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fpc/rtl/go32v2/dos.pp
Tomas Hajny d5e9273b9b * universal FExpand
2001-03-16 20:09:58 +00:00

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{
$Id$
This file is part of the Free Pascal run time library.
Copyright (c) 1999-2000 by the Free Pascal development team.
Dos unit for BP7 compatible RTL
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 dos;
interface
Uses
Go32;
Const
{Bitmasks for CPU Flags}
fcarry = $0001;
fparity = $0004;
fauxiliary = $0010;
fzero = $0040;
fsign = $0080;
foverflow = $0800;
{Bitmasks for file attribute}
readonly = $01;
hidden = $02;
sysfile = $04;
volumeid = $08;
directory = $10;
archive = $20;
anyfile = $3F;
{File Status}
fmclosed = $D7B0;
fminput = $D7B1;
fmoutput = $D7B2;
fminout = $D7B3;
Type
{ Needed for LFN Support }
ComStr = String[255];
PathStr = String[255];
DirStr = String[255];
NameStr = String[255];
ExtStr = String[255];
{
filerec.inc contains the definition of the filerec.
textrec.inc contains the definition of the textrec.
It is in a separate file to make it available in other units without
having to use the DOS unit for it.
}
{$i filerec.inc}
{$i textrec.inc}
DateTime = packed record
Year,
Month,
Day,
Hour,
Min,
Sec : word;
End;
searchrec = packed record
fill : array[1..21] of byte;
attr : byte;
time : longint;
{ reserved : word; not in DJGPP V2 }
size : longint;
name : string[255]; { LFN Name, DJGPP uses only [12] but more can't hurt (PFV) }
end;
Registers = Go32.Registers;
Var
DosError : integer;
{Interrupt}
Procedure Intr(intno: byte; var regs: registers);
Procedure MSDos(var regs: registers);
{Info/Date/Time}
Function DosVersion: Word;
Procedure GetDate(var year, month, mday, wday: word);
Procedure GetTime(var hour, minute, second, sec100: word);
procedure SetDate(year,month,day: word);
Procedure SetTime(hour,minute,second,sec100: word);
Procedure UnpackTime(p: longint; var t: datetime);
Procedure PackTime(var t: datetime; var p: longint);
{Exec}
Procedure Exec(const path: pathstr; const comline: comstr);
Function DosExitCode: word;
{Disk}
Function DiskFree(drive: byte) : int64;
Function DiskSize(drive: byte) : int64;
Procedure FindFirst(const path: pathstr; attr: word; var f: searchRec);
Procedure FindNext(var f: searchRec);
Procedure FindClose(Var f: SearchRec);
{File}
Procedure GetFAttr(var f; var attr: word);
Procedure GetFTime(var f; var time: longint);
Function FSearch(path: pathstr; dirlist: string): pathstr;
Function FExpand(const path: pathstr): pathstr;
Procedure FSplit(path: pathstr; var dir: dirstr; var name: namestr; var ext: extstr);
function GetShortName(var p : String) : boolean;
function GetLongName(var p : String) : boolean;
{Environment}
Function EnvCount: longint;
Function EnvStr(index: integer): string;
Function GetEnv(envvar: string): string;
{Misc}
Procedure SetFAttr(var f; attr: word);
Procedure SetFTime(var f; time: longint);
Procedure GetCBreak(var breakvalue: boolean);
Procedure SetCBreak(breakvalue: boolean);
Procedure GetVerify(var verify: boolean);
Procedure SetVerify(verify: boolean);
{Do Nothing Functions}
Procedure SwapVectors;
Procedure GetIntVec(intno: byte; var vector: pointer);
Procedure SetIntVec(intno: byte; vector: pointer);
Procedure Keep(exitcode: word);
implementation
uses
strings;
{$ASMMODE ATT}
{******************************************************************************
--- Dos Interrupt ---
******************************************************************************}
var
dosregs : registers;
procedure LoadDosError;
var
r : registers;
SimpleDosError : word;
begin
if (dosregs.flags and carryflag) <> 0 then
begin
{ I got a extended error = 0
while CarryFlag was set from Exec function }
SimpleDosError:=dosregs.ax;
r.eax:=$5900;
r.ebx:=$0;
realintr($21,r);
{ conversion from word to integer !!
