/// <summary> Wraps, parses and formats the variable arguments of the real delegate. </summary>
private static void LogHandlerWrapper(libobs.log_error_level lvl, string format, IntPtr args, IntPtr p)
{
using (va_list arglist = new va_list(args))
{
object[] objs = arglist.GetObjectsByFormat(format);
string formattedMsg = Printf.sprintf(format, objs);
realHandler((LogErrorLevel)lvl, formattedMsg, p);
}
}
public static object /*?*/ va_arg(va_list argp, Type t)
{
ArgIterator ai = argp;
if (ai.GetRemainingCount() > 0)
{
TypedReference tr = ai.GetNextArg();
// TODO: coerce return value to type t...
return((object)(__refvalue(tr, object)));
}
throw new FormatException();
}
static char[] buf = new char[etBUFSIZE]; /* Conversion buffer */
static void sqlite3VXPrintf(
StrAccum pAccum, /* Accumulate results here */
int useExtended, /* Allow extended %-conversions */
string fmt, /* Format string */
va_list[] ap /* arguments */
)
{
int c; /* Next character in the format string */
int bufpt; /* Pointer to the conversion buffer */
int precision; /* Precision of the current field */
int length; /* Length of the field */
int idx; /* A general purpose loop counter */
int width; /* Width of the current field */
etByte flag_leftjustify; /* True if "-" flag is present */
etByte flag_plussign; /* True if "+" flag is present */
etByte flag_blanksign; /* True if " " flag is present */
etByte flag_alternateform; /* True if "#" flag is present */
etByte flag_altform2; /* True if "!" flag is present */
etByte flag_zeropad; /* True if field width constant starts with zero */
etByte flag_long; /* True if "l" flag is present */
etByte flag_longlong; /* True if the "ll" flag is present */
etByte done; /* Loop termination flag */
i64 longvalue;
LONGDOUBLE_TYPE realvalue; /* Value for real types */
et_info infop; /* Pointer to the appropriate info structure */
char[] buf = new char[etBUFSIZE]; /* Conversion buffer */
char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */
byte xtype = 0; /* Conversion paradigm */
// Not used in C# -- string zExtra; /* Extra memory used for etTCLESCAPE conversions */
#if !SQLITE_OMIT_FLOATING_POINT
int exp, e2; /* exponent of real numbers */
double rounder; /* Used for rounding floating point values */
etByte flag_dp; /* True if decimal point should be shown */
etByte flag_rtz; /* True if trailing zeros should be removed */
etByte flag_exp; /* True to force display of the exponent */
int nsd; /* Number of significant digits returned */
#endif
length = 0;
bufpt = 0;
int _fmt = 0; // Work around string pointer
fmt += '\0';
for ( ; _fmt <= fmt.Length && ( c = fmt[_fmt] ) != 0; ++_fmt )
{
if ( c != '%' )
{
int amt;
bufpt = _fmt;
amt = 1;
while ( _fmt < fmt.Length && ( c = ( fmt[++_fmt] ) ) != '%' && c != 0 )
amt++;
sqlite3StrAccumAppend( pAccum, fmt.Substring( bufpt, amt ), amt );
if ( c == 0 )
break;
}
if ( _fmt < fmt.Length && ( c = ( fmt[++_fmt] ) ) == 0 )
{
sqlite3StrAccumAppend( pAccum, "%", 1 );
break;
}
/* Find out what flags are present */
flag_leftjustify = flag_plussign = flag_blanksign =
flag_alternateform = flag_altform2 = flag_zeropad = false;
done = false;
do
{
switch ( c )
{
case '-':
flag_leftjustify = true;
break;
case '+':
flag_plussign = true;
break;
case ' ':
flag_blanksign = true;
break;
case '#':
flag_alternateform = true;
break;
case '!':
flag_altform2 = true;
break;
case '0':
flag_zeropad = true;
