ICU-199 create icu/data/translit/index.txt

X-SVN-Rev: 564

icu4c/data/translit/index.txt

@@ -0,0 +1,46 @@
+//--------------------------------------------------------------------
+//  Copyright (c) 2000, International Business Machines
+//  Corporation and others.  All Rights Reserved.
+//--------------------------------------------------------------------
+//  Date        Name        Description
+//  01/13/2000  aliu        Creation.
+//--------------------------------------------------------------------
+
+index {
+    // Map transliterator names to resource file names.  This
+    // mapping is required because transliterator names typically
+    // exceed the limits of 8.3 file names.
+
+    RuleBasedTransliteratorIDs {
+        // This is an n x 3 array of strings that serves as an index
+        // to the system rule-based transliterator resource bundle
+        // data files.  If RBT files are installed or removed from the
+        // system this table must be updated.  For each of the n rows,
+        // the first item is the ID of the forward transliterator for
+        // the rule.  The second item is the ID of the reverse
+        // transliterator for the rule.  Some rule files only contain
+        // forward direction rules; for those, the second item is a
+        // zero-length string.  The third item is the name of the
+        // resource bundle file, a string of 8 or fewer lowercase
+        // letters or digits.  This file will be sought in the data
+        // directory within the subdirectory "translit".  IDs must
+        // have the form "From-To" or "SingleName" to work properly
+        // with the Transliterator code.
+
+        // Basic language rules
+        { "Fullwidth-Halfwidth", "Halfwidth-Fullwidth", "fullhalf" }
+        { "Latin-Arabic",        "Arabic-Latin",        "larabic"  }
+        { "Latin-Cyrillic",      "Cyrillic-Latin",      "lcyril"   }
+        { "Latin-Devanagari",    "Devanagari-Latin",    "ldevan"   }
+        { "Latin-Greek",         "Greek-Latin",         "lgreek"   }
+        { "Latin-Hebrew",        "Hebrew-Latin",        "lhebrew"  }
+        { "Latin-Jamo",          "Jamo-Latin",          "ljamo"    }
+        { "Latin-Kana",          "Kana-Latin",          "lkana"    }
+
+        // Other miscellaneous rules
+        { "StraightQuotes-CurlyQuotes", "CurlyQuotes-StraightQuotes",
+              "quotes" }
+        { "KeyboardEscape-Latin1", "", "kbdescl1" }
+        { "UnicodeName-UnicodeChar", "", "ucname" }
+    }
+}

icu4c/source/i18n/translit.cpp

@@ -832,7 +832,8 @@ void Transliterator::initializeCache(void) {
     cache = uhash_open(uhash_hashUString, &status);
     cacheIDs.setComparer(compareIDs);
 
-    /* The following code is assuming an n x 3 table
+    /* The following code parses the index table located in
+     * icu/data/translit/index.txt.  The index is an n x 3 table
      * that looks like this:
      *
      * RuleBasedTransliteratorIDs {
@@ -842,9 +843,10 @@ void Transliterator::initializeCache(void) {
      * }
      */
 
-    ResourceBundle bundle(Locale::getDataDirectory(),
-                          Locale::getDefault(),
-                          status);
+    Locale indexLoc(UNICODE_STRING("index", 5));
+    ResourceBundle bundle(Transliterator::getDataDirectory(),
+                          indexLoc, status);
+
     int32_t rows, cols;
     const UnicodeString** ruleBasedIDs =
         bundle.get2dArray(RB_RULE_BASED_IDS, rows, cols, status);