[ruby/io-console] Intersperse Win32 and termios implementations

So that the both sources appear in RDoc generated HTMLs.

https://github.com/ruby/io-console/commit/beec164a47

ext/io/console/console.c

@@ -1010,67 +1010,6 @@ mode_in_range(VALUE val, int high, const char *modename)
 }
 
 #if defined _WIN32
-static VALUE
-console_goto(VALUE io, VALUE y, VALUE x)
-{
-    COORD pos;
-    int fd = GetWriteFD(io);
-    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_console_size_t ws;
-    int fd = GetWriteFD(io);
-    if (!GetConsoleScreenBufferInfo((HANDLE)rb_w32_get_osfhandle(fd), &ws)) {
-	rb_syserr_fail(LAST_ERROR, 0);
-    }
-    return rb_assoc_new(UINT2NUM(ws.dwCursorPosition.Y), UINT2NUM(ws.dwCursorPosition.X));
-}
-
-static VALUE
-console_move(VALUE io, int y, int x)
-{
-    HANDLE h;
-    rb_console_size_t ws;
-    COORD *pos = &ws.dwCursorPosition;
-
-    h = (HANDLE)rb_w32_get_osfhandle(GetWriteFD(io));
-    if (!GetConsoleScreenBufferInfo(h, &ws)) {
-	rb_syserr_fail(LAST_ERROR, 0);
-    }
-    pos->X += x;
-    pos->Y += y;
-    if (!SetConsoleCursorPosition(h, *pos)) {
-	rb_syserr_fail(LAST_ERROR, 0);
-    }
-    return io;
-}
-
-static VALUE
-console_goto_column(VALUE io, VALUE val)
-{
-    HANDLE h;
-    rb_console_size_t ws;
-    COORD *pos = &ws.dwCursorPosition;
-
-    h = (HANDLE)rb_w32_get_osfhandle(GetWriteFD(io));
-    if (!GetConsoleScreenBufferInfo(h, &ws)) {
-	rb_syserr_fail(LAST_ERROR, 0);
-    }
-    pos->X = NUM2INT(val);
-    if (!SetConsoleCursorPosition(h, *pos)) {
-	rb_syserr_fail(LAST_ERROR, 0);
-    }
-    return io;
-}
-
 static void
 constat_clear(HANDLE handle, WORD attr, DWORD len, COORD pos)
 {
@@ -1080,74 +1019,6 @@ constat_clear(HANDLE handle, WORD attr, DWORD len, COORD pos)
     FillConsoleOutputCharacterW(handle, L' ', len, pos, &written);
 }
 
-static VALUE
-console_erase_line(VALUE io, VALUE val)
-{
-    HANDLE h;
-    rb_console_size_t ws;
-    COORD *pos = &ws.dwCursorPosition;
-    DWORD w;
-    int mode = mode_in_range(val, 2, "line erase");
-
-    h = (HANDLE)rb_w32_get_osfhandle(GetWriteFD(io));
-    if (!GetConsoleScreenBufferInfo(h, &ws)) {
-	rb_syserr_fail(LAST_ERROR, 0);
-    }
-    w = winsize_col(&ws);
-    switch (mode) {
-      case 0:			/* after cursor */
-	w -= pos->X;
-	break;
-      case 1:			/* before *and* cursor */
-	w = pos->X + 1;
-	pos->X = 0;
-	break;
-      case 2:			/* entire line */
-	pos->X = 0;
-	break;
-    }
-    constat_clear(h, ws.wAttributes, w, *pos);
-    return io;
-}
-
-static VALUE
-console_erase_screen(VALUE io, VALUE val)
-{
-    HANDLE h;
-    rb_console_size_t ws;
-    COORD *pos = &ws.dwCursorPosition;
-    DWORD w;
-    int mode = mode_in_range(val, 3, "screen erase");
-
-    h = (HANDLE)rb_w32_get_osfhandle(GetWriteFD(io));
-    if (!GetConsoleScreenBufferInfo(h, &ws)) {
-	rb_syserr_fail(LAST_ERROR, 0);
-    }
-    w = winsize_col(&ws);
-    switch (mode) {
-      case 0:	/* erase after cursor */
-	w = (w * (ws.srWindow.Bottom - pos->Y + 1) - pos->X);
-	break;
-      case 1:	/* erase before *and* cursor */
-	w = (w * (pos->Y - ws.srWindow.Top) + pos->X + 1);
-	pos->X = 0;
-	pos->Y = ws.srWindow.Top;
-	break;
-      case 2:	/* erase entire screen */
-	w = (w * winsize_row(&ws));
-	pos->X = 0;
-	pos->Y = ws.srWindow.Top;
-	break;
-      case 3:	/* erase entire screen */
-	w = (w * ws.dwSize.Y);
-	pos->X = 0;
-	pos->Y = 0;
-	break;
-    }
-    constat_clear(h, ws.wAttributes, w, *pos);
-    return io;
-}
-
 static VALUE
 console_scroll(VALUE io, int line)
 {
@@ -1267,9 +1138,31 @@ console_vt_response(int argc, VALUE *argv, VALUE io, const struct query_args *qa
     return ret;
 }
 
