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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
-- mod-version:3
-- The general idea is to check if the file opened is valid utf-8
-- since lite-xl only supports UTF8 text, others can be safely assumed
-- to be binary
local core = require "core"
local common = require "core.common"
local style = require "core.style"
local DocView = require "core.docview"
local RootView = require "core.rootview"
local View = require "core.view"
local function validate_utf8(s, max_len)
local i, p, len = 1, 1, #s
while p <= len and i <= max_len do
if p == s:find("[%z\1-\127]", p) then p = p + 1
elseif p == s:find("[\194-\223][\128-\191]", p) then p = p + 2
elseif p == s:find( "\224[\160-\191][\128-\191]", p)
or p == s:find("[\225-\236][\128-\191][\128-\191]", p)
or p == s:find( "\237[\128-\159][\128-\191]", p)
or p == s:find("[\238-\239][\128-\191][\128-\191]", p) then p = p + 3
elseif p == s:find( "\240[\144-\191][\128-\191][\128-\191]", p)
or p == s:find("[\241-\243][\128-\191][\128-\191][\128-\191]", p)
or p == s:find( "\244[\128-\143][\128-\191][\128-\191]", p) then p = p + 4
else
return false
end
i = i + 1
end
return true
end
local function replace_view(this, that)
local node = core.root_view.root_node:get_node_for_view(this)
local idx = node:get_view_idx(this)
node:remove_view(core.root_view.root_node, this)
node:add_view(that, idx)
core.root_view.root_node:update_layout()
core.redraw = true
end
local msg = "This file is not displayed because it is either binary or uses an unsupported text encoding."
local cmd -- here's evil code again...
if PLATFORM == "Windows" then
cmd = "start %q"
elseif PLATFORM == "Linux" then
cmd = "xdg-open %q"
else
cmd = "open %q"
end
local opt = { "Open anyway", "Open with other program", "Close" }
local opt_actions = {
function(self)
-- open anyway
local view = DocView(core.open_doc(self.filename))
replace_view(self, view)
end,
function(self)
-- open externally
local node = core.root_view.root_node:get_node_for_view(self)
node:close_view(core.root_view.root_node, self)
system.exec(string.format(cmd, self.filename))
end,
function(self)
local node = core.root_view.root_node:get_node_for_view(self)
node:close_view(core.root_view.root_node, self)
end
}
local OpenExtView = View:extend()
function OpenExtView:new(filename)
OpenExtView.super.new(self)
self.filename = filename
end
function OpenExtView:get_name()
return common.basename(self.filename)
end
function OpenExtView:each_option()
return coroutine.wrap(function()
local w = (self.size.x - style.padding.x * (#opt + 1)) / #opt
local h = style.font:get_height() + style.padding.y
local x, y = self:get_content_offset()
x = x + style.padding.x
y = y + self.size.y / 2 + style.padding.y
for i, o in ipairs(opt) do
coroutine.yield(i, o, x, y, w, h)
x = x + w + style.padding.x
end
end)
end
function OpenExtView:on_mouse_moved(px, py, dx, dy)
OpenExtView.super.on_mouse_moved(self, px, py, dx, dy)
self.hovered = nil
for i, _, x, y, w, h in self:each_option() do
if px > x and px <= x + w and py > y and py <= y + h then
self.hovered = i
break
end
end
end
function OpenExtView:on_mouse_pressed(button, x, y, clicks)
if OpenExtView.super.on_mouse_pressed(self, button, x, y, clicks) then return end
if self.hovered then
opt_actions[self.hovered](self)
end
end
function OpenExtView:draw()
self:draw_background(style.background)
local x, y = self:get_content_offset()
local lh = style.font:get_height()
y = y + self.size.y / 2 - style.padding.y - lh
common.draw_text(style.font, style.text, msg, "center", x, y, self.size.x, lh)
for i, opt, x, y, w, h in self:each_option() do
local text_color = i == self.hovered and style.background or style.text
renderer.draw_rect(x, y, w, h, style.accent)
if i ~= self.hovered then
renderer.draw_rect(x + 1, y + 1, w - 2, h - 2, style.background)
end
common.draw_text(style.font, text_color, opt, "center", x, y, w, h)
end
end
local function validate_doc(doc)
local f = io.open(doc.abs_filename or "")
if not f then return true end
local str = f:read(128 * 4) -- max bytes for 128 codepoints
f:close()
return validate_utf8(str or "", 128)
end
local rootview_open_doc = RootView.open_doc
function RootView:open_doc(doc)
-- 128 * 4 == max number of bytes for 128 codepoints
if validate_doc(doc) then
return rootview_open_doc(self, doc)
else
local node = self:get_active_node_default()
local view = OpenExtView(doc.abs_filename or doc.filename)
node:add_view(view)
self.root_node:update_layout()
return view
end
end
|
