key.cpp

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#include <cctype>
#include "strutils.h"
#include "key.h"
#include "keyqueue.h"  // from cmu package

Key::Key()
  : myChar(0),
    myKind(ascii)
{

}

Key::Key(char ch)
  : myChar(ch),
    myKind(ascii)
{

}

Key::Key(char ch, Key::Kind k)
  : myChar(ch),
    myKind(k)
{

}


bool operator == (const Key& lhs, const Key& rhs)
{
    return lhs.aschar() == rhs.aschar() &&
           lhs.getKind() == rhs.getKind();
}

bool operator != (const Key& lhs, const Key& rhs)
{
    return ! (lhs == rhs);
}

Key::Kind Key::getKind() const
{
    return myKind;
}

bool Key::isnothing() const
{
    return myKind == none;
}

bool Key::isfunction() const
{
    return myKind == function;
}

bool Key::isarrow() const
{
    return myKind == arrow;
}

bool Key::isescape() const
{
    return myKind == escape;
}

bool Key::iscontrol() const
{
    return myKind == ascii && iscntrl(myChar);
}

bool Key::isasc() const
{
    return myKind == ascii;
}

char Key::aschar() const
{
    return myChar;
}

bool Key::isleftarrow() const
{
    return myKind == arrow && myChar == 4;
}

bool Key::isrightarrow() const
{
    return myKind == arrow && myChar == 6;
}

bool Key::isuparrow() const
{
    return myKind == arrow && myChar == 8;
}

bool Key::isdownarrow() const
{
    return myKind == arrow && myChar == 2;
}

bool Key::ishome() const
{
    return myKind == arrow && myChar == 7;
}

bool Key::isend() const
{
    return myKind == arrow && myChar == 1;
}

bool Key::ispageup() const
{
    return myKind == arrow && myChar == 9;
}

bool Key::ispagedown() const
{
    return myKind == arrow && myChar == 3;
}

bool Key::iscenter() const
{
    return myKind == arrow && myChar == 5;
}

int Key::funkey() const
{
    if (myKind != function) return -1;
    return myChar;
}

string Key::tostring() const
{
    static string arrowkeys[] =
    {
        "dummy","end","down","pagedown","left","center",
        "right","home","up","pageup"
    };
    
    if (isasc() && isprint(myChar)) 
        return string("") + myChar;
    if (isfunction())
        return string("function F") + ::tostring(myChar);
    if (isarrow())
        return string("arrow ") + arrowkeys[myChar];
    if (isescape())
        return "escape";
    if (iscontrol())
        return string("control ") + char('a'+myChar-1);
    return string("") + myChar;
}

ostream& operator << (ostream& output, const Key& k)
{
    output << k.tostring();
    return output;
}