-- CXAA016.A -- -- Grant of Unlimited Rights -- -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained -- unlimited rights in the software and documentation contained herein. -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making -- this public release, the Government intends to confer upon all -- recipients unlimited rights equal to those held by the Government. -- These rights include rights to use, duplicate, release or disclose the -- released technical data and computer software in whole or in part, in -- any manner and for any purpose whatsoever, and to have or permit others -- to do so. -- -- DISCLAIMER -- -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A -- PARTICULAR PURPOSE OF SAID MATERIAL. --* -- -- OBJECTIVE: -- Check that the type File_Access is available in Ada.Text_IO, and that -- objects of this type designate File_Type objects. -- Check that function Set_Error will set the current default error file. -- Check that versions of Ada.Text_IO functions Standard_Input, -- Standard_Output, Standard_Error return File_Access values designating -- the standard system input, output, and error files. -- Check that versions of Ada.Text_IO functions Current_Input, -- Current_Output, Current_Error return File_Access values designating -- the current system input, output, and error files. -- -- TEST DESCRIPTION: -- This test tests the use of File_Access objects in referring -- to File_Type objects, as well as several new functions that return -- File_Access objects as results. -- Four user-defined files are created. These files will be set to -- function as current system input, output, and error files. -- Data will be read from and written to these files during the -- time at which they function as the current system files. -- An array of File_Access objects will be defined. It will be -- initialized using functions that return File_Access objects -- referencing the Standard and Current Input, Output, and Error files. -- This "saves" the initial system environment, which will be modified -- to use the user-defined files as the current default Input, Output, -- and Error files. At the end of the test, the data in this array -- will be used to restore the initial system environment. -- -- APPLICABILITY CRITERIA: -- This test is applicable to implementations capable of supporting -- external Text_IO files. -- -- -- CHANGE HISTORY: -- 25 May 95 SAIC Initial prerelease version. -- 22 Apr 96 SAIC Incorporated reviewer comments for ACVC 2.1. -- 26 Feb 97 PWB.CTA Allowed for non-support of some IO operations. -- 18 Jan 99 RLB Repaired to allow Not_Applicable systems to -- fail delete. --! with Ada.Text_IO; package CXAA016_0 is New_Input_File, New_Output_File, New_Error_File_1, New_Error_File_2 : aliased Ada.Text_IO.File_Type; end CXAA016_0; with Report; with Ada.Exceptions; with Ada.Text_IO; use Ada.Text_IO; with CXAA016_0; use CXAA016_0; procedure CXAA016 is Non_Applicable_System : exception; No_Reset : exception; Not_Applicable_System : Boolean := False; procedure Delete_File ( A_File : in out Ada.Text_IO.File_Type; ID_Num : in Integer ) is begin if not Ada.Text_IO.Is_Open ( A_File ) then Ada.Text_IO.Open ( A_File, Ada.Text_IO.In_File, Report.Legal_File_Name ( ID_Num ) ); end if; Ada.Text_IO.Delete ( A_File ); exception when Ada.Text_IO.Name_Error => if Not_Applicable_System then null; -- File probably wasn't created. else Report.Failed ( "Can't open file for Text_IO" ); end if; when Ada.Text_IO.Use_Error => if Not_Applicable_System then null; -- File probably wasn't created. else Report.Failed ( "Delete not properly implemented for Text_IO" ); end if; when others => Report.Failed ( "Unexpected exception in Delete_File" ); end Delete_File; begin Report.Test ("CXAA016", "Check that the type File_Access is available " & "in Ada.Text_IO, and that objects of this " & "type designate File_Type objects"); Test_Block: declare use Ada.Exceptions; type System_File_Array_Type is array (Integer range <>) of File_Access; -- Fill the following array with the File_Access results of six -- functions. Initial_Environment : System_File_Array_Type(1..6) := ( Standard_Input, Standard_Output, Standard_Error, Current_Input, Current_Output, Current_Error ); New_Input_Ptr : File_Access := New_Input_File'Access; New_Output_Ptr : File_Access := New_Output_File'Access; New_Error_Ptr : File_Access := New_Error_File_1'Access; Line : String(1..80); Length : Natural := 0; Line_1 : constant String := "This is the first line in the Output file"; Line_2 : constant String := "This is the next line in the Output file"; Line_3 : constant String := "This is the first line in Error file 1"; Line_4 : constant String := "This is the next line in Error file 1"; Line_5 : constant String := "This is the first line in Error file 2"; Line_6 : constant String := "This is the next line in Error file 2"; procedure New_File (The_File : in out File_Type; Mode : in File_Mode; Next : in Integer) is begin Create (The_File, Mode, Report.Legal_File_Name(Next)); exception -- The following two exceptions may be raised if a system is not -- capable of supporting external Text_IO files. The handler will -- raise a user-defined exception which will result in a -- Not_Applicable result for the test. when Use_Error | Name_Error => raise Non_Applicable_System; end New_File; procedure Check_Initial_Environment (Env : System_File_Array_Type) is begin -- Check that the system has defined the following sources/ -- destinations for input/output/error, and that the six functions -- returning File_Access values are available. if not (Env(1) = Standard_Input and Env(2) = Standard_Output and Env(3) = Standard_Error and Env(4) = Current_Input and Env(5) = Current_Output and Env(6) = Current_Error) then Report.Failed("At the start of the test, the Standard and " & "Current File_Access values associated with " & "system Input, Output, and Error files do " & "not correspond"); end if; end Check_Initial_Environment; procedure Load_Input_File (Input_Ptr : in File_Access) is begin -- Load data into the file that will function as the user-defined -- system input file. Put_Line(Input_Ptr.all, Line_1); Put_Line(Input_Ptr.all, Line_2); Put_Line(Input_Ptr.all, Line_3); Put_Line(Input_Ptr.all, Line_4); Put_Line(Input_Ptr.all, Line_5); Put_Line(Input_Ptr.all, Line_6); end Load_Input_File; procedure Restore_Initial_Environment (Initial_Env : System_File_Array_Type) is begin -- Restore the Current Input, Output, and Error files to their -- original states. Set_Input (Initial_Env(4).all); Set_Output(Initial_Env(5).all); Set_Error (Initial_Env(6).all); -- At this point, the user-defined files that were functioning as -- the Current Input, Output, and Error files have been replaced in -- that capacity by the state of the original environment. declare -- Capture the state of the current environment. Current_Env : System_File_Array_Type (1..6) := (Standard_Input, Standard_Output, Standard_Error, Current_Input, Current_Output, Current_Error); begin -- Compare the current environment with that of the saved -- initial environment. if Current_Env /= Initial_Env then Report.Failed("Restored file environment was not the same " & "as the initial file environment"); end if; end; end Restore_Initial_Environment; procedure Verify_Files (O_File, E_File_1, E_File_2 : in File_Type) is Str_1, Str_2, Str_3, Str_4, Str_5, Str_6 : String (1..80); Len_1, Len_2, Len_3, Len_4, Len_5, Len_6 : Natural; begin -- Get the lines that are contained in all the files, and verify -- them against the expected results. Get_Line(O_File, Str_1, Len_1); -- The user defined output file Get_Line(O_File, Str_2, Len_2); -- should contain two lines of data. if Str_1(1..Len_1) /= Line_1 or Str_2(1..Len_2) /= Line_2 then Report.Failed("Incorrect results from Current_Output file"); end if; Get_Line(E_File_1, Str_3, Len_3); -- The first error file received Get_Line(E_File_1, Str_4, Len_4); -- two lines of data originally, Get_Line(E_File_1, Str_5, Len_5); -- then had two additional lines Get_Line(E_File_1, Str_6, Len_6); -- appended from the second error -- file. if Str_3(1..Len_3) /= Line_3 or Str_4(1..Len_4) /= Line_4 or Str_5(1..Len_5) /= Line_5 or Str_6(1..Len_6) /= Line_6 then Report.Failed("Incorrect results from first Error file"); end if; Get_Line(E_File_2, Str_5, Len_5); -- The second error file Get_Line(E_File_2, Str_6, Len_6); -- received two lines of data. if Str_5(1..Len_5) /= Line_5 or Str_6(1..Len_6) /= Line_6 then Report.Failed("Incorrect results from second Error file"); end if; end Verify_Files; begin Check_Initial_Environment (Initial_Environment); -- Create user-defined text files that will be set to serve as current -- system input, output, and error files. New_File (New_Input_File, Out_File, 1); -- Will be reset prior to use. New_File (New_Output_File, Out_File, 2); New_File (New_Error_File_1, Out_File, 3); New_File (New_Error_File_2, Out_File, 4); -- Enter several lines of text into the new input file. This file will -- be reset to mode In_File to function as the