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Annotation of src/usr.bin/make/varname.c, Revision 1.3

1.1       espie       1: /*     $OpenPackages$ */
1.3     ! espie       2: /*     $OpenBSD: varname.c,v 1.2 2004/04/07 13:11:36 espie Exp $       */
1.1       espie       3: /*
                      4:  * Copyright (c) 2001 Marc Espie.
                      5:  *
                      6:  * Redistribution and use in source and binary forms, with or without
                      7:  * modification, are permitted provided that the following conditions
                      8:  * are met:
                      9:  * 1. Redistributions of source code must retain the above copyright
                     10:  *    notice, this list of conditions and the following disclaimer.
                     11:  * 2. Redistributions in binary form must reproduce the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer in the
                     13:  *    documentation and/or other materials provided with the distribution.
                     14:  *
                     15:  * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
                     16:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
                     17:  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
                     18:  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OPENBSD
                     19:  * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
                     20:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
                     21:  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     22:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     23:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     24:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
                     25:  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     26:  */
                     27:
                     28: #include <stdlib.h>
                     29: #include "config.h"
                     30: #include "defines.h"
                     31: #include "var.h"
                     32: #include "buf.h"
                     33: #include "varname.h"
                     34:
                     35: const char *
1.2       espie      36: VarName_Get(const char *start, struct Name *name, SymTable *ctxt, bool err, const char *(*cont)(const char *))
1.1       espie      37: {
                     38:        const char *p;
                     39:        size_t len;
                     40:
                     41:        p = cont(start);
                     42:        /* If we don't want recursive variables, we skip over '$' */
                     43:        if (!FEATURES(FEATURE_RECVARS)) {
                     44:                while (*p == '$')
1.3     ! espie      45:                        p = cont(p);
1.1       espie      46:        }
                     47:        if (*p != '$') {
                     48:                name->s = start;
                     49:                name->e = p;
                     50:                name->tofree = false;
                     51:                return p;
                     52:        } else {
                     53:                BUFFER buf;
                     54:                Buf_Init(&buf, MAKE_BSIZE);
                     55:                for (;;) {
                     56:                        Buf_Addi(&buf, start, p);
                     57:                        if (*p != '$') {
                     58:                                name->s = (const char *)Buf_Retrieve(&buf);
                     59:                                name->e = name->s + Buf_Size(&buf);
                     60:                                name->tofree = true;
                     61:                                return p;
                     62:                        }
                     63:                        start = p;
                     64:                        Var_ParseBuffer(&buf, start, ctxt, err, &len);
                     65:                        start += len;
                     66:                        p = cont(start);
                     67:                }
                     68:        }
                     69: }
                     70:
                     71: void
1.2       espie      72: VarName_Free(struct Name *name)
1.1       espie      73: {
                     74:        if (name->tofree)
                     75:                free((char *)name->s);
                     76: }
                     77: