/usr/share/gocode/src/github.com/nsf/termbox-go/termbox_common.go is in golang-termbox-dev 0.0~git20140119-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | package termbox
// private API, common OS agnostic part
type cellbuf struct {
width int
height int
cells []Cell
}
func (this *cellbuf) init(width, height int) {
this.width = width
this.height = height
this.cells = make([]Cell, width*height)
}
func (this *cellbuf) resize(width, height int) {
if this.width == width && this.height == height {
return
}
oldw := this.width
oldh := this.height
oldcells := this.cells
this.init(width, height)
this.clear()
minw, minh := oldw, oldh
if width < minw {
minw = width
}
if height < minh {
minh = height
}
for i := 0; i < minh; i++ {
srco, dsto := i*oldw, i*width
src := oldcells[srco : srco+minw]
dst := this.cells[dsto : dsto+minw]
copy(dst, src)
}
}
func (this *cellbuf) clear() {
for i := range this.cells {
c := &this.cells[i]
c.Ch = ' '
c.Fg = foreground
c.Bg = background
}
}
const cursor_hidden = -1
func is_cursor_hidden(x, y int) bool {
return x == cursor_hidden || y == cursor_hidden
}
// somewhat close to what wcwidth does, except rune_width doesn't return 0 or
// -1, it's always 1 or 2
func rune_width(r rune) int {
if r >= 0x1100 &&
(r <= 0x115f || r == 0x2329 || r == 0x232a ||
(r >= 0x2e80 && r <= 0xa4cf && r != 0x303f) ||
(r >= 0xac00 && r <= 0xd7a3) ||
(r >= 0xf900 && r <= 0xfaff) ||
(r >= 0xfe30 && r <= 0xfe6f) ||
(r >= 0xff00 && r <= 0xff60) ||
(r >= 0xffe0 && r <= 0xffe6) ||
(r >= 0x20000 && r <= 0x2fffd) ||
(r >= 0x30000 && r <= 0x3fffd)) {
return 2
}
return 1
}
|