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------------------------------------------------------------------------------
-- --
-- GNAT2XML COMPONENTS --
-- --
-- S T R I N G S --
-- --
-- S p e c --
-- --
-- Copyright (C) 2012-2017, AdaCore --
-- --
-- Gnat2xml is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 2, or (at your option) any later --
-- version. Gnat2xml is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of MER- --
-- CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General --
-- Public License for more details. You should have received a copy of the --
-- GNU General Public License distributed with GNAT; see file COPYING. If --
-- not, write to the Free Software Foundation, 59 Temple Place Suite 330, --
-- Boston, MA 02111-1307, USA. --
-- The gnat2xml tool was derived from the Avatox sources. --
------------------------------------------------------------------------------
pragma Ada_2012;
with Unchecked_Deallocation;
with Ada.Containers.Indefinite_Vectors;
with Ada.Strings.UTF_Encoding.Wide_Strings;
with Ada.Strings.Wide_Fixed;
with Namet;
with GNAT.OS_Lib; use GNAT.OS_Lib;
package ASIS_UL.String_Utilities is
-- String-related utilities
subtype W_Char is Wide_Character;
subtype W_Str is Wide_String;
type W_Str_Access is access all W_Str;
procedure Free is new Unchecked_Deallocation (W_Str, W_Str_Access);
W_NUL : constant W_Char := W_Char'Val (Character'Pos (ASCII.NUL));
W_LF : constant W_Char := W_Char'Val (Character'Pos (ASCII.LF));
W_CR : constant W_Char := W_Char'Val (Character'Pos (ASCII.CR));
W_FF : constant W_Char := W_Char'Val (Character'Pos (ASCII.FF));
W_HT : constant W_Char := W_Char'Val (Character'Pos (ASCII.HT));
W_VT : constant W_Char := W_Char'Val (Character'Pos (ASCII.VT));
NL : constant W_Char := W_LF;
-- Character used to represent new-line in output.
function Image (X : Integer) return String;
-- Return X'Img without the annoying blank.
type Modular is mod 2**32;
function Image (X : Modular) return String;
function Capitalize (S : String) return String;
function Capitalize (S : W_Str) return W_Str;
procedure Capitalize (S : in out String);
procedure Capitalize (S : in out W_Str);
-- Capitalizes the first letter, and all letters following a
-- non-letter-or-digit. Converts all others to lower case.
procedure To_Lower (S : in out String);
procedure To_Lower (S : in out W_Str);
-- Same as the ones in Ada.[Wide_]Characters.Handling, except we use a
-- procedure to avoid inefficient secondary stack usage.
function Escape_String_Literal (S : String) return String;
-- Double all the double quotes
function Slide (X : String) return String;
function Slide (X : W_Str) return W_Str;
-- Return X with X'First = 1
function Find
(Source : Wide_String;
Pattern : Wide_String) return Natural is
(Ada.Strings.Wide_Fixed.Index (Source, Pattern));
function Has_Prefix (X, Prefix : String) return Boolean;
function Has_Prefix (X, Prefix : W_Str) return Boolean;
-- True if Prefix is at the beginning of X, case insensitive. For example,
-- Has_Prefix("An_Identifier", Prefix => "an_") is True.
function Has_Suffix (X, Suffix : String) return Boolean;
function Has_Suffix (X, Suffix : W_Str) return Boolean;
-- True if Suffix is at the end of X, case insensitive
function Strip_Prefix (X, Prefix : String) return String;
function Strip_Prefix (X, Prefix : W_Str) return W_Str;
-- If Prefix is at the beginning of X (case insensitive), strip it off
function Strip_Suffix (X, Suffix : String) return String;
function Strip_Suffix (X, Suffix : W_Str) return W_Str;
-- If Suffix is at the end of X (case insensitive), strip it off
function Strip_Article (S : String) return String;
function Strip_Article (S : W_Str) return W_Str;
-- Removes a leading "A_" or "An_" from the string. Case insensitive.
