[jira] Created: (SANDBOX-330) CSVParser hangs (goes into infinite loop) on getLine() if it's a "comment" line that doesn't contain a delimiter

["Toli Kuznets (JIRA)" <ji...@apache.org>]

CSVParser hangs (goes into infinite loop) on getLine() if it's a "comment" line that doesn't contain a delimiter
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                 Key: SANDBOX-330
                 URL: https://issues.apache.org/jira/browse/SANDBOX-330
             Project: Commons Sandbox
          Issue Type: Bug
          Components: CSV
    Affects Versions: Nightly Builds
            Reporter: Toli Kuznets


if you call CSVParser.getLine() or nextToken() with a line that is a comment as defined by the CSVStrategy but it doesn't contain the delimiter character, the call hangs in an infinite loop

This code will hang:
{code}
        parser = new CSVParser(new StringReader("# abc\n"), new CSVStrategy('\t', '\'', '#'));
        tokens = parser.getLine();
{code}

However, if you insert a delimiter char into the incoming string, it'll come through and return an empty string as a result:
{code}
        CSVParser parser = new CSVParser(new StringReader("#\tabc"), new CSVStrategy('\t', '\'', '#'));
        String[] tokens = parser.getLine();
        System.out.println("result: "+Arrays.toString(tokens));
{code}

It gets stuck in an infinite loop in CSVParser.nextToken() in the loop around line 347

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[jira] [Resolved] (SANDBOX-330) CSVParser hangs (goes into infinite loop) on getLine() if it's a "comment" line that doesn't contain a delimiter

["Emmanuel Bourg (Resolved) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SANDBOX-330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Emmanuel Bourg resolved SANDBOX-330.
------------------------------------

       Resolution: Cannot Reproduce
    Fix Version/s: CSV 1.0

Thank you for the detailed report Toli. I ran your example against the current trunk and it worked fine. Could you give it another try and reopen this issue if it's not working for you?
                
> CSVParser hangs (goes into infinite loop) on getLine() if it's a "comment" line that doesn't contain a delimiter
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: SANDBOX-330
>                 URL: https://issues.apache.org/jira/browse/SANDBOX-330
>             Project: Commons Sandbox
>          Issue Type: Bug
>          Components: CSV
>    Affects Versions: Nightly Builds
>            Reporter: Toli Kuznets
>             Fix For: CSV 1.0
>
>
> if you call CSVParser.getLine() or nextToken() with a line that is a comment as defined by the CSVStrategy but it doesn't contain the delimiter character, the call hangs in an infinite loop
> This code will hang:
> {code}
>         parser = new CSVParser(new StringReader("# abc\n"), new CSVStrategy('\t', '\'', '#'));
>         tokens = parser.getLine();
> {code}
> However, if you insert a delimiter char into the incoming string, it'll come through and return an empty string as a result:
> {code}
>         CSVParser parser = new CSVParser(new StringReader("#\tabc"), new CSVStrategy('\t', '\'', '#'));
>         String[] tokens = parser.getLine();
>         System.out.println("result: "+Arrays.toString(tokens));
> {code}
> It gets stuck in an infinite loop in CSVParser.nextToken() in the loop around line 347

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