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From "Niall Pemberton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (IO-178) BOMInputStream - an InputStream for detected and optionally excludeing an initial Byte Order mark
Date Sun, 03 Oct 2010 23:56:33 GMT

    [ https://issues.apache.org/jira/browse/IO-178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12917434#action_12917434
] 

Niall Pemberton commented on IO-178:
------------------------------------

Also meant to say I've also renamed it from BOMExclusionInputStream to BOMInputStream and
added a ByteOrderMark implementation:

    http://svn.apache.org/viewvc?view=revision&revision=1004073

> BOMInputStream - an InputStream for detected and optionally excludeing an initial Byte
Order mark
> -------------------------------------------------------------------------------------------------
>
>                 Key: IO-178
>                 URL: https://issues.apache.org/jira/browse/IO-178
>             Project: Commons IO
>          Issue Type: New Feature
>          Components: Streams/Writers
>    Affects Versions: 1.4
>            Reporter: Keith D Gregory
>            Assignee: Niall Pemberton
>            Priority: Minor
>             Fix For: 2.0
>
>         Attachments: BOMExclusionInputStream.java, BOMExclusionInputStream.patch, TestBOMExclusionInputStream.java
>
>
> Microsoft tools have the unpleasant habit of writing a byte order mark (the three-byte
sequence 0xEF 0xBB 0xBF) at the start of a UTF-8 encoded file.
> The CharsetDecoder supplied with the JDK does not simply discard these bytes, but instead
returns the BOM character (0xFEFF); see http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6378911
for discussion on this.
> This makes life unpleasant for anyone who is processing text data, as the program must
look for this character and ignore it.
> The BOMExclusionInputStream class is a work-around: it recognizes the BOM at the start
of the stream, and skips over it.

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