dfhack/plugins/Dfusion/luafiles/patterns/xml_angavrilov.lua

55 lines
1.4 KiB
Lua

2012-02-22 16:32:38 -07:00
function parseargs(s)
local arg = {}
string.gsub(s, "(%w+)=([\"'])(.-)%2", function (w, _, a)
arg[w] = a
end)
return arg
end
function 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
function parseXmlFile(path)
local f, e = io.open(path, "r")
local xml = f:read("*a")
return collect(xml)[1]
end