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|
{
This file is part of the Free Pascal run time library.
Copyright (c) 2002 by Marco van de Voort
Some generic overloads for stringfunctions in the baseunix unit.
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.
**********************************************************************}
Function FpLink (const existing : RawByteString; const newone : RawByteString): cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemExistingFileName, SystemNewOneFileName: RawByteString;
Begin
SystemExistingFileName:=ToSingleByteFileSystemEncodedFileName(existing);
SystemNewOneFileName:=ToSingleByteFileSystemEncodedFileName(newone);
FpLink:=FpLink(pchar(SystemExistingFileName),pchar(SystemNewOneFileName));
End;
Function FpMkfifo (const path : RawByteString; Mode : TMode): cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpMkfifo:=FpMkfifo(pchar(SystemPath),mode);
End;
Function FpChmod (const path : RawByteString; Mode : TMode): cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpChmod:=FpChmod(pchar(SystemPath),mode);
End;
Function FpChown (const path : RawByteString; owner : TUid; group : TGid): cInt;{$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpChown:=FpChown(pchar(SystemPath),owner,group);
End;
Function FpUtime (const path : RawByteString; times : putimbuf): cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpUtime:=FpUtime(pchar(SystemPath),times);
End;
{
Function FpGetcwd (const path:RawByteString; siz:TSize):RawByteString; {$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpGetcwd:=RawByteString(pchar(FpGetcwd(pchar(SystemPath),siz)));
SetCodePage(FpGetcwd,DefaultFileSystemCodePage,false);
End;
}
Function FpGetcwd: RawByteString;
Var
Buf : Array[0..PATH_MAX+1] of char;
Begin
Buf[PATH_MAX+1]:=#0;
If FpGetcwd(@Buf[0],PATH_MAX)=Nil then
FpGetcwd:=''
else
begin
FpGetcwd:=Buf;
SetCodePage(FpGetcwd,DefaultFileSystemCodePage,false);
end;
End;
Function FpExecve (const path : RawByteString; argv : ppchar; envp: ppchar): cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpExecve:=FpExecve (pchar(SystemPath),argv,envp);
End;
Function FpExecv (const path : RawByteString; argv : ppchar): cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpExecv:=FpExecve (pchar(SystemPath),argv,envp);
End;
Function FpChdir (const path : RawByteString): cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpChDir:=FpChdir(pchar(SystemPath));
End;
Function FpOpen (const path : RawByteString; flags : cInt; Mode: TMode):cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpOpen:=FpOpen(pchar(SystemPath),flags,mode);
End;
Function FpMkdir (const path : RawByteString; Mode: TMode):cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpMkdir:=FpMkdir(pchar(SystemPath),mode);
End;
Function FpUnlink (const path : RawByteString): cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpUnlink:=FpUnlink(pchar(SystemPath));
End;
Function FpRmdir (const path : RawByteString): cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpRmdir:=FpRmdir(pchar(SystemPath));
End;
Function FpRename (const old : RawByteString; const newpath: RawByteString): cInt; {$ifdef VER2_0}inline;{$endif}
var
OldSystemPath, NewSystemPath: RawByteString;
Begin
OldSystemPath:=ToSingleByteFileSystemEncodedFileName(old);
NewSystemPath:=ToSingleByteFileSystemEncodedFileName(newpath);
FpRename:=FpRename(pchar(OldSystemPath),pchar(NewSystemPath));
End;
Function FpStat (const path: RawByteString; var buf : stat): cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpStat:=FpStat(pchar(SystemPath),buf);
End;
Function fpLstat (const path: RawByteString; Info: pstat):cint; inline;
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
fplstat:=fplstat(pchar(SystemPath), info);
end;
Function fpLstat (path:pchar;var Info:stat):cint; inline;
begin
fpLstat:=fplstat(path,@info);
end;
Function fpLstat (const Filename: RawByteString;var Info:stat):cint; inline;
Begin
fpLstat:=fplstat(filename,@info);
end;
Function FpAccess (const pathname : RawByteString; aMode : cInt): cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemPathName: RawByteString;
Begin
SystemPathName:=ToSingleByteFileSystemEncodedFileName(pathname);
FpAccess:=FpAccess(pchar(SystemPathName),amode);
End;
Function FPFStat(var F:Text;Var Info:stat):Boolean; {$ifdef VER2_0}inline;{$endif}
{
Get all information on a text file, and return it in info.
