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90 lines
2.5 KiB
PHP
90 lines
2.5 KiB
PHP
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 1999-2000 by Peter Vreman
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member of the Free Pascal development team.
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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A generic implementation of ttyname functionality.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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**********************************************************************}
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function TTYName(Handle:cint):string;
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{
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Return the name of the current tty described by handle f.
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returns empty string in case of an error.
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}
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var
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mydev : dev_t;
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myino : ino_t;
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st : stat;
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function mysearch(n:string): boolean;
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{searches recursively for the device in the directory given by n,
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returns true if found and sets the name of the device in ttyname}
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var dirstream : pdir;
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d : pdirent;
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name : string;
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st : stat;
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begin
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dirstream:=fpopendir(n);
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if (dirstream=nil) then
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exit(false);
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d:=fpReaddir(dirstream^);
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while (d<>nil) do
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begin
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name:=n+'/'+strpas(@(d^.d_name));
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// fpstat(name,st);
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if fpstat(name,st)=0 then
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begin
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if (fpS_ISDIR(st.st_mode)) and { if it is a directory }
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(strpas(@(d^.d_name))<>'.') and { but not ., .. and fd subdirs }
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(strpas(@(d^.d_name))<>'..') and
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(strpas(@(d^.d_name))<>'') and
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(strpas(@(d^.d_name))<>'fd') then
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begin {we found a directory, search inside it}
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if mysearch(name) then
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begin {the device is here}
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fpclosedir(dirstream^); {then don't continue searching}
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mysearch:=true;
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exit;
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end;
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end
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else if (ino_t(d^.d_fileno)=myino) and (st.st_dev=mydev) then
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begin
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fpclosedir(dirstream^);
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ttyname:=name;
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mysearch:=true;
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exit;
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end;
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end;
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d:=fpReaddir(dirstream^);
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end;
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fpclosedir(dirstream^);
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mysearch:=false;
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end;
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begin
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TTYName:='';
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if (fpfstat(handle,st)=-1) or (isatty (handle)<>1) then
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exit;
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mydev:=st.st_dev;
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myino:=st.st_ino;
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mysearch('/dev');
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end;
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function TTYName(var F:Text):string;
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{
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Idem as previous, only now for text variables;
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}
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begin
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TTYName:=TTYName(textrec(f).handle);
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end;
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