/* * Copyright (C) 2006 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.internal.telephony; import android.content.res.Resources; import android.text.TextUtils; import android.util.SparseIntArray; import android.util.Log; import java.nio.ByteBuffer; import java.nio.charset.Charset; import com.android.internal.R; import java.util.ArrayList; import java.util.List; import static android.telephony.SmsMessage.ENCODING_7BIT; import static android.telephony.SmsMessage.MAX_USER_DATA_SEPTETS; import static android.telephony.SmsMessage.MAX_USER_DATA_SEPTETS_WITH_HEADER; /** * This class implements the character set mapping between * the GSM SMS 7-bit alphabet specified in TS 23.038 6.2.1 * and UTF-16 * * {@hide} */ public class GsmAlphabet { private static final String TAG = "GSM"; private GsmAlphabet() { } //***** Constants /** * This escapes extended characters, and when present indicates that the * following character should be looked up in the "extended" table. * * gsmToChar(GSM_EXTENDED_ESCAPE) returns 0xffff */ public static final byte GSM_EXTENDED_ESCAPE = 0x1B; /** * User data header requires one octet for length. Count as one septet, because * all combinations of header elements below will have at least one free bit * when padding to the nearest septet boundary. */ public static final int UDH_SEPTET_COST_LENGTH = 1; /** * Using a non-default language locking shift table OR single shift table * requires a user data header of 3 octets, or 4 septets, plus UDH length. */ public static final int UDH_SEPTET_COST_ONE_SHIFT_TABLE = 4; /** * Using a non-default language locking shift table AND single shift table * requires a user data header of 6 octets, or 7 septets, plus UDH length. */ public static final int UDH_SEPTET_COST_TWO_SHIFT_TABLES = 7; /** * Multi-part messages require a user data header of 5 octets, or 6 septets, * plus UDH length. */ public static final int UDH_SEPTET_COST_CONCATENATED_MESSAGE = 6; /** * Converts a char to a GSM 7 bit table index. * Returns ' ' in GSM alphabet if there's no possible match. Returns * GSM_EXTENDED_ESCAPE if this character is in the extended table. * In this case, you must call charToGsmExtended() for the value * that should follow GSM_EXTENDED_ESCAPE in the GSM alphabet string. * @param c the character to convert * @return the GSM 7 bit table index for the specified character */ public static int charToGsm(char c) { try { return charToGsm(c, false); } catch (EncodeException ex) { // this should never happen return sCharsToGsmTables[0].get(' ', ' '); } } /** * Converts a char to a GSM 7 bit table index. * Returns GSM_EXTENDED_ESCAPE if this character is in the extended table. * In this case, you must call charToGsmExtended() for the value that * should follow GSM_EXTENDED_ESCAPE in the GSM alphabet string. * * @param c the character to convert * @param throwException If true, throws EncodeException on invalid char. * If false, returns GSM alphabet ' ' char. * @throws EncodeException encode error when throwException is true * @return the GSM 7 bit table index for the specified character */ public static int charToGsm(char c, boolean throwException) throws EncodeException { int ret; ret = sCharsToGsmTables[0].get(c, -1); if (ret == -1) { ret = sCharsToShiftTables[0].get(c, -1); if (ret == -1) { if (throwException) { throw new EncodeException(c); } else { return sCharsToGsmTables[0].get(' ', ' '); } } else { return GSM_EXTENDED_ESCAPE; } } return ret; } /** * Converts a char to an extended GSM 7 bit table index. * Extended chars should be escaped with GSM_EXTENDED_ESCAPE. * Returns ' ' in GSM alphabet if there's no possible match. * @param c the character to convert * @return the GSM 7 bit extended table index for the specified character */ public static int charToGsmExtended(char c) { int ret; ret = sCharsToShiftTables[0].get(c, -1); if (ret == -1) { return sCharsToGsmTables[0].get(' ', ' '); } return ret; } /** * Converts a character in the GSM alphabet into a char. * * If GSM_EXTENDED_ESCAPE is passed, 0xffff is returned. In this case, * the following character in the stream should be decoded with * gsmExtendedToChar(). * * If an unmappable value is passed (one greater than 127), ' ' is returned. * * @param gsmChar the GSM 7 bit table index to convert * @return the decoded character */ public static char gsmToChar(int gsmChar) { if (gsmChar >= 0 && gsmChar < 128) { return sLanguageTables[0].charAt(gsmChar); } else { return ' '; } } /** * Converts a character in the extended GSM alphabet into a char * * if GSM_EXTENDED_ESCAPE is passed, ' ' is returned since no second * extension page has yet been defined (see Note 1 in table 6.2.1.1 of * TS 23.038 v7.00) * * If an unmappable value is passed, the character from the GSM 7 bit * default table will be used (table 6.2.1.1 of TS 23.038). * * @param gsmChar the GSM 7 bit extended table index to convert * @return the decoded character */ public static char gsmExtendedToChar(int gsmChar) { if (gsmChar == GSM_EXTENDED_ESCAPE) { return ' '; } else if (gsmChar >= 0 && gsmChar < 128) { char c = sLanguageShiftTables[0].charAt(gsmChar); if (c == ' ') { return sLanguageTables[0].charAt(gsmChar); } else { return c; } } else { return ' '; // out of range } } /** * Converts a String into a byte array containing the 7-bit packed * GSM Alphabet representation of the string. If a header is provided, * this is included in the returned byte array and padded to a septet * boundary. This method is used by OEM code. * * @param data The text string to encode. * @param header Optional header (including length byte) that precedes * the encoded data, padded to septet boundary. * @return Byte array containing header and encoded data. * @throws EncodeException if String is too large to encode * @see #stringToGsm7BitPackedWithHeader(String, byte[], int, int) */ public static byte[] stringToGsm7BitPackedWithHeader(String data, byte[] header) throws EncodeException { return stringToGsm7BitPackedWithHeader(data, header, 0, 0); } /** * Converts a String into a byte array containing the 7-bit packed * GSM Alphabet representation of the string. If a header is provided, * this is included in the returned byte array and padded to a septet * boundary. * * Unencodable chars are encoded as spaces * * Byte 0 in the returned byte array is the count of septets used, * including the header and header padding. The returned byte array is * the minimum size required to store the packed septets. The returned * array cannot contain more than 255 septets. * * @param data The text string to encode. * @param header Optional header (including length byte) that precedes * the encoded data, padded to septet boundary. * @param languageTable the 7 bit language table, or 0 for the default GSM alphabet * @param languageShiftTable the 7 bit single shift