From 51410920db607feea6e164ff0a0612d12a07fc04 Mon Sep 17 00:00:00 2001
From: Per Hedbor <ph@opera.com>
Date: Tue, 5 Mar 2002 16:09:15 +0100
Subject: [PATCH] Optimized file_equal for some (perhaps not all that common)
cases.
Rev: lib/modules/Stdio.pmod/module.pmod:1.138
---
lib/modules/Stdio.pmod/module.pmod | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/lib/modules/Stdio.pmod/module.pmod b/lib/modules/Stdio.pmod/module.pmod
index 01fd2ccb56..bba4a0c5ea 100644
--- a/lib/modules/Stdio.pmod/module.pmod
+++ b/lib/modules/Stdio.pmod/module.pmod
@@ -1,4 +1,4 @@
-// $Id: module.pmod,v 1.137 2002/03/05 14:17:23 mast Exp $
+// $Id: module.pmod,v 1.138 2002/03/05 15:09:15 per-bash Exp $
#pike __REAL_VERSION__
inherit files;
@@ -1776,7 +1776,23 @@ int file_equal (string file_1, string file_2)
//! sort of I/O error.
{
File f1 = File(), f2 = File();
+
+ if( file_1 == file_2 )
+ return 1;
+
if (!f1->open (file_1, "r") || !f2->open (file_2, "r")) return 0;
+
+
+ // Some optimizations.
+ Stat s1 = f1->stat(), s2 = f2->stat();
+
+ if( s1->size != s2->size )
+ return 0;
+
+ // Detect sym- or hardlinks to the same file.
+ if( (s1->dev == s2->dev) && (s1->ino == s2->ino) )
+ return 1;
+
function(int,int|void:string) f1_read = f1->read, f2_read = f2->read;
string d1, d2;
do {
--
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