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From "Kazuki Hamasaki (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LANG-857) Bad surrogate pair handling in the CharSequenceTranslator
Date Tue, 20 Nov 2012 12:36:58 GMT

     [ https://issues.apache.org/jira/browse/LANG-857?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kazuki Hamasaki updated LANG-857:
---------------------------------

    Attachment: CharSequenceTranslator_translate.patch
    
> Bad surrogate pair handling in the CharSequenceTranslator
> ---------------------------------------------------------
>
>                 Key: LANG-857
>                 URL: https://issues.apache.org/jira/browse/LANG-857
>             Project: Commons Lang
>          Issue Type: Bug
>          Components: lang.text.translate.*
>    Affects Versions: 3.x
>            Reporter: Kazuki Hamasaki
>            Priority: Minor
>              Labels: patch
>         Attachments: CharSequenceTranslator_translate.patch
>
>
> I found that there is bad surrogate pair handling in the CharSequenceTranslator
> This is a simple test case for this problem.
> \uD83D\uDE30 is a surrogate pair.
> {code:java}
> @Test
> public void testEscapeSurrogatePairs() throws Exception {
>     assertEquals("\uD83D\uDE30", StringEscapeUtils.escapeCsv("\uD83D\uDE30"));
> }
> {code}
> You'll get the exception as shown below.
> {code}
> java.lang.StringIndexOutOfBoundsException: String index out of range: 2
> 	at java.lang.String.charAt(String.java:658)
> 	at java.lang.Character.codePointAt(Character.java:4668)
> 	at org.apache.commons.lang3.text.translate.CharSequenceTranslator.translate(CharSequenceTranslator.java:95)
> 	at org.apache.commons.lang3.text.translate.CharSequenceTranslator.translate(CharSequenceTranslator.java:59)
> 	at org.apache.commons.lang3.StringEscapeUtils.escapeCsv(StringEscapeUtils.java:556)
> {code}
> Patch attached, the method affected:
> # public final void translate(CharSequence input, Writer out) throws IOException

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