language table, or 0 for the default * GSM extension table * @return Byte array containing header and encoded data. * @throws EncodeException if String is too large to encode */ public static byte[] stringToGsm7BitPackedWithHeader(String data, byte[] header, int languageTable, int languageShiftTable) throws EncodeException { if (header == null || header.length == 0) { return stringToGsm7BitPacked(data, languageTable, languageShiftTable); } int headerBits = (header.length + 1) * 8; int headerSeptets = (headerBits + 6) / 7; byte[] ret = stringToGsm7BitPacked(data, headerSeptets, true, languageTable, languageShiftTable); // Paste in the header ret[1] = (byte)header.length; System.arraycopy(header, 0, ret, 2, header.length); return ret; } /** * Converts a String into a byte array containing * the 7-bit packed GSM Alphabet representation of the string. * * Unencodable chars are encoded as spaces * * Byte 0 in the returned byte array is the count of septets used * The returned byte array is the minimum size required to store * the packed septets. The returned array cannot contain more than 255 * septets. * * @param data the data string to encode * @return the encoded string * @throws EncodeException if String is too large to encode */ public static byte[] stringToGsm7BitPacked(String data) throws EncodeException { return stringToGsm7BitPacked(data, 0, true, 0, 0); } /** * Converts a String into a byte array containing * the 7-bit packed GSM Alphabet representation of the string. * * Unencodable chars are encoded as spaces * * Byte 0 in the returned byte array is the count of septets used * The returned byte array is the minimum size required to store * the packed septets. The returned array cannot contain more than 255 * septets. * * @param data the data string to encode * @param languageTable the 7 bit language table, or 0 for the default GSM alphabet * @param languageShiftTable the 7 bit single shift language table, or 0 for the default * GSM extension table * @return the encoded string * @throws EncodeException if String is too large to encode */ public static byte[] stringToGsm7BitPacked(String data, int languageTable, int languageShiftTable) throws EncodeException { return stringToGsm7BitPacked(data, 0, true, languageTable, languageShiftTable); } /** * Converts a String into a byte array containing * the 7-bit packed GSM Alphabet representation of the string. * * Byte 0 in the returned byte array is the count of septets used * The returned byte array is the minimum size required to store * the packed septets. The returned array cannot contain more than 255 * septets. * * @param data the text to convert to septets * @param startingSeptetOffset the number of padding septets to put before * the character data at the beginning of the array * @param throwException If true, throws EncodeException on invalid char. * If false, replaces unencodable char with GSM alphabet space char. * @param languageTable the 7 bit language table, or 0 for the default GSM alphabet * @param languageShiftTable the 7 bit single shift language table, or 0 for the default * GSM extension table * @return the encoded message * * @throws EncodeException if String is too large to encode */ public static byte[] stringToGsm7BitPacked(String data, int startingSeptetOffset, boolean throwException, int languageTable, int languageShiftTable) throws EncodeException { int dataLen = data.length(); int septetCount = countGsmSeptetsUsingTables(data, !throwException, languageTable, languageShiftTable); if (septetCount == -1) { throw new EncodeException("countGsmSeptetsUsingTables(): unencodable char"); } septetCount += startingSeptetOffset; if (septetCount > 255) { throw new EncodeException("Payload cannot exceed 255 septets"); } int byteCount = ((septetCount * 7) + 7) / 8; byte[] ret = new byte[byteCount + 1]; // Include space for one byte length prefix. SparseIntArray charToLanguageTable = sCharsToGsmTables[languageTable]; SparseIntArray charToShiftTable = sCharsToShiftTables[languageShiftTable]; for (int i = 0, septets = startingSeptetOffset, bitOffset = startingSeptetOffset * 7; i < dataLen && septets < septetCount; i++, bitOffset += 7) { char c = data.charAt(i); int v = charToLanguageTable.get(c, -1); if (v == -1) { v = charToShiftTable.get(c, -1); // Lookup the extended char. if (v == -1) { if (throwException) { throw new EncodeException("stringToGsm7BitPacked(): unencodable char"); } else { v = charToLanguageTable.get(' ', ' '); // should return ASCII space } } else { packSmsChar(ret, bitOffset, GSM_EXTENDED_ESCAPE); bitOffset += 7; septets++; } } packSmsChar(ret, bitOffset, v); septets++; } ret[0] = (byte) (septetCount); // Validated by check above. return ret; } /** * Pack a 7-bit char into its appropriate place in a byte array * * @param packedChars the destination byte array * @param bitOffset the bit offset that the septet should be packed at * (septet index * 7) * @param value the 7-bit character to store */ private static void packSmsChar(byte[] packedChars, int bitOffset, int value) { int byteOffset = bitOffset / 8; int shift = bitOffset % 8; packedChars[++byteOffset] |= value << shift; if (shift > 1) { packedChars[++byteOffset] = (byte)(value >> (8 - shift)); } } /** * Convert a GSM alphabet 7 bit packed string (SMS string) into a * {@link java.lang.String}. * * See TS 23.038 6.1.2.1 for SMS Character Packing * * @param pdu the raw data from the pdu * @param offset the byte offset of * @param lengthSeptets string length in septets, not bytes * @return String representation or null on decoding exception */ public static String gsm7BitPackedToString(byte[] pdu, int offset, int lengthSeptets) { return gsm7BitPackedToString(pdu, offset, lengthSeptets, 0, 0, 0); } /** * Convert a GSM alphabet 7 bit packed string (SMS string) into a * {@link java.lang.String}. * * See TS 23.038 6.1.2.1 for SMS Character Packing * * @param pdu the raw data from the pdu * @param offset the byte offset of * @param lengthSeptets string length in septets, not bytes * @param numPaddingBits the number of padding bits before the start of the * string in the first byte * @param languageTable the 7 bit language table, or 0 for the default GSM alphabet * @param shiftTable the 7 bit single shift language table, or 0 for the default * GSM extension table * @return String representation or null on decoding exception */ public static String gsm7BitPackedToString(byte[] pdu, int offset, int lengthSeptets, int numPaddingBits, int languageTable, int shiftTable) { StringBuilder ret = new StringBuilder(lengthSeptets); if (languageTable < 0 || languageTable > sLanguageTables.length) { Log.w(TAG, "unknown language table " + languageTable + ", using default"); languageTable = 0; } if (shiftTable < 0 || shiftTable > sLanguageShiftTables.length) { Log.w(TAG, "unknown