From 2e34b71f69003da3be017cd0bd8b3a2e30455714 Mon Sep 17 00:00:00 2001
From: Gergely Polonkai <gergely@polonkai.eu>
Date: Thu, 31 Jul 2014 18:11:32 +0200
Subject: [PATCH] Add function ag_db_save_identical()

It compares two AgDbSave structs and returns TRUE if they are equal or
identical.
---
 src/ag-db.c | 88 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/ag-db.h |  2 ++
 2 files changed, 90 insertions(+)

diff --git a/src/ag-db.c b/src/ag-db.c
index 1772016..f75ca19 100644
--- a/src/ag-db.c
+++ b/src/ag-db.c
@@ -903,3 +903,91 @@ ag_db_get_chart_data_by_id(AgDb *db, guint row_id, GError **err)
 
     return save_data;
 }
+
+static gint
+string_collate(const gchar *str1, const gchar *str2)
+{
+    if (((str1 == NULL) || (str2 == NULL)) && (str1 != str2)) {
+        return (str1 == NULL) ? -1 : 1;
+    }
+
+    if (str1 == str2) {
+        return 0;
+    }
+
+    return g_utf8_collate(str1, str2);
+}
+
+gboolean
+ag_db_save_identical(const AgDbSave *a, const AgDbSave *b)
+{
+    if (a == b) {
+        return TRUE;
+    }
+
+    if ((a == NULL) || (b == NULL)) {
+        return FALSE;
+    }
+
+    if (string_collate(a->name, b->name) != 0) {
+        return FALSE;
+    }
+
+    if (string_collate(a->country, b->country) != 0) {
+        return FALSE;
+    }
+
+    if (string_collate(a->city, b->city) != 0) {
+        return FALSE;
+    }
+
+    if (a->longitude != b->longitude) {
+        return FALSE;
+    }
+
+    if (a->latitude != b->latitude) {
+        return FALSE;
+    }
+
+    if (a->altitude != b->altitude) {
+        return FALSE;
+    }
+
+    if (a->year != b->year) {
+        return FALSE;
+    }
+
+    if (a->month != b->month) {
+        return FALSE;
+    }
+
+    if (a->day != b->day) {
+        return FALSE;
+    }
+
+    if (a->hour != b->hour) {
+        return FALSE;
+    }
+
+    if (a->minute != b->minute) {
+        return FALSE;
+    }
+
+    if (a->second != b->second) {
+        return FALSE;
+    }
+
+    if (a->timezone != b->timezone) {
+        return FALSE;
+    }
+
+    if (string_collate(a->house_system, b->house_system) != 0) {
+        return FALSE;
+    }
+
+    if (string_collate(a->note, b->note) != 0) {
+        return FALSE;
+    }
+
+    return TRUE;
+}
diff --git a/src/ag-db.h b/src/ag-db.h
index 47ddb26..ae4fdea 100644
--- a/src/ag-db.h
+++ b/src/ag-db.h
@@ -68,6 +68,8 @@ GList *ag_db_get_chart_list(AgDb *db, GError **err);
 
 AgDbSave *ag_db_get_chart_data_by_id(AgDb *db, guint row_id, GError **err);
 
+gboolean ag_db_save_identical(const AgDbSave *a, const AgDbSave *b);
+
 #define AG_DB_ERROR (ag_db_error_quark())
 GQuark ag_db_error_quark(void);