break;
default:
done = true;
break;
}
} while ( !done && _fmt < fmt.Length - 1 && ( c = ( fmt[++_fmt] ) ) != 0 );
/* Get the field width */
width = 0;
if ( c == '*' )
{
width = (int)va_arg( ap, "int" );
if ( width < 0 )
{
flag_leftjustify = true;
width = -width;
}
c = fmt[++_fmt];
}
else
{
while ( c >= '0' && c <= '9' )
{
width = width * 10 + c - '0';
c = fmt[++_fmt];
}
}
if ( width > etBUFSIZE - 10 )
{
width = etBUFSIZE - 12;
}
/* Get the precision */
if ( c == '.' )
{
precision = 0;
c = fmt[++_fmt];
if ( c == '*' )
{
precision = (int)va_arg( ap, "int" );
if ( precision < 0 )
precision = -precision;
c = fmt[++_fmt];
}
else
{
while ( c >= '0' && c <= '9' )
{
precision = precision * 10 + c - '0';
c = fmt[++_fmt];
}
}
}
else
{
precision = -1;
}
/* Get the conversion type modifier */
if ( c == 'l' )
{
flag_long = true;
c = fmt[++_fmt];
if ( c == 'l' )
{
flag_longlong = true;
c = fmt[++_fmt];
}
else
{
flag_longlong = false;
}
}
else
{
flag_long = flag_longlong = false;
}
/* Fetch the info entry for the field */
infop = fmtinfo[0];
xtype = etINVALID;
for ( idx = 0; idx < ArraySize( fmtinfo ); idx++ )
{
if ( c == fmtinfo[idx].fmttype )
{
infop = fmtinfo[idx];
if ( useExtended != 0 || ( infop.flags & FLAG_INTERN ) == 0 )
{
xtype = infop.type;
}
else
{
return;
}
break;
}
}
//zExtra = null;
/* Limit the precision to prevent overflowing buf[] during conversion */
if ( precision > etBUFSIZE - 40 && ( infop.flags & FLAG_STRING ) == 0 )
{
precision = etBUFSIZE - 40;
}
/*
** At this point, variables are initialized as follows:
**
** flag_alternateform TRUE if a '#' is present.
** flag_altform2 TRUE if a '!' is present.
** flag_plussign TRUE if a '+' is present.
** flag_leftjustify TRUE if a '-' is present or if the
** field width was negative.
** flag_zeropad TRUE if the width began with 0.
** flag_long TRUE if the letter 'l' (ell) prefixed
** the conversion character.
** flag_longlong TRUE if the letter 'll' (ell ell) prefixed
** the conversion character.
** flag_blanksign TRUE if a ' ' is present.
** width The specified field width. This is
** always non-negative. Zero is the default.
** precision The specified precision. The default
** is -1.
** xtype The class of the conversion.
** infop Pointer to the appropriate info struct.
*/
switch ( xtype )
{
case etPOINTER:
flag_longlong = true;// char*.Length == sizeof(i64);
flag_long = false;// char*.Length == sizeof(long);
/* Fall through into the next case */
goto case etRADIX;
case etORDINAL:
case etRADIX:
if ( ( infop.flags & FLAG_SIGNED ) != 0 )
{
i64 v;
if ( flag_longlong )
{
v = (long)va_arg( ap, "i64" );
}
else if ( flag_long )
{
v = (long)va_arg( ap, "long int" );
}
else
{
v = (int)va_arg( ap, "int" );
}
if ( v < 0 )
{
longvalue = -v;
prefix = '-';
}
else
{
longvalue = v;
if ( flag_plussign )
prefix = '+';
else if ( flag_blanksign )
prefix = ' ';
else
prefix = '\0';
}
}
else
{
if ( flag_longlong )
{
longvalue = (i64)va_arg( ap, "longlong int" );
}
else if ( flag_long )
{
longvalue = (i64)va_arg( ap, "long int" );
}
else
{
longvalue = (i64)va_arg( ap, "long" );
}
prefix = '\0';
}
if ( longvalue == 0 )
flag_alternateform = false;
if ( flag_zeropad && precision < width - ( ( prefix != '\0' ) ? 1 : 0 ) )
{
precision = width - ( ( prefix != '\0' ) ? 1 : 0 );
}
bufpt = buf.Length;//[etBUFSIZE-1];
char[] _bufOrd = null;
if ( xtype == etORDINAL )
{
char[] zOrd = "thstndrd".ToCharArray();
