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* ext/io/console/console.c (console_set_winsize): new method to set 

console size.  [EXPERIMENTAL]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30751 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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nobu 2011-01-31 23:01:46 +00:00
Родитель c90d5be882
Коммит f4234c9b8f
2 изменённых файлов: 63 добавлений и 1 удалений
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5
ChangeLog
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@ -1,4 +1,7 @@
Tue Feb 1 07:56:02 2011 Nobuyoshi Nakada <nobu@ruby-lang.org>
Tue Feb 1 08:01:39 2011 Nobuyoshi Nakada <nobu@ruby-lang.org>
* ext/io/console/console.c (console_set_winsize): new method to set
console size. [EXPERIMENTAL]
* ext/io/console/console.c (console_winsize): use GetWriteFD.

59
ext/io/console/console.c
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@ -357,6 +357,7 @@ console_echo_p(VALUE io)
#if defined TIOCGWINSZ
typedef struct winsize rb_console_size_t;
#define getwinsize(fd, buf) (ioctl((fd), TIOCGWINSZ, (buf)) == 0)
#define setwinsize(fd, buf) (ioctl((fd), TIOCSWINSZ, (buf)) == 0)
#define winsize_row(buf) (buf)->ws_row
#define winsize_col(buf) (buf)->ws_col
#elif defined _WIN32
@ -391,6 +392,63 @@ console_winsize(VALUE io)
if (!getwinsize(fd, &ws)) rb_sys_fail(0);
return rb_assoc_new(INT2NUM(winsize_row(&ws)), INT2NUM(winsize_col(&ws)));
}
/*
* call-seq:
* io.winsize = [rows, columns]
*
* Tries to set console size. The effect depends on the platform and
* the running environment.
*/
static VALUE
console_set_winsize(VALUE io, VALUE size)
{
rb_io_t *fptr;
rb_console_size_t ws;
#if defined _WIN32
HANDLE wh;
int newrow, newcol;
#endif
VALUE row, col, xpixel, ypixel;
int fd;
GetOpenFile(io, fptr);
size = rb_Array(size);
rb_scan_args(RARRAY_LEN(size), RARRAY_PTR(size), "22",
&row, &col, &xpixel, &ypixel);
#if defined TIOCSWINSZ
fd = GetWriteFD(fptr);
ws.ws_row = ws.ws_col = ws.ws_xpixel = ws.ws_ypixel = 0;
#define SET(m) ws.ws_##m = NIL_P(m) ? 0 : (unsigned short)NUM2UINT(m)
SET(row);
SET(col);
SET(xpixel);
SET(ypixel);
#undef SET
if (!setwinsize(fd, &ws)) rb_sys_fail(0);
#elif defined _WIN32
wh = (HANDLE)rb_w32_get_osfhandle(GetReadFD(fptr));
newrow = (SHORT)NUM2UINT(row);
newcol = (SHORT)NUM2UINT(col);
if (!getwinsize(GetReadFD(fptr), &ws)) {
rb_sys_fail("GetConsoleScreenBufferInfo");
}
if ((ws.dwSize.X < newcol && (ws.dwSize.X = newcol, 1)) ||
(ws.dwSize.Y < newrow && (ws.dwSize.Y = newrow, 1))) {
if (!(SetConsoleScreenBufferSize(wh, ws.dwSize) || SET_LAST_ERROR)) {
rb_sys_fail("SetConsoleScreenBufferInfo");
}
}
ws.srWindow.Left = 0;
ws.srWindow.Top = 0;
ws.srWindow.Right = newcol;
ws.srWindow.Bottom = newrow;
if (!(SetConsoleWindowInfo(wh, FALSE, &ws.srWindow) || SET_LAST_ERROR)) {
rb_sys_fail("SetConsoleWindowInfo");
}
#endif
return io;
}
#endif
/*
@ -547,6 +605,7 @@ InitVM_console(void)
rb_define_method(rb_cIO, "echo?", console_echo_p, 0);
rb_define_method(rb_cIO, "noecho", console_noecho, 0);
rb_define_method(rb_cIO, "winsize", console_winsize, 0);
rb_define_method(rb_cIO, "winsize=", console_set_winsize, 1);
rb_define_method(rb_cIO, "iflush", console_iflush, 0);
rb_define_method(rb_cIO, "oflush", console_oflush, 0);
rb_define_method(rb_cIO, "ioflush", console_ioflush, 0);