#include <h/utils.h>
#include <stdlib.h>
+/*
+ * Safely call malloc
+ */
void *
mh_xmalloc(size_t size)
{
return memory;
}
+/*
+ * Safely call realloc
+ */
void *
mh_xrealloc(void *ptr, size_t size)
{
return memory;
}
+
+/*
+ * Return the present working directory, if the current directory does not
+ * exist, or is too long, make / the pwd.
+ */
char *
pwd(void)
{
return curwd;
}
+
+/*
+ * add -- If "s1" is NULL, this routine just creates a
+ * -- copy of "s2" into newly malloc'ed memory.
+ * --
+ * -- If "s1" is not NULL, then copy the concatenation
+ * -- of "s1" and "s2" (note the order) into newly
+ * -- malloc'ed memory. Then free "s1".
+ */
+char *
+add (char *s2, char *s1)
+{
+ char *cp;
+ size_t len1 = 0, len2 = 0;
+
+ if (s1)
+ len1 = strlen (s1);
+ if (s2)
+ len2 = strlen (s2);
+
+ cp = mh_xmalloc (len1 + len2 + 1);
+
+ /* Copy s1 and free it */
+ if (s1) {
+ memcpy (cp, s1, len1);
+ free (s1);
+ }
+
+ /* Copy s2 */
+ if (s2)
+ memcpy (cp + len1, s2, len2);
+
+ /* Now NULL terminate the string */
+ cp[len1 + len2] = '\0';
+
+ return cp;
+}