edtris/vendor/lite/data/plugins/tabularize.lua

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2021-02-07 21:56:19 +00:00
local core = require "core"
local command = require "core.command"
local translate = require "core.doc.translate"
local function gmatch_to_array(text, ptn)
local res = {}
for x in text:gmatch(ptn) do
table.insert(res, x)
end
return res
end
local function tabularize_lines(lines, delim)
local rows = {}
local cols = {}
-- split lines at delimiters and get maximum width of columns
local ptn = "[^" .. delim:sub(1,1):gsub("%W", "%%%1") .. "]+"
for i, line in ipairs(lines) do
rows[i] = gmatch_to_array(line, ptn)
for j, col in ipairs(rows[i]) do
cols[j] = math.max(#col, cols[j] or 0)
end
end
-- pad columns with space
for _, row in ipairs(rows) do
for i = 1, #row - 1 do
row[i] = row[i] .. string.rep(" ", cols[i] - #row[i])
end
end
-- write columns back to lines array
for i, line in ipairs(lines) do
lines[i] = table.concat(rows[i], delim)
end
end
command.add("core.docview", {
["tabularize:tabularize"] = function()
core.command_view:enter("Tabularize On Delimiter", function(delim)
if delim == "" then delim = " " end
local doc = core.active_view.doc
local line1, col1, line2, col2, swap = doc:get_selection(true)
line1, col1 = doc:position_offset(line1, col1, translate.start_of_line)
line2, col2 = doc:position_offset(line2, col2, translate.end_of_line)
doc:set_selection(line1, col1, line2, col2, swap)
doc:replace(function(text)
local lines = gmatch_to_array(text, "[^\n]*\n?")
tabularize_lines(lines, delim)
return table.concat(lines)
end)
end)
end,
})