From 6e0c8bbf44161e0cf3c2576e69d1cd3de889635a Mon Sep 17 00:00:00 2001
From: hyung-hwan <hyunghwan.chung@gmail.com>
Date: Sun, 23 Oct 2011 12:04:51 +0000
Subject: [PATCH] added qse_dir_geterrnum() and qse_dir_geterrmsg())

---
 qse/include/qse/fs/dir.h | 27 +++++++++++++++++++++++----
 qse/lib/fs/dir.c         | 19 +++++++++++++++++++
 2 files changed, 42 insertions(+), 4 deletions(-)

diff --git a/qse/include/qse/fs/dir.h b/qse/include/qse/fs/dir.h
index 791272d2..790039cc 100644
--- a/qse/include/qse/fs/dir.h
+++ b/qse/include/qse/fs/dir.h
@@ -24,6 +24,16 @@
 #include <qse/types.h>
 #include <qse/macros.h>
 
+enum qse_dir_errnum_t
+{
+	QSE_DIR_ENOERR = 0,
+	QSE_DIR_EINTERN,
+
+	QSE_DIR_ENOMEM,
+	QSE_DIR_EINVAL
+};
+typedef enum qse_dir_errnum_t qse_dir_errnum_t;
+
 struct qse_dir_ent_t
 {
 	enum
@@ -36,8 +46,8 @@ struct qse_dir_ent_t
 		QSE_DIR_ENT_BLOCK,
 		QSE_DIR_ENT_LINK
 	} type;
-	qse_foff_t  size;
 	qse_char_t* name;
+	qse_foff_t  size;
 };
 
 typedef struct qse_dir_ent_t qse_dir_ent_t;
@@ -45,9 +55,10 @@ typedef struct qse_dir_ent_t qse_dir_ent_t;
 struct qse_dir_t
 {
 	QSE_DEFINE_COMMON_FIELDS (dir)
-	qse_dir_ent_t ent;
-	qse_char_t*   curdir;
-	void*         info;
+	qse_dir_errnum_t errnum;
+	qse_dir_ent_t    ent;
+	qse_char_t*      curdir;
+	void*            info;
 };
 
 typedef struct qse_dir_t qse_dir_t;
@@ -76,6 +87,14 @@ void qse_dir_fini (
 	qse_dir_t* dir
 );
 
+qse_dir_errnum_t qse_dir_geterrnum (
+	qse_dir_t* dir
+);
+
+const qse_char_t* qse_dir_geterrmsg (
+	qse_dir_t* dir
+);
+
 qse_dir_ent_t* qse_dir_read (
 	qse_dir_t*        dir
 );
diff --git a/qse/lib/fs/dir.c b/qse/lib/fs/dir.c
index 1adb4272..6960f079 100644
--- a/qse/lib/fs/dir.c
+++ b/qse/lib/fs/dir.c
@@ -433,3 +433,22 @@ int qse_dir_rewind (qse_dir_t* dir)
 	return 0;
 }
 
+qse_dir_errnum_t qse_dir_geterrnum (qse_dir_t* dir)
+{
+	return dir->errnum;
+}
+
+const qse_char_t* qse_dir_geterrmsg (qse_dir_t* dir)
+{
+	static const qse_char_t* errstr[] =
+ 	{
+		QSE_T("no error"),
+		QSE_T("internal error that should never have happened"),
+
+		QSE_T("insufficient memory"),
+		QSE_T("invalid parameter or data"),
+	};
+
+	return (dir->errnum >= 0 && dir->errnum < QSE_COUNTOF(errstr))?
+		errstr[dir->errnum]: QSE_T("unknown error");
+}