1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT LIBRARY COMPONENTS                          --
4--                                                                          --
5--                          G N A T . R E G P A T                           --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--               Copyright (C) 1986 by University of Toronto.               --
10--                     Copyright (C) 1996-2010, AdaCore                     --
11--                                                                          --
12-- GNAT is free software;  you can  redistribute it  and/or modify it under --
13-- terms of the  GNU General Public License as published  by the Free Soft- --
14-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
15-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
16-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
17-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
18--                                                                          --
19-- As a special exception under Section 7 of GPL version 3, you are granted --
20-- additional permissions described in the GCC Runtime Library Exception,   --
21-- version 3.1, as published by the Free Software Foundation.               --
22--                                                                          --
23-- You should have received a copy of the GNU General Public License and    --
24-- a copy of the GCC Runtime Library Exception along with this program;     --
25-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
26-- <http://www.gnu.org/licenses/>.                                          --
27--                                                                          --
28-- GNAT was originally developed  by the GNAT team at  New York University. --
29-- Extensive contributions were provided by Ada Core Technologies Inc.      --
30--                                                                          --
31------------------------------------------------------------------------------
32
33--  This package implements roughly the same set of regular expressions as
34--  are available in the Perl or Python programming languages.
35
36--  This is an extension of the original V7 style regular expression library
37--  written in C by Henry Spencer. Apart from the translation to Ada, the
38--  interface has been considerably changed to use the Ada String type
39--  instead of C-style nul-terminated strings.
40
41--  See file s-regpat.ads for full documentation of the interface
42
43------------------------------------------------------------
44-- Summary of Pattern Matching Packages in GNAT Hierarchy --
45------------------------------------------------------------
46
47--  There are three related packages that perform pattern matching functions.
48--  the following is an outline of these packages, to help you determine
49--  which is best for your needs.
50
51--     GNAT.Regexp (files g-regexp.ads/s-regexp.ads/s-regexp.adb)
52--       This is a simple package providing Unix-style regular expression
53--       matching with the restriction that it matches entire strings. It
54--       is particularly useful for file name matching, and in particular
55--       it provides "globbing patterns" that are useful in implementing
56--       unix or DOS style wild card matching for file names.
57
58--     GNAT.Regpat (files g-regpat.ads/s-regpat.ads/s-regpat.adb)
59--       This is a more complete implementation of Unix-style regular
60--       expressions, copied from the Perl regular expression engine,
61--       written originally in C by Henry Spencer. It is functionally the
62--       same as that library.
63
64--     GNAT.Spitbol.Patterns (files g-spipat.ads/g-spipat.adb)
65--       This is a completely general pattern matching package based on the
66--       pattern language of SNOBOL4, as implemented in SPITBOL. The pattern
67--       language is modeled on context free grammars, with context sensitive
68--       extensions that provide full (type 0) computational capabilities.
69
70with System.Regpat;
71
72package GNAT.Regpat renames System.Regpat;
73