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197 | -- -*- coding: utf-8 -*-
--
-- ZanyBlue, an Ada library and framework for finite element analysis.
--
-- Copyright (c) 2016, Michael Rohan <mrohan@zanyblue.com>
-- All rights reserved.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions
-- are met:
--
-- * Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
--
-- * Redistributions in binary form must reproduce the above copyright
-- notice, this list of conditions and the following disclaimer in the
-- documentation and/or other materials provided with the distribution.
--
-- * Neither the name of ZanyBlue nor the names of its contributors may
-- be used to endorse or promote products derived from this software
-- without specific prior written permission.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-- HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
-- TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
--
--
-- Example using Codecs type to convert an input file with a source
-- encoding to an output file with a target encoding.
--
with Ada.Directories;
with Ada.Direct_IO;
with Ada.Strings.Wide_Unbounded;
with Messages.Econv_Prints;
with Messages.Econv_Exceptions;
with ZanyBlue.Wide_Command_Line;
with ZanyBlue.Text.Codecs;
with ZanyBlue.Text.Locales;
with ZanyBlue.Text.Formatting;
procedure ZBX_Econv is
use Ada.Directories;
use Ada.Strings.Wide_Unbounded;
use Messages.Econv_Prints;
use Messages.Econv_Exceptions;
use ZanyBlue.Text;
use ZanyBlue.Text.Codecs;
use ZanyBlue.Text.Locales;
use ZanyBlue.Wide_Command_Line;
use ZanyBlue.Text.Formatting;
procedure Process_Command_Line;
Input_Codecs : Codecs_Type := Current_Locale.Codecs;
Input_Name : Unbounded_Wide_String;
Output_Codecs : Codecs_Type := Current_Locale.Codecs;
Output_Name : Unbounded_Wide_String;
Usage_Error, Help_Error : exception;
function Read_File (File_Name : Unbounded_Wide_String) return String;
procedure Write_File (File_Name : Unbounded_Wide_String;
Data : String);
function Get_Opt_Value (Index : Positive; Option : String)
return Unbounded_Wide_String;
function Get_Opt_Value (Index : Positive; Option : String)
return String;
-------------------
-- Get_Opt_Value --
-------------------
function Get_Opt_Value (Index : Positive; Option : String)
return String is
begin
return To_Wide_String (Get_Opt_Value (Index, Option));
end Get_Opt_Value;
-------------------
-- Get_Opt_Value --
-------------------
function Get_Opt_Value (Index : Positive; Option : String)
return Unbounded_Wide_String
is
begin
if Index <= Wide_Argument_Count then
return To_Unbounded_Wide_String (Wide_Argument (Index));
else
Raise_00006 (Usage_Error'Identity, +Option);
end if;
end Get_Opt_Value;
--------------------------
-- Process_Command_Line --
--------------------------
procedure Process_Command_Line is
Index : Positive := 1;
begin
while Index <= Wide_Argument_Count loop
declare
Option : constant String := Wide_Argument (Index);
begin
if Option = "-f" then
Index := Index + 1;
Input_Codecs := Make_Codecs (Get_Opt_Value (Index, "-f"));
elsif Option = "-t" then
Index := Index + 1;
Output_Codecs := Make_Codecs (Get_Opt_Value (Index, "-t"));
elsif Input_Name = Null_Unbounded_Wide_String then
Input_Name := To_Unbounded_Wide_String (Wide_Argument (Index));
elsif Output_Name = Null_Unbounded_Wide_String then
Output_Name := To_Unbounded_Wide_String (Wide_Argument (Index));
elsif Option = "-h" then
raise Help_Error;
else
raise Usage_Error;
end if;
end;
Index := Index + 1;
end loop;
if Input_Name = Null_Unbounded_Wide_String then
Print_00007;
raise Usage_Error;
end if;
if Output_Name = Null_Unbounded_Wide_String then
Print_00008;
raise Usage_Error;
end if;
end Process_Command_Line;
---------------
-- Read_File --
---------------
function Read_File (File_Name : Unbounded_Wide_String) return String is
File_Name_S : constant String := To_UTF_8 (To_Wide_String (File_Name));
File_Size : constant Natural := Natural (Size (File_Name_S));
subtype Element_Type is String (1 .. File_Size);
package File_IO is new Ada.Direct_IO (Element_Type);
Input : File_IO.File_Type;
Result : Element_Type;
begin
File_IO.Open (Input, File_IO.In_File, File_Name_S);
File_IO.Read (Input, Result);
File_IO.Close (Input);
return Result;
end Read_File;
----------------
-- Write_File --
----------------
procedure Write_File (File_Name : Unbounded_Wide_String;
Data : String) is
File_Name_S : constant String := To_UTF_8 (To_Wide_String (File_Name));
subtype Element_Type is String (Data'Range);
package File_IO is new Ada.Direct_IO (Element_Type);
Output : File_IO.File_Type;
begin
File_IO.Create (Output, File_IO.Out_File, File_Name_S);
File_IO.Write (Output, Data);
File_IO.Close (Output);
end Write_File;
begin
Print_00001 (+ZanyBlue.Version_Major, +ZanyBlue.Version_Minor,
+ZanyBlue.Version_Patch);
Print_00002;
-- Raise exceptions for unknown encodings and invalid data
-- Set_Unsupported_Encoding_Action (Raise_Exception);
Process_Command_Line;
-- Print_Argument (+Input_Codecs.Name);
-- Print_Argument (+Input_Name);
-- Print_Argument (+Output_Codecs.Name);
-- Print_Argument (+Output_Name);
Set_Unicode_Encode_Action (Raise_Exception);
Set_Unicode_Decode_Action (Raise_Exception);
Write_File (Output_Name,
Output_Codecs.Encode (Input_Codecs.Decode (Read_File (Input_Name))));
exception
when Help_Error =>
Print_00004;
when Usage_Error =>
Print_00005;
end ZBX_Econv;
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