146 lines
3.1 KiB
C
146 lines
3.1 KiB
C
/*
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* Copyright (C) 2000-2007 Carsten Haitzler, Geoff Harrison and various contributors
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* Copyright (C) 2005-2023 Kim Woelders
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies of the Software, its documentation and marketing & publicity
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* materials, and acknowledgment shall be given in the documentation, materials
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* and software packages that this Software was used.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "config.h"
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include "util.h"
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void *
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Ememdup(const void *ptr, unsigned int len)
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{
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void *ret;
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if (len == 0)
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return NULL;
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ret = malloc(len);
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if (!ret)
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return 0;
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memcpy(ret, ptr, len);
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return ret;
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}
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__EXPORT__ void
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EfreeNull(void **p)
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{
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Efree(*p);
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*p = NULL;
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}
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void
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EfreeSet(void **p, void *s)
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{
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Efree(*p);
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*p = s;
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}
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void
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EfreeDup(char **p, const char *s)
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{
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Efree(*p);
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*p = Estrdup(s);
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}
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char *
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Estrdup(const char *s)
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{
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if (!s)
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return NULL;
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#if USE_LIBC_STRDUP
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return strdup(s);
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#else
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return Ememdup(s, strlen(s) + 1);
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#endif
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}
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char *
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Estrndup(const char *s, size_t n)
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{
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if (!s)
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return NULL;
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#if USE_LIBC_STRNDUP
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return strndup(s, n);
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#else
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char *ss;
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ss = Ememdup(s, n + 1);
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ss[n] = '\0';
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return ss;
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#endif
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}
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char *
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Estrdupcat2(char *ss, const char *s1, const char *s2)
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{
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char *s;
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int len, l1, l2;
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if (!ss)
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return Estrdup(s2);
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len = strlen(ss);
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l1 = (s1) ? strlen(s1) : 0;
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l2 = (s2) ? strlen(s2) : 0;
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s = EREALLOC(char, ss, len + l1 + l2 + 1);
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if (!s)
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return NULL;
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if (s1 && l1)
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memcpy(s + len, s1, l1);
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if (s2 && l2)
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memcpy(s + len + l1, s2, l2);
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s[len + l1 + l2] = '\0';
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return s;
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}
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void
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Esetenv(const char *name, const char *value)
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{
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if (value)
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{
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#if HAVE_SETENV
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setenv(name, value, 1);
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#else
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char buf[4096];
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Esnprintf(buf, sizeof(buf), "%s=%s", name, value);
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putenv(Estrdup(buf));
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#endif
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}
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else
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{
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#if HAVE_UNSETENV
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unsetenv(name);
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#else
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if (getenv(name))
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putenv((char *)name);
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#endif
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}
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}
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