Add word arguments to the info command (A10)

With this, it's now possible to get all the information about a word from
any dictionary.

Bug: 7388857
Change-Id: Ifc9d539f52f87044a1974d95bf35d87465e84c47

tools/dicttool/src/com/android/inputmethod/latin/dicttool/Info.java

@@ -18,9 +18,12 @@ package com.android.inputmethod.latin.dicttool;
 
 import com.android.inputmethod.latin.makedict.FormatSpec;
 import com.android.inputmethod.latin.makedict.FusionDictionary;
+import com.android.inputmethod.latin.makedict.FusionDictionary.CharGroup;
 import com.android.inputmethod.latin.makedict.FusionDictionary.WeightedString;
 import com.android.inputmethod.latin.makedict.Word;
 
+import java.util.ArrayList;
+
 public class Info extends Dicttool.Command {
     public static final String COMMAND = "info";
 
@@ -59,14 +62,55 @@ public class Info extends Dicttool.Command {
                 + " whitelist entries)");
     }
 
+    private static void showWordInfo(final FusionDictionary dict, final String word) {
+        final CharGroup group = dict.findWordInTree(dict.mRoot, word);
+        if (null == group) {
+            System.out.println(word + " is not in the dictionary");
+            return;
+        }
+        System.out.println("Word: " + word);
+        System.out.println("  Freq: " + group.getFrequency());
+        if (group.getIsNotAWord()) {
+            System.out.println("  Is not a word");
+        }
+        if (group.getIsBlacklistEntry()) {
+            System.out.println("  Is a blacklist entry");
+        }
+        final ArrayList<WeightedString> shortcutTargets = group.getShortcutTargets();
+        if (null == shortcutTargets || shortcutTargets.isEmpty()) {
+            System.out.println("  No shortcuts");
+        } else {
+            for (final WeightedString shortcutTarget : shortcutTargets) {
+                System.out.println("  Shortcut target: " + shortcutTarget.mWord + " ("
+                        + (FormatSpec.SHORTCUT_WHITELIST_FREQUENCY == shortcutTarget.mFrequency
+                                ? "whitelist" : shortcutTarget.mFrequency) + ")");
+            }
+        }
+        final ArrayList<WeightedString> bigrams = group.getBigrams();
+        if (null == bigrams || bigrams.isEmpty()) {
+            System.out.println("  No bigrams");
+        } else {
+            for (final WeightedString bigram : bigrams) {
+                System.out.println("  Bigram: " + bigram.mWord + " (" + bigram.mFrequency + ")");
+            }
+        }
+    }
+
     @Override
     public void run() {
         if (mArgs.length < 1) {
             throw new RuntimeException("Not enough arguments for command " + COMMAND);
         }
         final String filename = mArgs[0];
+        final boolean hasWordArguments = (1 == mArgs.length);
         final FusionDictionary dict = BinaryDictOffdeviceUtils.getDictionary(filename,
-                true /* report */);
-        showInfo(dict);
+                hasWordArguments /* report */);
+        if (hasWordArguments) {
+            showInfo(dict);
+        } else {
+            for (int i = 1; i < mArgs.length; ++i) {
+                showWordInfo(dict, mArgs[i]);
+            }
+        }
     }
 }