lite-xl/data/plugins/projectsearch.lua

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2022-05-31 22:34:14 +02:00
-- mod-version:3
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local core = require "core"
local common = require "core.common"
local keymap = require "core.keymap"
local command = require "core.command"
local style = require "core.style"
local View = require "core.view"
---@class plugins.projectsearch.resultsview : core.view
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local ResultsView = View:extend()
ResultsView.context = "session"
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function ResultsView:new(path, text, fn)
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ResultsView.super.new(self)
self.scrollable = true
self.brightness = 0
self:begin_search(path, text, fn)
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end
function ResultsView:get_name()
return "Search Results"
end
local function find_all_matches_in_file(t, filename, fn)
local fp = io.open(filename)
if not fp then return t end
local n = 1
for line in fp:lines() do
local s = fn(line)
if s then
-- Insert maximum 256 characters. If we insert more, for compiled files, which can have very long lines
-- things tend to get sluggish. If our line is longer than 80 characters, begin to truncate the thing.
local start_index = math.max(s - 80, 1)
table.insert(t, { file = filename, text = (start_index > 1 and "..." or "") .. line:sub(start_index, 256 + start_index), line = n, col = s })
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core.redraw = true
end
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if n % 100 == 0 then coroutine.yield() end
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n = n + 1
core.redraw = true
end
fp:close()
end
function ResultsView:begin_search(path, text, fn)
self.search_args = { path, text, fn }
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self.results = {}
self.last_file_idx = 1
self.query = text
self.searching = true
self.selected_idx = 0
core.add_thread(function()
local i = 1
for dir_name, file in core.get_project_files() do
if file.type == "file" and (not path or (dir_name .. "/" .. file.filename):find(path, 1, true) == 1) then
local truncated_path = (dir_name == core.project_dir and "" or (dir_name .. PATHSEP))
find_all_matches_in_file(self.results, truncated_path .. file.filename, fn)
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end
self.last_file_idx = i
i = i + 1
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end
self.searching = false
self.brightness = 100
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core.redraw = true
end, self.results)
self.scroll.to.y = 0
end
function ResultsView:refresh()
self:begin_search(table.unpack(self.search_args))
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end
function ResultsView:on_mouse_moved(mx, my, ...)
ResultsView.super.on_mouse_moved(self, mx, my, ...)
self.selected_idx = 0
for i, item, x,y,w,h in self:each_visible_result() do
if mx >= x and my >= y and mx < x + w and my < y + h then
self.selected_idx = i
break
end
end
end
function ResultsView:on_mouse_pressed(...)
local caught = ResultsView.super.on_mouse_pressed(self, ...)
if not caught then
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return self:open_selected_result()
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end
end
function ResultsView:open_selected_result()
local res = self.results[self.selected_idx]
if not res then
return
end
core.try(function()
local dv = core.root_view:open_doc(core.open_doc(res.file))
core.root_view.root_node:update_layout()
dv.doc:set_selection(res.line, res.col)
dv:scroll_to_line(res.line, false, true)
end)
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return true
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end
function ResultsView:update()
self:move_towards("brightness", 0, 0.1)
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ResultsView.super.update(self)
end
function ResultsView:get_results_yoffset()
return style.font:get_height() + style.padding.y * 3
end
function ResultsView:get_line_height()
return style.padding.y + style.font:get_height()
end
function ResultsView:get_scrollable_size()
return self:get_results_yoffset() + #self.results * self:get_line_height()
end
function ResultsView:get_visible_results_range()
local lh = self:get_line_height()
local oy = self:get_results_yoffset()
local min = math.max(1, math.floor((self.scroll.y - oy) / lh))
return min, min + math.floor(self.size.y / lh) + 1
end
function ResultsView:each_visible_result()
return coroutine.wrap(function()
local lh = self:get_line_height()
local x, y = self:get_content_offset()
local min, max = self:get_visible_results_range()
y = y + self:get_results_yoffset() + lh * (min - 1)
for i = min, max do
local item = self.results[i]
if not item then break end
coroutine.yield(i, item, x, y, self.size.x, lh)
y = y + lh
end
end)
end
function ResultsView:scroll_to_make_selected_visible()
local h = self:get_line_height()
local y = self:get_results_yoffset() + h * (self.selected_idx - 1)
self.scroll.to.y = math.min(self.scroll.to.y, y)
self.scroll.to.y = math.max(self.scroll.to.y, y + h - self.size.y)
end
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function ResultsView:draw()
self:draw_background(style.background)
-- status
local ox, oy = self:get_content_offset()
local x, y = ox + style.padding.x, oy + style.padding.y
local files_number = core.project_files_number()
local per = common.clamp(files_number and self.last_file_idx / files_number or 1, 0, 1)
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local text
if self.searching then
if files_number then
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text = string.format("Searching %.f%% (%d of %d files, %d matches) for %q...",
per * 100, self.last_file_idx, files_number,
#self.results, self.query)
else
text = string.format("Searching (%d files, %d matches) for %q...",
self.last_file_idx, #self.results, self.query)
end
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else
text = string.format("Found %d matches for %q",
#self.results, self.query)
end
local color = common.lerp(style.text, style.accent, self.brightness / 100)
renderer.draw_text(style.font, text, x, y, color)
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-- horizontal line
local yoffset = self:get_results_yoffset()
local x = ox + style.padding.x
local w = self.size.x - style.padding.x * 2
local h = style.divider_size
local color = common.lerp(style.dim, style.text, self.brightness / 100)
renderer.draw_rect(x, oy + yoffset - style.padding.y, w, h, color)
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if self.searching then
renderer.draw_rect(x, oy + yoffset - style.padding.y, w * per, h, style.text)
end
-- results
local y1, y2 = self.position.y, self.position.y + self.size.y
for i, item, x,y,w,h in self:each_visible_result() do
local color = style.text
if i == self.selected_idx then
color = style.accent
renderer.draw_rect(x, y, w, h, style.line_highlight)
end
x = x + style.padding.x
local text = string.format("%s at line %d (col %d): ", item.file, item.line, item.col)
x = common.draw_text(style.font, style.dim, text, "left", x, y, w, h)
x = common.draw_text(style.code_font, color, item.text, "left", x, y, w, h)
end
self:draw_scrollbar()
end
---@param path string
---@param text string
---@param fn fun(line_text:string):...
