/usr/share/ada/adainclude/texttools/os.adb is in libtexttools3-dev 2.0.7-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 | ------------------------------------------------------------------------------
-- OS (package body) --
-- --
-- Part of TextTools --
-- Designed and Programmed by Ken O. Burtch --
-- --
------------------------------------------------------------------------------
-- --
-- Copyright (C) 1999-2007 Ken O. Burtch --
-- --
-- This is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. This is distributed in the hope that it will be useful, but WITH- --
-- OUT 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 distributed with this; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- This is maintained at http://www.pegasoft.ca/tt.html --
-- --
------------------------------------------------------------------------------
-- C error numbers in /usr/include/asm/errno.h for linux.
--
-- much of this should probably be rewritten now that I know more about
-- kernel programming -- KB
with Text_IO; use Text_IO; -- for debugging
with Ada.Strings;
with Strings; use Strings;
with Interfaces.C;
with Gen_List;
package body os is
LockPath : constant string := "/home/ken/";
SessionLogPath : APathName;
ttyname : str255;
IsLocaltty : boolean; -- true if not client/server
---> C Interface
--
-- These are all from C_code/system.c.
procedure CTime;
pragma Import( C, CTime, "CTime" );
procedure CDate;
pragma Import( C, CDate, "CDate" );
procedure CLongDate;
pragma Import( C, CLongDate, "CLongDate" );
function CUNIX return integer;
pragma Import( C, CUNIX, "CUNIX" );
function CGetUNIX( temppath : string ) return integer;
pragma Import( C, CGetUNIX, "CGetUNIX" );
--Obsolete
--procedure GetTempName;
--pragma Import( C, GetTempName, "GetTempName" );
function CNotEmpty return integer;
pragma Import( C, CNotEmpty, "CNotEmpty" ); -- 0 = file not empty
function LockIt return integer;
pragma Import( C, LockIt, "LockIt" );
procedure UnlockIt;
pragma Import( C, UnlockIt, "UnlockIt" );
function CSetPath return integer;
pragma Import( C, CSetPath, "CSetPath" );
-- procedure CSync;
-- pragma Import( C, CSync, "CSync" );
procedure CAppend( s : string );
pragma Import( C, CAppend, "CAppend" );
function CUnlink( s : string ) return integer;
pragma Import( C, CUnlink, "CUnlink" );
procedure CClearSessionLog;
pragma Import( C, CClearSessionLog, "CClearSessionLog" );
procedure CAddSessionLog;
pragma Import( C, CAddSessionLog, "CAddSessionLog" );
procedure CUSleep( usec : long_integer );
pragma Import( C, CUSleep, "CUSleep" );
function CIsDirectory( s : string ) return integer;
pragma Import( C, CIsDirectory, "CIsDirectory" );
function CFileExists( s : string ) return boolean;
pragma Import( C, CFileExists, "CFileExists" );
function CRunIt( cmd, outfile, parm1, parm2, parm3 : string ) return integer;
pragma Import( C, CRunIt, "CRunIt" );
---> Linux Kernel Functions
--
-- Use "man <function>" to get more info.
--
-- Since Linux kernel functions use a lot of C strings (and pointers
-- to C strings), I've defined some C strings here for use with
-- the "Linux_" subprograms. To convert to and from C strings, use
-- To_C(), To_Ada(), and To255().
type ACPath is new Interfaces.C.char_array( 1..1024 );
type CPathPtr is access all ACPath;
-- A C string, pointer to same, and a another pointer.
TempCPath : aliased ACPath;
TempCPathPtr : constant CPathPtr := TempCPath'access;
TempCPtr : CPathPtr;
-- Linux_GetCWD -- returns the current working directory
function Linux_GetCWD( buf : CPathPtr; size : long_integer )
return CPathPtr;
pragma Import(C , Linux_GetCWD, "getcwd" ); -- from unistd.h
-- Linux_ChDir -- changes the current working directory
-- function Linux_ChDir( buf : CPathPtr ) return integer;
-- pragma Import(C, Linux_ChDir, "chdir" ); -- from unistd.h
-- Linux_GetEnv - get an environment variable's value
function Linux_GetEnv( env_var : CPathPtr ) return CPathPtr;
pragma Import( C, Linux_GetEnv, "getenv" ); -- from stdlib.h
-- Linux_SetEnv - set an environment variable's value
-- procedure Linux_SetEnv( env_var : CPathPtr; var_val : CPathPtr;
-- overwrite : integer );
-- pragma Import( C, Linux_SetEnv, "setenv" ); -- from stdlib.h
-- Linux_ErrNo -- error returned from last Linux operation
-- Linux_ErrNo : integer;
-- pragma Import( C, Linux_ErrNo, "errno" ); -- from errno.h
-- pragma volatile (errno);
-- Actually it is a thread-safe function call-macro.