gave a Bound check error if ax is $FFFF !! PM }
doserror:=integer(r.ax);
case doserror of
0 : DosError:=integer(SimpleDosError);
19 : DosError:=150;
21 : DosError:=152;
end;
end
else
doserror:=0;
end;
procedure intr(intno : byte;var regs : registers);
begin
realintr(intno,regs);
end;
procedure msdos(var regs : registers);
begin
intr($21,regs);
end;
{******************************************************************************
--- Info / Date / Time ---
******************************************************************************}
function dosversion : word;
begin
dosregs.ax:=$3000;
msdos(dosregs);
dosversion:=dosregs.ax;
end;
procedure getdate(var year,month,mday,wday : word);
begin
dosregs.ax:=$2a00;
msdos(dosregs);
wday:=dosregs.al;
year:=dosregs.cx;
month:=dosregs.dh;
mday:=dosregs.dl;
end;
procedure setdate(year,month,day : word);
begin
dosregs.cx:=year;
dosregs.dh:=month;
dosregs.dl:=day;
dosregs.ah:=$2b;
msdos(dosregs);
end;
procedure gettime(var hour,minute,second,sec100 : word);
begin
dosregs.ah:=$2c;
msdos(dosregs);
hour:=dosregs.ch;
minute:=dosregs.cl;
second:=dosregs.dh;
sec100:=dosregs.dl;
end;
procedure settime(hour,minute,second,sec100 : word);
begin
dosregs.ch:=hour;
dosregs.cl:=minute;
dosregs.dh:=second;
dosregs.dl:=sec100;
dosregs.ah:=$2d;
msdos(dosregs);
end;
Procedure packtime(var t : datetime;var p : longint);
Begin
p:=(t.sec shr 1)+(t.min shl 5)+(t.hour shl 11)+(t.day shl 16)+(t.month shl 21)+((t.year-1980) shl 25);
End;
Procedure unpacktime(p : longint;var t : datetime);
Begin
with t do
begin
sec:=(p and 31) shl 1;
min:=(p shr 5) and 63;
hour:=(p shr 11) and 31;
day:=(p shr 16) and 31;
month:=(p shr 21) and 15;
year:=(p shr 25)+1980;
end;
End;
{******************************************************************************
--- Exec ---
******************************************************************************}
var
lastdosexitcode : word;
procedure exec(const path : pathstr;const comline : comstr);
type
realptr = packed record
ofs,seg : word;
end;
texecblock = packed record
envseg : word;
comtail : realptr;
firstFCB : realptr;
secondFCB : realptr;
iniStack : realptr;
iniCSIP : realptr;
end;
var
current_dos_buffer_pos,
arg_ofs,
i,la_env,
la_p,la_c,la_e,
fcb1_la,fcb2_la : longint;
execblock : texecblock;
c,p : string;
function paste_to_dos(src : string) : boolean;
var
c : array[0..255] of char;
begin
paste_to_dos:=false;
if current_dos_buffer_pos+length(src)+1>transfer_buffer+tb_size then
RunError(217);
move(src[1],c[0],length(src));
c[length(src)]:=#0;
seg_move(get_ds,longint(@c),dosmemselector,current_dos_buffer_pos,length(src)+1);
current_dos_buffer_pos:=current_dos_buffer_pos+length(src)+1;
paste_to_dos:=true;
end;
begin
{ create command line }
move(comline[0],c[1],length(comline)+1);
c[length(comline)+2]:=#13;
c[0]:=char(length(comline)+2);
{ create path }
p:=path;
for i:=1 to length(p) do
if p[i]='/' then
p[i]:='\';
if LFNSupport then
GetShortName(p);
{ create buffer }
la_env:=transfer_buffer;
while (la_env and 15)<>0 do
inc(la_env);