+static VALUE
+console_scroll(VALUE io, int line)
+{
+    if (line) {
+	VALUE s = rb_sprintf("\x1b[%d%c", line < 0 ? -line : line,
+			     line < 0 ? 'T' : 'S');
+	rb_io_write(io, s);
+    }
+    return io;
+}
+
+# define console_key_pressed_p rb_f_notimplement
+#endif
+
 static VALUE
 console_cursor_pos(VALUE io)
 {
+#ifdef _WIN32
+    rb_console_size_t ws;
+    int fd = GetWriteFD(io);
+    if (!GetConsoleScreenBufferInfo((HANDLE)rb_w32_get_osfhandle(fd), &ws)) {
+	rb_syserr_fail(LAST_ERROR, 0);
+    }
+    return rb_assoc_new(UINT2NUM(ws.dwCursorPosition.Y), UINT2NUM(ws.dwCursorPosition.X));
+#else
     static const struct query_args query = {"\033[6n", 0};
     VALUE resp = console_vt_response(0, 0, io, &query);
     VALUE row, column, term;
@@ -1286,18 +1179,44 @@ console_cursor_pos(VALUE io)
     RARRAY_ASET(resp, 0, INT2NUM(r));
     RARRAY_ASET(resp, 1, INT2NUM(c));
     return resp;
+#endif
 }
 
 static VALUE
 console_goto(VALUE io, VALUE y, VALUE x)
 {
+#ifdef _WIN32
+    COORD pos;
+    int fd = GetWriteFD(io);
+    pos.X = NUM2UINT(x);
+    pos.Y = NUM2UINT(y);
+    if (!SetConsoleCursorPosition((HANDLE)rb_w32_get_osfhandle(fd), pos)) {
+	rb_syserr_fail(LAST_ERROR, 0);
+    }
+#else
     rb_io_write(io, rb_sprintf("\x1b[%d;%dH", NUM2UINT(y)+1, NUM2UINT(x)+1));
+#endif
     return io;
 }
 
 static VALUE
 console_move(VALUE io, int y, int x)
 {
+#ifdef _WIN32
+    HANDLE h;
+    rb_console_size_t ws;
+    COORD *pos = &ws.dwCursorPosition;
+
+    h = (HANDLE)rb_w32_get_osfhandle(GetWriteFD(io));
+    if (!GetConsoleScreenBufferInfo(h, &ws)) {
+	rb_syserr_fail(LAST_ERROR, 0);
+    }
+    pos->X += x;
+    pos->Y += y;
+    if (!SetConsoleCursorPosition(h, *pos)) {
+	rb_syserr_fail(LAST_ERROR, 0);
+    }
+#else
     if (x || y) {
 	VALUE s = rb_str_new_cstr("");
 	if (y) rb_str_catf(s, "\x1b[%d%c", y < 0 ? -y : y, y < 0 ? 'A' : 'B');
@@ -1305,13 +1224,29 @@ console_move(VALUE io, int y, int x)
 	rb_io_write(io, s);
 	rb_io_flush(io);
     }
+#endif
     return io;
 }
 
