[gnome-keyring/dbus-api] [gck] Add gck_attribute_set_empty() function.

[Stefan Walter <stefw src gnome org>]

commit 8bfec80d353e333e492025ed1c0fbf3e438784b5
Author: Stef Walter <stef memberwebs com>
Date:   Tue Aug 18 03:39:04 2009 +0000

    [gck] Add gck_attribute_set_empty() function.

 pkcs11/gck/gck-attributes.c             |    6 ++++++
 pkcs11/gck/gck-attributes.h             |    2 ++
 pkcs11/gck/tests/unit-test-attributes.c |   13 +++++++++++++
 3 files changed, 21 insertions(+), 0 deletions(-)
---
diff --git a/pkcs11/gck/gck-attributes.c b/pkcs11/gck/gck-attributes.c
index 047050f..3ce8925 100644
--- a/pkcs11/gck/gck-attributes.c
+++ b/pkcs11/gck/gck-attributes.c
@@ -132,6 +132,12 @@ gck_attribute_get_string (CK_ATTRIBUTE_PTR attr, gchar **value)
 }
 
 CK_RV
+gck_attribute_set_empty (CK_ATTRIBUTE_PTR attr)
+{
+	return gck_attribute_set_data (attr, "", 0);
+}
+
+CK_RV
 gck_attribute_set_bool (CK_ATTRIBUTE_PTR attr, CK_BBOOL value)
 {
 	return gck_attribute_set_data (attr, &value, sizeof (CK_BBOOL));
diff --git a/pkcs11/gck/gck-attributes.h b/pkcs11/gck/gck-attributes.h
index b4509a1..3ae7cd9 100644
--- a/pkcs11/gck/gck-attributes.h
+++ b/pkcs11/gck/gck-attributes.h
@@ -37,6 +37,8 @@ CK_RV                 gck_attribute_get_time                           (CK_ATTRI
 CK_RV                 gck_attribute_get_string                         (CK_ATTRIBUTE_PTR attr,
                                                                         gchar **value);
 
+CK_RV                 gck_attribute_set_empty                          (CK_ATTRIBUTE_PTR attr);
+
 CK_RV                 gck_attribute_set_bool                           (CK_ATTRIBUTE_PTR attr,
                                                                         CK_BBOOL value);
 
diff --git a/pkcs11/gck/tests/unit-test-attributes.c b/pkcs11/gck/tests/unit-test-attributes.c
index e0290b6..05643b6 100644
--- a/pkcs11/gck/tests/unit-test-attributes.c
+++ b/pkcs11/gck/tests/unit-test-attributes.c
@@ -94,6 +94,19 @@ DEFINE_TEST(attribute_set_data_length)
 	g_assert (attr.ulValueLen == 6);
 }
 
+DEFINE_TEST(attribute_set_empty)
+{
+	CK_ATTRIBUTE attr;
+	gchar buf[30];
+	CK_RV rv;
+
+	attr.ulValueLen = 30;
+	attr.pValue = buf;
+	rv = gck_attribute_set_empty (&attr);
+	g_assert (rv == CKR_OK);
+	g_assert (attr.ulValueLen == 0);
+}
+
 DEFINE_TEST(attribute_get_bool)
 {
 	CK_ATTRIBUTE attr;