var.h revision 146027
1/*- 2 * Copyright (c) 2002 Juli Mallett. 3 * Copyright (c) 1988, 1989, 1990, 1993 4 * The Regents of the University of California. All rights reserved. 5 * Copyright (c) 1989 by Berkeley Softworks 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Adam de Boor. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * $FreeBSD: head/usr.bin/make/var.h 146027 2005-05-09 14:06:04Z harti $ 40 */ 41 42#ifndef var_h_9cccafce 43#define var_h_9cccafce 44 45#include <regex.h> 46 47#include "config.h" 48 49struct GNode; 50struct Buffer; 51 52typedef struct Var { 53 char *name; /* the variable's name */ 54 struct Buffer *val; /* its value */ 55 int flags; /* miscellaneous status flags */ 56 57#define VAR_IN_USE 1 /* Variable's value currently being used. 58 * Used to avoid recursion */ 59 60#define VAR_JUNK 4 /* Variable is a junk variable that 61 * should be destroyed when done with 62 * it. Used by Var_Parse for undefined, 63 * modified variables */ 64 65#define VAR_TO_ENV 8 /* Place variable in environment */ 66} Var; 67 68/* Var*Pattern flags */ 69#define VAR_SUB_GLOBAL 0x01 /* Apply substitution globally */ 70#define VAR_SUB_ONE 0x02 /* Apply substitution to one word */ 71#define VAR_SUB_MATCHED 0x04 /* There was a match */ 72#define VAR_MATCH_START 0x08 /* Match at start of word */ 73#define VAR_MATCH_END 0x10 /* Match at end of word */ 74 75typedef struct { 76 struct Buffer *lhs; /* String to match */ 77 struct Buffer *rhs; /* Replacement string (w/ &'s removed) */ 78 79 regex_t re; 80 int nsub; 81 regmatch_t *matches; 82 83 int flags; 84} VarPattern; 85 86typedef Boolean VarModifyProc(const char *, Boolean, struct Buffer *, void *); 87 88/* 89 * var.c 90 */ 91void VarREError(int, regex_t *, const char *); 92void Var_Append(const char *, const char *, struct GNode *); 93void Var_Delete(const char *, struct GNode *); 94void Var_Dump(const struct GNode *); 95Boolean Var_Exists(const char *, struct GNode *); 96void Var_Init(char **); 97char *Var_Parse(const char *, struct GNode *, Boolean, size_t *, Boolean *); 98char *Var_Quote(const char *); 99void Var_Set(const char *, const char *, struct GNode *); 100void Var_SetEnv(const char *, struct GNode *); 101struct Buffer *Var_Subst(const char *, struct GNode *, Boolean); 102struct Buffer *Var_SubstOnly(const char *, const char *, struct GNode *, Boolean); 103char *Var_Value(const char *, struct GNode *, char **); 104 105/* 106 * var_modify.c 107 */ 108VarModifyProc VarHead; 109VarModifyProc VarMatch; 110VarModifyProc VarNoMatch; 111VarModifyProc VarRESubstitute; 112VarModifyProc VarRoot; 113VarModifyProc VarSubstitute; 114VarModifyProc VarSuffix; 115VarModifyProc VarTail; 116 117#ifdef SYSVVARSUB 118VarModifyProc VarSYSVMatch; 119#endif 120 121#endif /* var_h_9cccafce */ 122