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d_delphi.pas
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d_delphi.pas
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//------------------------------------------------------------------------------
//
// DoomXS - A basic Windows source port of Doom
// based on original Linux Doom as published by "id Software"
// Copyright (C) 1993-1996 by id Software, Inc.
// Copyright (C) 2021-2022 by Jim Valavanis
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, inc., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
//
//------------------------------------------------------------------------------
// Site: https://sourceforge.net/projects/doomxs/
//------------------------------------------------------------------------------
unit d_delphi;
interface
const
MAXSHORT = smallint($7fff);
MINSHORT = smallint($8000);
MAXINT = longint($7fffffff);
MININT = longint($80000000);
type
PPointer = ^Pointer;
PString = ^string;
PBoolean = ^boolean;
PInteger = ^integer;
PLongWord = ^LongWord;
TWordArray = packed array[0..$FFFF] of word;
PWordArray = ^TWordArray;
TIntegerArray = packed array[0..$FFFF] of integer;
PIntegerArray = ^TIntegerArray;
TLongWordArray = packed array[0..$FFFF] of LongWord;
PLongWordArray = ^TLongWordArray;
TSmallintArray = packed array[0..$FFFF] of smallint;
PSmallintArray = ^TSmallintArray;
TByteArray = packed array[0..$FFFF] of byte;
PByteArray = ^TByteArray;
TBooleanArray = packed array[0..$FFFF] of boolean;
PBooleanArray = ^TBooleanArray;
PProcedure = procedure;
TStringArray = array[0..$FFFF] of string;
PStringArray = ^TStringArray;
TPointerArray = packed array[0..$FFFF] of pointer;
PPointerArray = ^TPointerArray;
PSmallInt = ^smallint;
TSmallIntPArray = packed array[0..$FFFF] of PSmallIntArray;
PSmallIntPArray = ^TSmallIntPArray;
PWord = ^word;
TWordPArray = packed array[0..$FFFF] of PWordArray;
PWordPArray = ^TWordPArray;
PByte = ^byte;
TBytePArray = packed array[0..$FFFF] of PByteArray;
PBytePArray = ^TBytePArray;
TOutProc = procedure(const s: string);
var
outproc: TOutProc = nil;
procedure sprintf(var s: string; const Fmt: string; const Args: array of const);
procedure printf(const str: string); overload;
procedure printf(const Fmt: string; const Args: array of const); overload;
function itoa(i: integer): string;
function atoi(const s: string): integer;
function memcpy(dst: pointer; const src: pointer; len: integer): pointer;
function malloc(size: integer): Pointer;
function IntToStrZfill(const z: integer; const x: integer): string;
function intval(const b: boolean): integer;
function decide(const contition: boolean; const iftrue: integer;
const iffalse: integer): integer;
function incp(var p: pointer; const size: integer = 1): pointer;
function pOperation(const p1, p2: pointer; const op: char; size: integer): integer;
function getenv(const env: string): string;
function fexists(const filename: string): boolean;
procedure fdelete(const filename: string);
function fext(const filename: string): string;
const
fOpen = 0;
fCreate = 1;
sFromBeginning = 0;
sFromCurrent = 1;
sFromEnd = 2;
type
TFile = class
public
f: file;
constructor Create(const FileName: string; mode: word);
destructor Destroy; override;
function Read(var Buffer; Count: longint): longint; virtual;
function Write(const Buffer; Count: longint): longint; virtual;
function Seek(Offset: longint; Origin: word): longint; virtual;
function Size: longint;
end;
type
strlistitem_t = string[255];
strlist_t = array[0..$FFF] of strlistitem_t;
Pstrlist_t = ^strlist_t;
TStrList = class
private
flist: Pstrlist_t;
fcount: integer;
public
constructor Create; virtual;
destructor Destroy; override;
procedure Clear;
