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1 /*
2  * Copyright (C) 2006 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.internal.telephony;
18 
19 import android.content.res.Resources;
20 import android.text.TextUtils;
21 import android.util.SparseIntArray;
22 
23 import android.telephony.Rlog;
24 
25 import java.nio.ByteBuffer;
26 import java.nio.charset.Charset;
27 import com.android.internal.telephony.SmsConstants;
28 import com.android.internal.R;
29 
30 import java.util.ArrayList;
31 import java.util.List;
32 
33 /**
34  * This class implements the character set mapping between
35  * the GSM SMS 7-bit alphabet specified in TS 23.038 6.2.1
36  * and UTF-16
37  *
38  * {@hide}
39  */
40 public class GsmAlphabet {
41     private static final String TAG = "GSM";
42 
GsmAlphabet()43     private GsmAlphabet() { }
44 
45     /**
46      * This escapes extended characters, and when present indicates that the
47      * following character should be looked up in the "extended" table.
48      *
49      * gsmToChar(GSM_EXTENDED_ESCAPE) returns 0xffff
50      */
51     public static final byte GSM_EXTENDED_ESCAPE = 0x1B;
52 
53     /**
54      * User data header requires one octet for length. Count as one septet, because
55      * all combinations of header elements below will have at least one free bit
56      * when padding to the nearest septet boundary.
57      */
58     public static final int UDH_SEPTET_COST_LENGTH = 1;
59 
60     /**
61      * Using a non-default language locking shift table OR single shift table
62      * requires a user data header of 3 octets, or 4 septets, plus UDH length.
63      */
64     public static final int UDH_SEPTET_COST_ONE_SHIFT_TABLE = 4;
65 
66     /**
67      * Using a non-default language locking shift table AND single shift table
68      * requires a user data header of 6 octets, or 7 septets, plus UDH length.
69      */
70     public static final int UDH_SEPTET_COST_TWO_SHIFT_TABLES = 7;
71 
72     /**
73      * Multi-part messages require a user data header of 5 octets, or 6 septets,
74      * plus UDH length.
75      */
76     public static final int UDH_SEPTET_COST_CONCATENATED_MESSAGE = 6;
77 
78     /**
79      * For a specific text string, this object describes protocol
80      * properties of encoding it for transmission as message user
81      * data.
82      */
83     public static class TextEncodingDetails {
84         /**
85          *The number of SMS's required to encode the text.
86          */
87         public int msgCount;
88 
89         /**
90          * The number of code units consumed so far, where code units
91          * are basically characters in the encoding -- for example,
92          * septets for the standard ASCII and GSM encodings, and 16
93          * bits for Unicode.
94          */
95         public int codeUnitCount;
96 
97         /**
98          * How many code units are still available without spilling
99          * into an additional message.
100          */
101         public int codeUnitsRemaining;
102 
103         /**
104          * The encoding code unit size (specified using
105          * android.telephony.SmsMessage ENCODING_*).
106          */
107         public int codeUnitSize;
108 
109         /**
110          * The GSM national language table to use, or 0 for the default 7-bit alphabet.
111          */
112         public int languageTable;
113 
114         /**
115          * The GSM national language shift table to use, or 0 for the default 7-bit extension table.
116          */
117         public int languageShiftTable;
118 
119         @Override
toString()120         public String toString() {
121             return "TextEncodingDetails " +
122                     "{ msgCount=" + msgCount +
123                     ", codeUnitCount=" + codeUnitCount +
124                     ", codeUnitsRemaining=" + codeUnitsRemaining +
125                     ", codeUnitSize=" + codeUnitSize +
126                     ", languageTable=" + languageTable +
127                     ", languageShiftTable=" + languageShiftTable +
128                     " }";
129         }
130     }
131 
132     /**
133      * Converts a char to a GSM 7 bit table index.
134      * Returns ' ' in GSM alphabet if there's no possible match. Returns
135      * GSM_EXTENDED_ESCAPE if this character is in the extended table.
136      * In this case, you must call charToGsmExtended() for the value
137      * that should follow GSM_EXTENDED_ESCAPE in the GSM alphabet string.
138      * @param c the character to convert
139      * @return the GSM 7 bit table index for the specified character
140      */
141     public static int
charToGsm(char c)142     charToGsm(char c) {
143         try {
144             return charToGsm(c, false);
145         } catch (EncodeException ex) {
146             // this should never happen
147             return sCharsToGsmTables[0].get(' ', ' ');
148         }
149     }
150 
151     /**
152      * Converts a char to a GSM 7 bit table index.
153      * Returns GSM_EXTENDED_ESCAPE if this character is in the extended table.
154      * In this case, you must call charToGsmExtended() for the value that
155      * should follow GSM_EXTENDED_ESCAPE in the GSM alphabet string.
156      *
157      * @param c the character to convert
158      * @param throwException If true, throws EncodeException on invalid char.
159      *   If false, returns GSM alphabet ' ' char.
160      * @throws EncodeException encode error when throwException is true
161      * @return the GSM 7 bit table index for the specified character
162      */
163     public static int
charToGsm(char c, boolean throwException)164     charToGsm(char c, boolean throwException) throws EncodeException {
165         int ret;
166 
167         ret = sCharsToGsmTables[0].get(c, -1);
168 
169         if (ret == -1) {
170             ret = sCharsToShiftTables[0].get(c, -1);
171 
172             if (ret == -1) {
173                 if (throwException) {
174                     throw new EncodeException(c);
175                 } else {
176                     return sCharsToGsmTables[0].get(' ', ' ');
177                 }
178             } else {
179                 return GSM_EXTENDED_ESCAPE;
180             }
181         }
182 
183         return ret;
184     }
185 
186     /**
187      * Converts a char to an extended GSM 7 bit table index.
188      * Extended chars should be escaped with GSM_EXTENDED_ESCAPE.
189      * Returns ' ' in GSM alphabet if there's no possible match.
190      * @param c the character to convert
191      * @return the GSM 7 bit extended table index for the specified character
192      */
193     public static int
charToGsmExtended(char c)194     charToGsmExtended(char c) {
195         int ret;
196 
197         ret = sCharsToShiftTables[0].get(c, -1);
198 
199         if (ret == -1) {
200             return sCharsToGsmTables[0].get(' ', ' ');
201         }
202 
203         return ret;
204     }
205 
206     /**
207      * Converts a character in the GSM alphabet into a char.
208      *
209      * If GSM_EXTENDED_ESCAPE is passed, 0xffff is returned. In this case,
210      * the following character in the stream should be decoded with
211      * gsmExtendedToChar().
212      *
213      * If an unmappable value is passed (one greater than 127), ' ' is returned.
214      *
215      * @param gsmChar the GSM 7 bit table index to convert
216      * @return the decoded character
217      */
218     public static char
gsmToChar(int gsmChar)219     gsmToChar(int gsmChar) {
220         if (gsmChar >= 0 && gsmChar < 128) {
221             return sLanguageTables[0].charAt(gsmChar);
222         } else {
223             return ' ';
224         }
225     }
226 
227     /**
228      * Converts a character in the extended GSM alphabet into a char
229      *
230      * if GSM_EXTENDED_ESCAPE is passed, ' ' is returned since no second
231      * extension page has yet been defined (see Note 1 in table 6.2.1.1 of
232      * TS 23.038 v7.00)
233      *
234      * If an unmappable value is passed, the character from the GSM 7 bit
235      * default table will be used (table 6.2.1.1 of TS 23.038).
236      *
237      * @param gsmChar the GSM 7 bit extended table index to convert
238      * @return the decoded character
239      */
240     public static char
gsmExtendedToChar(int gsmChar)241     gsmExtendedToChar(int gsmChar) {
242         if (gsmChar == GSM_EXTENDED_ESCAPE) {
243             return ' ';
244         } else if (gsmChar >= 0 && gsmChar < 128) {
245             char c = sLanguageShiftTables[0].charAt(gsmChar);
246             if (c == ' ') {
247                 return sLanguageTables[0].charAt(gsmChar);
248             } else {
249                 return c;
250             }
251         } else {
252             return ' ';     // out of range
253         }
254     }
255 
256     /**
257      * Converts a String into a byte array containing the 7-bit packed
258      * GSM Alphabet representation of the string. If a header is provided,
259      * this is included in the returned byte array and padded to a septet
260      * boundary. This method is used by OEM code.
261      *
262      * @param data The text string to encode.
263      * @param header Optional header (including length byte) that precedes
264      * the encoded data, padded to septet boundary.
265      * @return Byte array containing header and encoded data.
266      * @throws EncodeException if String is too large to encode
267      * @see #stringToGsm7BitPackedWithHeader(String, byte[], int, int)
268      */
stringToGsm7BitPackedWithHeader(String data, byte[] header)269     public static byte[] stringToGsm7BitPackedWithHeader(String data, byte[] header)
270             throws EncodeException {
271         return stringToGsm7BitPackedWithHeader(data, header, 0, 0);
272     }
273 
274     /**
275      * Converts a String into a byte array containing the 7-bit packed
276      * GSM Alphabet representation of the string. If a header is provided,
277      * this is included in the returned byte array and padded to a septet
278      * boundary.
279      *
280      * Unencodable chars are encoded as spaces
281      *
282      * Byte 0 in the returned byte array is the count of septets used,
283      * including the header and header padding. The returned byte array is
284      * the minimum size required to store the packed septets. The returned
285      * array cannot contain more than 255 septets.
286      *
287      * @param data The text string to encode.
