From 89fd52131942b4f5365194344ce32346ace5f112 Mon Sep 17 00:00:00 2001
From: kouji <kouji@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 10 Jul 2009 12:13:18 +0000
Subject: * ext/readline/extconf.rb: checked rl_line_buffer and rl_point in  
 readline.

* ext/readline/readline.c (readline_s_get_line_buffer): new method.
  (readline_s_get_point): new method.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24019 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/readline/readline.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

(limited to 'ext/readline/readline.c')

diff --git a/ext/readline/readline.c b/ext/readline/readline.c
index d86a714155..d54a280fcd 100644
--- a/ext/readline/readline.c
+++ b/ext/readline/readline.c
@@ -398,6 +398,54 @@ readline_s_get_completion_case_fold(VALUE self)
     return rb_attr_get(mReadline, completion_case_fold);
 }
 
+#ifdef HAVE_RL_LINE_BUFFER
+/*
+ * call-seq:
+ *   Readline.line_buffer -> string
+ *
+ * Returns the full line that is being edited. This is useful from
+ * within the complete_proc for determining the context of the
+ * completion request.
+ *
+ * The length of +Readline.line_buffer+ and GNU Readline's rl_end are
+ * same.
+ */
+static VALUE
+readline_s_get_line_buffer(VALUE self)
+{
+    rb_secure(4);
+    if (rl_line_buffer == NULL)
+	return Qnil;
+    return rb_tainted_str_new2(rl_line_buffer);
+}
+#else
+#define readline_s_get_line_buffer rb_f_notimplement
+#endif
+
+#ifdef HAVE_RL_POINT
+/*
+ * call-seq:
+ *   Readline.point -> int
+ *
+ * Returns the index of the current cursor position in
+ * +Readline.line_buffer+.
+ *
+ * The index in +Readline.line_buffer+ which matches the start of
+ * input-string passed to completion_proc is computed by subtracting
+ * the length of input-string from +Readline.point+.
+ *
+ *   start = (the length of input-string) - Readline.point
+ */
+static VALUE
+readline_s_get_point(VALUE self)
+{
+    rb_secure(4);
+    return INT2NUM(rl_point);
+}
+#else
+#define readline_s_get_point rb_f_notimplement
+#endif
+
 static char **
 readline_attempted_completion_function(const char *text, int start, int end)
 {
@@ -1262,6 +1310,10 @@ Init_readline()
 			       readline_s_set_completion_case_fold, 1);
     rb_define_singleton_method(mReadline, "completion_case_fold",
 			       readline_s_get_completion_case_fold, 0);
+    rb_define_singleton_method(mReadline, "line_buffer",
+			       readline_s_get_line_buffer, 0);
+    rb_define_singleton_method(mReadline, "point",
+			       readline_s_get_point, 0);
     rb_define_singleton_method(mReadline, "set_screen_size",
 			       readline_s_set_screen_size, 2);
     rb_define_singleton_method(mReadline, "get_screen_size",
-- 
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