-- Hope we won't need it from Ada or write a C wrapper.
--->
--
-- Lintel Pathnames
--
-- The pathnames are kept in a list of strings
-- was PathList : array( APathNumber ) of APathName := (others => NullStr255);
-- This should probably be a controlled object so it can be deleted
-- automatically.
type APathListRecord is record
alias : str255;
path : APathName;
end record;
function ">=" (left, right : APathListRecord ) return boolean is
begin
return left.alias >= right.alias;
end ">=";
package PathList is new Gen_List( APathListRecord, ">=" );
Paths : PathList.List;
--- Interface_String -- null-terminated "system" command string
Interface_String : array(0..255) of character;
pragma Import( C, Interface_String, "Interface_String" );
-- SessionLogName
SessionLogName : array(0..80) of character;
pragma Import( C, SessionLogName, "SessionLogName" );
procedure SetInterface( s : str255 ) is
begin
if length( s ) < Interface_String'last then
for i in 1..length(s) loop
Interface_String(i-1) := Element( s, (i) );
end loop;
Interface_String( length( s ) ) := character'val(0);
end if;
end SetInterface;
-- ESCAPE PATH: shell escape a path so it can be used in a shell function
--
-- Quick and dirty...
function EscapePath( old_path : str255 ) return str255 is
new_path : str255;
ch : character;
begin
new_path := new_path & ''';
for i in 1..length( old_path ) loop
ch := element( old_path, i );
if ch = ''' then
new_path := new_path & '\';
end if;
new_path := new_path & ch;
end loop;
new_path := new_path & ''';
return new_path;
end EscapePath;
---> Housekeeping
procedure StartupOS is
WasRaising : boolean;
procedure InitializeSessionLog is
begin
if length( SessionLogPath ) < SessionLogName'last then
for i in 1..length( SessionLogPath ) loop
SessionLogName(i-1) := Element( SessionLogPath, (i) );
end loop;
Interface_String( length( SessionLogPath ) ) := character'val(0);
end if;
CClearSessionLog;
SessionLog( "StartupOS: New " & ProgramName & " session log started" );
SessionLog( "StartupOS: " & GetLongDate & " @ " & GetTime );
if LastError /= TT_OK then
Put_Line( "StartupOS: Unable to write to session_log; error " &
AnErrorCode'image( LastError ) );
return; -- no log to write to (yet)
end if;
end InitializeSessionLog;
procedure CheckOSServices is
begin
null;
--MakeTempFilename( TempFile );
--UNIX( ToString( "zoo a " & TempFile & " /etc/passwd > /dev/null" ) );
--if LastError /= CoreOK then -- wierdness when I used if UNIX(zoo)...
-- SessionLog( "StartupOS: Unable to find zoo command", LastError );
--end if;
--Erase( TempFile & ".zoo" );
end CheckOSServices;
begin
NoError;
WasRaising := TrapErrors;
TempCPath(1) := 'T';
TempCPath(2) := 'M';
TempCPath(3) := 'P';
TempCPath(4) := 'D';
TempCPath(5) := 'I';
TempCPath(6) := 'R';
TempCPath(7) := Interfaces.C.char( ASCII.NUL );
TempCPtr := Linux_GetEnv( TempCPathPtr );
if TempCPtr /= null then
PathAlias( To255( "tmp" ), To255( To_Ada( TempCPtr.all )));
else
PathAlias( To255( "tmp" ), To255( "/tmp" ) );
end if;
-- Lookup HOME environment variable and make it an alias
-- (Had problems with To_C, so made the C string manually
TempCPath(1) := 'H';
TempCPath(2) := 'O';
TempCPath(3) := 'M';
TempCPath(4) := 'E';
TempCPath(5) := Interfaces.C.char( ASCII.NUL );
TempCPtr := Linux_GetEnv( TempCPathPtr );
if TempCPtr /= null then
PathAlias( To255( "home" ), To255( To_Ada( TempCPtr.all )));
end if;
-- Make the $SYS alias by adding ShortProgramName to $HOME
if TempCPtr = null then
SessionLogPath := NullStr255;
else
PathAlias( To255( "sys" ), To_Ada( TempCPtr.all ) & "/" &
ShortProgramName );
SessionLogPath := ExpandPath( To255( "$SYS/session_log" ) );
end if;
InitializeSessionLog;
if LastError = TT_OK then
ttyname := UNIX( "tty" );
IsLocaltty := (ttyname >= To255( "/dev/tty1" ) and
ttyname <= To255( "/dev/tty9" )) and length( ttyname ) = 9;
if LastError = TT_OK then
CheckOSServices;
end if;
if LastError /= TT_OK then
LastError := TT_OSService;
null; --Put_Line( Standard_Error, "StartupOS: See session log for error details" );
end if;
end if;
RestoreRaising( WasRaising );