288      * @param header Optional header (including length byte) that precedes
289      * the encoded data, padded to septet boundary.
290      * @param languageTable the 7 bit language table, or 0 for the default GSM alphabet
291      * @param languageShiftTable the 7 bit single shift language table, or 0 for the default
292      *     GSM extension table
293      * @return Byte array containing header and encoded data.
294      * @throws EncodeException if String is too large to encode
295      */
stringToGsm7BitPackedWithHeader(String data, byte[] header, int languageTable, int languageShiftTable)296     public static byte[] stringToGsm7BitPackedWithHeader(String data, byte[] header,
297             int languageTable, int languageShiftTable)
298             throws EncodeException {
299         if (header == null || header.length == 0) {
300             return stringToGsm7BitPacked(data, languageTable, languageShiftTable);
301         }
302 
303         int headerBits = (header.length + 1) * 8;
304         int headerSeptets = (headerBits + 6) / 7;
305 
306         byte[] ret = stringToGsm7BitPacked(data, headerSeptets, true, languageTable,
307                 languageShiftTable);
308 
309         // Paste in the header
310         ret[1] = (byte)header.length;
311         System.arraycopy(header, 0, ret, 2, header.length);
312         return ret;
313     }
314 
315     /**
316      * Converts a String into a byte array containing
317      * the 7-bit packed GSM Alphabet representation of the string.
318      *
319      * Unencodable chars are encoded as spaces
320      *
321      * Byte 0 in the returned byte array is the count of septets used
322      * The returned byte array is the minimum size required to store
323      * the packed septets. The returned array cannot contain more than 255
324      * septets.
325      *
326      * @param data the data string to encode
327      * @return the encoded string
328      * @throws EncodeException if String is too large to encode
329      */
stringToGsm7BitPacked(String data)330     public static byte[] stringToGsm7BitPacked(String data)
331             throws EncodeException {
332         return stringToGsm7BitPacked(data, 0, true, 0, 0);
333     }
334 
335     /**
336      * Converts a String into a byte array containing
337      * the 7-bit packed GSM Alphabet representation of the string.
338      *
339      * Unencodable chars are encoded as spaces
340      *
341      * Byte 0 in the returned byte array is the count of septets used
342      * The returned byte array is the minimum size required to store
343      * the packed septets. The returned array cannot contain more than 255
344      * septets.
345      *
346      * @param data the data string to encode
347      * @param languageTable the 7 bit language table, or 0 for the default GSM alphabet
348      * @param languageShiftTable the 7 bit single shift language table, or 0 for the default
349      *     GSM extension table
350      * @return the encoded string
351      * @throws EncodeException if String is too large to encode
352      */
stringToGsm7BitPacked(String data, int languageTable, int languageShiftTable)353     public static byte[] stringToGsm7BitPacked(String data, int languageTable,
354             int languageShiftTable)
355             throws EncodeException {
356         return stringToGsm7BitPacked(data, 0, true, languageTable, languageShiftTable);
357     }
358 
359     /**
360      * Converts a String into a byte array containing
361      * the 7-bit packed GSM Alphabet representation of the string.
362      *
363      * Byte 0 in the returned byte array is the count of septets used
364      * The returned byte array is the minimum size required to store
365      * the packed septets. The returned array cannot contain more than 255
366      * septets.
367      *
368      * @param data the text to convert to septets
369      * @param startingSeptetOffset the number of padding septets to put before
370      *  the character data at the beginning of the array
371      * @param throwException If true, throws EncodeException on invalid char.
372      *   If false, replaces unencodable char with GSM alphabet space char.
373      * @param languageTable the 7 bit language table, or 0 for the default GSM alphabet
374      * @param languageShiftTable the 7 bit single shift language table, or 0 for the default
375      *     GSM extension table
376      * @return the encoded message
377      *
378      * @throws EncodeException if String is too large to encode
379      */
stringToGsm7BitPacked(String data, int startingSeptetOffset, boolean throwException, int languageTable, int languageShiftTable)380     public static byte[] stringToGsm7BitPacked(String data, int startingSeptetOffset,
381             boolean throwException, int languageTable, int languageShiftTable)
382             throws EncodeException {
383         int dataLen = data.length();
384         int septetCount = countGsmSeptetsUsingTables(data, !throwException,
385                 languageTable, languageShiftTable);
386         if (septetCount == -1) {
387             throw new EncodeException("countGsmSeptetsUsingTables(): unencodable char");
388         }
389         septetCount += startingSeptetOffset;
390         if (septetCount > 255) {
391             throw new EncodeException("Payload cannot exceed 255 septets");
392         }
393         int byteCount = ((septetCount * 7) + 7) / 8;
394         byte[] ret = new byte[byteCount + 1];  // Include space for one byte length prefix.
395         SparseIntArray charToLanguageTable = sCharsToGsmTables[languageTable];
396         SparseIntArray charToShiftTable = sCharsToShiftTables[languageShiftTable];
397         for (int i = 0, septets = startingSeptetOffset, bitOffset = startingSeptetOffset * 7;
398                  i < dataLen && septets < septetCount;
399                  i++, bitOffset += 7) {
400             char c = data.charAt(i);
401             int v = charToLanguageTable.get(c, -1);
402             if (v == -1) {
403                 v = charToShiftTable.get(c, -1);  // Lookup the extended char.
404                 if (v == -1) {
405                     if (throwException) {
406                         throw new EncodeException("stringToGsm7BitPacked(): unencodable char");
407                     } else {
408                         v = charToLanguageTable.get(' ', ' ');   // should return ASCII space
409                     }
410                 } else {
411                     packSmsChar(ret, bitOffset, GSM_EXTENDED_ESCAPE);
412                     bitOffset += 7;
413                     septets++;
414                 }
415             }
416             packSmsChar(ret, bitOffset, v);
417             septets++;
418         }
419         ret[0] = (byte) (septetCount);  // Validated by check above.
420         return ret;
421     }
422 
423     /**
424      * Pack a 7-bit char into its appropriate place in a byte array
425      *
426      * @param packedChars the destination byte array
427      * @param bitOffset the bit offset that the septet should be packed at
428      *                  (septet index * 7)
429      * @param value the 7-bit character to store
430      */
431     private static void
packSmsChar(byte[] packedChars, int bitOffset, int value)432     packSmsChar(byte[] packedChars, int bitOffset, int value) {
433         int byteOffset = bitOffset / 8;
434         int shift = bitOffset % 8;
435 
436         packedChars[++byteOffset] |= value << shift;
437 
438         if (shift > 1) {
439             packedChars[++byteOffset] = (byte)(value >> (8 - shift));
440         }
441     }
442 
443     /**
444      * Convert a GSM alphabet 7 bit packed string (SMS string) into a
445      * {@link java.lang.String}.
446      *
447      * See TS 23.038 6.1.2.1 for SMS Character Packing
448      *
449      * @param pdu the raw data from the pdu
450      * @param offset the byte offset of
451      * @param lengthSeptets string length in septets, not bytes
452      * @return String representation or null on decoding exception
453      */
gsm7BitPackedToString(byte[] pdu, int offset, int lengthSeptets)454     public static String gsm7BitPackedToString(byte[] pdu, int offset,
455             int lengthSeptets) {
456         return gsm7BitPackedToString(pdu, offset, lengthSeptets, 0, 0, 0);
457     }
458 
459     /**
460      * Convert a GSM alphabet 7 bit packed string (SMS string) into a
461      * {@link java.lang.String}.
462      *
463      * See TS 23.038 6.1.2.1 for SMS Character Packing
464      *
465      * @param pdu the raw data from the pdu
466      * @param offset the byte offset of
467      * @param lengthSeptets string length in septets, not bytes
468      * @param numPaddingBits the number of padding bits before the start of the
469      *  string in the first byte
470      * @param languageTable the 7 bit language table, or 0 for the default GSM alphabet
471      * @param shiftTable the 7 bit single shift language table, or 0 for the default
472      *     GSM extension table
473      * @return String representation or null on decoding exception
474      */
gsm7BitPackedToString(byte[] pdu, int offset, int lengthSeptets, int numPaddingBits, int languageTable, int shiftTable)475     public static String gsm7BitPackedToString(byte[] pdu, int offset,
476             int lengthSeptets, int numPaddingBits, int languageTable, int shiftTable) {
477         StringBuilder ret = new StringBuilder(lengthSeptets);
478 
479         if (languageTable < 0 || languageTable > sLanguageTables.length) {
480             Rlog.w(TAG, "unknown language table " + languageTable + ", using default");
481             languageTable = 0;
482         }
483         if (shiftTable < 0 || shiftTable > sLanguageShiftTables.length) {
484             Rlog.w(TAG, "unknown single shift table " + shiftTable + ", using default");
485             shiftTable = 0;
486         }
487 
488         try {
489             boolean prevCharWasEscape = false;
490             String languageTableToChar = sLanguageTables[languageTable];
491             String shiftTableToChar = sLanguageShiftTables[shiftTable];
492 
493             if (languageTableToChar.isEmpty()) {
494                 Rlog.w(TAG, "no language table for code " + languageTable + ", using default");
495                 languageTableToChar = sLanguageTables[0];
496             }
497             if (shiftTableToChar.isEmpty()) {
498                 Rlog.w(TAG, "no single shift table for code " + shiftTable + ", using default");
499                 shiftTableToChar = sLanguageShiftTables[0];
500             }
501 
502             for (int i = 0 ; i < lengthSeptets ; i++) {
503                 int bitOffset = (7 * i) + numPaddingBits;
504 
505                 int byteOffset = bitOffset / 8;
506                 int shift = bitOffset % 8;
507                 int gsmVal;
508 
509                 gsmVal = (0x7f & (pdu[offset + byteOffset] >> shift));
510 
511                 // if it crosses a byte boundary
512                 if (shift > 1) {
513                     // set msb bits to 0
514                     gsmVal &= 0x7f >> (shift - 1);
515 
516                     gsmVal |= 0x7f & (pdu[offset + byteOffset + 1] << (8 - shift));
517                 }
518 
519                 if (prevCharWasEscape) {
520                     if (gsmVal == GSM_EXTENDED_ESCAPE) {
521                         ret.append(' ');    // display ' ' for reserved double escape sequence
522                     } else {
523                         char c = shiftTableToChar.charAt(gsmVal);
524                         if (c == ' ') {
525                             ret.append(languageTableToChar.charAt(gsmVal));
526                         } else {
527                             ret.append(c);
528                         }
529                     }
530                     prevCharWasEscape = false;
531                 } else if (gsmVal == GSM_EXTENDED_ESCAPE) {
532                     prevCharWasEscape = true;
533                 } else {
534                     ret.append(languageTableToChar.charAt(gsmVal));
535                 }
536             }
537         } catch (RuntimeException ex) {
538             Rlog.e(TAG, "Error GSM 7 bit packed: ", ex);
539             return null;
540         }
541 
542         return ret.toString();
543     }
544 
545 
546     /**
547      * Convert a GSM alphabet string that's stored in 8-bit unpacked
548      * format (as it often appears in SIM records) into a String
549      *
550      * Field may be padded with trailing 0xff's. The decode stops
551      * at the first 0xff encountered.
