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Diffstat (limited to 'bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/contenttype/AbstractResourceEncodingDetector.java')
-rw-r--r--bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/contenttype/AbstractResourceEncodingDetector.java261
1 files changed, 0 insertions, 261 deletions
diff --git a/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/contenttype/AbstractResourceEncodingDetector.java b/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/contenttype/AbstractResourceEncodingDetector.java
deleted file mode 100644
index 66b6bc2b66..0000000000
--- a/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/contenttype/AbstractResourceEncodingDetector.java
+++ /dev/null
@@ -1,261 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2001, 2004 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- * Jens Lukowski/Innoopract - initial renaming/restructuring
- *
- *******************************************************************************/
-package org.eclipse.wst.html.core.internal.contenttype;
-
-import java.io.BufferedInputStream;
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.Reader;
-import java.nio.charset.Charset;
-import java.nio.charset.IllegalCharsetNameException;
-import java.nio.charset.UnsupportedCharsetException;
-
-import org.eclipse.core.resources.IStorage;
-import org.eclipse.core.runtime.CoreException;
-import org.eclipse.wst.sse.core.internal.encoding.CodedIO;
-import org.eclipse.wst.sse.core.internal.encoding.EncodingMemento;
-import org.eclipse.wst.sse.core.internal.encoding.IResourceCharsetDetector;
-
-
-public abstract class AbstractResourceEncodingDetector implements IResourceCharsetDetector {
-
- protected EncodingMemento fEncodingMemento;
-
- protected boolean fHeaderParsed;
-
- protected Reader fReader;
-
- /**
- *
- */
- public AbstractResourceEncodingDetector() {
- super();
- }
-
- /**
- * Note: once this instance is created, trace info still needs to be
- * appended by caller, depending on the context its created.
- */
- private void createEncodingMemento(String detectedCharsetName) {
- fEncodingMemento = new EncodingMemento();
- fEncodingMemento.setJavaCharsetName(getAppropriateJavaCharset(detectedCharsetName));
- fEncodingMemento.setDetectedCharsetName(detectedCharsetName);
- // TODO: if detectedCharset and spec default is
- // null, need to use "work
- // bench based" defaults.
- fEncodingMemento.setAppropriateDefault(getSpecDefaultEncoding());
- }
-
- /**
- * convience method all subclasses can use (but not override)
- *
- * @param detectedCharsetName
- * @param reason
- */
- final protected void createEncodingMemento(String detectedCharsetName, String reason) {
- createEncodingMemento(detectedCharsetName);
- }
-
- /**
- * convience method all subclasses can use (but not override)
- */
- final protected void ensureInputSet() {
- if (fReader == null) {
- throw new IllegalStateException("input must be set before use"); //$NON-NLS-1$
- }
- }
-
- /**
- * This method can return null, if invalid charset name (in which case
- * "appropriateDefault" should be used, if a name is really need for some
- * "save anyway" cases).
- *
- * @param detectedCharsetName
- * @return
- */
- private String getAppropriateJavaCharset(String detectedCharsetName) {
- String result = null;
- // 1. Check explicit mapping overrides from
- // property file -- its here we pick up "rules" for cases
- // that are not even in Java
- result = CodedIO.checkMappingOverrides(detectedCharsetName);
- // 2. Use the "canonical" name from JRE mappings
- // Note: see Charset JavaDoc, the name you get one
- // with can be alias,
- // the name you get back is "standard" name.
- Charset javaCharset = null;
- try {
- javaCharset = Charset.forName(detectedCharsetName);
- }
- catch (UnsupportedCharsetException e) {
- // only set invalid, if result is same as detected -- they won't
- // be equal if
- // overridden
- if (result != null && result.equals(detectedCharsetName)) {
- fEncodingMemento.setInvalidEncoding(detectedCharsetName);
- }
- }
- catch (IllegalCharsetNameException e) {
- // only set invalid, if result is same as detected -- they won't
- // be equal if
- // overridden
- if (result != null && result.equals(detectedCharsetName)) {
- fEncodingMemento.setInvalidEncoding(detectedCharsetName);
- }
- }
- // give priority to java cononical name, if present
- if (javaCharset != null) {
- result = javaCharset.name();
- // but still allow overrides
- result = CodedIO.checkMappingOverrides(result);
- }
- return result;
- }
-
- public String getEncoding() throws IOException {
- return getEncodingMemento().getDetectedCharsetName();
- }
-
- // to ensure consist overall rules used, we'll mark as
- // final,
- // and require subclasses to provide certain pieces of
- // the
- // implementation
- public EncodingMemento getEncodingMemento() throws IOException {
- ensureInputSet();
- if (!fHeaderParsed) {
- parseInput();
- // we keep track of if header's already been
- // parse, so can make
- // multiple 'get' calls, without causing
- // reparsing.