int x = (int)( longvalue % 10 );
if ( x >= 4 || ( longvalue / 10 ) % 10 == 1 )
{
x = 0;
}
_bufOrd = new char[2];
_bufOrd[0] = zOrd[x * 2];
_bufOrd[1] = zOrd[x * 2 + 1];
//bufpt -= 2;
}
{
char[] _buf;
switch ( infop._base )
{
case 16:
_buf = longvalue.ToString( "x" ).ToCharArray();
break;
case 8:
_buf = Convert.ToString( (long)longvalue, 8 ).ToCharArray();
break;
default:
{
if ( flag_zeropad )
_buf = longvalue.ToString( new string( '0', width - ( ( prefix != '\0' ) ? 1 : 0 ) ) ).ToCharArray();
else
_buf = longvalue.ToString().ToCharArray();
}
break;
}
bufpt = buf.Length - _buf.Length - ( _bufOrd == null ? 0 : 2 );
Array.Copy( _buf, 0, buf, bufpt, _buf.Length );
if ( _bufOrd != null )
{
buf[buf.Length - 1] = _bufOrd[1];
buf[buf.Length - 2] = _bufOrd[0];
}
//char* cset; /* Use registers for speed */
//int _base;
//cset = aDigits[infop.charset];
//_base = infop._base;
//do
//{ /* Convert to ascii */
// *(--bufpt) = cset[longvalue % (ulong)_base];
// longvalue = longvalue / (ulong)_base;
//} while (longvalue > 0);
}
length = buf.Length - bufpt;//length = (int)(&buf[etBUFSIZE-1]-bufpt);
for ( idx = precision - length; idx > 0; idx-- )
{
buf[( --bufpt )] = '0'; /* Zero pad */
}
if ( prefix != '\0' )
buf[--bufpt] = prefix; /* Add sign */
if ( flag_alternateform && infop.prefix != 0 )
{ /* Add "0" or "0x" */
int pre;
char x;
pre = infop.prefix;
for ( ; ( x = aPrefix[pre] ) != 0; pre++ )
buf[--bufpt] = x;
}
length = buf.Length - bufpt;//length = (int)(&buf[etBUFSIZE-1]-bufpt);
break;
case etFLOAT:
case etEXP:
case etGENERIC:
realvalue = (double)va_arg( ap, "double" );
#if SQLITE_OMIT_FLOATING_POINT
length = 0;
#else
if ( precision < 0 )
precision = 6; /* Set default precision */
if ( precision > etBUFSIZE / 2 - 10 )
precision = etBUFSIZE / 2 - 10;
if ( realvalue < 0.0 )
{
realvalue = -realvalue;
prefix = '-';
}
else
{
if ( flag_plussign )
prefix = '+';
else if ( flag_blanksign )
prefix = ' ';
else
prefix = '\0';
}
if ( xtype == etGENERIC && precision > 0 )
precision--;
#if FALSE
/* Rounding works like BSD when the constant 0.4999 is used. Wierd! */
for(idx=precision, rounder=0.4999; idx>0; idx--, rounder*=0.1);
#else
/* It makes more sense to use 0.5 */
for ( idx = precision, rounder = 0.5; idx > 0; idx--, rounder *= 0.1 )
{
}
#endif
if ( xtype == etFLOAT )
realvalue += rounder;
/* Normalize realvalue to within 10.0 > realvalue >= 1.0 */
exp = 0;
double d = 0;
if ( Double.IsNaN( realvalue ) || !( Double.TryParse( Convert.ToString( realvalue ), out d ) ) )//if( sqlite3IsNaN((double)realvalue) )
{
buf[0] = 'N';
buf[1] = 'a';
buf[2] = 'N';// "NaN"
length = 3;
break;
}
if ( realvalue > 0.0 )
{
while ( realvalue >= 1e32 && exp <= 350 )
{
realvalue *= 1e-32;
exp += 32;
}
while ( realvalue >= 1e8 && exp <= 350 )
{
realvalue *= 1e-8;
exp += 8;
}
while ( realvalue >= 10.0 && exp <= 350 )
{
realvalue *= 0.1;
exp++;
}
while ( realvalue < 1e-8 )
{
realvalue *= 1e8;
exp -= 8;
}
while ( realvalue < 1.0 )
{
realvalue *= 10.0;
exp--;
}
if ( exp > 350 )
{
if ( prefix == '-' )
{
buf[0] = '-';
buf[1] = 'I';
buf[2] = 'n';
buf[3] = 'f';// "-Inf"
bufpt = 4;
}
else if ( prefix == '+' )
{
buf[0] = '+';
buf[1] = 'I';
buf[2] = 'n';
buf[3] = 'f';// "+Inf"
bufpt = 4;
}
else
{
buf[0] = 'I';
buf[1] = 'n';
buf[2] = 'f';// "Inf"
bufpt = 3;
}
length = sqlite3Strlen30( bufpt );// sqlite3Strlen30(bufpt);
bufpt = 0;
break;
}
}
bufpt = 0;
