libc: Add libgen.h

libc/include/libgen.h

@@ -0,0 +1,23 @@
+/* libgen.h: Path parsing functions. */
+
+#ifndef _LIBGEN_H
+#define _LIBGEN_H
+
+// These functions are implemented in libluna (CPath.h)
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+    /* Returns path's base name. Will modify path. */
+    char* basename(char* path);
+
+    /* Returns path's parent directory. Will modify path. */
+    char* dirname(char* path);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

libluna/include/luna/CPath.h

@@ -1,4 +1,7 @@
 #pragma once
 
+extern "C"
+{
     char* basename(char*);
     char* dirname(char*);
+}

libluna/src/CPath.cpp

@@ -3,6 +3,8 @@
 
 static char dot[] = ".";
 
+extern "C"
+{
     char* basename(char* path)
     {
         // If path is NULL, or the string's length is 0, return .
@@ -45,3 +47,4 @@ char* dirname(char* path)
             *(end + 1) = 0;
         return path;
     }
+}