Examples of org.codehaus.plexus.interpolation.RegexBasedInterpolator

Package org.codehaus.plexus.interpolation

Examples of org.codehaus.plexus.interpolation.RegexBasedInterpolator

org.codehaus.plexus.interpolation.RegexBasedInterpolator
Expansion of the original RegexBasedInterpolator, found in plexus-utils, this interpolator provides options for setting custom prefix/suffix regex parts, and includes a {@link RecursionInterceptor} parameter in its interpolate(..)call, to allow the detection of cyclical expression references. @version $Id$

                {
                    IOUtil.close( in );
                }
            }


            Interpolator interpolator = new RegexBasedInterpolator();
            interpolator.addValueSource( new MapBasedValueSource( getInterpolationValueSource() ) );
            for ( String key : (Set<String>) ( (Map) props ).keySet() )
            {
                String value = props.getProperty( key );
                try
                {
                    value = interpolator.interpolate( value, "" );
                }
                catch ( InterpolationException e )
                {
                    throw new MojoExecutionException( "Failed to interpolate invoker properties: " + propertiesFile, e );
                }

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        // Legacy for the old ${modules} syntax
        modulesProps.put( "modules", "<menu ref=\"modules\"/>" );


        String interpolatedSiteDescriptorContent = StringUtils.interpolate( siteDescriptorContent, modulesProps );


        RegexBasedInterpolator interpolator = new RegexBasedInterpolator();


        try
        {
            interpolator.addValueSource( new EnvarBasedValueSource() );
        }
        catch ( IOException e )
        {
            // Prefer logging?
            throw new SiteToolException( "IOException: cannot interpolate environment properties: " + e.getMessage(),
                                         e );
        }


        interpolator.addValueSource( new ObjectBasedValueSource( aProject ) );


        interpolator.addValueSource( new MapBasedValueSource( aProject.getProperties() ) );


        try
        {
            // FIXME: this does not escape xml entities, see MSITE-226, PLXCOMP-118
            interpolatedSiteDescriptorContent = interpolator.interpolate( interpolatedSiteDescriptorContent,
                                                                          "project" );
        }
        catch ( InterpolationException e )
        {
            throw new SiteToolException( "Cannot interpolate site descriptor: " + e.getMessage(), e );

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                {
                    IOUtil.close( in );
                }
            }


            Interpolator interpolator = new RegexBasedInterpolator();
            interpolator.addValueSource( new MapBasedValueSource( getInterpolationValueSource() ) );
            for ( String key : (Set<String>) ( (Map) props ).keySet() )
            {
                String value = props.getProperty( key );
                try
                {
                    value = interpolator.interpolate( value, "" );
                }
                catch ( InterpolationException e )
                {
                    throw new MojoExecutionException( "Failed to interpolate invoker properties: " + propertiesFile,
                                                      e );

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            if ( value.indexOf( "${" ) < 0 )
            {
                return value;
            }


            final RegexBasedInterpolator interpolator = new RegexBasedInterpolator();
            try
            {
                interpolator.addValueSource( new EnvarBasedValueSource() );
            }
            catch ( final IOException e )
            {
            }


            interpolator.addValueSource( new PropertiesBasedValueSource( System.getProperties() ) );
            interpolator.addValueSource( new PropertiesBasedValueSource( project.getProperties() ) );
            interpolator.addValueSource( new PrefixedObjectValueSource( "project", project ) );
            interpolator.addValueSource( new PrefixedObjectValueSource( "pom", project ) );
            interpolator.addValueSource( new PrefixedObjectValueSource( "settings", settings ) );


            try
            {
                value = interpolator.interpolate( value );
            }
            catch ( final InterpolationException e )
            {
            }

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    {
    }


    protected Interpolator createInterpolator()
    {
        return new RegexBasedInterpolator( true );
    }

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            throw new IllegalStateException( "Failed to serialize settings to memory", e );
        }


        String serializedSettings = writer.toString();


        RegexBasedInterpolator interpolator = new RegexBasedInterpolator();


        interpolator.addValueSource( new PropertiesBasedValueSource( request.getUserProperties() ) );


        interpolator.addValueSource( new PropertiesBasedValueSource( request.getSystemProperties() ) );


        try
        {
            interpolator.addValueSource( new EnvarBasedValueSource() );
        }
        catch ( IOException e )
        {
            problems.add( SettingsProblem.Severity.WARNING, "Failed to use environment variables for interpolation: "
                + e.getMessage(), -1, -1, e );
        }


        interpolator.addPostProcessor( new InterpolationPostProcessor()
        {
            public Object execute( String expression, Object value )
            {
                if ( value != null )
                {
                    // we're going to parse this back in as XML so we need to escape XML markup
                    value = value.toString().replace( "&", "&amp;" ).replace( "<", "&lt;" ).replace( ">", "&gt;" );
                    return value;
                }
                return null;
            }
        } );


        try
        {
            serializedSettings = interpolator.interpolate( serializedSettings, "settings" );
        }
        catch ( InterpolationException e )
        {
            problems.add( SettingsProblem.Severity.ERROR, "Failed to interpolate settings: " + e.getMessage(), -1, -1,
                          e );

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public class PlexusInterpolationTest {
  @Test
  public void testInterpolation_withoutSource() throws Exception {
    String s = "Hello ${name}";
    
    Interpolator i = new RegexBasedInterpolator();
    Assert.assertEquals("Hello ${name}", i.interpolate(s));
  }

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    Properties props = new Properties();
    props.put("name", "World");
    ValueSource vs = new PropertiesBasedValueSource(props);
    
    Interpolator i = new RegexBasedInterpolator();
    i.addValueSource(vs);
    Assert.assertEquals("Hello World", i.interpolate(s));
  }

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      public Object getValue(String expression) {
        return "World";
      }
    };
    
    Interpolator i = new RegexBasedInterpolator();
    i.addValueSource(vs);
    Assert.assertEquals("Hello World", i.interpolate(s));
  }

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    {
        addFilterWrapper( new FileUtils.FilterWrapper()
        {
            public Reader getReader( Reader reader )
            {
                Interpolator propertiesInterpolator = new RegexBasedInterpolator();
                propertiesInterpolator.addValueSource( valueSource );
                return new InterpolatorFilterReaderLineEnding( reader, propertiesInterpolator,
                                                               InterpolatorFilterReaderLineEnding.DEFAULT_BEGIN_TOKEN,
                                                               InterpolatorFilterReaderLineEnding.DEFAULT_END_TOKEN,
                                                               false );
            }

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