internal static int FormatNumber(Interp interp, char type, TclObject src, byte[] resultBytes, int cursor)
{
if (type == 'd')
{
double dvalue = TclDouble.Get(interp, src);
MemoryStream ms = new MemoryStream(resultBytes, cursor, 8);
BinaryWriter writer = new BinaryWriter(ms);
writer.Write(dvalue);
cursor += 8;
writer.Close();
ms.Close();
}
else if (type == 'f')
{
float fvalue = (float)TclDouble.Get(interp, src);
MemoryStream ms = new MemoryStream(resultBytes, cursor, 4);
BinaryWriter writer = new BinaryWriter(ms);
writer.Write(fvalue);
cursor += 4;
writer.Close();
ms.Close();
}
else
{
int value = TclInteger.Get(interp, src);
if (type == 'c')
{
resultBytes[cursor++] = (byte)value;
}
else if (type == 's')
{
resultBytes[cursor++] = (byte)value;
resultBytes[cursor++] = (byte)(value >> 8);
}
else if (type == 'S')
{
resultBytes[cursor++] = (byte)(value >> 8);
resultBytes[cursor++] = (byte)value;
}
else if (type == 'i')
{
resultBytes[cursor++] = (byte)value;
resultBytes[cursor++] = (byte)(value >> 8);
resultBytes[cursor++] = (byte)(value >> 16);
resultBytes[cursor++] = (byte)(value >> 24);
}
else if (type == 'I')
{
resultBytes[cursor++] = (byte)(value >> 24);
resultBytes[cursor++] = (byte)(value >> 16);
resultBytes[cursor++] = (byte)(value >> 8);
resultBytes[cursor++] = (byte)value;
}
}
return(cursor);
}
private static TclObject ScanNumber(byte[] src, int pos, int type) // Format character from "binary scan"
{
switch (type)
{
case 'c':
{
return(TclInteger.NewInstance((sbyte)src[pos]));
}
case 's':
{
short value = (short)((src[pos] & 0xff) + ((src[pos + 1] & 0xff) << 8));
return(TclInteger.NewInstance((int)value));
}
case 'S':
{
short value = (short)((src[pos + 1] & 0xff) + ((src[pos] & 0xff) << 8));
return(TclInteger.NewInstance((int)value));
}
case 'i':
{
int value = (src[pos] & 0xff) + ((src[pos + 1] & 0xff) << 8) + ((src[pos + 2] & 0xff) << 16) + ((src[pos + 3] & 0xff) << 24);
return(TclInteger.NewInstance(value));
}
case 'I':
{
int value = (src[pos + 3] & 0xff) + ((src[pos + 2] & 0xff) << 8) + ((src[pos + 1] & 0xff) << 16) + ((src[pos] & 0xff) << 24);
return(TclInteger.NewInstance(value));
}
case 'f':
{
MemoryStream ms = new MemoryStream(src, pos, 4, false);
BinaryReader reader = new BinaryReader(ms);
double fvalue = reader.ReadSingle();
reader.Close();
ms.Close();
return(TclDouble.NewInstance(fvalue));
}
case 'd':
{
MemoryStream ms = new MemoryStream(src, pos, 8, false);
BinaryReader reader = new BinaryReader(ms);
double dvalue = reader.ReadDouble();
reader.Close();
ms.Close();
return(TclDouble.NewInstance(dvalue));
}
}
return(null);
}
public static bool Tcl_GetDouble(Interp interp, TclObject to, out double value)
{
try
{
value = TclDouble.Get(interp, to);
return(false);
}
catch
{
value = 0;
return(true);
}
}
public static void set(TclObject tobj, double d)
// The new value for the object.
{
tobj.invalidateStringRep();
IInternalRep rep = tobj.InternalRep;
if (rep is TclDouble)
{
TclDouble tdouble = (TclDouble)rep;
tdouble.value = d;
}
else
{
tobj.InternalRep = new TclDouble(d);
}
}
public static bool Tcl_GetDoubleFromObj(Interp interp, TclObject to, out double value)
{
try
{
if (to.ToString() == "NaN")
{
value = Double.NaN;
}
else
{
value = TclDouble.Get(interp, to);
}
return(false);
}
catch
{
value = 0;
return(true);
}
}
/// <summary> Compares the order of two items in the array.
///
/// </summary>
/// <param name="obj1">first item.
/// </param>
/// <param name="obj2">second item.
/// </param>
/// <returns> 0 if they are equal, 1 if obj1 > obj2, -1 otherwise.
///
/// </returns>
/// <exception cref=""> TclException if an error occurs during sorting.
