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Diffstat (limited to 'libjava/java/net/URLConnection.java')
| -rw-r--r-- | libjava/java/net/URLConnection.java | 454 |
1 files changed, 0 insertions, 454 deletions
diff --git a/libjava/java/net/URLConnection.java b/libjava/java/net/URLConnection.java deleted file mode 100644 index 4ddc10c53d3..00000000000 --- a/libjava/java/net/URLConnection.java +++ /dev/null @@ -1,454 +0,0 @@ -// URLConnection.java - Superclass of all communications links between -// an application and a URL. - -/* Copyright (C) 1999, 2000 Free Software Foundation - - This file is part of libgcj. - -This software is copyrighted work licensed under the terms of the -Libgcj License. Please consult the file "LIBGCJ_LICENSE" for -details. */ - -package java.net; - -import java.io.*; -import java.text.ParsePosition; -import java.text.SimpleDateFormat; -import java.util.Date; -import java.util.Locale; -import java.util.Hashtable; -import java.util.StringTokenizer; -import gnu.gcj.io.MimeTypes; - -/** - * @author Warren Levy <warrenl@cygnus.com> - * @date March 5, 1999. - */ - -/** - * Written using on-line Java Platform 1.2 API Specification, as well - * as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998). - * Status: One guessContentTypeFrom... methods not implemented. - * getContent method assumes content type from response; see comment there. - */ - -public abstract class URLConnection -{ - protected URL url; - protected boolean doInput = true; - protected boolean doOutput = false; - protected boolean allowUserInteraction; - protected boolean useCaches; - protected long ifModifiedSince = 0L; - protected boolean connected = false; - private static boolean defaultAllowUserInteraction = false; - private static boolean defaultUseCaches = true; - private static FileNameMap fileNameMap; // Set by the URLConnection subclass. - private static ContentHandlerFactory factory; - private static ContentHandler contentHandler; - private static Hashtable handlers = new Hashtable(); - private static Locale locale; - private static SimpleDateFormat dateFormat1, dateFormat2, dateFormat3; - private static boolean dateformats_initialized = false; - - protected URLConnection(URL url) - { - this.url = url; - allowUserInteraction = defaultAllowUserInteraction; - useCaches = defaultUseCaches; - } - - public abstract void connect() throws IOException; - - public URL getURL() - { - return url; - } - - public int getContentLength() - { - return getHeaderFieldInt("content-length", -1); - } - - public String getContentType() - { - return getHeaderField("content-type"); - } - - public String getContentEncoding() - { - return getHeaderField("content-encoding"); - } - - public long getExpiration() - { - return getHeaderFieldDate("expiration", 0L); - } - - public long getDate() - { - return getHeaderFieldDate("date", 0L); - } - - public long getLastModified() - { - return getHeaderFieldDate("last-modified", 0L); - } - - public String getHeaderField(int n) - { - // Subclasses for specific protocols override this. - return null; - } - - public String getHeaderField(String name) - { - // Subclasses for specific protocols override this. - return null; - } - - public int getHeaderFieldInt(String name, int val) - { - String str = getHeaderField(name); - try - { - if (str != null) - val = Integer.parseInt(str); - } - catch (NumberFormatException e) - { - ; // Do nothing; val is the default. - } - return val; - } - - public long getHeaderFieldDate(String name, long val) - { - if (! dateformats_initialized) - initializeDateFormats(); - String str = getHeaderField(name); - if (str != null) - { - Date date; - if ((date = dateFormat1.parse(str, new ParsePosition(0))) != null) - val = date.getTime(); - else if ((date = dateFormat2.parse(str, new ParsePosition(0))) != null) - val = date.getTime(); - else if ((date = dateFormat3.parse(str, new ParsePosition(0))) != null) - val = date.getTime(); - } - return val; - } - - public String getHeaderFieldKey(int n) - { - // Subclasses for specific protocols override this. - return null; - } - - public