File : g-regexp.ads
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- G N A T . R E G E X P --
6 -- --
7 -- S p e c --
8 -- --
9 -- Copyright (C) 1998-2010, AdaCore --
10 -- --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
17 -- --
18 -- --
19 -- --
20 -- --
21 -- --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
26 -- --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
29 -- --
30 ------------------------------------------------------------------------------
31
32 -- Simple Regular expression matching
33
34 -- This package provides a simple implementation of a regular expression
35 -- pattern matching algorithm, using a subset of the syntax of regular
36 -- expressions copied from familiar Unix style utilities.
37
38 -- See file s-regexp.ads for full documentation of the interface
39
40 ------------------------------------------------------------
41 -- Summary of Pattern Matching Packages in GNAT Hierarchy --
42 ------------------------------------------------------------
43
44 -- There are three related packages that perform pattern matching functions.
45 -- the following is an outline of these packages, to help you determine
46 -- which is best for your needs.
47
48 -- GNAT.Regexp (files g-regexp.ads/s-regexp.ads/s-regexp.adb)
49 -- This is a simple package providing Unix-style regular expression
50 -- matching with the restriction that it matches entire strings. It
51 -- is particularly useful for file name matching, and in particular
52 -- it provides "globbing patterns" that are useful in implementing
53 -- unix or DOS style wild card matching for file names.
54
55 -- GNAT.Regpat (files g-regpat.ads/s-regpat.ads/g-regpat.adb)
56 -- This is a more complete implementation of Unix-style regular
57 -- expressions, copied from the original V7 style regular expression
58 -- library written in C by Henry Spencer. It is functionally the
59 -- same as this library, and uses the same internal data structures
60 -- stored in a binary compatible manner.
61
62 -- GNAT.Spitbol.Patterns (files g-spipat.ads/g-spipat.adb)
63 -- This is a completely general pattern matching package based on the
64 -- pattern language of SNOBOL4, as implemented in SPITBOL. The pattern
65 -- language is modeled on context free grammars, with context sensitive
66 -- extensions that provide full (type 0) computational capabilities.
67
68 with System.Regexp;
69
70 package GNAT.Regexp renames System.Regexp;