current_dos_buffer_pos:=la_env;
{ copy environment }
for i:=1 to envcount do
paste_to_dos(envstr(i));
paste_to_dos(''); { adds a double zero at the end }
{ allow slash as backslash }
la_p:=current_dos_buffer_pos;
paste_to_dos(p);
la_c:=current_dos_buffer_pos;
paste_to_dos(c);
la_e:=current_dos_buffer_pos;
fcb1_la:=la_e;
la_e:=la_e+16;
fcb2_la:=la_e;
la_e:=la_e+16;
{ allocate FCB see dosexec code }
arg_ofs:=1;
while (c[arg_ofs] in [' ',#9]) do
inc(arg_ofs);
dosregs.ax:=$2901;
dosregs.ds:=(la_c+arg_ofs) shr 4;
dosregs.esi:=(la_c+arg_ofs) and 15;
dosregs.es:=fcb1_la shr 4;
dosregs.edi:=fcb1_la and 15;
msdos(dosregs);
{ allocate second FCB see dosexec code }
repeat
inc(arg_ofs);
until (c[arg_ofs] in [' ',#9,#13]);
if c[arg_ofs]<>#13 then
begin
repeat
inc(arg_ofs);
until not (c[arg_ofs] in [' ',#9]);
end;
dosregs.ax:=$2901;
dosregs.ds:=(la_c+arg_ofs) shr 4;
dosregs.si:=(la_c+arg_ofs) and 15;
dosregs.es:=fcb2_la shr 4;
dosregs.di:=fcb2_la and 15;
msdos(dosregs);
with execblock do
begin
envseg:=la_env shr 4;
comtail.seg:=la_c shr 4;
comtail.ofs:=la_c and 15;
firstFCB.seg:=fcb1_la shr 4;
firstFCB.ofs:=fcb1_la and 15;
secondFCB.seg:=fcb2_la shr 4;
secondFCB.ofs:=fcb2_la and 15;
end;
seg_move(get_ds,longint(@execblock),dosmemselector,la_e,sizeof(texecblock));
dosregs.edx:=la_p and 15;
dosregs.ds:=la_p shr 4;
dosregs.ebx:=la_e and 15;
dosregs.es:=la_e shr 4;
dosregs.ax:=$4b00;
msdos(dosregs);
LoadDosError;
if DosError=0 then
begin
dosregs.ax:=$4d00;
msdos(dosregs);
LastDosExitCode:=DosRegs.al
end
else
LastDosExitCode:=0;
end;
function dosexitcode : word;
begin
dosexitcode:=lastdosexitcode;
end;
procedure getcbreak(var breakvalue : boolean);
begin
DosError:=0;
dosregs.ax:=$3300;
msdos(dosregs);
breakvalue:=dosregs.dl<>0;
end;
procedure setcbreak(breakvalue : boolean);
begin
DosError:=0;
dosregs.ax:=$3301;
dosregs.dl:=ord(breakvalue);
msdos(dosregs);
end;
procedure getverify(var verify : boolean);
begin
DosError:=0;
dosregs.ah:=$54;
msdos(dosregs);
verify:=dosregs.al<>0;
end;
procedure setverify(verify : boolean);
begin
DosError:=0;
dosregs.ah:=$2e;
dosregs.al:=ord(verify);
msdos(dosregs);
end;
{******************************************************************************
--- Disk ---
******************************************************************************}
TYPE ExtendedFat32FreeSpaceRec=packed Record
RetSize : WORD; { (ret) size of returned structure}
Strucversion : WORD; {(call) structure version (0000h)
(ret) actual structure version (0000h)}
SecPerClus, {number of sectors per cluster}
BytePerSec, {number of bytes per sector}
AvailClusters, {number of available clusters}
TotalClusters, {total number of clusters on the drive}
AvailPhysSect, {physical sectors available on the drive}
TotalPhysSect, {total physical sectors on the drive}
AvailAllocUnits, {Available allocation units}
TotalAllocUnits : DWORD; {Total allocation units}
Dummy,Dummy2 : DWORD; {8 bytes reserved}
END;
function do_diskdata(drive : byte; Free : BOOLEAN) : Int64;
VAR
S : String;
Rec : ExtendedFat32FreeSpaceRec;
