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/* $OpenBSD: varname.c,v 1.6 2012/08/25 08:12:56 espie Exp $ */ |
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/* |
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* Copyright (c) 2001 Marc Espie. |
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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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* |
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* THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS |
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD |
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* PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include <stdlib.h> |
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#include "config.h" |
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#include "defines.h" |
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#include "var.h" |
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#include "buf.h" |
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#include "varname.h" |
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const char * |
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VarName_Get(const char *start, struct Name *name, SymTable *ctxt, bool err, |
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const char *(*cont)(const char *)) |
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{ |
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const char *p; |
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45925184 |
size_t len; |
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p = cont(start); |
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/* If we don't want recursive variables, we skip over '$' */ |
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if (!FEATURES(FEATURE_RECVARS)) { |
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while (*p == '$') |
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p = cont(p+1); |
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} |
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✓✓ |
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if (*p != '$') { |
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name->s = start; |
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name->e = p; |
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name->tofree = false; |
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return p; |
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} else { |
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BUFFER buf; |
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Buf_Init(&buf, MAKE_BSIZE); |
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for (;;) { |
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Buf_Addi(&buf, start, p); |
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✓✓ |
1095898 |
if (*p != '$') { |
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name->s = (const char *)Buf_Retrieve(&buf); |
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name->e = name->s + Buf_Size(&buf); |
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name->tofree = true; |
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return p; |
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} |
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start = p; |
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Var_ParseBuffer(&buf, start, ctxt, err, &len); |
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start += len; |
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p = cont(start); |
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} |
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} |
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} |
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void |
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VarName_Free(struct Name *name) |
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{ |
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✓✓ |
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if (name->tofree) |
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free((char *)name->s); |
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} |
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