.

lib/path-concat.c

@@ -0,0 +1,58 @@
+/* path-concat.c -- concatenate two arbitrary pathnames
+   Copyright (C) 1996 Free Software Foundation, Inc.
+
+   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, 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.  */
+
+/* Written by Jim Meyering.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+char *malloc ();
+char *stpcpy ();
+
+/* Concatenate two pathname components, DIR and BASE, in newly-allocated
+   storage and return the result.  Return 0 if out of memory.  Add a slash
+   between DIR and BASE in the result if neither would contribute one.
+   If each would contribute at least one, elide one from the end of DIR.
+   Otherwise, simply concatenate DIR and BASE.  In any case, if
+   BASE_IN_RESULT is non-NULL, set *BASE_IN_RESULT to point to the copy of
+   BASE in the returned concatenation.  */
+
+char *
+path_concat (const char *dir, const char *base, char **base_in_result)
+{
+  char *p;
+  char *p_concat;
+
+  p_concat = malloc (strlen (dir) + strlen (base) + 2);
+  if (!p_concat)
+    return 0;
+
+  p = stpcpy (p_concat, dir);
+
+  if (*(p - 1) == '/' && *base == '/')
+    --p;
+  else if (*(p - 1) != '/' && *base != '/')
+    p = stpcpy (p, "/");
+
+  if (base_in_result)
+    *base_in_result = p;
+
+  stpcpy (p, base);
+
+  return p_concat;
+}

lib/path-concat.h

@@ -0,0 +1,9 @@
+#if __STDC__
+# undef __P
+# define __P(args) args
+#else
+# define __P(args) ()
+#endif
+
+char *
+path_concat _P ((const char *dir, const char *base, char **base_in_result));