}
begin
FPFStat:=FPFstat(TextRec(F).Handle,INfo)=0;
end;
Function FPFStat(var F:File;Var Info:stat):Boolean; {$ifdef VER2_0}inline;{$endif}
{
Get all information on a untyped file, and return it in info.
}
begin
FPFStat:=FPFstat(FileRec(F).Handle,Info)=0;
end;
Function FpSignal(signum:longint;Handler:signalhandler):signalhandler;
// should be moved out of generic files. Too specific.
var sa,osa : sigactionrec;
begin
sa.sa_handler:=SigActionHandler(handler);
FillChar(sa.sa_mask,sizeof(sa.sa_mask),#0);
sa.sa_flags := 0;
{ if (sigintr and signum) =0 then
{restart behaviour needs libc}
sa.sa_flags :=sa.sa_flags or SA_RESTART;
}
FPSigaction(signum,@sa,@osa);
if fpgetErrNo<>0 then
fpsignal:=NIL
else
fpsignal:=signalhandler(osa.sa_handler);
end;
{$ifdef FPC_USE_LIBC} // can't remember why this is the case. Might be legacy.
function xFpread(fd: cint; buf: pchar; nbytes : size_t): ssize_t; cdecl; external clib name 'read';
{$else}
function xFpread(fd: cint; buf: pchar; nbytes : size_t): ssize_t; external name 'FPC_SYSC_READ';
{$endif}
Function FpRead (fd : cInt;var buf; nbytes : TSize): TSsize; {$ifdef VER2_0}inline;{$endif}
begin
FPRead:=xFpRead(fd,pchar(@buf),nbytes);
end;
Function FpWrite (fd : cInt;const buf; nbytes : TSize): TSsize; {$ifdef VER2_0}inline;{$endif}
begin
FpWrite:=FpWrite(fd,pchar(@buf),nbytes);
end;
{$ifdef linux}
function FppRead (fd : cInt;var buf; nbytes : TSize; offset:Toff): TSsize; {$ifdef VER2_0}inline;{$endif}
begin
FppRead:=FppRead(fd,pchar(@buf),nbytes,offset);
end;
function FppWrite (fd : cInt;const buf; nbytes : TSize; offset:Toff): TSsize; {$ifdef VER2_0}inline;{$endif}
begin
FppWrite:=FppWrite(fd,pchar(@buf),nbytes,offset);
end;
{$endif}
const
{ read/write permission for everyone }
MODE_FPOPEN = S_IWUSR OR S_IRUSR OR
S_IWGRP OR S_IRGRP OR
S_IWOTH OR S_IROTH;
Function FpOpen (path : pChar; flags : cInt):cInt; {$ifdef VER2_0}inline;{$endif}
begin
FpOpen:=FpOpen(path,flags,MODE_FPOPEN);
end;
Function FpOpen (const path : RawByteString; flags : cInt):cInt; {$ifdef VER2_0}inline;{$endif}
var
SystemPath: RawByteString;
Begin
SystemPath:=ToSingleByteFileSystemEncodedFileName(path);
FpOpen:=FpOpen(pchar(SystemPath),flags,MODE_FPOPEN);
end;
Function FpOpen (path : String; flags : cInt):cInt;
begin
path:=path+#0;
FpOpen:=FpOpen(@path[1],flags,MODE_FPOPEN);
end;
Function FpOpen (path : String; flags : cInt; Mode: TMode):cInt;
begin
path:=path+#0;
FpOpen:=FpOpen(@path[1],flags,Mode);
end;
Function FpOpendir (const dirname : RawByteString): pDir; {$ifdef VER2_0}inline;{$endif}
var
SystemDirName: RawByteString;
Begin
SystemDirName:=ToSingleByteFileSystemEncodedFileName(dirname);
FpOpenDir:=FpOpenDir(pchar(SystemDirName));
End;
Function FpOpendir (dirname : shortString): pDir; {$ifdef VER2_0}inline;{$endif}
Begin
dirname:=dirname+#0;
FpOpenDir:=FpOpenDir(pchar(@dirname[1]));
End;
Function FpStat (path: String; var buf : stat): cInt;
begin
path:=path+#0;
FpStat:=FpStat(pchar(@path[1]),buf);
end;
Function fpDup(var oldfile,newfile:text):cint;
{
Copies the filedescriptor oldfile to newfile, after flushing the buffer of
oldfile.
After which the two textfiles are, in effect, the same, except
that they don't share the same buffer, and don't share the same
close_on_exit flag.
