Changeset 17571 in josm for trunk/src/org

Timestamp:

2021-03-16T21:56:57+01:00 (4 years ago)

Author:

simon04

Message:

fix #20563 - PluginListParser.parse amounts to 80% of allocations during startup

Location:

trunk/src/org/openstreetmap/josm/plugins

Files:

• PluginHandler.java (modified) (1 diff)
• PluginInformation.java (modified) (8 diffs)
• PluginListParser.java (modified) (6 diffs)

trunk/src/org/openstreetmap/josm/plugins/PluginHandler.java

@@ -185 +185 @@
         public String getText() {
             StringBuilder b = new StringBuilder();
-            for (Entry<String, String> e : info.attr.entrySet()) {
+            for (Entry<Object, Object> e : info.attr.entrySet()) {
                 b.append(e.getKey());
                 b.append(": ");

trunk/src/org/openstreetmap/josm/plugins/PluginInformation.java

@@ -19 +19 @@
 import java.util.Map;
 import java.util.Optional;
-import java.util.TreeMap;
 import java.util.jar.Attributes;
 import java.util.jar.JarInputStream;
@@ -94 +93 @@
     public List<URL> libraries = new LinkedList<>();
     /** All manifest attributes. */
-    public final Map<String, String> attr = new TreeMap<>();
+    public Attributes attr;
     /** Invalid manifest entries */
     final List<String> invalidManifestEntries = new ArrayList<>();
@@ -134 +133 @@
             if (manifest == null)
                 throw new PluginException(tr("The plugin file ''{0}'' does not include a Manifest.", file.toString()));
-            scanManifest(manifest, false);
+            scanManifest(manifest.getMainAttributes(), false);
             libraries.add(0, Utils.fileToURL(file));
         } catch (IOException | InvalidPathException e) {
@@ -151 +150 @@
      */
     public PluginInformation(InputStream manifestStream, String name, String url) throws PluginException {
-        this.name = name;
         try {
             Manifest manifest = new Manifest();
@@ -158 +156 @@
                 downloadlink = url;
             }
-            scanManifest(manifest, url != null);
+            scanManifest(manifest.getMainAttributes(), url != null);
         } catch (IOException e) {
             throw new PluginException(name, e);
         }
+    }
+
+    /**
+     * Creates a plugin information object by reading plugin information in Manifest format
+     * from the input stream {@code manifestStream}.
+     *
+     * @param attr the manifest attributes
+     * @param name the plugin name
+     * @param url the download URL for the plugin
+     * @throws PluginException if the plugin information can't be read from the input stream
+     */
+    public PluginInformation(Attributes attr, String name, String url) throws PluginException {
+        this.name = name;
+        if (url != null) {
+            downloadlink = url;
+        }
+        scanManifest(attr, url != null);
     }
 
@@ -189 +204 @@
         this.canloadatruntime = other.canloadatruntime;
         this.libraries = other.libraries;
-        this.attr.clear();
-        this.attr.putAll(other.attr);
+        this.attr = new Attributes(other.attr);
         this.invalidManifestEntries.clear();
         this.invalidManifestEntries.addAll(other.invalidManifestEntries);
@@ -215 +229 @@
     }
 
-    private void scanManifest(Manifest manifest, boolean oldcheck) {
+    private void scanManifest(Attributes attr, boolean oldcheck) {
         String lang = LanguageInfo.getLanguageCodeManifest();
-        Attributes attr = manifest.getMainAttributes();
         className = attr.getValue("Plugin-Class");
         String s = Optional.ofNullable(attr.getValue(lang+"Plugin-Link")).orElseGet(() -> attr.getValue("Plugin-Link"));
@@ -318 +331 @@
             }
         }
-        for (Object o : attr.keySet()) {
-            this.attr.put(o.toString(), attr.getValue(o.toString()));
-        }
+        this.attr = attr;
     }
 

trunk/src/org/openstreetmap/josm/plugins/PluginListParser.java

@@ -5 +5 @@
 
 import java.io.BufferedReader;
-import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -12 +11 @@
 import java.util.LinkedList;
 import java.util.List;
+import java.util.jar.Attributes;
 
 import org.openstreetmap.josm.tools.Logging;
@@ -30 +30 @@
      * @param name the plugin name
      * @param url the plugin download url
-     * @param manifest the plugin manifest
+     * @param manifest the plugin manifest attributes
      * @return a plugin information object
      * @throws PluginListParseException if plugin manifest cannot be parsed
      */
-    public static PluginInformation createInfo(String name, String url, String manifest) throws PluginListParseException {
+    public static PluginInformation createInfo(String name, String url, Attributes manifest) throws PluginListParseException {
         try {
             return new PluginInformation(
-                    new ByteArrayInputStream(manifest.getBytes(StandardCharsets.UTF_8)),
+                    manifest,
                     name.substring(0, name.length() - 4),
                     url
@@ -62 +62 @@
             String name = null;
             String url = null;
-            StringBuilder manifest = new StringBuilder();
+            Attributes manifest = new Attributes();
             for (String line = r.readLine(); line != null; line = r.readLine()) {
                 if (line.startsWith("\t")) {
-                    line = line.substring(1);
-                    /* NOTE: Although manifest specification says line should not be longer than 72 bytes it
-                       supports more than 500 bytes and thus even the longest possible 72 character UTF-8, so
-                       this code correctly splits the text at 70 characters, not bytes. */
-                    while (line.length() > 70) {
-                        manifest.append(line.substring(0, 70)).append('\n');
-                        line = ' ' + line.substring(70);
-                    }
-                    manifest.append(line).append('\n');
+                    final String[] keyValue = line.split("\\s*:\\s*", 2);
+                    manifest.put(new Attributes.Name(keyValue[0].substring(1)), keyValue[1]);
                     continue;
                 }
-                addPluginInformation(ret, name, url, manifest.toString());
+                addPluginInformation(ret, name, url, manifest);
                 String[] x = line.split(";", -1);
                 if (x.length != 2)
@@ -82 +75 @@
                 name = x[0];
                 url = x[1];
-                manifest = new StringBuilder();
+                manifest = new Attributes();
             }
-            addPluginInformation(ret, name, url, manifest.toString());
+            addPluginInformation(ret, name, url, manifest);
             return ret;
         } catch (IOException e) {
@@ -91 +84 @@
     }
 
-    private static void addPluginInformation(List<PluginInformation> ret, String name, String url, String manifest) {
+    private static void addPluginInformation(List<PluginInformation> ret, String name, String url, Attributes manifest) {
         try {
             if (name != null) {