bsdstubs: add strtok_r() from musl if unavailable on a platform (closes #66)

bsdstubs.c

@@ -125,3 +125,45 @@ char *strndup(const char *src, size_t len)
 }
 
 #endif
+
+#ifndef HAVE_STRTOK_R
+/*
+ * Copyright (c) 2005-2014 Rich Felker
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+char *strtok_r(char *s, const char *sep, char **p)
+{
+	if (!s && !(s = *p))
+		return NULL;
+
+	s += strspn(s, sep);
+	if (!*s)
+		return *p = 0;
+	*p = s + strcspn(s, sep);
+
+	if (**p)
+		*(*p)++ = 0;
+	else
+		*p = 0;
+	return s;
+}
+#endif

bsdstubs.h

@@ -31,4 +31,8 @@ extern size_t strlcat(char *dst, const char *src, size_t siz);
 extern char *strndup(const char *src, size_t len);
 #endif
 
+#ifndef HAVE_STRTOK_R
+extern char *strtok_r(char *s, const char *sep, char **p);
+#endif
+
 #endif

configure.ac

@@ -15,7 +15,7 @@ AC_PREREQ([2.68])
 AC_INIT([pkgconf], [0.9.6], [http://github.com/pkgconf/pkgconf/issues])
 AC_CONFIG_SRCDIR([pkg.c])
 AC_CONFIG_HEADERS([config.h])
-AC_CHECK_FUNCS([strlcpy strlcat strndup])
+AC_CHECK_FUNCS([strlcpy strlcat strndup strtok_r])
 
 
 AC_ARG_ENABLE([strict],