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410 | -- -*- coding: utf-8 -*-
--
-- ZanyBlue, an Ada library and framework for finite element analysis.
--
-- Copyright (c) 2012, 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.
--
with Ada.Exceptions;
with Ada.Characters.Latin_1;
with Ada.Characters.Handling;
with Ada.Containers.Indefinite_Hashed_Maps;
with UXStrings.Text_IO.Text_Streams;
with ZanyBlue.OS;
with ZanyBlue.Text.Utils;
with UXStrings.Hash;
package body ZanyBlue.Text.Properties_Parser is
use Ada.Exceptions;
use Ada.Characters.Latin_1;
use Ada.Characters.Handling;
use UXStrings.Text_IO.Text_Streams;
use ZanyBlue.OS;
use ZanyBlue.Text.Utils;
------------------
-- Get_N_Errors --
------------------
function Get_N_Errors
(Handler : Parser_Handler_Type)
return Natural
is
begin
return Handler.N_Errors;
end Get_N_Errors;
--------------------
-- Get_N_Messages --
--------------------
function Get_N_Messages
(Handler : Parser_Handler_Type)
return Natural
is
begin
return Handler.N_Messages;
end Get_N_Messages;
----------------------
-- Increment_Errors --
----------------------
procedure Increment_Errors
(Handler : in out Parser_Handler_Type;
By_Amount : Natural := 1)
is
begin
Handler.N_Errors := Handler.N_Errors + By_Amount;
end Increment_Errors;
------------------------
-- Increment_Messages --
------------------------
procedure Increment_Messages (Handler : in out Parser_Handler_Type) is
begin
Handler.N_Messages := Handler.N_Messages + 1;
end Increment_Messages;
-----------
-- Parse --
-----------
procedure Parse
(Handler : in out Parser_Handler_Type'Class;
File_Name : String;
Facility : String;
Locale : Locale_Type)
is
begin
Parse (Handler, File_Name, Facility, Locale, Locale);
end Parse;
-----------
-- Parse --
-----------
procedure Parse
(Handler : in out Parser_Handler_Type'Class;
File_Name : String;
Facility : String;
Locale : Locale_Type;
Source_Locale : Locale_Type)
is
Source_File : UXStrings.Text_IO.File_Type;
Opened : Boolean := False;
begin
Open (Source_File, UXStrings.Text_IO.In_File, File_Name);
Opened := True;
Parse (Handler, Source_File, File_Name, Facility, Locale, Source_Locale);
UXStrings.Text_IO.Close (Source_File);
exception
when others =>
if Opened then
UXStrings.Text_IO.Close (Source_File);
end if;
raise;
end Parse;
-----------
-- Parse --
-----------
procedure Parse
(Handler : in out Parser_Handler_Type'Class;
Source_File : in out UXStrings.Text_IO.File_Type;
File_Name : String;
Facility : String;
Locale : Locale_Type)
is
begin
Parse (Handler, Source_File, File_Name, Facility, Locale, Locale);
end Parse;
-----------
-- Parse --
-----------
procedure Parse
(Handler : in out Parser_Handler_Type'Class;
Source_File : in out UXStrings.Text_IO.File_Type;
File_Name : String;
Facility : String;
Locale : Locale_Type;
Source_Locale : Locale_Type)
is
package Key_To_Line_Maps is new Ada.Containers.Indefinite_Hashed_Maps
(Key_Type => String, Element_Type => Natural, Equivalent_Keys => "=",
Hash => UXStrings.Hash);
Key_Definitions : Key_To_Line_Maps.Map;
Source_Stream : Stream_Access;
Cur_Character : Character;
Cur_Key : String;
Cur_Value : String;
Cur_Line : Natural := 1;
Def_Line : Positive := 1;
procedure Kill_Line;
-- Kill, ignore, a line when an error has been encountered.
procedure New_Message
(Key : String;
Value : String);
-- Perform the call back to define a new key/value pair.
function Next
(Require_ISO_646 : Boolean := True)
return Character;
-- Return the next character from the input stream.
