Rewrote mkdir (and touched lots of things in the process).

libbb/strdup_substr.c

@@ -0,0 +1,32 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini strdup_substr function.
+ *
+ * Copyright (C) 2001  Mark Whitley.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/* Return a substring of STR, starting at index START and ending at END,
+ * allocated on the heap.  */
+
+char *strdup_substr(const char *str, int start, int end)
+{
+	int size = end - start + 1;
+	char *newstr = xmalloc(size);
+	memcpy(newstr, str+start, size-1);
+	newstr[size-1] = '\0';
+	return newstr;
+}