}
begin
flush(oldfile);{ We cannot share buffers, so we flush them. }
textrec(newfile):=textrec(oldfile);
textrec(newfile).bufptr:=@(textrec(newfile).buffer);{ No shared buffer. }
textrec(newfile).handle:=fpDup(textrec(oldfile).handle);
fpdup:=textrec(newfile).handle;
end;
Function fpDup(var oldfile,newfile:file):cint;
{
Copies the filedescriptor oldfile to newfile
}
begin
filerec(newfile):=filerec(oldfile);
filerec(newfile).handle:=fpDup(filerec(oldfile).handle);
fpdup:= filerec(newfile).handle;
end;
Function FpDup2(var oldfile,newfile:text):cint;
{
Copies the filedescriptor oldfile to newfile, after flushing the buffer of
oldfile. It closes newfile if it was still open.
After which the two textfiles are, in effect, the same, except
that they don't share the same buffer, and don't share the same
close_on_exit flag.
}
var
tmphandle : word;
begin
case TextRec(oldfile).mode of
fmOutput, fmInOut, fmAppend :
flush(oldfile);{ We cannot share buffers, so we flush them. }
end;
case TextRec(newfile).mode of
fmOutput, fmInOut, fmAppend :
flush(newfile);
end;
tmphandle:=textrec(newfile).handle;
textrec(newfile):=textrec(oldfile);
textrec(newfile).handle:=tmphandle;
textrec(newfile).bufptr:=@(textrec(newfile).buffer);{ No shared buffer. }
fpDup2:=fpDup2(textrec(oldfile).handle,textrec(newfile).handle);
end;
Function FpDup2(var oldfile,newfile:file):cint;
{
Copies the filedescriptor oldfile to newfile
}
var
tmphandle : word;
begin
tmphandle := filerec(newfile).handle;
filerec(newfile):=filerec(oldfile);
filerec(newfile).handle := tmphandle;
fpDup2:=fpDup2(filerec(oldfile).handle,filerec(newfile).handle);
end;
function fptime :time_t; {$ifdef VER2_0}inline;{$endif}
var t:time_t;
begin
fptime:=fptime(t);
end;
Function fpSelect(N:cint;readfds,writefds,exceptfds:pfdset;TimeOut:cint):cint;
{
Select checks whether the file descriptor sets in readfs/writefs/exceptfs
have changed.
This function allows specification of a timeout as a longint.
}
var
p : PTimeVal;
tv : TimeVal;
begin
if TimeOut=-1 then
p:=nil
else
begin
tv.tv_Sec:=Timeout div 1000;
tv.tv_Usec:=(Timeout mod 1000)*1000;
p:=@tv;
end;
fpSelect:=fpSelect(N,Readfds,WriteFds,ExceptFds,p);
end;
Function fpSelect(var T:Text;TimeOut :PTimeval):cint;
Var
F:TfdSet;
begin
if textrec(t).mode=fmclosed then
begin
fpSetErrNo(ESysEBADF);
exit(-1);
end;
FpFD_ZERO(f);
fpFD_SET(textrec(T).handle,f);
if textrec(T).mode=fminput then
fpselect:=fpselect(textrec(T).handle+1,@f,nil,nil,TimeOut)
else
fpSelect:=fpselect(textrec(T).handle+1,nil,@f,nil,TimeOut);
end;
Function fpSelect(var T:Text;TimeOut :time_t):cint;
var
p : PTimeVal;
tv : TimeVal;
begin
if TimeOut=-1 then
p:=nil
else
begin
tv.tv_Sec:=Timeout div 1000;
tv.tv_Usec:=(Timeout mod 1000)*1000;
p:=@tv;
end;
fpSelect:=fpSelect(T,p);
end;
function FpWaitPid (pid : TPid; Var Status : cInt; Options : cint) : TPid;
begin
fpWaitPID:=fpWaitPID(Pid,@Status,Options);
end;
Function fpReadLink(const Name: RawByteString): RawByteString;
{
Read a link (where it points to)
}
var
SystemFileName : RawByteString;
i : cint;
begin
SetLength(fpReadLink,PATH_MAX);
SystemFileName:=ToSingleByteFileSystemEncodedFileName(Name);
i:=fpReadLink(pchar(SystemFileName),pchar(fpReadLink),PATH_MAX);
if i>0 then
begin
SetLength(fpReadLink,i);
SetCodePage(fpReadLink,DefaultFileSystemCodePage,false);
end
else
fpReadLink:='';
end;
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