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-- mod-version:2 -- lite-xl 2.0
-- 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)
--[[
MIT LICENSE
Copyright (c) 2013 Enrique García Cota
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
]]
local p, len = 1, #s
while p <= 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
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 rootview_open_doc = RootView.open_doc
function RootView:open_doc(doc)
local line = string.sub(doc.lines[1] or "", 1, 128)
if line == "\n" or line == "" and validate_utf8(line) 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
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