- fHeaderParsed = true;
- // Note: there is a "hidden assumption" here
- // that an empty
- // string in content should be treated same as
- // not present.
- }
- if (fEncodingMemento == null) {
- handleSpecDefault();
- }
- if (fEncodingMemento == null) {
- // safty net
- fEncodingMemento = new NullMemento();
- }
- return fEncodingMemento;
- }
-
- /**
- * This is to return a default encoding -- as specified by an industry
- * content type spec -- when not present in the stream, for example, XML
- * specifies UTF-8, JSP specifies ISO-8859-1. This method should return
- * null if there is no such "spec default".
- */
- abstract public String getSpecDefaultEncoding();
-
- public EncodingMemento getSpecDefaultEncodingMemento() {
- resetAll();
- EncodingMemento result = null;
- String enc = getSpecDefaultEncoding();
- if (enc != null) {
- createEncodingMemento(enc, EncodingMemento.DEFAULTS_ASSUMED_FOR_EMPTY_INPUT);
- fEncodingMemento.setAppropriateDefault(enc);
- result = fEncodingMemento;
- }
- return result;
- }
-
- private void handleSpecDefault() {
- String encodingName;
- encodingName = getSpecDefaultEncoding();
- if (encodingName != null) {
- // createEncodingMemento(encodingName,
- // EncodingMemento.USED_CONTENT_TYPE_DEFAULT);
- fEncodingMemento = new EncodingMemento();
- fEncodingMemento.setJavaCharsetName(encodingName);
- fEncodingMemento.setAppropriateDefault(encodingName);
- }
- }
-
- /**
- * Every subclass must provide a way to parse the input. This method has
- * several critical responsibilities:
- * <li>set the fEncodingMemento field appropriately, according to the
- * results of the parse of fReader.</li>
- * <li>set fHarderParsed to true, to avoid wasted re-parsing.</li>
- */
- abstract protected void parseInput() throws IOException;
-
- /**
- *
- */
- private void resetAll() {
- fReader = null;
- fHeaderParsed = false;
- fEncodingMemento = null;
- }
-
- /**
- *
- */
- public void set(InputStream inputStream) {
- resetAll();
- fReader = new ByteReader(inputStream);
- try {
- fReader.mark(CodedIO.MAX_MARK_SIZE);
- }
- catch (IOException e) {
- // impossible, since we know ByteReader
- // supports marking
- throw new Error(e);
- }
- }
-
- /**
- *
- */
- public void set(IStorage iStorage) throws CoreException {
- resetAll();
- InputStream inputStream = iStorage.getContents();
- InputStream resettableStream = new BufferedInputStream(inputStream, CodedIO.MAX_BUF_SIZE);
- resettableStream.mark(CodedIO.MAX_MARK_SIZE);
- set(resettableStream);
- // TODO we'll need to "remember" IFile, or
- // get its (or its project's) settings, in case
- // those are needed to handle cases when the
- // encoding is not in the file stream.
- }
-
- /**
- * Note: this is not part of interface to help avoid confusion ... it
- * expected this Reader is a well formed character reader ... that is, its
- * all ready been determined to not be a unicode marked input stream. And,
- * its assumed to be in the correct position, at position zero, ready to
- * read first character.
- */
- public void set(Reader reader) {
- resetAll();
- fReader = reader;
- if (!fReader.markSupported()) {
- fReader = new BufferedReader(fReader);
- }
- try {
- fReader.mark(CodedIO.MAX_MARK_SIZE);
- }
- catch (IOException e) {
- // impossble, since we just checked if markable
- throw new Error(e);
- }
- }
-}

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