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rework the VDBE engine. NULL is now distinct from "" (CVS 49)

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FossilOrigin-Name: 6ea5cebf05562de00d2cf0b9e2aac5f3857638ee
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drh
2000-06-04 12:58:36 +00:00
parent 32aa77ed6e
commit c61053b771
11 changed files with 568 additions and 341 deletions
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4
src/util.c
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@@ -26,7 +26,7 @@
** This file contains functions for allocating memory, comparing
** strings, and stuff like that.
**
** $Id: util.c,v 1.9 2000/06/02 13:28:00 drh Exp $
** $Id: util.c,v 1.10 2000/06/04 12:58:38 drh Exp $
*/
#include "sqliteInt.h"
#include <stdarg.h>
@@ -632,6 +632,7 @@ int sqliteGlobCompare(const char *zPattern, const char *zString){
}else{
while( (c2 = *zString)!=0 ){
while( c2 != 0 && c2 != c ){ c2 = *++zString; }
if( c2==0 ) return 0;
if( sqliteGlobCompare(&zPattern[1],zString) ) return 1;
zString++;
}
@@ -699,6 +700,7 @@ sqliteLikeCompare(const unsigned char *zPattern, const unsigned char *zString){
}else{
while( (c2 = UpperToLower[*zString])!=0 ){
while( c2 != 0 && c2 != c ){ c2 = UpperToLower[*++zString]; }
if( c2==0 ) return 0;
if( sqliteLikeCompare(&zPattern[1],zString) ) return 1;
zString++;
}