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111
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1 -- CXAA003.A
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2 --
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3 -- Grant of Unlimited Rights
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4 --
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5 -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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6 -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
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7 -- unlimited rights in the software and documentation contained herein.
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8 -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
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9 -- this public release, the Government intends to confer upon all
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10 -- recipients unlimited rights equal to those held by the Government.
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11 -- These rights include rights to use, duplicate, release or disclose the
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12 -- released technical data and computer software in whole or in part, in
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13 -- any manner and for any purpose whatsoever, and to have or permit others
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14 -- to do so.
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15 --
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16 -- DISCLAIMER
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17 --
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18 -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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19 -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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20 -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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21 -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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22 -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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23 -- PARTICULAR PURPOSE OF SAID MATERIAL.
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24 --*
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25 --
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26 -- OBJECTIVE:
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27 -- Check that the procedures New_Page, Set_Line, Set_Col, and New_Line
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28 -- subprograms perform properly on a text file reset (from Out_File)
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29 -- with mode Append_File.
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30 -- Check that the attributes Page, Line, and Column are all set to 1
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31 -- following the reset of a text file with mode Append_File.
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32 -- Check that the functions Page, Line, and Col perform properly on a
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33 -- text file reset with mode Append_File.
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34 -- Check that the procedures Put and Put_Line perform properly on text
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35 -- files reset with mode Append_File.
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36 -- Check that the procedure Set_Line sets the current line number to
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37 -- the value specified by the parameter "To" for text files reset with
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38 -- mode Append_File. Check that Set_Line has no effect if the specified
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39 -- line equals the current line.
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40 -- Check that the procedure Set_Col sets the current column number to
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41 -- the value specified by the parameter "To" for text files reset with
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42 -- mode Append_File.
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43 --
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44 -- TEST DESCRIPTION:
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45 -- This test is designed to simulate the text processing that could
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46 -- occur with files that have been created in Out_File mode,
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47 -- and then reset to Append_File mode.
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48 -- Various calls to Text_IO formatting subprograms are called to properly
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49 -- position text appended to a document. The text content and position
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50 -- are subsequently verified for accuracy.
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51 --
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52 -- APPLICABILITY CRITERIA:
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53 -- This test is applicable only to implementations that support text
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54 -- files.
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55 --
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56 --
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57 -- CHANGE HISTORY:
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58 -- 06 Dec 94 SAIC ACVC 2.0
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59 -- 24 Feb 97 PWB.CTA Allowed for non-support of some IO operations.
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60 --!
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61
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62 with Ada.Text_IO;
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63 with Report;
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64
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65 procedure CXAA003 is
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66 use Ada;
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67 Data_File : Text_IO.File_Type;
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68 Data_Filename : constant String :=
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69 Report.Legal_File_Name ( Nam => "CXAA003" );
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70 Incomplete : exception;
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71
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72 begin
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73
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74 Report.Test ("CXAA003", "Check that page, line, and column formatting " &
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75 "subprograms perform properly on text files " &
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76 "reset with mode Append_File");
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77
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78 Test_for_Text_IO_Support:
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79 begin
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80
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81 -- An implementation that does not support Text_IO in a particular
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82 -- environment will raise Use_Error on calls to various
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83 -- Text_IO operations. This block statement encloses a call to
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84 -- Create, which should raise the exception in a non-supportive
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85 -- environment. This exception will be handled to produce a
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86 -- Not_Applicable result.
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87
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88 Text_IO.Create (File => Data_File,
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89 Mode => Text_IO.Out_File,
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90 Name => Data_Filename);
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91 exception
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92 when Text_IO.Use_Error | Text_IO.Name_Error =>
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93 Report.Not_Applicable
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94 ( "Text files not supported - Create as Out_File" );
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95 raise Incomplete;
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96 end Test_for_Text_IO_Support;
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97
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98 Operational_Test_Block:
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99 declare
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100
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101 Default_Position : constant Text_IO.Positive_Count := 1;
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102
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103 Section_Header : constant String := "IX. ";
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104 Glossary_Title : constant String := "GLOSSARY";
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105 Glossary_Content : constant String := "TBD";
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106
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107 -- The following procedure simulates the addition of a Glossary page
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108 -- to an existing text file that has been reset with mode
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109 -- Append_File.
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110
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111 procedure Position_Glossary_Text
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112 (The_File : in out Text_IO.File_Type) is
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113 use Text_IO; -- To provide visibility to the "/=" operator.
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114 begin
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115
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116 -- Test control code.
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117 -- Verify initial page value.
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118 if (Text_IO.Page (The_File) /= Default_Position) then
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119 Report.Failed ("Incorrect default page number");
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120 end if;
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121 -- Verify initial line number.
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122 if (Text_IO.Line (The_File) /= Default_Position) then
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123 Report.Failed ("Incorrect default line number");
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124 end if;
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125 -- Verify initial column number.
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126 if (Text_IO.Col (The_File) /= Default_Position) then
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127 Report.Failed ("Incorrect default column number");
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128 end if;
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129 -- Simulated usage code. Set new page/line positions.
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130 Text_IO.New_Page (The_File);
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131 Text_IO.New_Page (The_File);
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132 Text_IO.New_Line (File => The_File, Spacing => 1);
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133
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134 -- Test control code.
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135 if (Integer(Text_IO.Page(The_File)) /=
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136 Report.Ident_Int(3)) or else
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137 (Integer(Text_IO.Line (The_File)) /=
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138 Report.Ident_Int(2)) then
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139 Report.Failed ("Incorrect results from page/line positioning");
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140 end if;
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141
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142 -- Simulated usage code. Position title of Glossary.