552      *
553      * @param data the byte array to decode
554      * @param offset array offset for the first character to decode
555      * @param length the number of bytes to decode
556      * @return the decoded string
557      */
558     public static String
gsm8BitUnpackedToString(byte[] data, int offset, int length)559     gsm8BitUnpackedToString(byte[] data, int offset, int length) {
560         return gsm8BitUnpackedToString(data, offset, length, "");
561     }
562 
563     /**
564      * Convert a GSM alphabet string that's stored in 8-bit unpacked
565      * format (as it often appears in SIM records) into a String
566      *
567      * Field may be padded with trailing 0xff's. The decode stops
568      * at the first 0xff encountered.
569      *
570      * Additionally, in some country(ex. Korea), there are non-ASCII or MBCS characters.
571      * If a character set is given, characters in data are treat as MBCS.
572      */
573     public static String
gsm8BitUnpackedToString(byte[] data, int offset, int length, String characterset)574     gsm8BitUnpackedToString(byte[] data, int offset, int length, String characterset) {
575         boolean isMbcs = false;
576         Charset charset = null;
577         ByteBuffer mbcsBuffer = null;
578 
579         if (!TextUtils.isEmpty(characterset)
580                 && !characterset.equalsIgnoreCase("us-ascii")
581                 && Charset.isSupported(characterset)) {
582             isMbcs = true;
583             charset = Charset.forName(characterset);
584             mbcsBuffer = ByteBuffer.allocate(2);
585         }
586 
587         // Always use GSM 7 bit default alphabet table for this method
588         String languageTableToChar = sLanguageTables[0];
589         String shiftTableToChar = sLanguageShiftTables[0];
590 
591         StringBuilder ret = new StringBuilder(length);
592         boolean prevWasEscape = false;
593         for (int i = offset ; i < offset + length ; i++) {
594             // Never underestimate the pain that can be caused
595             // by signed bytes
596             int c = data[i] & 0xff;
597 
598             if (c == 0xff) {
599                 break;
600             } else if (c == GSM_EXTENDED_ESCAPE) {
601                 if (prevWasEscape) {
602                     // Two escape chars in a row
603                     // We treat this as a space
604                     // See Note 1 in table 6.2.1.1 of TS 23.038 v7.00
605                     ret.append(' ');
606                     prevWasEscape = false;
607                 } else {
608                     prevWasEscape = true;
609                 }
610             } else {
611                 if (prevWasEscape) {
612                     char shiftChar =
613                             c < shiftTableToChar.length() ? shiftTableToChar.charAt(c) : ' ';
614                     if (shiftChar == ' ') {
615                         // display character from main table if not present in shift table
616                         if (c < languageTableToChar.length()) {
617                             ret.append(languageTableToChar.charAt(c));
618                         } else {
619                             ret.append(' ');
620                         }
621                     } else {
622                         ret.append(shiftChar);
623                     }
624                 } else {
625                     if (!isMbcs || c < 0x80 || i + 1 >= offset + length) {
626                         if (c < languageTableToChar.length()) {
627                             ret.append(languageTableToChar.charAt(c));
628                         } else {
629                             ret.append(' ');
630                         }
631                     } else {
632                         // isMbcs must be true. So both mbcsBuffer and charset are initialized.
633                         mbcsBuffer.clear();
634                         mbcsBuffer.put(data, i++, 2);
635                         mbcsBuffer.flip();
636                         ret.append(charset.decode(mbcsBuffer).toString());
637                     }
638                 }
639                 prevWasEscape = false;
640             }
641         }
642 
643         return ret.toString();
644     }
645 
646     /**
647      * Convert a string into an 8-bit unpacked GSM alphabet byte array.
648      * Always uses GSM default 7-bit alphabet and extension table.
649      * @param s the string to encode
650      * @return the 8-bit GSM encoded byte array for the string
651      */
652     public static byte[]
653     stringToGsm8BitPacked(String s) {
654         byte[] ret;
655 
656         int septets = countGsmSeptetsUsingTables(s, true, 0, 0);
657 
658         // Enough for all the septets and the length byte prefix
659         ret = new byte[septets];
660 
661         stringToGsm8BitUnpackedField(s, ret, 0, ret.length);
662 
663         return ret;
664     }
665 
666 
667     /**
668      * Write a String into a GSM 8-bit unpacked field of
669      * Field is padded with 0xff's, string is truncated if necessary
670      *
671      * @param s the string to encode
672      * @param dest the destination byte array
673      * @param offset the starting offset for the encoded string
674      * @param length the maximum number of bytes to write
675      */
676     public static void
677     stringToGsm8BitUnpackedField(String s, byte dest[], int offset, int length) {
678         int outByteIndex = offset;
679         SparseIntArray charToLanguageTable = sCharsToGsmTables[0];
680         SparseIntArray charToShiftTable = sCharsToShiftTables[0];
681 
682         // Septets are stored in byte-aligned octets
683         for (int i = 0, sz = s.length()
684                 ; i < sz && (outByteIndex - offset) < length
685                 ; i++
686         ) {
687             char c = s.charAt(i);
688 
689             int v = charToLanguageTable.get(c, -1);
690 
691             if (v == -1) {
692                 v = charToShiftTable.get(c, -1);
693                 if (v == -1) {
694                     v = charToLanguageTable.get(' ', ' ');  // fall back to ASCII space
695                 } else {
696                     // make sure we can fit an escaped char
697                     if (! (outByteIndex + 1 - offset < length)) {
698                         break;
699                     }
700 
701                     dest[outByteIndex++] = GSM_EXTENDED_ESCAPE;
702                 }
703             }
704 
705             dest[outByteIndex++] = (byte)v;
706         }
707 
708         // pad with 0xff's
709         while((outByteIndex - offset) < length) {
710             dest[outByteIndex++] = (byte)0xff;
711         }
712     }
713 
714     /**
715      * Returns the count of 7-bit GSM alphabet characters
716      * needed to represent this character. Counts unencodable char as 1 septet.
717      * @param c the character to examine
718      * @return the number of septets for this character
719      */
720     public static int
721     countGsmSeptets(char c) {
722         try {
723             return countGsmSeptets(c, false);
724         } catch (EncodeException ex) {
725             // This should never happen.
726             return 0;
727         }
728     }
729 
730     /**
731      * Returns the count of 7-bit GSM alphabet characters
732      * needed to represent this character using the default 7 bit GSM alphabet.
733      * @param c the character to examine
734      * @param throwsException If true, throws EncodeException if unencodable
735      * char. Otherwise, counts invalid char as 1 septet.
736      * @return the number of septets for this character
737      * @throws EncodeException the character can't be encoded and throwsException is true
738      */
739     public static int
740     countGsmSeptets(char c, boolean throwsException) throws EncodeException {
741         if (sCharsToGsmTables[0].get(c, -1) != -1) {
742             return 1;
743         }
744 
745         if (sCharsToShiftTables[0].get(c, -1) != -1) {
746             return 2;
747         }
748 
749         if (throwsException) {
750             throw new EncodeException(c);
751         } else {
752             // count as a space char
753             return 1;
754         }
755     }
756 
757     public static boolean isGsmSeptets(char c) {
758         if (sCharsToGsmTables[0].get(c, -1) != -1) {
759             return true;
760         }
761 
762         if (sCharsToShiftTables[0].get(c, -1) != -1) {
763             return true;
764         }
765 
766         return false;
767     }
768 
769     /**
770      * Returns the count of 7-bit GSM alphabet characters needed
771      * to represent this string, using the specified 7-bit language table
772      * and extension table (0 for GSM default tables).
