Add info_field_printf() to reduce some sturct Info field boilerplate

2 files changed, 26 insertions, 3 deletions

diff --git a/hardinfo/info.c b/hardinfo/info.c
index 1537881f..ef64a420 100644
--- a/hardinfo/info.c
+++ b/hardinfo/info.c
@@ -56,7 +56,7 @@ void info_add_group(struct Info *info, const gchar *group_name, ...)
     g_array_append_val(info->groups, group);
 }
 
-struct InfoField info_field(const gchar *name, const gchar *value)
+struct InfoField info_field(const gchar *name, gchar *value)
 {
     return (struct InfoField) {
         .name = name,
@@ -73,6 +73,22 @@ struct InfoField info_field_update(const gchar *name, int update_interval)
     };
 }
 
+struct InfoField info_field_printf(const gchar *name, const gchar *format, ...)
+{
+    gchar *value;
+    va_list ap;
+
+    va_start(ap, format);
+    value = g_strdup_vprintf(format, ap);
+    va_end(ap);
+
+    return (struct InfoField) {
+        .name = name,
+        .value = value,
+        .free_value_on_flatten = TRUE,
+    };
+}
+
 struct InfoField info_field_last(void)
 {
     return (struct InfoField) {};
@@ -141,6 +157,9 @@ static void flatten_group(GString *output, const struct InfoGroup *group)
             field = g_array_index(group->fields, struct InfoField, i);
 
             g_string_append_printf(output, "%s=%s\n", field.name, field.value);
+
+            if (field.free_value_on_flatten)
+                g_free(field.value);
         }
     } else if (group->computed) {
         g_string_append_printf(output, "%s\n", group->computed);
diff --git a/includes/info.h b/includes/info.h
index 78ee935c..253c06e0 100644
--- a/includes/info.h
+++ b/includes/info.h
@@ -45,9 +45,11 @@ struct InfoGroup {
 
 struct InfoField {
     const gchar *name;
-    const gchar *value;
+    gchar *value;
 
     int update_interval;
+
+    gboolean free_value_on_flatten;
 };
 
 struct Info *info_new(void);
@@ -55,7 +57,9 @@ struct Info *info_new(void);
 void info_add_group(struct Info *info, const gchar *group_name, ...);
 void info_add_computed_group(struct Info *info, const gchar *name, const gchar *value);
 
-struct InfoField info_field(const gchar *name, const gchar *value);
+struct InfoField info_field(const gchar *name, gchar *value);
+struct InfoField info_field_printf(const gchar *name, const gchar *format, ...)
+    __attribute__((format(printf, 2, 3)));
 struct InfoField info_field_update(const gchar *name, int update_interval);
 struct InfoField info_field_last(void);