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file_managerB.a
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1991-07-22
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--------------------------
-- file_managerB.a
--------------------------
-- Copyright (c) 1990 Regents of the University of California.
-- All rights reserved.
--
-- This software was developed by John Self of the Arcadia project
-- at the University of California, Irvine.
--
-- Redistribution and use in source and binary forms are permitted
-- provided that the above copyright notice and this paragraph are
-- duplicated in all such forms and that any documentation,
-- advertising materials, and other materials related to such
-- distribution and use acknowledge that the software was developed
-- by the University of California, Irvine. The name of the
-- University may not be used to endorse or promote products derived
-- from this software without specific prior written permission.
-- THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
-- IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
-- WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-- TITLE external_file_manager
-- AUTHOR: John Self (UCI)
-- DESCRIPTION opens external files for other functions
-- NOTES This package opens external files, and thus may be system dependent
-- because of limitations on file names.
-- This version is for the VADS 5.5 Ada development system.
-- $Header: /co/ua/self/arcadia/aflex/ada/src/RCS/file_managerB.a,v 1.5 90/01/12 15:19:58 self Exp Locker: self $
-- History
-- 14-Jun-1991 Rolf EBERT
-- added body of Standard_Error.
-- declaration of Ada_Suffix as a constant String.
with MISC_DEFS, TSTRING, TEXT_IO, MISC; use MISC_DEFS, TSTRING, TEXT_IO, MISC;
package body EXTERNAL_FILE_MANAGER is
-- FIX comment about compiler dependent
-- subtype SUFFIX_TYPE is STRING(1 .. 1);
--
-- function ADA_SUFFIX return SUFFIX_TYPE is
-- begin
-- return "a";
-- end ADA_SUFFIX;
Ada_Suffix : constant String := "a"; -- isn't it easier?
Std_Err : File_Type;
function Standard_Error return File_Type is
begin
return Std_Err;
end Standard_Error;
procedure GET_IO_FILE(F : in out FILE_TYPE) is
begin
if (LEN(INFILENAME) /= 0) then
CREATE(F, OUT_FILE, STR(MISC.BASENAME) & "_io." & ADA_SUFFIX);
else
CREATE(F, OUT_FILE, "aflex_yy_io." & ADA_SUFFIX);
end if;
exception
when USE_ERROR | NAME_ERROR =>
MISC.AFLEXFATAL("could not create IO package file");
end GET_IO_FILE;
procedure GET_DFA_FILE(F : in out FILE_TYPE) is
begin
if (LEN(INFILENAME) /= 0) then
CREATE(F, OUT_FILE, STR(MISC.BASENAME) & "_dfa." & ADA_SUFFIX);
else
CREATE(F, OUT_FILE, "aflex_yy_dfa." & ADA_SUFFIX);
end if;
exception
when USE_ERROR | NAME_ERROR =>
MISC.AFLEXFATAL("could not create DFA package file");
end GET_DFA_FILE;
procedure GET_SCANNER_FILE(F : in out FILE_TYPE) is
OUTFILE_NAME : VSTRING;
begin
if (LEN(INFILENAME) /= 0) then
-- give out infile + ada_suffix
OUTFILE_NAME := MISC.BASENAME & "." & ADA_SUFFIX;
else
OUTFILE_NAME := VSTR("aflex_yy." & ADA_SUFFIX);
end if;
CREATE(F, OUT_FILE, STR(OUTFILE_NAME));
SET_OUTPUT(F);
exception
when NAME_ERROR | USE_ERROR =>
MISC.AFLEXFATAL("can't create scanner file " & OUTFILE_NAME);
end GET_SCANNER_FILE;
procedure GET_BACKTRACK_FILE(F : in out FILE_TYPE) is
begin
CREATE(F, OUT_FILE, "aflex.backtrack");
exception
when USE_ERROR | NAME_ERROR =>
MISC.AFLEXFATAL("could not create backtrack file");
end GET_BACKTRACK_FILE;
procedure Initialize_Files is
begin
Create(Std_Err, Out_File, "/dev/tty");
exception
when Use_Error | Name_Error =>
Misc.Aflexfatal("could not create standard_error as /dev/tty");
end Initialize_Files;
end EXTERNAL_FILE_MANAGER;