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{
This file is part of the Free Pascal run time library.
Copyright (c) 2011 by Francesco Lombardi.
System unit for Nintendo Wii
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
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.
**********************************************************************}
unit System;
interface
{$define FPC_IS_SYSTEM}
{$define HAS_CMDLINE}
{$define FPC_HAS_FEATURE_THREADING}
{$define FPC_HAS_FEATURE_CONSOLEIO}
{$define FPC_HAS_FEATURE_COMMANDARGS}
{$define FPC_HAS_FEATURE_TEXTIO}
{$define FPC_HAS_FEATURE_FILEIO}
{$i systemh.inc}
{$i libch.inc}
{$i wiih.inc}
const
LineEnding = #10;
LFNSupport = true;
DirectorySeparator = '/';
DriveSeparator = ':';
ExtensionSeparator = '.';
PathSeparator = ':';
AllowDirectorySeparators : set of char = ['\','/'];
AllowDriveSeparators : set of char = [':'];
maxExitCode = 255;
MaxPathLen = 1024; // BSDs since 1993, Solaris 10, Darwin
AllFilesMask = '*';
UnusedHandle = -1;
StdInputHandle = 0;
StdOutputHandle = 1;
StdErrorHandle = 2;
FileNameCaseSensitive : boolean = true;
FileNameCasePreserving: boolean = true;
CtrlZMarksEOF: boolean = true; (* #26 not considered as end of file *)
sLineBreak = LineEnding;
DefaultTextLineBreakStyle : TTextLineBreakStyle = tlbsLF;
var
argc: LongInt = 0;
argv: PPChar;
envp: PPChar;
// errno: integer;
function get_cmdline:Pchar;
property cmdline:Pchar read get_cmdline;
implementation
const
calculated_cmdline: Pchar = nil;
{ System limits, POSIX value in parentheses, used for buffer and stack allocation }
ARG_MAX = 65536; {4096} { Maximum number of argument size }
PATH_MAX = 1024; {255} { Maximum number of bytes in pathname }
{$i system.inc}
{$i libc.inc}
{$i wii.inc}
{$ifdef FPC_HAS_FEATURE_PROCESSES}
function GetProcessID: SizeUInt;
begin
GetProcessID := 0;
end;
{$endif}
{*****************************************************************************
Misc. System Dependent Functions
*****************************************************************************}
procedure System_exit;
begin
// Boo!
end;
{*****************************************************************************
ParamStr/Randomize
*****************************************************************************}
const
QRAN_SHIFT = 15;
QRAN_MASK = ((1 shl QRAN_SHIFT) - 1);
QRAN_MAX = QRAN_MASK;
QRAN_A = 1664525;
QRAN_C = 1013904223;
{ set randseed to a new pseudo random value }
procedure randomize;
begin
end;
function random(): integer;
begin
RandSeed := QRAN_A * RandSeed + QRAN_C;
random := (RandSeed shr 16) and QRAN_MAX;
end;
function random(value: integer): integer;
var
a: integer;
begin
RandSeed := QRAN_A * RandSeed + QRAN_C;
a := (RandSeed shr 16) and QRAN_MAX;
random := (a * value) shr 15;
end;
Function ParamCount: Longint;
Begin
Paramcount:=argc-1
End;
{ variable where full path and filename and executable is stored }
{ is setup by the startup of the system unit. }
var
execpathstr : shortstring;
function paramstr(l: longint) : string;
begin
{ stricly conforming POSIX applications }
{ have the executing filename as argv[0] }
if l=0 then
begin
paramstr := execpathstr;
end
else
paramstr:=strpas(argv[l]);
end;
{*****************************************************************************
cmdline
*****************************************************************************}
procedure SetupCmdLine;
var
bufsize,
len,j,
size,i : longint;
found : boolean;
buf : pchar;
procedure AddBuf;
begin
reallocmem(calculated_cmdline,size+bufsize);
move(buf^,calculated_cmdline[size],bufsize);
inc(size,bufsize);
bufsize:=0;
end;
begin
if argc<=0 then
exit;
GetMem(buf,ARG_MAX);
size:=0;
bufsize:=0;
i:=0;
while (i<argc) do
begin
len:=strlen(argv[i]);
if len>ARG_MAX-2 then
len:=ARG_MAX-2;
found:=false;
for j:=1 to len do
if argv[i][j]=' ' then
begin
found:=true;
break;
end;
if bufsize+len>=ARG_MAX-2 then
AddBuf;
if found then
begin
buf[bufsize]:='"';
inc(bufsize);
end;
move(argv[i]^,buf[bufsize],len);
inc(bufsize,len);
if found then
begin
buf[bufsize]:='"';
inc(bufsize);
end;
if i<argc-1 then
buf[bufsize]:=' '
else
buf[bufsize]:=#0;
inc(bufsize);
inc(i);
end;
AddBuf;
FreeMem(buf,ARG_MAX);
end;
function get_cmdline:Pchar;
begin
if calculated_cmdline=nil then
setupcmdline;
get_cmdline:=calculated_cmdline;
end;
procedure SysInitStdIO;
begin
OpenStdIO(Input,fmInput,0);
OpenStdIO(Output,fmOutput,0);
OpenStdIO(ErrOutput,fmOutput,0);
OpenStdIO(StdOut,fmOutput,0);
OpenStdIO(StdErr,fmOutput,0);
end;
function CheckInitialStkLen(stklen : SizeUInt) : SizeUInt;
begin
result := stklen;
end;
begin
StackLength := CheckInitialStkLen(InitialStkLen);
StackBottom := Sptr - StackLength;
{ OS specific startup }
{ Set up signals handlers }
// fpc_cpucodeinit;
{ Setup heap }
InitHeap;
SysInitExceptions;
SetupCmdLine;
{$ifdef FPC_HAS_FEATURE_CONSOLEIO}
{ Setup stdin, stdout and stderr }
SysInitStdIO;
{ Reset IO Error }
InOutRes:=0;
{$endif FPC_HAS_FEATURE_CONSOLEIO}
{ Arguments }
{$ifdef FPC_HAS_FEATURE_THREADING}
{ threading }
InitSystemThreads;
{$endif FPC_HAS_FEATURE_THREADING}
initvariantmanager;
end.
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