64 lines
1.6 KiB
Lua
64 lines
1.6 KiB
Lua
local core = require "core"
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local config = require "core.config"
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local command = require "core.command"
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local keymap = require "core.keymap"
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local function wordwrap_text(text, limit)
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local t = {}
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local n = 0
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for word in text:gmatch("%S+") do
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if n + #word > limit then
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table.insert(t, "\n")
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n = 0
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elseif #t > 0 then
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table.insert(t, " ")
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end
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table.insert(t, word)
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n = n + #word + 1
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end
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return table.concat(t)
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end
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command.add("core.docview", {
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["reflow:reflow"] = function()
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local doc = core.active_view.doc
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doc:replace(function(text)
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local prefix_set = "[^%w\n%[%](){}`'\"]*"
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-- get line prefix and trailing whitespace
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local prefix1 = text:match("^\n*" .. prefix_set)
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local prefix2 = text:match("\n(" .. prefix_set .. ")", #prefix1+1)
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local trailing = text:match("%s*$")
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if not prefix2 or prefix2 == "" then
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prefix2 = prefix1
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end
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-- strip all line prefixes and trailing whitespace
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text = text:sub(#prefix1+1, -#trailing - 1):gsub("\n" .. prefix_set, "\n")
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-- split into blocks, wordwrap and join
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local line_limit = config.line_limit - #prefix1
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local blocks = {}
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text = text:gsub("\n\n", "\0")
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for block in text:gmatch("%Z+") do
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table.insert(blocks, wordwrap_text(block, line_limit))
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end
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text = table.concat(blocks, "\n\n")
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-- add prefix to start of lines
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text = prefix1 .. text:gsub("\n", "\n" .. prefix2) .. trailing
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return text
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end)
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end,
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})
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keymap.add {
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["ctrl+shift+q"] = "reflow:reflow"
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}
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