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Overview
Comment:Smaller and hopefully faster routine for converting blob literals into binary. (CVS 4967)
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SHA1: 92d49499ee3371db64267c7e2ba72a5e12ea76f3
User & Date: drh 2008-04-04 15:12:22
Context
2008-04-05
18:41
Add the sqlite3PutVarint32 routine as an alternative to sqlite3PutVarint. Gives 0.5% speed increase. (CVS 4968) (check-in: b2517a7d user: drh tags: trunk)
2008-04-04
15:12
Smaller and hopefully faster routine for converting blob literals into binary. (CVS 4967) (check-in: 92d49499 user: drh tags: trunk)
12:21
Fix the output labels on the tests in malloc9. (CVS 4966) (check-in: 9987a7b1 user: drh tags: trunk)
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/util.c. 

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**
*************************************************************************
** Utility functions used throughout sqlite.
**
** 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 $
*/
#include "sqliteInt.h"
#include <stdarg.h>
#include <ctype.h>


/*
................................................................................
}



#if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC)
/*
** Translate a single byte of Hex into an integer.


*/
static int hexToInt(int h){








  if( h>='0' && h<='9' ){
    return h - '0';
  }else if( h>='a' && h<='f' ){
    return h - 'a' + 10;
  }else{
    assert( h>='A' && h<='F' );
    return h - 'A' + 10;
  }

}
#endif /* !SQLITE_OMIT_BLOB_LITERAL || SQLITE_HAS_CODEC */

#if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC)
/*
** Convert a BLOB literal of the form "x'hhhhhh'" into its binary
** value.  Return a pointer to its binary value.  Space to hold the








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**
*************************************************************************
** Utility functions used throughout sqlite.
**
** This file contains functions for allocating memory, comparing
** strings, and stuff like that.
**
** $Id: util.c,v 1.218 2008/04/04 15:12:22 drh Exp $
*/
#include "sqliteInt.h"
#include <stdarg.h>
#include <ctype.h>


/*
................................................................................
}



#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' ){
    return h - 'a' + 10;
  }else{
    assert( h>='A' && h<='F' );
    return h - 'A' + 10;
  }
#endif
}
#endif /* !SQLITE_OMIT_BLOB_LITERAL || SQLITE_HAS_CODEC */

#if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC)
/*
** Convert a BLOB literal of the form "x'hhhhhh'" into its binary
** value.  Return a pointer to its binary value.  Space to hold the

Changes to test/blob.test. 

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#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.
#
# $Id: blob.test,v 1.6 2008/01/22 23:37:10 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

ifcapable {!bloblit} {
  finish_test
  return
................................................................................
  set blob [execsql {SELECT x'';}]
  bin_to_hex [lindex $blob 0]
} {}
do_test blob-1.3 {
  set blob [execsql {SELECT x'abcdEF12';}]
  bin_to_hex [lindex $blob 0]
} {ABCDEF12}





# Try some syntax errors in blob literals.
do_test blob-1.4 {
  catchsql {SELECT X'01020k304', 100}
} {1 {unrecognized token: "X'01020k304'"}}
do_test blob-1.5 {
  catchsql {SELECT X'01020, 100}
................................................................................
} {1 {unrecognized token: "X'01020, 100"}}
do_test blob-1.6 {
  catchsql {SELECT X'01020 100'}
} {1 {unrecognized token: "X'01020 100'"}}
do_test blob-1.7 {
  catchsql {SELECT X'01001'}
} {1 {unrecognized token: "X'01001'"}}




















# Insert a blob into a table and retrieve it.
do_test blob-2.0 {
  execsql {
    CREATE TABLE t1(a BLOB, b BLOB);
    INSERT INTO t1 VALUES(X'123456', x'7890ab');
    INSERT INTO t1 VALUES(X'CDEF12', x'345678');








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#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.
#
# $Id: blob.test,v 1.7 2008/04/04 15:12:22 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

ifcapable {!bloblit} {
  finish_test
  return
................................................................................
  set blob [execsql {SELECT x'';}]
  bin_to_hex [lindex $blob 0]
} {}
do_test blob-1.3 {
  set blob [execsql {SELECT x'abcdEF12';}]
  bin_to_hex [lindex $blob 0]
} {ABCDEF12}
do_test blob-1.3.2 {
  set blob [execsql {SELECT x'0123456789abcdefABCDEF';}]
  bin_to_hex [lindex $blob 0]
} {0123456789ABCDEFABCDEF}

# Try some syntax errors in blob literals.
do_test blob-1.4 {
  catchsql {SELECT X'01020k304', 100}
} {1 {unrecognized token: "X'01020k304'"}}
do_test blob-1.5 {
  catchsql {SELECT X'01020, 100}
................................................................................
} {1 {unrecognized token: "X'01020, 100"}}
do_test blob-1.6 {
  catchsql {SELECT X'01020 100'}
} {1 {unrecognized token: "X'01020 100'"}}
do_test blob-1.7 {
  catchsql {SELECT X'01001'}
} {1 {unrecognized token: "X'01001'"}}
do_test blob-1.8 {
  catchsql {SELECT x'012/45'}
} {1 {unrecognized token: "x'012/45'"}}
do_test blob-1.9 {
  catchsql {SELECT x'012:45'}
} {1 {unrecognized token: "x'012:45'"}}
do_test blob-1.10 {
  catchsql {SELECT x'012@45'}
} {1 {unrecognized token: "x'012@45'"}}
do_test blob-1.11 {
  catchsql {SELECT x'012G45'}
} {1 {unrecognized token: "x'012G45'"}}
do_test blob-1.12 {
  catchsql {SELECT x'012`45'}
} {1 {unrecognized token: "x'012`45'"}}
do_test blob-1.13 {
  catchsql {SELECT x'012g45'}
} {1 {unrecognized token: "x'012g45'"}}


# Insert a blob into a table and retrieve it.
do_test blob-2.0 {
  execsql {
    CREATE TABLE t1(a BLOB, b BLOB);
    INSERT INTO t1 VALUES(X'123456', x'7890ab');
    INSERT INTO t1 VALUES(X'CDEF12', x'345678');

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