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-- mod-version:3
local core = require "core"
local translate = require "core.doc.translate"
local config = require "core.config"
local common = require "core.common"
local DocView = require "core.docview"
local command = require "core.command"
local keymap = require "core.keymap"
config.plugins.autoinsert = common.merge({ map = {
["["] = "]",
["{"] = "}",
["("] = ")",
['"'] = '"',
["'"] = "'",
["`"] = "`",
} }, config.plugins.autoinsert)
local function is_closer(chr)
for _, v in pairs(config.plugins.autoinsert.map) do
if v == chr then
return true
end
end
end
local function count_char(text, chr)
local count = 0
for _ in text:gmatch(chr) do
count = count + 1
end
return count
end
local on_text_input = DocView.on_text_input
function DocView:on_text_input(text)
-- Don't insert on multiselections
if #self.doc.selections > 4 then return on_text_input(self, text) end
local mapping = config.plugins.autoinsert.map[text]
-- prevents plugin from operating on `CommandView`
if getmetatable(self) ~= DocView then
return on_text_input(self, text)
end
-- wrap selection if we have a selection
if mapping and self.doc:has_selection() then
local l1, c1, l2, c2, swap = self.doc:get_selection(true)
self.doc:insert(l2, c2, mapping)
self.doc:insert(l1, c1, text)
self.doc:set_selection(l1, c1, l2, c2 + 2, swap)
return
end
-- skip inserting closing text
local chr = self.doc:get_char(self.doc:get_selection())
if text == chr and is_closer(chr) then
self.doc:move_to(1)
return
end
-- don't insert closing quote if we have a non-even number on this line
local line = self.doc:get_selection()
if text == mapping and count_char(self.doc.lines[line], text) % 2 == 1 then
return on_text_input(self, text)
end
-- auto insert closing bracket
if mapping and (chr:find("%s") or is_closer(chr) and chr ~= '"') then
on_text_input(self, text)
on_text_input(self, mapping)
self.doc:move_to(-1)
return
end
on_text_input(self, text)
end
local function predicate()
return core.active_view:is(DocView)
and #core.active_view.doc.selections <= 4 and not core.active_view.doc:has_selection(), core.active_view.doc
end
command.add(predicate, {
["autoinsert:backspace"] = function(doc)
local l, c = doc:get_selection()
if c > 1 then
local chr = doc:get_char(l, c)
local mapped = config.plugins.autoinsert.map[doc:get_char(l, c - 1)]
if mapped and mapped == chr then
doc:delete_to(1)
end
end
command.perform "doc:backspace"
end,
["autoinsert:delete-to-previous-word-start"] = function(doc)
local le, ce = translate.previous_word_start(doc, doc:get_selection())
while true do
local l, c = doc:get_selection()
if l == le and c == ce then
break
end
command.perform "autoinsert:backspace"
end
end,
})
keymap.add {
["backspace"] = "autoinsert:backspace",
["ctrl+backspace"] = "autoinsert:delete-to-previous-word-start",
["ctrl+shift+backspace"] = "autoinsert:delete-to-previous-word-start",
}
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