773      * @param s the Unicode string that will be encoded
774      * @param use7bitOnly allow using space in place of unencodable character if true,
775      *     otherwise, return -1 if any characters are unencodable
776      * @param languageTable the 7 bit language table, or 0 for the default GSM alphabet
777      * @param languageShiftTable the 7 bit single shift language table, or 0 for the default
778      *     GSM extension table
779      * @return the septet count for s using the specified language tables, or -1 if any
780      *     characters are unencodable and use7bitOnly is false
781      */
782     public static int countGsmSeptetsUsingTables(CharSequence s, boolean use7bitOnly,
783             int languageTable, int languageShiftTable) {
784         int count = 0;
785         int sz = s.length();
786         SparseIntArray charToLanguageTable = sCharsToGsmTables[languageTable];
787         SparseIntArray charToShiftTable = sCharsToShiftTables[languageShiftTable];
788         for (int i = 0; i < sz; i++) {
789             char c = s.charAt(i);
790             if (c == GSM_EXTENDED_ESCAPE) {
791                 Rlog.w(TAG, "countGsmSeptets() string contains Escape character, skipping.");
792                 continue;
793             }
794             if (charToLanguageTable.get(c, -1) != -1) {
795                 count++;
796             } else if (charToShiftTable.get(c, -1) != -1) {
797                 count += 2; // escape + shift table index
798             } else if (use7bitOnly) {
799                 count++;    // encode as space
800             } else {
801                 return -1;  // caller must check for this case
802             }
803         }
804         return count;
805     }
806 
807     /**
808      * Returns the count of 7-bit GSM alphabet characters
809      * needed to represent this string, and the language table and
810      * language shift table used to achieve this result.
811      * For multi-part text messages, each message part may use its
812      * own language table encoding as specified in the message header
813      * for that message. However, this method will only return the
814      * optimal encoding for the message as a whole. When the individual
815      * pieces are encoded, a more optimal encoding may be chosen for each
816      * piece of the message, but the message will be split into pieces
817      * based on the encoding chosen for the message as a whole.
818      * @param s the Unicode string that will be encoded
819      * @param use7bitOnly allow using space in place of unencodable character if true,
820      *     using the language table pair with the fewest unencodable characters
821      * @return a TextEncodingDetails object containing the message and
822      *     character counts for the most efficient 7-bit encoding,
823      *     or null if there are no suitable language tables to encode the string.
824      */
825     public static TextEncodingDetails
826     countGsmSeptets(CharSequence s, boolean use7bitOnly) {
827         // Load enabled language tables from config.xml, including any MCC overlays
828         if (!sDisableCountryEncodingCheck) {
829             enableCountrySpecificEncodings();
830         }
831         // fast path for common case where no national language shift tables are enabled
832         if (sEnabledSingleShiftTables.length + sEnabledLockingShiftTables.length == 0) {
833             TextEncodingDetails ted = new TextEncodingDetails();
834             int septets = GsmAlphabet.countGsmSeptetsUsingTables(s, use7bitOnly, 0, 0);
835             if (septets == -1) {
836                 return null;
837             }
838             ted.codeUnitSize = SmsConstants.ENCODING_7BIT;
839             ted.codeUnitCount = septets;
840             if (septets > SmsConstants.MAX_USER_DATA_SEPTETS) {
841                 ted.msgCount = (septets + (SmsConstants.MAX_USER_DATA_SEPTETS_WITH_HEADER - 1)) /
842                         SmsConstants.MAX_USER_DATA_SEPTETS_WITH_HEADER;
843                 ted.codeUnitsRemaining = (ted.msgCount *
844                         SmsConstants.MAX_USER_DATA_SEPTETS_WITH_HEADER) - septets;
845             } else {
846                 ted.msgCount = 1;
847                 ted.codeUnitsRemaining = SmsConstants.MAX_USER_DATA_SEPTETS - septets;
848             }
849             ted.codeUnitSize = SmsConstants.ENCODING_7BIT;
850             return ted;
851         }
852 
853         int maxSingleShiftCode = sHighestEnabledSingleShiftCode;
854         List<LanguagePairCount> lpcList = new ArrayList<LanguagePairCount>(
855                 sEnabledLockingShiftTables.length + 1);
856 
857         // Always add default GSM 7-bit alphabet table
858         lpcList.add(new LanguagePairCount(0));
859         for (int i : sEnabledLockingShiftTables) {
860             // Avoid adding default table twice in case 0 is in the list of allowed tables
861             if (i != 0 && !sLanguageTables[i].isEmpty()) {
862                 lpcList.add(new LanguagePairCount(i));
863             }
864         }
865 
866         int sz = s.length();
867         // calculate septet count for each valid table / shift table pair
868         for (int i = 0; i < sz && !lpcList.isEmpty(); i++) {
869             char c = s.charAt(i);
870             if (c == GSM_EXTENDED_ESCAPE) {
871                 Rlog.w(TAG, "countGsmSeptets() string contains Escape character, ignoring!");
872                 continue;
873             }
874             // iterate through enabled locking shift tables
875             for (LanguagePairCount lpc : lpcList) {
876                 int tableIndex = sCharsToGsmTables[lpc.languageCode].get(c, -1);
877                 if (tableIndex == -1) {
878                     // iterate through single shift tables for this locking table
879                     for (int table = 0; table <= maxSingleShiftCode; table++) {
880                         if (lpc.septetCounts[table] != -1) {
881                             int shiftTableIndex = sCharsToShiftTables[table].get(c, -1);
882                             if (shiftTableIndex == -1) {
883                                 if (use7bitOnly) {
884                                     // can't encode char, use space instead
885                                     lpc.septetCounts[table]++;
886                                     lpc.unencodableCounts[table]++;
887                                 } else {
888                                     // can't encode char, remove language pair from list
889                                     lpc.septetCounts[table] = -1;
890                                 }
891                             } else {
892                                 // encode as Escape + index into shift table
893                                 lpc.septetCounts[table] += 2;
894                             }
895                         }
896                     }
897                 } else {
898                     // encode as index into locking shift table for all pairs
899                     for (int table = 0; table <= maxSingleShiftCode; table++) {
900                         if (lpc.septetCounts[table] != -1) {
901                             lpc.septetCounts[table]++;
902                         }
903                     }
904                 }
905             }
906         }
907 
908         // find the least cost encoding (lowest message count and most code units remaining)
909         TextEncodingDetails ted = new TextEncodingDetails();
910         ted.msgCount = Integer.MAX_VALUE;
911         ted.codeUnitSize = SmsConstants.ENCODING_7BIT;
912         int minUnencodableCount = Integer.MAX_VALUE;
913         for (LanguagePairCount lpc : lpcList) {
914             for (int shiftTable = 0; shiftTable <= maxSingleShiftCode; shiftTable++) {
915                 int septets = lpc.septetCounts[shiftTable];
916                 if (septets == -1) {
917                     continue;
918                 }
919                 int udhLength;
920                 if (lpc.languageCode != 0 && shiftTable != 0) {
921                     udhLength = UDH_SEPTET_COST_LENGTH + UDH_SEPTET_COST_TWO_SHIFT_TABLES;
922                 } else if (lpc.languageCode != 0 || shiftTable != 0) {
923                     udhLength = UDH_SEPTET_COST_LENGTH + UDH_SEPTET_COST_ONE_SHIFT_TABLE;
924                 } else {
925                     udhLength = 0;
926                 }
927                 int msgCount;
928                 int septetsRemaining;
929                 if (septets + udhLength > SmsConstants.MAX_USER_DATA_SEPTETS) {
930                     if (udhLength == 0) {
931                         udhLength = UDH_SEPTET_COST_LENGTH;
932                     }
933                     udhLength += UDH_SEPTET_COST_CONCATENATED_MESSAGE;
934                     int septetsPerMessage = SmsConstants.MAX_USER_DATA_SEPTETS - udhLength;
935                     msgCount = (septets + septetsPerMessage - 1) / septetsPerMessage;
936                     septetsRemaining = (msgCount * septetsPerMessage) - septets;
937                 } else {
938                     msgCount = 1;
939                     septetsRemaining = SmsConstants.MAX_USER_DATA_SEPTETS - udhLength - septets;
940                 }
941                 // for 7-bit only mode, use language pair with the least unencodable chars
942                 int unencodableCount = lpc.unencodableCounts[shiftTable];
943                 if (use7bitOnly && unencodableCount > minUnencodableCount) {
944                     continue;
945                 }
946                 if ((use7bitOnly && unencodableCount < minUnencodableCount)
947                         || msgCount < ted.msgCount || (msgCount == ted.msgCount
948                         && septetsRemaining > ted.codeUnitsRemaining)) {
949                     minUnencodableCount = unencodableCount;
950                     ted.msgCount = msgCount;
951                     ted.codeUnitCount = septets;
952                     ted.codeUnitsRemaining = septetsRemaining;
953                     ted.languageTable = lpc.languageCode;
954                     ted.languageShiftTable = shiftTable;
955                 }
956             }
957         }
958 
959         if (ted.msgCount == Integer.MAX_VALUE) {
960             return null;
961         }
962 
963         return ted;
964     }
965 
966     /**
967      * Returns the index into <code>s</code> of the first character
968      * after <code>limit</code> septets have been reached, starting at
969      * index <code>start</code>.  This is used when dividing messages
970      * into units within the SMS message size limit.
