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Mobile phone short information SMS development - code, decoding
1, English code
The default GSM character set is 7-bit encoding, the ASCII code is 8-bit encoding, and the encoding is converted to 7-bit encoding.
For example: 1234 After encoding 31d98c06
2 credit
8-bit codes 00110001 00110010 00110011 00110100
7-bit codes 00110001 11011001 10001100 00000110
As can be seen in an example, the BIT8 encoded by the ASCII8 bit is removed, and the last seven-bit encoding will move to the front, and the new 8-bit encoding is formed.
The following is the implementation code of C Builder:
String __stdcall encodeenglish (String InputStr)
{
INT N, LEN, CUR;
String Tempstr, Returnstr;
Unsigned char mid1 [2], mid2 [2];
Len = INPUTSTR.LENGTH ();
n = 0;
For (INT i = 1; i <= le; i )
{
IF (i { STRCPY (MID1, INPUTSTR.SUBSTRING (I, 1) .c_str ()); STRCPY (MID2, INPUTSTR.SUBSTRING (i 1, 1) .c_str ()); Cur = (MID1 [0] >> N) | ((MID2 [0] << (7-N)) & 0xFF); } Else { STRCPY (MID1, INPUTSTR.SUBSTRING (I, 1) .c_str ()); Cur = (MID1 [0] >> N) & 0x7F; } FMTSTR (Tempstr, "% 2.2X", ArrayOfconst ((CUR))); Returnstr = Returnstr TempStr; n = (n 1)% 7; IF (n == 0) i ; } Return Returnstr; } 2, English decoding Simply put to convert 7-bit character encoding to 8 as character encoding The following is the implementation code of C Builder: int ReturnHex (int value) { Switch (Value) { Case 0: Value = 0x7f; Break; Case 1: Value = 0x3f; Break; Case 2: Value = 0x1f; Break; Case 3: Value = 0x0f; Break; Case 4: Value = 0x07; Break; Case 5: Value = 0x03; Break; Case 6: Value = 0x01; Break; Case 7: Value = 0x00; Break; } Return Value; } String __stdcall decodeenglish (String InputStr) { UNSIGNED CHAR INSTR [300]; Char Outstr [300]; String Str; INT j = 0, i = 0; INT POINT = 0; Int temp; Memset (INSTR, 0, 301); MEMSET (Outstr, 0,301); For (int i = 0; I { Str = "0x" inputstr.substring (i 1, 2); INSTR [I / 2] = STRTOINT (STR); } While (j <= INPUTSTR.LENGTH () / 2) { IF (Point == 0) Outstr [I] = INSTR [J] & ReturnHex (POINT); Else Outstr [I] = ((Instr [J] & Returnhex (POINT)) << Point) | (INSTR [J-1] >> (8-POINT)); IF (Point% 7 == 0 && Point! = 0) POINT = 0; Else Point = POINT 1; i ; J = I- (I / 8); } Outstr [12] = ((INSTR [12] & 0x07) << 5) | (INSTR [11] >> (8-5)); Return Ansistring (Outstr); } 3, Chinese code Chinese coding is simpler, that is, convert GB2312 Chinese code to the code page as Unicode encoding of CP936. The following is the implementation code of C Builder String EncodeChinese (String InputStr) { Int Cur; String Tempstr, Returnstr; WiDESTRING WS; Wchar_t MID [2]; WS = WIDESTRING (InputStr); For (INT i = 1; i <= ws.length (); i ) { WCSCPY (MID, WS.SUBSTRING (I, 1) .c_bstr ()); Cur = MID [0]; FMTSTR (Tempstr, "% 4.4X", ArrayOfconst ((CUR)); Returnstr = Returnstr TempStr; } Return Returnstr; } 4, Chinese decoding Convert the code page for the Unicode encoding of the CP936 to GB2312. The following is the implementation code of C Builder String Decodeinese (String InputStr) { Wchar_t buf [300]; For (int i = 0; I { BUF [I / 4] = StrtOINT ("0x" InputStr.Substring (i 1, 4)); } BUF [InputStr.Length () / 4] = 0; Return