f4609b896f
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
65 lines
2.5 KiB
C
65 lines
2.5 KiB
C
#ifndef KWSET_H
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#define KWSET_H
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/* This file has been copied from commit e7ac713d^ in the GNU grep git
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* repository. A few small changes have been made to adapt the code to
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* Git.
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*/
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/* kwset.h - header declaring the keyword set library.
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Copyright (C) 1989, 1998, 2005 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>. */
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/* Written August 1989 by Mike Haertel.
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The author may be reached (Email) at the address mike@ai.mit.edu,
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or (US mail) as Mike Haertel c/o Free Software Foundation. */
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struct kwsmatch
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{
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int index; /* Index number of matching keyword. */
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size_t offset[1]; /* Offset of each submatch. */
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size_t size[1]; /* Length of each submatch. */
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};
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struct kwset_t;
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typedef struct kwset_t* kwset_t;
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/* Return an opaque pointer to a newly allocated keyword set, or NULL
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if enough memory cannot be obtained. The argument if non-NULL
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specifies a table of character translations to be applied to all
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pattern and search text. */
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kwset_t kwsalloc(unsigned char const *);
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/* Incrementally extend the keyword set to include the given string.
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Return NULL for success, or an error message. Remember an index
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number for each keyword included in the set. */
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const char *kwsincr(kwset_t, char const *, size_t);
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/* When the keyword set has been completely built, prepare it for
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use. Return NULL for success, or an error message. */
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const char *kwsprep(kwset_t);
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/* Search through the given buffer for a member of the keyword set.
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Return a pointer to the leftmost longest match found, or NULL if
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no match is found. If foundlen is non-NULL, store the length of
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the matching substring in the integer it points to. Similarly,
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if foundindex is non-NULL, store the index of the particular
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keyword found therein. */
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size_t kwsexec(kwset_t, char const *, size_t, struct kwsmatch *);
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/* Deallocate the given keyword set and all its associated storage. */
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void kwsfree(kwset_t);
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#endif /* KWSET_H */
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