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// fgcharcomp.cc
#include "fgcharcomp.h"
#ifndef _FGSTRING_H
#include "fgstring.h"
#endif
#include <ctype.h>
FGCharacterComponent::FGCharacterComponent(bool isOptional)
{
mIsOptional = isOptional;
}
FGCharacterComponent::~FGCharacterComponent()
{
}
bool
FGCharacterComponent::MatchAndRankComponent(FGString& fnameRemainder,
int* pMatchVal) const
{
// Initialize to be safe
*pMatchVal = -1;
// Sanity checks
if (fnameRemainder.GetLength() < 1 || !isalpha(fnameRemainder[0])) {
// May or may not be a "match" or such. If the character component
// is NOT optional, it's not match. Otherwise it IS a match, with
// minimal value
if (!mIsOptional)
{
return false;
}
else
{
*pMatchVal = 0;
return true;
}
}
// The value returned will actually not be zero based, it will
// be ASCII "A" based (65??)
// It is of no conseqence
*pMatchVal = toupper(fnameRemainder[0]);
// Chop off the digits we consumed
int charsLeft = fnameRemainder.GetLength() - 1;
FGString bitLeft = fnameRemainder.Right(charsLeft);
fnameRemainder = bitLeft;
return true;
}
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