llong CExpression::GetSingle( lpctstr & pszArgs )
{
ADDTOCALLSTACK("CExpression::GetSingle");
// Parse just a single expression without any operators or ranges.
ASSERT(pszArgs);
GETNONWHITESPACE( pszArgs );
lpctstr orig = pszArgs;
if (pszArgs[0]=='.')
++pszArgs;
if ( pszArgs[0] == '0' ) // leading '0' = hex value.
{
// A hex value.
if ( pszArgs[1] == '.' ) // leading 0. means it really is decimal.
{
pszArgs += 2;
goto try_dec;
}
lpctstr pStart = pszArgs;
ullong val = 0;
while (true)
{
tchar ch = *pszArgs;
if ( IsDigit(ch) )
ch -= '0';
else
{
ch = static_cast<tchar>(tolower(ch));
if ( ch > 'f' || ch < 'a' )
{
if ( ch == '.' && pStart[0] != '0' ) // ok i'm confused. it must be decimal.
{
pszArgs = pStart;
goto try_dec;
}
break;
}
ch -= 'a' - 10;
}
val *= 0x10;
val += ch;
++pszArgs;
}
return (llong)val;
}
else if ( pszArgs[0] == '.' || IsDigit(pszArgs[0]) )
{
// A decminal number
try_dec:
llong iVal = 0;
for ( ; ; ++pszArgs )
{
if ( *pszArgs == '.' )
continue; // just skip this.
if ( ! IsDigit(*pszArgs) )
break;
iVal *= 10;
iVal += *pszArgs - '0';
}
return iVal;
}
else if ( ! _ISCSYMF(pszArgs[0]) )
{
#pragma region maths
// some sort of math op ?
switch ( pszArgs[0] )
{
case '{':
++pszArgs;
return GetRangeNumber( pszArgs );
case '[':
case '(': // Parse out a sub expression.
++pszArgs;
return GetVal( pszArgs );
case '+':
++pszArgs;
break;
case '-':
++pszArgs;
return -GetSingle( pszArgs );
case '~': // Bitwise not.
++pszArgs;
return ~GetSingle( pszArgs );
case '!': // boolean not.
++pszArgs;
if ( pszArgs[0] == '=' ) // odd condition such as (!=x) which is always true of course.
{
++pszArgs; // so just skip it. and compare it to 0
return GetSingle( pszArgs );
}
return !GetSingle( pszArgs );
case ';': // seperate field.
case ',': // seperate field.
case '\0':
return 0;
}
#pragma endregion maths
}
else
#pragma region intrinsics
{
// Symbol or intrinsinc function ?
INTRINSIC_TYPE iIntrinsic = (INTRINSIC_TYPE) FindTableHeadSorted( pszArgs, sm_IntrinsicFunctions, CountOf(sm_IntrinsicFunctions)-1 );
if ( iIntrinsic >= 0 )
{
size_t iLen = strlen(sm_IntrinsicFunctions[iIntrinsic]);
if ( pszArgs[iLen] == '(' )
{
pszArgs += (iLen + 1);
tchar * pszArgsNext;
Str_Parse( const_cast<tchar*>(pszArgs), &(pszArgsNext), ")" );
tchar * ppCmd[5];
llong iResult;
size_t iCount = 0;
switch ( iIntrinsic )
{
case INTRINSIC_ID:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = RES_GET_INDEX( GetVal(pszArgs) );
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_MAX:
{
iCount = Str_ParseCmds( const_cast<tchar*>(pszArgs), ppCmd, 2, "," );
if ( iCount < 2 )
iResult = 0;
else
{
const int64 iVal1 = GetVal(ppCmd[0]), iVal2 = GetVal(ppCmd[1]);
iResult = maximum(iVal1, iVal2);
}
} break;
case INTRINSIC_MIN:
{
iCount = Str_ParseCmds( const_cast<tchar*>(pszArgs), ppCmd, 2, "," );
if ( iCount < 2 )
iResult = 0;
else
{
const int64 iVal1 = GetVal(ppCmd[0]), iVal2 = GetVal(ppCmd[1]);
iResult = minimum(iVal1, iVal2);
}
} break;
case INTRINSIC_LOGARITHM:
{
iCount = 0;
iResult = 0;
if ( pszArgs && *pszArgs )
{
llong iArgument = GetVal(pszArgs);
if ( iArgument <= 0 )
{
DEBUG_ERR(( "Exp_GetVal: (x)Log(%" PRId64 ") is %s\n", iArgument, (!iArgument) ? "infinite" : "undefined" ));
}
else
{
iCount = 1;
if ( strchr(pszArgs, ',') )
{
++iCount;
SKIP_ARGSEP(pszArgs);
if ( !strcmpi(pszArgs, "e") )
{
iResult = (llong)log( (double)iArgument );
}
else if ( !strcmpi(pszArgs, "pi") )
{
