SQLite

    assert( pStmt==0 );
    zErr = sqlite3_mprintf("sqlite3_prepare_v2() error: %s",sqlite3_errmsg(db));
    sqlite3_result_text(pCtx, zErr, -1, sqlite3_free);
    sqlite3_result_error_code(pCtx, rc);
  }
}


/*
** convert one character from hex to binary
*/
static int testHexChar(char c){
  if( c>='0' && c<='9' ){
    return c - '0';
  }else if( c>='a' && c<='f' ){
    return c - 'a' + 10;
  }else if( c>='A' && c<='F' ){
    return c - 'A' + 10;
  }
  return 0;
}

/*
** Convert hex to binary.
*/
static void testHexToBin(const char *zIn, char *zOut){
  while( zIn[0] && zIn[1] ){
    *(zOut++) = (testHexChar(zIn[0])<<4) + testHexChar(zIn[1]);
    zIn += 2;
  }
}

/*
**      hex_to_utf16be(HEX)
**
** Convert the input string from HEX into binary.  Then return the
** result using sqlite3_result_text16le().
*/
static void testHexToUtf16be(
  sqlite3_context *pCtx, 
  int nArg,
  sqlite3_value **argv
){
  int n;
  const char *zIn;
  char *zOut;
  assert( nArg==1 );
  n = sqlite3_value_bytes(argv[0]);
  zIn = (const char*)sqlite3_value_text(argv[0]);
  zOut = sqlite3_malloc( n/2 );
  if( zOut==0 ){
    sqlite3_result_error_nomem(pCtx);
  }else{
    testHexToBin(zIn, zOut);
    sqlite3_result_text16be(pCtx, zOut, n/2, sqlite3_free);
  }
}

/*
**      hex_to_utf8(HEX)
**
** Convert the input string from HEX into binary.  Then return the
** result using sqlite3_result_text16le().
*/
static void testHexToUtf8(
  sqlite3_context *pCtx, 
  int nArg,
  sqlite3_value **argv
){
  int n;
  const char *zIn;
  char *zOut;
  assert( nArg==1 );
  n = sqlite3_value_bytes(argv[0]);
  zIn = (const char*)sqlite3_value_text(argv[0]);
  zOut = sqlite3_malloc( n/2 );
  if( zOut==0 ){
    sqlite3_result_error_nomem(pCtx);
  }else{
    testHexToBin(zIn, zOut);
    sqlite3_result_text(pCtx, zOut, n/2, sqlite3_free);
  }
}

/*
**      hex_to_utf16le(HEX)
**
** Convert the input string from HEX into binary.  Then return the
** result using sqlite3_result_text16le().
*/
static void testHexToUtf16le(
  sqlite3_context *pCtx, 
  int nArg,
  sqlite3_value **argv
){
  int n;
  const char *zIn;
  char *zOut;
  assert( nArg==1 );
  n = sqlite3_value_bytes(argv[0]);
  zIn = (const char*)sqlite3_value_text(argv[0]);
  zOut = sqlite3_malloc( n/2 );
  if( zOut==0 ){
    sqlite3_result_error_nomem(pCtx);
  }else{
    testHexToBin(zIn, zOut);
    sqlite3_result_text16le(pCtx, zOut, n/2, sqlite3_free);
  }
}

static int registerTestFunctions(sqlite3 *db){
  static const struct {
     char *zName;
     signed char nArg;
     unsigned char eTextRep; /* 1: UTF-16.  0: UTF-8 */
     void (*xFunc)(sqlite3_context*,int,sqlite3_value **);
  } aFuncs[] = {
    { "randstr",               2, SQLITE_UTF8, randStr    },
    { "test_destructor",       1, SQLITE_UTF8, test_destructor},
#ifndef SQLITE_OMIT_UTF16
    { "test_destructor16",     1, SQLITE_UTF8, test_destructor16},
    { "hex_to_utf16be",        1, SQLITE_UTF8, testHexToUtf16be},
    { "hex_to_utf16le",        1, SQLITE_UTF8, testHexToUtf16le},
#endif
    { "hex_to_utf8",           1, SQLITE_UTF8, testHexToUtf8},
    { "test_destructor_count", 0, SQLITE_UTF8, test_destructor_count},
    { "test_auxdata",         -1, SQLITE_UTF8, test_auxdata},
    { "test_error",            1, SQLITE_UTF8, test_error},
    { "test_error",            2, SQLITE_UTF8, test_error},
    { "test_eval",             1, SQLITE_UTF8, test_eval},
    { "test_isolation",        2, SQLITE_UTF8, test_isolation},
    { "test_counter",          1, SQLITE_UTF8, counterFunc},

  return TCL_OK;

abuse_err:
  Tcl_AppendResult(interp, "sqlite3_create_function abused test failed", 
                   (char*)0);
  return TCL_ERROR;
}



/*
** Register commands with the TCL interpreter.
*/
int Sqlitetest_func_Init(Tcl_Interp *interp){
  static struct {
     char *zName;

    *zOut++ = (u8)(0x00D8 + (((c-0x10000)>>18)&0x03));              \
    *zOut++ = (u8)(((c>>10)&0x003F) + (((c-0x10000)>>10)&0x00C0));  \
    *zOut++ = (u8)(0x00DC + ((c>>8)&0x03));                         \
    *zOut++ = (u8)(c&0x00FF);                                       \
  }                                                                 \
}

