function HexCharToBin(HexToken : char): string;
var DivLeft : integer;
begin
DivLeft:=HexCharToInt(HexToken); { first HexChar->Int }
Result:='';
{ Use reverse dividing }
repeat { Trick; divide by 2 }
if Odd(DivLeft) then { result = odd ? then bit = 1 }
Result:='1'+Result { result = even ? then bit = 0 }
else
Result:='0'+Result;
DivLeft:=DivLeft div 2; { keep dividing till 0 left and length = 4 }
until (DivLeft=0) and (length(Result)=4); { 1 token = nibble = 4 bits }
end;
function HexToBin(HexNr : string): string;
{ only stringsize is limit of binnr }
var Counter : integer;
begin
Result:='';
for Counter:=1 to length(HexNr) do
Result:=Result+HexCharToBin(HexNr[Counter]);
end;
function pow(base, power: integer): integer; //指数base^power
var counter : integer;
begin
Result:=1;
for counter:=1 to power do
Result:=Result*base;
end;
function BinStrToInt(BinStr : string) : integer;
var counter : integer;
begin
if length(BinStr)>16 then
raise ERangeError.Create(#13+BinStr+#13+
'不是一个有效的16Bit二进制单元'+#13);
Result:=0;
for counter:=1 to length(BinStr) do
if BinStr[Counter]='1' then
Result:=Result+pow(2,length(BinStr)-counter);
end;
function DecodeSMS7Bit(PDU : string):string;
var OctetStr : string;
OctetBin : string;
Charbin : string;
PrevOctet: string;
Counter : integer;
Counter2 : integer;
begin
PrevOctet:='';
Result:='';
for Counter:=1 to length(PDU) do
begin
if length(PrevOctet)>=7 then { if 7 Bit overflow on previous }
begin
if BinStrToInt(PrevOctet)<>0 then
Result:=Result+Chr(BinStrToInt(PrevOctet))
else Result:=Result+' ';
PrevOctet:='';
end;
if Odd(Counter) then { only take two nibbles at a time }
begin
OctetStr:=Copy(PDU,Counter,2);
OctetBin:=HexToBin(OctetStr);
Charbin:='';
for Counter2:=1 to length(PrevOctet) do
Charbin:=Charbin+PrevOctet[Counter2];
for Counter2:=1 to 7-length(PrevOctet) do
Charbin:=OctetBin[8-Counter2+1]+Charbin;
if BinStrToInt(Charbin)<>0 then Result:=Result+Chr(BinStrToInt(CharBin))
else Result:=Result+' ';
function ReverseStr(SourceStr : string) : string;
var Counter : integer;
begin
Result:='';
for Counter:=1 to length(SourceStr) do
Result:=SourceStr[Counter]+Result;
end;
function GB2UniCode(GB:string):string;
var
s: string;
i, j, k: integer;
a: array [1..160] of char;
begin
s:='';
StringToWideChar(GB, @(a[1]), 500);
i:=1;
while ((a[i]<>#0) or (a[i+1]<>#0)) do begin
j:=Integer(a[i]);
k:=Integer(a[i+1]);
s:=s+Copy(Format('%X ',[k*$100+j+$10000]) ,2,4);
//S := S + Char(k)+Char(j);
i:=i+2;
end;
Result:=s;
end;
function UniCode2GB(S : String):String;
Var I: Integer;
begin
I := Length(S);
while I >=4 do begin
try
Result :=WideChar(StrToInt('$'+S[I-3]+S[I-2]+S[I-1]+S[I]))+ Result;
except end;
I := I - 4;
end;
end;
function Transposition(instr:pchar;Result_str:pchar):Bool;
var
i:integer;
temp:string;
destStr:string;
In_String:string;
begin
if length(instr)>0 then
begin
destStr:='';
In_String:=string(instr);
setlength(In_String,length(In_String));
i:=1;
while i<length(In_String) do
begin
temp:=In_String[i+1]+In_String[i];
destStr:=destStr+temp;
inc(i,2);
end;
StrCopy(Result_Str,pchar(destStr));
result:=true;
end
else
begin
result:=false;
end;
end;
function HexToBin(HexNr : String): String;
function HexCharToInt(HexToken : char): Integer;
function HexCharToBin(HexToken : char): String;
function pow(base, power: integer): integer;
function BinStrToInt(BinStr : String) : Integer;