BEGIN
if (swap(dosversion)>=$070A) AND LFNSupport then
begin
S:='C:\'#0;
if Drive=0 then
begin
GetDir(Drive,S);
Setlength(S,4);
S[4]:=#0;
end
else
S[1]:=chr(Drive+64);
Rec.Strucversion:=0;
dosmemput(tb_segment,tb_offset,Rec,SIZEOF(ExtendedFat32FreeSpaceRec));
dosmemput(tb_segment,tb_offset+Sizeof(ExtendedFat32FreeSpaceRec)+1,S[1],4);
dosregs.dx:=tb_offset+Sizeof(ExtendedFat32FreeSpaceRec)+1;
dosregs.ds:=tb_segment;
dosregs.di:=tb_offset;
dosregs.es:=tb_segment;
dosregs.cx:=Sizeof(ExtendedFat32FreeSpaceRec);
dosregs.ax:=$7303;
msdos(dosregs);
copyfromdos(rec,Sizeof(ExtendedFat32FreeSpaceRec));
if dosregs.ax<>$ffff then {No error clausule in int except cf}
begin
copyfromdos(rec,Sizeof(ExtendedFat32FreeSpaceRec));
if Free then
Do_DiskData:=int64(rec.AvailAllocUnits)*rec.SecPerClus*rec.BytePerSec
else
Do_DiskData:=int64(rec.TotalAllocUnits)*rec.SecPerClus*rec.BytePerSec;
end
else
Do_DiskData:=-1;
end
else
begin
dosregs.dl:=drive;
dosregs.ah:=$36;
msdos(dosregs);
if dosregs.ax<>$FFFF then
begin
if Free then
Do_DiskData:=int64(dosregs.ax)*dosregs.bx*dosregs.cx
else
Do_DiskData:=int64(dosregs.ax)*dosregs.cx*dosregs.dx;
end
else
do_diskdata:=-1;
end;
end;
function diskfree(drive : byte) : int64;
begin
diskfree:=Do_DiskData(drive,TRUE);
end;
function disksize(drive : byte) : int64;
begin
disksize:=Do_DiskData(drive,false);
end;
{******************************************************************************
--- LFNFindfirst LFNFindNext ---
******************************************************************************}
type
LFNSearchRec=packed record
attr,
crtime,
crtimehi,
actime,
actimehi,
lmtime,
lmtimehi,
sizehi,
size : longint;
reserved : array[0..7] of byte;
name : array[0..259] of byte;
shortname : array[0..13] of byte;
end;
procedure LFNSearchRec2Dos(const w:LFNSearchRec;hdl:longint;var d:Searchrec);
var
Len : longint;
begin
With w do
begin
FillChar(d,sizeof(SearchRec),0);
if DosError=0 then
len:=StrLen(@Name)
else
len:=0;
d.Name[0]:=chr(len);
Move(Name[0],d.Name[1],Len);
d.Time:=lmTime;
d.Size:=Size;
d.Attr:=Attr and $FF;
Move(hdl,d.Fill,4);
end;
end;
procedure LFNFindFirst(path:pchar;attr:longint;var s:searchrec);
var
i : longint;
w : LFNSearchRec;
begin
{ allow slash as backslash }
for i:=0 to strlen(path) do
if path[i]='/' then path[i]:='\';
dosregs.si:=1; { use ms-dos time }
{ don't include the label if not asked for it, needed for network drives }
if attr=$8 then
dosregs.ecx:=8
else
dosregs.ecx:=attr and (not 8);
dosregs.edx:=tb_offset+Sizeof(LFNSearchrec)+1;
dosmemput(tb_segment,tb_offset+Sizeof(LFNSearchrec)+1,path^,strlen(path)+1);
dosregs.ds:=tb_segment;
dosregs.edi:=tb_offset;
dosregs.es:=tb_segment;
dosregs.ax:=$714e;
msdos(dosregs);
LoadDosError;
copyfromdos(w,sizeof(LFNSearchRec));
LFNSearchRec2Dos(w,dosregs.ax,s);
end;
procedure LFNFindNext(var s:searchrec);
var
hdl : longint;
w : LFNSearchRec;
begin
Move(s.Fill,hdl,4);
dosregs.si:=1; { use ms-dos time }
dosregs.edi:=tb_offset;
dosregs.es:=tb_segment;
dosregs.ebx:=hdl;
dosregs.ax:=$714f;
msdos(dosregs);
