Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnat/a-suteio.adb @ 111:04ced10e8804
gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | |
| children | 84e7813d76e9 |
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| 68:561a7518be6b | 111:04ced10e8804 |
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| 1 ------------------------------------------------------------------------------ | |
| 2 -- -- | |
| 3 -- GNAT RUN-TIME COMPONENTS -- | |
| 4 -- -- | |
| 5 -- A D A . S T R I N G S . U N B O U N D E D . T E X T _ I O -- | |
| 6 -- -- | |
| 7 -- B o d y -- | |
| 8 -- -- | |
| 9 -- Copyright (C) 1997-2017, Free Software Foundation, Inc. -- | |
| 10 -- -- | |
| 11 -- GNAT is free software; you can redistribute it and/or modify it under -- | |
| 12 -- terms of the GNU General Public License as published by the Free Soft- -- | |
| 13 -- ware Foundation; either version 3, or (at your option) any later ver- -- | |
| 14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- | |
| 15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
| 16 -- or FITNESS FOR A PARTICULAR PURPOSE. -- | |
| 17 -- -- | |
| 18 -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
| 19 -- additional permissions described in the GCC Runtime Library Exception, -- | |
| 20 -- version 3.1, as published by the Free Software Foundation. -- | |
| 21 -- -- | |
| 22 -- You should have received a copy of the GNU General Public License and -- | |
| 23 -- a copy of the GCC Runtime Library Exception along with this program; -- | |
| 24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
| 25 -- <http://www.gnu.org/licenses/>. -- | |
| 26 -- -- | |
| 27 -- GNAT was originally developed by the GNAT team at New York University. -- | |
| 28 -- Extensive contributions were provided by Ada Core Technologies Inc. -- | |
| 29 -- -- | |
| 30 ------------------------------------------------------------------------------ | |
| 31 | |
| 32 with Ada.Text_IO; use Ada.Text_IO; | |
| 33 | |
| 34 package body Ada.Strings.Unbounded.Text_IO is | |
| 35 | |
| 36 -------------- | |
| 37 -- Get_Line -- | |
| 38 -------------- | |
| 39 | |
| 40 function Get_Line return Unbounded_String is | |
| 41 Buffer : String (1 .. 1000); | |
| 42 Last : Natural; | |
| 43 Str1 : String_Access; | |
| 44 Str2 : String_Access; | |
| 45 Result : Unbounded_String; | |
| 46 | |
| 47 begin | |
| 48 Get_Line (Buffer, Last); | |
| 49 Str1 := new String'(Buffer (1 .. Last)); | |
| 50 while Last = Buffer'Last loop | |
| 51 Get_Line (Buffer, Last); | |
| 52 Str2 := new String (1 .. Str1'Last + Last); | |
| 53 Str2 (Str1'Range) := Str1.all; | |
| 54 Str2 (Str1'Last + 1 .. Str2'Last) := Buffer (1 .. Last); | |
| 55 Free (Str1); | |
| 56 Str1 := Str2; | |
| 57 end loop; | |
| 58 | |
| 59 Result.Reference := Str1; | |
| 60 Result.Last := Str1'Length; | |
| 61 return Result; | |
| 62 end Get_Line; | |
| 63 | |
| 64 function Get_Line (File : Ada.Text_IO.File_Type) return Unbounded_String is | |
| 65 Buffer : String (1 .. 1000); | |
| 66 Last : Natural; | |
| 67 Str1 : String_Access; | |
| 68 Str2 : String_Access; | |
| 69 Result : Unbounded_String; | |
| 70 | |
| 71 begin | |
| 72 Get_Line (File, Buffer, Last); | |
| 73 Str1 := new String'(Buffer (1 .. Last)); | |
| 74 while Last = Buffer'Last loop | |
| 75 Get_Line (File, Buffer, Last); | |
| 76 Str2 := new String (1 .. Str1'Last + Last); | |
| 77 Str2 (Str1'Range) := Str1.all; | |
| 78 Str2 (Str1'Last + 1 .. Str2'Last) := Buffer (1 .. Last); | |
| 79 Free (Str1); | |
| 80 Str1 := Str2; | |
| 81 end loop; | |
| 82 | |
| 83 Result.Reference := Str1; | |
| 84 Result.Last := Str1'Length; | |
| 85 return Result; | |
| 86 end Get_Line; | |
| 87 | |
| 88 procedure Get_Line (Item : out Unbounded_String) is | |
| 89 begin | |
| 90 Get_Line (Current_Input, Item); | |
| 91 end Get_Line; | |
| 92 | |
| 93 procedure Get_Line | |
| 94 (File : Ada.Text_IO.File_Type; | |
| 95 Item : out Unbounded_String) | |
| 96 is | |
| 97 begin | |
| 98 -- We are going to read into the string that is already there and | |
| 99 -- allocated. Hopefully it is big enough now, if not, we will extend | |
| 100 -- it in the usual manner using Realloc_For_Chunk. | |
| 101 | |
| 102 -- Make sure we start with at least 80 characters | |
| 103 | |
| 104 if Item.Reference'Last < 80 then | |
| 105 Realloc_For_Chunk (Item, 80); | |
| 106 end if; | |
| 107 | |
| 108 -- Loop to read data, filling current string as far as possible. | |
| 109 -- Item.Last holds the number of characters read so far. | |
| 110 | |
| 111 Item.Last := 0; | |
| 112 loop | |
| 113 Get_Line | |
| 114 (File, | |
| 115 Item.Reference (Item.Last + 1 .. Item.Reference'Last), | |
| 116 Item.Last); | |
| 117 | |
| 118 -- If we hit the end of the line before the end of the buffer, then | |
| 119 -- we are all done, and the result length is properly set. | |
| 120 | |
| 121 if Item.Last < Item.Reference'Last then | |
| 122 return; | |
| 123 end if; | |
| 124 | |
| 125 -- If not enough room, double it and keep reading | |
| 126 | |
| 127 Realloc_For_Chunk (Item, Item.Last); | |
| 128 end loop; | |
| 129 end Get_Line; | |
| 130 | |
| 131 --------- | |
| 132 -- Put -- | |
| 133 --------- | |
| 134 | |
| 135 procedure Put (U : Unbounded_String) is | |
| 136 begin | |
| 137 Put (U.Reference (1 .. U.Last)); | |
| 138 end Put; | |
| 139 | |
| 140 procedure Put (File : File_Type; U : Unbounded_String) is | |
| 141 begin | |
| 142 Put (File, U.Reference (1 .. U.Last)); | |
| 143 end Put; | |
| 144 | |
| 145 -------------- | |
| 146 -- Put_Line -- | |
| 147 -------------- | |
| 148 | |
| 149 procedure Put_Line (U : Unbounded_String) is | |
| 150 begin | |
| 151 Put_Line (U.Reference (1 .. U.Last)); | |
| 152 end Put_Line; | |
| 153 | |
| 154 procedure Put_Line (File : File_Type; U : Unbounded_String) is | |
| 155 begin | |
| 156 Put_Line (File, U.Reference (1 .. U.Last)); | |
| 157 end Put_Line; | |
| 158 | |
| 159 end Ada.Strings.Unbounded.Text_IO; |