#define READ_UTF16LE(zIn, zTerm, c){                                  \
  c = (*zIn++);                                                       \
  c += ((*zIn++)<<8);                                                 \
  if( c>=0xD800 && c<0xE000 && zIn<zTerm ){                           \
    int c2 = (*zIn++);                                                \
    c2 += ((*zIn++)<<8);                                              \
    c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10);   \
  }                                                                   \
}

#define READ_UTF16BE(zIn, zTerm, c){                                  \
  c = ((*zIn++)<<8);                                                  \
  c += (*zIn++);                                                      \
  if( c>=0xD800 && c<0xE000 && zIn<zTerm ){                           \
    int c2 = ((*zIn++)<<8);                                           \
    c2 += (*zIn++);                                                   \
    c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10);   \
  }                                                                   \
}

/*

    pMem->n = (int)(z - zOut);
    *z++ = 0;
  }else{
    assert( desiredEnc==SQLITE_UTF8 );
    if( pMem->enc==SQLITE_UTF16LE ){
      /* UTF-16 Little-endian -> UTF-8 */
      while( zIn<zTerm ){
        READ_UTF16LE(zIn, zTerm, c); 
        WRITE_UTF8(z, c);
      }
    }else{
      /* UTF-16 Big-endian -> UTF-8 */
      while( zIn<zTerm ){
        READ_UTF16BE(zIn, zTerm, c); 
        WRITE_UTF8(z, c);
      }
    }
    pMem->n = (int)(z - zOut);
  }
  *z = 0;
  assert( (pMem->n+(desiredEnc==SQLITE_UTF8?1:2))<=len );

** pZ is a UTF-16 encoded unicode string at least nChar characters long.
** Return the number of bytes in the first nChar unicode characters
** in pZ.  nChar must be non-negative.
*/
int sqlite3Utf16ByteLen(const void *zIn, int nChar){
  int c;
  unsigned char const *z = zIn;
  unsigned char const *zTerm = &z[nChar];
  int n = 0;
  if( SQLITE_UTF16NATIVE==SQLITE_UTF16BE ){
    /* Using an "if (SQLITE_UTF16NATIVE==SQLITE_UTF16BE)" construct here
    ** and in other parts of this file means that at one branch will
    ** not be covered by coverage testing on any single host. But coverage
    ** will be complete if the tests are run on both a little-endian and 
    ** big-endian host. Because both the UTF16NATIVE and SQLITE_UTF16BE
    ** macros are constant at compile time the compiler can determine
    ** which branch will be followed. It is therefore assumed that no runtime
    ** penalty is paid for this "if" statement.
    */
    while( n<nChar ){
      READ_UTF16BE(z, zTerm, c);
      n++;
    }
  }else{
    while( n<nChar ){
      READ_UTF16LE(z, zTerm, c);
      n++;
    }
  }
  return (int)(z-(unsigned char const *)zIn);
}

#if defined(SQLITE_TEST)

    if( i>=0xD800 && i<0xE000 ) continue;
    z = zBuf;
    WRITE_UTF16LE(z, i);
    n = (int)(z-zBuf);
    assert( n>0 && n<=4 );
    z[0] = 0;
    z = zBuf;
    READ_UTF16LE(z, &zBuf[n], c);
    assert( c==i );
    assert( (z-zBuf)==n );
  }
  for(i=0; i<0x00110000; i++){
    if( i>=0xD800 && i<0xE000 ) continue;
    z = zBuf;
    WRITE_UTF16BE(z, i);
    n = (int)(z-zBuf);
    assert( n>0 && n<=4 );
    z[0] = 0;
    z = zBuf;
    READ_UTF16BE(z, &zBuf[n], c);
    assert( c==i );
    assert( (z-zBuf)==n );
  }
}
#endif /* SQLITE_TEST */
#endif /* SQLITE_OMIT_UTF16 */

# 2009 October 23
#
# 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 to verify that ticket [3fe897352e8d8] has been
# fixed.  
#

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

do_test tkt-3fe89-1.1 {
  db close
  sqlite3 db :memory:
  db eval {
    PRAGMA encoding=UTF8;
    CREATE TABLE t1(x);
    INSERT INTO t1 VALUES(hex_to_utf16be('D800'));
    SELECT hex(x) FROM t1;
  }
} {EDA080}
do_test tkt-3fe89-1.2 {
  db eval {
    DELETE FROM t1;
    INSERT INTO t1 VALUES(hex_to_utf16le('00D8'));
    SELECT hex(x) FROM t1;
  }
} {EDA080}
do_test tkt-3fe89-1.3 {
  db eval {
    DELETE FROM t1;
    INSERT INTO t1 VALUES(hex_to_utf16be('DFFF'));
    SELECT hex(x) FROM t1;
  }
} {EDBFBF}
do_test tkt-3fe89-1.4 {
  db eval {
    DELETE FROM t1;
    INSERT INTO t1 VALUES(hex_to_utf16le('FFDF'));
    SELECT hex(x) FROM t1;
  }
} {EDBFBF}


finish_test