+our @EXPORT_OK = qw();
+
 use IO::File;
 
 our @cond;
 
+sub out {
+	$T::out_func->(@_);
+}
+
 sub get_nested($$$) {
 	my ($r,$left,$right) = @_;
 	pos $$r = pos($$r)-1;
@@ -73,7 +83,7 @@ sub eval_func($$) {
 		# print "Cond stack: @cond\n";
 	} else {
 		my $res = eval_if_ok("$f($a)");
-		print $res if defined $res;
+		out $res if defined $res;
 	}
 }
 
@@ -82,16 +92,16 @@ sub parse_string($) {
 	pos $t = 0;
 	for(;;) {
 		if ($t =~ /\G([^\@]+)/cgs) {
-			print $1 if $cond[0] > 0;
+			out $1 if $cond[0] > 0;
 		} elsif ($t =~ /\G\@\s*\n/cgs) {
 			# @ at end of line is ignored and eats the end of line
 		} elsif ($t =~ /\G\@#[^\n]*\n/cgs) {
 			# a comment, which is ignored
 		} elsif ($t =~ /\G\@\@/cgs) {
-			print "\@";
+			out "\@";
 		} elsif ($t =~ /\G\@{/cgs) {
 			my $x = get_nested(\$t, "{", "}");
-			print eval_if_ok($x);
+			out eval_if_ok($x);
 		} elsif ($t =~ /\G\@\[/cgs) {
 			my $x = get_nested(\$t, '\[', '\]');
 			$x =~ s/^\[//;
@@ -104,7 +114,7 @@ sub parse_string($) {
 		} elsif ($t =~ /\G\@(\w+)([^\n]*)\n/cgs) {
 			eval_func($1, "($2)");
 		} elsif ($t =~ /\G\@(\$\w+)/cgs) {
-			print eval_if_ok($1);
+			out eval_if_ok($1);
 		} elsif ($t =~ /\G(\@[^\n]*)/cgs) {
 			die "Unknown control sequence $1";
 		} elsif ($t =~ /\G$/cgs) {
@@ -151,7 +161,10 @@ sub process_string($) {
 
 package T;
 
+import UCW::Temple;
+
 our $temp;
+our $out_func = sub { print @_; };
 
 sub include {
 	my $fn = shift @_;
-- 
2.39.5