1 files changed, 37 insertions, 0 deletions
diff --git a/lib/Carp.pm b/lib/Carp.pm
new file mode 100644
index 0000000000..5daba5c289
--- /dev/null
+++ b/lib/Carp.pm
@@ -0,0 +1,37 @@
+package Carp;
+
+# This package implements handy routines for modules that wish to throw
+# exceptions outside of the current package.
+
+require Exporter;
+@ISA = Exporter;
+@EXPORT = qw(confess croak carp);
+
+sub longmess {
+    my $error = shift;
+    my $mess = "";
+    my $i = 2;
+    my ($pack,$file,$line,$sub);
+    while (($pack,$file,$line,$sub) = caller($i++)) {
+	$mess .= "\t$sub " if $error eq "called";
+	$mess .= "$error at $file line $line\n";
+	$error = "called";
+    }
+    $mess || $error;
+}
+
+sub shortmess {
+    my $error = shift;
+    my ($curpack) = caller(1);
+    my $i = 2;
+    my ($pack,$file,$line,$sub);
+    while (($pack,$file,$line,$sub) = caller($i++)) {
+	return "$error at $file line $line\n" if $pack ne $curpack;
+    }
+    longmess $error;
+}
+
+sub confess { die longmess @_; }
+sub croak { die shortmess @_; }
+sub carp { warn shortmess @_; }
+