Fix typo in -l*perl* pattern

[p5sagit/p5-mst-13.2.git] / lib / File / Compare.pm

diff --git a/lib/File/Compare.pm b/lib/File/Compare.pm
index 12d97e7..a76eb1f 100644 (file)
--- a/lib/File/Compare.pm
+++ b/lib/File/Compare.pm
@@ -1,19 +1,18 @@
 package File::Compare;
 
+use strict;
+use vars qw($VERSION @ISA @EXPORT @EXPORT_OK $Too_Big *FROM *TO);
+
 require Exporter;
 use Carp;
 use UNIVERSAL qw(isa);
 
-@ISA=qw(Exporter);
-@EXPORT=qw(compare);
-@EXPORT_OK=qw(compare cmp);
-
-$File::Compare::VERSION = '1.0';
-$File::Compare::Too_Big = 1024 * 1024 * 2;
+$VERSION = '1.1001';
+@ISA = qw(Exporter);
+@EXPORT = qw(compare);
+@EXPORT_OK = qw(cmp);
 
-
-use strict;
-use vars qw($\ *FROM *TO);
+$Too_Big = 1024 * 1024 * 2;
 
 sub VERSION {
     # Version of File::Compare
@@ -28,7 +27,7 @@ sub compare {
     my $to = shift;
     my $closefrom=0;
     my $closeto=0;
-    my ($size, $status, $fr, $tr, $fbuf, $tbuf);
+    my ($size, $fromsize, $status, $fr, $tr, $fbuf, $tbuf);
     local(*FROM, *TO);
     local($\) = '';
 
@@ -43,6 +42,7 @@ sub compare {
        open(FROM,"<$from") or goto fail_open1;
        binmode FROM;
        $closefrom = 1;
+       $fromsize = -s FROM;
     }
 
     if (ref($to) && (isa($to,'GLOB') || isa($to,'IO::Handle'))) {
@@ -55,13 +55,18 @@ sub compare {
        $closeto = 1;
     }
 
+    if ($closefrom && $closeto) {
+       # If both are opened files we know they differ if their size differ
+       goto fail_inner if $fromsize != -s TO;
+    }
+
     if (@_) {
        $size = shift(@_) + 0;
        croak("Bad buffer size for compare: $size\n") unless ($size > 0);
     } else {
-       $size = -s FROM;
+       $size = $fromsize;
        $size = 1024 if ($size < 512);
-       $size = $File::Compare::Too_Big if ($size > $File::Compare::Too_Big);
+       $size = $Too_Big if ($size > $Too_Big);
     }
 
     $fbuf = '';
@@ -98,3 +103,40 @@ sub compare {
 
 *cmp = \&compare;
 
+1;
+
+__END__
+
+=head1 NAME
+
+File::Compare - Compare files or filehandles
+
+=head1 SYNOPSIS
+
+       use File::Compare;
+
+       if (compare("file1","file2") == 0) {
+           print "They're equal\n";
+       }
+
+=head1 DESCRIPTION
+
+The File::Compare::compare function compares the contents of two
+sources, each of which can be a file or a file handle.  It is exported
+from File::Compare by default.
+
+File::Compare::cmp is a synonym for File::Compare::compare.  It is
+exported from File::Compare only by request.
+
+=head1 RETURN
+
+File::Compare::compare return 0 if the files are equal, 1 if the
+files are unequal, or -1 if an error was encountered.
+
+=head1 AUTHOR
+
+File::Compare was written by Nick Ing-Simmons.
+Its original documentation was written by Chip Salzenberg.
+
+=cut
+