diff options
| -rw-r--r-- | src/uglify.lua | 161 |
1 files changed, 83 insertions, 78 deletions
diff --git a/src/uglify.lua b/src/uglify.lua index f529fcb..8e52dca 100644 --- a/src/uglify.lua +++ b/src/uglify.lua @@ -1,78 +1,83 @@ -local u = {}
-local nonames = {"if", "for", "end", "do", "local", "then", "else", "elseif", "return", "goto", "function", "nil", "false", "true", "repeat", "return", "break", "and", "or", "not", "in", "repeat", "until", "while", "continue"}
-
-u.uglify = function(str)
- assert(str ~= nil, "Cannot uglify a nil string")
- assert(type(str) == "string", "Can only uglify strings")
- local avalchars = {}
- local capture_chars = {"%", "(", "[", "\13"}
- local skipchars = {}
-
- for k, v in pairs(capture_chars) do
- skipchars[string.byte(v, 1)] = true
- end
-
- for k = 1, 128 do
- if not skipchars[k] then
- if string.find(str, string.char(k)) then
- avalchars[k] = false
- else
- avalchars[k] = true
- end
- end
- end
-
- for k, v in pairs(skipchars) do
- avalchars[k] = false
- end
-
- local counts = {}
- for k, v in ipairs(nonames) do
- counts[v] = 0
- end
- for k,_ in pairs(counts) do
- for i,j in string.gmatch(str,k) do
- counts[k] = counts[k] + 1
- end
- end
-
- local prettifycode = [[
- local function p(s) local r = {%s} for k,v in pairs(r) do s = s:gsub(v[2],v[1]) end return s end]]
- local replacementtbl = {}
- local cursor = 1 --Start at 1 because 0 is the null character
-
- for k, v in ipairs(nonames) do
- if counts[v] ~= 0 then
- while not avalchars[cursor] do
- cursor = cursor + 1
- end
-
- replacementtbl[v] = cursor
- avalchars[cursor] = false
- end
- end
-
- assert(cursor < 128, "Unable to uglify file, not enough unused characters!")
- local replacementstr = {}
-
- for k, v in pairs(replacementtbl) do
- local trs = string.format("{%q,%q}", k, string.char(v))
- replacementstr[#replacementstr + 1] = trs
- end
-
- local frepstr = table.concat(replacementstr, ",")
- local pcd = string.format(prettifycode, frepstr)
-
- for k, v in pairs(replacementtbl) do
- str = str:gsub(k, string.char(v))
- end
-
- local numdeepcom = 1
-
- local uglified = table.concat({pcd, "\n", "return assert(loadstring(p([", string.rep("=", numdeepcom), "[", str, "]", string.rep("=", numdeepcom), "])))()"})
-
- return uglified
-end
-
---prettifycode = string.format(prettifycode,)
-return u
+local u = {} +local nonames = {"if", "for", "end", "do", "local", "then", "else", "elseif", "return", "goto", "function", "nil", "false", "true", "repeat", "return", "break", "and", "or", "not", "in", "repeat", "until", "while", "continue"} + +u.uglify = function(str) + assert(str ~= nil, "Cannot uglify a nil string") + assert(type(str) == "string", "Can only uglify strings") + local avalchars = {} + local capture_chars = {"%", "(", "[", "\13"} + local skipchars = {} + + for k, v in pairs(capture_chars) do + skipchars[string.byte(v, 1)] = true + end + + for k = 1, 128 do + if not skipchars[k] then + if string.find(str, string.char(k)) then + avalchars[k] = false + else + avalchars[k] = true + end + end + end + + for k, v in pairs(skipchars) do + avalchars[k] = false + end + + local counts = {} + for k, v in ipairs(nonames) do + counts[v] = 0 + end + for k,_ in pairs(counts) do + for i,j in string.gmatch(str,k) do + counts[k] = counts[k] + 1 + end + end + + local prettifycode = [[ + local function p(s) local r = {%s} for k,v in pairs(r) do s = s:gsub(v[2],v[1]) end return s end]] + local replacementtbl = {} + local cursor = 1 --Start at 1 because 0 is the null character + + for k, v in ipairs(nonames) do + if counts[v] ~= 0 then + while not avalchars[cursor] do + cursor = cursor + 1 + end + + replacementtbl[v] = cursor + avalchars[cursor] = false + end + end + + assert(cursor < 128, "Unable to uglify file, not enough unused characters!") + local replacementstr = {} + + for k, v in pairs(replacementtbl) do + local trs = string.format("{%q,%q}", k, string.char(v)) + replacementstr[#replacementstr + 1] = trs + end + + local frepstr = table.concat(replacementstr, ",") + local pcd = string.format(prettifycode, frepstr) + + for k, v in pairs(replacementtbl) do + str = str:gsub(k, string.char(v)) + end + + local numdeepcom = 1 + local loadname + if load then + loadname = "load" + else + loadname = "loadstring" + end + local uglified = table.concat({pcd, "\n", "return assert(",loadname,"(p([", string.rep("=", numdeepcom), "[", str, "]", string.rep("=", numdeepcom), "])))()"}) + + return uglified +end + +--prettifycode = string.format(prettifycode,) +return u |
