[SCM-603] Blame command for Mercurial (HG) is partial

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3, 1.4
• Fix Version/s: 1.5
• Component/s: maven-scm-provider-mercurial (hg)
• Flags: Patch
• Assignee: Olivier Lamy
• Reporter: Fabien Bousquet
• Created: 02/Feb/11 06:57
• Updated: 05/Apr/15 14:54
• Resolved: 05/Feb/11 16:09

Description

I use blame command for Mercurial provider (HG) and there is this exception :

Caused by: org.codehaus.plexus.util.cli.CommandLineException: Error inside systemOut parser
	at org.codehaus.plexus.util.cli.CommandLineUtils.executeCommandLine(CommandLineUtils.java:222)
	at org.codehaus.plexus.util.cli.CommandLineUtils.executeCommandLine(CommandLineUtils.java:107)
	at org.apache.maven.scm.provider.hg.HgUtils.executeCmd(HgUtils.java:159)
	... 13 more
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: -1
	at java.lang.String.substring(String.java:1768)
	at org.apache.maven.scm.provider.hg.command.blame.HgBlameConsumer.doConsume(HgBlameConsumer.java:49)
	at org.apache.maven.scm.provider.hg.command.HgConsumer.consumeLine(HgConsumer.java:131)
	at org.codehaus.plexus.util.cli.StreamPumper.consumeLine(StreamPumper.java:197)
	at org.codehaus.plexus.util.cli.StreamPumper.run(StreamPumper.java:137)

This exception seems to launch when a line is empty in source file.

On version 1.3, blame is partial and no exception is launched.

I propose a patch to fix this problem.