1f7923656Sespie #ifndef VARMODIFIERS_H 2f7923656Sespie #define VARMODIFIERS_H 3f7923656Sespie 4*bb4544dfSespie /* $OpenBSD: varmodifiers.h,v 1.12 2010/07/19 19:46:44 espie Exp $ */ 56b5ae482Sespie 66b5ae482Sespie /* 76b5ae482Sespie * Copyright (c) 1999 Marc Espie. 86b5ae482Sespie * 96b5ae482Sespie * Extensive code changes for the OpenBSD project. 106b5ae482Sespie * 116b5ae482Sespie * Redistribution and use in source and binary forms, with or without 126b5ae482Sespie * modification, are permitted provided that the following conditions 136b5ae482Sespie * are met: 146b5ae482Sespie * 1. Redistributions of source code must retain the above copyright 156b5ae482Sespie * notice, this list of conditions and the following disclaimer. 166b5ae482Sespie * 2. Redistributions in binary form must reproduce the above copyright 176b5ae482Sespie * notice, this list of conditions and the following disclaimer in the 186b5ae482Sespie * documentation and/or other materials provided with the distribution. 196b5ae482Sespie * 206b5ae482Sespie * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS 216b5ae482Sespie * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 226b5ae482Sespie * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 236b5ae482Sespie * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD 246b5ae482Sespie * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 256b5ae482Sespie * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 266b5ae482Sespie * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 276b5ae482Sespie * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 286b5ae482Sespie * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 296b5ae482Sespie * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 306b5ae482Sespie * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 316b5ae482Sespie */ 32f7923656Sespie 33f7923656Sespie /* VarModifiers_Init(); 34f7923656Sespie * Set up varmodifiers internal table according to selected features. 35f7923656Sespie * This can be called several times without harm. */ 3604ed836eSespie extern void VarModifiers_Init(void); 37f7923656Sespie 38f7923656Sespie 39f7923656Sespie /* result = VarModifiers_Apply(val, name, ctxt, undef_is_bad, 400f4e4af8Sespie * &should_free, &modstart, paren); 41f7923656Sespie * Applies variable modifiers starting at modstart (including :), 4268636f61Sespie * using parenthesis paren, to value val. 43f7923656Sespie * Variables in spec are taken from context ctxt. 44f7923656Sespie * If undef_is_bad, error occurs if undefined variables are mentioned. 450f4e4af8Sespie * modstart is advanced past the end of the spec. 46f7923656Sespie * name holds the name of the corresponding variable, as some ODE 47f7923656Sespie * modifiers need it. 48f7923656Sespie * 49f7923656Sespie * If both val and name are NULL, VarModifiers_Apply just parses the 50f7923656Sespie * modifiers specification, as it can't apply it to anything. */ 51f7923656Sespie extern char *VarModifiers_Apply(char *, const struct Name *, SymTable *, 520f4e4af8Sespie bool, bool *, const char **, int); 53f7923656Sespie 54f7923656Sespie /* Direct interface to specific modifiers used under special circumstances. */ 55f7923656Sespie /* tails = Var_GetTail(string); 56f7923656Sespie * Returns the tail of list of words in string (needed for SysV locals). */ 57f7923656Sespie extern char *Var_GetTail(char *); 58f7923656Sespie /* heads = Var_GetHead(string); 59f7923656Sespie * Returns the head of list of words in string. */ 60f7923656Sespie /* XXX this does not replace foo with ., as (sun) System V make does. 61f7923656Sespie * Should it ? */ 62f7923656Sespie extern char *Var_GetHead(char *); 636b5ae482Sespie #endif 64