971      *
972      * @param s source string
973      * @param start index of where to start counting septets
974      * @param limit maximum septets to include,
975      *   e.g. <code>MAX_USER_DATA_SEPTETS</code>
976      * @param langTable the 7 bit character table to use (0 for default GSM 7-bit alphabet)
977      * @param langShiftTable the 7 bit shift table to use (0 for default GSM extension table)
978      * @return index of first character that won't fit, or the length
979      *   of the entire string if everything fits
980      */
981     public static int
982     findGsmSeptetLimitIndex(String s, int start, int limit, int langTable, int langShiftTable) {
983         int accumulator = 0;
984         int size = s.length();
985 
986         SparseIntArray charToLangTable = sCharsToGsmTables[langTable];
987         SparseIntArray charToLangShiftTable = sCharsToShiftTables[langShiftTable];
988         for (int i = start; i < size; i++) {
989             int encodedSeptet = charToLangTable.get(s.charAt(i), -1);
990             if (encodedSeptet == -1) {
991                 encodedSeptet = charToLangShiftTable.get(s.charAt(i), -1);
992                 if (encodedSeptet == -1) {
993                     // char not found, assume we're replacing with space
994                     accumulator++;
995                 } else {
996                     accumulator += 2;  // escape character + shift table index
997                 }
998             } else {
999                 accumulator++;
1000             }
1001             if (accumulator > limit) {
1002                 return i;
1003             }
1004         }
1005         return size;
1006     }
1007 
1008     /**
1009      * Modify the array of enabled national language single shift tables for SMS
1010      * encoding. This is used for unit testing, but could also be used to
1011      * modify the enabled encodings based on the active MCC/MNC, for example.
1012      *
1013      * @param tables the new list of enabled single shift tables
1014      */
1015     public static synchronized void setEnabledSingleShiftTables(int[] tables) {
1016         sEnabledSingleShiftTables = tables;
1017         sDisableCountryEncodingCheck = true;
1018 
1019         if (tables.length > 0) {
1020             sHighestEnabledSingleShiftCode = tables[tables.length - 1];
1021         } else {
1022             sHighestEnabledSingleShiftCode = 0;
1023         }
1024     }
1025 
1026     /**
1027      * Modify the array of enabled national language locking shift tables for SMS
1028      * encoding. This is used for unit testing, but could also be used to
1029      * modify the enabled encodings based on the active MCC/MNC, for example.
1030      *
1031      * @param tables the new list of enabled locking shift tables
1032      */
1033     public static synchronized void setEnabledLockingShiftTables(int[] tables) {
1034         sEnabledLockingShiftTables = tables;
1035         sDisableCountryEncodingCheck = true;
1036     }
1037 
1038     /**
1039      * Return the array of enabled national language single shift tables for SMS
1040      * encoding. This is used for unit testing. The returned array is not a copy, so
1041      * the caller should be careful not to modify it.
1042      *
1043      * @return the list of enabled single shift tables
1044      */
1045     public static synchronized int[] getEnabledSingleShiftTables() {
1046         return sEnabledSingleShiftTables;
1047     }
1048 
1049     /**
1050      * Return the array of enabled national language locking shift tables for SMS
1051      * encoding. This is used for unit testing. The returned array is not a copy, so
1052      * the caller should be careful not to modify it.
1053      *
1054      * @return the list of enabled locking shift tables
1055      */
1056     public static synchronized int[] getEnabledLockingShiftTables() {
1057         return sEnabledLockingShiftTables;
1058     }
1059 
1060     /**
1061      * Enable country-specific language tables from MCC-specific overlays.
1062      * @context the context to use to get the TelephonyManager
1063      */
1064     private static void enableCountrySpecificEncodings() {
1065         Resources r = Resources.getSystem();
1066         // See comments in frameworks/base/core/res/res/values/config.xml for allowed values
1067         sEnabledSingleShiftTables = r.getIntArray(R.array.config_sms_enabled_single_shift_tables);
1068         sEnabledLockingShiftTables = r.getIntArray(R.array.config_sms_enabled_locking_shift_tables);
1069 
1070         if (sEnabledSingleShiftTables.length > 0) {
1071             sHighestEnabledSingleShiftCode =
1072                     sEnabledSingleShiftTables[sEnabledSingleShiftTables.length-1];
1073         } else {
1074             sHighestEnabledSingleShiftCode = 0;
1075         }
1076     }
1077 
1078     /** Reverse mapping from Unicode characters to indexes into language tables. */
1079     private static final SparseIntArray[] sCharsToGsmTables;
1080 
1081     /** Reverse mapping from Unicode characters to indexes into language shift tables. */
1082     private static final SparseIntArray[] sCharsToShiftTables;
1083 
1084     /** OEM configured list of enabled national language single shift tables for encoding. */
1085     private static int[] sEnabledSingleShiftTables;
1086 
1087     /** OEM configured list of enabled national language locking shift tables for encoding. */
1088     private static int[] sEnabledLockingShiftTables;
1089 
1090     /** Highest language code to include in array of single shift counters. */
1091     private static int sHighestEnabledSingleShiftCode;
1092 
1093     /** Flag to bypass check for country-specific overlays (for test cases only). */
1094     private static boolean sDisableCountryEncodingCheck = false;
1095 
1096     /**
1097      * Septet counter for a specific locking shift table and all of
1098      * the single shift tables that it can be paired with.
1099      */
1100     private static class LanguagePairCount {
1101         final int languageCode;
1102         final int[] septetCounts;
1103         final int[] unencodableCounts;
1104         LanguagePairCount(int code) {
1105             this.languageCode = code;
1106             int maxSingleShiftCode = sHighestEnabledSingleShiftCode;
1107             septetCounts = new int[maxSingleShiftCode + 1];
1108             unencodableCounts = new int[maxSingleShiftCode + 1];
1109             // set counters for disabled single shift tables to -1
1110             // (GSM default extension table index 0 is always enabled)
1111             for (int i = 1, tableOffset = 0; i <= maxSingleShiftCode; i++) {
1112                 if (sEnabledSingleShiftTables[tableOffset] == i) {
1113                     tableOffset++;
1114                 } else {
1115                     septetCounts[i] = -1;   // disabled
1116                 }
1117             }
1118             // exclude Turkish locking + Turkish single shift table and
1119             // Portuguese locking + Spanish single shift table (these
1120             // combinations will never be optimal for any input).
1121             if (code == 1 && maxSingleShiftCode >= 1) {
1122                 septetCounts[1] = -1;   // Turkish + Turkish
1123             } else if (code == 3 && maxSingleShiftCode >= 2) {
1124                 septetCounts[2] = -1;   // Portuguese + Spanish
1125             }
1126         }
1127     }
1128 
1129     /**
1130      * GSM default 7 bit alphabet plus national language locking shift character tables.
1131      * Comment lines above strings indicate the lower four bits of the table position.
1132      */
1133     private static final String[] sLanguageTables = {
1134         /* 3GPP TS 23.038 V9.1.1 section 6.2.1 - GSM 7 bit Default Alphabet
1135          01.....23.....4.....5.....6.....7.....8.....9.....A.B.....C.....D.E.....F.....0.....1 */
1136         "@\u00a3$\u00a5\u00e8\u00e9\u00f9\u00ec\u00f2\u00c7\n\u00d8\u00f8\r\u00c5\u00e5\u0394_"
1137             // 2.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....
1138             + "\u03a6\u0393\u039b\u03a9\u03a0\u03a8\u03a3\u0398\u039e\uffff\u00c6\u00e6\u00df"
1139             // F.....012.34.....56789ABCDEF0123456789ABCDEF0.....123456789ABCDEF0123456789A
1140             + "\u00c9 !\"#\u00a4%&'()*+,-./0123456789:;<=>?\u00a1ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1141             // B.....C.....D.....E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D.....
1142             + "\u00c4\u00d6\u00d1\u00dc\u00a7\u00bfabcdefghijklmnopqrstuvwxyz\u00e4\u00f6\u00f1"
1143             // E.....F.....
1144             + "\u00fc\u00e0",
1145 
1146         /* A.3.1 Turkish National Language Locking Shift Table
1147          01.....23.....4.....5.....6.....7.....8.....9.....A.B.....C.....D.E.....F.....0.....1 */
1148         "@\u00a3$\u00a5\u20ac\u00e9\u00f9\u0131\u00f2\u00c7\n\u011e\u011f\r\u00c5\u00e5\u0394_"
1149             // 2.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....
1150             + "\u03a6\u0393\u039b\u03a9\u03a0\u03a8\u03a3\u0398\u039e\uffff\u015e\u015f\u00df"
1151             // F.....012.34.....56789ABCDEF0123456789ABCDEF0.....123456789ABCDEF0123456789A
1152             + "\u00c9 !\"#\u00a4%&'()*+,-./0123456789:;<=>?\u0130ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1153             // B.....C.....D.....E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D.....
1154             + "\u00c4\u00d6\u00d1\u00dc\u00a7\u00e7abcdefghijklmnopqrstuvwxyz\u00e4\u00f6\u00f1"
1155             // E.....F.....
1156             + "\u00fc\u00e0",
1157 
1158         /* A.3.2 Void (no locking shift table for Spanish) */
1159         "",
1160 
1161         /* A.3.3 Portuguese National Language Locking Shift Table
1162          01.....23.....4.....5.....6.....7.....8.....9.....A.B.....C.....D.E.....F.....0.....1 */
1163         "@\u00a3$\u00a5\u00ea\u00e9\u00fa\u00ed\u00f3\u00e7\n\u00d4\u00f4\r\u00c1\u00e1\u0394_"
1164             // 2.....3.....4.....5.....67.8.....9.....AB.....C.....D.....E.....F.....012.34.....
1165             + "\u00aa\u00c7\u00c0\u221e^\\\u20ac\u00d3|\uffff\u00c2\u00e2\u00ca\u00c9 !\"#\u00ba"
1166             // 56789ABCDEF0123456789ABCDEF0.....123456789ABCDEF0123456789AB.....C.....D.....E.....