/// </exception>
private int compare(TclObject obj1, TclObject obj2)
{
int index;
int code = 0;
if (sortIndex != -1)
{
// The "-index" option was specified. Treat each object as a
// list, extract the requested element from each list, and
// compare the elements, not the lists. The special index "end"
// is signaled here with a negative index (other than -1).
TclObject obj;
if (sortIndex < -1)
{
index = TclList.getLength(sortInterp, obj1) - 1;
}
else
{
index = sortIndex;
}
obj = TclList.index(sortInterp, obj1, index);
if (obj == null)
{
throw new TclException(sortInterp, "element " + index + " missing from sublist \"" + obj1 + "\"");
}
obj1 = obj;
if (sortIndex < -1)
{
index = TclList.getLength(sortInterp, obj2) - 1;
}
else
{
index = sortIndex;
}
obj = TclList.index(sortInterp, obj2, index);
if (obj == null)
{
throw new TclException(sortInterp, "element " + index + " missing from sublist \"" + obj2 + "\"");
}
obj2 = obj;
}
switch (sortMode)
{
case ASCII:
// ATK C# CompareTo use option
// similar to -dictionary but a > A
code = System.Globalization.CultureInfo.InvariantCulture.CompareInfo.Compare(obj1.ToString(), obj2.ToString(), System.Globalization.CompareOptions.Ordinal);
// code = obj1.ToString().CompareTo(obj2.ToString());
break;
case DICTIONARY:
code = doDictionary(obj1.ToString(), obj2.ToString());
break;
case INTEGER:
try
{
int int1 = TclInteger.Get(sortInterp, obj1);
int int2 = TclInteger.Get(sortInterp, obj2);
if (int1 > int2)
{
code = 1;
}
else if (int2 > int1)
{
code = -1;
}
}
catch (TclException e1)
{
sortInterp.AddErrorInfo("\n (converting list element from string to integer)");
throw e1;
}
break;
case REAL:
try
{
double f1 = TclDouble.Get(sortInterp, obj1);
double f2 = TclDouble.Get(sortInterp, obj2);
if (f1 > f2)
{
code = 1;
}
else if (f2 > f1)
{
code = -1;
}
}
catch (TclException e2)
{
sortInterp.AddErrorInfo("\n (converting list element from string to real)");
throw e2;
}
break;
case COMMAND:
StringBuilder sbuf = new StringBuilder(sortCommand);
Util.appendElement(sortInterp, sbuf, obj1.ToString());
Util.appendElement(sortInterp, sbuf, obj2.ToString());
try
{
sortInterp.Eval(sbuf.ToString(), 0);
}
catch (TclException e3)
{
sortInterp.AddErrorInfo("\n (user-defined comparison command)");
throw e3;
}
try
{
code = TclInteger.Get(sortInterp, sortInterp.GetResult());
}
catch (TclException e)
{
sortInterp.ResetResult();
TclException e4 = new TclException(sortInterp, "comparison command returned non-numeric result");
throw e4;
}
break;
default:
throw new TclRuntimeError("Unknown sortMode " + sortMode);
}
if (sortIncreasing)
{
return(code);
}
else
{
return(-code);
}
}
private const int GENERIC = 4; // Floating or exponential,
// depending on exponent. %g
/// <summary> This procedure is invoked to process the "format" Tcl command.
/// See the user documentation for details on what it does.
///
/// The first argument to the cmdProc is the formatString. The cmdProc
/// simply copies all the chars into the sbuf until a '%' is found. At
/// this point the cmdProc parces the formatString and determines the
/// format parameters. The parcing of the formatString can be broken into
/// six possible phases:
///
/// Phase 0 - Simply Print: If the next char is %
/// Phase 1 - XPG3 Position Specifier: If the format [1-n]$ is used
/// Phase 2 - A Set of Flags: One or more of the following + -
/// [space] 0 #
/// Phase 3 - A Minimun Field Width Either [integer] or *
/// Phase 4 - A Precision If the format .[integer] or .*
/// Phase 5 - A Length Modifier If h is present
/// Phase 6 - A Conversion Character If one of the following is used
/// d u i o x X c s f E g G
///
/// Any phase can skip ahead one or more phases, but are not allowed
/// to move back to previous phases. Once the parameters are determined
/// the cmdProc calls one of three private methods that returns a fully
/// formatted string. This loop occurs for ever '%' in the formatString.
