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console.c: cursor position on Windows

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* ext/io/console/console.c (console_goto): new method IO#goto on
  Windows.  [EXPERIMENTAL]

* ext/io/console/console.c (console_cursor_pos): new method
  IO#cursor on Windows.  [EXPERIMENTAL]

* ext/io/console/console.c (console_cursor_set): new method
  IO#cursor= on Windows.  [EXPERIMENTAL]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50425 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-05-03 18:11:40 +00:00
parent 1014dfb442
commit 85366d7d59
1 changed files with 49 additions and 0 deletions
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49
ext/io/console/console.c
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@ -657,6 +657,52 @@ console_beep(VALUE io)
return io;
}
#if defined _WIN32
static VALUE
console_goto(VALUE io, VALUE x, VALUE y)
{
rb_io_t *fptr;
int fd;
COORD pos;
GetOpenFile(io, fptr);
fd = GetWriteFD(fptr);
pos.X = NUM2UINT(x);
pos.Y = NUM2UINT(y);
if (!SetConsoleCursorPosition((HANDLE)rb_w32_get_osfhandle(fd), pos)) {
rb_syserr_fail(LAST_ERROR, 0);
}
return io;
}
static VALUE
console_cursor_pos(VALUE io)
{
rb_io_t *fptr;
int fd;
rb_console_size_t ws;
GetOpenFile(io, fptr);
fd = GetWriteFD(fptr);
if (!GetConsoleScreenBufferInfo((HANDLE)rb_w32_get_osfhandle(fd), &ws)) {
rb_syserr_fail(LAST_ERROR, 0);
}
return rb_assoc_new(UINT2NUM(ws.dwCursorPosition.X), UINT2NUM(ws.dwCursorPosition.Y));
}
static VALUE
console_cursor_set(VALUE io, VALUE cpos)
{
cpos = rb_convert_type(cpos, T_ARRAY, "Array", "to_ary");
if (RARRAY_LEN(cpos) != 2) rb_raise(rb_eArgError, "expected 2D coordinate");
return console_goto(io, RARRAY_AREF(cpos, 0), RARRAY_AREF(cpos, 1));
}
#else
# define console_goto rb_f_notimplement
# define console_cursor_pos rb_f_notimplement
# define console_cursor_set rb_f_notimplement
#endif
/*
* call-seq:
* IO.console -> #<File:/dev/tty>
@ -801,6 +847,9 @@ InitVM_console(void)
rb_define_method(rb_cIO, "oflush", console_oflush, 0);
rb_define_method(rb_cIO, "ioflush", console_ioflush, 0);
rb_define_method(rb_cIO, "beep", console_beep, 0);
rb_define_method(rb_cIO, "goto", console_goto, 2);
rb_define_method(rb_cIO, "cursor", console_cursor_pos, 0);
rb_define_method(rb_cIO, "cursor=", console_cursor_set, 1);
rb_define_singleton_method(rb_cIO, "console", console_dev, -1);
{
VALUE mReadable = rb_define_module_under(rb_cIO, "generic_readable");