1167             + "%&'()*+,-./0123456789:;<=>?\u00cdABCDEFGHIJKLMNOPQRSTUVWXYZ\u00c3\u00d5\u00da\u00dc"
1168             // F.....0123456789ABCDEF0123456789AB.....C.....DE.....F.....
1169             + "\u00a7~abcdefghijklmnopqrstuvwxyz\u00e3\u00f5`\u00fc\u00e0",
1170 
1171         /* A.3.4 Bengali National Language Locking Shift Table
1172          0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....CD.EF.....0..... */
1173         "\u0981\u0982\u0983\u0985\u0986\u0987\u0988\u0989\u098a\u098b\n\u098c \r \u098f\u0990"
1174             // 123.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....F.....
1175             + "  \u0993\u0994\u0995\u0996\u0997\u0998\u0999\u099a\uffff\u099b\u099c\u099d\u099e"
1176             // 012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789ABC
1177             + " !\u099f\u09a0\u09a1\u09a2\u09a3\u09a4)(\u09a5\u09a6,\u09a7.\u09a80123456789:; "
1178             // D.....E.....F0.....1.....2.....3.....4.....56.....789A.....B.....C.....D.....
1179             + "\u09aa\u09ab?\u09ac\u09ad\u09ae\u09af\u09b0 \u09b2   \u09b6\u09b7\u09b8\u09b9"
1180             // E.....F.....0.....1.....2.....3.....4.....5.....6.....789.....A.....BCD.....E.....
1181             + "\u09bc\u09bd\u09be\u09bf\u09c0\u09c1\u09c2\u09c3\u09c4  \u09c7\u09c8  \u09cb\u09cc"
1182             // F.....0.....123456789ABCDEF0123456789AB.....C.....D.....E.....F.....
1183             + "\u09cd\u09ceabcdefghijklmnopqrstuvwxyz\u09d7\u09dc\u09dd\u09f0\u09f1",
1184 
1185         /* A.3.5 Gujarati National Language Locking Shift Table
1186          0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....C.....D.EF.....0.....*/
1187         "\u0a81\u0a82\u0a83\u0a85\u0a86\u0a87\u0a88\u0a89\u0a8a\u0a8b\n\u0a8c\u0a8d\r \u0a8f\u0a90"
1188             // 1.....23.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....
1189             + "\u0a91 \u0a93\u0a94\u0a95\u0a96\u0a97\u0a98\u0a99\u0a9a\uffff\u0a9b\u0a9c\u0a9d"
1190             // F.....012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789AB
1191             + "\u0a9e !\u0a9f\u0aa0\u0aa1\u0aa2\u0aa3\u0aa4)(\u0aa5\u0aa6,\u0aa7.\u0aa80123456789:;"
1192             // CD.....E.....F0.....1.....2.....3.....4.....56.....7.....89.....A.....B.....C.....
1193             + " \u0aaa\u0aab?\u0aac\u0aad\u0aae\u0aaf\u0ab0 \u0ab2\u0ab3 \u0ab5\u0ab6\u0ab7\u0ab8"
1194             // D.....E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89.....A.....
1195             + "\u0ab9\u0abc\u0abd\u0abe\u0abf\u0ac0\u0ac1\u0ac2\u0ac3\u0ac4\u0ac5 \u0ac7\u0ac8"
1196             // B.....CD.....E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D.....E.....
1197             + "\u0ac9 \u0acb\u0acc\u0acd\u0ad0abcdefghijklmnopqrstuvwxyz\u0ae0\u0ae1\u0ae2\u0ae3"
1198             // F.....
1199             + "\u0af1",
1200 
1201         /* A.3.6 Hindi National Language Locking Shift Table
1202          0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....C.....D.E.....F.....*/
1203         "\u0901\u0902\u0903\u0905\u0906\u0907\u0908\u0909\u090a\u090b\n\u090c\u090d\r\u090e\u090f"
1204             // 0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....
1205             + "\u0910\u0911\u0912\u0913\u0914\u0915\u0916\u0917\u0918\u0919\u091a\uffff\u091b\u091c"
1206             // E.....F.....012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....012345
1207             + "\u091d\u091e !\u091f\u0920\u0921\u0922\u0923\u0924)(\u0925\u0926,\u0927.\u0928012345"
1208             // 6789ABC.....D.....E.....F0.....1.....2.....3.....4.....5.....6.....7.....8.....
1209             + "6789:;\u0929\u092a\u092b?\u092c\u092d\u092e\u092f\u0930\u0931\u0932\u0933\u0934"
1210             // 9.....A.....B.....C.....D.....E.....F.....0.....1.....2.....3.....4.....5.....6.....
1211             + "\u0935\u0936\u0937\u0938\u0939\u093c\u093d\u093e\u093f\u0940\u0941\u0942\u0943\u0944"
1212             // 7.....8.....9.....A.....B.....C.....D.....E.....F.....0.....123456789ABCDEF012345678
1213             + "\u0945\u0946\u0947\u0948\u0949\u094a\u094b\u094c\u094d\u0950abcdefghijklmnopqrstuvwx"
1214             // 9AB.....C.....D.....E.....F.....
1215             + "yz\u0972\u097b\u097c\u097e\u097f",
1216 
1217         /* A.3.7 Kannada National Language Locking Shift Table
1218            NOTE: TS 23.038 V9.1.1 shows code 0x24 as \u0caa, corrected to \u0ca1 (typo)
1219          01.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....CD.E.....F.....0.....1 */
1220         " \u0c82\u0c83\u0c85\u0c86\u0c87\u0c88\u0c89\u0c8a\u0c8b\n\u0c8c \r\u0c8e\u0c8f\u0c90 "
1221             // 2.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....F.....
1222             + "\u0c92\u0c93\u0c94\u0c95\u0c96\u0c97\u0c98\u0c99\u0c9a\uffff\u0c9b\u0c9c\u0c9d\u0c9e"
1223             // 012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789ABC
1224             + " !\u0c9f\u0ca0\u0ca1\u0ca2\u0ca3\u0ca4)(\u0ca5\u0ca6,\u0ca7.\u0ca80123456789:; "
1225             // D.....E.....F0.....1.....2.....3.....4.....5.....6.....7.....89.....A.....B.....
1226             + "\u0caa\u0cab?\u0cac\u0cad\u0cae\u0caf\u0cb0\u0cb1\u0cb2\u0cb3 \u0cb5\u0cb6\u0cb7"
1227             // C.....D.....E.....F.....0.....1.....2.....3.....4.....5.....6.....78.....9.....
1228             + "\u0cb8\u0cb9\u0cbc\u0cbd\u0cbe\u0cbf\u0cc0\u0cc1\u0cc2\u0cc3\u0cc4 \u0cc6\u0cc7"
1229             // A.....BC.....D.....E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D.....
1230             + "\u0cc8 \u0cca\u0ccb\u0ccc\u0ccd\u0cd5abcdefghijklmnopqrstuvwxyz\u0cd6\u0ce0\u0ce1"
1231             // E.....F.....
1232             + "\u0ce2\u0ce3",
1233 
1234         /* A.3.8 Malayalam National Language Locking Shift Table
1235          01.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....CD.E.....F.....0.....1 */
1236         " \u0d02\u0d03\u0d05\u0d06\u0d07\u0d08\u0d09\u0d0a\u0d0b\n\u0d0c \r\u0d0e\u0d0f\u0d10 "
1237             // 2.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....F.....
1238             + "\u0d12\u0d13\u0d14\u0d15\u0d16\u0d17\u0d18\u0d19\u0d1a\uffff\u0d1b\u0d1c\u0d1d\u0d1e"
1239             // 012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789ABC
1240             + " !\u0d1f\u0d20\u0d21\u0d22\u0d23\u0d24)(\u0d25\u0d26,\u0d27.\u0d280123456789:; "
1241             // D.....E.....F0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.....
1242             + "\u0d2a\u0d2b?\u0d2c\u0d2d\u0d2e\u0d2f\u0d30\u0d31\u0d32\u0d33\u0d34\u0d35\u0d36"
1243             // B.....C.....D.....EF.....0.....1.....2.....3.....4.....5.....6.....78.....9.....
1244             + "\u0d37\u0d38\u0d39 \u0d3d\u0d3e\u0d3f\u0d40\u0d41\u0d42\u0d43\u0d44 \u0d46\u0d47"
1245             // A.....BC.....D.....E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D.....
1246             + "\u0d48 \u0d4a\u0d4b\u0d4c\u0d4d\u0d57abcdefghijklmnopqrstuvwxyz\u0d60\u0d61\u0d62"
1247             // E.....F.....
1248             + "\u0d63\u0d79",
1249 
1250         /* A.3.9 Oriya National Language Locking Shift Table
1251          0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....CD.EF.....0.....12 */
1252         "\u0b01\u0b02\u0b03\u0b05\u0b06\u0b07\u0b08\u0b09\u0b0a\u0b0b\n\u0b0c \r \u0b0f\u0b10  "
1253             // 3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....F.....01
1254             + "\u0b13\u0b14\u0b15\u0b16\u0b17\u0b18\u0b19\u0b1a\uffff\u0b1b\u0b1c\u0b1d\u0b1e !"
1255             // 2.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789ABCD.....
1256             + "\u0b1f\u0b20\u0b21\u0b22\u0b23\u0b24)(\u0b25\u0b26,\u0b27.\u0b280123456789:; \u0b2a"
1257             // E.....F0.....1.....2.....3.....4.....56.....7.....89.....A.....B.....C.....D.....
