“Module:Escape”的意思、由来-开放百科全书

词条

Module:Escape

释义

local escape = {

char = function(self, chr, args)

args = args or {}

local safe = args.safeChr or string.char(13)

chr = tostring(chr or '\\\\')

self[1] = ('%s0%%s%s'):format(

('%x%s%s'):format(chr:byte(), safe, safe),

('%s%x'):format(safe, chr:byte())

)

if not self[self[1]] then

self[self[1]] = {

char = chr,

text = ('%s(.)'):format(chr),

undo = self[1]:format'(%d+)'

}

end

return args.text and self:text(args.text)

or args.undo and self:undo(args.undo, chr)

or args.kill and self:kill(args.kill)

or self

end,

exec = function(self, text, mode, newEscape)

local target = self[self[1] or self:char() and self[1]]

for v in text:gfind(target[mode]) do

text = text:gsub(

mode == 'text' and

('%s%s'):format(target.char, v:gsub('%W', '%%%1'))

or self[1]:format(v),

mode == 'text' and

self[1]:format(v:byte())

or (newEscape or ) .. v:char()

)

end

return text

end,

text = function(self, text)

return self:exec(type(text) == 'table' and text[1] or text, 'text')

end,

undo = function(self, text, newEscape)

if type(text) == 'table' then

text, newEscape = unpack(text)

end

return self:exec(text, 'undo', newEscape)

end,

kill = function(self, text, chars, newEscape)

if type(text) == 'table' then

text, chars, newEscape = unpack(text)

end

return self:undo(self:text(text):gsub(chars or , ), newEscape)

end

}

function escape.main(frame)

local args, family = {}, {frame:getParent(), frame}

for f = 1, 2 do

for k, v in pairs(family[f] and family[f].args or {}) do

args[k] = args[k] or v:match('^%s*(.-)%s*$')

end

if args.mode == 'char' then

return escape:char(args.char or args[2], args)

end

return escape[args.mode](escape:char(args.char), args)

end

return escape

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