| /* |
| * Copyright 2000-2012 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 org.jetbrains.idea.maven.dom.references; |
| |
| import com.intellij.openapi.util.Key; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.openapi.util.text.StringUtil; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiReference; |
| import com.intellij.psi.PsiReferenceProvider; |
| import com.intellij.psi.xml.XmlAttribute; |
| import com.intellij.util.ProcessingContext; |
| import org.jdom.Element; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.idea.maven.dom.MavenDomUtil; |
| import org.jetbrains.idea.maven.dom.MavenPropertyResolver; |
| import org.jetbrains.idea.maven.project.MavenProject; |
| import org.jetbrains.idea.maven.utils.MavenJDOMUtil; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| public class MavenFilteredPropertyPsiReferenceProvider extends PsiReferenceProvider { |
| |
| private static final Key<Pattern> KEY = Key.create("MavenFilteredPropertyPsiReferenceProvider:delimitersKey"); |
| |
| public static final Pattern DEFAULT_DELIMITERS = MavenPropertyResolver.PATTERN; |
| |
| @NotNull |
| public static Pattern getDelimitersPattern(MavenProject mavenProject) { |
| Pattern res = mavenProject.getCachedValue(KEY); |
| if (res == null) { |
| Element cfg = mavenProject.getPluginConfiguration("org.apache.maven.plugins", "maven-resources-plugin"); |
| if (cfg == null) { |
| res = DEFAULT_DELIMITERS; |
| } |
| else { |
| List<String> delimiters = MavenJDOMUtil.findChildrenValuesByPath(cfg, "delimiters", "delimiter"); |
| if (delimiters.isEmpty() || delimiters.size() > 10) { |
| res = DEFAULT_DELIMITERS; |
| } |
| else { |
| StringBuilder patternBuilder = new StringBuilder(); |
| |
| for (String delimiter : delimiters) { |
| delimiter = delimiter.trim(); |
| if (delimiter.isEmpty()) continue; |
| |
| int ind = delimiter.indexOf('*'); |
| if (ind >= 0) { |
| appendDelimiter(patternBuilder, delimiter.substring(0, ind), delimiter.substring(ind + 1)); |
| } |
| else { |
| appendDelimiter(patternBuilder, delimiter, delimiter); |
| } |
| } |
| |
| // <useDefaultDelimiters> is not used if custom delimiters are not present. |
| boolean useDefaultDelimiters = true; |
| |
| String useDefaultDelimitersText = cfg.getChildText("useDefaultDelimiters"); |
| if (StringUtil.isNotEmpty(useDefaultDelimitersText)) { |
| useDefaultDelimiters = Boolean.parseBoolean(useDefaultDelimitersText); |
| } |
| |
| if (useDefaultDelimiters) { |
| appendDelimiter(patternBuilder, "${", "}"); |
| appendDelimiter(patternBuilder, "@", "@"); |
| } |
| |
| res = Pattern.compile(patternBuilder.toString()); |
| } |
| } |
| |
| res = mavenProject.putCachedValue(KEY, res); |
| } |
| |
| return res; |
| } |
| |
| private static void appendDelimiter(StringBuilder pattern, String prefix, String suffix) { |
| if (pattern.length() > 0) { |
| pattern.append('|'); |
| } |
| pattern.append(Pattern.quote(prefix)).append("(.+?)").append(Pattern.quote(suffix)); |
| } |
| |
| private static boolean shouldAddReference(@NotNull PsiElement element) { |
| if (element.getFirstChild() == element.getLastChild()) { |
| return true; // Add to all leaf elements |
| } |
| |
| if (element instanceof XmlAttribute) { |
| return true; |
| } |
| |
| return false; // Don't add references to all element to avoid performance problem. |
| } |
| |
| @NotNull |
| @Override |
| public PsiReference[] getReferencesByElement(@NotNull PsiElement element, @NotNull ProcessingContext context) { |
| if (!shouldAddReference(element)) { |
| // Add reference to element with one child or leaf element only to avoid performance problem. |
| return PsiReference.EMPTY_ARRAY; |
| } |
| |
| if (!MavenDomUtil.isFilteredResourceFile(element)) return PsiReference.EMPTY_ARRAY; |
| |
| String text = element.getText(); |
| if (StringUtil.isEmptyOrSpaces(text)) return PsiReference.EMPTY_ARRAY; |
| |
| MavenProject mavenProject = MavenDomUtil.findContainingProject(element); |
| if (mavenProject == null) return PsiReference.EMPTY_ARRAY; |
| |
| List<PsiReference> res = null; |
| |
| Pattern pattern = getDelimitersPattern(mavenProject); |
| |
| Matcher matcher = pattern.matcher(text); |
| |
| int groupCount = matcher.groupCount(); |
| |
| while (matcher.find()) { |
| String propertyName = null; |
| int from = 0; |
| |
| for (int i = 0; i < groupCount; i++) { |
| propertyName = matcher.group(i + 1); |
| if (propertyName != null) { |
| from = matcher.start(i + 1); |
| break; |
| } |
| } |
| |
| assert propertyName != null; |
| |
| if (res == null) { |
| res = new ArrayList<PsiReference>(); |
| } |
| |
| TextRange range = TextRange.from(from, propertyName.length()); |
| |
| res.add(new MavenFilteredPropertyPsiReference(mavenProject, element, propertyName, range)); |
| } |
| |
| return res == null ? PsiReference.EMPTY_ARRAY : res.toArray(new PsiReference[res.size()]); |
| } |
| } |