From 05f3dbba67ac15952e1bf005ee9fd8be3428831f Mon Sep 17 00:00:00 2001 From: Fredrik Kuivinen Date: Sun, 21 Aug 2011 00:41:11 +0200 Subject: Add string search routines from GNU grep kwset.c and kwset.h have been copied unmodified from commit e7ac713d^ in the GNU grep git repository (this is the last commit in the repository licensed under GPLv2). Signed-off-by: Fredrik Kuivinen Signed-off-by: Junio C Hamano --- kwset.h | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 kwset.h (limited to 'kwset.h') diff --git a/kwset.h b/kwset.h new file mode 100644 index 0000000000..ab530b3bd0 --- /dev/null +++ b/kwset.h @@ -0,0 +1,56 @@ +/* kwset.h - header declaring the keyword set library. + Copyright (C) 1989, 1998, 2005 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY 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 + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA + 02110-1301, USA. */ + +/* Written August 1989 by Mike Haertel. + The author may be reached (Email) at the address mike@ai.mit.edu, + or (US mail) as Mike Haertel c/o Free Software Foundation. */ + +struct kwsmatch +{ + int index; /* Index number of matching keyword. */ + size_t offset[1]; /* Offset of each submatch. */ + size_t size[1]; /* Length of each submatch. */ +}; + +typedef ptr_t kwset_t; + +/* Return an opaque pointer to a newly allocated keyword set, or NULL + if enough memory cannot be obtained. The argument if non-NULL + specifies a table of character translations to be applied to all + pattern and search text. */ +extern kwset_t kwsalloc PARAMS((char const *)); + +/* Incrementally extend the keyword set to include the given string. + Return NULL for success, or an error message. Remember an index + number for each keyword included in the set. */ +extern const char *kwsincr PARAMS((kwset_t, char const *, size_t)); + +/* When the keyword set has been completely built, prepare it for + use. Return NULL for success, or an error message. */ +extern const char *kwsprep PARAMS((kwset_t)); + +/* Search through the given buffer for a member of the keyword set. + Return a pointer to the leftmost longest match found, or NULL if + no match is found. If foundlen is non-NULL, store the length of + the matching substring in the integer it points to. Similarly, + if foundindex is non-NULL, store the index of the particular + keyword found therein. */ +extern size_t kwsexec PARAMS((kwset_t, char const *, size_t, struct kwsmatch *)); + +/* Deallocate the given keyword set and all its associated storage. */ +extern void kwsfree PARAMS((kwset_t)); -- cgit v1.2.3