It would fit better into Ant´s future if the existing <import> would support <resources> - e.g. <urlresource>s.
Jan >-----Ursprüngliche Nachricht----- >Von: Mike Rettig [mailto:[EMAIL PROTECTED] >Gesendet: Dienstag, 29. November 2005 02:55 >An: [email protected] >Betreff: Importing and caching build files from a URL > >All, > >I'd like to be able to import files from URL's. AFAIK, only >file imports are supported. This is limiting when trying to >share build files between multiple projects. I'd like to >package build files in jars or distribute them on a website. > >I've brought this discussion up once before for jar imports. > >http://marc.theaimsgroup.com/?l=ant-dev&m=111539890504619&w=2 > >Http Example: > ><project> > > <import file="ivy-dependencies.xml"/> > <urlimport url="http://www.antbuilds.com/1.1/war-build.xml"; >cache="true" >/> > ></project> > >This makes distributing and reusing builds quite easy. Apache >or whomever could host standard build files that could be >downloaded and imported directly into ant scripts. The files >could be cached in a simple repository in the user's home >directory (~/.antcache). > >I've written some basic code that extends the ImportTask, but >probably some refactoring needs to be done on the ImportTask >to make it a bit cleaner. > >Thoughts? > >package org.apache.tools.ant.taskdefs; > >import java.io.BufferedInputStream; >import java.io.BufferedOutputStream; >import java.io.File; >import java.io.FileOutputStream; >import java.io.IOException; >import java.io.InputStream; >import java.io.OutputStream; >import java.net.URL; > >import org.apache.tools.ant.BuildException; > >/** > * @ant.task category="control" > */ >public class UrlImportTask extends ImportTask { > > private String url = null; > > private boolean cache = true; > > public void setUrl(String url) { > this.url = url; > } > > public void setCache(boolean shouldCache) { > this.cache = shouldCache; > } > > private File getOutputDir() { > String tempDir = System.getProperty("user.home"); > File f = new File(tempDir, ".antimport"); > if (!f.exists()) { > f.mkdirs(); > } > return f; > } > > public void execute() { > if (url == null) { > throw new BuildException("import requires url attribute"); > } > > File output = new File(getOutputDir(), url); > boolean fileExists = output.exists(); > if (!fileExists) { > copyFileToCacheDir(output); > } > setFile(output.getAbsolutePath()); > try { > super.execute(); > } finally { > if (!fileExists && !cache) { > output.delete(); > } > } > } > > private void copyFileToCacheDir(File output) { > InputStream input = openInputStream(); > > OutputStream outputStream = null; > try { > outputStream = new BufferedOutputStream( > new FileOutputStream(output)); > for (int i = input.read(); i >= 0; i = input.read()) { > outputStream.write(i); > } > outputStream.flush(); > } catch (Exception failed) { > throw new BuildException("Import Failed:" + >failed.getMessage(), > failed); > } finally { > try { > input.close(); > } catch (IOException e) { > log(e.getMessage()); > } > try { > if (outputStream != null) { > outputStream.close(); > } > } catch (IOException e) { > log(e.getMessage()); > } > } > } > > private InputStream openInputStream() { > try { > URL location = new URL(url); > InputStream input = new >BufferedInputStream(location.openStream >()); > return input; > } catch (Exception failed) { > throw new BuildException("Import Failed: " + >failed.getMessage (), > failed); > } > } >} > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
