tvl-depot/third_party/git/kwset.h
Vincent Ambo f4609b896f merge(3p/git): Merge git subtree at v2.29.2
This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb
2020-11-21 19:45:56 +01:00

65 lines
2.5 KiB
C

#ifndef KWSET_H
#define KWSET_H
/* This file has been copied from commit e7ac713d^ in the GNU grep git
* repository. A few small changes have been made to adapt the code to
* Git.
*/
/* 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, see <http://www.gnu.org/licenses/>. */
/* 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. */
};
struct kwset_t;
typedef struct kwset_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. */
kwset_t kwsalloc(unsigned 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. */
const char *kwsincr(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. */
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. */
size_t kwsexec(kwset_t, char const *, size_t, struct kwsmatch *);
/* Deallocate the given keyword set and all its associated storage. */
void kwsfree(kwset_t);
#endif /* KWSET_H */