ISO-14651-2007.pdf
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1、 Reference number ISO/IEC 14651:2007(E) ISO/IEC 2007 INTERNATIONAL STANDARD ISO/IEC 14651 Second edition 2007-12-01 Information technology International string ordering and comparison Method for comparing character strings and description of the common template tailorable ordering Technologies de li
2、nformation Classement international et comparaison de chanes de caractres Mthode de comparaison de chanes de caractres et description du modle commun et adaptable dordre de classement Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employe
3、es/1111111001, User=Japan, IHS Not for Resale, 12/17/2007 19:23:16 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 14651:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or view
4、ed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in
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6、or use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2007 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or uti
7、lized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax
8、 + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2007 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 12/17/2007 19:23:
9、16 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 14651:2007(E) ISO/IEC 2007 All rights reserved iii Contents Page Foreword iv Introduction.v 1 Scope1 2 Conformance .2 3 Normative references2 4 Terms and definitions.3 5 Symbols and abbreviations4 6 String compariso
10、n.4 6.1 Preparation of character strings prior to comparison.4 6.2 Key building and comparison5 6.2.1 Preliminary considerations 5 6.2.2 Reference ordering key formation.6 6.2.3 Reference comparison method for ordering character strings7 6.3 Common Template Table: formation and interpretation.8 6.3.
11、1 BNF syntax rules for the Common Template Table in Annex A.9 6.3.2 Well-formedness conditions 12 6.3.3 Interpretation of tailored tables .13 6.3.4 Evaluation of weight tables14 6.3.5 Conditions for considering specific table equivalences.14 6.3.6 Conditions for results to be considered equivalent14
12、 6.4 Declaration of a delta14 6.5 Name of the Common Template Table and name declaration16 Annex A (normative) Common Template Table.17 Annex B (informative) Example tailoring deltas 18 B.1 Example 1 Minimal tailoring 18 B.2 Example 2 Reversing the order of lowercase and uppercase letters18 B.3 Exam
13、ple 3 Canadian delta and benchmark18 B.4 Example 4 Danish delta and benchmark21 B.5 Example 5 A tailoring for Khmer.24 Annex C (informative) Preparation26 C.1 General considerations.26 C.2 Thai string ordering.26 C.3 Handling of numeral substrings in collation29 Annex D (informative) Tutorial on sol
14、utions brought by this International Standard to problems of lexical ordering39 D.1 Problems 39 D.2 Solution 40 D.3 Tailoring .41 Bibliography43 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for
15、Resale, 12/17/2007 19:23:16 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 14651:2007(E) iv ISO/IEC 2007 All rights reserved Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specializ
16、ed system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical commit
17、tees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International
18、 Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publ
19、ication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all su
20、ch patent rights. ISO/IEC 14651 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 2, Coded character sets. This second edition cancels and replaces the first edition (ISO/IEC 14651:2001), which has been technically revised. It also incorporates the Amen
21、dments ISO/IEC 14651:2001/Amd.1:2003, ISO/IEC 14651:2001/Amd.2:2005 and ISO/IEC 14651:2001/Amd.3:2006. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 12/17/2007 19:23:16 MSTNo reproduc
22、tion or networking permitted without license from IHS -,-,- ISO/IEC 14651:2007(E) ISO/IEC 2007 All rights reserved v Introduction This International Standard provides a method, applicable around the world, for ordering text data, and provides a Common Template Table which, when tailored, can meet a
23、given languages ordering requirements while retaining reasonable ordering for other scripts. The Common Template Table requires some tailoring in different local environments. Conformance to this International Standard requires that all deviations from the Template, called “deltas“, be declared to d
24、ocument resultant discrepancies. This International Standard describes a method to order text data independently of context. ISO/IEC TR 14652 has specifications for ordering that informatively complement the specifications in this International Standard, and indicates where additional information ca
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