iResult = (llong)(log( (double)iArgument ) / log( M_PI ) );
}
else
{
llong iBase = GetVal(pszArgs);
if ( iBase <= 0 )
{
DEBUG_ERR(( "Exp_GetVal: (%" PRId64 ")Log(%" PRId64 ") is %s\n", iBase, iArgument, (!iBase ? "infinite" : "undefined") ));
iCount = 0;
}
else
iResult = (llong)(log( (double)iArgument ) / log( (double)iBase ));
}
}
else
iResult = (llong)log10( (double)iArgument );
}
}
} break;
case INTRINSIC_NAPIERPOW:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = (llong)exp( (double)GetVal( pszArgs ) );
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_SQRT:
{
iCount = 0;
iResult = 0;
if ( pszArgs && *pszArgs )
{
llong iTosquare = GetVal(pszArgs);
if (iTosquare >= 0)
{
++iCount;
iResult = (llong)sqrt( (double)iTosquare );
}
else
DEBUG_ERR(( "Exp_GetVal: Sqrt of negative number (%" PRId64 ") is impossible\n", iTosquare ));
}
} break;
case INTRINSIC_SIN:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = (llong)sin( (double)GetVal( pszArgs ) );
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_ARCSIN:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = (llong)asin( (double)GetVal( pszArgs ) );
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_COS:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = (llong)cos( (double)GetVal( pszArgs ) );
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_ARCCOS:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = (llong)acos( (double)GetVal( pszArgs ) );
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_TAN:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = (llong)tan( (double)GetVal( pszArgs ) );
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_ARCTAN:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = (llong)atan( (double)GetVal( pszArgs ) );
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_StrIndexOf:
{
iCount = Str_ParseCmds( const_cast<tchar*>(pszArgs), ppCmd, 3, "," );
if ( iCount < 2 )
iResult = -1;
else
iResult = Str_IndexOf( ppCmd[0] , ppCmd[1] , (iCount==3)?(int)GetVal(ppCmd[2]):0 );
} break;
case INTRINSIC_STRMATCH:
{
iCount = Str_ParseCmds( const_cast<tchar*>(pszArgs), ppCmd, 2, "," );
if ( iCount < 2 )
iResult = 0;
else
iResult = (Str_Match( ppCmd[0], ppCmd[1] ) == MATCH_VALID ) ? 1 : 0;
} break;
case INTRINSIC_STRREGEX:
{
iCount = Str_ParseCmds( const_cast<tchar*>(pszArgs), ppCmd, 2, "," );
if ( iCount < 2 )
iResult = 0;
else
{
tchar * tLastError = Str_GetTemp();
iResult = Str_RegExMatch( ppCmd[0], ppCmd[1], tLastError );
if ( iResult == -1 )
{
DEBUG_ERR(( "STRREGEX bad function usage. Error: %s\n", tLastError ));
}
}
} break;
case INTRINSIC_RANDBELL:
{
iCount = Str_ParseCmds( const_cast<tchar*>(pszArgs), ppCmd, 2, "," );
if ( iCount < 2 )
iResult = 0;
else
iResult = Calc_GetBellCurve( (int)GetVal( ppCmd[0] ), (int)GetVal( ppCmd[1] ) );
} break;
case INTRINSIC_STRASCII:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = pszArgs[0];
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_RAND:
{
iCount = Str_ParseCmds( const_cast<tchar*>(pszArgs), ppCmd, 2, "," );
if ( iCount <= 0 )
iResult = 0;
else
{
int64 val1 = GetVal( ppCmd[0] );
if ( iCount == 2 )
{
int64 val2 = GetVal( ppCmd[1] );
iResult = Calc_GetRandLLVal2( val1, val2 );
}
else
iResult = Calc_GetRandLLVal(val1);
}
} break;
case INTRINSIC_STRCMP:
{
iCount = Str_ParseCmds( const_cast<tchar*>(pszArgs), ppCmd, 2, "," );
if ( iCount < 2 )
iResult = 1;
else
iResult = strcmp(ppCmd[0], ppCmd[1]);
