diff options
Diffstat (limited to 'lualibs-util-str.lua')
| -rw-r--r-- | lualibs-util-str.lua | 139 |
1 files changed, 102 insertions, 37 deletions
diff --git a/lualibs-util-str.lua b/lualibs-util-str.lua index af8b165..f04f0e5 100644 --- a/lualibs-util-str.lua +++ b/lualibs-util-str.lua @@ -20,8 +20,16 @@ local utfchar, utfbyte = utf.char, utf.byte ----- loadstripped = utilities.lua.loadstripped ----- setmetatableindex = table.setmetatableindex -local loadstripped = _LUAVERSION < 5.2 and load or function(str) - return load(dump(load(str),true)) -- it only makes sense in luajit and luatex where we have a stipped load +-- local loadstripped = _LUAVERSION < 5.2 and load or function(str) +-- return load(dump(load(str),true)) -- it only makes sense in luajit and luatex where we have a stipped load +-- end + +local loadstripped = function(str,shortcuts) + if shortcuts then + return load(dump(load(str),true),nil,nil,shortcuts) + else + return load(dump(load(str),true)) + end end -- todo: make a special namespace for the formatter @@ -291,33 +299,69 @@ function number.sparseexponent(f,n) return tostring(n) end -local preamble = [[ -local type = type -local tostring = tostring -local tonumber = tonumber -local format = string.format -local concat = table.concat -local signed = number.signed -local points = number.points -local basepoints = number.basepoints -local utfchar = utf.char -local utfbyte = utf.byte -local lpegmatch = lpeg.match -local nspaces = string.nspaces -local tracedchar = string.tracedchar -local autosingle = string.autosingle -local autodouble = string.autodouble -local sequenced = table.sequenced -local formattednumber = number.formatted -local sparseexponent = number.sparseexponent -]] - local template = [[ %s %s return function(%s) return %s end ]] +-- local environment = { +-- lpeg = lpeg, +-- type = type, +-- string = string, +-- number = number, +-- table = table, +-- utf = utf, +-- } +-- +-- local preamble = [[ +-- local type = type +-- local tostring = tostring +-- local tonumber = tonumber +-- local format = string.format +-- local concat = table.concat +-- local signed = number.signed +-- local points = number.points +-- local basepoints = number.basepoints +-- local utfchar = utf.char +-- local utfbyte = utf.byte +-- local lpegmatch = lpeg.match +-- local nspaces = string.nspaces +-- local tracedchar = string.tracedchar +-- local autosingle = string.autosingle +-- local autodouble = string.autodouble +-- local sequenced = table.sequenced +-- local formattednumber = number.formatted +-- local sparseexponent = number.sparseexponent +-- ]] + +local environment = { + global = global or _G, + lpeg = lpeg, + type = type, + tostring = tostring, + tonumber = tonumber, + format = string.format, + concat = table.concat, + signed = number.signed, + points = number.points, + basepoints = number.basepoints, + utfchar = utf.char, + utfbyte = utf.byte, + lpegmatch = lpeg.match, + nspaces = string.nspaces, + tracedchar = string.tracedchar, + autosingle = string.autosingle, + autodouble = string.autodouble, + sequenced = table.sequenced, + formattednumber = number.formatted, + sparseexponent = number.sparseexponent, +} + +local preamble = "" + +-- -- -- + local arguments = { "a1" } -- faster than previously used (select(n,...)) setmetatable(arguments, { __index = @@ -740,28 +784,37 @@ local builder = Cs { "start", -- we can be clever and only alias what is needed +-- local direct = Cs ( +-- P("%")/"" +-- * Cc([[local format = string.format return function(str) return format("%]]) +-- * (S("+- .") + R("09"))^0 +-- * S("sqidfgGeExXo") +-- * Cc([[",str) end]]) +-- * P(-1) +-- ) + local direct = Cs ( - P("%")/"" - * Cc([[local format = string.format return function(str) return format("%]]) - * (S("+- .") + R("09"))^0 - * S("sqidfgGeExXo") - * Cc([[",str) end]]) - * P(-1) - ) + P("%") + * (S("+- .") + R("09"))^0 + * S("sqidfgGeExXo") + * P(-1) / [[local format = string.format return function(str) return format("%0",str) end]] +) local function make(t,str) local f local p local p = lpegmatch(direct,str) if p then + -- f = loadstripped(p)() + -- print("builder 1 >",p) f = loadstripped(p)() else n = 0 p = lpegmatch(builder,str,1,"..",t._extensions_) -- after this we know n if n > 0 then p = format(template,preamble,t._preamble_,arguments[n],p) --- print("builder>",p) - f = loadstripped(p)() + -- print("builder 2 >",p) + f = loadstripped(p,t._environment_)() -- t._environment is not populated (was experiment) else f = function() return str end end @@ -817,7 +870,11 @@ strings.formatters = { } -- clear that table when a threshold is reached function strings.formatters.new() - local t = { _extensions_ = { }, _preamble_ = "", _type_ = "formatter" } + local e = { } -- better make a copy as we can overload + for k, v in next, environment do + e[k] = v + end + local t = { _extensions_ = { }, _preamble_ = "", _environment_ = e, _type_ = "formatter" } setmetatable(t, { __index = make, __call = use }) return t end @@ -838,8 +895,12 @@ string.formatter = function(str,...) return formatters[str](...) end -- someti local function add(t,name,template,preamble) if type(t) == "table" and t._type_ == "formatter" then t._extensions_[name] = template or "%s" - if preamble then + if type(preamble) == "string" then t._preamble_ = preamble .. "\n" .. t._preamble_ -- so no overload ! + elseif type(preamble) == "table" then + for k, v in next, preamble do + t._environment_[k] = v + end end end end @@ -856,9 +917,13 @@ patterns.luaquoted = Cs(Cc('"') * ((1-S('"\n'))^1 + P('"')/'\\"' + P('\n')/'\\n" -- escaping by lpeg is faster for strings without quotes, slower on a string with quotes, but -- faster again when other q-escapables are found (the ones we don't need to escape) -add(formatters,"xml", [[lpegmatch(xmlescape,%s)]],[[local xmlescape = lpeg.patterns.xmlescape]]) -add(formatters,"tex", [[lpegmatch(texescape,%s)]],[[local texescape = lpeg.patterns.texescape]]) -add(formatters,"lua", [[lpegmatch(luaescape,%s)]],[[local luaescape = lpeg.patterns.luaescape]]) +-- add(formatters,"xml", [[lpegmatch(xmlescape,%s)]],[[local xmlescape = lpeg.patterns.xmlescape]]) +-- add(formatters,"tex", [[lpegmatch(texescape,%s)]],[[local texescape = lpeg.patterns.texescape]]) +-- add(formatters,"lua", [[lpegmatch(luaescape,%s)]],[[local luaescape = lpeg.patterns.luaescape]]) + +add(formatters,"xml", [[lpegmatch(xmlescape,%s)]],{ xmlescape = lpeg.patterns.xmlescape }) +add(formatters,"tex", [[lpegmatch(texescape,%s)]],{ texescape = lpeg.patterns.texescape }) +add(formatters,"lua", [[lpegmatch(luaescape,%s)]],{ luaescape = lpeg.patterns.luaescape }) -- -- yes or no: -- |