Attachment 1964 Details for Bug 8972 – An ancient hack I've used to work around this limitation.

An ancient hack I've used to work around this limitation.

Filter.java (text/plain), 5.83 KB, created by Jani Kaarela on 2002-05-29 08:07:41 UTC

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Creator: Jani Kaarela

Created: 2002-05-29 08:07:41 UTC

Size: 5.83 KB

patch

obsolete

>/*
> * The Apache Software License, Version 1.1
> *
> * Copyright (c) 1999 The Apache Software Foundation.  All rights
> * reserved.
> *
> * Redistribution and use in source and binary forms, with or without
> * modification, are permitted provided that the following conditions
> * are met:
> *
> * 1. Redistributions of source code must retain the above copyright
> *    notice, this list of conditions and the following disclaimer.
> *
> * 2. Redistributions in binary form must reproduce the above copyright
> *    notice, this list of conditions and the following disclaimer in
> *    the documentation and/or other materials provided with the
> *    distribution.
> *
> * 3. The end-user documentation included with the redistribution, if
> *    any, must include the following acknowlegement:
> *       "This product includes software developed by the
> *        Apache Software Foundation (http://www.apache.org/)."
> *    Alternately, this acknowlegement may appear in the software itself,
> *    if and wherever such third-party acknowlegements normally appear.
> *
> * 4. The names "The Jakarta Project", "Ant", and "Apache Software
> *    Foundation" must not be used to endorse or promote products derived
> *    from this software without prior written permission. For written
> *    permission, please contact apache@apache.org.
> *
> * 5. Products derived from this software may not be called "Apache"
> *    nor may "Apache" appear in their names without prior written
> *    permission of the Apache Group.
> *
> * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
> * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
> * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
> * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
> * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
> * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
> * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
> * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
> * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
> * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
> * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> * SUCH DAMAGE.
> * ====================================================================
> *
> * This software consists of voluntary contributions made by many
> * individuals on behalf of the Apache Software Foundation.  For more
> * information on the Apache Software Foundation, please see
> * <http://www.apache.org/>.
> */
>package org.apache.tools.ant.taskdefs;
>
>import java.util.Enumeration;
>import java.util.Properties;
>import java.io.File;
>import java.io.FileInputStream;
>
>import org.apache.tools.ant.*;
>
>/**
> * This task sets a token filter that is used by the file copy methods
> * of the project to do token substitution, or sets mutiple tokens by
> * reading these from a file.
> *
> * * * Modified 10th July 2001 by Jani Kaarela:
> * If evalValues is set to true, properties/variables in value(s) are evaluated before
> * filtering begins.
> * Changes to the code:
> * - added evalValue variable & setter
> * - added an if-ed block which calls ProjectHelper.replaceProperties() to evaluate
> *   the value before adding the filter if evalValue is true (appears in both single
> *   token/value and filtersfromfile sections)
> * * *
> *
> * @author Stefano Mazzocchi <a href="mailto:stefano@apache.org">stefano@apache.org</a>
> * @author Gero Vermaas <a href="mailto:gero@xs4all.nl">gero@xs4all.nl</a>
> * @author Jani Kaarela <a href="mailto:jani.kaarela@accenture.com">jani.kaarela@accenture.com</a>
> */
>public class Filter extends Task {
>
>    private String token;
>    private String value;
>    private File filtersFile;
>    private boolean evalValues;
>    
>    public void setToken(String token) {
>        this.token = token;
>    }
>
>    public void setValue(String value) {
>        this.value = value;
>    }
>
>    public void setFiltersfile(File filtersFile) {
>        this.filtersFile = filtersFile;
>    }
>
>    public void setEvalvalues(boolean evalValues) {
>	  this.evalValues = evalValues;
>    }
>
>    public void execute() throws BuildException {
>        boolean isFiltersFromFile = filtersFile != null && token == null && value == null;
>        boolean isSingleFilter = filtersFile == null && token != null && value != null;
>        
>        if (!isFiltersFromFile && !isSingleFilter) {
>            throw new BuildException("both token and value parameters, or only a filtersFile parameter is required", location);
>        }
>        
>        if (isSingleFilter) {
>		if (evalValues) {
>			value = ProjectHelper.replaceProperties(project, value, project.getProperties());
>		}
>            project.addFilter(token, value);
>        }
>        
>        if (isFiltersFromFile) {
>            readFilters();
>        }
>    }
>    
>    protected void readFilters() throws BuildException {
>        log("Reading filters from " + filtersFile, Project.MSG_VERBOSE);
>        FileInputStream in = null;
>        try {
>            Properties props = new Properties();
>            in = new FileInputStream(filtersFile);
>            props.load(in);
>
>            Project proj = getProject();
>
>            Enumeration enum = props.propertyNames();
>            while (enum.hasMoreElements()) {
>                String strPropName = (String)enum.nextElement();
>                String strValue = props.getProperty(strPropName);
>		    if (evalValues) {
>				strValue = ProjectHelper.replaceProperties(project, strValue, proj.getProperties());
>		    }
>                proj.addFilter(strPropName, strValue);
>            }
>        } catch (Exception e) {
>            throw new BuildException("Could not read filters from file: " + filtersFile);
>        } finally {
>            if (in != null) {
>                try {
>                    in.close();
>                } catch (java.io.IOException ioex) {}
>            }
>        }
>    }
>}

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