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143 Text_IO.Put (The_File, Section_Header);
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144 Text_IO.Put_Line (The_File, Glossary_Title);
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145 -- Set line to the current line.
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146 Text_IO.Set_Line (File => The_File, To => 3);
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147
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148 -- Test control code.
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149 if (Integer(Text_IO.Page (The_File)) /= Report.Ident_Int(3)) or
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150 (Integer(Text_IO.Line (The_File)) /= Report.Ident_Int(3)) or
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151 (Integer(Text_IO.Col (The_File)) /= Report.Ident_Int(1)) then
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152 Report.Failed ("Set_Line failed for current line");
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153 end if;
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154
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155 -- Simulated usage code.
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156 Text_IO.Set_Line (File => The_File, To => 4); -- Set new
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157 Text_IO.Set_Col (File => The_File, To => 10); -- position.
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158
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159 -- Test control code.
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160 if (Integer(Text_IO.Line (The_File)) /= Report.Ident_Int(4)) or
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161 (Integer(Text_IO.Col (The_File)) /= Report.Ident_Int(10)) then
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162 Report.Failed
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163 ("Incorrect results from line/column positioning");
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164 end if;
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165
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166 -- Simulated usage code. -- Position
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167 Text_IO.Put_Line (The_File, Glossary_Content); -- content of
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168 -- Glossary.
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169 end Position_Glossary_Text;
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170
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171
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172 begin
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173
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174 -- In the scenario, data is added to the file here.
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175 Text_IO.Put_Line (File => Data_File, Item => "Some optional data");
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176
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177 -- This code section simulates a scenario that could occur in a
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178 -- text processing environment. Text is to be appended to an
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179 -- existing document:
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180 -- The file is reset to append mode.
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181 -- A procedure is called to perform the positioning and placement
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182 -- of text.
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183 -- The position on the appended page is set, verified, and text is
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184 -- placed in the file.
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185 --
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186 -- Note: The text file has been originally created in Out_File
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187 -- mode, and has subsequently been reset to Append_File mode.
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188
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189 Reset1:
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190 begin
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191 -- Reset has effect of calling New_Page.
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192 Text_IO.Reset (Data_File, Text_IO.Append_File);
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193 exception
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194 when Text_IO.Use_Error =>
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195 Report.Not_Applicable
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196 ( "Reset to Append_File not supported for Text_IO" );
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197 raise Incomplete;
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198 end Reset1;
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199
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200 Position_Glossary_Text (The_File => Data_File);
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201
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202 Test_Verification_Block:
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203 declare
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204 TC_Page, TC_Line, TC_Column : Text_IO.Positive_Count;
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205 TC_Position : Natural := 0;
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206 Blanks : constant String :=
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207 " ";
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208 TC_String : String (1 .. 15) := Blanks;
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209 begin
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210 Reset2:
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211 begin
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212 Text_IO.Reset (Data_File, Text_IO.In_File);
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213 exception
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214 when Text_IO.Use_Error =>
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215 Report.Not_Applicable
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216 ( "Reset to In_File not supported for Text_IO" );
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217 raise Incomplete;
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218 end Reset2;
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219
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220 Text_IO.Skip_Page (Data_File);
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221 Text_IO.Skip_Page (Data_File);
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222
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223 -- If the Reset to Append_File mode actually put a page terminator
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224 -- on the file, as allowed (but not required) by RM A.10.2(4), then
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225 -- we are now on page 3, an empty page. We'll need to skip one more.
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226
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227 if Text_IO.End_Of_Page (Data_File) then
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228 Text_IO.Skip_Page (Data_File);
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229 end if;
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230
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231 -- Now we're on the Glossary page.
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232
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233 -- Loop to the second line
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234 for I in 1 .. 2 loop -- and read the contents.
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235 Text_IO.Get_Line (Data_File, TC_String, TC_Position);
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236 end loop;
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237 if (TC_Position /= 13) or else -- Verify the title line.
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238 (TC_String (1..2) /= "IX") or else
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239 (TC_String (3..13) /= (". " & Glossary_Title)) then
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240 Report.Failed ("Incorrect positioning of title line");
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241 end if;
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242
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243 TC_String := Blanks; -- Clear string.
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244 -- Loop to the fourth line
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245 for I in 3 .. 4 loop -- and read the contents.
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246 Text_IO.Get_Line (Data_File, TC_String, TC_Position);
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247 end loop;
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248
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249 if (TC_Position /= 12) or -- Verify the contents.
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250 (TC_String (8..12) /= " " & Glossary_Content) then
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251 Report.Failed ("Incorrect positioning of contents line");
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252 end if;
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253
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254 exception
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255 when Incomplete =>
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256 raise;
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257 when others =>
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258 Report.Failed ("Error raised during data verification");
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259
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260 end Test_Verification_Block;
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261
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262 exception
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263 when Incomplete =>
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264 raise;
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265 when others =>
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266 Report.Failed ("Exception raised during Text_IO processing");
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267
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268 end Operational_Test_Block;
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269
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270 Final_Block:
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271 begin
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272 -- Delete the external file.
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273 if Text_IO.Is_Open (Data_File) then
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274 Text_IO.Delete (Data_File);
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275 else
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276 Text_IO.Open (Data_File, Text_IO.In_File, Data_Filename);
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277 Text_IO.Delete (Data_File);
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278 end if;
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279 exception
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280 when others =>
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281 Report.Failed ( "Delete not properly implemented for Text_IO" );
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282 end Final_Block;
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283
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284 Report.Result;
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285
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286 exception
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287 when Incomplete =>
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288 Report.Result;
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289 when others =>
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290 Report.Failed ( "Unexpected exception" );
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291 Report.Result;
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292
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293 end CXAA003;
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