X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=include%2Fbabeltrace%2Fctf-ir%2Fevent-fields.h;h=4a55b449af3491a25cb71d263758dd2a9f78a85e;hb=3f4a108db93fa672654a73aa87b34969c8097eed;hp=489c2bf8ee0a5f9c2722b90dfb4bcf21af409965;hpb=c6f9c5a3ab5bfe30a46a61331e79e0f53bb3d6f9;p=babeltrace.git

diff --git a/include/babeltrace/ctf-ir/event-fields.h b/include/babeltrace/ctf-ir/event-fields.h
index 489c2bf8..4a55b449 100644
--- a/include/babeltrace/ctf-ir/event-fields.h
+++ b/include/babeltrace/ctf-ir/event-fields.h
@@ -154,6 +154,22 @@ extern struct bt_ctf_field *bt_ctf_field_sequence_get_field(
 extern struct bt_ctf_field *bt_ctf_field_variant_get_field(
 		struct bt_ctf_field *variant, struct bt_ctf_field *tag);
 
+/*
+ * bt_ctf_field_variant_get_current_field: get the current selected field of a
+ *	variant.
+ *
+ * Return the variant's current selected field. This function, unlike
+ * bt_ctf_field_variant_get_field(), does not create any field; it
+ * returns NULL if there's no current selected field yet.
+ *
+ * @param variant Variant field instance.
+ *
+ * Returns a field instance on success, NULL on error or when there's no
+ * current selected field.
+ */
+extern struct bt_ctf_field *bt_ctf_field_variant_get_current_field(
+		struct bt_ctf_field *variant);
+
 /*
  * bt_ctf_field_enumeration_get_container: get an enumeration field's container.
  *
@@ -304,6 +320,28 @@ extern int bt_ctf_field_string_set_value(struct bt_ctf_field *string_field,
 extern int bt_ctf_field_string_append(struct bt_ctf_field *string_field,
 		const char *value);
 
+/*
+ * bt_ctf_field_string_append_len: append a string of a given length to
+ * a string field's current value.
+ *
+ * Append a string of a given length to the current value of a string
+ * field. If the string field was never set using
+ * bt_ctf_field_string_set_value(), it is first set to an empty string,
+ * and then the concatenation happens.
+ *
+ * If a null byte is encountered before the given length, only the
+ * substring before the first null byte is appended.
+ *
+ * @param string_field String field instance.
+ * @param value String to append to the current string field's value.
+ * @param length Length of string value to append.
+ *
+ * Returns 0 on success, a negative value on error.
+ */
+extern int bt_ctf_field_string_append_len(
+		struct bt_ctf_field *string_field, const char *value,
+		unsigned int length);
+
 /*
  * bt_ctf_field_get_type: get a field's type
  *
@@ -314,6 +352,20 @@ extern int bt_ctf_field_string_append(struct bt_ctf_field *string_field,
 extern struct bt_ctf_field_type *bt_ctf_field_get_type(
 		struct bt_ctf_field *field);
 
+/*
+ * bt_ctf_field_copy: get a field's deep copy.
+ *
+ * Get a field's deep copy. The created field copy shares the source's
+ * associated field types.
+ *
+ * On success, the returned copy has its reference count set to 1.
+ *
+ * @param field Field instance.
+ *
+ * Returns the field copy on success, NULL on error.
+ */
+extern struct bt_ctf_field *bt_ctf_field_copy(struct bt_ctf_field *field);
+
 /*
  * bt_ctf_field_get and bt_ctf_field_put: increment and decrement the
  * field's reference count.