/// </summary>
public TCL.CompletionCode CmdProc(Interp interp, TclObject[] argv)
{
StringBuilder sbuf; // Stores the return value of the parsed
// format string
StrtoulResult stoul; // A return object to the strtoul call
char[] format; // The format argument is converted to a char
// array and manipulated as such
int phase; // Stores the current phase of the parsing
int width; // Minimum field width
int precision; // Field precision from field specifier
int fmtFlags; // Used to store the format flags ( #,+,etc)
int argIndex; // Index of argument to substitute next.
int fmtIndex; // Used to locate end of the format fields.
int endIndex; // Used to locate end of numerical fields.
int intValue; // Generic storage variable
long lngValue; // Store the TclInteger.get() result
double dblValue; // Store the TclDouble.get() result
bool noPercent; // Special case for speed: indicates there's
// no field specifier, just a string to copy.
bool xpgSet; // Indicates that xpg has been used for the
// particular format of the main while loop
bool gotXpg; // True means that an XPG3 %n$-style
// specifier has been seen.
bool gotSequential; // True means that a regular sequential
// (non-XPG3) conversion specifier has
// been seen.
bool useShort; // Value to be printed is short
// (half word).
bool precisionSet; // Used for f, e, and E conversions
bool cont; // Used for phase 3
if (argv.Length < 2)
{
throw new TclNumArgsException(interp, 1, argv, "formatString ?arg arg ...?");
}
argIndex = 2;
fmtIndex = 0;
gotXpg = gotSequential = false;
format = argv[1].ToString().ToCharArray();
sbuf = new StringBuilder();
// So, what happens here is to scan the format string one % group
// at a time, making many individual appends to the StringBuffer.
while (fmtIndex < format.Length)
{
fmtFlags = phase = width = 0;
noPercent = true;
xpgSet = precisionSet = useShort = false;
precision = -1;
// Append all characters to sbuf that are not used for the
// format specifier.
if (format[fmtIndex] != '%')
{
int i;
for (i = fmtIndex; (i < format.Length); i++)
{
if (format[i] == '%')
{
noPercent = false;
break;
}
}
sbuf.Append(new string(format, fmtIndex, i - fmtIndex));
fmtIndex = i;
if (noPercent)
{
break;
}
}
// If true, then a % has been indicated but we are at the end
// of the format string. Call function to throw exception.
if (fmtIndex + 1 >= format.Length)
{
errorEndMiddle(interp);
}
// Phase 0:
// Check for %%. If true then simply write a single '%'
// to the list.
checkOverFlow(interp, format, fmtIndex + 1);
if (format[fmtIndex + 1] == '%')
{
sbuf.Append("%");
fmtIndex += 2;
// Re-enter the loop
continue;
}
fmtIndex++;
checkOverFlow(interp, format, fmtIndex);
if (System.Char.IsDigit(format[fmtIndex]))
{
// Parce the format array looking for the end of
// the number.
stoul = strtoul(format, fmtIndex);
intValue = (int)stoul.value;
endIndex = stoul.Index;
if (format[endIndex] == '$')
{
if (intValue == 0)
{
errorBadIndex(interp, true);
}
// Phase 1:
// Check for an XPG3-style %n$ specification.
// Note: there must not be a mixture of XPG3
// specs and non-XPG3 specs in the same format string.
if (gotSequential)
{
errorMixedXPG(interp);
}
gotXpg = true;
xpgSet = true;
phase = 2;
fmtIndex = endIndex + 1;
argIndex = intValue + 1;
if ((argIndex < 2) || (argIndex >= argv.Length))
{
errorBadIndex(interp, gotXpg);
}
}
else
{
// Phase 3:
// Format jumped straight to phase 3; Setting
// width field. Again, verify that all format
// specifiers are sequential.
if (gotXpg)
{
errorMixedXPG(interp);
}
gotSequential = true;
if (format[fmtIndex] != '0')
{
fmtIndex = endIndex;
width = intValue;
phase = 4;
}
}
}
else
{
if (gotXpg)
{
errorMixedXPG(interp);
}
gotSequential = true;
}
// Phase 2:
// Setting the Format Flags. At this point the phase value
// can be either zero or three. Anything greater is an
// incorrect format.
if (phase < 3)
{
checkOverFlow(interp, format, fmtIndex);
char ch = format[fmtIndex];
cont = true;
while (cont)
{
switch (ch)
{
case '-':
{
fmtFlags |= LEFT_JUSTIFY;
break;
}
case '#':
{
fmtFlags |= ALT_OUTPUT;
break;
}
case '0':
{
fmtFlags |= PAD_W_ZERO;
break;
}
case ' ':
{
fmtFlags |= SPACE_OR_SIGN;
break;
}
case '+':
{
fmtFlags |= SHOW_SIGN;
break;
}
default:
{
cont = false;
}
break;
}
if (cont)
{
fmtIndex++;
checkOverFlow(interp, format, fmtIndex);
ch = format[fmtIndex];
}
}
phase = 3;
}
// Phase 3:
// Setting width field. Partially redundant code from the
// Phase 1 if/else statement, but this is made to run fast.
