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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- ADA.STRINGS.TEXT_BUFFERS.FORMATTING --
-- --
-- S p e c --
-- --
-- Copyright (C) 2020-2024, 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.Text_Buffers.Utils;
package Ada.Strings.Text_Buffers.Formatting is
-- Template-based output, based loosely on C's printf family. Unlike
-- printf, it is type safe. We don't support myriad formatting options; the
-- caller is expected to call 'Image, or other functions that might have
-- various formatting capabilities.
type Template is new Utils.UTF_8;
procedure Put
(S : in out Root_Buffer_Type'Class; T : Template;
X1, X2, X3, X4, X5, X6, X7, X8, X9 : Utils.UTF_8_Lines := "");
-- Prints the template as is, except for the following escape sequences:
-- "\n" is end of line.
-- "\i" indents by the default amount, and "\o" outdents.
-- "\I" indents by one space, and "\O" outdents.
-- "\1" is replaced with X1, and similarly for 2, 3, ....
-- "\\" is "\".
-- Note that the template is not type String, to avoid this sort of thing:
--
-- https://xkcd.com/327/
procedure Put
(T : Template;
X1, X2, X3, X4, X5, X6, X7, X8, X9 : Utils.UTF_8_Lines := "");
-- Sends to standard output
procedure Err
(T : Template;
X1, X2, X3, X4, X5, X6, X7, X8, X9 : Utils.UTF_8_Lines := "");
-- Sends to standard error
function Format
(T : Template;
X1, X2, X3, X4, X5, X6, X7, X8, X9 : Utils.UTF_8_Lines := "")
return Utils.UTF_8_Lines;
-- Returns a UTF-8-encoded String
end Ada.Strings.Text_Buffers.Formatting;
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