single shift table " + shiftTable + ", using default"); shiftTable = 0; } try { boolean prevCharWasEscape = false; String languageTableToChar = sLanguageTables[languageTable]; String shiftTableToChar = sLanguageShiftTables[shiftTable]; if (languageTableToChar.isEmpty()) { Log.w(TAG, "no language table for code " + languageTable + ", using default"); languageTableToChar = sLanguageTables[0]; } if (shiftTableToChar.isEmpty()) { Log.w(TAG, "no single shift table for code " + shiftTable + ", using default"); shiftTableToChar = sLanguageShiftTables[0]; } for (int i = 0 ; i < lengthSeptets ; i++) { int bitOffset = (7 * i) + numPaddingBits; int byteOffset = bitOffset / 8; int shift = bitOffset % 8; int gsmVal; gsmVal = (0x7f & (pdu[offset + byteOffset] >> shift)); // if it crosses a byte boundary if (shift > 1) { // set msb bits to 0 gsmVal &= 0x7f >> (shift - 1); gsmVal |= 0x7f & (pdu[offset + byteOffset + 1] << (8 - shift)); } if (prevCharWasEscape) { if (gsmVal == GSM_EXTENDED_ESCAPE) { ret.append(' '); // display ' ' for reserved double escape sequence } else { char c = shiftTableToChar.charAt(gsmVal); if (c == ' ') { ret.append(languageTableToChar.charAt(gsmVal)); } else { ret.append(c); } } prevCharWasEscape = false; } else if (gsmVal == GSM_EXTENDED_ESCAPE) { prevCharWasEscape = true; } else { ret.append(languageTableToChar.charAt(gsmVal)); } } } catch (RuntimeException ex) { Log.e(TAG, "Error GSM 7 bit packed: ", ex); return null; } return ret.toString(); } /** * Convert a GSM alphabet string that's stored in 8-bit unpacked * format (as it often appears in SIM records) into a String * * Field may be padded with trailing 0xff's. The decode stops * at the first 0xff encountered. * * @param data the byte array to decode * @param offset array offset for the first character to decode * @param length the number of bytes to decode * @return the decoded string */ public static String gsm8BitUnpackedToString(byte[] data, int offset, int length) { return gsm8BitUnpackedToString(data, offset, length, ""); } /** * Convert a GSM alphabet string that's stored in 8-bit unpacked * format (as it often appears in SIM records) into a String * * Field may be padded with trailing 0xff's. The decode stops * at the first 0xff encountered. * * Additionally, in some country(ex. Korea), there are non-ASCII or MBCS characters. * If a character set is given, characters in data are treat as MBCS. */ public static String gsm8BitUnpackedToString(byte[] data, int offset, int length, String characterset) { boolean isMbcs = false; Charset charset = null; ByteBuffer mbcsBuffer = null; if (!TextUtils.isEmpty(characterset) && !characterset.equalsIgnoreCase("us-ascii") && Charset.isSupported(characterset)) { isMbcs = true; charset = Charset.forName(characterset); mbcsBuffer = ByteBuffer.allocate(2); } // Always use GSM 7 bit default alphabet table for this method String languageTableToChar = sLanguageTables[0]; String shiftTableToChar = sLanguageShiftTables[0]; StringBuilder ret = new StringBuilder(length); boolean prevWasEscape = false; for (int i = offset ; i < offset + length ; i++) { // Never underestimate the pain that can be caused // by signed bytes int c = data[i] & 0xff; if (c == 0xff) { break; } else if (c == GSM_EXTENDED_ESCAPE) { if (prevWasEscape) { // Two escape chars in a row // We treat this as a space // See Note 1 in table 6.2.1.1 of TS 23.038 v7.00 ret.append(' '); prevWasEscape = false; } else { prevWasEscape = true; } } else { if (prevWasEscape) { char shiftChar = shiftTableToChar.charAt(c); if (shiftChar == ' ') { // display character from main table if not present in shift table ret.append(languageTableToChar.charAt(c)); } else { ret.append(shiftChar); } } else { if (!isMbcs || c < 0x80 || i + 1 >= offset + length) { ret.append(languageTableToChar.charAt(c)); } else { // isMbcs must be true. So both mbcsBuffer and charset are initialized. mbcsBuffer.clear(); mbcsBuffer.put(data, i++, 2); mbcsBuffer.flip(); ret.append(charset.decode(mbcsBuffer).toString()); } } prevWasEscape = false; } } return ret.toString(); } /** * Convert a string into an 8-bit unpacked GSM alphabet byte array. * Always uses GSM default 7-bit alphabet and extension table. * @param s the string to encode * @return the 8-bit GSM encoded byte array for the string */ public static byte[] stringToGsm8BitPacked(String s) { byte[] ret; int septets = countGsmSeptetsUsingTables(s, true, 0, 0); // Enough for all the septets and the length byte prefix ret = new byte[septets]; stringToGsm8BitUnpackedField(s, ret, 0, ret.length); return ret; } /** * Write a String into a GSM 8-bit unpacked field of * Field is padded with 0xff's, string is truncated if necessary * * @param s the string to encode * @param dest the destination byte array * @param offset the starting offset for the encoded string * @param length the maximum number of bytes to write */ public static void stringToGsm8BitUnpackedField(String s, byte dest[], int offset, int length) { int outByteIndex = offset; SparseIntArray charToLanguageTable = sCharsToGsmTables[0]; SparseIntArray charToShiftTable = sCharsToShiftTables[0]; // Septets are stored in byte-aligned octets for (int i = 0, sz = s.length() ; i < sz && (outByteIndex - offset) < length ; i++ ) { char c = s.charAt(i); int v = charToLanguageTable.get(c, -1); if (v == -1) { v = charToShiftTable.get(c, -1); if (v == -1) { v = charToLanguageTable.get(' ', ' '); // fall back to ASCII space } else { // make sure we can fit an escaped char if (! (outByteIndex + 1 - offset < length)) { break; } dest[outByteIndex++] = GSM_EXTENDED_ESCAPE; } } dest[outByteIndex++] = (byte)v; } // pad with 0xff's while((outByteIndex - offset) < length) { dest[outByteIndex++] = (byte)0xff; } } /** * Returns the count of 7-bit GSM alphabet characters * needed to represent this character. Counts unencodable char as 1 septet. * @param c the character to examine * @return the number of septets for this character */ public static int countGsmSeptets(char c) { try { return countGsmSeptets(c, false); } catch (EncodeException ex) { // This should never happen. return 0; } } /** * Returns the count of 7-bit GSM alphabet characters * needed to represent this character using the default 7 bit GSM alphabet. * @param c the character to examine * @param throwsException If true, throws EncodeException if unencodable * char. Otherwise, counts invalid char as 1 septet. * @return the number of septets for this character * @throws EncodeException the character can't be encoded and throwsException is true */ public static int countGsmSeptets(char c, boolean throwsException) throws EncodeException { if (sCharsToGsmTables[0].get(c, -1) != -1) { return 1; } if (sCharsToShiftTables[0].get(c, -1) != -1) { return 2; } if (throwsException) { throw new EncodeException(c); } else { // count as a space char return 1; } } /** * Returns the count of 7-bit GSM alphabet characters needed * to represent this string, using the specified 7-bit language table * and extension table (0 for GSM default tables). * @param s the Unicode string that will be encoded * @param use7bitOnly allow using space in place of unencodable character if true, * otherwise, return -1 if any characters are unencodable * @param languageTable the 7 bit language table, or 0 for the default GSM alphabet * @param languageShiftTable the 7 bit single shift language table, or 0 for the default * GSM extension table * @return the septet count for s using the specified language tables, or -1 if any * characters are unencodable and use7bitOnly is false */ public static int countGsmSeptetsUsingTables(CharSequence s, boolean use7bitOnly, int languageTable, int languageShiftTable) { int count = 0; int sz = s.length(); SparseIntArray charToLanguageTable = sCharsToGsmTables[languageTable]; SparseIntArray charToShiftTable = sCharsToShiftTables[languageShiftTable]; for (int i = 0; i < sz; i++) { char c = s.charAt(i); if (c == GSM_EXTENDED_ESCAPE) { Log.w(TAG, "countGsmSeptets() string contains Escape character, skipping."); continue; } if (charToLanguageTable.get(c, -1) != -1) { count++; } else if (charToShiftTable.get(c, -1) != -1) { count += 2; // escape + shift table index } else if (use7bitOnly) { count++; // encode as space } else { return -1; // caller must check for this case } } return count; } /** * Returns the count of 7-bit GSM alphabet characters * needed to represent this string, and the language table and * language shift table used to achieve this result. * For multi-part text messages, each message part may use its * own language table encoding as specified in the message header * for that message. However, this method will only return the * optimal encoding for the message as a whole. When the individual * pieces are encoded, a more optimal encoding may be chosen for each * piece of the message, but the message will be split into pieces * based on the encoding chosen for the message as a whole. * @param s the Unicode string that will be encoded * @param use7bitOnly allow using space in place of unencodable character if true, * using the language table pair with the fewest unencodable characters * @return a TextEncodingDetails object containing the message and * character counts for the most efficient 7-bit encoding, * or null if there are no suitable language tables to encode the string. */ public static SmsMessageBase.TextEncodingDetails countGsmSeptets(CharSequence s, boolean use7bitOnly) { // fast path for common case where no national language shift tables are enabled if (sEnabledSingleShiftTables.length + sEnabledLockingShiftTables.length == 0) { SmsMessageBase.TextEncodingDetails ted = new SmsMessageBase.TextEncodingDetails(); int septets = GsmAlphabet.countGsmSeptetsUsingTables(s, use7bitOnly, 0, 0); if (septets == -1) { return null; } ted.codeUnitSize = ENCODING_7BIT; ted.codeUnitCount = septets; if (septets > MAX_USER_DATA_SEPTETS) { ted.msgCount = (septets + (MAX_USER_DATA_SEPTETS_WITH_HEADER - 1)) / MAX_USER_DATA_SEPTETS_WITH_HEADER; ted.codeUnitsRemaining = (ted.msgCount * MAX_USER_DATA_SEPTETS_WITH_HEADER) - septets; } else { ted.msgCount = 1; ted.codeUnitsRemaining = MAX_USER_DATA_SEPTETS - septets; } ted.codeUnitSize = ENCODING_7BIT; return ted; } int maxSingleShiftCode = sHighestEnabledSingleShiftCode; List lpcList = new ArrayList( sEnabledLockingShiftTables.length + 1); // Always add default GSM 7-bit alphabet table lpcList.add(new LanguagePairCount(0)); for (int i : sEnabledLockingShiftTables) { // Avoid adding default table twice in case 0 is in the list of allowed tables if (i != 0 && !sLanguageTables[i].isEmpty()) { lpcList.add(new LanguagePairCount(i)); } } int sz = s.length(); // calculate septet count for each valid table / shift table pair for (int i = 0; i < sz && !lpcList.isEmpty(); i++) { char c = s.charAt(i); if (c == GSM_EXTENDED_ESCAPE) { Log.w(TAG, "countGsmSeptets() string contains Escape character, ignoring!"); continue; } // iterate through enabled locking shift tables for (LanguagePairCount lpc : lpcList) { int tableIndex = sCharsToGsmTables[lpc.languageCode].get(c, -1); if (tableIndex == -1) { // iterate through single shift tables for this locking table for (int table = 0; table <= maxSingleShiftCode; table++) { if (lpc.septetCounts[table] != -1) { int shiftTableIndex = sCharsToShiftTables[table].get(c, -1); if (shiftTableIndex == -1) { if (use7bitOnly) { // can't encode char, use space instead lpc.septetCounts[table]++; lpc.unencodableCounts[table]++; } else { // can't encode char, remove language pair from list lpc.septetCounts[table] = -1; } } else { // encode as Escape + index into shift table lpc.septetCounts[table] += 2; } } } } else { // encode as index into locking shift table for all pairs for (int table = 0; table <= maxSingleShiftCode; table++) { if (lpc.septetCounts[table] != -1) { lpc.septetCounts[table]++; } } } } } // find the least cost encoding (lowest message count and most code units remaining) SmsMessageBase.TextEncodingDetails ted = new SmsMessageBase.TextEncodingDetails(); ted.msgCount = Integer.MAX_VALUE; ted.codeUnitSize = ENCODING_7BIT; int minUnencodableCount = Integer.MAX_VALUE; for (LanguagePairCount lpc : lpcList) { for (int shiftTable = 0; shiftTable <= maxSingleShiftCode; shiftTable++) { int septets = lpc.septetCounts[shiftTable]; if (septets == -1) { continue; } int udhLength; if (lpc.languageCode != 0 && shiftTable != 0) { udhLength = UDH_SEPTET_COST_LENGTH + UDH_SEPTET_COST_TWO_SHIFT_TABLES; } else if (lpc.languageCode != 0 || shiftTable != 0) { udhLength = UDH_SEPTET_COST_LENGTH + UDH_SEPTET_COST_ONE_SHIFT_TABLE; } else { udhLength = 0; } int msgCount; int septetsRemaining; if (septets + udhLength > MAX_USER_DATA_SEPTETS) { if (udhLength == 0) { udhLength = UDH_SEPTET_COST_LENGTH; } udhLength += UDH_SEPTET_COST_CONCATENATED_MESSAGE; int septetsPerMessage = MAX_USER_DATA_SEPTETS - udhLength; msgCount = (septets + septetsPerMessage - 1) / septetsPerMessage; septetsRemaining = (msgCount * septetsPerMessage) - septets; } else { msgCount = 1; septetsRemaining = MAX_USER_DATA_SEPTETS - udhLength - septets; } // for 7-bit only mode, use language pair with the least unencodable chars int unencodableCount = lpc.unencodableCounts[shiftTable]; if (use7bitOnly && unencodableCount > minUnencodableCount) { continue; } if ((use7bitOnly && unencodableCount < minUnencodableCount) || msgCount < ted.msgCount || (msgCount == ted.msgCount && septetsRemaining > ted.codeUnitsRemaining)) { minUnencodableCount = unencodableCount; ted.msgCount = msgCount; ted.codeUnitCount = septets; ted.codeUnitsRemaining = septetsRemaining; ted.languageTable = lpc.languageCode; ted.languageShiftTable = shiftTable; } } } if (ted.msgCount == Integer.MAX_VALUE) { return null; } return ted; } /** * Returns the index into s of the first character * after limit septets have been reached, starting at * index start. This is used when dividing messages * into units within the SMS message size limit. * * @param s source string * @param start index of where to start counting septets * @param limit maximum septets to include, * e.g. MAX_USER_DATA_SEPTETS * @param langTable the 7 bit character table to use (0 for default GSM 7-bit alphabet) * @param langShiftTable the 7 bit shift table to use (0 for default GSM extension table) * @return index of first character that won't fit, or the length * of the entire string if everything fits */ public static int findGsmSeptetLimitIndex(String s, int start, int limit, int langTable, int langShiftTable) { int accumulator = 0; int size = s.length(); SparseIntArray charToLangTable = sCharsToGsmTables[langTable]; SparseIntArray charToLangShiftTable = sCharsToShiftTables[langShiftTable]; for (int i = start; i < size; i++) { int encodedSeptet = charToLangTable.get(s.charAt(i), -1); if (encodedSeptet == -1) { encodedSeptet = charToLangShiftTable.get(s.charAt(i), -1); if (encodedSeptet == -1) { // char not found, assume we're replacing with space accumulator++; } else { accumulator += 2; // escape character + shift table index } } else { accumulator++; } if (accumulator > limit) { return i; } } return size; } /** * Modify the array of enabled national language single shift tables for SMS * encoding. This is used for unit testing, but could also be used to * modify the enabled encodings based on the active MCC/MNC, for example. * * @param tables the new list of enabled single shift tables */ static synchronized void setEnabledSingleShiftTables(int[] tables) { sEnabledSingleShiftTables = tables; if (tables.length > 0) { sHighestEnabledSingleShiftCode = tables[tables.length - 1]; } else { sHighestEnabledSingleShiftCode = 0; } } /** * Modify the array of enabled national language locking shift tables for SMS * encoding. This is used for unit testing, but could also be used to * modify the enabled encodings based on the active MCC/MNC, for example. * * @param tables the new list of enabled locking shift tables */ static synchronized void setEnabledLockingShiftTables(int[] tables) { sEnabledLockingShiftTables = tables; } /** * Return the array of enabled national language single shift tables for SMS * encoding. This is used for unit testing. The returned array is not a copy, so * the caller should be careful not to modify it. * * @return the list of enabled single shift tables */ static synchronized int[] getEnabledSingleShiftTables() { return sEnabledSingleShiftTables; } /** * Return the array of enabled national language locking shift tables for SMS * encoding. This is used for unit testing. The returned array is not a copy, so * the caller should be careful not to modify it. * * @return the list of enabled locking shift tables */ static synchronized int[] getEnabledLockingShiftTables() { return sEnabledLockingShiftTables; } /** Reverse mapping from Unicode characters to indexes into language tables. */ private static final SparseIntArray[] sCharsToGsmTables; /** Reverse mapping from Unicode characters to indexes into language shift tables. */ private static final SparseIntArray[] sCharsToShiftTables; /** OEM configured list of enabled national language single shift tables for encoding. */ private static int[] sEnabledSingleShiftTables; /** OEM configured list of enabled national language locking shift tables for encoding. */ private static int[] sEnabledLockingShiftTables; /** Highest language code to include in array of single shift counters. */ private static int sHighestEnabledSingleShiftCode; /** * Septet counter for a specific locking shift table and all of * the single shift tables that it can be paired with. */ private static class LanguagePairCount { final int languageCode; final int[] septetCounts; final int[] unencodableCounts; LanguagePairCount(int code) { this.languageCode = code; int maxSingleShiftCode = sHighestEnabledSingleShiftCode; septetCounts = new int[maxSingleShiftCode + 1]; unencodableCounts = new int[maxSingleShiftCode + 1]; // set counters for disabled single shift tables to -1 // (GSM default extension table index 0 is always enabled) for (int i = 1, tableOffset = 0; i <= maxSingleShiftCode; i++) { if (sEnabledSingleShiftTables[tableOffset] == i) { tableOffset++; } else { septetCounts[i] = -1; // disabled } } // exclude Turkish locking + Turkish single shift table and // Portuguese locking + Spanish single shift table (these // combinations will never be optimal for any input). if (code == 1 && maxSingleShiftCode >= 1) { septetCounts[1] = -1; // Turkish + Turkish } else if (code == 3 && maxSingleShiftCode >= 2) { septetCounts[2] = -1; // Portuguese + Spanish } } } /** * GSM default 7 bit alphabet plus national language locking shift character tables. * Comment lines above strings indicate the lower four bits of the table position. */ private static final String[] sLanguageTables = { /* 3GPP TS 23.038 V9.1.1 section 6.2.1 - GSM 7 bit Default Alphabet 01.....23.....4.....5.....6.....7.....8.....9.....A.B.....C.....D.E.....F.....0.....1 */ "@\u00a3$\u00a5\u00e8\u00e9\u00f9\u00ec\u00f2\u00c7\n\u00d8\u00f8\r\u00c5\u00e5\u0394_" // 2.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E..... + "\u03a6\u0393\u039b\u03a9\u03a0\u03a8\u03a3\u0398\u039e\uffff\u00c6\u00e6\u00df" // F.....012.34.....56789ABCDEF0123456789ABCDEF0.....123456789ABCDEF0123456789A + "\u00c9 !\"#\u00a4%&'()*+,-./0123456789:;<=>?\u00a1ABCDEFGHIJKLMNOPQRSTUVWXYZ" // B.....C.....D.....E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D..... + "\u00c4\u00d6\u00d1\u00dc\u00a7\u00bfabcdefghijklmnopqrstuvwxyz\u00e4\u00f6\u00f1" // E.....F..... + "\u00fc\u00e0", /* A.3.1 Turkish National Language Locking Shift Table 01.....23.....4.....5.....6.....7.....8.....9.....A.B.....C.....D.E.....F.....0.....1 */ "@\u00a3$\u00a5\u20ac\u00e9\u00f9\u0131\u00f2\u00c7\n\u011e\u011f\r\u00c5\u00e5\u0394_" // 2.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E..... + "\u03a6\u0393\u039b\u03a9\u03a0\u03a8\u03a3\u0398\u039e\uffff\u015e\u015f\u00df" // F.....012.34.....56789ABCDEF0123456789ABCDEF0.....123456789ABCDEF0123456789A + "\u00c9 !\"#\u00a4%&'()*+,-./0123456789:;<=>?\u0130ABCDEFGHIJKLMNOPQRSTUVWXYZ" // B.....C.....D.....E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D..... + "\u00c4\u00d6\u00d1\u00dc\u00a7\u00e7abcdefghijklmnopqrstuvwxyz\u00e4\u00f6\u00f1" // E.....F..... + "\u00fc\u00e0", /* A.3.2 Void (no locking shift table for Spanish) */ "", /* A.3.3 Portuguese National Language Locking Shift Table 01.....23.....4.....5.....6.....7.....8.....9.....A.B.....C.....D.E.....F.....0.....1 */ "@\u00a3$\u00a5\u00ea\u00e9\u00fa\u00ed\u00f3\u00e7\n\u00d4\u00f4\r\u00c1\u00e1\u0394_" // 2.....3.....4.....5.....67.8.....9.....AB.....C.....D.....E.....F.....012.34..... + "\u00aa\u00c7\u00c0\u221e^\\\u20ac\u00d3|\uffff\u00c2\u00e2\u00ca\u00c9 !