new keywords class

2026-02-11 09:39:19 +01:00 · 2003-11-09 23:10:56 +00:00
parent 3361c31139
commit e3484f553b
6 changed files with 464 additions and 251 deletions
--- a/processing/app/PdeKeywords.java
+++ b/processing/app/PdeKeywords.java
@@ -0,0 +1,95 @@
+/* -*- mode: jde; c-basic-offset: 2; indent-tabs-mode: nil -*- */
+
+/*
+  PdeKeywords - handles text coloring and links to html reference
+  Part of the Processing project - http://Proce55ing.net
+
+  Copyright (c) 2001-03 
+  Ben Fry, Massachusetts Institute of Technology and 
+  Casey Reas, Interaction Design Institute Ivrea
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License 
+  along with this program; if not, write to the Free Software Foundation, 
+  Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+import java.util.*;
+
+
+public class PdeKeywords extends CTokenMarker {
+
+  // lookup table for the TokenMarker subclass, handles coloring
+  static KeywordMap keywordColoring;
+
+  // lookup table that maps keywords to their html reference pages
+  static Hashtable keywordToReference;
+
+
+  public PdeKeywords() {
+    super(false, getKeywords());
+  }
+
+
+  /**
+   * Handles loading of keywords file. uses getKeywords() method 
+   * because that's part of the TokenMarker classes.
+   */
+  static public KeywordMap getKeywords() {
+    if (keywordColoring == null) {
+      try {
+        keywords = new KeywordMap(false);
+        keywordToReference = new Hashtable();
+
+        InputStream input = PdeBase.getStream("keywords.txt");
+        BufferedReader reader = new BufferedReader(new InputStreamReader(input));
+
+        String line = null;
+        while ((line = reader.readLine()) != null) {
+          int tab = line.indexOf('\t');
+          if (tab == -1) continue;
+
+          String keyword = line.substring(0, tab);
+          String second = line.substring(tab + 1);
+          tab = second.indexOf('\t');
+          String coloring = second.substring(0, tab);
+          String htmlFilename = second.substring(tab + 1);
+
+          if (coloring.length() > 0) {
+            // text will be KEYWORD or LITERAL
+            boolean isKeyword = (coloring.charAt(0) == 'K');
+            // KEYWORD1 -> 0, KEYWORD2 -> 1, etc
+            int num = coloring.charAt(coloring.length() - 1) - '1';
+            int constant = (isKeyword ? KEYWORD : LITERAL) + num;
+            keywordColoring.add(keyword, constant);
+          }
+
+          if (htmlFilename.length() > 0) {
+            keywordToReference.put(keyword, htmlFilename);
+          }
+        }
+      } catch (Exception e) {
+        PdeBase.showError("Problem loading keywords", 
+                          "Could not find keywords.txt,\n" + 
+                          "please re-install Processing.", e);
+        System.exit(1);
+      }
+      reader.close();
+    }
+    return keywordColoring;
+  }
+
+
+  static public String getReference(String keyword) {
+    return (String) keywordToReference.get(keyword);
+  }
+}