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PathInfo.java
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PathInfo.java
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/*
* Copyright 2011-2019 the original author or authors.
*
* 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.appng.api;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.lang3.StringUtils;
import org.appng.api.model.Application;
import org.appng.api.model.Site;
/**
*
* Default {@link Path}-implementation
*
* @author Matthias Müller
*
*/
public class PathInfo implements Path {
private static final String OUTPUT_PREFIX = "_";
private static final String DOT = ".";
private final String guiPath;
private final String servicePath;
private final List<String> blobDirectories;
private final List<String> documentDirectories;
private String repositoryPath;
private final String host;
private String rootPath;
private String servletPath;
private String applicationName;
private String actionName;
private String actionValue;
private String currentSite;
private List<String> pathElements;
private List<String> jspUrlParams = null;
private int siteIdx = -1;
private int applicationIdx = -1;
private int pageIdx = -1;
private String page;
private int rootIdx;
private String extension;
private String domain;
/**
* Creates a new {@link PathInfo}
*
* @param host
* the host of the current {@link org.appng.api.model.Site}
* @param domain
* the domain of the current {@link org.appng.api.model.Site}
* @param currentSite
* the name of the current {@link org.appng.api.model.Site}
* @param servletPath
* the current servletPath, as returned by {@link javax.servlet.http.HttpServletRequest#getServletPath()}
* @param guiPath
* value of the property {@value org.appng.api.SiteProperties#MANAGER_PATH} of the current
* {@link org.appng.api.model.Site}
* @param servicePath
* value of the property {@value org.appng.api.SiteProperties#SERVICE_PATH} of the current
* {@link org.appng.api.model.Site}
* @param blobDirectories
* a list parsed from the property {@value org.appng.api.SiteProperties#ASSETS_DIR} of the current
* {@link org.appng.api.model.Site}
* @param documentDirectories
* a list parsed from the property {@value org.appng.api.SiteProperties#DOCUMENT_DIR} of the current
* {@link org.appng.api.model.Site}
* @param repositoryPath
* value of the platform property {@value org.appng.api.Platform.Property#REPOSITORY_PATH}
* @param extension
* value of the platform property {@value org.appng.api.Platform.Property#JSP_FILE_TYPE}
*/
public PathInfo(String host, String domain, String currentSite, String servletPath, String guiPath,
String servicePath, List<String> blobDirectories, List<String> documentDirectories, String repositoryPath,
String extension) {
this.host = host;
this.domain = domain;
this.currentSite = currentSite;
this.servletPath = servletPath;
this.guiPath = guiPath;
this.servicePath = servicePath;
this.blobDirectories = blobDirectories;
this.documentDirectories = documentDirectories;
this.repositoryPath = repositoryPath;
this.extension = extension;
parse();
}
private void parse() {
if (null == servletPath) {
this.servletPath = "";
}
this.pathElements = splitPath(servletPath);
this.rootIdx = 1;
if (hasElementAt(rootIdx)) {
this.rootPath = SEPARATOR + pathElements.get(rootIdx);
} else {
this.rootPath = servletPath;
}
if (isGui()) {
int idx = pathElements.indexOf(guiPath.substring(1));
if (hasElementAt(idx)) {
if (hasElementAt(idx + 1)) {
siteIdx = idx + 1;
if (pathElements.get(siteIdx).startsWith(OUTPUT_PREFIX)) {
siteIdx += 1;
if (pathElements.get(siteIdx).startsWith(OUTPUT_PREFIX)) {
siteIdx += 1;
}
}
if (hasElementAt(siteIdx + 1)) {
applicationIdx = siteIdx + 1;
if (hasElementAt(applicationIdx + 1)) {
pageIdx = applicationIdx + 1;
}
}
}
}
} else if (isService()) {
int idx = pathElements.indexOf(servicePath.substring(1));
if (hasElementAt(idx + 1)) {
