Malformed project.xml caueses unexpected error
----------------------------------------------

         Key: MAVEN-1707
         URL: http://jira.codehaus.org/browse/MAVEN-1707
     Project: Maven
        Type: Bug
    Versions: 1.0.2    
 Environment: Mac oS X 1.0.2, Java 1.4.2
 Reporter: Elliotte Rusty Harold


My project.xml is malformed. There is a ' character before the XMl declaration 
that shouldn't be there. that is, it begins 

`<?xml version="1.0" encoding="UTF-8"?>

and it should begin

<?xml version="1.0" encoding="UTF-8"?>

Easy enough to fix (and for me to diagnose) but Maven gets really way more 
confused by this than it should. 
Even maven --info fails here. Maven should recognize this error for what it is 
(malformed project.xml) and provide an appropriate error message to the end 
user. Stack trace:

~/projects/jaxen$ maven cobertura
 __  __
|  \/  |__ _Apache__ ___
| |\/| / _` \ V / -_) ' \  ~ intelligent projects ~
|_|  |_\__,_|\_/\___|_||_|  v. 1.0.2

Parse Fatal Error at line 1 column 1: Content is not allowed in prolog.
org.xml.sax.SAXParseException: Content is not allowed in prolog.
        at 
org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown 
Source)
        at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source)
        at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
        at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
        at org.apache.xerces.impl.XMLScanner.reportFatalError(Unknown Source)
        at 
org.apache.xerces.impl.XMLDocumentScannerImpl$PrologDispatcher.dispatch(Unknown 
Source)
        at 
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown 
Source)
        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
        at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
        at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
        at org.apache.commons.digester.Digester.parse(Digester.java:1527)
        at org.apache.maven.MavenUtils.getNonJellyProject(MavenUtils.java:203)
        at org.apache.maven.MavenUtils.getProject(MavenUtils.java:143)
        at org.apache.maven.MavenUtils.getProject(MavenUtils.java:122)
        at 
org.apache.maven.MavenSession.initializeRootProject(MavenSession.java:232)
        at org.apache.maven.MavenSession.initialize(MavenSession.java:172)
        at org.apache.maven.cli.App.doMain(App.java:475)
        at org.apache.maven.cli.App.main(App.java:1239)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at com.werken.forehead.Forehead.run(Forehead.java:551)
        at com.werken.forehead.Forehead.main(Forehead.java:581)
org.apache.maven.MavenException: Error parsing project.xml 
'/Users/elharo/Projects/Jaxen/project.xml'
        at org.apache.maven.MavenUtils.getNonJellyProject(MavenUtils.java:207)
        at org.apache.maven.MavenUtils.getProject(MavenUtils.java:143)
        at org.apache.maven.MavenUtils.getProject(MavenUtils.java:122)
        at 
org.apache.maven.MavenSession.initializeRootProject(MavenSession.java:232)
        at org.apache.maven.MavenSession.initialize(MavenSession.java:172)
        at org.apache.maven.cli.App.doMain(App.java:475)
        at org.apache.maven.cli.App.main(App.java:1239)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at com.werken.forehead.Forehead.run(Forehead.java:551)
        at com.werken.forehead.Forehead.main(Forehead.java:581)
--- Nested Exception ---
org.xml.sax.SAXParseException: Content is not allowed in prolog.
        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
        at org.apache.commons.digester.Digester.parse(Digester.java:1527)
        at org.apache.maven.MavenUtils.getNonJellyProject(MavenUtils.java:203)
        at org.apache.maven.MavenUtils.getProject(MavenUtils.java:143)
        at org.apache.maven.MavenUtils.getProject(MavenUtils.java:122)
        at 
org.apache.maven.MavenSession.initializeRootProject(MavenSession.java:232)
        at org.apache.maven.MavenSession.initialize(MavenSession.java:172)
        at org.apache.maven.cli.App.doMain(App.java:475)
        at org.apache.maven.cli.App.main(App.java:1239)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at com.werken.forehead.Forehead.run(Forehead.java:551)
        at com.werken.forehead.Forehead.main(Forehead.java:581)

You have encountered an unknown error running Maven. Please help us to correct 
this problem by following these simple steps:
- read the Maven FAQ at http://maven.apache.org/faq.html
- run the same command again with the '-e' parameter, eg maven -e jar
- search the maven-user archives for the error at
http://nagoya.apache.org/eyebrowse/[EMAIL PROTECTED]
- post the output of maven -e to JIRA at
http://jira.codehaus.org/BrowseProject.jspa?id=10030 (you must sign up first)
- run 'maven --info' and post the output as the environment to the bug above


Total time: 1 seconds
Finished at: Thu Oct 06 06:41:25 EDT 2005

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