/*
** If the field type is etGENERIC, then convert to either etEXP
** or etFLOAT, as appropriate.
*/
flag_exp = xtype == etEXP;
if ( xtype != etFLOAT )
{
realvalue += rounder;
if ( realvalue >= 10.0 )
{
realvalue *= 0.1;
exp++;
}
}
if ( xtype == etGENERIC )
{
flag_rtz = !flag_alternateform;
if ( exp < -4 || exp > precision )
{
xtype = etEXP;
}
else
{
precision = precision - exp;
xtype = etFLOAT;
}
}
else
{
flag_rtz = false;
}
if ( xtype == etEXP )
{
e2 = 0;
}
else
{
e2 = exp;
}
nsd = 0;
flag_dp = ( precision > 0 ? true : false ) | flag_alternateform | flag_altform2;
/* The sign in front of the number */
if ( prefix != '\0' )
{
buf[bufpt++] = prefix;
}
/* Digits prior to the decimal point */
if ( e2 < 0 )
{
buf[bufpt++] = '0';
}
else
{
for ( ; e2 >= 0; e2-- )
{
buf[bufpt++] = (char)( et_getdigit( ref realvalue, ref nsd ) + '0' ); // *(bufpt++) = et_getdigit(ref realvalue, ref nsd);
}
}
/* The decimal point */
if ( flag_dp )
{
buf[bufpt++] = '.';
}
/* "0" digits after the decimal point but before the first
** significant digit of the number */
for ( e2++; e2 < 0; precision--, e2++ )
{
Debug.Assert( precision > 0 );
buf[bufpt++] = '0';
}
/* Significant digits after the decimal point */
while ( ( precision-- ) > 0 )
{
buf[bufpt++] = (char)( et_getdigit( ref realvalue, ref nsd ) + '0' ); // *(bufpt++) = et_getdigit(&realvalue, nsd);
}
/* Remove trailing zeros and the "." if no digits follow the "." */
if ( flag_rtz && flag_dp )
{
while ( buf[bufpt - 1] == '0' )
buf[--bufpt] = '\0';
Debug.Assert( bufpt > 0 );
if ( buf[bufpt - 1] == '.' )
{
if ( flag_altform2 )
{
buf[( bufpt++ )] = '0';
}
else
{
buf[( --bufpt )] = '0';
}
}
}
/* Add the "eNNN" suffix */
if ( flag_exp || xtype == etEXP )
{
buf[bufpt++] = aDigits[infop.charset];
if ( exp < 0 )
{
buf[bufpt++] = '-';
exp = -exp;
}
else
{
buf[bufpt++] = '+';
}
if ( exp >= 100 )
{
buf[bufpt++] = (char)( exp / 100 + '0' ); /* 100's digit */
exp %= 100;
}
buf[bufpt++] = (char)( exp / 10 + '0' ); /* 10's digit */
buf[bufpt++] = (char)( exp % 10 + '0' ); /* 1's digit */
}
//bufpt = 0;
/* The converted number is in buf[] and zero terminated. Output it.
