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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT COMPILER COMPONENTS --
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4 -- --
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5 -- G N A T . R E G E X P --
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6 -- --
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7 -- S p e c --
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8 -- --
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9 -- Copyright (C) 1998-2017, AdaCore --
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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17 -- --
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18 -- As a special exception under Section 7 of GPL version 3, you are granted --
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19 -- additional permissions described in the GCC Runtime Library Exception, --
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20 -- version 3.1, as published by the Free Software Foundation. --
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21 -- --
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22 -- You should have received a copy of the GNU General Public License and --
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23 -- a copy of the GCC Runtime Library Exception along with this program; --
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24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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25 -- <http://www.gnu.org/licenses/>. --
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26 -- --
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27 -- GNAT was originally developed by the GNAT team at New York University. --
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28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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29 -- --
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30 ------------------------------------------------------------------------------
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31
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32 -- Simple Regular expression matching
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33
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34 -- This package provides a simple implementation of a regular expression
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35 -- pattern matching algorithm, using a subset of the syntax of regular
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36 -- expressions copied from familiar Unix style utilities.
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37
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38 -- See file s-regexp.ads for full documentation of the interface
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39
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40 ------------------------------------------------------------
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41 -- Summary of Pattern Matching Packages in GNAT Hierarchy --
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42 ------------------------------------------------------------
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43
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44 -- There are three related packages that perform pattern matching functions.
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45 -- the following is an outline of these packages, to help you determine
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46 -- which is best for your needs.
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47
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48 -- GNAT.Regexp (files g-regexp.ads/s-regexp.ads/s-regexp.adb)
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49 -- This is a simple package providing Unix-style regular expression
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50 -- matching with the restriction that it matches entire strings. It
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51 -- is particularly useful for file name matching, and in particular
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52 -- it provides "globbing patterns" that are useful in implementing
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53 -- unix or DOS style wild card matching for file names.
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54
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55 -- GNAT.Regpat (files g-regpat.ads/s-regpat.ads/g-regpat.adb)
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56 -- This is a more complete implementation of Unix-style regular
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57 -- expressions, copied from the original V7 style regular expression
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58 -- library written in C by Henry Spencer. It is functionally the
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59 -- same as this library, and uses the same internal data structures
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60 -- stored in a binary compatible manner.
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61
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62 -- GNAT.Spitbol.Patterns (files g-spipat.ads/g-spipat.adb)
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63 -- This is a completely general pattern matching package based on the
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64 -- pattern language of SNOBOL4, as implemented in SPITBOL. The pattern
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65 -- language is modeled on context free grammars, with context sensitive
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66 -- extensions that provide full (type 0) computational capabilities.
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67
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68 with System.Regexp;
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69
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70 package GNAT.Regexp renames System.Regexp;
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