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172 | -----------------------------------------------------------------------
-- wiki-streams-text_io -- Text_IO input output streams
-- Copyright (C) 2016, 2022 Stephane Carrez
-- Written by Stephane Carrez (Stephane.Carrez@gmail.com)
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
-----------------------------------------------------------------------
with Ada.IO_Exceptions;
with Wiki.Helpers;
package body Wiki.Streams.Text_IO is
-- ------------------------------
-- Open the file and prepare to read the input stream.
-- ------------------------------
procedure Open (Stream : in out File_Input_Stream;
Path : in String;
Form : in String := "") is
begin
Ada.Wide_Wide_Text_IO.Open (Stream.File, Ada.Wide_Wide_Text_IO.In_File, Path, Form);
Stream.Stdin := False;
end Open;
-- ------------------------------
-- Close the file.
-- ------------------------------
procedure Close (Stream : in out File_Input_Stream) is
begin
if Ada.Wide_Wide_Text_IO.Is_Open (Stream.File) then
Ada.Wide_Wide_Text_IO.Close (Stream.File);
end if;
end Close;
-- ------------------------------
-- Close the stream.
-- ------------------------------
overriding
procedure Finalize (Stream : in out File_Input_Stream) is
begin
Stream.Close;
end Finalize;
-- ------------------------------
-- Read the input stream and fill the `Into` buffer until either it is full or
-- we reach the end of line. Returns in `Last` the last valid position in the
-- `Into` buffer. When there is no character to read, return True in
-- the `Eof` indicator.
-- ------------------------------
overriding
procedure Read (Input : in out File_Input_Stream;
Into : in out Wiki.Strings.WString;
Last : out Natural;
Eof : out Boolean) is
begin
if Input.Stdin then
if not Ada.Wide_Wide_Text_IO.End_Of_File then
Ada.Wide_Wide_Text_IO.Get_Line (Into, Last);
if Last < Into'Last then
Into (Last + 1) := Helpers.LF;
Last := Last + 1;
end if;
Eof := False;
else
Last := Into'First - 1;
Eof := True;
end if;
else
if not Ada.Wide_Wide_Text_IO.End_Of_File (Input.File) then
Ada.Wide_Wide_Text_IO.Get_Line (Input.File, Into, Last);
if Last < Into'Last then
Into (Last + 1) := Helpers.LF;
Last := Last + 1;
end if;
Eof := False;
else
Last := Into'First - 1;
Eof := True;
end if;
end if;
exception
when Ada.IO_Exceptions.End_Error =>
Last := Into'First - 1;
Eof := True;
end Read;
-- ------------------------------
-- Open the file and prepare to write the output stream.
-- ------------------------------
procedure Open (Stream : in out File_Output_Stream;
Path : in String;
Form : in String := "") is
begin
if Ada.Wide_Wide_Text_IO.Is_Open (Stream.File) then
Ada.Wide_Wide_Text_IO.Close (Stream.File);
end if;
Ada.Wide_Wide_Text_IO.Open (Stream.File, Ada.Wide_Wide_Text_IO.Out_File, Path, Form);
Ada.Wide_Wide_Text_IO.Set_Line_Length (Ada.Wide_Wide_Text_IO.Count'Last);
Stream.Stdout := False;
end Open;
-- ------------------------------
-- Create the file and prepare to write the output stream.
-- ------------------------------
procedure Create (Stream : in out File_Output_Stream;
Path : in String;
Form : in String := "") is
begin
Ada.Wide_Wide_Text_IO.Create (Stream.File, Ada.Wide_Wide_Text_IO.Out_File, Path, Form);
Ada.Wide_Wide_Text_IO.Set_Line_Length (Ada.Wide_Wide_Text_IO.Count'Last);
Stream.Stdout := False;
end Create;
-- ------------------------------
-- Close the file.
-- ------------------------------
procedure Close (Stream : in out File_Output_Stream) is
begin
if Ada.Wide_Wide_Text_IO.Is_Open (Stream.File) then
Ada.Wide_Wide_Text_IO.Close (Stream.File);
end if;
end Close;
-- ------------------------------
-- Write the string to the output stream.
-- ------------------------------
overriding
procedure Write (Stream : in out File_Output_Stream;
Content : in Wiki.Strings.WString) is
begin
if not Stream.Stdout then
Ada.Wide_Wide_Text_IO.Put (Stream.File, Content);
else
Ada.Wide_Wide_Text_IO.Put (Content);
end if;
end Write;
-- ------------------------------
-- Write a single character to the output stream.
-- ------------------------------
overriding
procedure Write (Stream : in out File_Output_Stream;
Char : in Wiki.Strings.WChar) is
begin
if not Stream.Stdout then
Ada.Wide_Wide_Text_IO.Put (Stream.File, Char);
else
Ada.Wide_Wide_Text_IO.Put (Char);
end if;
end Write;
-- ------------------------------
-- Close the stream.
-- ------------------------------
overriding
procedure Finalize (Stream : in out File_Output_Stream) is
begin
Stream.Close;
end Finalize;
end Wiki.Streams.Text_IO;
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