} break;
case INTRINSIC_STRCMPI:
{
iCount = Str_ParseCmds( const_cast<tchar*>(pszArgs), ppCmd, 2, "," );
if ( iCount < 2 )
iResult = 1;
else
iResult = strcmpi(ppCmd[0], ppCmd[1]);
} break;
case INTRINSIC_STRLEN:
{
iCount = 1;
iResult = strlen(pszArgs);
} break;
case INTRINSIC_ISOBSCENE:
{
iCount = 1;
iResult = g_Cfg.IsObscene( pszArgs );
} break;
case INTRINSIC_ISNUMBER:
{
iCount = 1;
{
GETNONWHITESPACE( pszArgs );
if (*pszArgs == '-')
++pszArgs;
iResult = IsStrNumeric( pszArgs );
}
} break;
case INTRINSIC_QVAL:
{
iCount = Str_ParseCmds( const_cast<tchar*>(pszArgs), ppCmd, 5, "," );
if ( iCount < 3 )
iResult = 0;
else
{
llong a1 = GetSingle(ppCmd[0]);
llong a2 = GetSingle(ppCmd[1]);
if ( a1 < a2 ) iResult = GetSingle(ppCmd[2]);
else if ( a1 == a2 ) iResult = ( iCount < 4 ) ? 0 : GetSingle(ppCmd[3]);
else iResult = ( iCount < 5 ) ? 0 : GetSingle(ppCmd[4]);
}
} break;
case INTRINSIC_ABS:
{
iCount = 1;
iResult = llabs(GetVal(pszArgs));
} break;
default:
iCount = 0;
iResult = 0;
break;
}
pszArgs = pszArgsNext;
if ( !iCount )
{
DEBUG_ERR(( "Bad intrinsic function usage: Missing arguments\n" ));
return 0;
}
else
return iResult;
}
}
// Must be a symbol of some sort ?
lpctstr ptcArgsOriginal = pszArgs;
llong llVal;
if ( m_VarGlobals.GetParseVal_Advance( pszArgs, &llVal ) ) // VAR.
return llVal;
if ( m_VarResDefs.GetParseVal( ptcArgsOriginal, &llVal ) ) // RESDEF.
return llVal;
if ( m_VarDefs.GetParseVal( ptcArgsOriginal, &llVal ) ) // DEF.
return llVal;
}
#pragma endregion intrinsics
// hard end ! Error of some sort.
tchar szTag[ EXPRESSION_MAX_KEY_LEN ];
size_t i = GetIdentifierString( szTag, pszArgs );
pszArgs += i; // skip it.
if ( strlen(orig) > 1)
DEBUG_ERR(("Undefined symbol '%s' ['%s']\n", szTag, orig));
else
DEBUG_ERR(("Undefined symbol '%s'\n", szTag));
return 0;
}
INT64 CExpression::GetSingle( LPCTSTR & pszArgs )
{
ADDTOCALLSTACK("CExpression::GetSingle");
// Parse just a single expression without any operators or ranges.
ASSERT(pszArgs);
GETNONWHITESPACE( pszArgs );
LPCTSTR orig = pszArgs;
if (pszArgs[0]=='.') pszArgs++;
if ( pszArgs[0] == '0' ) // leading '0' = hex value.
{
// A hex value.
if ( pszArgs[1] == '.' ) // leading 0. means it really is decimal.
{
pszArgs += 2;
goto try_dec;
}
LPCTSTR pStart = pszArgs;
ULONGLONG val = 0;
for (;;)
{
TCHAR ch = *pszArgs;
if ( IsDigit( ch ))
ch -= '0';
else
{
ch = static_cast<TCHAR>(tolower(ch));
if ( ch > 'f' || ch <'a' )
{
if ( ch == '.' && pStart[0] != '0' ) // ok i'm confused. it must be decimal.
{
pszArgs = pStart;
goto try_dec;
}
break;
}
ch -= 'a' - 10;
}
val *= 0x10;
val += ch;
pszArgs ++;
}
return( (INT64)val );
}
else if ( pszArgs[0] == '.' || IsDigit(pszArgs[0]))
{
// A decminal number
try_dec:
INT64 iVal = 0;
for ( ; ; pszArgs++ )
{
if ( *pszArgs == '.' )
continue; // just skip this.
if ( ! IsDigit( *pszArgs ))
break;
iVal *= 10;
iVal += *pszArgs - '0';
}
return( iVal );
}
else if ( ! _ISCSYMF(pszArgs[0]))
{
#pragma region maths
// some sort of math op ?
switch ( pszArgs[0] )
{
case '{':
pszArgs ++;
return( GetRange( pszArgs ));
case '[':
case '(': // Parse out a sub expression.
pszArgs ++;
return(GetVal( pszArgs ));
case '+':
pszArgs++;
break;
case '-':
pszArgs++;
return( -GetSingle( pszArgs ));
case '~': // Bitwise not.
pszArgs++;
return( ~GetSingle( pszArgs ));
case '!': // boolean not.
pszArgs++;
if ( pszArgs[0] == '=' ) // odd condition such as (!=x) which is always true of course.