LoadDosError;
copyfromdos(w,sizeof(LFNSearchRec));
LFNSearchRec2Dos(w,hdl,s);
end;
procedure LFNFindClose(var s:searchrec);
var
hdl : longint;
begin
Move(s.Fill,hdl,4);
dosregs.ebx:=hdl;
dosregs.ax:=$71a1;
msdos(dosregs);
LoadDosError;
end;
{******************************************************************************
--- DosFindfirst DosFindNext ---
******************************************************************************}
procedure dossearchrec2searchrec(var f : searchrec);
var
len : longint;
begin
{ Check is necessary!! OS/2's VDM doesn't clear the name with #0 if the }
{ file doesn't exist! (JM) }
if dosError = 0 then
len:=StrLen(@f.Name)
else len := 0;
Move(f.Name[0],f.Name[1],Len);
f.Name[0]:=chr(len);
end;
procedure DosFindfirst(path : pchar;attr : word;var f : searchrec);
var
i : longint;
begin
{ allow slash as backslash }
for i:=0 to strlen(path) do
if path[i]='/' then path[i]:='\';
copytodos(f,sizeof(searchrec));
dosregs.edx:=tb_offset;
dosregs.ds:=tb_segment;
dosregs.ah:=$1a;
msdos(dosregs);
dosregs.ecx:=attr;
dosregs.edx:=tb_offset+Sizeof(searchrec)+1;
dosmemput(tb_segment,tb_offset+Sizeof(searchrec)+1,path^,strlen(path)+1);
dosregs.ds:=tb_segment;
dosregs.ah:=$4e;
msdos(dosregs);
copyfromdos(f,sizeof(searchrec));
LoadDosError;
dossearchrec2searchrec(f);
end;
procedure Dosfindnext(var f : searchrec);
begin
copytodos(f,sizeof(searchrec));
dosregs.edx:=tb_offset;
dosregs.ds:=tb_segment;
dosregs.ah:=$1a;
msdos(dosregs);
dosregs.ah:=$4f;
msdos(dosregs);
copyfromdos(f,sizeof(searchrec));
LoadDosError;
dossearchrec2searchrec(f);
end;
{******************************************************************************
--- Findfirst FindNext ---
******************************************************************************}
procedure findfirst(const path : pathstr;attr : word;var f : searchRec);
var
path0 : array[0..256] of char;
begin
doserror:=0;
strpcopy(path0,path);
if LFNSupport then
LFNFindFirst(path0,attr,f)
else
Dosfindfirst(path0,attr,f);
end;
procedure findnext(var f : searchRec);
begin
doserror:=0;
if LFNSupport then
LFNFindnext(f)
else
Dosfindnext(f);
end;
Procedure FindClose(Var f: SearchRec);
begin
DosError:=0;
if LFNSupport then
LFNFindClose(f);
end;
type swap_proc = procedure;
var
_swap_in : swap_proc;external name '_swap_in';
_swap_out : swap_proc;external name '_swap_out';
_exception_exit : pointer;external name '_exception_exit';
_v2prt0_exceptions_on : longbool;external name '_v2prt0_exceptions_on';
procedure swapvectors;
begin
if _exception_exit<>nil then
if _v2prt0_exceptions_on then
_swap_in()
else
_swap_out();
end;
{******************************************************************************
--- File ---
******************************************************************************}
procedure fsplit(path : pathstr;var dir : dirstr;var name : namestr;var ext : extstr);
var
dotpos,p1,i : longint;
begin
{ allow slash as backslash }
for i:=1 to length(path) do
if path[i]='/' then path[i]:='\';
{ get drive name }
p1:=pos(':',path);
if p1>0 then