-- load system parameters
-- load user defaults
end StartupOS;
procedure IdleOS( IdlePeriod : ATimeStamp ) is
pragma Unreferenced (Idleperiod);
begin
NoError;
--UNIX( "sync" ); -- should call sync() by C
--should really check and remove an old file from the .Trash
--directory, once per call
end IdleOS;
procedure ShutdownOS is
begin
NoError;
SessionLog( "ShutdownOS: End of session log" );
PathList.Clear( Paths );
end ShutdownOS;
---> OS Interfacing
function UNIX( s : str255 ) return boolean is
res : integer;
begin
NoError;
SetInterface( s );
res := CUNIX;
if CUNIX /= 0 then -- DEBUG
SessionLog( "CUNIX " & s & " returned error code" & res'img );
end if;
return res = 0;
end UNIX;
procedure UNIX( s : str255 ) is
begin
NoError;
SetInterface( s );
if CUNIX /= 0 then
Error( TT_SystemError );
end if;
end UNIX;
function UNIX( s : str255 ) return str255 is
Output : str255;
i : Natural;
temppath : str255;
res : integer;
begin
MakeTempFileName( temppath );
Output := NullStr255;
if length( s ) <= Interface_String'last - 50 then
SetInterface( s );
declare
TempPath2 : string := toString(TempPath ) & ASCII.NUL;
begin
res := CGetUNIX( TempPath2 );
if res /= 0 then
SessionLog( "CGetUNIX " & toString(s) & " returned error code" & res'img );
Error( TT_SystemError );
else
NoError;
i := 0;
while Interface_String(i) /= character'val(10) and then
Interface_String(i) /= character'val(0) loop -- line feed
Output := Append( Output, Interface_String(i) );
i := i + 1;
end loop;
end if;
end;
else
Error( TT_ParamError );
end if;
return Output;
end UNIX;
function UNIX( s : string ) return boolean is
begin
return UNIX( To255( s ) );
end UNIX;
procedure UNIX( s : string ) is
begin
UNIX( To255( s ) );
end UNIX;
function UNIX( s : string ) return str255 is
begin
return UNIX( To255( s ) );
end UNIX;
procedure RunIt( cmd : string;
parm1, parm2, parm3 : string := "";
Results : in out Str255List.List ) is
Status : integer;
TempFile : Str255;
begin
NoError;
MakeTempFileName( TempFile );
Str255List.Clear( Results );
Status := CRunIt( cmd & ASCII.NUL,
ToString( TempFile ) & ASCII.NUL,
parm1 & ASCII.NUL,
parm2 & ASCII.NUL,
parm3 & ASCII.NUL );
if IsFile( TempFile ) then
LoadList( TempFile, Results );
Erase( TempFile );
end if;
if Status = 0 then
Error( TT_OK );
else
Error( TT_SystemError );
end if;
end RunIt;
function NotEmpty( s : in Str255 ) return boolean is
begin
NoError;
SetInterface( ExpandPath( s ) );
return CNotEmpty = 0;
end NotEmpty;
function IsDirectory( s : APathName ) return boolean is
-- should return error if file doesn't exist
TempStr : str255;
begin
NoError;
TempStr := ExpandPath( s );
return CIsDirectory( ToString( TempStr ) & ASCII.NUL ) /= 0;
end IsDirectory;
function IsFile( s : APathName ) return boolean is
TempStr : str255;
begin
NoError;
TempStr := ExpandPath( s );
return CFileExists( ToString( TempStr ) & ASCII.NUL );
end IsFile;
procedure MakeTempFileName (S : out Str255) is
use Interfaces.C;
procedure CMksTemp (Result : out Int;
Template : in out Char_Array);
pragma Import (C, CMksTemp, "mkstemp" );
pragma Import_Valued_Procedure (Cmkstemp);
Template : Char_Array
:= To_C (ToString (ExpandPath (To255 ("$TMP/texttoolsXXXXXX"))));
Result : Int;
begin
Cmkstemp (Result, Template);
pragma Assert (Result /= -1);
S := To255 (To_Ada (Template));
end MakeTempFileName;
function Lock( file : APathName ) return boolean is
lockname : str255;
begin
lockname := Append( LockPath, ExpandPath( file ) );
SetInterface( lockname );
return LockIt = 0;
end Lock;
procedure Unlock( file : APathName ) is
lockname : str255;
begin
lockname := Append( LockPath, ExpandPath( file ) );
SetInterface( lockname );
UnlockIt;
end Unlock;
procedure ValidateFilename( fs : AFileSystem; oldfn : APathname;
newfn : in out APathname; errmsg : in out str255 ) is
ValidFilename : str255;
changed : boolean;
procedure ValidateUNIX is -- hastily assembled
ch : character;
s : string(1..1);
begin
-- length OK
-- leading character: no special requirements
for i in 1..length( oldfn ) loop
ch := Element( oldfn, i );
if ch < ' ' then -- control character?
