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- /* kwset.h - header declaring the keyword set library.
- Copyright 1989 Free Software Foundation
- Written August 1989 by Mike Haertel.
-
- 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- 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. */
- char *beg[1]; /* Begin pointer for each submatch. */
- size_t size[1]; /* Length of each submatch. */
- };
-
- #if __STDC__ || defined(MSDOS)
-
- typedef void *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(const char *);
-
- /* 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(kwset_t, const char *, 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(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 char *kwsexec(kwset_t, char *, size_t, struct kwsmatch *);
-
- /* Deallocate the given keyword set and all its associated storage. */
- extern void kwsfree(kwset_t);
-
- #else
-
- typedef char *kwset_t;
-
- extern kwset_t kwsalloc();
- extern char *kwsincr();
- extern char *kwsprep();
- extern char *kwsexec();
- extern void kwsfree();
-
- #endif
-