SQLite

**
*************************************************************************
** Main file for the SQLite library.  The routines in this file
** implement the programmer interface to the library.  Routines in
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.241 2004/06/29 11:26:59 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>

/*
** A pointer to this structure is used to communicate information

    ** The copy is unnecessary if the tail pointer is pointing at the
    ** beginnig or end of the SQL string.
    */
    if( sParse.zTail && sParse.zTail!=zSql && *sParse.zTail ){
      char *tmpSql = sqliteStrNDup(zSql, sParse.zTail - zSql);
      if( tmpSql ){
        db->xTrace(db->pTraceArg, tmpSql);
        sqliteFree(tmpSql);
      }else{
        /* If a memory error occurred during the copy,
        ** trace entire SQL string and fall through to the
        ** sqlite3_malloc_failed test to report the error.
        */
        db->xTrace(db->pTraceArg, zSql); 
      }

/*
** 2001 September 15
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**
**    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.
**
*************************************************************************
** A TCL Interface to SQLite
**
** $Id: tclsqlite.c,v 1.91 2004/06/29 11:26:59 drh Exp $
*/
#ifndef NO_TCL     /* Omit this whole file if TCL is unavailable */

#include "sqliteInt.h"
#include "tcl.h"
#include <stdlib.h>
#include <string.h>

  ** Make arrangements to invoke the CALLBACK routine for each SQL statement
  ** that is executed.  The text of the SQL is appended to CALLBACK before
  ** it is executed.
  */
  case DB_TRACE: {
    if( objc>3 ){
      Tcl_WrongNumArgs(interp, 2, objv, "?CALLBACK?");
      return TCL_ERROR;
    }else if( objc==2 ){
      if( pDb->zTrace ){
        Tcl_AppendResult(interp, pDb->zTrace, 0);
      }
    }else{
      char *zTrace;
      int len;

# 2004 Jun 29
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    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.
#
# This file implements tests for the "sqlite3_trace()" API.
#
# $Id: trace.test,v 1.1 2004/06/29 11:26:59 drh Exp $

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

do_test trace-1.1 {
  set rc [catch {db trace 1 2 3} msg]
  lappend rc $msg
} {1 {wrong # args: should be "db trace ?CALLBACK?"}}
proc trace_proc cmd {
  lappend ::stmtlist [string trim $cmd]
}
do_test trace-1.2 {
  db trace trace_proc
  db trace
} {trace_proc}
do_test trace-1.3 {
  execsql {
    CREATE TABLE t1(a,b);
    INSERT INTO t1 VALUES(1,2);
    SELECT * FROM t1;
  }
} {1 2}
do_test trace-1.4 {
  set ::stmtlist
} {{CREATE TABLE t1(a,b);} {INSERT INTO t1 VALUES(1,2);} {SELECT * FROM t1;} {}}
do_test trace-1.5 {
  db trace {}
  db trace
} {}

finish_test