SVNKit getFileFromSVN
/* * ==================================================================== * Copyright (c) 2004-2011 TMate Software Ltd. All rights reserved. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at http://svnkit.com/license.html * If newer versions of this license are posted there, you may use a * newer version instead, at your option. * ==================================================================== */ package org.tmatesoft.svn.examples.repository; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.util.Iterator; import org.tmatesoft.svn.core.SVNException; import org.tmatesoft.svn.core.SVNNodeKind; import org.tmatesoft.svn.core.SVNProperties; import org.tmatesoft.svn.core.SVNProperty; import org.tmatesoft.svn.core.SVNURL; import org.tmatesoft.svn.core.auth.ISVNAuthenticationManager; import org.tmatesoft.svn.core.internal.io.dav.DAVRepositoryFactory; import org.tmatesoft.svn.core.internal.io.fs.FSRepositoryFactory; import org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryFactoryImpl; import org.tmatesoft.svn.core.io.SVNRepository; import org.tmatesoft.svn.core.io.SVNRepositoryFactory; import org.tmatesoft.svn.core.wc.SVNWCUtil; /* * This example shows how to fetch a file and its properties from the repository * at the latest (HEAD) revision . If the file is a text (either it has no * svn:mime-type property at all or if has and the property value is text/-like) * its contents as well as properties will be displayed in the console, * otherwise - only properties. * As an example here's a part of one of the * program layouts (for the default url and file path used in the program): * * File property: svn:entry:revision=2802 * File property: svn:entry:checksum=435f2f0d33d12907ddb6dfd611825ec9 * File property: svn:wc:ra_dav:version-url=/repos/svnkit/!svn/ver/2795/trunk/www/license.html * File property: svn:entry:last-author=alex * File property: svn:entry:committed-date=2006-11-13T21:34:27.908657Z * File property: svn:entry:committed-rev=2795 * File contents: * * <html> * <head> * <link rel="shortcut icon" href="img/favicon.ico"/> * <title>SVNKit :: License</title> * </head> * <body> * <h1>The TMate Open Source License.</h1> * <pre> * ...................................... * --------------------------------------------- * Repository latest revision: 2802 */ public class DisplayFile { /* * args parameter is used to obtain a repository location URL, user's * account name & password to authenticate him to the server, the file path * in the rpository (the file path should be relative to the the * path/to/repository part of the repository location URL). */ public static void main(String[] args) { /* * Default values: */ String url = "http://svn.svnkit.com/repos/svnkit/trunk"; String name = "anonymous"; String password = "anonymous"; String filePath = "www/license.html"; /* * Initializes the library (it must be done before ever using the * library itself) */ setupLibrary(); if (args != null) { /* * Obtains a repository location URL */ url = (args.length >= 1) ? args[0] : url; /* * Obtains a file path */ filePath = (args.length >= 2) ? args[1] : filePath; /* * Obtains an account name (will be used to authenticate the user to * the server) */ name = (args.length >= 3) ? args[2] : name; /* * Obtains a password */ password = (args.length >= 4) ? args[3] : password; } SVNRepository repository = null; try { /* * Creates an instance of SVNRepository to work with the repository. * All user's requests to the repository are relative to the * repository location used to create this SVNRepository. * SVNURL is a wrapper for URL strings that refer to repository locations. */ repository = SVNRepositoryFactory.create(SVNURL.parseURIEncoded(url)); } catch (SVNException svne) { /* * Perhaps a malformed URL is the cause of this exception */ System.err .println("error while creating an SVNRepository for the location '" + url + "': " + svne.getMessage()); System.exit(1); } /* * User's authentication information (name/password) is provided via an * ISVNAuthenticationManager instance. SVNWCUtil creates a default * authentication manager given user's name and password. * * Default authentication manager first attempts to use provided user name * and password and then falls back to the credentials stored in the * default Subversion credentials storage that is located in Subversion * configuration area. If you'd like to use provided user name and password * only you may use BasicAuthenticationManager class instead of default * authentication manager: * * authManager = new BasicAuthenticationsManager(userName, userPassword); * * You may also skip this point - anonymous access will be used. */ ISVNAuthenticationManager authManager = SVNWCUtil.createDefaultAuthenticationManager(name, password); repository.setAuthenticationManager(authManager); /* * This Map will be used to get the file properties. Each Map key is a * property name and the value associated with the key is the property * value. */ SVNProperties fileProperties = new SVNProperties(); ByteArrayOutputStream baos = new ByteArrayOutputStream(); try { /* * Checks up if the specified path really corresponds to a file. If * doesn't the program exits. SVNNodeKind is that one who says what is * located at a path in a revision. -1 means the latest revision. */ SVNNodeKind nodeKind = repository.checkPath(filePath, -1); if (nodeKind == SVNNodeKind.NONE) { System.err.println("There is no entry at '" + url + "'."); System.exit(1); } else if (nodeKind == SVNNodeKind.DIR) { System.err.println("The entry at '" + url + "' is a directory while a file was expected."); System.exit(1); } /* * Gets the contents and properties of the file located at filePath * in the repository at the latest revision (which is meant by a * negative revision number). */ repository.getFile(filePath, -1, fileProperties, baos); } catch (SVNException svne) { System.err.println("error while fetching the file contents and properties: " + svne.getMessage()); System.exit(1); } /* * Here the SVNProperty class is used to get the value of the * svn:mime-type property (if any). SVNProperty is used to facilitate * the work with versioned properties. */ String mimeType = fileProperties.getStringValue(SVNProperty.MIME_TYPE); /* * SVNProperty.isTextMimeType(..) method checks up the value of the mime-type * file property and says if the file is a text (true) or not (false). */ boolean isTextType = SVNProperty.isTextMimeType(mimeType); Iterator iterator = fileProperties.nameSet().iterator(); /* * Displays file properties. */ while (iterator.hasNext()) { String propertyName = (String) iterator.next(); String propertyValue = fileProperties.getStringValue(propertyName); System.out.println("File property: " + propertyName + "=" + propertyValue); } /* * Displays the file contents in the console if the file is a text. */ if (isTextType) { System.out.println("File contents:"); System.out.println(); try { baos.writeTo(System.out); } catch (IOException ioe) { ioe.printStackTrace(); } } else { System.out .println("File contents can not be displayed in the console since the mime-type property says that it's not a kind of a text file."); } /* * Gets the latest revision number of the repository */ long latestRevision = -1; try { latestRevision = repository.getLatestRevision(); } catch (SVNException svne) { System.err.println("error while fetching the latest repository revision: " + svne.getMessage()); System.exit(1); } System.out.println(""); System.out.println("---------------------------------------------"); System.out.println("Repository latest revision: " + latestRevision); System.exit(0); } /* * Initializes the library to work with a repository via * different protocols. */ private static void setupLibrary() { /* * For using over http:// and https:// */ DAVRepositoryFactory.setup(); /* * For using over svn:// and svn+xxx:// */ SVNRepositoryFactoryImpl.setup(); /* * For using over file:/// */ FSRepositoryFactory.setup(); } }
http://wiki.svnkit.com/Printing_Out_File_Contents
http://svn.svnkit.com/repos/svnkit/tags/1.3.5/doc/examples/src/org/tmatesoft/svn/examples/repository/DisplayFile.java
