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149 lines
5.4 KiB
149 lines
5.4 KiB
/***************************************************************************
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copyright : (C) 2002-2006 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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#ifndef ISBNVALIDATOR_H
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#define ISBNVALIDATOR_H
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#include <tqvalidator.h>
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namespace Tellico {
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/**
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* @author Robby Stephenson
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*
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* @see http://www.isbn.org/standards/home/isbn/international/hyphenation-instructions.asp
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* @see http://www.eblong.com/zarf/bookscan/
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* @see http://doc.trolltech.com/qq/qq01-seriously-weird-qregexp.html
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*/
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class ISBNValidator : public TQValidator {
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public:
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ISBNValidator(TQObject* parent, const char* name=0);
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/**
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* Certain conditions are checked. Character, length and position
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* restrictions are checked. Certain cases where the user is deleting
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* characters are caught and compensated for. The string is then passed to
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* @ref fixup. Finally, the text is @ref Valid if it is a certain length and
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* @ref Intermediate if not.
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*
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* @param input The text to validate
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* @param pos The position of the cursor
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* @return The condition of the text
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*/
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virtual TQValidator::State validate(TQString& input, int& pos) const;
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/**
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* The input string is examined. Hyphens are inserted appropriately,
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* and the checksum is calculated.
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*
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* For correct presentation, the 10 digits of an ISBN must
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* be divided, by hyphens, into four parts:
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* @li Part 1: The country or group of countries identifier
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* @li Part 2: The publisher identifier
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* @li Part 3: The title identifier
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* @li Part 4: The check digit
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* For details
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* @see http://www.isbn.org/standards/home/isbn/international/hyphenation-instructions.asp
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* For info on group codes
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* @see http://www.isbn.spk-berlin.de/html/prefix/allpref.htm
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* For info on French language publisher codes
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* @see http://www.afnil.org
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* <pre>
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* Group Identifiers First Hyphen After
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* -----------------------------------------
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* 0........7 1st digit
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* 80.......94 2nd "
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* 950......993 3rd "
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* 9940.....9989 4th "
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* 99900....99999 5th "
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*
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* Group Insert Hyphens
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* Identifier "0" After
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* -----------------------------------------
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* 00.......19 1st 3rd 9th digit
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* 200......699 " 4th "
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* 7000.....8499 " 5th "
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* 85000....89999 " 6th "
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* 900000...949999 " 7th "
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* 9500000..9999999 " 8th "
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*
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*
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* Group Insert Hyphens
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* Identifier "1" After
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* ----------------------------------------
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* 0........54999 illegal
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* 55000....86979 1st 6th 9th digit
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* 869800...998999 " 7th "
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* 9990000..9999999 " 8th "
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*
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*
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* Group Insert Hyphens
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* Identifier "2" After
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* -----------------------------------------
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* 00.......19 1st 3rd 9th digit
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* 200......349 " 4th "
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* 34000....39999 " 6th "
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* 400......699 " 4th "
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* 7000.....8399 " 5th "
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* 84000....89999 " 6th "
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* 900000...949999 " 7th "
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* 9500000..9999999 " 8th "
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*
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* The position of the hyphens are determined by the publisher
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* prefix range established by each national agency in accordance
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* with the industry needs. The knowledge of the prefix ranges for
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* each country or group of countries is necessary to develop the
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* hyphenation output program. For groups 3 through 99999, the hyphenation
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* rules are currently unknown. So just leave out the hyphen between
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* the publisher and title for now, but allow it if the user inserts it.
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* </pre>
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*
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* @param input The raw string, hyphens included
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*/
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virtual void fixup(TQString& input) const;
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static void staticFixup(TQString& input);
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static TQString isbn10(TQString isbn13);
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static TQString isbn13(TQString isbn10);
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static TQString cleanValue(TQString isbn);
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private:
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static struct isbn_band {
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unsigned long MaxValue;
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unsigned int First;
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unsigned int Mid;
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unsigned int Last;
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} bands[];
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TQValidator::State validate10(TQString& input, int& pos) const;
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TQValidator::State validate13(TQString& input, int& pos) const;
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static void fixup10(TQString& input);
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static void fixup13(TQString& input);
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/**
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* This function calculates and returns the ISBN checksum. The
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* algorithm is based on some code by Andrew Plotkin, available at
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* http://www.eblong.com/zarf/bookscan/
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*
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* @see http://www.eblong.com/zarf/bookscan/
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*
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* @param input The raw string, with no hyphens
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*/
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static TQChar checkSum10(const TQString& input);
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static TQChar checkSum13(const TQString& input);
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};
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} // end namespace
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#endif
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