checkOverFlow(interp, format, fmtIndex);
if (System.Char.IsDigit(format[fmtIndex]))
{
stoul = strtoul(format, fmtIndex);
width = (int)stoul.value;
fmtIndex = stoul.Index;
}
else if (format[fmtIndex] == '*')
{
if (argv.Length > argIndex)
{
width = TclInteger.Get(interp, argv[argIndex]);
if (width < 0)
{
width = -width;
fmtFlags |= LEFT_JUSTIFY;
}
argIndex++;
fmtIndex++;
}
}
// Phase 4:
// Setting the precision field.
checkOverFlow(interp, format, fmtIndex);
if (format[fmtIndex] == '.')
{
fmtIndex++;
checkOverFlow(interp, format, fmtIndex);
if (System.Char.IsDigit(format[fmtIndex]))
{
precisionSet = true;
stoul = strtoul(format, fmtIndex);
precision = (int)stoul.value;
fmtIndex = stoul.Index;
}
else if (format[fmtIndex] == '*')
{
if (argv.Length > argIndex)
{
precisionSet = true;
precision = TclInteger.Get(interp, argv[argIndex]);
argIndex++;
fmtIndex++;
checkOverFlow(interp, format, fmtIndex);
}
}
else
{
// Format field had a '.' without an integer or '*'
// preceeding it (eg %2.d or %2.-5d)
errorBadField(interp, format[fmtIndex]);
}
}
// Phase 5:
// Setting the length modifier.
if (format[fmtIndex] == 'h')
{
fmtIndex++;
checkOverFlow(interp, format, fmtIndex);
useShort = true;
}
else if (format[fmtIndex] == 'l')
{
fmtIndex++;
checkOverFlow(interp, format, fmtIndex);
// 'l' is ignored, but should still be processed.
}
if ((argIndex < 2) || (argIndex >= argv.Length))
{
errorBadIndex(interp, gotXpg);
}
// Phase 6:
// Setting conversion field.
// At this point, variables are initialized as follows:
//
// width The specified field width. This is always
// non-negative. Zero is the default.
// precision The specified precision. The default
// is -1.
// argIndex The argument index from the argv array
// for the appropriate arg.
// fmtFlags The format flags are set via bitwise
// operations. Below are the bits
// and their meanings.
// ALT_OUTPUT set if a '#' is present.
// SHOW_SIGN set if a '+' is present.
// SPACE_OR_SIGN set if a ' ' is present.
// LEFT_JUSTIFY set if a '-' is present or if the
// field width was negative.
// PAD_W_ZERO set if a '0' is present
string strValue = "";
char index = format[fmtIndex];
switch (index)
{
case 'u':
case 'd':
case 'o':
case 'x':
case 'X':
case 'i':
{
if (index == 'u')
{
// Since Java does not provide unsigned ints we need to
// make our own. If the value is negative we need to
// clear out all of the leading bits from the 33rd bit
// and on. The result is a long value equal to that
// of an unsigned int.
lngValue = (long)TclInteger.Get(interp, argv[argIndex]);
if (lngValue < 0)
{
lngValue = (lngValue << 32);
lngValue = (SupportClass.URShift(lngValue, 32));
}
}
else
{
fmtFlags |= SIGNED_VALUE;
lngValue = (long)TclInteger.Get(interp, argv[argIndex]);
}
// If the useShort option has been selected, we need
// to clear all but the first 16 bits.
