| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.codeInsight.intention.impl; |
| |
| import com.intellij.codeInsight.CodeInsightBundle; |
| import com.intellij.codeInsight.FileModificationService; |
| import com.intellij.codeInsight.intention.PsiElementBaseIntentionAction; |
| import com.intellij.javaee.ExternalResourceManager; |
| import com.intellij.lang.java.JavaLanguage; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.Pair; |
| import com.intellij.openapi.vfs.VfsUtil; |
| import com.intellij.openapi.vfs.VirtualFile; |
| import com.intellij.psi.*; |
| import com.intellij.psi.javadoc.PsiDocComment; |
| import com.intellij.psi.search.PsiElementProcessor; |
| import com.intellij.psi.tree.TokenSet; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.psi.xml.XmlEntityDecl; |
| import com.intellij.psi.xml.XmlFile; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.xml.util.XmlUtil; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| public class ConvertToBasicLatinAction extends PsiElementBaseIntentionAction { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.codeInsight.intention.impl.ConvertToBasicLatinAction"); |
| |
| @Override |
| public boolean isAvailable(@NotNull final Project project, final Editor editor, @NotNull final PsiElement element) { |
| if (!element.getLanguage().isKindOf(JavaLanguage.INSTANCE)) return false; |
| final Pair<PsiElement, Handler> pair = findHandler(element); |
| if (pair == null) return false; |
| |
| final String text = pair.first.getText(); |
| for (int i = 0; i < text.length(); i++) { |
| if (shouldConvert(text.charAt(i))) return true; |
| } |
| |
| return false; |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return CodeInsightBundle.message("intention.convert.to.basic.latin"); |
| } |
| |
| @NotNull |
| @Override |
| public String getText() { |
| return getFamilyName(); |
| } |
| |
| @Override |
| public void invoke(@NotNull final Project project, final Editor editor, @NotNull final PsiElement element) throws IncorrectOperationException { |
| final Pair<PsiElement, Handler> pair = findHandler(element); |
| if (pair == null) return; |
| final PsiElement workElement = pair.first; |
| final Handler handler = pair.second; |
| if (!FileModificationService.getInstance().preparePsiElementForWrite(workElement)) return; |
| final String newText = handler.processText(workElement); |
| final PsiElement newElement = handler.createReplacement(workElement, newText); |
| workElement.replace(newElement); |
| } |
| |
| @Nullable |
| private static Pair<PsiElement, Handler> findHandler(final PsiElement element) { |
| for (final Handler handler : ourHandlers) { |
| final PsiElement applicable = handler.findApplicable(element); |
| if (applicable != null) { |
| return Pair.create(applicable, handler); |
| } |
| } |
| |
| return null; |
| } |
| |
| private static boolean shouldConvert(final char ch) { |
| return Character.UnicodeBlock.of(ch) != Character.UnicodeBlock.BASIC_LATIN; |
| } |
| |
| private abstract static class Handler { |
| @Nullable |
| public abstract PsiElement findApplicable(final PsiElement element); |
| |
| public String processText(final PsiElement element) { |
| final String text = element.getText(); |
| final StringBuilder sb = new StringBuilder(); |
| for (int i = 0; i < text.length(); i++) { |
| final char ch = text.charAt(i); |
| if (!shouldConvert(ch)) { |
| sb.append(ch); |
| } |
| else { |
| convert(sb, ch); |
| } |
| } |
| return sb.toString(); |
| } |
| |
| protected abstract void convert(StringBuilder sb, char ch); |
| |
| public abstract PsiElement createReplacement(final PsiElement element, final String newText); |
| } |
| |
| private static final Handler[] ourHandlers = { new MyLiteralHandler(), new MyDocCommentHandler(), new MyCommentHandler() }; |
