From: Julien Desfossez <julien.desfossez@polymtl.ca>
Date: Mon, 28 Nov 2011 14:24:37 +0000 (-0500)
Subject: Helper function to extract string from fields
X-Git-Tag: v0.8~7
X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=commitdiff_plain;h=98b6832656447ab0f8024f9086aa67625e391ac7;hp=4ede433e0d35dd10e8026e9e76872674eea9fd31;ds=inline

Helper function to extract string from fields

Following the same principle as get_char_array and get_(un)signed_int,
this function returns a char* to a string from an event field.

[ Edit by Mathieu Desnoyers: add header prototype. ]

Signed-off-by: Julien Desfossez <julien.desfossez@polymtl.ca>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/include/babeltrace/types.h b/include/babeltrace/types.h
index 41f70383..f3a0e831 100644
--- a/include/babeltrace/types.h
+++ b/include/babeltrace/types.h
@@ -431,6 +431,7 @@ struct declaration_enum *
 
 struct declaration_string *
 	string_declaration_new(enum ctf_string_encoding encoding);
+char *get_string(struct definition *field);
 
 struct declaration_struct *
 	struct_declaration_new(struct declaration_scope *parent_scope,
diff --git a/types/string.c b/types/string.c
index 9eaa9df8..bff569db 100644
--- a/types/string.c
+++ b/types/string.c
@@ -99,3 +99,13 @@ void _string_definition_free(struct definition *definition)
 	g_free(string->value);
 	g_free(string);
 }
+
+char *get_string(struct definition *field)
+{
+	struct definition_string *string_definition =
+		container_of(field, struct definition_string, p);
+
+	assert(string_definition->value != NULL);
+
+	return string_definition->value;
+}