package com.psddev.cms.db;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import com.psddev.dari.db.Reference;
import com.psddev.dari.db.ReferentialText;
import com.psddev.dari.db.State;
import com.psddev.dari.util.CodeUtils;
import com.psddev.dari.util.HtmlGrid;
import com.psddev.dari.util.JspUtils;
import com.psddev.dari.util.ObjectUtils;
import com.psddev.dari.util.PageContextFilter;
import com.psddev.dari.util.Settings;
import com.psddev.dari.util.StorageItem;
import com.psddev.dari.util.StringUtils;
import com.psddev.dari.util.UrlBuilder;
public final class ElFunctionUtils {
private ElFunctionUtils() {
}
/**
* Escapes the given {@code string} so that it's safe to use in HTML.
*
* @param string If {@code null}, returns an empty string.
* @return Never {@code null}.
*/
public static String html(String string) {
return string != null ? StringUtils.escapeHtml(string) : "";
}
/**
* Returns {@code true} if the current request is in the given
* {@code context}.
*
* @param context If {@code null}, returns {@code false}.
* @see ContextTag.Static#isInContext
*/
public static boolean inContext(String context) {
return ContextTag.Static.isInContext(PageContextFilter.Static.getRequest(), context);
}
/**
* Returns {@code true} if the given {@code object} is an instance of the
* class represented by the given {@code className}.
*
* @throws IllegalArgumentException If there isn't a class with the given
* {@code className}.
*/
public static boolean instanceOf(Object object, String className) {
Class<?> c = ObjectUtils.getClassByName(className);
if (c != null) {
return c.isInstance(object);
} else {
throw new IllegalArgumentException(String.format(
"[%s] is not a valid class name!", className));
}
}
/**
* Escapes the given {@code string} so that it's safe to use in
* JavaScript.
*
* @param string If {@code null}, returns an empty string.
* @return Never {@code null}.
*/
public static String js(String string) {
return string != null ? StringUtils.escapeJavaScript(string) : "";
}
public static List<String> listLayouts(Object object, String field) {
return object != null ? State.getInstance(object).as(Renderer.Data.class).getListLayouts().get(field) : null;
}
/**
* Returns the number of markers with the given {@code markerInternalName}
* in the given {@code text}.
*
* @param text If {@code null}, returns {@code 0}.
* @param markerInternalName If blank, returns {@code 0}.
*/
public static int markerCount(ReferentialText text, String markerInternalName) {
int count = 0;
if (text != null && !ObjectUtils.isBlank(markerInternalName)) {
for (Object item : text) {
if (item instanceof Reference) {
Object referenced = ((Reference) item).getObject();
if (referenced instanceof ReferentialTextMarker &&
(((ReferentialTextMarker) referenced).getInternalName().equals(markerInternalName))) {
++ count;
}
}
}
}
return count;
}
/**
* Returns the plain {@linkplain StorageItem CDN} URL associated
* with the given {@code servletPath}.
*/
public static String plainResource(String servletPath) {
ServletContext servletContext = null;
HttpServletRequest request = null;
try {
servletContext = PageContextFilter.Static.getServletContext();
request = PageContextFilter.Static.getRequest();
} catch (IllegalStateException ex) {
// Checked for nulls right below.
}
if (servletContext != null && request != null) {
HtmlGrid.Static.addStyleSheet(request, servletPath);
if (ObjectUtils.coalesce(
Settings.get(Boolean.class, "cms/isResourceInStorage"),
Settings.isProduction())) {
StorageItem item = StorageItem.Static.getPlainResource(null, servletContext, servletPath);
if (item != null) {
return JspUtils.isSecure(request) ?
item.getSecurePublicUrl() :
item.getPublicUrl();
}
}
}
return pathWithTimestamp(servletContext, servletPath);
}
private static String pathWithTimestamp(ServletContext context, String path) {
if (context != null) {
try {
URL resource = CodeUtils.getResource(context, path);
if (resource != null) {
URLConnection resourceConnection = resource.openConnection();
InputStream resourceInput = resourceConnection.getInputStream();
try {
return StringUtils.addQueryParameters(
path,
"_", resourceConnection.getLastModified());
} finally {
resourceInput.close();
}
}
} catch (IOException error) {
// Ignore any errors and just return the path as is.
}
}
return path;
}
/**
* Returns the plain or gzipped {@linkplain StorageItem CDN} URL
* associated with the given {@code servletPath}.
*/
public static String resource(String servletPath) {
ServletContext servletContext = null;
HttpServletRequest request = null;
try {
servletContext = PageContextFilter.Static.getServletContext();
request = PageContextFilter.Static.getRequest();
} catch (IllegalStateException ex) {
// Checked for nulls right below.
}
if (servletContext != null && request != null) {
HtmlGrid.Static.addStyleSheet(request, servletPath);
if (ObjectUtils.coalesce(
Settings.get(Boolean.class, "cms/isResourceInStorage"),
Settings.isProduction())) {
String encodings = request.getHeader("Accept-Encoding");
StorageItem item = ObjectUtils.isBlank(encodings) || !encodings.contains("gzip") ?
StorageItem.Static.getPlainResource(null, servletContext, servletPath) :
StorageItem.Static.getGzippedResource(null, servletContext, servletPath);
if (item != null) {
return JspUtils.isSecure(request) ?
item.getSecurePublicUrl() :
item.getPublicUrl();
}
}
}
return pathWithTimestamp(servletContext, servletPath);
}
public static UrlBuilder absolutePath(String path) {
return new UrlBuilder(PageContextFilter.Static.getRequest()).absolutePath(path);
}
public static UrlBuilder currentPath() {
return new UrlBuilder(PageContextFilter.Static.getRequest()).currentPath();
}
public static UrlBuilder path(String path) {
return new UrlBuilder(PageContextFilter.Static.getRequest()).path(path);
}
}