gcc/testsuite/ada/acats/tests/ce/ce3602a.ada

   1 -- CE3602A.ADA
   2
   3 --                             Grant of Unlimited Rights
   4 --
   5 --     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
   6 --     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
   7 --     unlimited rights in the software and documentation contained herein.
   8 --     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
   9 --     this public release, the Government intends to confer upon all
  10 --     recipients unlimited rights  equal to those held by the Government.
  11 --     These rights include rights to use, duplicate, release or disclose the
  12 --     released technical data and computer software in whole or in part, in
  13 --     any manner and for any purpose whatsoever, and to have or permit others
  14 --     to do so.
  15 --
  16 --                                    DISCLAIMER
  17 --
  18 --     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
  19 --     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
  20 --     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
  21 --     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
  22 --     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
  23 --     PARTICULAR PURPOSE OF SAID MATERIAL.
  24 --*
  25 -- OBJECTIVE:
  26 --     CHECK THAT GET FOR CHARACTERS AND STRINGS ALLOW A STRING TO SPAN
  27 --     OVER MORE THAN ONE LINE, SKIPPING INTERVENING LINE AND PAGE
  28 --     TERMINATORS.  ALSO CHECK THAT GET ACCEPTS A NULL STRING ACTUAL
  29 --     PARAMETER AND A STRING SLICE.
  30
  31 -- APPLICABILITY CRITERIA:
  32 --     THIS TEST IS APPLICABLE ONLY TO IMPLEMENTATIONS WHICH SUPPORT
  33 --     TEXT FILES.
  34
  35 -- HISTORY:
  36 --     SPS 08/30/82
  37 --     VKG 01/26/83
  38 --     JBG 02/22/84  CHANGED TO .ADA TEST
  39 --     RJW 11/04/86  REVISED TEST TO OUTPUT A NOT_APPLICABLE
  40 --                   RESULT WHEN FILES ARE NOT SUPPORTED.
  41 --     JLH 09/04/87  REMOVED DEPENDENCE ON RESET, CORRECTED EXCEPTION
  42 --                   HANDLING, AND ADDED NEW CASES FOR OBJECTIVE.
  43
  44
  45 WITH REPORT;
  46 USE REPORT;
  47 WITH TEXT_IO;
  48 USE TEXT_IO;
  49
  50 PROCEDURE CE3602A IS
  51      INCOMPLETE : EXCEPTION;
  52
  53 BEGIN
  54
  55      TEST ("CE3602A", "CHECK THAT GET FOR CHARACTERS AND STRINGS " &
  56                       "ALLOWS A STRING TO SPAN OVER MORE THAN ONE " &
  57                       "LINE, SKIPPING INTERVENING LINE AND PAGE " &
  58                       "TERMINATORS.  ALSO CHECK THAT GET ACCEPTS " &
  59                       "A NULL STRING ACTUAL PARAMETER AND A STRING " &
  60                       "SLICE");
  61
  62      DECLARE
  63           FILE1 : FILE_TYPE;
  64           ST : STRING (1 .. 40);
  65           STR: STRING (1 .. 100);
  66           NST: STRING (1 .. 0);
  67           ORIGINAL_LINE_LENGTH : COUNT;
  68
  69 -- READ_CHARS RETURNS A STRING OF N CHARACTERS FROM A GIVEN FILE.