1258             + "\u0b2b?\u0b2c\u0b2d\u0b2e\u0b2f\u0b30 \u0b32\u0b33 \u0b35\u0b36\u0b37\u0b38\u0b39"
1259             // E.....F.....0.....1.....2.....3.....4.....5.....6.....789.....A.....BCD.....E.....
1260             + "\u0b3c\u0b3d\u0b3e\u0b3f\u0b40\u0b41\u0b42\u0b43\u0b44  \u0b47\u0b48  \u0b4b\u0b4c"
1261             // F.....0.....123456789ABCDEF0123456789AB.....C.....D.....E.....F.....
1262             + "\u0b4d\u0b56abcdefghijklmnopqrstuvwxyz\u0b57\u0b60\u0b61\u0b62\u0b63",
1263 
1264         /* A.3.10 Punjabi National Language Locking Shift Table
1265          0.....1.....2.....3.....4.....5.....6.....7.....8.....9A.BCD.EF.....0.....123.....4.....*/
1266         "\u0a01\u0a02\u0a03\u0a05\u0a06\u0a07\u0a08\u0a09\u0a0a \n  \r \u0a0f\u0a10  \u0a13\u0a14"
1267             // 5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....F.....012.....3.....
1268             + "\u0a15\u0a16\u0a17\u0a18\u0a19\u0a1a\uffff\u0a1b\u0a1c\u0a1d\u0a1e !\u0a1f\u0a20"
1269             // 4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789ABCD.....E.....F0.....
1270             + "\u0a21\u0a22\u0a23\u0a24)(\u0a25\u0a26,\u0a27.\u0a280123456789:; \u0a2a\u0a2b?\u0a2c"
1271             // 1.....2.....3.....4.....56.....7.....89.....A.....BC.....D.....E.....F0.....1.....
1272             + "\u0a2d\u0a2e\u0a2f\u0a30 \u0a32\u0a33 \u0a35\u0a36 \u0a38\u0a39\u0a3c \u0a3e\u0a3f"
1273             // 2.....3.....4.....56789.....A.....BCD.....E.....F.....0.....123456789ABCDEF012345678
1274             + "\u0a40\u0a41\u0a42    \u0a47\u0a48  \u0a4b\u0a4c\u0a4d\u0a51abcdefghijklmnopqrstuvwx"
1275             // 9AB.....C.....D.....E.....F.....
1276             + "yz\u0a70\u0a71\u0a72\u0a73\u0a74",
1277 
1278         /* A.3.11 Tamil National Language Locking Shift Table
1279          01.....2.....3.....4.....5.....6.....7.....8.....9A.BCD.E.....F.....0.....12.....3..... */
1280         " \u0b82\u0b83\u0b85\u0b86\u0b87\u0b88\u0b89\u0b8a \n  \r\u0b8e\u0b8f\u0b90 \u0b92\u0b93"
1281             // 4.....5.....6789.....A.....B.....CD.....EF.....012.....3456.....7.....89ABCDEF.....
1282             + "\u0b94\u0b95   \u0b99\u0b9a\uffff \u0b9c \u0b9e !\u0b9f   \u0ba3\u0ba4)(  , .\u0ba8"
1283             // 0123456789ABC.....D.....EF012.....3.....4.....5.....6.....7.....8.....9.....A.....
1284             + "0123456789:;\u0ba9\u0baa ?  \u0bae\u0baf\u0bb0\u0bb1\u0bb2\u0bb3\u0bb4\u0bb5\u0bb6"
1285             // B.....C.....D.....EF0.....1.....2.....3.....4.....5678.....9.....A.....BC.....D.....
1286             + "\u0bb7\u0bb8\u0bb9  \u0bbe\u0bbf\u0bc0\u0bc1\u0bc2   \u0bc6\u0bc7\u0bc8 \u0bca\u0bcb"
1287             // E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D.....E.....F.....
1288             + "\u0bcc\u0bcd\u0bd0abcdefghijklmnopqrstuvwxyz\u0bd7\u0bf0\u0bf1\u0bf2\u0bf9",
1289 
1290         /* A.3.12 Telugu National Language Locking Shift Table
1291          0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....CD.E.....F.....0.....*/
1292         "\u0c01\u0c02\u0c03\u0c05\u0c06\u0c07\u0c08\u0c09\u0c0a\u0c0b\n\u0c0c \r\u0c0e\u0c0f\u0c10"
1293             // 12.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....
1294             + " \u0c12\u0c13\u0c14\u0c15\u0c16\u0c17\u0c18\u0c19\u0c1a\uffff\u0c1b\u0c1c\u0c1d"
1295             // F.....012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789AB
1296             + "\u0c1e !\u0c1f\u0c20\u0c21\u0c22\u0c23\u0c24)(\u0c25\u0c26,\u0c27.\u0c280123456789:;"
1297             // CD.....E.....F0.....1.....2.....3.....4.....5.....6.....7.....89.....A.....B.....
1298             + " \u0c2a\u0c2b?\u0c2c\u0c2d\u0c2e\u0c2f\u0c30\u0c31\u0c32\u0c33 \u0c35\u0c36\u0c37"
1299             // C.....D.....EF.....0.....1.....2.....3.....4.....5.....6.....78.....9.....A.....B
1300             + "\u0c38\u0c39 \u0c3d\u0c3e\u0c3f\u0c40\u0c41\u0c42\u0c43\u0c44 \u0c46\u0c47\u0c48 "
1301             // C.....D.....E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D.....E.....
1302             + "\u0c4a\u0c4b\u0c4c\u0c4d\u0c55abcdefghijklmnopqrstuvwxyz\u0c56\u0c60\u0c61\u0c62"
1303             // F.....
1304             + "\u0c63",
1305 
1306         /* A.3.13 Urdu National Language Locking Shift Table
1307          0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....C.....D.E.....F.....*/
1308         "\u0627\u0622\u0628\u067b\u0680\u067e\u06a6\u062a\u06c2\u067f\n\u0679\u067d\r\u067a\u067c"
1309             // 0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....
1310             + "\u062b\u062c\u0681\u0684\u0683\u0685\u0686\u0687\u062d\u062e\u062f\uffff\u068c\u0688"
1311             // E.....F.....012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....012345
1312             + "\u0689\u068a !\u068f\u068d\u0630\u0631\u0691\u0693)(\u0699\u0632,\u0696.\u0698012345"
1313             // 6789ABC.....D.....E.....F0.....1.....2.....3.....4.....5.....6.....7.....8.....
1314             + "6789:;\u069a\u0633\u0634?\u0635\u0636\u0637\u0638\u0639\u0641\u0642\u06a9\u06aa"
1315             // 9.....A.....B.....C.....D.....E.....F.....0.....1.....2.....3.....4.....5.....6.....
1316             + "\u06ab\u06af\u06b3\u06b1\u0644\u0645\u0646\u06ba\u06bb\u06bc\u0648\u06c4\u06d5\u06c1"
1317             // 7.....8.....9.....A.....B.....C.....D.....E.....F.....0.....123456789ABCDEF012345678
1318             + "\u06be\u0621\u06cc\u06d0\u06d2\u064d\u0650\u064f\u0657\u0654abcdefghijklmnopqrstuvwx"
1319             // 9AB.....C.....D.....E.....F.....
1320             + "yz\u0655\u0651\u0653\u0656\u0670"
1321     };
1322 
1323     /**
1324      * GSM default extension table plus national language single shift character tables.
1325      */
1326     private static final String[] sLanguageShiftTables = new String[]{
1327         /* 6.2.1.1 GSM 7 bit Default Alphabet Extension Table
1328          0123456789A.....BCDEF0123456789ABCDEF0123456789ABCDEF.0123456789ABCDEF0123456789ABCDEF */
1329         "          \u000c         ^                   {}     \\            [~] |               "
1330             // 0123456789ABCDEF012345.....6789ABCDEF0123456789ABCDEF
1331             + "                     \u20ac                          ",
1332 
1333         /* A.2.1 Turkish National Language Single Shift Table
1334          0123456789A.....BCDEF0123456789ABCDEF0123456789ABCDEF.0123456789ABCDEF01234567.....8 */
1335         "          \u000c         ^                   {}     \\            [~] |      \u011e "
1336             // 9.....ABCDEF0123.....456789ABCDEF0123.....45.....67.....89.....ABCDEF0123.....
1337             + "\u0130         \u015e               \u00e7 \u20ac \u011f \u0131         \u015f"
1338             // 456789ABCDEF
1339             + "            ",
1340 
1341         /* A.2.2 Spanish National Language Single Shift Table
1342          0123456789.....A.....BCDEF0123456789ABCDEF0123456789ABCDEF.0123456789ABCDEF01.....23 */
1343         "         \u00e7\u000c         ^                   {}     \\            [~] |\u00c1  "
1344             // 456789.....ABCDEF.....012345.....6789ABCDEF01.....2345.....6789.....ABCDEF.....012
1345             + "     \u00cd     \u00d3     \u00da           \u00e1   \u20ac   \u00ed     \u00f3   "
1346             // 345.....6789ABCDEF
1347             + "  \u00fa          ",
1348 
1349         /* A.2.3 Portuguese National Language Single Shift Table
1350          012345.....6789.....A.....B.....C.....DE.....F.....012.....3.....45.....6.....7.....8....*/
1351         "     \u00ea   \u00e7\u000c\u00d4\u00f4 \u00c1\u00e1  \u03a6\u0393^\u03a9\u03a0\u03a8\u03a3"
1352             // 9.....ABCDEF.....0123456789ABCDEF.0123456789ABCDEF01.....23456789.....ABCDE
1353             + "\u0398     \u00ca        {}     \\            [~] |\u00c0       \u00cd     "
1354             // F.....012345.....6789AB.....C.....DEF01.....2345.....6789.....ABCDEF.....01234
1355             + "\u00d3     \u00da     \u00c3\u00d5    \u00c2   \u20ac   \u00ed     \u00f3     "
1356             // 5.....6789AB.....C.....DEF.....