ch := '_';
Changed := true;
elsif ch > '~' then -- control character?
ch := '_';
Changed := true;
--elsif ch <= 'A' then -- special character?
-- ch := '_';
-- Changed := true;
--elsif ch = '~' then
-- ch := '-';
-- Changed := true;
end if;
s(1) := ch;
ValidFilename := ValidFilename & s;
end loop;
if Changed then
newfn := ValidFilename;
ErrMsg := To255( "bad characters for UNIX filesystem" );
end if;
end ValidateUNIX;
procedure ValidateUNIX14 is
begin
if length( oldfn ) > 14 then
newfn := Head( oldfn, 14 );
Changed := true;
ErrMsg := To255( "too many characters for old UNIX filesystem" );
else
ValidateUNIX;
end if;
end ValidateUNIX14;
procedure ValidateDOS is
ch : character;
s : string(1..1);
begin
-- length checks no longer applicable with vfat
--if length(oldfn)>8 and then Element( oldfn,9 ) /= '.' then
-- NewFn := OldFn;
-- Insert( NewFn, 9, "." );
-- ErrMsg := To255( "too many characters for DOS" );
--elsif length( oldfn ) > 12 then
-- newfn := Head( oldfn, 12 );
-- Changed := true;
-- ErrMsg := To255( "too many characters for DOS" );
--else
for i in 1..length(oldfn) loop
ch := Element( oldfn, i );
if ch <= ' ' then
ch := '_';
Changed := true;
end if;
s(1) := ch;
ValidFilename := ValidFilename & s;
end loop;
if Changed then
NewFn := ValidFilename;
ErrMsg := To255( "bad characters for DOS" );
end if;
--end if;
end ValidateDOS;
procedure ValidateOS2 is
begin
ValidateUNIX; -- at least, for now
end ValidateOS2;
begin
ValidFilename := NullStr255;
ErrMsg := NullStr255;
Changed := false;
if length( oldfn ) = 0 then
Newfn := To255( "untitled" );
ErrMsg := To255( "No filename" );
else
case fs is
when UNIXFS => ValidateUNIX;
when UNIX14FS => ValidateUNIX14;
when DOSFS => ValidateDOS;
when OS2FS => ValidateOS2;
when NONE => null;
end case;
end if;
end ValidateFilename;
procedure ValidatePathname( fs : AFileSystem; oldfn : APathname;
newfn : in out APathname; errmsg : in out str255 ) is
SepChar : character;
SepCharAsString : string( 1..1 );
SepPos1 : integer;
SepPos2 : integer;
CorrectedFile : str255;
Piece2Validate : str255;
thefs : AFileSystem;
LastErrMsg : str255;
begin
newfn := NullStr255;
LastErrMsg := NullStr255;
ErrMsg := NullStr255;
case fs is
when UNIXFS => SepChar := '/';
thefs := UnixFS;
when UNIX14FS => SepChar := '/';
thefs := Unix14FS;
when DOSFS => SepChar := '\';
thefs := DosFS;
when OS2FS => SepChar := ':'; -- Is this right for OS/2?
