diff options
Diffstat (limited to 'lualibs-util-prs.lua')
| -rw-r--r-- | lualibs-util-prs.lua | 49 |
1 files changed, 38 insertions, 11 deletions
diff --git a/lualibs-util-prs.lua b/lualibs-util-prs.lua index 01138f1..650a7ea 100644 --- a/lualibs-util-prs.lua +++ b/lualibs-util-prs.lua @@ -36,6 +36,8 @@ local lbrace = P("{") local rbrace = P("}") local lparent = P("(") local rparent = P(")") +local lbracket = P("[") +local rbracket = P("]") local period = S(".") local punctuation = S(".,:;") local spacer = lpegpatterns.spacer @@ -44,8 +46,9 @@ local newline = lpegpatterns.newline local anything = lpegpatterns.anything local endofstring = lpegpatterns.endofstring -local nobrace = 1 - (lbrace + rbrace ) -local noparent = 1 - (lparent + rparent) +local nobrace = 1 - (lbrace + rbrace ) +local noparent = 1 - (lparent + rparent) +local nobracket = 1 - (lbracket + rbracket) -- we could use a Cf Cg construct @@ -56,11 +59,12 @@ lpegpatterns.balanced = P { [2] = left * V(1) * right } -local nestedbraces = P { lbrace * (nobrace + V(1))^0 * rbrace } -local nestedparents = P { lparent * (noparent + V(1))^0 * rparent } -local spaces = space^0 -local argument = Cs((lbrace/"") * ((nobrace + nestedbraces)^0) * (rbrace/"")) -local content = (1-endofstring)^0 +local nestedbraces = P { lbrace * (nobrace + V(1))^0 * rbrace } +local nestedparents = P { lparent * (noparent + V(1))^0 * rparent } +local nestedbrackets = P { lbracket * (nobracket + V(1))^0 * rbracket } +local spaces = space^0 +local argument = Cs((lbrace/"") * ((nobrace + nestedbraces)^0) * (rbrace/"")) +local content = (1-endofstring)^0 lpegpatterns.nestedbraces = nestedbraces -- no capture lpegpatterns.nestedparents = nestedparents -- no capture @@ -79,10 +83,6 @@ local pattern_b = spaces * comma^0 * spaces * (key * ((spaces * equal * spaces * -- "a=1, b=2, c=3, d={a{b,c}d}, e=12345, f=xx{a{b,c}d}xx, g={}" : outer {} removes, leading spaces ignored --- todo: rewrite to fold etc --- --- parse = lpeg.Cf(lpeg.Carg(1) * lpeg.Cg(key * equal * value) * separator^0,rawset)^0 -- lpeg.match(parse,"...",1,hash) - local hash = { } local function set(key,value) @@ -193,6 +193,33 @@ function parsers.settings_to_array(str,strict) end end +function parsers.settings_to_numbers(str) + if not str or str == "" then + return { } + end + if type(str) == "table" then + -- fall through + elseif find(str,",",1,true) then + str = lpegmatch(pattern,str) + else + return { tonumber(str) } + end + for i=1,#str do + str[i] = tonumber(str[i]) + end + return str +end + +local value = P(lbrace * C((nobrace + nestedbraces)^0) * rbrace) + + C((nestedbraces + nestedbrackets + nestedparents + (1-comma))^0) +local pattern = spaces * Ct(value*(separator*value)^0) + +function parsers.settings_to_array_obey_fences(str) + return lpegmatch(pattern,str) +end + +-- inspect(parsers.settings_to_array_obey_fences("url(http://a,b.c)")) + -- this one also strips end spaces before separators -- -- "{123} , 456 " -> "123" "456" |