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Posted to issues@commons.apache.org by "Peter Wall (JIRA)" <ji...@apache.org> on 2013/12/12 05:22:06 UTC

[jira] [Created] (LANG-935) Possible performance improvement on string escape functions

Peter Wall created LANG-935:
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             Summary: Possible performance improvement on string escape functions
                 Key: LANG-935
                 URL: https://issues.apache.org/jira/browse/LANG-935
             Project: Commons Lang
          Issue Type: Improvement
          Components: lang.text.translate.*
    Affects Versions: 3.1
            Reporter: Peter Wall
            Priority: Minor


The escape functions for HTML etc. use the same code and the same initialisation tables for the escape and unescape functions, and while this is an elegant approach it leads to a number of deficiencies:
1. The code is very much less efficient than it could be
2. A new output string is created even when no conversion is required
3. No mapping is provided for characters that do not have a specific representation (for example HTML 0x101 should become &#257;)
The proposal is to use a new mapping technique to address these issues



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