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  1. import java.io.InputStreamReader;
  2. import java.io.LineNumberReader;
  3. import java.net.URL;
  4. import java.text.Normalizer;
  5. import java.util.ArrayList;
  6. import java.util.HashMap;
  7. import java.util.List;
  8. import java.util.Map;
  9.  
  10. public class Main {
  11.     private static final String ZEROES = "000";
  12.     public static String codePointToHexString(int codePoint) {
  13.         assert codePoint >= 0;
  14.         String str = Integer.toString(codePoint, 16).toUpperCase();
  15.         if (str.length() < 4) str = ZEROES.substring(3 - 4 + str.length()) + str;
  16.         return str;
  17.     }
  18.  
  19.     private static class Block {
  20.         public final int startCodePoint;
  21.         public final int endCodePoint;
  22.         public final String description;
  23.  
  24.         public Block(int startCodePoint, int endCodePoint, String description) {
  25.             this.startCodePoint = startCodePoint;
  26.             this.endCodePoint = endCodePoint;
  27.             this.description = description;
  28.         }
  29.  
  30.         @Override
  31.         public String toString() {
  32.             return codePointToHexString(startCodePoint) + ".." + codePointToHexString(endCodePoint) + "; " + description;
  33.         }
  34.     }
  35.  
  36.     public static void main(String[] args) throws Throwable {
  37.         final URL blocksTxtURL = new URL("http://w...content-available-to-author-only...e.org/Public/UCD/latest/ucd/Blocks.txt");
  38.         final LineNumberReader lnr = new LineNumberReader(new InputStreamReader(blocksTxtURL.openStream()));
  39.  
  40.         final List<Block> blocks = new ArrayList<Block>();
  41.  
  42.         String line;
  43.         while ((line = lnr.readLine()) != null) {
  44.             if (line.isEmpty() || line.charAt(0) == '#') continue;
  45.             final int semicolonPos = line.indexOf(';');
  46.             if (semicolonPos < 0) continue;
  47.  
  48.             final int dotdotPos = line.lastIndexOf("..", semicolonPos);
  49.             if (dotdotPos < 0) continue;
  50.  
  51.             final int startCodePoint = Integer.parseInt(line.substring(0, dotdotPos), 16);
  52.             final int endCodePoint = Integer.parseInt(line.substring(dotdotPos + 2, semicolonPos), 16);
  53.             final String description = line.substring(semicolonPos + 1).trim();
  54.             blocks.add(new Block(startCodePoint, endCodePoint, description));
  55.         }
  56.  
  57.         blocks.add(new Block(0, 0xFFFF, "(BMP)"));
  58.  
  59.         for (final Block b : blocks) {
  60.             System.out.println(b);
  61.  
  62.             final Map<Integer, List<String>> m = new HashMap<Integer, List<String>>();
  63.             for (int i = b.startCodePoint; i < b.endCodePoint; ++i) {
  64.                 final String str = new String(new int[] { i }, 0, 1);
  65.                 final String normStr = Normalizer.normalize(str, Normalizer.Form.NFC);
  66.                 final int codePointCount = normStr.codePointCount(0, normStr.length());
  67.                 if (!m.containsKey(codePointCount)) m.put(codePointCount, new ArrayList<String>());
  68.                 m.get(codePointCount).add(str);
  69.             }
  70.  
  71.             for (final Map.Entry<Integer, List<String>> e : m.entrySet()) {
  72.                 System.out.println(e.getKey() + ": " + e.getValue().size());
  73.                 if (e.getKey() > 1) {
  74.                     for (final String str : e.getValue()) {
  75.                         System.out.print(" " + codePointToHexString(str.codePointAt(0)));
  76.                     }
  77.                     System.out.println();
  78.                 }
  79.             }
  80.  
  81.             System.out.println();
  82.         }
  83.     }
  84. }
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https://ideone.com/9PUOCb
language:
Java (12.0.1)
created:
12 years ago
visibility:
public

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