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217 | -----------------------------------------------------------------------
-- wiki-render-wiki -- Wiki to Wiki renderer
-- Copyright (C) 2015, 2016, 2020, 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.Strings.Wide_Wide_Maps;
with Ada.Strings.Wide_Wide_Unbounded;
with Wiki.Documents;
with Wiki.Attributes;
with Wiki.Streams;
with Wiki.Strings;
-- === Wiki Renderer ===
-- The `Wiki_Renderer</tt> allows to render a wiki document into another wiki content.
-- The formatting rules are ignored except for the paragraphs and sections.
package Wiki.Render.Wiki is
use Standard.Wiki.Attributes;
-- ------------------------------
-- Wiki to HTML writer
-- ------------------------------
type Wiki_Renderer is new Renderer with private;
-- Set the output stream.
procedure Set_Output_Stream (Engine : in out Wiki_Renderer;
Stream : in Streams.Output_Stream_Access;
Format : in Wiki_Syntax);
-- Render the node instance from the document.
overriding
procedure Render (Engine : in out Wiki_Renderer;
Doc : in Documents.Document;
Node : in Nodes.Node_Type);
-- Add a section header in the document.
procedure Render_Header (Engine : in out Wiki_Renderer;
Doc : in Documents.Document;
Node : in Nodes.Node_Type;
Level : in Natural;
List : in Nodes.Node_List_Access);
-- Add a paragraph (<p>). Close the previous paragraph if any.
-- The paragraph must be closed at the next paragraph or next header.
procedure Add_Paragraph (Engine : in out Wiki_Renderer);
-- Add a blockquote (<blockquote>). The level indicates the blockquote nested level.
-- The blockquote must be closed at the next header.
procedure Add_Blockquote (Engine : in out Wiki_Renderer;
Level : in Natural);
-- Add a list item (<li>). Close the previous paragraph and list item if any.
-- The list item will be closed at the next list item, next paragraph or next header.
procedure Add_List_Item (Engine : in out Wiki_Renderer;
Level : in Positive;
Ordered : in Boolean);
procedure Render_List_Start (Engine : in out Wiki_Renderer;
Numbered : in Boolean;
Level : in Natural);
procedure Render_List_End (Engine : in out Wiki_Renderer;
Tag : in String);
procedure Render_List_Item_Start (Engine : in out Wiki_Renderer);
procedure Render_List_Item_End (Engine : in out Wiki_Renderer);
-- Render a link.
procedure Render_Link (Engine : in out Wiki_Renderer;
Name : in Strings.WString;
Attrs : in Attributes.Attribute_List);
-- Render an image.
procedure Render_Image (Engine : in out Wiki_Renderer;
Title : in Strings.WString;
Attrs : in Attributes.Attribute_List);
-- Render a quote.
procedure Render_Quote (Engine : in out Wiki_Renderer;
Title : in Strings.WString;
Attrs : in Attributes.Attribute_List);
-- Add a text block with the given format.
procedure Render_Text (Engine : in out Wiki_Renderer;
Text : in Wide_Wide_String;
Format : in Format_Map);
-- Render a text block that is pre-formatted.
procedure Render_Preformatted (Engine : in out Wiki_Renderer;
Text : in Strings.WString;
Format : in Strings.WString);
procedure Render_Tag (Engine : in out Wiki_Renderer;
Doc : in Documents.Document;
Node : in Nodes.Node_Type);
-- Finish the document after complete wiki text has been parsed.
overriding
procedure Finish (Engine : in out Wiki_Renderer;
Doc : in Documents.Document);
-- Set the text style format.
procedure Set_Format (Engine : in out Wiki_Renderer;
Format : in Format_Map);
private
use Ada.Strings.Wide_Wide_Unbounded;
type Wide_String_Access is access constant Wide_Wide_String;
type Wiki_Tag_Type is (Header_Start, Header_End,
Img_Start, Img_End,
Link_Start, Link_End, Link_Separator,
Quote_Start, Quote_End, Quote_Separator,
Preformat_Start, Preformat_End,
List_Start, List_Item, List_Ordered_Item,
Line_Break, Escape_Rule,
Horizontal_Rule,
Blockquote_Start, Blockquote_End);
type Wiki_Tag_Array is array (Wiki_Tag_Type) of Wide_String_Access;
type Wiki_Format_Array is array (Format_Type) of Wide_String_Access;
procedure Write_Optional_Space (Engine : in out Wiki_Renderer);
-- Emit a new line.
procedure New_Line (Engine : in out Wiki_Renderer;
Optional : in Boolean := False);
procedure Need_Separator_Line (Engine : in out Wiki_Renderer);
procedure Close_Paragraph (Engine : in out Wiki_Renderer);
procedure Start_Keep_Content (Engine : in out Wiki_Renderer);
type List_Index_Type is new Integer range 0 .. 32;
type List_Level_Array is array (List_Index_Type range 1 .. 32) of Natural;
EMPTY_TAG : aliased constant Wide_Wide_String := "";
type Wiki_Renderer is new Renderer with record
Output : Streams.Output_Stream_Access := null;
Syntax : Wiki_Syntax := SYNTAX_CREOLE;
Format : Format_Map := (others => False);
Tags : Wiki_Tag_Array := (others => EMPTY_TAG'Access);
Style_Start_Tags : Wiki_Format_Array := (others => EMPTY_TAG'Access);
Style_End_Tags : Wiki_Format_Array := (others => EMPTY_TAG'Access);
Escape_Set : Ada.Strings.Wide_Wide_Maps.Wide_Wide_Character_Set;
List_Index : List_Index_Type := 0;
List_Levels : List_Level_Array;
Has_Paragraph : Boolean := False;
Has_Item : Boolean := False;
Need_Paragraph : Boolean := False;
Need_Newline : Boolean := False;
Need_Space : Boolean := False;
Empty_Line : Boolean := True;
Empty_Previous_Line : Boolean := True;
Keep_Content : Natural := 0;
In_List : Boolean := False;
Invert_Header_Level : Boolean := False;
Allow_Link_Language : Boolean := False;
Link_First : Boolean := False;
Html_Blockquote : Boolean := False;
Html_Table : Boolean := False;
In_Table : Boolean := False;
In_Header : Boolean := False;
Col_Index : Natural := 0;
Line_Count : Natural := 0;
Current_Level : Natural := 0;
Quote_Level : Natural := 0;
UL_List_Level : Natural := 0;
OL_List_Level : Natural := 0;
Current_Style : Format_Map := (others => False);
Content : Unbounded_Wide_Wide_String;
Link_Href : Unbounded_Wide_Wide_String;
Link_Title : Unbounded_Wide_Wide_String;
Link_Lang : Unbounded_Wide_Wide_String;
Indent_Level : Natural := 0;
end record;
procedure Write_Link (Engine : in out Wiki_Renderer;
Link : in Strings.WString);
-- Render the table of content.
procedure Render_TOC (Engine : in out Wiki_Renderer;
Doc : in Documents.Document;
Level : in Natural);
-- Render a table component such as N_TABLE.
procedure Render_Table (Engine : in out Wiki_Renderer;
Doc : in Documents.Document;
Node : in Nodes.Node_Type);
-- Render a table row component such as N_ROW.
procedure Render_Row (Engine : in out Wiki_Renderer;
Doc : in Documents.Document;
Node : in Nodes.Node_Type);
-- Render a table row component such as N_COLUMN.
procedure Render_Column (Engine : in out Wiki_Renderer;
Doc : in Documents.Document;
Node : in Nodes.Node_Type);
end Wiki.Render.Wiki;
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