thefs := OS2FS;
when NONE => -- guess at separator
if Index( oldfn, "/" ) > 0 then
SepChar := '/';
thefs := UnixFS;
elsif Index( oldfn, "\" ) > 0 then
SepChar := '\';
thefs := DosFS;
elsif Index( oldfn, ":" ) > 0 then
SepChar := ':';
thefs := OS2FS;
else
SepChar := '/'; -- guess UNIX by default
thefs := UnixFS;
end if;
end case;
SepCharAsString(1) := SepChar;
SepPos1 := Index( oldfn, SepCharAsString );
if SepPos1 = 0 then
ValidateFilename( fs, oldfn, newfn, Errmsg );
else
loop
SepPos2 := length( oldfn );
for i in SepPos1+1..length( oldfn ) loop
if Element( oldfn, i ) = SepChar then
SepPos2 := i;
exit;
end if;
end loop;
Piece2Validate := To255( Slice( oldfn, SepPos1+1, SepPos2-1 ) );
ValidateFilename( thefs, Piece2Validate, CorrectedFile, Lasterrmsg );
if length( CorrectedFile ) /= 0 then
newfn := newfn & SepChar & CorrectedFile;
if length( LastErrMsg ) > 0 then
ErrMsg := LastErrMsg;
end if;
else
newfn := newfn & SepChar & Piece2Validate;
end if;
exit when SepPos2 = length( oldfn );
SepPos1 := SepPos2;
end loop;
if length( ErrMsg ) = 0 then -- no errors? no changes
newfn := NullStr255;
end if;
end if;
end ValidatePathname;
procedure Erase( file : APathName ) is
CErr : integer;
begin
NoError;
CErr := CUnlink( ToString( ExpandPath( file ) ) & ASCII.NUL );
if CErr /= 0 then
SessionLog( "Erase: C error " & integer'image( CErr ) );
case CErr is
when 1 => Error( TT_FileAccess ); -- EPERM
when 2 => Error( TT_FileExistance ); -- ENOENT
when 13 => Error( TT_FileAccess ); -- EACCESS
when 20 => Error( TT_PathExistance ); -- ENOTDIR
when 30 => Error( TT_VolAccess ); -- EROFS
when others => Error( TT_SystemError ); -- EFAULT, etc.
end case;
end if;
end Erase;
procedure Trash( file : APathName ) is
-- remove a file to the trash can, erasing if necessary
trashstr : str255;
WasRaising : boolean;
begin
--NoError called in UNIX
WasRaising := RaisingErrors;
trashstr := To255( "mv " );
trashstr := Append( trashstr, ToString( ExpandPath( file ) ) );
trashstr := Append( trashstr, " $HOME/.Trash 2> /dev/null" );
TrapErrors;
UNIX( trashstr );
if WasRaising then
RaiseErrors;
end if;
if LastError /= TT_OK then
Erase( file );
end if;
end Trash;
procedure EmptyTrash is
begin
--NoError called in UNIX
UNIX( "find $HOME/.Trash -type f -mtime +3 -exec rm {} \;" );
end EmptyTrash;
procedure Move( file1, file2 : APathName ) is
movestr : str255;
begin
--NoError called in UNIX
movestr := To255( "mv " );
movestr := Append( movestr, ToString( ExpandPath( file1 ) ) );
movestr := Append( movestr, " " );
movestr := Append( movestr, ToString( ExpandPath( file2 ) ) );
movestr := Append( movestr, " 2> /dev/null" );
UNIX( movestr );
end Move;
function Shrink( file : APathName ) return APathName is
shrinkstr : str255;
begin
--NoError called in UNIX
--shrinkstr := To255( "zoo aPq " );
shrinkstr := To255( "gzip " );
shrinkstr := Append( shrinkstr, ToString( ExpandPath( file ) ) );
shrinkstr := Append( shrinkstr, " " );
shrinkstr := Append( shrinkstr, ToString( ExpandPath( file ) ) );
UNIX( shrinkstr );
if LastError = 0 then
shrinkstr := file;
shrinkstr := Append( shrinkstr, ".bak" );
Erase( shrinkstr );
end if;
if LastError = 0 then
--return Append( file, ".zoo" );
return Append( file, ".gz" );
else
return NullStr255;
end if;
end Shrink;
function Expand( file : APathName ) return APathName is
expandstr : str255;
begin
--NoError called in UNIX
--expandstr := To255( "zoo x//qO " );
expandstr := To255( "gunzip " );
expandstr := Append( expandstr, ToString( ExpandPath( file ) ) );
UNIX( expandstr );
if LastError = 0 then
return Head( file, length( file ) - 3 );
else
return NullStr255;
end if;
end Expand;
procedure Archive( arch, file : APathName ) is
ArchPath, FilePath, Cmd : str255;
-- note possibility of overflow here!
