small

README.md

@@ -35,7 +35,7 @@ Each file is compressed 1000 times.
 **https://github.com/guzba/zippy** results:
 File | Time | Size Reduction
 --- | --- | ---:
-alice29.txt | 3.8033s | 63.32%
+alice29.txt | 3.7915s | 63.32%
 urls.10K | 19.4417s | 67.49%
 rfctest3.gold | 0.7493s | 70.73%
 randtest3.gold | 0.1258s | 0%

src/zippy/common.nim

@@ -228,19 +228,17 @@ func findMatchLength*(src: seq[uint8], s1, s2, limit: int): int {.inline.} =
     s2 = s2
   while s2 <= limit - 8:
     let x = read64(src, s2) xor read64(src, s1 + result)
-    if x == 0:
-      inc(s2, 8)
-      inc(result, 8)
-    else:
+    if x != 0:
       let matchingBits = countTrailingZeroBits(x)
       inc(result, matchingBits shr 3)
       return
+    inc(s2, 8)
+    inc(result, 8)
   while s2 < limit:
-    if src[s2] == src[s1 + result]:
-      inc s2
-      inc result
-    else:
+    if src[s2] != src[s1 + result]:
       return
+    inc s2
+    inc result
 
 func adler32*(data: seq[uint8]): uint32 =
   ## See https://github.com/madler/zlib/blob/master/adler32.c