procedure Add(const s: string);
procedure AppendText(const s: string);
procedure LoadFromFile(const fname: string);
procedure SaveToFile(const fname: string);
function Strings(const i: integer): string;
function Names(const i: integer): string;
function Values(const i: integer): string;
property Count: integer read fcount;
end;
procedure fprintf(var f: file; const str: string); overload;
procedure fprintf(var f: file; const Fmt: string; const Args: array of const); overload;
procedure fprintf(var f: TFile; const str: string); overload;
procedure fprintf(var f: TFile; const Fmt: string; const Args: array of const); overload;
function ftan(const X: Extended): Extended;
function strupper(const S: string): string;
function toupper(ch: char): char;
function tolower(ch: char): char;
function _SHL(const x: integer; const bits: integer): integer;
function _SHLW(const x: LongWord; const bits: LongWord): LongWord;
function _SHR(const x: integer; const bits: integer): integer;
function StringVal(const Str: PChar): string;
procedure ZeroMemory(const P: Pointer; Count: integer);
implementation
uses
Windows,
SysUtils;
procedure sprintf(var s: string; const Fmt: string; const Args: array of const);
begin
s := Format(Fmt, Args);
end;
procedure printf(const str: string);
begin
if Assigned(outproc) then
outproc(str)
else if IsConsole then
Write(str);
end;
procedure printf(const Fmt: string; const Args: array of const);
var
s: string;
begin
sprintf(s, Fmt, Args);
printf(s);
end;
procedure fprintf(var f: file; const str: string);
begin
BlockWrite(f, (@str[1])^, Length(str));
end;
procedure fprintf(var f: file; const Fmt: string; const Args: array of const);
var
s: string;
begin
sprintf(s, Fmt, Args);
fprintf(f, s);
end;
procedure fprintf(var f: TFile; const str: string);
begin
fprintf(f.f, str);
end;
procedure fprintf(var f: TFile; const Fmt: string; const Args: array of const);
begin
fprintf(f.f, Fmt, Args);
end;
function itoa(i: integer): string;
begin
Result := IntToStr(i);
end;
function atoi(const s: string): integer;
begin
Result := StrToIntDef(s, 0);
end;
function memcpy(dst: pointer; const src: pointer; len: integer): pointer;
begin
move(src^, dst^, len);
Result := dst;
end;
function malloc(size: integer): Pointer;
begin
GetMem(Result, size);
ZeroMemory(Result, size);
end;
function IntToStrZfill(const z: integer; const x: integer): string;
var
i: integer;
len: integer;
begin
Result := IntToStr(x);
len := Length(Result);
for i := len + 1 to z do
Result := '0' + Result;
end;
function intval(const b: boolean): integer;
begin
if b then
Result := 1
else
Result := 0;
end;
function decide(const contition: boolean; const iftrue: integer;
const iffalse: integer): integer;
begin
if contition then
Result := iftrue
else
Result := iffalse;
end;
function incp(var p: pointer; const size: integer = 1): pointer;
begin
Result := Pointer(integer(p) + size);
p := Result;
end;
function pOperation(const p1, p2: pointer; const op: char; size: integer): integer;
begin
case op of
'+': Result := (integer(p1) + integer(p2)) div size;
'-': Result := (integer(p1) - integer(p2)) div size;
else
Result := 0;
end;
end;
////////////////////////////////////////////////////////////////////////////////
constructor TFile.Create(const FileName: string; mode: word);
begin
Assign(f, FileName);
{$I-}
if mode = fCreate then
rewrite(f, 1)
else
reset(f, 1);
{$I+}
end;
destructor TFile.Destroy;
begin
Close(f);
inherited;
end;
function TFile.Read(var Buffer; Count: longint): longint;
begin
BlockRead(f, Buffer, Count, Result);
end;
function TFile.Write(const Buffer; Count: longint): longint;
begin
BlockWrite(f, Buffer, Count, Result);
end;
function TFile.Seek(Offset: longint; Origin: word): longint;
