diff --git a/hawk/lib/hawk-glob.h b/hawk/lib/hawk-glob.h
new file mode 100644
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+++ b/hawk/lib/hawk-glob.h
@@ -0,0 +1,114 @@
+/*
+    Copyright (c) 2006-2020 Chung, Hyung-Hwan. All rights reserved.
+    are met:
+    1. Redistributions of source code must retain the above copyright
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+       notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
+    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+    OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+    IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+    NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+    THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _HAWK_GLOB_H_
+#define _HAWK_GLOB_H_
+
+#include <hawk-gem.h>
+
+/** \file
+ * This file provides functions, types, macros for wildcard expansion
+ * in a path name.
+ */
+
+typedef int (*hawk_gem_bglob_cb_t) (
+	const hawk_bcs_t*  path,
+	void*              cbctx
+);
+
+typedef int (*hawk_gem_uglob_cb_t) (
+	const hawk_ucs_t*  path,
+	void*              cbctx
+);
+
+enum hawk_glob_flag_t
+{
+	/** Don't use the backslash as an escape charcter.
+	 *  This option is on in Win32/OS2/DOS. */
+	HAWK_GLOB_NOESCAPE   = (1 << 0),
+
+	/** Match a leading period explicitly by a literal period in the pattern */
+	HAWK_GLOB_PERIOD     = (1 << 1),
+
+	/** Perform case-insensitive matching. 
+	 *  This option is always on in Win32/OS2/DOS. */
+	HAWK_GLOB_IGNORECASE = (1 << 2),
+
+	/** Make the function to be more fault-resistent */
+	HAWK_GLOB_TOLERANT   = (1 << 3),
+
+	/** Exclude special entries from matching. 
+	  * Special entries include . and .. */
+	HAWK_GLOB_SKIPSPCDIR  = (1 << 4),
+
+	/**
+	  * bitsise-ORed of all valid enumerators
+	  */
+	HAWK_GLOB_ALL = (HAWK_GLOB_NOESCAPE | HAWK_GLOB_PERIOD |
+	                 HAWK_GLOB_IGNORECASE | HAWK_GLOB_TOLERANT |
+	                 HAWK_GLOB_SKIPSPCDIR)
+};
+typedef enum hawk_glob_flag_t hawk_glob_flag_t;
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/**
+ * The hawk_gem_bglob() function finds path names matchin the \a pattern.
+ * It calls the call-back function \a cbimpl for each path name found.
+ * 
+ * \return -1 on failure, 0 on no match, 1 if matches are found.
+ */
+HAWK_EXPORT int hawk_gem_bglob (
+	hawk_gem_t*               gem,
+	const hawk_bch_t*         pattern,
+	hawk_gem_bglob_cb_t       cbimpl,
+	void*                     cbctx,
+	int                       flags
+);
+
+HAWK_EXPORT int hawk_gem_uglob (
+	hawk_gem_t*               gem,
+	const hawk_uch_t*         pattern,
+	hawk_gem_uglob_cb_t       cbimpl,
+	void*                     cbctx,
+	int                       flags
+);
+
+#if defined(HAWK_OOCH_IS_UCH)
+	typedef hawk_gem_uglob_cb_t hawk_gem_glob_cb_t;
+#	define hawk_gem_glob hawk_gem_uglob
+#else
+	typedef hawk_gem_bglob_cb_t hawk_gem_glob_cb_t;
+#	define hawk_gem_glob hawk_gem_bglob
+	
+#endif
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif
+