usc2.pas

来自「Unicode到AnsiString的转换工具。在短信开发过程中」· PAS 代码 · 共 65 行

unit usc2;

interface


uses
  Windows, Messages, SysUtils;

function UnicodeToAnsi(Unicode: string):string;
function AnsiToUnicode(Ansi: string):string;

implementation

function ReadHex(AString:string):integer;
begin
  Result:=StrToInt('$'+AString)
end;


function UnicodeToAnsi(Unicode: string):string;
var
  s:string;
  i:integer;
  j,k:string[2];
begin
  i:=1;
  s:='';
  while i<Length(Unicode)+1 do
  begin
    j:=Copy(Unicode,i+2,2);
    k:=Copy(Unicode,i,2);
    i:=i+4;
    s:=s+Char(ReadHex(j))+Char(ReadHex(k));
  end;

  if s<>'' then
    s:=WideCharToString(PWideChar(s+#0#0#0#0))
  else
    s:='';
  Result:=s;
end;

function AnsiToUnicode(Ansi: string):string;
var
  s:string;
  i:integer;
  j,k:string[2];
  a:array [1..1000] of char;
begin

  s:='';
  StringToWideChar(Ansi,@(a[1]),500);
  i:=1;
  while ((a[i]<>#0) or (a[i+1]<>#0)) do
  begin
    j:=IntToHex(Integer(a[i]),2);
    k:=IntToHex(Integer(a[i+1]),2);
    s:=s+k+j;
    i:=i+2;
  end;
  Result:=s;
end;

end.