current system input file. -- Note: File_Access value used as parameter to this procedure. Load_Input_File (New_Input_Ptr); -- Reset the New_Input_File to mode In_File, to allow it to act as the -- current system input file. Reset1: begin Reset (New_Input_File, In_File); exception when Ada.Text_IO.Use_Error => Report.Not_Applicable ( "Reset to In_File not supported for Text_IO - 1" ); raise No_Reset; end Reset1; -- Establish new files that will function as the current system Input, -- Output, and Error files. Set_Input (New_Input_File); Set_Output(New_Output_Ptr.all); Set_Error (New_Error_Ptr.all); -- Perform various file processing tasks, exercising specific new -- Text_IO functionality. -- -- Read two lines from Current_Input and write them to Current_Output. for i in 1..2 loop Get_Line(Current_Input, Line, Length); Put_Line(Current_Output, Line(1..Length)); end loop; -- Read two lines from Current_Input and write them to Current_Error. for i in 1..2 loop Get_Line(Current_Input, Line, Length); Put_Line(Current_Error, Line(1..Length)); end loop; -- Reset the Current system error file. Set_Error (New_Error_File_2); -- Read two lines from Current_Input and write them to Current_Error. for i in 1..2 loop Get_Line(Current_Input, Line, Length); Put_Line(Current_Error, Line(1..Length)); end loop; -- At this point in the processing, the new Output file, and each of -- the two Error files, contain two lines of data. -- Note that New_Error_File_1 has been replaced by New_Error_File_2 -- as the current system error file, allowing New_Error_File_1 to be -- reset (Mode_Error raised otherwise). -- -- Reset the first Error file to Append_File mode, and then set it to -- function as the current system error file. Reset2: begin Reset (New_Error_File_1, Append_File); exception when Ada.Text_IO.Use_Error => Report.Not_Applicable ( "Reset to Append_File not supported for Text_IO - 2" ); raise No_Reset; end Reset2; Set_Error (New_Error_File_1); -- Reset the second Error file to In_File mode, then set it to become -- the current system input file. Reset3: begin Reset (New_Error_File_2, In_File); exception when Ada.Text_IO.Use_Error => Report.Not_Applicable ( "Reset to In_File not supported for Text_IO - 3" ); raise No_Reset; end Reset3; New_Error_Ptr := New_Error_File_2'Access; Set_Input (New_Error_Ptr.all); -- Append all of the text lines (2) in the new current system input -- file onto the current system error file. while not End_Of_File(Current_Input) loop Get_Line(Current_Input, Line, Length); Put_Line(Current_Error, Line(1..Length)); end loop; -- Restore the original system file environment, based upon the values -- stored at the start of this test. -- Check that the original environment has been restored. Restore_Initial_Environment (Initial_Environment); -- Reset all three files to In_File_Mode prior to verification. -- Note: If these three files had still been the designated Current -- Input, Output, or Error files for the system, a Reset -- operation at this point would raise Mode_Error. -- However, at this point, the environment has been restored to -- its original state, and these user-defined files are no longer -- designated as current system files, allowing a Reset. Reset4: begin Reset(New_Error_File_1, In_File); exception when Ada.Text_IO.Use_Error => Report.Not_Applicable ( "Reset to In_File not supported for Text_IO - 4" ); raise No_Reset; end Reset4; Reset5: begin Reset(New_Error_File_2, In_File); exception when Ada.Text_IO.Use_Error => Report.Not_Applicable ( "Reset to In_File not supported for Text_IO - 5" ); raise No_Reset; end Reset5; Reset6: begin Reset(New_Output_File, In_File); exception when Ada.Text_IO.Use_Error => Report.Not_Applicable ( "Reset to In_File not supported for Text_IO - 6" ); raise No_Reset; end Reset6; -- Check that all the files contain the appropriate data. Verify_Files (New_Output_File, New_Error_File_1, New_Error_File_2); exception when No_Reset => null; when Non_Applicable_System => Report.Not_Applicable("System not capable of supporting external " & "text files -- Name_Error/Use_Error raised " & "during text file creation"); Not_Applicable_System := True; when The_Error : others => Report.Failed ("The following exception was raised in the " & "Test_Block: " & Exception_Name(The_Error)); end Test_Block; Delete_Block: begin Delete_File ( New_Input_File, 1 ); Delete_File ( New_Output_File, 2 ); Delete_File ( New_Error_File_1, 3 ); Delete_File ( New_Error_File_2, 4 ); end Delete_Block; Report.Result; end CXAA016;