function Replace_All (S, From, To : W_Str) return W_Str;
function Replace_All
(S : W_Str_Access;
From, To : W_Str)
return W_Str_Access;
-- Replaces all occurrences of From in S with To. In the second form, S is
-- freed.
function Must_Replace (S, From, To : W_Str) return W_Str;
function Must_Replace
(S : W_Str_Access;
From, To : W_Str)
return W_Str_Access;
-- Same as Replace_All, except these require that at least one substring be
-- replaced.
function Replace_String (S, From, To : String) return String;
-- Same as Replace_All, but for String
subtype Digit is Integer range 0 .. 9;
function Char_To_Digit (C : Character) return Digit;
function Char_To_Digit (C : W_Char) return Digit;
-- Converts '0' ==> 0, etc
BOM_8 : constant Ada.Strings.UTF_Encoding.UTF_8_String :=
Ada.Strings.UTF_Encoding.BOM_8;
function To_UTF8
(Item : W_Str;
Output_BOM : Boolean := False)
return Ada.Strings.UTF_Encoding.UTF_8_String renames
Ada.Strings.UTF_Encoding.Wide_Strings.Encode;
function From_UTF8
(Item : Ada.Strings.UTF_Encoding.UTF_8_String)
return W_Str renames
Ada.Strings.UTF_Encoding.Wide_Strings.Decode;
function W_Name_Find
(S : W_Str)
return Namet.Name_Id is
(Namet.Name_Find (To_UTF8 (S)));
-- Wrapper for Namet.Name_Find
function Get_Name_String
(Id : Namet.Name_Id)
return W_Str is
(From_UTF8 (Namet.Get_Name_String (Id)));
procedure Wide_Text_IO_Put_Char (C : Character);
procedure Wide_Text_IO_Put_Char (C : W_Char);
-- Put C to Current_Output. Used to instantiate Formatted_Output.
procedure Std_Err_Put_Char (C : Character);
-- Put C to Standard_Error. Used to instantiate Dbg_Out.
function Read_File (FD : File_Descriptor) return String_Access;
function Read_File (File_Name : String) return String_Access;
-- Reads the entire contents of the file
procedure Parallel_Make_Dir
(New_Directory : String; Give_Message : Boolean := False);
-- Creates a new directory with the given name if it does not already
-- exist, creating parent directories as necessary. This is safe for
-- parallel processing in the following sense: if two or more processes try
-- to create the same directory name at the same time, the directory will
-- be created (once), and no exception will be raised. We use this in case
-- an ASIS tool is called from gprbuild in parallel using the -j switch.
-- If Give_Message is True and the directory is successfully created, a
-- message saying so is printed.
procedure Move_File (Old_Name : String; New_Name : String);
-- Same as GNAT.OS_Lib.Rename_File, but overwrites New_Name if it already
-- exists.
package String_Vectors is
new Ada.Containers.Indefinite_Vectors (Positive, String);
subtype String_Vector is String_Vectors.Vector;
---------------------
-- Bounded Strings --
---------------------
-- Ada.Strings.Bounded_Strings is too much hassle; we use a simple
-- bounded string type here.
type Bounded_Str (Max_Length : Natural) is limited record
Length : Natural := 0;
Chars : String (1 .. Max_Length);
end record;
procedure Append (X : in out Bounded_Str; C : Character);
procedure Append (X : in out Bounded_Str; S : String);
function To_String (X : Bounded_Str) return String;
function "+" (X : Bounded_Str) return String renames To_String;
type Bounded_W_Str (Max_Length : Natural) is limited record
Length : Natural := 0;
Chars : W_Str (1 .. Max_Length);
end record;
procedure Append (X : in out Bounded_W_Str; C : W_Char);
procedure Append (X : in out Bounded_W_Str; S : W_Str);
function To_String (X : Bounded_W_Str) return W_Str;
function "+" (X : Bounded_W_Str) return W_Str renames To_String;
end ASIS_UL.String_Utilities;
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