\"#\u00ba" // 56789ABCDEF0123456789ABCDEF0.....123456789ABCDEF0123456789AB.....C.....D.....E..... + "%&'()*+,-./0123456789:;<=>?\u00cdABCDEFGHIJKLMNOPQRSTUVWXYZ\u00c3\u00d5\u00da\u00dc" // F.....0123456789ABCDEF0123456789AB.....C.....DE.....F..... + "\u00a7~abcdefghijklmnopqrstuvwxyz\u00e3\u00f5`\u00fc\u00e0", /* A.3.4 Bengali National Language Locking Shift Table 0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....CD.EF.....0..... */ "\u0981\u0982\u0983\u0985\u0986\u0987\u0988\u0989\u098a\u098b\n\u098c \r \u098f\u0990" // 123.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....F..... + " \u0993\u0994\u0995\u0996\u0997\u0998\u0999\u099a\uffff\u099b\u099c\u099d\u099e" // 012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789ABC + " !\u099f\u09a0\u09a1\u09a2\u09a3\u09a4)(\u09a5\u09a6,\u09a7.\u09a80123456789:; " // D.....E.....F0.....1.....2.....3.....4.....56.....789A.....B.....C.....D..... + "\u09aa\u09ab?\u09ac\u09ad\u09ae\u09af\u09b0 \u09b2 \u09b6\u09b7\u09b8\u09b9" // E.....F.....0.....1.....2.....3.....4.....5.....6.....789.....A.....BCD.....E..... + "\u09bc\u09bd\u09be\u09bf\u09c0\u09c1\u09c2\u09c3\u09c4 \u09c7\u09c8 \u09cb\u09cc" // F.....0.....123456789ABCDEF0123456789AB.....C.....D.....E.....F..... + "\u09cd\u09ceabcdefghijklmnopqrstuvwxyz\u09d7\u09dc\u09dd\u09f0\u09f1", /* A.3.5 Gujarati National Language Locking Shift Table 0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....C.....D.EF.....0.....*/ "\u0a81\u0a82\u0a83\u0a85\u0a86\u0a87\u0a88\u0a89\u0a8a\u0a8b\n\u0a8c\u0a8d\r \u0a8f\u0a90" // 1.....23.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E..... + "\u0a91 \u0a93\u0a94\u0a95\u0a96\u0a97\u0a98\u0a99\u0a9a\uffff\u0a9b\u0a9c\u0a9d" // F.....012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789AB + "\u0a9e !\u0a9f\u0aa0\u0aa1\u0aa2\u0aa3\u0aa4)(\u0aa5\u0aa6,\u0aa7.\u0aa80123456789:;" // CD.....E.....F0.....1.....2.....3.....4.....56.....7.....89.....A.....B.....C..... + " \u0aaa\u0aab?\u0aac\u0aad\u0aae\u0aaf\u0ab0 \u0ab2\u0ab3 \u0ab5\u0ab6\u0ab7\u0ab8" // D.....E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89.....A..... + "\u0ab9\u0abc\u0abd\u0abe\u0abf\u0ac0\u0ac1\u0ac2\u0ac3\u0ac4\u0ac5 \u0ac7\u0ac8" // B.....CD.....E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D.....E..... + "\u0ac9 \u0acb\u0acc\u0acd\u0ad0abcdefghijklmnopqrstuvwxyz\u0ae0\u0ae1\u0ae2\u0ae3" // F..... + "\u0af1", /* A.3.6 Hindi National Language Locking Shift Table 0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....C.....D.E.....F.....*/ "\u0901\u0902\u0903\u0905\u0906\u0907\u0908\u0909\u090a\u090b\n\u090c\u090d\r\u090e\u090f" // 0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D..... + "\u0910\u0911\u0912\u0913\u0914\u0915\u0916\u0917\u0918\u0919\u091a\uffff\u091b\u091c" // E.....F.....012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....012345 + "\u091d\u091e !\u091f\u0920\u0921\u0922\u0923\u0924)(\u0925\u0926,\u0927.\u0928012345" // 6789ABC.....D.....E.....F0.....1.....2.....3.....4.....5.....6.....7.....8..... + "6789:;\u0929\u092a\u092b?\u092c\u092d\u092e\u092f\u0930\u0931\u0932\u0933\u0934" // 9.....A.....B.....C.....D.....E.....F.....0.....1.....2.....3.....4.....5.....6..... + "\u0935\u0936\u0937\u0938\u0939\u093c\u093d\u093e\u093f\u0940\u0941\u0942\u0943\u0944" // 7.....8.....9.....A.....B.....C.....D.....E.....F.....0.....123456789ABCDEF012345678 + "\u0945\u0946\u0947\u0948\u0949\u094a\u094b\u094c\u094d\u0950abcdefghijklmnopqrstuvwx" // 9AB.....C.....D.....E.....F..... + "yz\u0972\u097b\u097c\u097e\u097f", /* A.3.7 Kannada National Language Locking Shift Table NOTE: TS 23.038 V9.1.1 shows code 0x24 as \u0caa, corrected to \u0ca1 (typo) 01.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....CD.E.....F.....0.....1 */ " \u0c82\u0c83\u0c85\u0c86\u0c87\u0c88\u0c89\u0c8a\u0c8b\n\u0c8c \r\u0c8e\u0c8f\u0c90 " // 2.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....F..... + "\u0c92\u0c93\u0c94\u0c95\u0c96\u0c97\u0c98\u0c99\u0c9a\uffff\u0c9b\u0c9c\u0c9d\u0c9e" // 012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789ABC + " !\u0c9f\u0ca0\u0ca1\u0ca2\u0ca3\u0ca4)(\u0ca5\u0ca6,\u0ca7.\u0ca80123456789:; " // D.....E.....F0.....1.....2.....3.....4.....5.....6.....7.....89.....A.....B..... + "\u0caa\u0cab?\u0cac\u0cad\u0cae\u0caf\u0cb0\u0cb1\u0cb2\u0cb3 \u0cb5\u0cb6\u0cb7" // C.....D.....E.....F.....0.....1.....2.....3.....4.....5.....6.....78.....9..... + "\u0cb8\u0cb9\u0cbc\u0cbd\u0cbe\u0cbf\u0cc0\u0cc1\u0cc2\u0cc3\u0cc4 \u0cc6\u0cc7" // A.....BC.....D.....E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D..... + "\u0cc8 \u0cca\u0ccb\u0ccc\u0ccd\u0cd5abcdefghijklmnopqrstuvwxyz\u0cd6\u0ce0\u0ce1" // E.....F..... + "\u0ce2\u0ce3", /* A.3.8 Malayalam National Language Locking Shift Table 01.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....CD.E.....F.....0.....1 */ " \u0d02\u0d03\u0d05\u0d06\u0d07\u0d08\u0d09\u0d0a\u0d0b\n\u0d0c \r\u0d0e\u0d0f\u0d10 " // 2.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....F..... + "\u0d12\u0d13\u0d14\u0d15\u0d16\u0d17\u0d18\u0d19\u0d1a\uffff\u0d1b\u0d1c\u0d1d\u0d1e" // 012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789ABC + " !\u0d1f\u0d20\u0d21\u0d22\u0d23\u0d24)(\u0d25\u0d26,\u0d27.\u0d280123456789:; " // D.....E.....F0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A..... + "\u0d2a\u0d2b?\u0d2c\u0d2d\u0d2e\u0d2f\u0d30\u0d31\u0d32\u0d33\u0d34\u0d35\u0d36" // B.....C.....D.....EF.....0.....1.....2.....3.....4.....5.....6.....78.....9..... + "\u0d37\u0d38\u0d39 \u0d3d\u0d3e\u0d3f\u0d40\u0d41\u0d42\u0d43\u0d44 \u0d46\u0d47" // A.....BC.....D.....E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D..... + "\u0d48 \u0d4a\u0d4b\u0d4c\u0d4d\u0d57abcdefghijklmnopqrstuvwxyz\u0d60\u0d61\u0d62" // E.....F..... + "\u0d63\u0d79", /* A.3.9 Oriya National Language Locking Shift Table 0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....CD.EF.....0.....12 */ "\u0b01\u0b02\u0b03\u0b05\u0b06\u0b07\u0b08\u0b09\u0b0a\u0b0b\n\u0b0c \r \u0b0f\u0b10 " // 3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....F.....01 + "\u0b13\u0b14\u0b15\u0b16\u0b17\u0b18\u0b19\u0b1a\uffff\u0b1b\u0b1c\u0b1d\u0b1e !" // 2.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789ABCD..... + "\u0b1f\u0b20\u0b21\u0b22\u0b23\u0b24)(\u0b25\u0b26,\u0b27.\u0b280123456789:; \u0b2a" // E.....F0.....1.....2.....3.....4.....56.....7.....89.....A.....B.....C.....D..... + "\u0b2b?