function DecodeSMS7Bit(PDU : String): String;
function ReverseStr(SourceStr : String) : String;
function GB2UniCode(GB:string): String;
function UniCode2GB(S : String): String;
implementation
uses sysutils, dialogs;
function HexCharToInt(HexToken : char):Integer;
begin
//if HexToken>#97 then HexToken:=Chr(Ord(HexToken)-32);
{ 将小写字母转换成大写 }
Result:=0;
if (HexToken>#47) and (HexToken<#58) then { chars 0....9 }
Result:=Ord(HexToken)-48
else if (HexToken>#64) and (HexToken<#71) then { chars A....F }
Result:=Ord(HexToken)-65 + 10;
end;
function SMSEncode(s:WideString;Result_Code:pchar):Bool;Stdcall;export;
function SMSDecode(Input_Code:pchar;Result_Str:pchar):Bool;Stdcall;export;
function MakePDU(DestNumber:pchar;Content:pchar;Result_String:pchar):Bool;stdcall;export;
function ConvertPhoneNum(strNum:string):string;
function Transposition(instr:pchar;Result_str:pchar):Bool;stdcall;export;//将一个字符串两两交换位置
{ Public declarations }
implementation
function SMSEncode(s:WideString;Result_Code:pchar):Bool;
var
i,len:Integer;
cur:Integer;
t,temp:String;
begin
if length(s)>0 then
begin
len:=Length(s);
i:=1;
while i<=len do
begin
cur:=ord(s[i]);
//BCD convert
FmtStr(t,'%4.4X',[cur]);
temp:=temp+t;
inc(i);
end;
StrCopy(Result_Code,pchar(temp));
Result:=true;
end
else
Result:=false;
end;
function SMSDecode(Input_Code:pchar;Result_Str:pchar):Bool;
var
str:string;
i:integer;
temp:string;
A_PWideChar:array[0..300] of widechar;
R_String:string;
A_integer:integer;
begin
str:=string(Input_Code);
R_String:='';
if length(str)<=0 then
begin
Result:=false;
exit;
end;
i:=0;
while i<length(str) do
begin
temp:=copy(str,i+1,4);
A_integer:=strtoint('$'+temp);
move(A_integer,A_PWideChar[i div 4],sizeof(A_PWideChar[i div 4]));
inc(i,4);
end;
A_PWideChar[length(str) div 4]:=#0;
R_String:=WideCharToString(@A_PWideChar);
StrCopy(Result_Str,pchar(R_String));
Result:=true;
end;
function MakePDU(DestNumber:pchar;Content:pchar;Result_String:pchar):Bool;
const
lenSmsInfo='00';
firstOctet='11';
TPMessageReference='00';
TypeOfAddress='91';
TpId='00';
TpDcs='08';//"00" is 7 bit encode "08" is 8 bit encode;
TPValidityPeriod='AA';//aa is 4 day
var
DestPhoneNum:string;
AddressLength:string;
TpUserData:string;
TPUserDataLength:string;
temp:WideString;
Tmp_Pchar:pchar;
Rlt_str:string;
begin
if (DestNumber='') or (Content='') then
begin
Result:=false;
exit;
end
else
begin
DestPhoneNum:=ConvertPhoneNum(DestNumber);
AddressLength:=format('%2.2X',[length(DestNumber)]);
temp:=Content;
Tmp_Pchar:=StrAlloc(1000);
if SMSEncode(temp,Tmp_Pchar) then
TpUserData:=string(Tmp_Pchar);
if TpDcs='08' then
TPUserDataLength:=format('%2.2X',[length(TpUserData) div 2])
else
TPUserDataLength:=format('%2.2X',[((length(TpUserData) div 2)*8) div 7]);
Rlt_str:=lenSmsInfo
+firstOctet
+TPMessageReference
+AddressLength
+TypeOfAddress
+DestPhoneNum
+TpId
+TpDcs
+TPValidityPeriod
+TPUserDataLength
+TpUserData;//TpUserData have to Encoded;
StrCopy(Result_String,pchar(Rlt_str));
Result:=true;
end;
end;
function ConvertPhoneNum(strNum:string):string;
var
i:integer;
str:string;
A_Pchar:pchar;
begin
str:=strNum;
i:=length(str);
if odd(i) then
begin
str:=str+'F';
A_Pchar:=StrAlloc(40);
if Transposition(pchar(str),A_pchar) then
result:=string(A_Pchar)
else
result:='Null';
end
else
begin
A_Pchar:=StrAlloc(40);
if Transposition(pchar(str),A_pchar) then
result:=string(A_Pchar)
else
result:='Null';
end;
end;