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