Enhance user function API to support association of meta-data with constant

arguments and the specification of text encoding preference. The LIKE
operator takes advantage of both. (CVS 1534)

FossilOrigin-Name: 92337d8f79b9754cd61c73e7db2e792a1f482f50

1 files changed, 1 insertions, 52 deletions

diff --git a/src/util.c b/src/util.c
index 00f20f6dc..637782d38 100644
--- a/src/util.c
+++ b/src/util.c
@@ -14,7 +14,7 @@
 ** This file contains functions for allocating memory, comparing
 ** strings, and stuff like that.
 **
-** $Id: util.c,v 1.96 2004/06/02 00:41:10 drh Exp $
+** $Id: util.c,v 1.97 2004/06/06 09:44:05 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #include <stdarg.h>
@@ -1056,57 +1056,6 @@ sqlite3GlobCompare(const unsigned char *zPattern, const unsigned char *zString){
 }
 
 /*
-** Compare two UTF-8 strings for equality using the "LIKE" operator of
-** SQL.  The '%' character matches any sequence of 0 or more
-** characters and '_' matches any single character.  Case is
-** not significant.
-**
-** This routine is just an adaptation of the sqlite3GlobCompare()
-** routine above.
-*/
-int 
-sqlite3LikeCompare(const unsigned char *zPattern, const unsigned char *zString){
-  register int c;
-  int c2;
-
-  while( (c = UpperToLower[*zPattern])!=0 ){
-    switch( c ){
-      case '%': {
-        while( (c=zPattern[1]) == '%' || c == '_' ){
-          if( c=='_' ){
-            if( *zString==0 ) return 0;
-            sqliteNextChar(zString);
-          }
-          zPattern++;
-        }
-        if( c==0 ) return 1;
-        c = UpperToLower[c];
-        while( (c2=UpperToLower[*zString])!=0 ){
-          while( c2 != 0 && c2 != c ){ c2 = UpperToLower[*++zString]; }
-          if( c2==0 ) return 0;
-          if( sqlite3LikeCompare(&zPattern[1],zString) ) return 1;
-          sqliteNextChar(zString);
-        }
-        return 0;
-      }
-      case '_': {
-        if( *zString==0 ) return 0;
-        sqliteNextChar(zString);
-        zPattern++;
-        break;
-      }
-      default: {
-        if( c != UpperToLower[*zString] ) return 0;
-        zPattern++;
-        zString++;
-        break;
-      }
-    }
-  }
-  return *zString==0;
-}
-
-/*
 ** Change the sqlite.magic from SQLITE_MAGIC_OPEN to SQLITE_MAGIC_BUSY.
 ** Return an error (non-zero) if the magic was not SQLITE_MAGIC_OPEN
 ** when this routine is called.