Object getContent() throws IOException - { - // FIXME: Doc indicates that other criteria should be applied as - // heuristics to determine the true content type, e.g. see - // guessContentTypeFromName() and guessContentTypeFromStream methods - // as well as FileNameMap class & fileNameMap field & get/set methods. - String cType = getContentType(); - contentHandler = setContentHandler(cType); - if (contentHandler == null) - return getInputStream(); - - return contentHandler.getContent(this); - } - -// TODO12: public Permission getPermission() throws IOException -// { -// // Subclasses may override this. -// return java.security.AllPermission; -// } - - public InputStream getInputStream() throws IOException - { - // Subclasses for specific protocols override this. - throw new UnknownServiceException("Protocol " + url.getProtocol() + - " does not support input."); - } - - public OutputStream getOutputStream() throws IOException - { - // Subclasses for specific protocols override this. - throw new UnknownServiceException("Protocol " + url.getProtocol() + - " does not support output."); - } - - public String toString() - { - return this.getClass().getName() + ":" + url.toString(); - } - - public void setDoInput(boolean doinput) - { - if (connected) - throw new IllegalAccessError("Already connected"); - - doInput = doinput; - } - - public boolean getDoInput() - { - return doInput; - } - - public void setDoOutput(boolean dooutput) - { - if (connected) - throw new IllegalAccessError("Already connected"); - - doOutput = dooutput; - if (doOutput) - doInput = false; - } - - public boolean getDoOutput() - { - return doOutput; - } - - public void setAllowUserInteraction(boolean allowuserinteraction) - { - if (connected) - throw new IllegalAccessError("Already connected"); - - allowUserInteraction = allowuserinteraction; - } - - public boolean getAllowUserInteraction() - { - return allowUserInteraction; - } - - public static void - setDefaultAllowUserInteraction(boolean defaultallowuserinteraction) - { - defaultAllowUserInteraction = defaultallowuserinteraction; - } - - public static boolean getDefaultAllowUserInteraction() - { - return defaultAllowUserInteraction; - } - - public void setUseCaches(boolean usecaches) - { - if (connected) - throw new IllegalAccessError("Already connected"); - - useCaches = usecaches; - } - - public boolean getUseCaches() - { - return useCaches; - } - - public void setIfModifiedSince(long ifmodifiedsince) - { - if (connected) - throw new IllegalAccessError("Already connected"); - - ifModifiedSince = ifmodifiedsince; - } - - public long getIfModifiedSince() - { - return ifModifiedSince; - } - - public boolean getDefaultUseCaches() - { - return defaultUseCaches; - } - - public void setDefaultUseCaches(boolean defaultusecaches) - { - defaultUseCaches = defaultusecaches; - } - - public void setRequestProperty(String key, String value) - { - // Do nothing unless overridden by subclasses that support setting - // header fields in the request. - } - - public String getRequestProperty(String key) - { - // Overridden by subclasses that support reading header fields from the - // request. - return null; - } - - public static void setDefaultRequestProperty(String key, String value) - { - // Do nothing unless overridden by subclasses that support setting - // default request properties. - } - - public static String getDefaultRequestProperty(String key) - { - // Overridden by subclasses that support default request properties. - return null; - } - - public static void setContentHandlerFactory(ContentHandlerFactory fac) - { - if (factory != null) - throw new Error("ContentHandlerFactory already set"); - - // Throw an exception if an extant security mgr precludes - // setting the factory. - SecurityManager s = System.getSecurityManager(); - if (s != null) - s.checkSetFactory(); - factory = fac; - } - - protected static String guessContentTypeFromName(String fname) - { - int dot = fname.lastIndexOf ("."); - - if (dot != -1) - { - if (dot == fname.length()) - return ("application/octet-stream"); - else - fname = fname.substring (dot + 1); - } - - String type = MimeTypes.getMimeTypeFromExtension (fname); - - if (type == null) - return("application/octet-stream"); - - return(type); - } - -// TODO: public static String guessContentTypeFromStream(InputStream is) -// throws IOException -// { -// } - -// TODO12: protected void parseURL(URL u, String spec, int start, int limit) - - // JDK1.2 - public static FileNameMap getFileNameMap() - { - return fileNameMap; - } - - // JDK1.2 - public static void setFileNameMap(FileNameMap map) - { - // Throw an exception if an extant security mgr precludes - // setting the factory. - SecurityManager s = System.getSecurityManager(); - if (s != null) - s.checkSetFactory(); - - fileNameMap = map; - } - - private ContentHandler setContentHandler(String contentType) - { - ContentHandler handler; - - // No content type so just handle it as the default. - if (contentType == null || contentType == "") - return null; - - // See if a handler has been cached for this content type. - // For efficiency, if a content type has been searched for but not - // found, it will be in the hash table but as the contentType String - // instead of a ContentHandler. - if ((handler = (ContentHandler) handlers.get(contentType)) != null) - if (handler instanceof ContentHandler) - return handler; - else - return null; - - // If a non-default factory has been set, use it to find the content type. - if (factory != null) - handler = factory.createContentHandler(contentType); - - // Non-default factory may have returned null or a factory wasn't set. - // Use the default search algorithm to find a handler for this content type. - if (handler == null) - { - // Get the list of packages to check and append our default handler - // to it, along with the JDK specified default as a last resort. - // Except in very unusual environments the JDK specified one shouldn't - // ever be needed (or available). - String propVal = System.getProperty("java.content.handler.pkgs"); - propVal = (propVal == null) ? "" : (propVal + "|"); - propVal = propVal + "gnu.gcj.content|sun.net.www.content"; - - // Replace the '/' character in the content type with '.' and - // all other non-alphabetic, non-numeric characters with '_'. - StringTokenizer pkgPrefix = new StringTokenizer(propVal, "|"); - char[] cArray = contentType.toCharArray(); - for (int i = 0; i < cArray.length; i++) - { - if (cArray[i] == '/') - cArray[i] = '.'; - else if (! ((cArray[i] >= 'A' && cArray[i] <= 'Z') || - (cArray[i] >= 'a' && cArray[i] <= 'z') || - (cArray[i] >= '0' && cArray[i] <= '9'))) - cArray[i] = '_'; - } - String contentClass = new String(cArray); - - // See if a class of this content type exists in any of the packages. - do - { - String facName = pkgPrefix.nextToken() + "." + contentClass; - try - { - handler = - (ContentHandler) Class.forName(facName).newInstance(); - } - catch (Exception e) - { - // Can't instantiate; handler still null, go on to next element. - } - } while ((handler == null || - ! (handler instanceof ContentHandler)) && - pkgPrefix.hasMoreTokens()); - } - - // Update the hashtable with the new content handler. - if (handler != null && handler instanceof ContentHandler) - { - handlers.put(contentType, handler); - return handler; - } - - // For efficiency on subsequent searches, put a dummy entry in the hash - // table for content types that don't have a non-default ContentHandler. - handlers.put(contentType, contentType); - return null; - } - - // We don't put these in a static initializer, because it creates problems - // with initializer co-dependency: SimpleDateFormat's constructors eventually - // depend on URLConnection (via the java.text.*Symbols classes). - private synchronized void initializeDateFormats() - { - if (dateformats_initialized) - return; - locale = new Locale("En", "Us", "Unix"); - dateFormat1 = new SimpleDateFormat("EEE, dd MMM yyyy hh:mm:ss 'GMT'", - locale); - dateFormat2 = new SimpleDateFormat("EEEE, dd-MMM-yy hh:mm:ss 'GMT'", - locale); - dateFormat3 = new SimpleDateFormat("EEE MMM d hh:mm:ss yyyy", locale); - dateformats_initialized = true; - } -} |