/*

Copyright (C) 2006 - 2015 Evan Teran

evan.teran@gmail.com

This program is free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation, either version 2 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program. If not, see <http://www.gnu.org/licenses/>.

*/

#include "HexStringValidator.h"

#include <QString>

#include <cctype> // for std::isxdigit

//------------------------------------------------------------------------------

// Name: HexStringValidator

// Desc: constructor

//------------------------------------------------------------------------------

HexStringValidator::HexStringValidator(QObject * parent) : QValidator(parent) {

}

//------------------------------------------------------------------------------

// Name: fixup

// Desc:

//------------------------------------------------------------------------------

void HexStringValidator::fixup(QString &input) const {

QString temp;

int index = 0;

for(QChar ch: input) {

const int c = ch.toLatin1();

if(c < 0x80 && std::isxdigit(c)) {

if(index != 0 && (index & 1) == 0) {

temp += ' ';

}

temp += ch.toUpper();

++index;

}

}

input = temp;

}

//------------------------------------------------------------------------------

// Name: validate

// Desc:

//------------------------------------------------------------------------------

QValidator::State HexStringValidator::validate(QString &input, int &pos) const {

if(!input.isEmpty()) {

// TODO: can we detect if the char which was JUST deleted

// (if any was deleted) was a space? and special case this?

// as to not have the minor bug in this case?

const int char_pos = pos - input.leftRef(pos).count(' ');

int chars = 0;

fixup(input);

pos = 0;

while(chars != char_pos) {

if(input[pos] != ' ') {

++chars;

}

++pos;

}

// favor the right side of a space

if(input[pos] == ' ') {

++pos;

}

}

return QValidator::Acceptable;

}