diff options
Diffstat (limited to 'src/lua/clean.lua')
-rw-r--r-- | src/lua/clean.lua | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/src/lua/clean.lua b/src/lua/clean.lua deleted file mode 100644 index ba08d534..00000000 --- a/src/lua/clean.lua +++ /dev/null @@ -1,74 +0,0 @@ --- mark up comments and strings -STR1 = "\001" -STR2 = "\002" -STR3 = "\003" -STR4 = "\004" -REM = "\005" -ANY = "([\001-\005])" -ESC1 = "\006" -ESC2 = "\007" - -MASK = { -- the substitution order is important - {ESC1, "\\'"}, - {ESC2, '\\"'}, - {STR1, "'"}, - {STR2, '"'}, - {STR3, "%[%["}, - {STR4, "%]%]"}, - {REM , "%-%-"}, -} - -function mask (s) - for i = 1,getn(MASK) do - s = gsub(s,MASK[i][2],MASK[i][1]) - end - return s -end - -function unmask (s) - for i = 1,getn(MASK) do - s = gsub(s,MASK[i][1],MASK[i][2]) - end - return s -end - -function clean (s) - -- check for compilation error - local code = "return function () " .. s .. " end" - if not dostring(code) then - return nil - end - - local S = "" -- saved string - - s = mask(s) - - -- remove blanks and comments - while 1 do - local b,e,d = strfind(s,ANY) - if b then - S = S..strsub(s,1,b-1) - s = strsub(s,b+1) - if d==STR1 or d==STR2 then - e = strfind(s,d) - S = S ..d..strsub(s,1,e) - s = strsub(s,e+1) - elseif d==STR3 then - e = strfind(s,STR4) - S = S..d..strsub(s,1,e) - s = strsub(s,e+1) - elseif d==REM then - s = gsub(s,"[^\n]*(\n?)","%1",1) - end - else - S = S..s - break - end - end - -- eliminate unecessary spaces - S = gsub(S,"[ \t]+"," ") - S = gsub(S,"[ \t]*\n[ \t]*","\n") - S = unmask(S) - return S -end - |