1357             + "\u00fa     \u00e3\u00f5  \u00e2",
1358 
1359         /* A.2.4 Bengali National Language Single Shift Table
1360          01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */
1361         "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u09e6\u09e7 \u09e8\u09e9"
1362             // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C.....
1363             + "\u09ea\u09eb\u09ec\u09ed\u09ee\u09ef\u09df\u09e0\u09e1\u09e2{}\u09e3\u09f2\u09f3"
1364             // D.....E.....F.0.....1.....2.....3.....4.....56789ABCDEF0123456789ABCDEF
1365             + "\u09f4\u09f5\\\u09f6\u09f7\u09f8\u09f9\u09fa       [~] |ABCDEFGHIJKLMNO"
1366             // 0123456789ABCDEF012345.....6789ABCDEF0123456789ABCDEF
1367             + "PQRSTUVWXYZ          \u20ac                          ",
1368 
1369         /* A.2.5 Gujarati National Language Single Shift Table
1370          01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */
1371         "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0ae6\u0ae7"
1372             // E.....F.....0.....1.....2.....3.....4.....5.....6789ABCDEF.0123456789ABCDEF
1373             + "\u0ae8\u0ae9\u0aea\u0aeb\u0aec\u0aed\u0aee\u0aef  {}     \\            [~] "
1374             // 0123456789ABCDEF0123456789ABCDEF012345.....6789ABCDEF0123456789ABCDEF
1375             + "|ABCDEFGHIJKLMNOPQRSTUVWXYZ          \u20ac                          ",
1376 
1377         /* A.2.6 Hindi National Language Single Shift Table
1378          01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */
1379         "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0966\u0967"
1380             // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C.....
1381             + "\u0968\u0969\u096a\u096b\u096c\u096d\u096e\u096f\u0951\u0952{}\u0953\u0954\u0958"
1382             // D.....E.....F.0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.....
1383             + "\u0959\u095a\\\u095b\u095c\u095d\u095e\u095f\u0960\u0961\u0962\u0963\u0970\u0971"
1384             // BCDEF0123456789ABCDEF0123456789ABCDEF012345.....6789ABCDEF0123456789ABCDEF
1385             + " [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ          \u20ac                          ",
1386 
1387         /* A.2.7 Kannada National Language Single Shift Table
1388          01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */
1389         "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0ce6\u0ce7"
1390             // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....BCDEF.01234567
1391             + "\u0ce8\u0ce9\u0cea\u0ceb\u0cec\u0ced\u0cee\u0cef\u0cde\u0cf1{}\u0cf2    \\        "
1392             // 89ABCDEF0123456789ABCDEF0123456789ABCDEF012345.....6789ABCDEF0123456789ABCDEF
1393             + "    [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ          \u20ac                          ",
1394 
1395         /* A.2.8 Malayalam National Language Single Shift Table
1396          01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */
1397         "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0d66\u0d67"
1398             // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C.....
1399             + "\u0d68\u0d69\u0d6a\u0d6b\u0d6c\u0d6d\u0d6e\u0d6f\u0d70\u0d71{}\u0d72\u0d73\u0d74"
1400             // D.....E.....F.0.....1.....2.....3.....4.....56789ABCDEF0123456789ABCDEF0123456789A
1401             + "\u0d75\u0d7a\\\u0d7b\u0d7c\u0d7d\u0d7e\u0d7f       [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1402             // BCDEF012345.....6789ABCDEF0123456789ABCDEF
1403             + "          \u20ac                          ",
1404 
1405         /* A.2.9 Oriya National Language Single Shift Table
1406          01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */
1407         "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0b66\u0b67"
1408             // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C.....DE
1409             + "\u0b68\u0b69\u0b6a\u0b6b\u0b6c\u0b6d\u0b6e\u0b6f\u0b5c\u0b5d{}\u0b5f\u0b70\u0b71  "
1410             // F.0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF012345.....6789ABCDEF0123456789A
1411             + "\\            [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ          \u20ac                     "
1412             // BCDEF
1413             + "     ",
1414 
1415         /* A.2.10 Punjabi National Language Single Shift Table
1416          01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */
1417         "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0a66\u0a67"
1418             // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C.....
1419             + "\u0a68\u0a69\u0a6a\u0a6b\u0a6c\u0a6d\u0a6e\u0a6f\u0a59\u0a5a{}\u0a5b\u0a5c\u0a5e"
1420             // D.....EF.0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF012345.....6789ABCDEF01
1421             + "\u0a75 \\            [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ          \u20ac            "
1422             // 23456789ABCDEF
1423             + "              ",
1424 
1425         /* A.2.11 Tamil National Language Single Shift Table
1426            NOTE: TS 23.038 V9.1.1 shows code 0x24 as \u0bef, corrected to \u0bee (typo)
1427          01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */
1428         "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0be6\u0be7"
1429             // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C.....
1430             + "\u0be8\u0be9\u0bea\u0beb\u0bec\u0bed\u0bee\u0bef\u0bf3\u0bf4{}\u0bf5\u0bf6\u0bf7"
1431             // D.....E.....F.0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF012345.....6789ABC
1432             + "\u0bf8\u0bfa\\            [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ          \u20ac       "
1433             // DEF0123456789ABCDEF
1434             + "                   ",
1435 
1436         /* A.2.12 Telugu National Language Single Shift Table
1437            NOTE: TS 23.038 V9.1.1 shows code 0x22-0x23 as \u06cc\u06cd, corrected to \u0c6c\u0c6d
1438          01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789ABC.....D.....E.....F..... */
1439         "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*   \u0c66\u0c67\u0c68\u0c69"
1440             // 0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C.....D.....E.....F.
1441             + "\u0c6a\u0c6b\u0c6c\u0c6d\u0c6e\u0c6f\u0c58\u0c59{}\u0c78\u0c79\u0c7a\u0c7b\u0c7c\\"
1442             // 0.....1.....2.....3456789ABCDEF0123456789ABCDEF0123456789ABCDEF012345.....6789ABCD
1443             + "\u0c7d\u0c7e\u0c7f         [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ          \u20ac        "
1444             // EF0123456789ABCDEF
1445             + "                  ",
1446 
1447         /* A.2.13 Urdu National Language Single Shift Table
1448          01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */
1449         "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0600\u0601 \u06f0\u06f1"
1450             // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C.....
1451             + "\u06f2\u06f3\u06f4\u06f5\u06f6\u06f7\u06f8\u06f9\u060c\u060d{}\u060e\u060f\u0610"
1452             // D.....E.....F.0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.....
1453             + "\u0611\u0612\\\u0613\u0614\u061b\u061f\u0640\u0652\u0658\u066b\u066c\u0672\u0673"
1454             // B.....CDEF.....0123456789ABCDEF0123456789ABCDEF012345.....6789ABCDEF0123456789ABCDEF
1455             + "\u06cd[~]\u06d4|ABCDEFGHIJKLMNOPQRSTUVWXYZ          \u20ac                          "
1456     };
1457 
1458     static {
1459         enableCountrySpecificEncodings();
1460         int numTables = sLanguageTables.length;
1461         int numShiftTables = sLanguageShiftTables.length;
1462         if (numTables != numShiftTables) {
1463             Rlog.e(TAG, "Error: language tables array length " + numTables +
1464                     " != shift tables array length " + numShiftTables);
1465         }
1466 
1467         sCharsToGsmTables = new SparseIntArray[numTables];
1468         for (int i = 0; i < numTables; i++) {
1469             String table = sLanguageTables[i];
1470 
1471             int tableLen = table.length();
1472             if (tableLen != 0 && tableLen != 128) {
1473                 Rlog.e(TAG, "Error: language tables index " + i +
1474                         " length " + tableLen + " (expected 128 or 0)");
1475             }
1476 
1477             SparseIntArray charToGsmTable = new SparseIntArray(tableLen);
1478             sCharsToGsmTables[i] = charToGsmTable;
1479             for (int j = 0; j < tableLen; j++) {
1480                 char c = table.charAt(j);
1481                 charToGsmTable.put(c, j);
1482             }
1483         }
1484 
1485         sCharsToShiftTables = new SparseIntArray[numTables];
1486         for (int i = 0; i < numShiftTables; i++) {
1487             String shiftTable = sLanguageShiftTables[i];
1488 
1489             int shiftTableLen = shiftTable.length();
1490             if (shiftTableLen != 0 && shiftTableLen != 128) {
1491                 Rlog.e(TAG, "Error: language shift tables index " + i +
1492                         " length " + shiftTableLen + " (expected 128 or 0)");
1493             }
1494 
1495             SparseIntArray charToShiftTable = new SparseIntArray(shiftTableLen);
1496             sCharsToShiftTables[i] = charToShiftTable;
1497             for (int j = 0; j < shiftTableLen; j++) {
1498                 char c = shiftTable.charAt(j);
1499                 if (c != ' ') {
1500                     charToShiftTable.put(c, j);
1501                 }
1502             }
1503         }
1504     }
1505 }
1506