Widechartostring (BUF); } Mobile phone short information SMS development - code, decoding 1, English code The default GSM character set is 7-bit encoding, the ASCII code is 8-bit encoding, and the encoding is converted to 7-bit encoding. For example: 1234 After encoding 31d98c06 2 credit 8-bit codes 00110001 00110010 00110011 00110100 7-bit codes 00110001 11011001 10001100 00000110 As can be seen in an example, the BIT8 encoded by the ASCII8 bit is removed, and the last seven-bit encoding will move to the front, and the new 8-bit encoding is formed. The following is the implementation code of C Builder: String __stdcall encodeenglish (String InputStr) { INT N, LEN, CUR; String Tempstr, Returnstr; Unsigned Char MID1 [2], MID2 [2]; Len = INPUTSTR.LENGTH (); n = 0; For (INT i = 1; i <= le; i ) { IF (i { STRCPY (MID1, INPUTSTR.SUBSTRING (I, 1) .c_str ()); STRCPY (MID2, INPUTSTR.SUBSTRING (i 1, 1) .c_str ()); Cur = (MID1 [0] >> N) | ((MID2 [0] << (7-N)) & 0xFF); } Else { STRCPY (MID1, INPUTSTR.SUBSTRING (I, 1) .c_str ()); Cur = (MID1 [0] >> N) & 0x7F; } FMTSTR (Tempstr, "% 2.2X", ArrayOfconst ((CUR))); Returnstr = Returnstr TempStr; n = (n 1)% 7; IF (n == 0) i ; } Return Returnstr; } 2, English decoding Simply put to convert 7-bit character encoding to 8 as character encoding The following is the implementation code of C Builder: int ReturnHex (int value) { Switch (Value) { Case 0: Value = 0x7f; Break; Case 1: Value = 0x3f; Break; Case 2: Value = 0x1f; Break; Case 3: Value = 0x0f; Break; Case 4: Value = 0x07; Break; Case 5: Value = 0x03; Break; Case 6: Value = 0x01; Break; Case 7: Value = 0x00; Break; } Return Value; } String __stdcall decodeenglish (String InputStr) { UNSIGNED CHAR INSTR [300]; Char Outstr [300]; String Str; INT j = 0, i = 0; INT POINT = 0; Int temp; Memset (INSTR, 0, 301); MEMSET (Outstr, 0,301); For (int i = 0; I { Str = "0x" InputStr.Substring (i 1, 2); INSTR [I / 2] = STRTOINT (STR); } While (j <= INPUTSTR.LENGTH () / 2) { IF (Point == 0) Outstr [I] = INSTR [J] & ReturnHex (POINT); Else Outstr [I] = ((Instr [J] & Returnhex (POINT)) << Point) | (INSTR [J-1] >> (8-POINT)); IF (Point% 7 == 0 && Point! = 0) POINT = 0; Else Point = POINT 1; i ; J = I- (I / 8); } Outstr [12] = ((INSTR [12] & 0x07) << 5) | (INSTR [11] >> (8-5)); Return Ansistring (Outstr); } 3, Chinese code Chinese coding is simpler, that is, convert GB2312 Chinese code to the code page as Unicode encoding of CP936. The following is the implementation code of C Builder String EncodeChinese (String InputStr) { Int Cur; String Tempstr, Returnstr; WiDESTRING WS; Wchar_t MID [2]; WS = WIDESTRING (InputStr); For (INT i = 1; i <= ws.length (); i ) { WCSCPY (MID, WS.SUBSTRING (I, 1) .c_bstr ()); Cur = MID [0]; FMTSTR (Tempstr, "% 4.4X", ArrayOfconst ((CUR)); Returnstr = Returnstr TempStr; } Return Returnstr; } 4, Chinese decoding Convert the code page for the Unicode encoding of the CP936 to GB2312. The following is the implementation code of C Builder String Decodeinese (String InputStr) { Wchar_t buf [300]; For (int i = 0; I { BUF [I / 4] = StrtOINT ("0x" InputStr.Substring (i 1, 4)); } BUF [InputStr.Length () / 4] = 0; Return Widechartostring (BUF); }