this.siteIdx = idx + 1;
}
if (hasElementAt(idx + 2)) {
this.applicationIdx = idx + 2;
}
}
}
private List<String> splitPath(String path) {
List<String> elements = new ArrayList<>(Arrays.asList(path.split(SEPARATOR)));
if (elements.size() > 0) {
int lastIdx = elements.size() - 1;
String lastElement = elements.get(lastIdx);
int anchorIndex = lastElement.indexOf('#');
if (anchorIndex > 0) {
elements.remove(lastIdx);
elements.add(lastElement.substring(0, anchorIndex));
}
}
return elements;
}
public boolean hasElementAt(int idx) {
return idx > -1 && idx < pathElements.size();
}
public String getLastElement() {
return getElementAt(getElementCount() - 1);
}
public String getElementAt(int idx) {
if (hasElementAt(idx)) {
return pathElements.get(idx);
}
return null;
}
public void checkPathLength(int minLength) throws IOException {
if (pathElements.size() < minLength) {
throw new IOException("invalid path");
}
}
public boolean isStaticContent() {
return blobDirectories.contains(rootPath);
}
public boolean isDocument() {
return documentDirectories.contains(rootPath);
}
public boolean isGui() {
return hasElementAt(1) && pathElements.get(1).equals(guiPath.substring(1));
}
public boolean isService() {
return hasElementAt(1) && pathElements.get(1).equals(servicePath.substring(1));
}
public boolean isJsp() {
return servletPath != null && servletPath.endsWith(DOT + extension);
}
public String getSiteName() {
if (hasSite()) {
return pathElements.get(siteIdx);
} else {
return currentSite;
}
}
public boolean hasSite() {
return hasElementAt(siteIdx);
}
/**
* Manually sets the name of the selected {@link Application}
*
* @param application
* the name of the {@link Application}
*/
public void setApplicationName(String application) {
this.applicationName = application;
this.applicationIdx = pathElements.indexOf(application);
this.pageIdx = -1;
}
public String getApplicationName() {
if (null != applicationName) {
return applicationName;
} else if (hasApplication()) {
return pathElements.get(applicationIdx);
}
return null;
}
public boolean hasApplication() {
return hasElementAt(applicationIdx);
}
/**
* Manually sets the page within a {@link Application}
*
* @param page
* the page to set
*/
public void setPage(String page) {
this.page = page;
this.pageIdx = pathElements.indexOf(page);
}
public String getPage() {
if (null == this.page) {
if (hasElementAt(pageIdx)) {
return pathElements.get(pageIdx);
}
}
return page;
}
/**
* Manually sets the name and value for an action within a {@link Application}
*
* @param actionName
* the name of the action
* @param actionValue
* the value for the action
*/
public void setAction(String actionName, String actionValue) {
this.actionName = actionName;
this.actionValue = actionValue;
}
public String getActionName() {
return actionName;
}
public String getActionValue() {
return actionValue;
}
public boolean hasAction() {
return StringUtils.isNotEmpty(actionName) && StringUtils.isNotEmpty(actionValue);
}
private String initJspUrlParameters(File wwwRootFile) {
String realServletPath = servletPath;
PathSegmenter segmenter = new PathSegmenter(servletPath);
for (int i = 1; i <= segmenter.size(); i++) {
realServletPath = segmenter.getSegments(i);
File jspFile = new File(wwwRootFile, realServletPath + DOT + extension);
if (jspFile.exists()) {
jspUrlParams = segmenter.getSegmentsList(i, segmenter.size());
realServletPath += DOT + extension;
break;
}
}
return realServletPath;
}
public List<String> getApplicationUrlParameters() {
if (isGui()) {
if (hasElementAt(pageIdx) && hasElementAt(pageIdx + 1)) {
List<String> params = pathElements.subList(pageIdx + 1, pathElements.size());
return params;
}
} else if (isService()) {
if (hasElementAt(applicationIdx) && hasElementAt(applicationIdx + 3)) {
List<String> params = pathElements.subList(applicationIdx + 3, pathElements.size());
return params;
}
}
return new ArrayList<>(0);