{
pszArgs++; // so just skip it. and compare it to 0
return( GetSingle( pszArgs ));
}
return( !GetSingle( pszArgs ));
case ';': // seperate field.
case ',': // seperate field.
case '\0':
return( 0 );
}
#pragma endregion maths
}
else
#pragma region intrinsics
{
// Symbol or intrinsinc function ?
INTRINSIC_TYPE iIntrinsic = (INTRINSIC_TYPE) FindTableHeadSorted( pszArgs, sm_IntrinsicFunctions, COUNTOF(sm_IntrinsicFunctions)-1 );
if ( iIntrinsic >= 0 )
{
size_t iLen = strlen(sm_IntrinsicFunctions[iIntrinsic]);
if ( pszArgs[iLen] == '(' )
{
pszArgs += (iLen + 1);
TCHAR * pszArgsNext;
Str_Parse( const_cast<TCHAR*>(pszArgs), &(pszArgsNext), ")" );
TCHAR * ppCmd[5];
INT64 iResult;
size_t iCount = 0;
switch ( iIntrinsic )
{
case INTRINSIC_ID:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = RES_GET_INDEX( GetVal( pszArgs )); // RES_GET_INDEX
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_LOGARITHM:
{
iCount = 0;
iResult = 0;
if ( pszArgs && *pszArgs )
{
int iArgument = static_cast<long>(GetVal(pszArgs));
if ( iArgument <= 0 )
{
DEBUG_ERR(( "Exp_GetVal: (x)Log(%d) is %s\n", iArgument, (!iArgument) ? "infinite" : "undefined" ));
}
else
{
iCount = 1;
if ( strchr(pszArgs, ',') )
{
iCount++; SKIP_ARGSEP(pszArgs);
if ( !strcmpi(pszArgs, "e") )
{
iResult = static_cast<INT64>(log(static_cast<double>(iArgument)));
}
else if ( !strcmpi(pszArgs, "pi") )
{
iResult = static_cast<INT64>(log(static_cast<double>(iArgument)) / log(M_PI));
}
else
{
INT64 iBase = GetVal(pszArgs);
if ( iBase <= 0 )
{
DEBUG_ERR(( "Exp_GetVal: (%lld)Log(%d) is %s\n", iBase, iArgument, (!iBase) ? "infinite" : "undefined" ));
iCount = 0;
}
else
{
iResult = static_cast<INT64>(log(static_cast<double>(iArgument)) / log(static_cast<double>(iBase)));
}
}
}
else
{
iResult = static_cast<INT64>(log10(static_cast<double>(iArgument)));
}
}
}
} break;
case INTRINSIC_NAPIERPOW:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = static_cast<INT64>(exp(static_cast<double>(GetVal(pszArgs))));
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_SQRT:
{
iCount = 0;
iResult = 0;
if ( pszArgs && *pszArgs )
{
int iTosquare = static_cast<long>(GetVal(pszArgs));
if (iTosquare >= 0)
{
iCount++;
iResult = static_cast<INT64>(sqrt(static_cast<double>(iTosquare)));
}
else
{
DEBUG_ERR(( "Exp_GetVal: Sqrt of negative number (%d) is impossible\n", iTosquare ));
}
}
} break;
case INTRINSIC_SIN:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = static_cast<INT64>(sin(static_cast<double>(GetVal(pszArgs))));
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_ARCSIN:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = static_cast<INT64>(asin(static_cast<double>(GetVal(pszArgs))));
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_COS:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = static_cast<INT64>(cos(static_cast<double>(GetVal(pszArgs))));
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_ARCCOS:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = static_cast<INT64>(acos(static_cast<double>(GetVal(pszArgs))));
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_TAN:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = static_cast<INT64>(tan(static_cast<double>(GetVal(pszArgs))));
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_ARCTAN:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = static_cast<INT64>(atan(static_cast<double>(GetVal(pszArgs))));
