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utils.api.cstring.pas
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131 lines (111 loc) · 4.27 KB
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(******************************************************************************)
(* PascalUtils *)
(* delphi and object pascal library of utils data structures *)
(* *)
(* Copyright (c) 2021 Ivan Semenkov *)
(* https://github.com/isemenkov/pascalutils ivan@semenkov.pro *)
(* Ukraine *)
(******************************************************************************)
(* *)
(* Permission is hereby granted, free of charge, to any person obtaining a *)
(* copy of this software and associated documentation files (the "Software"), *)
(* to deal in the Software without restriction, including without limitation *)
(* the rights to use, copy, modify, merge, publish, distribute, sublicense, *)
(* and/or sell copies of the Software, and to permit persons to whom the *)
(* Software is furnished to do so, subject to the following conditions: *)
(* *)
(* The above copyright notice and this permission notice shall be included in *)
(* all copies or substantial portions of the Software. *)
(* *)
(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *)
(* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *)
(* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *)
(* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *)
(* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *)
(* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *)
(* DEALINGS IN THE SOFTWARE. *)
(* *)
(******************************************************************************)
unit utils.api.cstring;
{$IFDEF FPC}
{$mode objfpc}{$H+}
{$ENDIF}
{$IFOPT D+}
{$DEFINE DEBUG}
{$ENDIF}
interface
uses
SysUtils {$IFNDEF FPC}, System.AnsiStrings{$ENDIF};
type
API = class
public
type
PAnsiStringWrapper = class
public
constructor Create (AString : PAnsiChar; ALength : Cardinal);
destructor Destroy; override;
protected
FAnsiString : PAnsiChar;
FLength : Cardinal;
public
property Value : PAnsiChar read FAnsiString;
property Length : Cardinal read FLength;
end;
CString = class
public
constructor Create; overload;
constructor Create (AString : String); overload;
constructor Create (AString : PAnsiChar); overload;
function ToString : String; override;
function ToPAnsiChar : PAnsiChar;
function ToUniquePAnsiChar : PAnsiStringWrapper;
function Length : Integer;
protected
FString : String;
end;
end;
implementation
{ API.PAnsiStringWrapper }
constructor API.PAnsiStringWrapper.Create (AString : PAnsiChar; ALength :
Cardinal);
begin
FAnsiString := AString;
FLength := ALength;
end;
destructor API.PAnsiStringWrapper.Destroy;
begin
{$IFNDEF FPC}System.AnsiStrings.{$ENDIF}StrDispose(FAnsiString);
end;
{ API.CString }
constructor API.CString.Create;
begin
FString := '';
end;
constructor API.CString.Create (AString : String);
begin
FString := AString;
end;
constructor API.CString.Create (AString : PAnsiChar);
begin
FString := String(Utf8ToString(AString));
end;
function API.CString.ToString : String;
begin
Result := FString;
end;
function API.CString.ToPAnsiChar : PAnsiChar;
begin
Result := PAnsiChar({$IFNDEF FPC}Utf8Encode{$ENDIF}(FString));
end;
function API.CString.ToUniquePAnsiChar : PAnsiStringWrapper;
begin
Result := PAnsiStringWrapper.Create(
{$IFNDEF FPC}System.AnsiStrings.{$ENDIF}StrNew(ToPAnsiChar),
System.Length(FString)
);
end;
function API.CString.Length : Integer;
begin
Result := System.Length(FString);
end;
end.