---@return plugins.projectsearch.resultsview?
local function begin_search(path, text, fn)
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if text == "" then
core.error("Expected non-empty string")
return
end
local rv = ResultsView(path, text, fn)
core.root_view:get_active_node_default():add_view(rv)
return rv
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end
local function get_selected_text()
local view = core.active_view
local doc = (view and view.doc) and view.doc or nil
if doc then
return doc:get_text(table.unpack({ doc:get_selection() }))
end
end
local function normalize_path(path)
if not path then return nil end
path = common.normalize_path(path)
for i, project_dir in ipairs(core.project_directories) do
if common.path_belongs_to(path, project_dir.name) then
return project_dir.item.filename .. PATHSEP .. common.relative_path(project_dir.name, path)
end
end
return path
end
---@class plugins.projectsearch
local projectsearch = {}
---@type plugins.projectsearch.resultsview
projectsearch.ResultsView = ResultsView
---@param text string
---@param path string
---@param insensitive? boolean
---@return plugins.projectsearch.resultsview?
function projectsearch.search_plain(text, path, insensitive)
if insensitive then text = text:lower() end
return begin_search(path, text, function(line_text)
if insensitive then
return line_text:lower():find(text, nil, true)
else
return line_text:find(text, nil, true)
end
end)
end
---@param text string
---@param path string
---@param insensitive? boolean
---@return plugins.projectsearch.resultsview?
function projectsearch.search_regex(text, path, insensitive)
local re, errmsg
if insensitive then
re, errmsg = regex.compile(text, "i")
else
re, errmsg = regex.compile(text)
end
if not re then core.log("%s", errmsg) return end
return begin_search(path, text, function(line_text)
return regex.cmatch(re, line_text)
end)
end
---@param text string
---@param path string
---@param insensitive? boolean
---@return plugins.projectsearch.resultsview?
function projectsearch.search_fuzzy(text, path, insensitive)
if insensitive then text = text:lower() end
return begin_search(path, text, function(line_text)
if insensitive then
return common.fuzzy_match(line_text:lower(), text) and 1
else
return common.fuzzy_match(line_text, text) and 1
end
end)
end
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command.add(nil, {
["project-search:find"] = function(path)
core.command_view:enter("Find Text In " .. (normalize_path(path) or "Project"), {
text = get_selected_text(),
select_text = true,
submit = function(text)
projectsearch.search_plain(text, path, true)
end
})
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end,
["project-search:find-regex"] = function(path)
core.command_view:enter("Find Regex In " .. (normalize_path(path) or "Project"), {
submit = function(text)
projectsearch.search_regex(text, path, true)
end
})
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end,
["project-search:fuzzy-find"] = function(path)
core.command_view:enter("Fuzzy Find Text In " .. (normalize_path(path) or "Project"), {
text = get_selected_text(),
select_text = true,
submit = function(text)
projectsearch.search_fuzzy(text, path, true)
end
})
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end,
})
command.add(ResultsView, {
["project-search:select-previous"] = function()
local view = core.active_view
view.selected_idx = math.max(view.selected_idx - 1, 1)
view:scroll_to_make_selected_visible()
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end,
["project-search:select-next"] = function()
local view = core.active_view
view.selected_idx = math.min(view.selected_idx + 1, #view.results)
view:scroll_to_make_selected_visible()
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end,
["project-search:open-selected"] = function()
core.active_view:open_selected_result()
end,
["project-search:refresh"] = function()
core.active_view:refresh()
end,
["project-search:move-to-previous-page"] = function()
local view = core.active_view
view.scroll.to.y = view.scroll.to.y - view.size.y
end,
["project-search:move-to-next-page"] = function()
local view = core.active_view
view.scroll.to.y = view.scroll.to.y + view.size.y
end,
["project-search:move-to-start-of-doc"] = function()
local view = core.active_view
view.scroll.to.y = 0
end,
["project-search:move-to-end-of-doc"] = function()
local view = core.active_view
view.scroll.to.y = view:get_scrollable_size()
end
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})
keymap.add {
["f5"] = "project-search:refresh",
["ctrl+shift+f"] = "project-search:find",
["up"] = "project-search:select-previous",
["down"] = "project-search:select-next",
["return"] = "project-search:open-selected",
["pageup"] = "project-search:move-to-previous-page",
["pagedown"] = "project-search:move-to-next-page",
["ctrl+home"] = "project-search:move-to-start-of-doc",
["ctrl+end"] = "project-search:move-to-end-of-doc",
["home"] = "project-search:move-to-start-of-doc",
["end"] = "project-search:move-to-end-of-doc"
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}
return projectsearch