1 files changed, 74 insertions, 0 deletions
diff --git a/src/lccnvalidator.cpp b/src/lccnvalidator.cpp
new file mode 100644
index 0000000..8c47931
--- /dev/null
+++ b/src/lccnvalidator.cpp
@@ -0,0 +1,74 @@
+/***************************************************************************
+    copyright            : (C) 2008 by Robby Stephenson
+    email                : robby@periapsis.org
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of version 2 of the GNU General Public License as  *
+ *   published by the Free Software Foundation;                            *
+ *                                                                         *
+ ***************************************************************************/
+
+#include "lccnvalidator.h"
+#include "tellico_debug.h"
+
+using Tellico::LCCNValidator;
+
+LCCNValidator::LCCNValidator(QObject* parent_) : QRegExpValidator(parent_) {
+  QRegExp rx(QString::fromLatin1("[a-z ]{0,3}"
+                                  "("
+                                  "\\d{2}-?\\d{1,6}"
+                                  "|"
+                                  "\\d{4}-?\\d{1,6}"
+                                  ")"
+                                  " ?\\w*"));
+  setRegExp(rx);
+}
+
+// static
+QString LCCNValidator::formalize(const QString& value_) {
+  const int len = value_.length();
+  // first remove alpha prefix
+  QString alpha;
+  for(int pos = 0; pos < len; ++pos) {
+    QChar c = value_.at(pos);
+    if(c.isNumber()) {
+      break;
+    }
+    alpha += value_.at(pos);
+  }
+  QString afterAlpha = value_.mid(alpha.length());
+  alpha = alpha.stripWhiteSpace(); // possible to have a space at the end
+
+  QString year;
+  QString serial;
+  // have to be able to differentiate 2 and 4-digit years, first check for hyphen position
+  int pos = afterAlpha.find('-');
+  if(pos > -1) {
+    year = afterAlpha.section('-', 0, 0);
+    serial = afterAlpha.section('-', 1);
+  } else {
+    // make two assumptions, the user will never have a book from the year 1920
+    // or from any year after 2100. Reasonable, right?
+    // so if the string starts with '20' we take the first 4 digits as the year
+    // otherwise the first 2
+    if(afterAlpha.startsWith(QString::fromLatin1("20"))) {
+      year = afterAlpha.left(4);
+      serial = afterAlpha.mid(4);
+    } else {
+      year = afterAlpha.left(2);
+      serial = afterAlpha.mid(2);
+    }
+  }
+
+  // now check for non digits in the serial
+  pos = 0;
+  for( ; pos < serial.length() && serial.at(pos).isNumber(); ++pos) { ; }
+  QString suffix = serial.mid(pos);
+  serial = serial.left(pos);
+  // serial must be left-padded with zeros to 6 characters
+  serial = serial.rightJustify(6, '0');
+  return alpha + year + serial + suffix;
+}