Faster and smaller implementation of sqlite3StrICmp().

FossilOrigin-Name: 7ac500fb5abfe1ad60f2ffdcc8fbe5ccc1c641bbeed53f00940e9ff78788e53d

diff --git a/manifest b/manifest
index 8b766074a8093ccda6ef7553a7f6be3bb8112622..b6c54ac76e8e1126da6062e936af4e6fca8e2098 100644 (file)
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Version\s3.28.0
-D 2019-04-16T19:49:53.412
+C Faster\sand\ssmaller\simplementation\sof\ssqlite3StrICmp().
+D 2019-04-17T11:34:44.568
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -588,7 +588,7 @@ F src/trigger.c bb034c08eca111e66a19cda045903a12547c1be2294b5570d794b869d9c44a73
 F src/update.c 0b973357d88092140531e07ff641139c26fb4380b0b9f5ed98c5f7691b4604d1
 F src/upsert.c 0dd81b40206841814d46942a7337786932475f085716042d0cb2fc7791bf8ca4
 F src/utf.c 2f0fac345c7660d5c5bd3df9e9d8d33d4c27f366bcfb09e07443064d751a0507
-F src/util.c e12939405e77906d06ab0b78c5f513dcd2b7cec2fbb553877b0abfece6067141
+F src/util.c 415fcd6ed9d3bb7cad27d411ae4b9320ea2a18e6750ceb03cbedf453373fec85
 F src/vacuum.c 72690ccb6877a88f8473a893cf9f6d7592236f3eebfebfa840b19c708acde574
 F src/vdbe.c 711ef421b3bb3db3b2476067b2dc3c71ef5844d9b1a723026578f89f6da621e8
 F src/vdbe.h 712bca562eaed1c25506b9faf9680bdc75fc42e2f4a1cd518d883fa79c7a4237
@@ -1818,10 +1818,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P af61a2fc45a0fa1277d7453779238b77de4c298a9f60714b7dc62ddca5874f80
-R 53d48b50e3fea254b204992be6aac766
-T +bgcolor * #d0c0ff
-T +sym-release *
-T +sym-version-3.28.0 *
+P 884b4b7e502b4e991677b53971277adfaf0a04a284f8e483e2553d0f83156b50
+R dcc66ec8a55d4cba7e12163fe5fbfbcf
 U drh
-Z 50f60d1cc2f388d0c03013011d963653
+Z 40a9f6f7fce76c8f72a2cb9229b22090

diff --git a/manifest.uuid b/manifest.uuid
index 09e555794497b61b2c72b96f6bae05312bd07b1a..c8e27168f574fe9db1328192aa698863de18b3cd 100644 (file)
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-884b4b7e502b4e991677b53971277adfaf0a04a284f8e483e2553d0f83156b50
\ No newline at end of file
+7ac500fb5abfe1ad60f2ffdcc8fbe5ccc1c641bbeed53f00940e9ff78788e53d
\ No newline at end of file

diff --git a/src/util.c b/src/util.c
index 4fa92f83c054aeee0fa11b3f318265d862f4e4e8..dad2dba3f08cb3a0a7c0cb898d39f746b149aaaa 100644 (file)
--- a/src/util.c
+++ b/src/util.c
@@ -322,12 +322,18 @@ int sqlite3_stricmp(const char *zLeft, const char *zRight){
 }
 int sqlite3StrICmp(const char *zLeft, const char *zRight){
   unsigned char *a, *b;
-  int c;
+  int c, x;
   a = (unsigned char *)zLeft;
   b = (unsigned char *)zRight;
   for(;;){
-    c = (int)UpperToLower[*a] - (int)UpperToLower[*b];
-    if( c || *a==0 ) break;
+    c = *a;
+    x = *b;
+    if( c==x ){
+      if( c==0 ) break;
+    }else{
+      c = (int)UpperToLower[c] - (int)UpperToLower[x];
+      if( c ) break;
+    }
     a++;
     b++;
   }