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ABSTRACT

Web standards such as XHTML and CSS are rapidly coming into practice and have many advantages, including compatibility, consistency across browsers, and increased ease of maintenance. Unfortunately large numbers of existing websites still use the deprecated table-based layout style in which page style is unique to each page. Existing tools for automating the transition to stylesheets provide little help, converting page-by-page using a flattened structure and local inline styles rather than a common CSS stylesheet. This approach ignores hierarchical structure and defeats the main purpose of moving to the new standard, losing all of the advantages.

In this work we present an automated method for converting table-based layout websites to standards-compliant modern CSS stylesheet-based websites using a two-step process. Pages of the site are first converted page-by-page using table recognition technology to preserve hierarchical structure and layout semantics in local styles. Software clone detection technology is then utilized to recognize common layout styles in the pages and extract and minimize them to a common CSS stylesheet for the site. The result is a maintainable, efficient modern standards-compliant website with the same look and feel as the original but with all the maintenance advantages of a custom programmed new site.

REFERENCES

• 1: Adobe. Dreamweaver CS3. http://www.adobe.com/products/dreamweayer/.
• 2: D. T. Barnard and R. C. Holt. Hierarchic Syntax Error Repair for LR Grammars. Int. J. Computing and Information Sciences, 11(4):231--258, 1982.
• 3: Ira D. Baxter , Andrew Yahin , Leonardo Moura , Marcelo Sant'Anna , Lorraine Bier, Clone Detection Using Abstract Syntax Trees, Proceedings of the International Conference on Software Maintenance, p.368, March 16-19, 1998
• 4: Hsin-Hsi Chen , Shih-Chung Tsai , Jin-He Tsai, Mining tables from large scale HTML texts, Proceedings of the 18th conference on Computational linguistics, p.166-172, July 31-August 04, 2000, Saarbrücken, Germany [doi>10.3115/990820.990845]
• 5: J. Clark. XSL Transformations (XSLT) v1.0. http://www.w3.org/TR/xslt, 1999.
• 6: James R. Cordy, The TXL source transformation language, Science of Computer Programming, v.61 n.3, p.190-210, August 2006 [doi>10.1016/j.scico.2006.04.002]
• 7: James R. Cordy , Thomas R. Dean , Nikita Synytskyy, Practical language-independent detection of near-miss clones, Proceedings of the 2004 conference of the Centre for Advanced Studies on Collaborative research, p.1-12, October 04-07, 2004, Markham, Ontario, Canada
• 8: Thomas R. Dean , James R. Cordy , Andrew J. Malton , Kevin A. Schneider, Agile Parsing in TXL, Automated Software Engineering, v.10 n.4, p.311-336, October 2003 [doi>10.1023/A:1025801405075]
• 9: J. Handley. Table Analysis for Multi-line Cell Identification. In Document Recognition and Retrieval VIII, volume 4307, pages 34--43, 2001.
• 10: Ahmed E. Hassan , Richard C. Holt, Migrating Web Frameworks Using Water Transformations, Proceedings of the 27th Annual International Conference on Computer Software and Applications, p.296, November 03-06, 2003
• 11: J. Hu, R. Kashi, D. Lopresti, and G. Wil-fong. Table Structure Recognition and its Evaluation. In Doc. Recog. and Retrieval VIII, volume 4307, pages 44--55, 2001.
• 12: M. Hurst. Layout and Language: Challenges for Table Understanding on the Web. In 1st Int. Workshop on Web Document Analysis, pages 27--30, 2001.
• 13: Yingtao Jiang , Eleni Stroulia, Towards Reengineering Web Sites to Web-services Providers, Proceedings of the Eighth Euromicro Working Conference on Software Maintenance and Reengineering (CSMR'04), p.296, March 24-26, 2004
• 14: R. Koschke. A Survey of Research on Software Clones. In Duplication, Redundancy, and Similarity in Software, number 06301 in Dagstuhl Seminar Proceedings, 2007.
• 15: Yu Ping , Jianguo Lu , Terence C. Lau , Kostas Kontogiannis , Tack Tong , Bo Yi, Migration of legacy web applications to enterprise Java^TM environments net.data® to JSP^TM transformation, Proceedings of the 2003 conference of the Centre for Advanced Studies on Collaborative research, p.223-237, October 06-09, 2003, Toronto, Ontario, Canada
• 16: Filippo Ricca , Paolo Tonella, Using Clustering to Support the Migration from Static to Dynamic Web Pages, Proceedings of the 11th IEEE International Workshop on Program Comprehension, p.207, May 10-11, 2003
• 17: Nikita Synytskyy , James R. Cordy , Thomas R. Dean, Robust multilingual parsing using island grammars, Proceedings of the 2003 conference of the Centre for Advanced Studies on Collaborative research, p.266-278, October 06-09, 2003, Toronto, Ontario, Canada
• 18: Mark G. J. van den Brand , J. Heering , P. Klint , P. A. Olivier, Compiling language definitions: the ASF+SDF compiler, ACM Transactions on Programming Languages and Systems (TOPLAS), v.24 n.4, p.334-368, July 2002 [doi>10.1145/567097.567099]
• 19: E. Visser. Program Transformation with Stratego/XT: Rules, Strategies, Tools, and Systems in Stratego/XT 0.9. In Domain-Specific Program Generation, volume 3016 of LNCS, pages 216--238, 2004.
• 20: Shannon Xu , Thomas Dean, Transforming Embedded Java Code into Custom Tags, Proceedings of the Fifth IEEE International Workshop on Source Code Analysis and Manipulation, p.173-182, September 30-October 01, 2005 [doi>10.1109/SCAM.2005.27]
• 21: M. Yoshida, K. Torisawa, and J. Tsujii. A method to integrate tables of the world wide web. In 1st int. Workshop on Web Document Analysis, pages 31--34, 2001.
• 22: Richard Zanibbi , Dorothea Blostein , R. Cordy, A survey of table recognition: Models, observations, transformations, and inferences, International Journal on Document Analysis and Recognition, v.7 n.1, p.1-16, March 2004 [doi>10.1007/s10032-004-0120-9]
• 23: Richard Zanibbi , Dorothea Blostein , James R. Cordy, The Recognition Strategy Language, Proceedings of the Eighth International Conference on Document Analysis and Recognition, p.565-569, August 31-September 01, 2005 [doi>10.1109/ICDAR.2005.239]