begin
dir:=path[1]+':';
delete(path,1,p1);
end
else
dir:='';
{ split the path and the name, there are no more path informtions }
{ if path contains no backslashes }
while true do
begin
p1:=pos('\',path);
if p1=0 then
break;
dir:=dir+copy(path,1,p1);
delete(path,1,p1);
end;
{ try to find out a extension }
if LFNSupport then
begin
Ext:='';
i:=Length(Path);
DotPos:=256;
While (i>0) Do
Begin
If (Path[i]='.') Then
begin
DotPos:=i;
break;
end;
Dec(i);
end;
Ext:=Copy(Path,DotPos,255);
Name:=Copy(Path,1,DotPos - 1);
end
else
begin
p1:=pos('.',path);
if p1>0 then
begin
ext:=copy(path,p1,4);
delete(path,p1,length(path)-p1+1);
end
else
ext:='';
name:=path;
end;
end;
(*
function FExpand (const Path: PathStr): PathStr;
- declared in fexpand.inc
*)
{$DEFINE FPC_FEXPAND_UNC} (* UNC paths are supported *)
{$DEFINE FPC_FEXPAND_DRIVES} (* Full paths begin with drive specification *)
{$I fexpand.inc}
{$UNDEF FPC_FEXPAND_DRIVES}
{$UNDEF FPC_FEXPAND_UNC}
Function FSearch(path: pathstr; dirlist: string): pathstr;
var
i,p1 : longint;
s : searchrec;
newdir : pathstr;
begin
{ check if the file specified exists }
findfirst(path,anyfile,s);
if doserror=0 then
begin
findclose(s);
fsearch:=path;
exit;
end;
{ No wildcards allowed in these things }
if (pos('?',path)<>0) or (pos('*',path)<>0) then
fsearch:=''
else
begin
{ allow slash as backslash }
for i:=1 to length(dirlist) do
if dirlist[i]='/' then dirlist[i]:='\';
repeat
p1:=pos(';',dirlist);
if p1<>0 then
begin
newdir:=copy(dirlist,1,p1-1);
delete(dirlist,1,p1);
end
else
begin
newdir:=dirlist;
dirlist:='';
end;
if (newdir<>'') and (not (newdir[length(newdir)] in ['\',':'])) then
newdir:=newdir+'\';
findfirst(newdir+path,anyfile,s);
if doserror=0 then
newdir:=newdir+path
else
newdir:='';
until (dirlist='') or (newdir<>'');
fsearch:=newdir;
end;
findclose(s);
end;
{ change to short filename if successful DOS call PM }
function GetShortName(var p : String) : boolean;
var
c : array[0..255] of char;
begin
move(p[1],c[0],length(p));
c[length(p)]:=#0;
copytodos(c,length(p)+1);
dosregs.ax:=$7160;
dosregs.cx:=1;
dosregs.ds:=tb_segment;
dosregs.si:=tb_offset;
dosregs.es:=tb_segment;
dosregs.di:=tb_offset;
msdos(dosregs);
LoadDosError;
if DosError=0 then
begin
copyfromdos(c,255);
move(c[0],p[1],strlen(c));
p[0]:=char(strlen(c));
GetShortName:=true;
end
else
GetShortName:=false;
end;
{ change to long filename if successful DOS call PM }
function GetLongName(var p : String) : boolean;
var
c : array[0..255] of char;
begin
move(p[1],c[0],length(p));
c[length(p)]:=#0;
copytodos(c,length(p)+1);
dosregs.ax:=$7160;
dosregs.cx:=2;
dosregs.ds:=tb_segment;
dosregs.si:=tb_offset;
dosregs.es:=tb_segment;
dosregs.di:=tb_offset;
msdos(dosregs);
LoadDosError;
if DosError=0 then
begin
copyfromdos(c,255);
move(c[0],p[1],strlen(c));
p[0]:=char(strlen(c));
GetLongName:=true;
end
else
GetLongName:=false;
end;
{******************************************************************************
--- Get/Set File Time,Attr ---
