1 files changed, 49 insertions, 0 deletions
diff --git a/src/plist.c b/src/plist.c
index 3f86105..4fc2f00 100644
--- a/src/plist.c
+++ b/src/plist.c
@@ -46,6 +46,8 @@
 #include <hashtable.h>
 #include <ptrarray.h>
 
+#define MAC_EPOCH 978307200
+
 #ifdef _MSC_VER
 typedef SSIZE_T ssize_t;
 #endif
@@ -528,6 +530,15 @@ plist_t plist_new_date(int32_t sec, int32_t usec)
     return plist_new_node(data);
 }
 
+plist_t plist_new_unix_date(int64_t sec)
+{
+    plist_data_t data = plist_new_plist_data();
+    data->type = PLIST_DATE;
+    data->realval = (double)sec - MAC_EPOCH;
+    data->length = sizeof(double);
+    return plist_new_node(data);
+}
+
 plist_t plist_new_null(void)
 {
     plist_data_t data = plist_new_plist_data();
@@ -1392,6 +1403,20 @@ void plist_get_date_val(plist_t node, int32_t * sec, int32_t * usec)
     }
 }
 
+void plist_get_unix_date_val(plist_t node, int64_t *sec)
+{
+    if (!node || !sec)
+        return;
+    plist_type type = plist_get_node_type(node);
+    uint64_t length = 0;
+    double val = 0;
+    if (PLIST_DATE != type)
+        return;
+    plist_get_type_and_value(node, &type, (void *) &val, &length);
+    assert(length == sizeof(double));
+    *sec = (int64_t)val + MAC_EPOCH;
+}
+
 int plist_data_compare(const void *a, const void *b)
 {
     plist_data_t val_a = NULL;
@@ -1551,6 +1576,12 @@ void plist_set_date_val(plist_t node, int32_t sec, int32_t usec)
     plist_set_element_val(node, PLIST_DATE, &val, sizeof(double));
 }
 
+void plist_set_unix_date_val(plist_t node, int64_t sec)
+{
+    double val = (double)(sec - MAC_EPOCH);
+    plist_set_element_val(node, PLIST_DATE, &val, sizeof(double));
+}
+
 int plist_bool_val_is_true(plist_t boolnode)
 {
     if (!PLIST_IS_BOOLEAN(boolnode)) {
@@ -1686,6 +1717,24 @@ int plist_date_val_compare(plist_t datenode, int32_t cmpsec, int32_t cmpusec)
     return 1;
 }
 
+int plist_unix_date_val_compare(plist_t datenode, int64_t cmpval)
+{
+    if (!PLIST_IS_DATE(datenode)) {
+        return -1;
+    }
+    int64_t dateval = 0;
+    plist_get_unix_date_val(datenode, &dateval);
+    if (dateval == cmpval) {
+        return 0;
+    }
+
+    if (dateval < cmpval) {
+        return -1;
+    }
+
+    return 1;
+}
+
 int plist_string_val_compare(plist_t strnode, const char* cmpval)
 {
     if (!PLIST_IS_STRING(strnode)) {