mirror of https://github.com/20kdc/OC-KittenOS.git
80 lines
2.4 KiB
Lua
80 lines
2.4 KiB
Lua
-- Copyright (C) 2018-2021 by KittenOS NEO contributors
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--
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-- Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted.
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--
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-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
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-- THIS SOFTWARE.
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local fmt
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fmt = {
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pad = function (t, len, centre, cut, ra)
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local l = unicode.len(t)
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local add = len - l
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if add > 0 then
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if centre then
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t = (" "):rep(math.floor(add / 2)) .. t .. (" "):rep(math.ceil(add / 2))
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else
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t = t .. (" "):rep(add)
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end
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end
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if cut then
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local i = 0
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if ra then
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i = -math.min(0, add)
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end
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t = unicode.sub(t, i + 1, len + i)
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end
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return t
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end,
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-- Expects safeTextFormat'd input
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fmtText = function (text, w)
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local nl = text:find("\n")
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if nl then
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local base = text:sub(1, nl - 1)
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local ext = text:sub(nl + 1)
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local baseT = fmt.fmtText(base, w)
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local extT = fmt.fmtText(ext, w)
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for _, v in ipairs(extT) do
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table.insert(baseT, v)
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end
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return baseT
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end
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if unicode.len(text) > w then
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local lastSpace
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for i = 1, w do
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if unicode.sub(text, i, i) == " " then
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-- Check this isn't an inserted space (unicode safe text format)
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local ok = true
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if i > 1 then
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if unicode.charWidth(unicode.sub(text, i - 1, i - 1)) ~= 1 then
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ok = false
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end
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end
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if ok then
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lastSpace = i
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end
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end
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end
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local baseText, extText
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if not lastSpace then
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-- Break at a 1-earlier boundary
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local wEffect = w
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if unicode.charWidth(unicode.sub(text, w, w)) ~= 1 then
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-- Guaranteed to be safe, so
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wEffect = wEffect - 1
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end
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baseText = unicode.sub(text, 1, wEffect)
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extText = unicode.sub(text, wEffect + 1)
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else
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baseText = unicode.sub(text, 1, lastSpace - 1)
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extText = unicode.sub(text, lastSpace + 1)
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end
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local full = fmt.fmtText(extText, w)
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table.insert(full, 1, fmt.pad(baseText, w))
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return full
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end
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return {fmt.pad(text, w)}
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end
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}
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return fmt
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