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
78
79
80
81
82
83
|
local M = {}
local cursors = {}
local get_default_cache_path = function()
local HOME = os.getenv('HOME')
local XDG_CACHE_HOME = os.getenv('XDG_CACHE_HOME')
local BASE = XDG_CACHE_HOME or HOME
return BASE .. '/.vis-cursors'
end
M.path = get_default_cache_path()
local apply_cursor_pos = function(win)
if win.file == nil or win.file.path == nil then
return
end
local pos = cursors[win.file.path]
if pos == nil then
return
end
win.selection.pos = tonumber(pos)
vis:feedkeys("zz")
end
local file_exists = function(path)
local f = io.open(path)
if f == nil then
return false
end
f:close()
return true
end
local read_cursors = function()
cursors = {}
local f = io.open(M.path)
if f == nil then
return
end
-- read positions per file path
for line in f:lines() do
for path, pos in string.gmatch(line, '(.+)%s(%d+)') do
cursors[path] = pos
end
end
f:close()
end
local write_cursors = function()
local f = io.open(M.path, 'w+')
if f == nil then return end
-- sort paths
local paths = {}
for path in pairs(cursors) do
table.insert(paths, path)
end
table.sort(paths)
-- buffer cursors string
local t = {}
for i, path in ipairs(paths) do
table.insert(t, string.format('%s %d', path, cursors[path]))
end
local s = table.concat(t, '\n')
f:write(s)
f:close()
end
local set_cursor_pos = function(win)
if win.file == nil or win.file.path == nil then
return
end
if not file_exists(win.file.path) then
return
end
cursors[win.file.path] = win.selection.pos
end
vis.events.subscribe(vis.events.INIT, read_cursors)
vis.events.subscribe(vis.events.WIN_OPEN, apply_cursor_pos)
vis.events.subscribe(vis.events.WIN_CLOSE, set_cursor_pos)
vis.events.subscribe(vis.events.QUIT, write_cursors)
return M
|
