Version
GSMCharset
public class GSMCharset
extends:
java.nio.charset.Charset
Implements:
Comparable<Charset>
GSMCharset is a specialized implementation of java.nio.charset.Charset designed to handle GSM 7-bit encoding, used in SMS transmission. It includes logic for character validation, encoding length estimation, and message slicing based on GSM character set rules.
Fields:
ESCAPE, GSM_CANONICAL_NAME
Constructors:
public GSMCharset(String canonicalName, String[] aliases)
Initializes the charset using only name and aliases.
public GSMCharset(String canonicalName, String[] aliases, int[] mainTable, int[] extentionTable)
Initializes the charset using name, aliases, and both encoding tables (main and extended).
Methods:
| boolean contains(Charset cs) | Indicates whether the given charset is a subset of GSMCharset. |
| CharsetDecoder newDecoder() | Creates a new decoder for this charset. |
| CharsetEncoder newEncoder() | Creates a new encoder for this charset. |
| boolean checkAllCharsCanBeEncoded(String data) | Returns true if all characters in the string are present in the main or extension GSM7 tables. |
| static boolean checkAllCharsCanBeEncoded(String data, int[] mainTable, int[] extentionTable) | Same as above, with custom tables. |
| int checkEncodedDataLengthInChars(String data) | Returns the character count (septets) for the GSM7-encoded form of the input string. Extension chars count as two. |
| static int checkEncodedDataLengthInChars(String data, int[] mainTable, int[] extentionTable) | Same as above, with custom tables. |
| static int septetsToOctets(int septCnt) | Converts a number of septets (7-bit units) into the number of octets (8-bit bytes) needed to store them. |
| static int octetsToSeptets(int byteCnt) | Converts a number of octets into the number of septets they can represent. |
| String[] sliceString(String data, int charCount) | Splits the input string into chunks that fit the given septet character limit. |
| static String[] sliceString(String data, int charCount, int[] mainTable, int[] extentionTable) | Same as above, using custom encoding tables. |
Methods inherited from class java.nio.charset.Charset |
|
| aliases, availableCharsets, canEncode, compareTo, decode, defaultCharset, displayName, displayName, encode, encode, equals, forName, hashCode, isRegistered, isSupported, name, toString | |
Methods inherited from class java.lang.Object |
|
| getClass, notify, notifyAll, wait, wait, wait | |
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