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75 lines
2.7 KiB
75 lines
2.7 KiB
/***************************************************************************
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copyright : (C) 2008 by Robby Stephenson
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email : robby@periapsis.org
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of version 2 of the GNU General Public License as *
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* published by the Free Software Foundation; *
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* *
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***************************************************************************/
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#include "lccnvalidator.h"
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#include "tellico_debug.h"
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using Tellico::LCCNValidator;
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LCCNValidator::LCCNValidator(TQObject* parent_) : TQRegExpValidator(parent_) {
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TQRegExp rx(TQString::fromLatin1("[a-z ]{0,3}"
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"("
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"\\d{2}-?\\d{1,6}"
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"|"
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"\\d{4}-?\\d{1,6}"
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")"
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" ?\\w*"));
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setRegExp(rx);
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}
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// static
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TQString LCCNValidator::formalize(const TQString& value_) {
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const int len = value_.length();
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// first remove alpha prefix
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TQString alpha;
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for(int pos = 0; pos < len; ++pos) {
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TQChar c = value_.at(pos);
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if(c.isNumber()) {
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break;
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}
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alpha += value_.at(pos);
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}
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TQString afterAlpha = value_.mid(alpha.length());
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alpha = alpha.stripWhiteSpace(); // possible to have a space at the end
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TQString year;
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TQString serial;
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// have to be able to differentiate 2 and 4-digit years, first check for hyphen position
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int pos = afterAlpha.find('-');
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if(pos > -1) {
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year = afterAlpha.section('-', 0, 0);
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serial = afterAlpha.section('-', 1);
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} else {
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// make two assumptions, the user will never have a book from the year 1920
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// or from any year after 2100. Reasonable, right?
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// so if the string starts with '20' we take the first 4 digits as the year
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// otherwise the first 2
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if(afterAlpha.startsWith(TQString::fromLatin1("20"))) {
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year = afterAlpha.left(4);
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serial = afterAlpha.mid(4);
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} else {
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year = afterAlpha.left(2);
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serial = afterAlpha.mid(2);
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}
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}
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// now check for non digits in the serial
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pos = 0;
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for( ; pos < static_cast<int>(serial.length()) && serial.at(pos).isNumber(); ++pos) { ; }
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TQString suffix = serial.mid(pos);
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serial = serial.left(pos);
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// serial must be left-padded with zeros to 6 characters
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serial = serial.rightJustify(6, '0');
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return alpha + year + serial + suffix;
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}
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