** Note that the number is in the usual order, not reversed as with
** integer conversions. */
length = bufpt;//length = (int)(bufpt-buf);
bufpt = 0;
/* Special case: Add leading zeros if the flag_zeropad flag is
** set and we are not left justified */
if ( flag_zeropad && !flag_leftjustify && length < width )
{
int i;
int nPad = width - length;
for ( i = width; i >= nPad; i-- )
{
buf[bufpt + i] = buf[bufpt + i - nPad];
}
i = ( prefix != '\0' ? 1 : 0 );
while ( nPad-- != 0 )
buf[( bufpt++ ) + i] = '0';
length = width;
bufpt = 0;
}
#endif //* !defined(SQLITE_OMIT_FLOATING_POINT) */
break;
case etSIZE:
ap[0] = pAccum.nChar; // *(va_arg(ap,int*)) = pAccum.nChar;
length = width = 0;
break;
case etPERCENT:
buf[0] = '%';
bufpt = 0;
length = 1;
break;
case etCHARX:
c = (char)va_arg( ap, "char" );
buf[0] = (char)c;
if ( precision >= 0 )
{
for ( idx = 1; idx < precision; idx++ )
buf[idx] = (char)c;
length = precision;
}
else
{
length = 1;
}
bufpt = 0;
break;
case etSTRING:
case etDYNSTRING:
bufpt = 0;//
string bufStr = (string)va_arg( ap, "string" );
if ( bufStr.Length > buf.Length )
buf = new char[bufStr.Length];
bufStr.ToCharArray().CopyTo( buf, 0 );
bufpt = bufStr.Length;
if ( bufpt == 0 )
{
buf[0] = '\0';
}
else if ( xtype == etDYNSTRING )
{
// zExtra = bufpt;
}
if ( precision >= 0 )
{
for ( length = 0; length < precision && length < bufStr.Length && buf[length] != 0; length++ )
{
}
//length += precision;
}
else
{
length = sqlite3Strlen30( bufpt );
}
bufpt = 0;
break;
case etSQLESCAPE:
case etSQLESCAPE2:
case etSQLESCAPE3:
{
int i;
int j;
int k;
int n;
bool isnull;
bool needQuote;
char ch;
char q = ( ( xtype == etSQLESCAPE3 ) ? '"' : '\'' ); /* Quote character */
string escarg = (string)va_arg( ap, "char*" ) + '\0';
isnull = ( escarg == "" || escarg == "NULL\0" );
if ( isnull )
escarg = ( xtype == etSQLESCAPE2 ) ? "NULL\0" : "(NULL)\0";
k = precision;
for ( i = n = 0; k != 0 && ( ch = escarg[i] ) != 0; i++, k-- )
{
if ( ch == q )
n++;
}
needQuote = !isnull && ( xtype == etSQLESCAPE2 );
n += i + 1 + ( needQuote ? 2 : 0 );
if ( n > etBUFSIZE )
{
buf = new char[n];//bufpt = zExtra = sqlite3Malloc(n);
//if ( bufpt == 0 )
//{
// pAccum->mallocFailed = 1;
// return;
//}
bufpt = 0; //Start of Buffer
}
else
{
//bufpt = buf;
bufpt = 0; //Start of Buffer
}
j = 0;
if ( needQuote )
buf[bufpt + j++] = q;
k = i;
for ( i = 0; i < k; i++ )
{
buf[bufpt + j++] = ch = escarg[i];
if ( ch == q )
buf[bufpt + j++] = ch;
}
if ( needQuote )
buf[bufpt + j++] = q;
buf[bufpt + j] = '\0';
length = j;
/* The precision in %q and %Q means how many input characters to
** consume, not the length of the output...
** if( precision>=0 && precision<length ) length = precision; */
break;
}
case etTOKEN:
{
Token pToken = (Token)va_arg( ap, "Token" );
if ( pToken != null )
{
sqlite3StrAccumAppend( pAccum, pToken.z.ToString(), (int)pToken.n );
}
length = width = 0;
break;
}
case etSRCLIST:
{
SrcList pSrc = (SrcList)va_arg( ap, "SrcList" );
int k = (int)va_arg( ap, "int" );
SrcList_item pItem = pSrc.a[k];
Debug.Assert( k >= 0 && k < pSrc.nSrc );
if ( pItem.zDatabase != null )
{
sqlite3StrAccumAppend( pAccum, pItem.zDatabase, -1 );
sqlite3StrAccumAppend( pAccum, ".", 1 );
}
sqlite3StrAccumAppend( pAccum, pItem.zName, -1 );
length = width = 0;
break;
}
default:
{
Debug.Assert( xtype == etINVALID );
return;
}
}/* End switch over the format type */
/*
** The text of the conversion is pointed to by "bufpt" and is
** "length" characters long. The field width is "width". Do
** the output.
*/
if ( !flag_leftjustify )
{
int nspace;
nspace = width - length;// -2;
if ( nspace > 0 )
{
appendSpace( pAccum, nspace );
}
}
if ( length > 0 )
{
sqlite3StrAccumAppend( pAccum, new string( buf, bufpt, length ), length );
}
if ( flag_leftjustify )
{
int nspace;
nspace = width - length;
if ( nspace > 0 )
{
appendSpace( pAccum, nspace );
}
}
//if( zExtra ){
// sqlite3DbFree(db,ref zExtra);
//}
}/* End for loop over the format string */
} /* End of function */
public static extern int32_t va_list_test(va_list ap);
public static void va_end(va_list argp)
{
}
// First attempt
public static void va_start(va_list argp, object dontcare)
{
}