\u0b2c\u0b2d\u0b2e\u0b2f\u0b30 \u0b32\u0b33 \u0b35\u0b36\u0b37\u0b38\u0b39" // E.....F.....0.....1.....2.....3.....4.....5.....6.....789.....A.....BCD.....E..... + "\u0b3c\u0b3d\u0b3e\u0b3f\u0b40\u0b41\u0b42\u0b43\u0b44 \u0b47\u0b48 \u0b4b\u0b4c" // F.....0.....123456789ABCDEF0123456789AB.....C.....D.....E.....F..... + "\u0b4d\u0b56abcdefghijklmnopqrstuvwxyz\u0b57\u0b60\u0b61\u0b62\u0b63", /* A.3.10 Punjabi National Language Locking Shift Table 0.....1.....2.....3.....4.....5.....6.....7.....8.....9A.BCD.EF.....0.....123.....4.....*/ "\u0a01\u0a02\u0a03\u0a05\u0a06\u0a07\u0a08\u0a09\u0a0a \n \r \u0a0f\u0a10 \u0a13\u0a14" // 5.....6.....7.....8.....9.....A.....B.....C.....D.....E.....F.....012.....3..... + "\u0a15\u0a16\u0a17\u0a18\u0a19\u0a1a\uffff\u0a1b\u0a1c\u0a1d\u0a1e !\u0a1f\u0a20" // 4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789ABCD.....E.....F0..... + "\u0a21\u0a22\u0a23\u0a24)(\u0a25\u0a26,\u0a27.\u0a280123456789:; \u0a2a\u0a2b?\u0a2c" // 1.....2.....3.....4.....56.....7.....89.....A.....BC.....D.....E.....F0.....1..... + "\u0a2d\u0a2e\u0a2f\u0a30 \u0a32\u0a33 \u0a35\u0a36 \u0a38\u0a39\u0a3c \u0a3e\u0a3f" // 2.....3.....4.....56789.....A.....BCD.....E.....F.....0.....123456789ABCDEF012345678 + "\u0a40\u0a41\u0a42 \u0a47\u0a48 \u0a4b\u0a4c\u0a4d\u0a51abcdefghijklmnopqrstuvwx" // 9AB.....C.....D.....E.....F..... + "yz\u0a70\u0a71\u0a72\u0a73\u0a74", /* A.3.11 Tamil National Language Locking Shift Table 01.....2.....3.....4.....5.....6.....7.....8.....9A.BCD.E.....F.....0.....12.....3..... */ " \u0b82\u0b83\u0b85\u0b86\u0b87\u0b88\u0b89\u0b8a \n \r\u0b8e\u0b8f\u0b90 \u0b92\u0b93" // 4.....5.....6789.....A.....B.....CD.....EF.....012.....3456.....7.....89ABCDEF..... + "\u0b94\u0b95 \u0b99\u0b9a\uffff \u0b9c \u0b9e !\u0b9f \u0ba3\u0ba4)( , .\u0ba8" // 0123456789ABC.....D.....EF012.....3.....4.....5.....6.....7.....8.....9.....A..... + "0123456789:;\u0ba9\u0baa ? \u0bae\u0baf\u0bb0\u0bb1\u0bb2\u0bb3\u0bb4\u0bb5\u0bb6" // B.....C.....D.....EF0.....1.....2.....3.....4.....5678.....9.....A.....BC.....D..... + "\u0bb7\u0bb8\u0bb9 \u0bbe\u0bbf\u0bc0\u0bc1\u0bc2 \u0bc6\u0bc7\u0bc8 \u0bca\u0bcb" // E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D.....E.....F..... + "\u0bcc\u0bcd\u0bd0abcdefghijklmnopqrstuvwxyz\u0bd7\u0bf0\u0bf1\u0bf2\u0bf9", /* A.3.12 Telugu National Language Locking Shift Table 0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....CD.E.....F.....0.....*/ "\u0c01\u0c02\u0c03\u0c05\u0c06\u0c07\u0c08\u0c09\u0c0a\u0c0b\n\u0c0c \r\u0c0e\u0c0f\u0c10" // 12.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D.....E..... + " \u0c12\u0c13\u0c14\u0c15\u0c16\u0c17\u0c18\u0c19\u0c1a\uffff\u0c1b\u0c1c\u0c1d" // F.....012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....0123456789AB + "\u0c1e !\u0c1f\u0c20\u0c21\u0c22\u0c23\u0c24)(\u0c25\u0c26,\u0c27.\u0c280123456789:;" // CD.....E.....F0.....1.....2.....3.....4.....5.....6.....7.....89.....A.....B..... + " \u0c2a\u0c2b?\u0c2c\u0c2d\u0c2e\u0c2f\u0c30\u0c31\u0c32\u0c33 \u0c35\u0c36\u0c37" // C.....D.....EF.....0.....1.....2.....3.....4.....5.....6.....78.....9.....A.....B + "\u0c38\u0c39 \u0c3d\u0c3e\u0c3f\u0c40\u0c41\u0c42\u0c43\u0c44 \u0c46\u0c47\u0c48 " // C.....D.....E.....F.....0.....123456789ABCDEF0123456789AB.....C.....D.....E..... + "\u0c4a\u0c4b\u0c4c\u0c4d\u0c55abcdefghijklmnopqrstuvwxyz\u0c56\u0c60\u0c61\u0c62" // F..... + "\u0c63", /* A.3.13 Urdu National Language Locking Shift Table 0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.B.....C.....D.E.....F.....*/ "\u0627\u0622\u0628\u067b\u0680\u067e\u06a6\u062a\u06c2\u067f\n\u0679\u067d\r\u067a\u067c" // 0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A.....B.....C.....D..... + "\u062b\u062c\u0681\u0684\u0683\u0685\u0686\u0687\u062d\u062e\u062f\uffff\u068c\u0688" // E.....F.....012.....3.....4.....5.....6.....7.....89A.....B.....CD.....EF.....012345 + "\u0689\u068a !\u068f\u068d\u0630\u0631\u0691\u0693)(\u0699\u0632,\u0696.\u0698012345" // 6789ABC.....D.....E.....F0.....1.....2.....3.....4.....5.....6.....7.....8..... + "6789:;\u069a\u0633\u0634?\u0635\u0636\u0637\u0638\u0639\u0641\u0642\u06a9\u06aa" // 9.....A.....B.....C.....D.....E.....F.....0.....1.....2.....3.....4.....5.....6..... + "\u06ab\u06af\u06b3\u06b1\u0644\u0645\u0646\u06ba\u06bb\u06bc\u0648\u06c4\u06d5\u06c1" // 7.....8.....9.....A.....B.....C.....D.....E.....F.....0.....123456789ABCDEF012345678 + "\u06be\u0621\u06cc\u06d0\u06d2\u064d\u0650\u064f\u0657\u0654abcdefghijklmnopqrstuvwx" // 9AB.....C.....D.....E.....F..... + "yz\u0655\u0651\u0653\u0656\u0670" }; /** * GSM default extension table plus national language single shift character tables. */ private static final String[] sLanguageShiftTables = new String[]{ /* 6.2.1.1 GSM 7 bit Default Alphabet Extension Table 0123456789A.....BCDEF0123456789ABCDEF0123456789ABCDEF.0123456789ABCDEF0123456789ABCDEF */ " \u000c ^ {} \\ [~] | " // 0123456789ABCDEF012345.....6789ABCDEF0123456789ABCDEF + " \u20ac ", /* A.2.1 Turkish National Language Single Shift Table 0123456789A.....BCDEF0123456789ABCDEF0123456789ABCDEF.0123456789ABCDEF01234567.....8 */ " \u000c ^ {} \\ [~] | \u011e " // 9.....ABCDEF0123.....456789ABCDEF0123.....45.....67.....89.....ABCDEF0123..... + "\u0130 \u015e \u00e7 \u20ac \u011f \u0131 \u015f" // 456789ABCDEF + " ", /* A.2.2 Spanish National Language Single Shift Table 0123456789.....A.....BCDEF0123456789ABCDEF0123456789ABCDEF.0123456789ABCDEF01.....23 */ " \u00e7\u000c ^ {} \\ [~] |\u00c1 " // 456789.....ABCDEF.....012345.....6789ABCDEF01.....2345.....6789.....ABCDEF.....012 + " \u00cd \u00d3 \u00da \u00e1 \u20ac \u00ed \u00f3 " // 345.....6789ABCDEF + " \u00fa ", /* A.2.3 Portuguese National Language Single Shift Table 012345.....6789.....A.....B.....C.....DE.....F.....012.....3.....45.....6.....7.....8....*/ " \u00ea \u00e7\u000c\u00d4\u00f4 \u00c1\u00e1 \u03a6\u0393^\u03a9\u03a0\u03a8\u03a3" // 9.....ABCDEF.....0123456789ABCDEF.0123456789ABCDEF01.....23456789.....ABCDE + "\u0398 \u00ca {} \\ [~] |\u00c0 \u00cd " // F.....012345.....6789AB.....C.....DEF01.....2345.....6789.....ABCDEF.....01234 + "\u00d3 \u00da \u00c3\u00d5 \u00c2 \u20ac \u00ed \u00f3 " // 5.....6789AB.....C.....DEF..... + "\u00fa \u00e3\u00f5 \u00e2", /* A.2.4 Bengali National Language Single Shift Table 01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */ "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u09e6\u09e7 \u09e8\u09e9" // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C..... + "\u09ea\u09eb\u09ec\u09ed\u09ee\u09ef\u09df\u09e0\u09e1\u09e2{}\u09e3\u09f2\u09f3" // D.....E.....F.0.....1.....2.....3.....4.....56789ABCDEF0123456789ABCDEF + "\u09f4\u09f5\\\u09f6\u09f7\u09f8\u09f9\u09fa [~] |ABCDEFGHIJKLMNO" // 0123456789ABCDEF012345.....6789ABCDEF0123456789ABCDEF + "PQRSTUVWXYZ \u20ac ", /* A.2.5 Gujarati National Language Single Shift Table 01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */ "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0ae6\u0ae7" // E.....F.....0.....1.....2.....3.....4.....5.....6789ABCDEF.0123456789ABCDEF + "\u0ae8\u0ae9\u0aea\u0aeb\u0aec\u0aed\u0aee\u0aef {} \\ [~] " // 0123456789ABCDEF0123456789ABCDEF012345.....6789ABCDEF0123456789ABCDEF + "|ABCDEFGHIJKLMNOPQRSTUVWXYZ \u20ac ", /* A.2.6 Hindi National Language Single Shift Table 01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */ "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0966\u0967" // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C..... + "\u0968\u0969\u096a\u096b\u096c\u096d\u096e\u096f\u0951\u0952{}\u0953\u0954\u0958" // D.....E.....F.0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A..... + "\u0959\u095a\\\u095b\u095c\u095d\u095e\u095f\u0960\u0961\u0962\u0963\u0970\u0971" // BCDEF0123456789ABCDEF0123456789ABCDEF012345.....6789ABCDEF0123456789ABCDEF + " [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ \u20ac ", /* A.2.7 Kannada National Language Single Shift Table 01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */ "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0ce6\u0ce7" // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....BCDEF.01234567 + "\u0ce8\u0ce9\u0cea\u0ceb\u0cec\u0ced\u0cee\u0cef\u0cde\u0cf1{}\u0cf2 \\ " // 89ABCDEF0123456789ABCDEF0123456789ABCDEF012345.....6789ABCDEF0123456789ABCDEF + " [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ \u20ac ", /* A.2.8 Malayalam National Language Single Shift Table 01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */ "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0d66\u0d67" // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C..... + "\u0d68\u0d69\u0d6a\u0d6b\u0d6c\u0d6d\u0d6e\u0d6f\u0d70\u0d71{}\u0d72\u0d73\u0d74" // D.....E.....F.0.....1.....2.....3.....4.....56789ABCDEF0123456789ABCDEF0123456789A + "\u0d75\u0d7a\\\u0d7b\u0d7c\u0d7d\u0d7e\u0d7f [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ" // BCDEF012345.....6789ABCDEF0123456789ABCDEF + " \u20ac ", /* A.2.9 Oriya National Language Single Shift Table 01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */ "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0b66\u0b67" // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C.....DE + "\u0b68\u0b69\u0b6a\u0b6b\u0b6c\u0b6d\u0b6e\u0b6f\u0b5c\u0b5d{}\u0b5f\u0b70\u0b71 " // F.0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF012345.....6789ABCDEF0123456789A + "\\ [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ \u20ac " // BCDEF + " ", /* A.2.10 Punjabi National Language Single Shift Table 01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */ "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0a66\u0a67" // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C..... + "\u0a68\u0a69\u0a6a\u0a6b\u0a6c\u0a6d\u0a6e\u0a6f\u0a59\u0a5a{}\u0a5b\u0a5c\u0a5e" // D.....EF.0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF012345.....6789ABCDEF01 + "\u0a75 \\ [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ \u20ac " // 23456789ABCDEF + " ", /* A.2.11 Tamil National Language Single Shift Table NOTE: TS 23.038 V9.1.1 shows code 0x24 as \u0bef, corrected to \u0bee (typo) 01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */ "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0964\u0965 \u0be6\u0be7" // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C..... + "\u0be8\u0be9\u0bea\u0beb\u0bec\u0bed\u0bee\u0bef\u0bf3\u0bf4{}\u0bf5\u0bf6\u0bf7" // D.....E.....F.0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF012345.....6789ABC + "\u0bf8\u0bfa\\ [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ \u20ac " // DEF0123456789ABCDEF + " ", /* A.2.12 Telugu National Language Single Shift Table NOTE: TS 23.038 V9.1.1 shows code 0x22-0x23 as \u06cc\u06cd, corrected to \u0c6c\u0c6d 01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789ABC.....D.....E.....F..... */ "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#* \u0c66\u0c67\u0c68\u0c69" // 0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C.....D.....E.....F. + "\u0c6a\u0c6b\u0c6c\u0c6d\u0c6e\u0c6f\u0c58\u0c59{}\u0c78\u0c79\u0c7a\u0c7b\u0c7c\\" // 0.....1.....2.....3456789ABCDEF0123456789ABCDEF0123456789ABCDEF012345.....6789ABCD + "\u0c7d\u0c7e\u0c7f [~] |ABCDEFGHIJKLMNOPQRSTUVWXYZ \u20ac " // EF0123456789ABCDEF + " ", /* A.2.13 Urdu National Language Single Shift Table 01.....23.....4.....5.6.....789A.....BCDEF0123.....45.....6789.....A.....BC.....D..... */ "@\u00a3$\u00a5\u00bf\"\u00a4%&'\u000c*+ -/<=>\u00a1^\u00a1_#*\u0600\u0601 \u06f0\u06f1" // E.....F.....0.....1.....2.....3.....4.....5.....6.....7.....89A.....B.....C..... + "\u06f2\u06f3\u06f4\u06f5\u06f6\u06f7\u06f8\u06f9\u060c\u060d{}\u060e\u060f\u0610" // D.....E.....F.0.....1.....2.....3.....4.....5.....6.....7.....8.....9.....A..... + "\u0611\u0612\\\u0613\u0614\u061b\u061f\u0640\u0652\u0658\u066b\u066c\u0672\u0673" // B.....CDEF.....0123456789ABCDEF0123456789ABCDEF012345.....6789ABCDEF0123456789ABCDEF + "\u06cd[~]\u06d4|ABCDEFGHIJKLMNOPQRSTUVWXYZ \u20ac " }; static { Resources r = Resources.getSystem(); // See comments in frameworks/base/core/res/res/values/config.xml for allowed values sEnabledSingleShiftTables = r.getIntArray(R.array.config_sms_enabled_single_shift_tables); sEnabledLockingShiftTables = r.getIntArray(R.array.config_sms_enabled_locking_shift_tables); int numTables = sLanguageTables.length; int numShiftTables = sLanguageShiftTables.length; if (numTables != numShiftTables) { Log.e(TAG, "Error: language tables array length " + numTables + " != shift tables array length " + numShiftTables); } if (sEnabledSingleShiftTables.length > 0) { sHighestEnabledSingleShiftCode = sEnabledSingleShiftTables[sEnabledSingleShiftTables.length-1]; } else { sHighestEnabledSingleShiftCode = 0; } sCharsToGsmTables = new SparseIntArray[numTables]; for (int i = 0; i < numTables; i++) { String table = sLanguageTables[i]; int tableLen = table.length(); if (tableLen != 0 && tableLen != 128) { Log.e(TAG, "Error: language tables index " + i + " length " + tableLen + " (expected 128 or 0)"); } SparseIntArray charToGsmTable = new SparseIntArray(tableLen); sCharsToGsmTables[i] = charToGsmTable; for (int j = 0; j < tableLen; j++) { char c = table.charAt(j); charToGsmTable.put(c, j); } } sCharsToShiftTables = new SparseIntArray[numTables]; for (int i = 0; i < numShiftTables; i++) { String shiftTable = sLanguageShiftTables[i]; int shiftTableLen = shiftTable.length(); if (shiftTableLen != 0 && shiftTableLen != 128) { Log.e(TAG, "Error: language shift tables index " + i + " length " + shiftTableLen + " (expected 128 or 0)"); } SparseIntArray charToShiftTable = new SparseIntArray(shiftTableLen); sCharsToShiftTables[i] = charToShiftTable; for (int j = 0; j < shiftTableLen; j++) { char c = shiftTable.charAt(j); if (c != ' ') { charToShiftTable.put(c, j); } } } } }