begin
--NoError called in UNIX
ArchPath := ExpandPath( arch );
FilePath := ExpandPath( file );
if not NotEmpty( FilePath ) then -- should really be not exists
Error( TT_FileExistance );
return;
end if;
--Cmd := To255( "zoo aunqP " ) & ArchPath & To255(" " ) & FilePath;
Cmd := To255( "tar cfz " ) & ArchPath & To255(" " ) & FilePath;
UNIX( Cmd );
end Archive;
procedure Extract( arch, file : APathName ) is
ArchPath, FilePath, Cmd : str255;
begin
-- NoError called in UNIX
ArchPath := ExpandPath( arch );
FilePath := ExpandPath( file );
if not NotEmpty( ArchPath ) then -- should really be not exists
Error( TT_FileExistance );
return;
end if;
--Cmd := ( To255( "zoo xqO ") & ArchPath & To255(" ") ) & ( FilePath
-- & " > /dev/null" );
Cmd := ( To255( "tar xfz ") & ArchPath & To255(" ") ) & ( FilePath
& " > /dev/null" );
UNIX( Cmd );
end Extract;
procedure Armour( file : APathName; keyfile : APathName := NullStr255 ) is
begin
null;
end Armour;
procedure Disarmour( file : APathName; keyfile : APathName := NullStr255 ) is
begin
null;
end Disarmour;
procedure Usage( file : APathName; me : AFileUsage := Normal;
us : AFileUsage := ReadOnly;
everyone : AFileUsage := ReadOnly ) is
accessstr : str255;
AccessCodeMe : character;
AccessCodeUs : character;
AccessCodeEveryone : character;
tempstr : APathName;
begin
--NoError called in UNIX
if me = ReadOnly or me = None then
AccessCodeMe := '4';
elsif me = Normal then
AccessCodeMe := '6';
elsif me = Run then
AccessCodeMe := '7';
else
AccessCodeMe := '0';
end if;
if us = ReadOnly then
AccessCodeUs := '4';
elsif us = Normal then
AccessCodeUs := '6';
elsif us = Run then
AccessCodeUs := '7';
else
AccessCodeUs := '0';
end if;
if everyone = ReadOnly then
AccessCodeEveryone := '4';
elsif everyone = Normal then
AccessCodeEveryone := '6';
elsif everyone = Run then
AccessCodeEveryone := '7';
else
AccessCodeEveryone := '0';
end if;
accessstr := To255( "chmod " );
accessstr := accessstr & AccessCodeMe & AccessCodeUs & AccessCodeEveryone;
TempStr := " " & ExpandPath( file );
accessstr := Append( accessstr, ToString( tempStr ), Ada.Strings.Right );
UNIX( accessstr );
end Usage;
procedure BeginSession is
begin
null;
end BeginSession;
procedure EndSession is
begin
null; -- sync
end EndSession;
---> Directory Utilities
function SpaceUsed( dir : APathName ) return long_integer is
expandstr : str255;
begin
--NoError called in UNIX
expandstr := To255( "du -fs " );
expandStr := expandStr & ExpandPath( dir );
return ToLongInteger( UNIX( expandStr ) );
end SpaceUsed;
---> Device Utilities
-- function SpaceFree( dev : APathName ) return long_integer is
-- pragma Unreferenced(Dev);
-- begin
-- return 1; -- NYI
-- end SpaceFree;
-- function TotalSpace( dev : APathName ) return long_integer is
-- pragma Unreferenced(Dev);
-- begin
-- return 1;
-- end TotalSpace;
-- function EntriesFree( dev : APathName ) return long_integer is
-- pragma Unreferenced(Dev);
-- begin
-- return 1;
-- end EntriesFree;
-- function TotalEntries( dev : APathname ) return long_integer is
-- pragma Unreferenced(Dev);
-- begin
-- return 1;
-- end TotalEntries;
-- function OnDevice( path : APathName ) return APathname is
-- pragma Unreferenced(Path);
-- begin
-- return NullStr255;
-- end OnDevice;
--->
function GetFreeClusterHost return str255 is
begin
return UNIX( "uname -n" );
end GetFreeClusterHost;
---> Str255Lists
procedure LoadList( path : APathName; StrList : in out Str255List.List ) is
-- load a string list to a file
Expandedpath : APathName;
f : file_type;
s : string(1..255);
-- 254 & EOL (won't take 255!) When I expanded it to 256,
-- it wouldn't load anything
l : natural;
begin
ExpandedPath := ExpandPath( path );
-- SessionLog( ToString( ExpandPath( path ) ) ); ---
Open( f, in_file, ToString( ExpandedPath ) );
while not End_of_File( f ) loop
Get_Line( f, s, l );
Str255List.Queue( StrList, Head( To255( s ), l ) );
end loop;
Close( f );
exception -- translate Text_IO errors into core errors
when Status_Error => Error( TT_FileLocking );
when Name_Error => Error( TT_FileExistance );
when Constraint_Error => raise; -- shouldn't happen, but...
