| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- ADA.STRINGS.TEXT_BUFFERS -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 2020-2023, Free Software Foundation, Inc. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. -- |
| -- -- |
| -- As a special exception under Section 7 of GPL version 3, you are granted -- |
| -- additional permissions described in the GCC Runtime Library Exception, -- |
| -- version 3.1, as published by the Free Software Foundation. -- |
| -- -- |
| -- You should have received a copy of the GNU General Public License and -- |
| -- a copy of the GCC Runtime Library Exception along with this program; -- |
| -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- |
| -- <http://www.gnu.org/licenses/>. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| with Ada.Strings.UTF_Encoding.Strings; |
| with Ada.Strings.UTF_Encoding.Wide_Strings; |
| with Ada.Strings.UTF_Encoding.Wide_Wide_Strings; |
| |
| package body Ada.Strings.Text_Buffers is |
| function Current_Indent |
| (Buffer : Root_Buffer_Type) return Text_Buffer_Count is |
| (Text_Buffer_Count (Buffer.Indentation)); |
| |
| procedure Increase_Indent |
| (Buffer : in out Root_Buffer_Type; |
| Amount : Text_Buffer_Count := Standard_Indent) |
| is |
| begin |
| Buffer.Indentation := @ + Natural (Amount); |
| end Increase_Indent; |
| |
| procedure Decrease_Indent |
| (Buffer : in out Root_Buffer_Type; |
| Amount : Text_Buffer_Count := Standard_Indent) |
| is |
| begin |
| Buffer.Indentation := @ - Natural (Amount); |
| end Decrease_Indent; |
| |
| procedure Set_Trim_Leading_Spaces |
| (Buffer : in out Root_Buffer_Type; |
| Trim : Boolean := True) is |
| begin |
| Buffer.Trim_Leading_White_Spaces := Trim; |
| end Set_Trim_Leading_Spaces; |
| |
| function Trim_Leading_Spaces |
| (Buffer : Root_Buffer_Type) return Boolean is |
| begin |
| return Buffer.Trim_Leading_White_Spaces; |
| end Trim_Leading_Spaces; |
| |
| package body Output_Mapping is |
| -- Implement indentation in Put_UTF_8 and New_Line. |
| -- Implement other output procedures using Put_UTF_8. |
| |
| procedure Put (Buffer : in out Buffer_Type; Item : String) is |
| begin |
| Put_UTF_8 (Buffer, UTF_Encoding.Strings.Encode (Item)); |
| end Put; |
| |
| procedure Wide_Put (Buffer : in out Buffer_Type; Item : Wide_String) is |
| begin |
| Buffer.All_8_Bits := |
| @ and then |
| (for all WChar of Item => Wide_Character'Pos (WChar) < 256); |
| |
| Put_UTF_8 (Buffer, UTF_Encoding.Wide_Strings.Encode (Item)); |
| end Wide_Put; |
| |
| procedure Wide_Wide_Put |
| (Buffer : in out Buffer_Type; Item : Wide_Wide_String) |
| is |
| begin |
| Buffer.All_8_Bits := |
| @ and then |
| (for all WWChar of Item => Wide_Wide_Character'Pos (WWChar) < 256); |
| |
| Put_UTF_8 (Buffer, UTF_Encoding.Wide_Wide_Strings.Encode (Item)); |
| end Wide_Wide_Put; |
| |
| procedure Put_UTF_8 |
| (Buffer : in out Buffer_Type; |
| Item : UTF_Encoding.UTF_8_String) is |
| begin |
| if Item'Length = 0 then |
| return; |
| end if; |
| |
| if Buffer.Indent_Pending |
| and then not Buffer.Trim_Leading_White_Spaces |
| then |
| Buffer.Indent_Pending := False; |
| if Buffer.Indentation > 0 then |
| Put_UTF_8_Implementation |
| (Buffer, [1 .. Buffer.Indentation => ' ']); |
| end if; |
| end if; |
| |
| Put_UTF_8_Implementation (Buffer, Item); |
| end Put_UTF_8; |
| |
| procedure Wide_Put_UTF_16 |
| (Buffer : in out Buffer_Type; Item : UTF_Encoding.UTF_16_Wide_String) |
| is |
| begin |
| Wide_Wide_Put (Buffer, UTF_Encoding.Wide_Wide_Strings.Decode (Item)); |
| end Wide_Put_UTF_16; |
| |
| procedure New_Line (Buffer : in out Buffer_Type) is |
| begin |
| Buffer.Indent_Pending := False; -- just for a moment |
| Put (Buffer, [ASCII.LF]); |
| Buffer.Indent_Pending := True; |
| Buffer.UTF_8_Column := 1; |
| Buffer.Trim_Leading_White_Spaces := False; |
| end New_Line; |
| |
| end Output_Mapping; |
| |
| end Ada.Strings.Text_Buffers; |