 static VALUE
 console_goto_column(VALUE io, VALUE val)
 {
+#ifdef _WIN32
+    HANDLE h;
+    rb_console_size_t ws;
+    COORD *pos = &ws.dwCursorPosition;
+
+    h = (HANDLE)rb_w32_get_osfhandle(GetWriteFD(io));
+    if (!GetConsoleScreenBufferInfo(h, &ws)) {
+	rb_syserr_fail(LAST_ERROR, 0);
+    }
+    pos->X = NUM2INT(val);
+    if (!SetConsoleCursorPosition(h, *pos)) {
+	rb_syserr_fail(LAST_ERROR, 0);
+    }
+#else
     rb_io_write(io, rb_sprintf("\x1b[%dG", NUM2UINT(val)+1));
+#endif
     return io;
 }
 
@@ -1319,7 +1254,34 @@ static VALUE
 console_erase_line(VALUE io, VALUE val)
 {
     int mode = mode_in_range(val, 2, "line erase");
+#ifdef _WIN32
+    HANDLE h;
+    rb_console_size_t ws;
+    COORD *pos = &ws.dwCursorPosition;
+    DWORD w;
+
+    h = (HANDLE)rb_w32_get_osfhandle(GetWriteFD(io));
+    if (!GetConsoleScreenBufferInfo(h, &ws)) {
+	rb_syserr_fail(LAST_ERROR, 0);
+    }
+    w = winsize_col(&ws);
+    switch (mode) {
+      case 0:			/* after cursor */
+	w -= pos->X;
+	break;
+      case 1:			/* before *and* cursor */
+	w = pos->X + 1;
+	pos->X = 0;
+	break;
+      case 2:			/* entire line */
+	pos->X = 0;
+	break;
+    }
+    constat_clear(h, ws.wAttributes, w, *pos);
+    return io;
+#else
     rb_io_write(io, rb_sprintf("\x1b[%dK", mode));
+#endif
     return io;
 }
 
@@ -1327,22 +1289,43 @@ static VALUE
 console_erase_screen(VALUE io, VALUE val)
 {
     int mode = mode_in_range(val, 3, "screen erase");
-    rb_io_write(io, rb_sprintf("\x1b[%dJ", mode));
+#ifdef _WIN32
-    return io;
+    HANDLE h;
-}
+    rb_console_size_t ws;
+    COORD *pos = &ws.dwCursorPosition;
+    DWORD w;
 
-static VALUE
+    h = (HANDLE)rb_w32_get_osfhandle(GetWriteFD(io));
-console_scroll(VALUE io, int line)
+    if (!GetConsoleScreenBufferInfo(h, &ws)) {
-{
+	rb_syserr_fail(LAST_ERROR, 0);
-    if (line) {
-	VALUE s = rb_sprintf("\x1b[%d%c", line < 0 ? -line : line,
-			     line < 0 ? 'T' : 'S');
-	rb_io_write(io, s);
     }
+    w = winsize_col(&ws);
+    switch (mode) {
+      case 0:	/* erase after cursor */
+	w = (w * (ws.srWindow.Bottom - pos->Y + 1) - pos->X);
+	break;
+      case 1:	/* erase before *and* cursor */
+	w = (w * (pos->Y - ws.srWindow.Top) + pos->X + 1);
+	pos->X = 0;
+	pos->Y = ws.srWindow.Top;
+	break;
+      case 2:	/* erase entire screen */
+	w = (w * winsize_row(&ws));
+	pos->X = 0;
+	pos->Y = ws.srWindow.Top;
+	break;
+      case 3:	/* erase entire screen */
+	w = (w * ws.dwSize.Y);
+	pos->X = 0;
+	pos->Y = 0;
+	break;
+    }
+    constat_clear(h, ws.wAttributes, w, *pos);
+#else
+    rb_io_write(io, rb_sprintf("\x1b[%dJ", mode));
+#endif
     return io;
 }
-# define console_key_pressed_p rb_f_notimplement
-#endif
 
 static VALUE
 console_cursor_set(VALUE io, VALUE cpos)