if (useShort)
{
lngValue = (lngValue << 48);
lngValue = (lngValue >> 48);
}
if (index == 'o')
{
sbuf.Append(cvtLngToStr(lngValue, width, precision, fmtFlags, 8, "01234567".ToCharArray(), "0"));
}
else if (index == 'x')
{
sbuf.Append(cvtLngToStr(lngValue, width, precision, fmtFlags, 16, "0123456789abcdef".ToCharArray(), "0x"));
}
else if (index == 'X')
{
sbuf.Append(cvtLngToStr(lngValue, width, precision, fmtFlags, 16, "0123456789ABCDEF".ToCharArray(), "0X"));
}
else
{
sbuf.Append(cvtLngToStr(lngValue, width, precision, fmtFlags, 10, "0123456789".ToCharArray(), ""));
}
break;
}
case 'c':
{
intValue = 0;
char[] arr = new char[] { (char)TclInteger.Get(interp, argv[argIndex]) };
strValue = new string(arr);
sbuf.Append(cvtStrToStr(strValue, width, precision, fmtFlags));
break;
}
case 's':
{
strValue = argv[argIndex].ToString();
sbuf.Append(cvtStrToStr(strValue, width, precision, fmtFlags));
break;
}
case 'f':
{
dblValue = TclDouble.Get(interp, argv[argIndex]);
sbuf.Append(cvtDblToStr(dblValue, width, precision, fmtFlags, 10, "0123456789".ToCharArray(), "", FLOAT));
break;
}
case 'e':
{
dblValue = TclDouble.Get(interp, argv[argIndex]);
sbuf.Append(cvtDblToStr(dblValue, width, precision, fmtFlags, 10, "e".ToCharArray(), "", EXP));
break;
}
case 'E':
{
dblValue = TclDouble.Get(interp, argv[argIndex]);
sbuf.Append(cvtDblToStr(dblValue, width, precision, fmtFlags, 10, "E".ToCharArray(), "", EXP));
break;
}
case 'g':
{
dblValue = TclDouble.Get(interp, argv[argIndex]);
sbuf.Append(cvtDblToStr(dblValue, width, precision, fmtFlags, 10, "e".ToCharArray(), "", GENERIC));
break;
}
case 'G':
{
dblValue = TclDouble.Get(interp, argv[argIndex]);
sbuf.Append(cvtDblToStr(dblValue, width, precision, fmtFlags, 10, "E".ToCharArray(), "", GENERIC));
break;
}
default:
{
errorBadField(interp, format[fmtIndex]);
}
break;
}
fmtIndex++;
argIndex++;
}
interp.SetResult(sbuf.ToString());
return(TCL.CompletionCode.RETURN);
}
/*
*-----------------------------------------------------------------------------
*
* cmdProc --
*
* This procedure is invoked to process the "lsearch" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* None.
*
* Side effects:
* See the user documentation.
*
*-----------------------------------------------------------------------------
*/
public TCL.CompletionCode CmdProc(Interp interp, TclObject[] objv)
{
int mode = GLOB;
int dataType = ASCII;
bool isIncreasing = true;
TclObject pattern;
TclObject list;
if (objv.Length < 3)
{
throw new TclNumArgsException(interp, 1, objv, "?options? list pattern");
}
for (int i = 1; i < objv.Length - 2; i++)
{
switch (TclIndex.Get(interp, objv[i], options, "option", 0))
{
case LSEARCH_ASCII:
dataType = ASCII;
break;
case LSEARCH_DECREASING:
isIncreasing = false;
break;
case LSEARCH_DICTIONARY:
dataType = DICTIONARY;
break;
case LSEARCH_EXACT:
mode = EXACT;
break;
case LSEARCH_INCREASING:
isIncreasing = true;
break;
case LSEARCH_INTEGER:
dataType = INTEGER;
break;
case LSEARCH_GLOB:
mode = GLOB;
break;
case LSEARCH_REAL:
dataType = REAL;
break;
case LSEARCH_REGEXP:
mode = REGEXP;
break;
case LSEARCH_SORTED:
mode = SORTED;
break;
}
}
// Make sure the list argument is a list object and get its length and
// a pointer to its array of element pointers.
TclObject[] listv = TclList.getElements(interp, objv[objv.Length - 2]);
TclObject patObj = objv[objv.Length - 1];
string patternBytes = null;
int patInt = 0;
double patDouble = 0.0;
int length = 0;
if (mode == EXACT || mode == SORTED)
{
switch (dataType)
{
case ASCII:
case DICTIONARY:
patternBytes = patObj.ToString();
length = patternBytes.Length;
break;
case INTEGER:
patInt = TclInteger.Get(interp, patObj);
break;
case REAL:
patDouble = TclDouble.Get(interp, patObj);
break;
}
}
else
{
patternBytes = patObj.ToString();
length = patternBytes.Length;
}
// Set default index value to -1, indicating failure; if we find the
// item in the course of our search, index will be set to the correct
// value.
int index = -1;
if (mode == SORTED)
{
// If the data is sorted, we can do a more intelligent search.
int match = 0;
int lower = -1;
int upper = listv.Length;
while (lower + 1 != upper)
{
int i = (lower + upper) / 2;
switch (dataType)
{
case ASCII:
{
string bytes = listv[i].ToString();
match = patternBytes.CompareTo(bytes);
break;
}
case DICTIONARY:
{
string bytes = listv[i].ToString();
match = DictionaryCompare(patternBytes, bytes);
break;
}
case INTEGER:
{
int objInt = TclInteger.Get(interp, listv[i]);
if (patInt == objInt)
{
match = 0;
}
else if (patInt < objInt)
{
match = -1;
}
else
{
match = 1;
}
break;
}
case REAL:
{
double objDouble = TclDouble.Get(interp, listv[i]);
if (patDouble == objDouble)
{
match = 0;
}
else if (patDouble < objDouble)
{
match = -1;
}
else
{
match = 1;
}
break;
}
}
if (match == 0)
{
// Normally, binary search is written to stop when it
// finds a match. If there are duplicates of an element in
// the list, our first match might not be the first occurance.
