File indexing completed on 2024-05-12 05:10:17
0001 /*************************************************************************** 0002 Copyright (C) 2008-2020 Robby Stephenson <robby@periapsis.org> 0003 ***************************************************************************/ 0004 0005 /*************************************************************************** 0006 * * 0007 * This program is free software; you can redistribute it and/or * 0008 * modify it under the terms of the GNU General Public License as * 0009 * published by the Free Software Foundation; either version 2 of * 0010 * the License or (at your option) version 3 or any later version * 0011 * accepted by the membership of KDE e.V. (or its successor approved * 0012 * by the membership of KDE e.V.), which shall act as a proxy * 0013 * defined in Section 14 of version 3 of the license. * 0014 * * 0015 * This program is distributed in the hope that it will be useful, * 0016 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 0017 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 0018 * GNU General Public License for more details. * 0019 * * 0020 * You should have received a copy of the GNU General Public License * 0021 * along with this program. If not, see <http://www.gnu.org/licenses/>. * 0022 * * 0023 ***************************************************************************/ 0024 0025 #include "lccnvalidator.h" 0026 #include "../tellico_debug.h" 0027 0028 using Tellico::LCCNValidator; 0029 0030 LCCNValidator::LCCNValidator(QObject* parent_) : QRegularExpressionValidator(parent_) { 0031 QRegularExpression rx(QLatin1String("[a-z ]{0,3}" 0032 "(" 0033 "\\d{2}-?\\d{1,6}" 0034 "|" 0035 "\\d{4}-?\\d{1,6}" 0036 ")" 0037 " ?\\w*")); 0038 setRegularExpression(rx); 0039 } 0040 0041 // static 0042 QString LCCNValidator::formalize(const QString& value_) { 0043 QString value = value_.simplified(); 0044 // remove spaces 0045 value.remove(QLatin1Char(' ')); 0046 // remove everything after the forward slash 0047 value = value.section(QLatin1Char('/'), 0, 0); 0048 0049 const int len = value_.length(); 0050 // first remove alpha prefix 0051 QString alpha; 0052 for(int pos = 0; pos < len; ++pos) { 0053 QChar c = value.at(pos); 0054 if(c.isNumber()) { 0055 break; 0056 } 0057 alpha += value.at(pos); 0058 } 0059 QString afterAlpha = value.mid(alpha.length()); 0060 alpha = alpha.trimmed(); // possible to have a space at the end 0061 0062 QString year; 0063 QString serial; 0064 // have to be able to differentiate 2 and 4-digit years, first check for hyphen position 0065 int pos = afterAlpha.indexOf(QLatin1Char('-')); 0066 if(pos > -1) { 0067 year = afterAlpha.section(QLatin1Char('-'), 0, 0); 0068 serial = afterAlpha.section(QLatin1Char('-'), 1); 0069 } else { 0070 // make two assumptions, the user will never have a book from the year 1920 0071 // or from any year after 2100. Reasonable, right? 0072 // so if the string starts with '20' we take the first 4 digits as the year 0073 // otherwise the first 2 0074 if(afterAlpha.startsWith(QLatin1String("20"))) { 0075 year = afterAlpha.left(4); 0076 serial = afterAlpha.mid(4); 0077 } else { 0078 year = afterAlpha.left(2); 0079 serial = afterAlpha.mid(2); 0080 } 0081 } 0082 0083 // now check for non digits in the serial 0084 pos = 0; 0085 for( ; pos < serial.length() && serial.at(pos).isNumber(); ++pos) { ; } 0086 QString suffix = serial.mid(pos); 0087 serial = serial.left(pos); 0088 // serial must be left-padded with zeros to 6 characters 0089 serial = serial.rightJustified(6, QLatin1Char('0')); 0090 return alpha + year + serial + suffix; 0091 }