From: Alex Elder <aelder@sgi.com>
To: xfs@oss.sgi.com
Subject: [PATCH 5/6] xfsprogs: replace repeated blocks with a loop
Date: Wed, 06 Oct 2010 13:49:41 -0500 [thread overview]
Message-ID: <1286390981.1951.367.camel@doink> (raw)
Replace a repeated block of code with an equivalent loop.
Signed-off-by: Alex Elder <aelder@sgi.com>
---
db/metadump.c | 43 +++++++++----------------------------------
1 file changed, 9 insertions(+), 34 deletions(-)
Index: b/db/metadump.c
===================================================================
--- a/db/metadump.c
+++ b/db/metadump.c
@@ -471,41 +471,16 @@ generate_obfuscated_name(
newhash = rol32(newhash, 3) ^ hash;
high_bit = 0;
+ for (i = 5; i > 0; i--) {
+ int shift = (i - 1) * 7;
- newp[namelen - 5] = (newhash >> 28) & 0x7f ^ high_bit;
- if (is_invalid_char(newp[namelen - 5])) {
- newp[namelen - 5] ^= 1;
- high_bit = 0x80;
- } else
- high_bit = 0;
-
- newp[namelen - 4] = (newhash >> 21) & 0x7f ^ high_bit;
- if (is_invalid_char(newp[namelen - 4])) {
- newp[namelen - 4] ^= 1;
- high_bit = 0x80;
- } else
- high_bit = 0;
-
- newp[namelen - 3] = (newhash >> 14) & 0x7f ^ high_bit;
- if (is_invalid_char(newp[namelen - 3])) {
- newp[namelen - 3] ^= 1;
- high_bit = 0x80;
- } else
- high_bit = 0;
-
- newp[namelen - 2] = (newhash >> 7) & 0x7f ^ high_bit;
- if (is_invalid_char(newp[namelen - 2])) {
- newp[namelen - 2] ^= 1;
- high_bit = 0x80;
- } else
- high_bit = 0;
-
- newp[namelen - 1] = (newhash >> 0) & 0x7f ^ high_bit;
- if (is_invalid_char(newp[namelen - 1])) {
- newp[namelen - 1] ^= 1;
- high_bit = 0x80;
- } else
- high_bit = 0;
+ newp[namelen - i] = (newhash >> shift) & 0x7f ^ high_bit;
+ if (is_invalid_char(newp[namelen - i])) {
+ newp[namelen - i] ^= 1;
+ high_bit = 0x80;
+ } else
+ high_bit = 0;
+ }
if (high_bit) {
newp[namelen - 5] ^= 0x10;
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reply other threads:[~2010-10-06 18:48 UTC|newest]
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