// Consider: 0 0 0 1 1 1 2 2 2
// To maintain consistancy with standard lsearch semantics,
// we must find the leftmost occurance of the pattern in the
// list. Thus we don't just stop searching here. This
// variation means that a search always makes log n
// comparisons (normal binary search might "get lucky" with
// an early comparison).
index = i;
upper = i;
}
else if (match > 0)
{
if (isIncreasing)
{
lower = i;
}
else
{
upper = i;
}
}
else
{
if (isIncreasing)
{
upper = i;
}
else
{
lower = i;
}
}
}
}
else
{
for (int i = 0; i < listv.Length; i++)
{
bool match = false;
switch (mode)
{
case SORTED:
case EXACT:
{
switch (dataType)
{
case ASCII:
{
string bytes = listv[i].ToString();
int elemLen = bytes.Length;
if (length == elemLen)
{
match = bytes.Equals(patternBytes);
}
break;
}
case DICTIONARY:
{
string bytes = listv[i].ToString();
match = (DictionaryCompare(bytes, patternBytes) == 0);
break;
}
case INTEGER:
{
int objInt = TclInteger.Get(interp, listv[i]);
match = (objInt == patInt);
break;
}
case REAL:
{
double objDouble = TclDouble.Get(interp, listv[i]);
match = (objDouble == patDouble);
break;
}
}
break;
}
case GLOB:
{
match = Util.StringMatch(listv[i].ToString(), patternBytes);
break;
}
case REGEXP:
{
match = Util.regExpMatch(interp, listv[i].ToString(), patObj);
break;
}
}
if (match)
{
index = i;
break;
}
}
}
interp.SetResult(index);
return(TCL.CompletionCode.RETURN);
}
public static TclObject Tcl_NewDoubleObj(double value)
{
return(TclDouble.NewInstance(value));
}
/// <summary> This procedure is invoked to process the "scan" Tcl command.
/// See the user documentation for details on what it does.
///
/// Each iteration of the cmdProc compares the scanArr's current index to
/// the frmtArr's index. If the chars are equal then the indicies are
/// incremented. If a '%' is found in the frmtArr, the formatSpecifier
/// is parced from the frmtArr, the corresponding value is extracted from
/// the scanArr, and that value is set in the Tcl Interp.
///
/// If the chars are not equal, or the conversion fails, the boolean
/// scanArrDone is set to true, indicating the scanArr is not to be
/// parced and no new values are to be set. However the frmtArr is still
/// parced because of the priority of error messages. In the C version
/// of Tcl, bad format specifiers throw errors before incorrect argument
/// input or other scan errors. Thus we need to parce the entire frmtArr
/// to verify correct formating. This is dumb and inefficient but it is
/// consistent w/ the current C-version of Tcl.
/// </summary>
public TCL.CompletionCode CmdProc(Interp interp, TclObject[] argv)
{
if (argv.Length < 3)
{
throw new TclNumArgsException(interp, 1, argv, "string format ?varName varName ...?");
}
;
StrtoulResult strul; // Return value for parcing the scanArr when
// extracting integers/longs
StrtodResult strd;
; // Return value for parcing the scanArr when
// extracting doubles
char[] scanArr; // Array containing parce info
char[] frmtArr; // Array containing info on how to
// parse the scanArr
int scanIndex; // Index into the scan array
int frmtIndex; // Index into the frmt array
int tempIndex; // Temporary index holder
int argIndex; // Index into the current arg
int width; // Stores the user specified result width
int base_; // Base of the integer being converted
int numUnMatched; // Number of fields actually set.
int numMatched; // Number of fields actually matched.
int negateScan; // Mult by result, set to -1 if true
int i; // Generic variable
char ch; // Generic variable
bool cont; // Used in loops to indicate when to stop
bool scanOK; // Set to false if strtoul/strtod fails
bool scanArrDone; // Set to false if strtoul/strtod fails
bool widthFlag; // True is width is specified
bool discardFlag; // If a "%*" is in the formatString dont
// write output to arg
scanArr = argv[1].ToString().ToCharArray();
frmtArr = argv[2].ToString().ToCharArray();
width = base_ = numMatched = numUnMatched = 0;
scanIndex = frmtIndex = 0;
scanOK = true;
scanArrDone = false;
argIndex = 3;
// Skip all (if any) of the white space before getting to a char
frmtIndex = skipWhiteSpace(frmtArr, frmtIndex);
// Search through the frmtArr. If the next char is a '%' parse the
// next chars and determine the type (if any) of the format specifier.
