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85779f0ead
to var_modify.c, for readability. constify some low hanging fruit (string manipulation functions) and the upper layers appropriately. No longer use the private strstr(3) implementation, while changing string code. Tested by: lots of successful make buildworld.
98 lines
3.9 KiB
C
98 lines
3.9 KiB
C
/*-
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* Copyright (c) 2002 Juli Mallett.
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* Copyright (c) 1988, 1989, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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typedef struct Var {
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char *name; /* the variable's name */
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Buffer val; /* its value */
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int flags; /* miscellaneous status flags */
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#define VAR_IN_USE 1 /* Variable's value currently being used.
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* Used to avoid recursion */
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#define VAR_FROM_ENV 2 /* Variable comes from the environment */
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#define VAR_JUNK 4 /* Variable is a junk variable that
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* should be destroyed when done with
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* it. Used by Var_Parse for undefined,
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* modified variables */
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} Var;
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/* Var*Pattern flags */
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#define VAR_SUB_GLOBAL 0x01 /* Apply substitution globally */
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#define VAR_SUB_ONE 0x02 /* Apply substitution to one word */
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#define VAR_SUB_MATCHED 0x04 /* There was a match */
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#define VAR_MATCH_START 0x08 /* Match at start of word */
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#define VAR_MATCH_END 0x10 /* Match at end of word */
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#define VAR_NOSUBST 0x20 /* don't expand vars in VarGetPattern */
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typedef struct {
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char *lhs; /* String to match */
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int leftLen; /* Length of string */
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char *rhs; /* Replacement string (w/ &'s removed) */
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int rightLen; /* Length of replacement */
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int flags;
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} VarPattern;
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typedef struct {
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regex_t re;
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int nsub;
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regmatch_t *matches;
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char *replace;
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int flags;
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} VarREPattern;
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/*
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* var.c
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*/
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void VarREError(int, regex_t *, const char *);
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/*
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* var_modify.c
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*/
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Boolean VarHead(const char *, Boolean, Buffer, void *);
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Boolean VarTail(const char *, Boolean, Buffer, void *);
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Boolean VarSuffix(const char *, Boolean, Buffer, void *);
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Boolean VarRoot(const char *, Boolean, Buffer, void *);
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Boolean VarMatch(const char *, Boolean, Buffer, void *);
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#ifdef SYSVVARSUB
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Boolean VarSYSVMatch(const char *, Boolean, Buffer, void *);
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#endif
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Boolean VarNoMatch(const char *, Boolean, Buffer, void *);
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Boolean VarRESubstitute(const char *, Boolean, Buffer, void *);
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Boolean VarSubstitute(const char *, Boolean, Buffer, void *);
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