when Storage_Error => Str255List.Clear( StrList );
Error( TT_LowMemory );
when others => Error( TT_IOError );
end LoadList;
procedure SaveList( path : APathName; StrList : in out Str255List.List ) is
-- save a string list to a file
f : file_type;
s : Str255;
Lines : Str255List.AListIndex;
TruePath : APathName;
begin
TruePath := ExpandPath( Path );
UNIX( "touch " & EscapePath( TruePath ) ); -- file must exist
Open( f, out_file, ToString( TruePath ) );
Lines := Str255List.length( StrList );
for i in 1..Lines loop
Str255List.Find( StrList, i, s );
Put_Line( f, ToString( s ) );
end loop;
Close( f );
exception -- translate Text_IO errors into core errors
when Status_Error => Error( TT_FileLocking );
when Name_Error => Error( TT_FileExistance );
when Constraint_Error => raise; -- shouldn't happen, but...
when others => Error( TT_IOError );
end SaveList;
function IsLocal return boolean is
begin
return IsLocaltty;
end IsLocal;
procedure SetPath( s : APathName ) is
begin
NoError;
SetInterface( ExpandPath( s ) );
if CSetPath /= 0 then
SessionLog( "SetPath: can't change path to " & s );
Put_line( standard_error, "SetPath: TT_SystemError -- can't change path" );
Error( TT_SystemError );
end if;
end SetPath;
function GetPath return APathName is
Dummy : CPathPtr;
pragma Unreferenced (Dummy);
begin
-- execute Linux getcwd (Get Current Working Directory) function
Dummy := Linux_getcwd( TempCPathPtr, TempCPath'length );
-- convert to a APathName and return result
return To255( To_Ada( TempCPath ) );
end GetPath;
--procedure SetPath( pn : APathNumber; path : APathName ) is
-- temp : APathName;
--begin
-- temp := path;
-- if Element( temp, Length( temp ) ) = '/' then
-- Delete( temp, Length( temp ), Length( temp ) );
-- end if;
-- PathList( pn ) := temp;
--end SetPath;
procedure PathAlias( alias : str255; path : APathName ) is
PathRec : APathListRecord;
Result : PathList.AListIndex;
IsNewAlias : boolean := true;
begin
NoError;
-- check to make sure that alias/path doesn't exist
if not PathList.IsEmpty( Paths ) then
-- locate first record with same alias (if any)
PathRec.alias := ToUpper( alias );
PathRec.path := NullStr255;
Result := 0;
for i in 1..PathList.length( Paths ) loop
-- pull record and make sure it's a different path
PathList.Find( Paths, i, PathRec );
if PathRec.Alias = ToUpper( alias ) then
IsNewAlias := false; -- alias exists
Result := i;
exit;
elsif PathRec.Alias > alias then
exit; -- missed it alphabetically, so it's new
end if;
end loop;
end if;
-- old entry? then delete it first
if not IsNewAlias then
PathList.Clear( Paths, Result );
end if;
-- add new entry (alphabetically) to path list
PathRec.alias := ToUpper( alias );
PathRec.path := path;
PathList.Insert( Paths, PathRec );
end PathAlias;
function ExpandPath( path : in APathName ) return APathName is
-- check for leading number and convert to a path
posn : integer;
result : APathName;
Alias : APathName;
PathRec : APathListRecord;
begin
Result := path;
if Length( Result ) > 0 then
if Element( Result, 1 ) = '$' then
posn := 1;
while Element( Result, posn ) /= '/' loop
posn := posn+1;
exit when posn > Length( path );
end loop;
if posn > Length( path ) then
Alias := Delete( ToUpper( path ), 1, 1 );
Result := NullStr255;
else
Alias := ToUpper( To255( Slice( Result, 2, posn-1 ) ) );
Delete( Result, 1, posn-1 );
end if;
for i in 1..PathList.length( Paths ) loop
PathList.Find( Paths, i, PathRec );
exit when PathRec.Alias > Alias;
if PathRec.Alias = Alias then
Result := PathRec.Path & Result;
end if;
end loop;
end if;
end if;
return Result;
end ExpandPath;
procedure SplitPath( path : Str255;
dir : out Str255; file : out Str255 ) is
-- split path into directory and file
SlashPos : natural := 0;
begin
for i in reverse 1..length( path ) loop
if Element( path, i ) = '/' then
SlashPos := i;
exit;
end if;
end loop;
if SlashPos > 0 then
Dir := To255( Slice( path, 1, SlashPos ) );
File := To255( Slice( path, SlashPos+1, length( path ) ) );
else
Dir := NullStr255;
File := NullStr255;
end if;
end SplitPath;
procedure DecomposePath( path : APathname; PathType : out APathType;
Host : out Str255; Filepath : out APathname ) is
SlashPos : natural;
TempPath : APathname;
begin
TempPath := ExpandPath( Path );
--
-- Check for a standard path--process and bail out if is one
--
if Index( TempPath, "://" ) = 0 then -- no ://?