| |
| private static class MyLiteralHandler extends Handler { |
| private static final TokenSet LITERALS = TokenSet.create(JavaTokenType.CHARACTER_LITERAL, JavaTokenType.STRING_LITERAL); |
| |
| @Override |
| public PsiElement findApplicable(final PsiElement element) { |
| final PsiElement parent = element.getParent(); |
| return element instanceof PsiJavaToken && |
| LITERALS.contains(((PsiJavaToken)element).getTokenType()) && |
| parent instanceof PsiLiteralExpression |
| ? parent : null; |
| } |
| |
| @Override |
| public PsiElement createReplacement(final PsiElement element, final String newText) { |
| return JavaPsiFacade.getElementFactory(element.getProject()).createExpressionFromText(newText, element.getParent()); |
| } |
| |
| @Override |
| protected void convert(final StringBuilder sb, final char ch) { |
| sb.append(String.format("\\u%04x", (int)ch)); |
| } |
| } |
| |
| private static class MyDocCommentHandler extends Handler { |
| private static Map<Character, String> ourEntities = null; |
| |
| @Override |
| public PsiElement findApplicable(final PsiElement element) { |
| return PsiTreeUtil.getParentOfType(element, PsiDocComment.class, false); |
| } |
| |
| @Override |
| public String processText(final PsiElement element) { |
| loadEntities(element.getProject()); |
| return super.processText(element); |
| } |
| |
| @Override |
| protected void convert(final StringBuilder sb, final char ch) { |
| assert ourEntities != null; |
| final String entity = ourEntities.get(ch); |
| if (entity != null) { |
| sb.append('&').append(entity).append(';'); |
| } |
| else { |
| sb.append("&#x").append(Integer.toHexString(ch)).append(';'); |
| } |
| } |
| |
| @Override |
| public PsiElement createReplacement(final PsiElement element, final String newText) { |
| return JavaPsiFacade.getElementFactory(element.getProject()).createDocCommentFromText(newText); |
| } |
| |
| private static void loadEntities(final Project project) { |
| if (ourEntities != null) return; |
| |
| final XmlFile file; |
| try { |
| final String url = ExternalResourceManager.getInstance().getResourceLocation(XmlUtil.HTML4_LOOSE_URI, project); |
| if (url == null) { LOG.error("Namespace not found: " + XmlUtil.HTML4_LOOSE_URI); return; } |
| final VirtualFile vFile = VfsUtil.findFileByURL(new URL(url)); |
| if (vFile == null) { LOG.error("Resource not found: " + url); return; } |
| final PsiFile psiFile = PsiManager.getInstance(project).findFile(vFile); |
| if (!(psiFile instanceof XmlFile)) { LOG.error("Unexpected resource: " + psiFile); return; } |
| file = (XmlFile)psiFile; |
| } |
| catch (MalformedURLException e) { |
| LOG.error(e); return; |
| } |
| |
| ourEntities = new HashMap<Character, String>(); |
| final Pattern pattern = Pattern.compile("&#(\\d+);"); |
| XmlUtil.processXmlElements(file, new PsiElementProcessor() { |
| @Override |
| public boolean execute(@NotNull PsiElement element) { |
| if (element instanceof XmlEntityDecl) { |
| final XmlEntityDecl entity = (XmlEntityDecl)element; |
| final Matcher m = pattern.matcher(entity.getValueElement().getValue()); |
| if (m.matches()) { |
| final char i = (char)Integer.parseInt(m.group(1)); |
| if (shouldConvert(i)) { |
| ourEntities.put(i, entity.getName()); |
| } |
| } |
| } |
| return true; |
| } |
| }, true); |
| } |
| } |
| |
| private static class MyCommentHandler extends MyDocCommentHandler { |
| @Override |
| public PsiElement findApplicable(final PsiElement element) { |
| return element instanceof PsiComment ? element : null; |
| } |
| |
| @Override |
| public PsiElement createReplacement(final PsiElement element, final String newText) { |
| return JavaPsiFacade.getElementFactory(element.getProject()).createCommentFromText(newText, element.getParent()); |
| } |
| } |
| } |