LRN: add function GNUNET_STRINGS_get_short_name to get basename

diff --git a/src/include/gnunet_strings_lib.h b/src/include/gnunet_strings_lib.h
index edeccaf3b3826072ebbac472752824e4ca80adc2..8101a8113d262e1b4a88366ea7d737ca78877c63 100644 (file)
--- a/src/include/gnunet_strings_lib.h
+++ b/src/include/gnunet_strings_lib.h
@@ -199,6 +199,20 @@ GNUNET_STRINGS_absolute_time_to_string (struct GNUNET_TIME_Absolute t);
 char *
 GNUNET_STRINGS_relative_time_to_string (struct GNUNET_TIME_Relative delta);
 
+/**
+ * "man basename"
+ * Returns a pointer to a part of filename (allocates nothing)!
+ *
+ * @param filename filename to extract basename from
+ * @return short (base) name of the file (that is, everything following the
+ *         last directory separator in filename. If filename ends with a
+ *         directory separator, the result will be a zero-length string.
+ *         If filename has no directory separators, the result is filename
+ *         itself.
+ */
+const char *
+GNUNET_STRINGS_get_short_name (const char *filename);
+
 #if 0                           /* keep Emacsens' auto-indent happy */
 {
 #endif

diff --git a/src/util/strings.c b/src/util/strings.c
index bd0a8eb527732b67bed288a45e0e0f63f0430821..1a884bc7557c7fbc3e5c6f25e341ef087684181b 100644 (file)
--- a/src/util/strings.c
+++ b/src/util/strings.c
@@ -607,6 +607,26 @@ GNUNET_STRINGS_absolute_time_to_string (struct GNUNET_TIME_Absolute t)
   return ret;
 }
 
-
+/**
+ * "man basename"
+ * Returns a pointer to a part of filename (allocates nothing)!
+ *
+ * @param filename filename to extract basename from
+ * @return short (base) name of the file (that is, everything following the
+ *         last directory separator in filename. If filename ends with a
+ *         directory separator, the result will be a zero-length string.
+ *         If filename has no directory separators, the result is filename
+ *         itself.
+ */
+const char *
+GNUNET_STRINGS_get_short_name (const char *filename)
+{
+  const char *short_fn = filename;
+  const char *ss;
+  while (NULL != (ss = strstr (short_fn, DIR_SEPARATOR_STR))
+      && (ss[1] != '\0'))
+    short_fn = 1 + ss;
+  return short_fn;
+}
 
 /* end of strings.c */