1 files changed, 202 insertions, 0 deletions
diff --git a/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/param/AbstractProblemPreference.java b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/param/AbstractProblemPreference.java
new file mode 100644
index 0000000..91969fc
--- /dev/null
+++ b/org.eclipse.cdt.codan.core/src/org/eclipse/cdt/codan/core/param/AbstractProblemPreference.java
@@ -0,0 +1,202 @@
+/*******************************************************************************
+ * Copyright (c) 2009, 2010 Alena Laskavaia 
+ * 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:
+ *    Alena Laskavaia  - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.codan.core.param;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.StreamTokenizer;
+
+/**
+ * Default implementation of problem preference. It keeps preference metadata
+ * together with preference value. Some implementations may separate them.
+ * 
+ */
+public abstract class AbstractProblemPreference implements IProblemPreference {
+	/**
+	 * default key for a preference
+	 */
+	public static final String PARAM = "params"; //$NON-NLS-1$
+	private String key = PARAM;
+	private String label = ""; //$NON-NLS-1$
+	private String toolTip = null;
+	private String uiInfo;
+	private IProblemPreference parent;
+
+	public String getLabel() {
+		return label;
+	}
+
+	public String getToolTip() {
+		return toolTip;
+	}
+
+	public String getKey() {
+		return key;
+	}
+
+	public String getUiInfo() {
+		return uiInfo;
+	}
+
+	/**
+	 * Set preference key for itself
+	 * 
+	 * @param key
+	 */
+	public void setKey(String key) {
+		if (key == null)
+			throw new NullPointerException("key"); //$NON-NLS-1$
+		if (isValidIdentifier(key))
+			this.key = key;
+		else
+			throw new IllegalArgumentException(
+					"Key must have java identifier syntax or number, i.e no dots and other funky stuff: " + key); //$NON-NLS-1$
+	}
+
+	protected boolean isValidIdentifier(String id) {
+		if (id == null)
+			return false;
+		int n = id.length();
+		if (n == 0)
+			return false;
+		if (id.equals("#")) //$NON-NLS-1$
+			return true;
+		for (int i = 0; i < n; i++)
+			if (!Character.isJavaIdentifierPart(id.charAt(i)))
+				return false;
+		return true;
+	}
+
+	/**
+	 * Sets a label for UI control
+	 * 
+	 * @param label
+	 */
+	public void setLabel(String label) {
+		if (label == null)
+			throw new NullPointerException("Label cannot be null"); //$NON-NLS-1$
+		this.label = label;
+	}
+
+	/**
+	 * Sets tooltip for ui control. Not supported now.
+	 * 
+	 * @param tooltip
+	 */
+	public void setToolTip(String tooltip) {
+		this.toolTip = tooltip;
+	}
+
+	/**
+	 * Sets uiinfo for ui control. Not supported now.
+	 * 
+	 * @param uiinfo
+	 */
+	public void setUiInfo(String uiinfo) {
+		this.uiInfo = uiinfo;
+	}
+
+	public Object getValue() {
+		throw new UnsupportedOperationException();
+	}
+
+	public void setValue(Object value) {
+		throw new UnsupportedOperationException();
+	}
+
+	@Override
+	public Object clone() {
+		try {
+			return super.clone();
+		} catch (CloneNotSupportedException e) {
+			return null;
+		}
+	}
+
+	/**
+	 * @param str
+	 * @return
+	 */
+	protected StreamTokenizer getImportTokenizer(String str) {
+		ByteArrayInputStream st = new ByteArrayInputStream(str.getBytes());
+		StreamTokenizer tokenizer = new StreamTokenizer(new InputStreamReader(
+				st));
+		tokenizer.resetSyntax();
+		tokenizer.quoteChar('"');
+		tokenizer.wordChars('_', '_');
+		tokenizer.wordChars('-', '-');
+		tokenizer.wordChars('.', '.');
+		tokenizer.wordChars('0', '9');
+		tokenizer.wordChars('a', 'z');
+		tokenizer.wordChars('A', 'Z');
+		tokenizer.wordChars(128 + 32, 255);
+		tokenizer.whitespaceChars(0, ' ');
+		tokenizer.commentChar('/');
+		return tokenizer;
+	}
+
+	public IProblemPreference getParent() {
+		return parent;
+	}
+
+	/**
+	 * @param parent
+	 *        the parent to set
+	 */
+	public void setParent(IProblemPreference parent) {
+		this.parent = parent;
+	}
+
+	public String getQualifiedKey() {
+		if (parent == null)
+			return getKey();
+		return parent.getQualifiedKey() + "." + getKey(); //$NON-NLS-1$
+	}
+
+	/**
+	 * @param tokenizer
+	 * @throws IOException
+	 */
+	public abstract void importValue(StreamTokenizer tokenizer)
+			throws IOException;
+
+	public void importValue(String str) {
+		StreamTokenizer tokenizer = getImportTokenizer(str);
+		try {
+			importValue(tokenizer);
+		} catch (IllegalArgumentException e) {
+			throw new IllegalArgumentException(str, e);
+		} catch (IOException e) {
+			throw new IllegalArgumentException(e);
+		}
+	}
+
+	protected String escape(String x) {
+		x = x.replaceAll("[\"\\\\]", "\\\\$0"); //$NON-NLS-1$//$NON-NLS-2$
+		return "\"" + x + "\""; //$NON-NLS-1$//$NON-NLS-2$
+	}
+
+	/**
+	 * @param str
+	 * @return
+	 */
+	protected String unescape(String str) {
+		StreamTokenizer tokenizer = getImportTokenizer(str);
+		try {
+			tokenizer.nextToken();
+		} catch (IOException e) {
+			return null;
+		}
+		String sval = tokenizer.sval;
+		return sval;
+	}
+}