diff --git a/lib/xmlParser.lua b/lib/xmlParser.lua new file mode 100644 index 00000000..a2adb6a5 --- /dev/null +++ b/lib/xmlParser.lua @@ -0,0 +1,59 @@ + +local xml = {} + +------------------------------------------------------------------------------------------------------------ + +function xml.parseargs(s) + local arg = {} + string.gsub(s, "([%-%w]+)=([\"'])(.-)%2", function (w, _, a) + arg[w] = a + end) + return arg +end + +function xml.collect(s) + local stack = {} + local top = {} + table.insert(stack, top) + local ni,c,label,xarg, empty + local i, j = 1, 1 + while true do + ni,j,c,label,xarg, empty = string.find(s, "<(%/?)([%w:]+)(.-)(%/?)>", i) + if not ni then break end + local text = string.sub(s, i, ni-1) + if not string.find(text, "^%s*$") then + table.insert(top, text) + end + if empty == "/" then -- empty element tag + table.insert(top, {label=label, xarg=parseargs(xarg), empty=1}) + elseif c == "" then -- start tag + top = {label=label, xarg=parseargs(xarg)} + table.insert(stack, top) -- new level + else -- end tag + local toclose = table.remove(stack) -- remove top + top = stack[#stack] + if #stack < 1 then + error("nothing to close with "..label) + end + if toclose.label ~= label then + error("trying to close "..toclose.label.." with "..label) + end + table.insert(top, toclose) + end + i = j+1 + end + local text = string.sub(s, i) + if not string.find(text, "^%s*$") then + table.insert(stack[#stack], text) + end + if #stack > 1 then + error("unclosed "..stack[#stack].label) + end + return stack[1] +end + +------------------------------------------------------------------------------------------------------------ + +return xml + +