begin
case Origin of
sFromBeginning:
Result := Offset;
sFromCurrent:
Result := FilePos(f) + Offset;
sFromEnd:
Result := FileSize(f) - Offset;
else
Result := 0;
end;
system.Seek(f, Result);
end;
function TFile.Size: longint;
begin
Result := FileSize(f);
end;
constructor TStrList.Create;
begin
flist := nil;
fcount := 0;
end;
destructor TStrList.Destroy;
begin
Clear;
Inherited;
end;
procedure TStrList.Clear;
begin
if flist <> nil then
FreeMem(flist);
fcount := 0;
end;
procedure TStrList.Add(const s: string);
begin
ReAllocMem(flist, (fcount + 1) * SizeOf(strlistitem_t));
flist[fcount] := s;
inc(fcount);
end;
procedure TStrList.AppendText(const s: string);
var
s1: string;
i: integer;
begin
s1 := '';
for i := 1 to Length(s) do
begin
if s[i] = #10 then
begin
Add(s1);
s1 := '';
end
else if s[i] <> #13 then
s1 := s1 + s[i];
end;
if s1 <> '' then
Add(s1);
end;
procedure TStrList.LoadFromFile(const fname: string);
var
t: textfile;
s: string;
begin
assignfile(t, fname);
reset(t);
while not EOF(t) do
begin
readln(t, s);
Add(s);
end;
closefile(t);
end;
procedure TStrList.SaveToFile(const fname: string);
var
t: textfile;
i: integer;
begin
assignfile(t, fname);
rewrite(t);
for i := 0 to fcount - 1 do
writeln(t, flist[i]);
closefile(t);
end;
function TStrList.Strings(const i: integer): string;
begin
if i >= 0 then
if i < fcount then
begin
Result := flist[i];
Exit;
end;
Result := '';
end;
function TStrList.Names(const i: integer): string;
var
p: integer;
begin
if i >= 0 then
if i < fcount then
begin
Result := flist[i];
p := Pos('=', Result);
if p > 0 then
SetLength(Result, p - 1);
Exit;
end;
Result := '';
end;
function TStrList.Values(const i: integer): string;
var
s: string;
p: integer;
begin
Result := '';
if i >= 0 then
if i < fcount then
begin
s := flist[i];
p := Pos('=', s);
if p > 0 then
begin
inc(p);
while p <= Length(s) do
begin
Result := Result + s[p];
inc(p);
end;
end;
end;
end;
{$IFDEF FPC}function GetEnvironmentVariable(lpName: PChar; lpBuffer: PChar; nSize: DWORD): DWORD; stdcall; external 'kernel32.dll' name 'GetEnvironmentVariableA';{$ENDIF}
function getenv(const env: string): string;
var
buf: array[0..2047] of char;
begin
ZeroMemory(@buf, SizeOf(buf));
GetEnvironmentVariable(PChar(env), buf, 2047);
Result := Trim(StringVal(buf));
end;
function fexists(const filename: string): boolean;
begin
Result := FileExists(filename);
end;
procedure fdelete(const filename: string);
begin
if fexists(filename) then
DeleteFile(filename);
end;
function fext(const filename: string): string;
begin
Result := ExtractFileExt(filename);
end;
function ftan(const X: Extended): Extended;
asm
FLD X
FPTAN
FSTP ST(0)
FWAIT
end;
function strupper(const S: string): string;
var
Ch: char;
L: integer;
Source, Dest: PChar;
begin
L := Length(S);
SetLength(Result, L);
Source := Pointer(S);
Dest := Pointer(Result);
while L <> 0 do
begin
Ch := Source^;
if (Ch >= 'a') and (Ch <= 'z') then
Dec(Ch, 32);
Dest^ := Ch;
Inc(Source);
Inc(Dest);
Dec(L);
end;
end;
function toupper(ch: char): char;
asm
CMP AL,'a'
JB @@Exit
CMP AL,'z'
JA @@Exit
SUB AL,'a' - 'A'
@@Exit:
end;
function tolower(ch: char): char;
asm
CMP AL,'A'
JB @@Exit
CMP AL,'Z'
JA @@Exit
SUB AL,'A' - 'a'
@@Exit:
end;
function _SHL(const x: integer; const bits: integer): integer; assembler;
asm
mov ecx, edx
sal eax, cl
end;
function _SHLW(const x: LongWord; const bits: LongWord): LongWord;
begin
Result := x shl bits;
end;
function _SHR(const x: integer; const bits: integer): integer; assembler;
asm
mov ecx, edx
sar eax, cl
end;
function StringVal(const Str: PChar): string;
begin
Result := Str;
end;
procedure ZeroMemory(const P: Pointer; Count: integer);
begin
FillChar(P^, Count, Chr(0));
end;
end.