// If the scanArr has been fully searched, do nothing but incerment
// "numUnMatched". The reason to continue the frmtArr search is for
// consistency in output. Previously scan format errors were reported
// before arg input mismatch, so this maintains the same level of error
// checking.
while (frmtIndex < frmtArr.Length)
{
discardFlag = widthFlag = false;
negateScan = 1;
cont = true;
// Parce the format array and read in the correct value from the
// scan array. When the correct value is retrieved, set the
// variable (from argv) in the interp.
if (frmtArr[frmtIndex] == '%')
{
frmtIndex++;
checkOverFlow(interp, frmtArr, frmtIndex);
// Two '%'s in a row, do nothing...
if (frmtArr[frmtIndex] == '%')
{
frmtIndex++;
scanIndex++;
continue;
}
// Check for a discard field flag
if (frmtArr[frmtIndex] == '*')
{
discardFlag = true;
frmtIndex++;
checkOverFlow(interp, frmtArr, frmtIndex);
}
// Check for a width field and accept the 'h', 'l', 'L'
// characters, but do nothing with them.
//
// Note: The order of the width specifier and the other
// chars is unordered, so we need to iterate until all
// of the specifiers are identified.
while (cont)
{
cont = false;
switch (frmtArr[frmtIndex])
{
case 'h':
case 'l':
case 'L':
{
// Just ignore these values
frmtIndex++;
cont = true;
break;
}
default:
{
if (System.Char.IsDigit(frmtArr[frmtIndex]))
{
strul = Util.Strtoul(new string(frmtArr), frmtIndex, base_);
frmtIndex = strul.Index;
width = (int)strul.value;
widthFlag = true;
cont = true;
}
}
break;
}
checkOverFlow(interp, frmtArr, frmtIndex);
}
// On all conversion specifiers except 'c', move the
// scanIndex to the next non-whitespace.
ch = frmtArr[frmtIndex];
if ((ch != 'c') && (ch != '[') && !scanArrDone)
{
scanIndex = skipWhiteSpace(scanArr, scanIndex);
}
if (scanIndex >= scanArr.Length)
{
scanArrDone = true;
}
if ((scanIndex < scanArr.Length) && (ch != 'c') && (ch != '['))
{
// Since strtoul dosent take signed numbers, make the
// value positive and store the sign.
if (scanArr[scanIndex] == '-')
{
negateScan = -1;
scanIndex++;
width--;
}
else if (scanArr[scanIndex] == '+')
{
scanIndex++;
width--;
}
// The width+scanIndex might be greater than
// the scanArr so we need to re-adjust when this
// happens.
if (widthFlag && (width + scanIndex > scanArr.Length))
{
width = scanArr.Length - scanIndex;
}
}
if (scanIndex >= scanArr.Length)
{
scanArrDone = true;
}
// Foreach iteration we want strul and strd to be
// null since we error check on this case.
strul = null;
strd = null;
switch (ch)
{
case 'd':
case 'o':
case 'x':
{
if (!scanArrDone)
{
if (ch == 'd')
{
base_ = 10;
}
else if (ch == 'o')
{
base_ = 8;
}
else
{
base_ = 16;
}
// If the widthFlag is set then convert only
// "width" characters to an ascii representation,
// else read in until the end of the integer. The
// scanIndex is moved to the point where we stop
// reading in.
if (widthFlag)
{
strul = Util.Strtoul(new string(scanArr, 0, width + scanIndex), scanIndex, base_);
}
else
{
strul = Util.Strtoul(new string(scanArr), scanIndex, base_);
}
if (strul.errno != 0)
{
scanOK = false;
break;
}
scanIndex = strul.Index;
if (!discardFlag)
{
i = (int)strul.value * negateScan;
if (argIndex == argv.Length)
{
numMatched--;
}
else
{
testAndSetVar(interp, argv, argIndex++, TclInteger.NewInstance(i));
}
}
}
break;
}
case 'c':
{
if (widthFlag)
{
errorCharFieldWidth(interp);
}
if (!discardFlag && !scanArrDone)
{
testAndSetVar(interp, argv, argIndex++, TclInteger.NewInstance(scanArr[scanIndex++]));
}
break;
}
case 's':
{
if (!scanArrDone)
{
// If the widthFlag is set then read only "width"
// characters into the string, else read in until
// the first whitespace or endArr is found. The
// scanIndex is moved to the point where we stop
// reading in.
