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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, write to the Free Software |
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
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02110-1301, USA. */ |
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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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extern 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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extern 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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extern 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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extern 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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extern void kwsfree(kwset_t); |
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