PathType := File;
Host := To255( "localhost" ); -- then it's this machine
FilePath := TempPath; -- and it's the pathname
return; -- and bail out early
end if;
--
-- Must be a URL.
-- Check for the leading transfer method in the URL.
-- slice vs. head: slice returns an Ada string and saves a conversion.
--
if Slice( TempPath, 1, 7 ) = "file://" then -- is it a file://?
Delete( TempPath, 1, 7 ); -- then remove file:// part
PathType := File; -- we know it's a file URL
elsif Slice( Temppath, 1, 7 ) = "http://" then
Delete( TempPath, 1, 7 );
PathType := http;
elsif Slice( Temppath, 1, 6 ) = "ftp://" then
Delete( TempPath, 1, 6 );
PathType := ftp;
elsif Slice( Temppath, 1, 9 ) = "window://" then
Delete( TempPath, 1, 9 );
PathType := window;
elsif Slice( Temppath, 1, 6 ) = "run://" then
Delete( TempPath, 1, 6 );
PathType := runnable;
else
SlashPos := Index( TempPath, "://" ); -- we know there is one
Delete( TempPath, 1, SlashPos + 2 ); -- scrap unknown URL prefix
PathType := Unknown; -- and mark it as unknown
end if; -- and try to process anyway
--
-- all URL's are host and optional path
--
if Element( TempPath, length( TempPath ) ) = '/' then -- ending slash?
Delete( TempPath, length( TempPath), length( TempPath ) ); -- delete it
end if;
text_io.put_line( "checking " & ToString( TempPath ) );
SlashPos := Index( TempPath, "/" ); -- where's the next slash?
if SlashPos > 0 then -- if there is one
text_io.put_line("has path" );
Host := Head( TempPath, SlashPos-1 ); -- the address is before it
text_io.put_line("path = " & ToString( TempPath ) );
Delete( TempPath, 1, SlashPos ); -- removing it and slash
text_io.put_line("after host removal, path = " & ToString( TempPath ) );
FilePath := TempPath; -- leaves the path
else -- but if there isn't a slash
text_io.put_line("has no path" );
Host := TempPath; -- then it's just the address
FilePath := NullStr255; -- with no path
end if;
end DecomposePath;
---> Calandar Systems
function GetDate return str255 is
TempStr : Str255;
begin
CDate;
for i in 0..Interface_String'length loop
exit when Interface_String(i) = ASCII.NUL;
TempStr := TempStr & Interface_String(i);
end loop;
return TempStr;
end GetDate;
function GetTime return str255 is
TempStr : Str255;
begin
Ctime;
for i in 0..Interface_String'length loop
exit when Interface_String(i) = ASCII.NUL;
TempStr := TempStr & Interface_String(i);
end loop;
return TempStr;
end GetTime;
function GetTimeStamp return ATimeStamp is
Time : ATime;
TimeZone : ATimeZone;
TheStamp : ATimeStamp;
begin
GetClock( Time, TimeZone );
TheStamp := long_long_integer( time.seconds ) * 1_000_000 +
long_long_integer( time.microseconds );
return TheStamp;
end GetTimeStamp;
-- probably need to define comparision overloads
function GetLongDate return str255 is
TempStr : Str255;
begin
Clongdate;
for i in 0..Interface_String'length loop
exit when Interface_String(i) = ASCII.NUL;
TempStr := TempStr & Interface_String(i);
end loop;
return TempStr;
end GetLongDate;
---> Append for Text File
procedure AddFile( file, text : str255 ) is
begin
SetInterface( text );
CAppend( ToString( file ) & character'val(0) );
end AddFile;
---> Logging
procedure SessionLog( message : str255 ) is
WasRaising : boolean;
begin
NoError;
WasRaising := TrapErrors;
SetInterface( message );
CAddSessionLog;
RestoreRaising( WasRaising );
end SessionLog;
procedure SessionLog( ada_message : string ) is
begin
--NoError implied
SessionLog( message => To255( ada_message ) );
end SessionLog;
procedure SessionLog( message : str255; ErrorCode : AnErrorCode ) is
begin
--NoError implied
SessionLog( message => message & " (Error Code" &
AnErrorCode'image( ErrorCode ) & ")" );
end SessionLog;
procedure SessionLog( ada_message : string; ErrorCode : AnErrorCode ) is
begin
--NoError implied
SessionLog( To255( ada_message ), ErrorCode );
end SessionLog;
procedure Wait( seconds : float ) is
begin
-- no range check
CUSleep( long_integer( seconds * 1_000_000.0 ) );
end Wait;
end os;
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