tempIndex = scanIndex;
if (!widthFlag)
{
width = scanArr.Length;
}
for (i = 0; (scanIndex < scanArr.Length) && (i < width); i++)
{
ch = scanArr[scanIndex];
if ((ch == ' ') || (ch == '\n') || (ch == '\r') || (ch == '\t') || (ch == '\f'))
{
break;
}
scanIndex++;
}
if (!discardFlag)
{
string str = new string(scanArr, tempIndex, scanIndex - tempIndex);
testAndSetVar(interp, argv, argIndex++, TclString.NewInstance(str));
}
}
break;
}
case 'e':
case 'f':
case 'g':
{
if (!scanArrDone)
{
// If the wisthFlag is set then read only "width"
// characters into the string, else read in until
// the first whitespace or endArr is found. The
// scanIndex is moved to the point where we stop
// reading in.
if (widthFlag)
{
strd = Util.Strtod(new string(scanArr, 0, width + scanIndex), scanIndex);
}
else
{
strd = Util.Strtod(new string(scanArr), scanIndex);
}
if (strd.errno != 0)
{
scanOK = false;
break;
}
scanIndex = strd.index;
if (!discardFlag)
{
double d = strd.value * negateScan;
testAndSetVar(interp, argv, argIndex++, TclDouble.NewInstance(d));
}
}
break;
}
case '[':
{
bool charMatchFound = false;
bool charNotMatch = false;
char[] tempArr;
int startIndex;
int endIndex;
string unmatched = "unmatched [ in format string";
if ((++frmtIndex) >= frmtArr.Length)
{
throw new TclException(interp, unmatched);
}
if (frmtArr[frmtIndex] == '^')
{
charNotMatch = true;
frmtIndex += 2;
}
else
{
frmtIndex++;
}
tempIndex = frmtIndex - 1;
if (frmtIndex >= frmtArr.Length)
{
throw new TclException(interp, unmatched);
}
// Extract the list of chars for matching.
while (frmtArr[frmtIndex] != ']')
{
if ((++frmtIndex) >= frmtArr.Length)
{
throw new TclException(interp, unmatched);
}
}
tempArr = new string(frmtArr, tempIndex, frmtIndex - tempIndex).ToCharArray();
startIndex = scanIndex;
if (charNotMatch)
{
// Format specifier contained a '^' so interate
// until one of the chars in tempArr is found.
while (scanOK && !charMatchFound)
{
if (scanIndex >= scanArr.Length)
{
scanOK = false;
break;
}
for (i = 0; i < tempArr.Length; i++)
{
if (tempArr[i] == scanArr[scanIndex])
{
charMatchFound = true;
break;
}
}
if (widthFlag && ((scanIndex - startIndex) >= width))
{
break;
}
if (!charMatchFound)
{
scanIndex++;
}
}
}
else
{
// Iterate until the char in the scanArr is not
// in the tempArr.
charMatchFound = true;
while (scanOK && charMatchFound)
{
if (scanIndex >= scanArr.Length)
{
scanOK = false;
break;
}
charMatchFound = false;
for (i = 0; i < tempArr.Length; i++)
{
if (tempArr[i] == scanArr[scanIndex])
{
charMatchFound = true;
break;
}
}
if (widthFlag && (scanIndex - startIndex) >= width)
{
break;
}
if (charMatchFound)
{
scanIndex++;
}
}
}
// Indicates nothing was found.
endIndex = scanIndex - startIndex;
if (endIndex <= 0)
{
scanOK = false;
break;
}
if (!discardFlag)
{
string str = new string(scanArr, startIndex, endIndex);
testAndSetVar(interp, argv, argIndex++, TclString.NewInstance(str));
}
break;
}
default:
{
errorBadField(interp, ch);
}
break;
}
// As long as the scan was successful (scanOK), the format
// specifier did not contain a '*' (discardFlag), and
// we are not at the end of the scanArr (scanArrDone);
// increment the num of vars set in the interp. Otherwise
// increment the number of valid format specifiers.
if (scanOK && !discardFlag && !scanArrDone)
{
numMatched++;
}
else if ((scanArrDone || !scanOK) && !discardFlag)
{
numUnMatched++;
}
frmtIndex++;
}
else if (scanIndex < scanArr.Length && scanArr[scanIndex] == frmtArr[frmtIndex])
{
// No '%' was found, but the characters matched
scanIndex++;
frmtIndex++;
}
else
{
// No '%' found and the characters int frmtArr & scanArr
// did not match.
frmtIndex++;
}
}
// The numMatched is the return value: a count of the num of vars set.
// While the numUnMatched is the number of formatSpecifiers that
// passed the parsing stage, but did not match anything in the scanArr.
if ((numMatched + numUnMatched) != (argv.Length - 3))
{
errorDiffVars(interp);
}
interp.SetResult(TclInteger.NewInstance(numMatched));
return(TCL.CompletionCode.RETURN);
}