  70
  71           FUNCTION READ_CHARS (FILE : FILE_TYPE;
  72                                N    : NATURAL )
  73                                RETURN STRING IS
  74           C: CHARACTER;
  75           BEGIN
  76                IF N = 0 THEN RETURN "";
  77                ELSE
  78                     GET (FILE,C);
  79                     RETURN C&READ_CHARS (FILE,N-1);
  80                END IF;
  81           EXCEPTION
  82                WHEN OTHERS =>
  83                     FAILED ("ERROR ON READ_CHARS");
  84           END READ_CHARS;
  85
  86
  87      BEGIN
  88
  89 -- CREATE AND INITIALIZE TEST DATA FILE
  90
  91           BEGIN
  92                CREATE (FILE1, OUT_FILE, LEGAL_FILE_NAME);
  93           EXCEPTION
  94                WHEN USE_ERROR =>
  95                     NOT_APPLICABLE ("USE_ERROR RAISED ON TEXT CREATE " &
  96                                     "WITH OUT_FILE MODE");
  97                     RAISE INCOMPLETE;
  98                WHEN NAME_ERROR =>
  99                     NOT_APPLICABLE ("NAME_ERROR RAISED ON TEXT " &
 100                                     "CREATE WITH OUT_FILE MODE");
 101                     RAISE INCOMPLETE;
 102                WHEN OTHERS =>
 103                     FAILED ("UNEXPECTED EXCEPTION RAISED ON " &
 104                             "TEXT CREATE");
 105                     RAISE INCOMPLETE;
 106           END;
 107
 108           ORIGINAL_LINE_LENGTH := LINE_LENGTH;
 109
 110 -- LINE_LENGTH SET IN CASE IMPLEMENTATION REQUIRES BOUNDED LENGTH LINES
 111
 112           SET_LINE_LENGTH (16);
 113           PUT (FILE1, "THIS LINE SHALL ");
 114           SET_LINE_LENGTH (10);
 115           PUT (FILE1, "SPAN OVER ");
 116           SET_LINE_LENGTH (14);
 117           PUT (FILE1, "SEVERAL LINES.");
 118           CLOSE (FILE1);
 119           SET_LINE_LENGTH (ORIGINAL_LINE_LENGTH);
 120
 121
 122 -- BEGIN TEST
 123
 124           BEGIN
 125
 126                BEGIN
 127                     OPEN (FILE1, IN_FILE, LEGAL_FILE_NAME);
 128                EXCEPTION
 129                     WHEN USE_ERROR =>
 130                          NOT_APPLICABLE ("USE_ERROR RAISED ON TEXT " &
 131                                          "OPEN WITH IN_FILE MODE - 1");
 132                          RAISE INCOMPLETE;
 133                END;
 134
 135                STR(1..40) := READ_CHARS (FILE1, 40);
 136                CLOSE (FILE1);
 137
 138                OPEN (FILE1, IN_FILE, LEGAL_FILE_NAME);
 139
 140                GET (FILE1, ST);
 141                IF STR(1..40) /= ST THEN
 142                     FAILED ("GET FOR STRING INCORRECT");
 143                END IF;
 144
 145                IF STR(1..40) /= "THIS LINE SHALL SPAN OVER SEVERAL " &
 146                                 "LINES." THEN
 147                     FAILED ("INCORRECT VALUE READ");
 148                END IF;
 149
 150 -- GET NULL STRING
 151
 152                CLOSE (FILE1);
 153
 154                OPEN (FILE1, IN_FILE, LEGAL_FILE_NAME);
 155
 156                BEGIN
 157                     GET (FILE1, NST);
 158                EXCEPTION
 159                     WHEN OTHERS =>
 160                          FAILED (" GET FAILED ON NULL STRING");
 161                END;
 162
 163 -- GET NULL SLICE
 164
 165                BEGIN
 166                     GET (FILE1, STR (10 .. 1));
 167                EXCEPTION
 168                     WHEN OTHERS =>
 169                          FAILED ("GET FAILED ON A NULL SLICE");
 170                END;
 171
 172                BEGIN
 173                     DELETE (FILE1);
 174                EXCEPTION
 175                     WHEN USE_ERROR =>
 176                          NULL;
 177                END;
 178
 179           END;
 180
 181      EXCEPTION
 182           WHEN INCOMPLETE =>
 183                NULL;
 184
 185      END;
 186
 187      RESULT;
 188
 189 END CE3602A;