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Smaller and hopefully faster routine for converting blob literals into binary. (CVS 4967)

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FossilOrigin-Name: 92d49499ee3371db64267c7e2ba72a5e12ea76f3
This commit is contained in:
drh
2008-04-04 15:12:21 +00:00
parent 1c22f2ddfb
commit 335d29d208
4 changed files with 44 additions and 10 deletions
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13
src/util.c
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@@ -14,7 +14,7 @@
** This file contains functions for allocating memory, comparing
** strings, and stuff like that.
**
** $Id: util.c,v 1.217 2008/03/19 13:03:34 drh Exp $
** $Id: util.c,v 1.218 2008/04/04 15:12:22 drh Exp $
*/
#include "sqliteInt.h"
#include <stdarg.h>
@@ -597,8 +597,18 @@ void sqlite3Put4byte(unsigned char *p, u32 v){
#if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC)
/*
** Translate a single byte of Hex into an integer.
** This routinen only works if h really is a valid hexadecimal
** character: 0..9a..fA..F
*/
static int hexToInt(int h){
#if !defined(SQLITE_EBCDIC)
int x = h - '0';
if( x>9 ){
x = (h - 'A' + 10) & 0xf;
}
assert( x>=0 && x<=15 );
return x;
#else
if( h>='0' && h<='9' ){
return h - '0';
}else if( h>='a' && h<='f' ){
@@ -607,6 +617,7 @@ static int hexToInt(int h){
assert( h>='A' && h<='F' );
return h - 'A' + 10;
}
#endif
}
#endif /* !SQLITE_OMIT_BLOB_LITERAL || SQLITE_HAS_CODEC */