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authorNobuyoshi Nakada <nobu@ruby-lang.org>2019-09-09 23:17:38 +0900
committerNobuyoshi Nakada <nobu@ruby-lang.org>2019-09-10 08:18:03 +0900
commit53ed4fb37632789db69815bb9b9df0e3572779ef (patch)
tree8987f3dc5f906eb8ef9d58fb49f4e5a1987a6f94 /ext/io/console
parent803dc9e1e48325515bf7c5ce176cf2b5bc0792a9 (diff)
[ruby/io-console] Added IO#cursor for VT
https://github.com/ruby/io-console/commit/41a6a6cace
Notes
Notes: Merged: https://github.com/ruby/ruby/pull/2440
Diffstat (limited to 'ext/io/console')
-rw-r--r--ext/io/console/console.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/ext/io/console/console.c b/ext/io/console/console.c
index b50a73ee0b5..8c30684113b 100644
--- a/ext/io/console/console.c
+++ b/ext/io/console/console.c
@@ -836,7 +836,6 @@ console_key_pressed_p(VALUE io, VALUE k)
}
#else
# define console_goto rb_f_notimplement
-# define console_cursor_pos rb_f_notimplement
# define console_cursor_set rb_f_notimplement
static VALUE
read_vt_response(VALUE io, VALUE query)
@@ -875,6 +874,24 @@ console_vt_response(int argc, VALUE *argv, VALUE io)
VALUE ret = ttymode_with_io(io, read_vt_response, query, set_rawmode, optp);
return ret;
}
+
+static VALUE
+console_cursor_pos(VALUE io)
+{
+ VALUE query = rb_str_new_cstr("\e[6n");
+ VALUE resp = console_vt_response(1, &query, io);
+ VALUE row, column, term;
+ if (!RB_TYPE_P(resp, T_ARRAY) || RARRAY_LEN(resp) != 3) return Qnil;
+ term = RARRAY_AREF(resp, 2);
+ if (!RB_TYPE_P(term, T_STRING) || RSTRING_LEN(term) != 1) return Qnil;
+ if (RSTRING_PTR(term)[0] != 'R') return Qnil;
+ row = RARRAY_AREF(resp, 0);
+ column = RARRAY_AREF(resp, 1);
+ rb_ary_resize(resp, 2);
+ RARRAY_ASET(resp, 0, column);
+ RARRAY_ASET(resp, 1, row);
+ return resp;
+}
# define console_key_pressed_p rb_f_notimplement
#endif