[libgda] Added gda_time_valid() and gda_timestamp_valid(), thanks to Andrea Zagli

[Vivien Malerba <vivien src gnome org>]

commit 8ccc54aa2dc0e7e9ed09790ddaf12727f6770644
Author: Vivien Malerba <malerba gnome-db org>
Date:   Tue Jul 13 22:32:53 2010 +0200

    Added gda_time_valid() and gda_timestamp_valid(), thanks to Andrea Zagli

 doc/C/libgda-sections.txt |    2 +
 libgda/gda-value.c        |   53 +++++++++++++++++++++++++++++++++++++++++++++
 libgda/gda-value.h        |    4 +++
 libgda/libgda.symbols     |    2 +
 4 files changed, 61 insertions(+), 0 deletions(-)
---
diff --git a/doc/C/libgda-sections.txt b/doc/C/libgda-sections.txt
index fd21f96..a6abc7b 100644
--- a/doc/C/libgda-sections.txt
+++ b/doc/C/libgda-sections.txt
@@ -770,12 +770,14 @@ gda_value_set_numeric
 GdaTime
 gda_time_copy
 gda_time_free
+gda_time_valid
 gda_value_get_time
 gda_value_set_time
 <SUBSECTION>
 GdaTimestamp
 gda_timestamp_copy
 gda_timestamp_free
+gda_timestamp_valid
 gda_value_get_timestamp
 gda_value_set_timestamp
 gda_value_new_timestamp_from_timet
diff --git a/libgda/gda-value.c b/libgda/gda-value.c
index 382fb58..afa5045 100644
--- a/libgda/gda-value.c
+++ b/libgda/gda-value.c
@@ -948,6 +948,26 @@ gda_time_free (gpointer boxed)
 	g_free (boxed);
 }
 
+/**
+ * gda_time_valid
+ * @time: a #GdaTime value to check if it is valid
+ *
+ * Returns: #TRUE if #GdaTime is valid; FALSE otherwise.
+ *
+ * Since: 4.2
+ */
+gboolean
+gda_time_valid (const GdaTime *time)
+{
+	g_return_val_if_fail (time, FALSE);
+
+	if (time->hour < 0 || time->hour > 24 ||
+	    time->minute < 0 || time->minute > 59 ||
+	    time->second < 0 || time->second > 59)
+		return FALSE;
+	else
+		return TRUE;
+}
 
 
 /* 
@@ -1063,7 +1083,40 @@ gda_timestamp_free (gpointer boxed)
 	g_free (boxed);
 }
 
+/**
+ * gda_timestamp_valid
+ * @timestamp: a #GdaTimestamp value to check if it is valid
+ *
+ * Returns: #TRUE if #GdaTimestamp is valid; FALSE otherwise.
+ *
+ * Since: 4.2
+ */
+gboolean
+gda_timestamp_valid (const GdaTimestamp *timestamp)
+{
+	g_return_val_if_fail (timestamp, FALSE);
+
+	GDate *gdate;
 
+	/* check the date part */
+	gdate = g_date_new_dmy ((GDateDay) timestamp->day, (GDateMonth) timestamp->month,
+				(GDateYear) timestamp->year);
+	if (!gdate)
+		return FALSE;
+	if (! g_date_valid (gdate)) {
+		g_date_free (gdate);
+		return FALSE;
+	}
+	g_date_free (gdate);
+
+	/* check the time part */
+	if (timestamp->hour < 0 || timestamp->hour > 24 ||
+	    timestamp->minute < 0 || timestamp->minute > 59 ||
+	    timestamp->second < 0 || timestamp->second > 59)
+		return FALSE;
+	else
+		return TRUE;
+}
 
 /**
  * gda_value_new
diff --git a/libgda/gda-value.h b/libgda/gda-value.h
index 64b7f1d..ac1d5d5 100644
--- a/libgda/gda-value.h
+++ b/libgda/gda-value.h
@@ -184,10 +184,14 @@ void                              gda_numeric_free (gpointer boxed);
 GType                             gda_time_get_type (void) G_GNUC_CONST;
 gpointer                          gda_time_copy (gpointer boxed);
 void                              gda_time_free (gpointer boxed);
+gboolean                          gda_time_valid (const GdaTime *time);
+
 
 GType                             gda_timestamp_get_type (void) G_GNUC_CONST;
 gpointer                          gda_timestamp_copy (gpointer boxed);
 void                              gda_timestamp_free (gpointer boxed);
+gboolean                          gda_timestamp_valid (const GdaTimestamp *timestamp);
+
 
 GType                             gda_geometricpoint_get_type (void) G_GNUC_CONST;
 gpointer                          gda_geometricpoint_copy (gpointer boxed);
diff --git a/libgda/libgda.symbols b/libgda/libgda.symbols
index a3393b1..f48b266 100644
--- a/libgda/libgda.symbols
+++ b/libgda/libgda.symbols
@@ -786,9 +786,11 @@
 	gda_time_copy
 	gda_time_free
 	gda_time_get_type
+	gda_time_valid
 	gda_timestamp_copy
 	gda_timestamp_free
 	gda_timestamp_get_type
+	gda_timestamp_valid
 	gda_transaction_isolation_get_type
 	gda_transaction_status_add_event_sql
 	gda_transaction_status_add_event_sub