}
public List<String> getJspUrlParameters() {
if (null == jspUrlParams) {
jspUrlParams = new ArrayList<>();
}
return jspUrlParams;
}
public String getRootPath() {
return rootPath;
}
public String getHost() {
return host;
}
public String getDomain() {
return domain;
}
public String getServletPath() {
return servletPath;
}
public String getCurrentPath() {
if (isGui() && isRoot()) {
String result = rootPath + SEPARATOR + getSiteName();
if (getApplicationName() != null) {
result += SEPARATOR + getApplicationName();
}
return result;
}
return getServletPath();
}
public boolean isRoot() {
return servletPath.equals(rootPath);
}
public boolean isRootIgnoreTrailingSlash() {
if (isRoot() || (servletPath.equals(rootPath + SEPARATOR))) {
return true;
} else {
return false;
}
}
public boolean isRepository() {
return servletPath.startsWith(SEPARATOR + repositoryPath);
}
public String getGuiPath() {
return guiPath;
}
public List<String> getBlobDirectories() {
return blobDirectories;
}
public List<String> getDocumentDirectories() {
return documentDirectories;
}
public String getPlatformUrl() {
return domain + servletPath;
}
public String getOutputFormat() {
if (isGui()) {
if (siteIdx - rootIdx > 1) {
return pathElements.get(rootIdx + 1).substring(1);
}
}
return null;
}
public String getOutputType() {
if (isGui()) {
if (siteIdx - rootIdx > 2) {
return pathElements.get(rootIdx + 2).substring(1);
}
}
return null;
}
public boolean hasOutputFormat() {
return null != getOutputFormat();
}
public boolean hasOutputType() {
return null != getOutputType();
}
public String getService() {
if (isService()) {
if (hasElementAt(applicationIdx) && hasElementAt(applicationIdx + 2)) {
String parameters = pathElements.get(applicationIdx + 2);
int indexOf = parameters.indexOf("?");
if (indexOf > 0) {
return parameters.substring(0, indexOf);
}
return parameters;
}
}
return null;
}
public String getServicePath() {
return servicePath;
}
public boolean isPathSelected(String path) {
List<String> pathChunks = splitPath(path);
if (getElementCount() >= pathChunks.size()) {
for (int i = 0; i < pathChunks.size(); i++) {
if (!pathChunks.get(i).equals(getElementAt(i))) {
return false;
}
}
return true;
}
return false;
}
public String getOutputPrefix() {
String prefix = "";
if (hasOutputFormat()) {
prefix += SEPARATOR + OUTPUT_PREFIX + getOutputFormat();
if (hasOutputType()) {
prefix += SEPARATOR + OUTPUT_PREFIX + getOutputType();
}
}
return prefix;
}
public String getExtension() {
return extension;
}
/**
* Builds the the path to which a {@link HttpServletRequest} has to be forwarded to in order the retrieve a file
* from a document directory. If the requested fiel is a JSP, the JSP Url-Parameters are being initialized.
*
* @param wwwRootPath
* the relative path to a {@link Site}s web-folder, under which the document-folders reside
* @param wwwRootFile
* a file representing the very same relative path
* @return the forward path
* @see #isDocument()
* @see #getDocumentDirectories()
* @see #isJsp()
*/
public String getForwardPath(String wwwRootPath, File wwwRootFile) {
String realServletPath = initJspUrlParameters(wwwRootFile);
return wwwRootPath + realServletPath;
}
public int getApplicationIndex() {
return applicationIdx;
}
public int getElementCount() {
return pathElements.size();
}
class PathSegmenter {
private final List<String> segments;
public PathSegmenter(String servletPath) {
this.segments = Arrays.asList(servletPath.split(SEPARATOR));
}
public int size() {
return segments.size();
}
public List<String> getSegmentsList(int fromIndex, int toIndex) {
return segments.subList(fromIndex, toIndex);
}
public String getSegments(int index) {
StringBuffer segmentString = new StringBuffer();
getSegmentsList(1, index).forEach(segment -> segmentString.append(SEPARATOR + segment));
return 0 == segmentString.length() ? SEPARATOR : segmentString.toString();
}
}
}