---------------
-- Kill_Line --
---------------
procedure Kill_Line is
begin
Line_Characters :
loop
case Next (Require_ISO_646 => False) is
when LF | CR | EOT =>
exit Line_Characters;
when others =>
null;
end case;
end loop Line_Characters;
end Kill_Line;
-----------------
-- New_Message --
-----------------
procedure New_Message
(Key : String;
Value : String)
is
use Key_To_Line_Maps;
Position : constant Cursor := Find (Key_Definitions, Key);
WKey : constant String := Key;
begin
if Position /= No_Element then
Handler.Increment_Errors;
Handler.Duplicate_Key
(Facility, WKey, Locale, File_Name, Def_Line,
Element (Position));
end if;
Handler.Increment_Messages;
Handler.Add_Key_Value
(Facility, WKey, Unescape_String (Value), Locale, Source_Locale,
File_Name, Def_Line);
Include (Key_Definitions, Key, Def_Line);
end New_Message;
----------
-- Next --
----------
function Next
(Require_ISO_646 : Boolean := True)
return Character
is
begin
if not UXStrings.Text_IO.End_Of_File (Source_File) then
Character'Read (Source_Stream, Cur_Character);
if Require_ISO_646 and then not Is_ISO_646 (Cur_Character) then
Handler.Increment_Errors;
Handler.Invalid_Character
(Facility, File_Name, Cur_Line, Cur_Character);
end if;
else
Cur_Character := EOT;
end if;
if Cur_Character = LF then
Cur_Line := Cur_Line + 1;
end if;
return Cur_Character;
end Next;
begin
Source_Stream := Stream (Source_File);
<<Start>>
case Next is
when EOT =>
goto EOF;
when Space | HT | VT | FF =>
goto Start;
when LF | CR =>
goto Start;
when '#' =>
goto Comment;
when others =>
Cur_Key := From_Latin_1 (Cur_Character);
Cur_Value := "";
goto Key;
end case;
<<Key>>
Def_Line := Cur_Line;
case Next is
when '\' =>
goto Key_Escape;
when CR | LF | EOT =>
goto Finish;
when Space | HT | VT | FF =>
goto Key_End_1;
when ':' | '=' =>
goto Key_End_2;
when others =>
Append (Cur_Key, From_Latin_1 (Cur_Character));
goto Key;
end case;
<<Key_Escape>>
case Next is
when 'r' =>
Append (Cur_Key, From_Latin_1 (CR));
goto Key;
when 'n' =>
Append (Cur_Key, From_Latin_1 (LF));
goto Key;
when others =>
Append (Cur_Key, From_Latin_1 (Cur_Character));
goto Key;
end case;
<<Key_End_1>>
case Next is
when LF | CR | EOT =>
goto Finish;
when Space | HT | VT | FF =>
goto Key_End_1;
when '=' | ':' =>
goto Key_End_2;
when others =>
goto Value;
end case;
<<Key_End_2>>
case Next is
when LF | CR | EOT =>
goto Finish;
when Space | HT | VT | FF =>
goto Key_End_2;
when '\' =>
goto Value_Escape;
when others =>
goto Value;
end case;
<<Value>>
Append (Cur_Value, From_Latin_1 (Cur_Character));
case Next is
when CR | LF | EOT =>
goto Finish;
when '\' =>
goto Value_Escape;
when others =>
goto Value;
end case;
<<Value_Escape>>
case Next is
when CR =>
goto Value_Escape_CR;
when LF =>
goto Value_Escape_LF;
when others =>
Append (Cur_Value, '\');
goto Value;
end case;
<<Value_Escape_CR>>
case Next is
when LF | Space | HT =>
goto Value_Escape_Space;
when others =>
goto Value;
end case;
<<Value_Escape_LF>>
case Next is
when CR | Space | HT =>
goto Value_Escape_Space;
when others =>
goto Value;
end case;
<<Value_Escape_Space>>
case Next is
when Space | HT =>
goto Value_Escape_Space;
when LF | CR =>
goto Finish;
when others =>
goto Value;
end case;
<<Comment>>
Kill_Line;
goto Start;
<<Finish>>
New_Message (Cur_Key, Cur_Value);
goto Start;
<<EOF>>
return;
exception
when Error : Unicode_Format_Error =>
-- Augment the exception with the file name ane line number
Handler.Increment_Errors;
Handler.Invalid_Definition
(Facility, Locale, File_Name, Def_Line,
From_Latin_1 (Exception_Message (Error)));
end Parse;
----------------------
-- Reset_N_Messages --
----------------------
procedure Reset_N_Messages (Handler : in out Parser_Handler_Type) is
begin
Handler.N_Messages := 0;
end Reset_N_Messages;
end ZanyBlue.Text.Properties_Parser;
|