* ext/psych/emitter.c (line_width, set_line_width): preferred line may

  be set on the emitter.
* ext/psych/lib/psych/visitors/yaml_tree.rb: ditto
* test/psych/test_emitter.rb: corresponding tests.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28584 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 28 insertions, 0 deletions

diff --git a/ext/psych/emitter.c b/ext/psych/emitter.c
index 189b865ea3..a85fa45ef5 100644
--- a/ext/psych/emitter.c
+++ b/ext/psych/emitter.c
@@ -460,6 +460,32 @@ static VALUE indentation(VALUE self)
     return INT2NUM(emitter->best_indent);
 }
 
+/* call-seq: emitter.line_width
+ *
+ * Get the preferred line width.
+ */
+static VALUE line_width(VALUE self)
+{
+    yaml_emitter_t * emitter;
+    Data_Get_Struct(self, yaml_emitter_t, emitter);
+
+    return INT2NUM(emitter->best_width);
+}
+
+/* call-seq: emitter.line_width = width
+ *
+ * Set the preferred line with to +width+.
+ */
+static VALUE set_line_width(VALUE self, VALUE width)
+{
+    yaml_emitter_t * emitter;
+    Data_Get_Struct(self, yaml_emitter_t, emitter);
+
+    yaml_emitter_set_width(emitter, NUM2INT(width));
+
+    return width;
+}
+
 void Init_psych_emitter()
 {
     VALUE psych     = rb_define_module("Psych");
@@ -483,6 +509,8 @@ void Init_psych_emitter()
     rb_define_method(cPsychEmitter, "canonical=", set_canonical, 1);
     rb_define_method(cPsychEmitter, "indentation", indentation, 0);
     rb_define_method(cPsychEmitter, "indentation=", set_indentation, 1);
+    rb_define_method(cPsychEmitter, "line_width", line_width, 0);
+    rb_define_method(cPsychEmitter, "line_width=", set_line_width, 1);
 
     id_write = rb_intern("write");
 }