Dissolve gerrit-httpd top-level directory

Change-Id: I287b29b893c6f561dbbf6fa04dc714b4b7f48d54
2017-08-23 08:20:28 +02:00
parent 3675f601fa
commit a84dbc81bf
134 changed files with 49 additions and 52 deletions
--- a/java/com/google/gerrit/httpd/template/SiteHeaderFooter.java
+++ b/java/com/google/gerrit/httpd/template/SiteHeaderFooter.java
@@ -0,0 +1,148 @@
+// Copyright (C) 2013 The Android Open Source Project
+//
+// 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.google.gerrit.httpd.template;
+
+import static com.google.gerrit.common.FileUtil.lastModified;
+
+import com.google.common.base.Strings;
+import com.google.gerrit.httpd.HtmlDomUtil;
+import com.google.gerrit.server.config.GerritServerConfig;
+import com.google.gerrit.server.config.SitePaths;
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import java.io.IOException;
+import java.nio.file.Path;
+import org.eclipse.jgit.lib.Config;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+
+@Singleton
+public class SiteHeaderFooter {
+  private static final Logger log = LoggerFactory.getLogger(SiteHeaderFooter.class);
+
+  private final boolean refreshHeaderFooter;
+  private final SitePaths sitePaths;
+  private volatile Template template;
+
+  @Inject
+  SiteHeaderFooter(@GerritServerConfig Config cfg, SitePaths sitePaths) {
+    this.refreshHeaderFooter = cfg.getBoolean("site", "refreshHeaderFooter", true);
+    this.sitePaths = sitePaths;
+
+    try {
+      Template t = new Template(sitePaths);
+      t.load();
+      template = t;
+    } catch (IOException e) {
+      log.warn("Cannot load site header or footer", e);
+    }
+  }
+
+  public Document parse(Class<?> clazz, String name) throws IOException {
+    Template t = template;
+    if (refreshHeaderFooter && t.isStale()) {
+      t = new Template(sitePaths);
+      try {
+        t.load();
+        template = t;
+      } catch (IOException e) {
+        log.warn("Cannot refresh site header or footer", e);
+        t = template;
+      }
+    }
+
+    Document doc = HtmlDomUtil.parseFile(clazz, name);
+    injectCss(doc, "gerrit_sitecss", t.css);
+    injectXml(doc, "gerrit_header", t.header);
+    injectXml(doc, "gerrit_footer", t.footer);
+    return doc;
+  }
+
+  private void injectCss(Document doc, String id, String content) {
+    Element e = HtmlDomUtil.find(doc, id);
+    if (e != null) {
+      if (!Strings.isNullOrEmpty(content)) {
+        while (e.getFirstChild() != null) {
+          e.removeChild(e.getFirstChild());
+        }
+        e.removeAttribute("id");
+        e.appendChild(doc.createCDATASection("\n" + content + "\n"));
+      } else {
+        e.getParentNode().removeChild(e);
+      }
+    }
+  }
+
+  private void injectXml(Document doc, String id, Element d) {
+    Element e = HtmlDomUtil.find(doc, id);
+    if (e != null) {
+      if (d != null) {
+        while (e.getFirstChild() != null) {
+          e.removeChild(e.getFirstChild());
+        }
+        e.appendChild(doc.importNode(d, true));
+      } else {
+        e.getParentNode().removeChild(e);
+      }
+    }
+  }
+
+  private static class Template {
+    private final FileInfo cssFile;
+    private final FileInfo headerFile;
+    private final FileInfo footerFile;
+
+    String css;
+    Element header;
+    Element footer;
+
+    Template(SitePaths site) {
+      cssFile = new FileInfo(site.site_css);
+      headerFile = new FileInfo(site.site_header);
+      footerFile = new FileInfo(site.site_footer);
+    }
+
+    void load() throws IOException {
+      css = HtmlDomUtil.readFile(cssFile.path.getParent(), cssFile.path.getFileName().toString());
+      header = readXml(headerFile);
+      footer = readXml(footerFile);
+    }
+
+    boolean isStale() {
+      return cssFile.isStale() || headerFile.isStale() || footerFile.isStale();
+    }
+
+    private static Element readXml(FileInfo src) throws IOException {
+      Document d = HtmlDomUtil.parseFile(src.path);
+      return d != null ? d.getDocumentElement() : null;
+    }
+  }
+
+  private static class FileInfo {
+    final Path path;
+    final long time;
+
+    FileInfo(Path p) {
+      path = p;
+      time = lastModified(p);
+    }
+
+    boolean isStale() {
+      return time != lastModified(path);
+    }
+  }
+}