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_StrIndexOf:
{
iCount = Str_ParseCmds( const_cast<TCHAR*>(pszArgs), ppCmd, 3, "," );
if ( iCount < 2 )
iResult = -1;
else
iResult = Str_IndexOf(ppCmd[0],ppCmd[1],(iCount==3)?static_cast<long>(GetVal(ppCmd[2])):0);
} break;
case INTRINSIC_STRMATCH:
{
iCount = Str_ParseCmds( const_cast<TCHAR*>(pszArgs), ppCmd, 2, "," );
if ( iCount < 2 )
iResult = 0;
else
iResult = (Str_Match( ppCmd[0], ppCmd[1] ) == MATCH_VALID ) ? 1 : 0;
} break;
case INTRINSIC_STRREGEX:
{
iCount = Str_ParseCmds( const_cast<TCHAR*>(pszArgs), ppCmd, 2, "," );
if ( iCount < 2 )
iResult = 0;
else
{
TCHAR * tLastError = Str_GetTemp();
iResult = Str_RegExMatch( ppCmd[0], ppCmd[1], tLastError );
if ( iResult == -1 )
{
DEBUG_ERR(( "STRREGEX bad function usage. Error: %s\n", tLastError ));
}
}
} break;
case INTRINSIC_RANDBELL:
{
iCount = Str_ParseCmds( const_cast<TCHAR*>(pszArgs), ppCmd, 2, "," );
if ( iCount < 2 )
iResult = 0;
else
iResult = Calc_GetBellCurve( static_cast<long>(GetVal( ppCmd[0] )), static_cast<long>(GetVal( ppCmd[1] )));
} break;
case INTRINSIC_STRASCII:
{
if ( pszArgs && *pszArgs )
{
iCount = 1;
iResult = pszArgs[0];
}
else
{
iCount = 0;
iResult = 0;
}
} break;
case INTRINSIC_RAND:
{
iCount = Str_ParseCmds( const_cast<TCHAR*>(pszArgs), ppCmd, 2, "," );
if ( iCount <= 0 )
iResult = 0;
else
{
INT64 val1 = GetVal( ppCmd[0] );
if ( iCount == 2 )
{
INT64 val2 = GetVal( ppCmd[1] );
iResult = Calc_GetRandLLVal2( val1, val2 );
}
else
iResult = Calc_GetRandLLVal(val1);
}
} break;
case INTRINSIC_STRCMP:
{
iCount = Str_ParseCmds( const_cast<TCHAR*>(pszArgs), ppCmd, 2, "," );
if ( iCount < 2 )
iResult = 1;
else
iResult = strcmp(ppCmd[0], ppCmd[1]);
} break;
case INTRINSIC_STRCMPI:
{
iCount = Str_ParseCmds( const_cast<TCHAR*>(pszArgs), ppCmd, 2, "," );
if ( iCount < 2 )
iResult = 1;
else
iResult = strcmpi(ppCmd[0], ppCmd[1]);
} break;
case INTRINSIC_STRLEN:
{
iCount = 1;
iResult = strlen(pszArgs);
} break;
case INTRINSIC_ISOBSCENE:
{
iCount = 1;
iResult = g_Cfg.IsObscene( pszArgs );
} break;
case INTRINSIC_ISNUMBER:
{
iCount = 1;
{
char z[64];
LTOA(atol(pszArgs), z, 10);
iResult = strcmp(pszArgs, z) ? 0 : 1;
}
} break;
case INTRINSIC_QVAL:
{
iCount = Str_ParseCmds( const_cast<TCHAR*>(pszArgs), ppCmd, 5, "," );
if ( iCount < 3 )
iResult = 0;
else
{
INT64 a1 = GetSingle(ppCmd[0]);
INT64 a2 = GetSingle(ppCmd[1]);
if ( a1 < a2 ) iResult = GetSingle(ppCmd[2]);
else if ( a1 == a2 ) iResult = ( iCount < 4 ) ? 0 : GetSingle(ppCmd[3]);
else iResult = ( iCount < 5 ) ? 0 : GetSingle(ppCmd[4]);
}
} break;
case INTRINSIC_ABS:
{
iCount = 1;
iResult = llabs(GetVal(pszArgs));
} break;
default:
iCount = 0;
iResult = 0;
break;
}
pszArgs = pszArgsNext;
if ( ! iCount )
{
DEBUG_ERR(( "Bad intrinsic function usage: Missing arguments\n" ));
return 0;
}
else
{
return iResult;
}
}
}
// Must be a symbol of some sort ?
long long lVal;
if ( m_VarGlobals.GetParseVal( pszArgs, &lVal ) )
return(lVal);
if ( m_VarDefs.GetParseVal( pszArgs, &lVal ) )
return(lVal);
}
#pragma endregion intrinsics
// hard end ! Error of some sort.
TCHAR szTag[ EXPRESSION_MAX_KEY_LEN ];
size_t i = GetIdentifierString( szTag, pszArgs );
pszArgs += i; // skip it.
if (strlen(orig)> 1)
DEBUG_ERR(("Undefined symbol '%s' ['%s']\n", szTag, orig));
else
DEBUG_ERR(("Undefined symbol '%s'\n", szTag));
return( 0 );
}