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-rw-r--r--src/string/basename_gnu.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/src/string/basename_gnu.c b/src/string/basename_gnu.c
new file mode 100644
index 0000000..6fb474a
--- /dev/null
+++ b/src/string/basename_gnu.c
@@ -0,0 +1,52 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+#include <string.h>
+#include <stddef.h>
+
+
+# pragma GCC diagnostic ignored "-Wdiscarded-qualifiers"
+
+
+
+/**
+ * Get the basename of a filename.
+ *
+ * This is a GNU extension, include <libgen.h>
+ * to override it with the XPG-compliant implementation.
+ *
+ * @param filename The filename.
+ * @return The basename, it is either a substring
+ * of `filename` or, if `filename` is `NULL`
+ * or is empty, a statically allocationed string,
+ * so it must not freed or edited.
+ */
+char* __gnu_basename(const char* filename)
+{
+ char* r = filename;
+ char last = '/';
+ if (filename == NULL)
+ return ".";
+ while (*filename)
+ {
+ if ((*filename != '/') && (last == '/'))
+ r = filename;
+ last = *filename++;
+ }
+ return r;
+}
+