******************************************************************************}
procedure getftime(var f;var time : longint);
begin
dosregs.bx:=textrec(f).handle;
dosregs.ax:=$5700;
msdos(dosregs);
loaddoserror;
time:=(dosregs.dx shl 16)+dosregs.cx;
end;
procedure setftime(var f;time : longint);
begin
dosregs.bx:=textrec(f).handle;
dosregs.cx:=time and $ffff;
dosregs.dx:=time shr 16;
dosregs.ax:=$5701;
msdos(dosregs);
loaddoserror;
end;
procedure getfattr(var f;var attr : word);
begin
copytodos(filerec(f).name,strlen(filerec(f).name)+1);
dosregs.edx:=tb_offset;
dosregs.ds:=tb_segment;
if LFNSupport then
begin
dosregs.ax:=$7143;
dosregs.bx:=0;
end
else
dosregs.ax:=$4300;
msdos(dosregs);
LoadDosError;
Attr:=dosregs.cx;
end;
procedure setfattr(var f;attr : word);
begin
copytodos(filerec(f).name,strlen(filerec(f).name)+1);
dosregs.edx:=tb_offset;
dosregs.ds:=tb_segment;
if LFNSupport then
begin
dosregs.ax:=$7143;
dosregs.bx:=1;
end
else
dosregs.ax:=$4301;
dosregs.cx:=attr;
msdos(dosregs);
LoadDosError;
end;
{******************************************************************************
--- Environment ---
******************************************************************************}
function envcount : longint;
var
hp : ppchar;
begin
hp:=envp;
envcount:=0;
while assigned(hp^) do
begin
inc(envcount);
inc(hp);
end;
end;
function envstr(index : integer) : string;
begin
if (index<=0) or (index>envcount) then
begin
envstr:='';
exit;
end;
envstr:=strpas(ppchar(pointer(envp)+4*(index-1))^);
end;
Function GetEnv(envvar: string): string;
var
hp : ppchar;
hs : string;
eqpos : longint;
begin
envvar:=upcase(envvar);
hp:=envp;
getenv:='';
while assigned(hp^) do
begin
hs:=strpas(hp^);
eqpos:=pos('=',hs);
if upcase(copy(hs,1,eqpos-1))=envvar then
begin
getenv:=copy(hs,eqpos+1,255);
exit;
end;
inc(hp);
end;
end;
{******************************************************************************
--- Not Supported ---
******************************************************************************}
Procedure keep(exitcode : word);
Begin
End;
Procedure getintvec(intno : byte;var vector : pointer);
Begin
End;
Procedure setintvec(intno : byte;vector : pointer);
Begin
End;
end.
{
$Log$
Revision 1.12 2001-03-16 20:09:58 hajny
* universal FExpand
Revision 1.11 2000/12/16 15:27:15 peter
* fixed disksize to return -1 on error
Revision 1.10 2000/10/11 15:38:03 peter
* diskfree doserror fix (merged)
Revision 1.9 2000/09/06 20:47:34 peter
* removed previous fsplit() patch as it's not the correct behaviour for
LFNs. The code showing the bug could easily be adapted (merged)
Revision 1.8 2000/09/04 20:17:53 peter
* fixed previous commit (merged)
Revision 1.7 2000/09/04 19:38:12 peter
* fsplit with .. fix from Thomas (merged)
Revision 1.6 2000/08/04 21:45:39 peter
* getenv case insensitive (merged)
Revision 1.4 2000/07/22 12:24:55 jonas
* merged dossearchrec2searchrec() fix from fixes branch
Revision 1.3 2000/07/14 10:33:09 michael
+ Conditionals fixed
Revision 1.2 2000/07/13 11:33:39 michael
+ removed logs
}
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