gcc/ada/g-regpat.ads

   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) 1996-2008, 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 2,  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.  See the GNU General Public License --
  18 -- for  more details.  You should have  received  a copy of the GNU General --
  19 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  20 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  21 -- Boston, MA 02110-1301, USA.                                              --
  22 --                                                                          --
  23 -- As a special exception,  if other files  instantiate  generics from this --
  24 -- unit, or you link  this unit with other files  to produce an executable, --
  25 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  26 -- covered  by the  GNU  General  Public  License.  This exception does not --
  27 -- however invalidate  any other reasons why  the executable file  might be --
  28 -- covered by the  GNU Public License.                                      --
  29 --                                                                          --
  30 -- GNAT was originally developed  by the GNAT team at  New York University. --
  31 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 --  This package implements roughly the same set of regular expressions as
  36 --  are available in the Perl or Python programming languages.
  37
  38 --  This is an extension of the original V7 style regular expression library
  39 --  written in C by Henry Spencer. Apart from the translation to Ada, the
  40 --  interface has been considerably changed to use the Ada String type
  41 --  instead of C-style nul-terminated strings.
  42
  43 --  See file s-regpat.ads for full documentation of the interface
  44
  45 ------------------------------------------------------------
  46 -- Summary of Pattern Matching Packages in GNAT Hierarchy --
  47 ------------------------------------------------------------
  48
  49 --  There are three related packages that perform pattern matching functions.
  50 --  the following is an outline of these packages, to help you determine
  51 --  which is best for your needs.
  52
  53 --     GNAT.Regexp (files g-regexp.ads/s-regexp.ads/s-regexp.adb)
  54 --       This is a simple package providing Unix-style regular expression
  55 --       matching with the restriction that it matches entire strings. It
  56 --       is particularly useful for file name matching, and in particular
  57 --       it provides "globbing patterns" that are useful in implementing
  58 --       unix or DOS style wild card matching for file names.
  59
  60 --     GNAT.Regpat (files g-regpat.ads/s-regpat.ads/s-regpat.adb)
  61 --       This is a more complete implementation of Unix-style regular
  62 --       expressions, copied from the Perl regular expression engine,
  63 --       written originally in C by Henry Spencer. It is functionally the
  64 --       same as that library.
  65
  66 --     GNAT.Spitbol.Patterns (files g-spipat.ads/g-spipat.adb)
  67 --       This is a completely general pattern matching package based on the
  68 --       pattern language of SNOBOL4, as implemented in SPITBOL. The pattern
  69 --       language is modeled on context free grammars, with context sensitive
  70 --       extensions that provide full (type 0) computational capabilities.
  71
  72 with System.Regpat;
  73
  74 package GNAT.Regpat renames System.Regpat;