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local xml = {}
function xml.filename(name)
return name .. ".xml"
end
-- basic xml parser for mamecheat only
local function xml_parse(data)
local function fix_gt(str)
str = str:gsub(">=", " ge ")
str = str:gsub(">", " gt ")
return str
end
data = data:gsub("(condition=%b\"\")", fix_gt)
local cheat_str = data:match("<mamecheat.->(.*)</ *mamecheat>")
local function get_tags(str)
local arr = {}
while str ~= "" do
local tag, attr, stop
tag, attr, stop, str = str:match("<([%w!%-]+) ?(.-)(/?)[ %-]->(.*)")
if not tag then
return arr
end
if tag:sub(0, 3) ~= "!--" then
local block = {}
if stop ~= "/" then
local nest
nest, str = str:match("(.-)</ *" .. tag .. " *>(.*)")
local children = get_tags(nest)
if not next(children) then
nest = nest:gsub("<!--.-%-%->", "")
nest = nest:gsub("^%s*(.-)%s*$", "%1")
block["text"] = nest
else
block = children
end
end
if attr then
for name, value in attr:gmatch("(%w-)=\"(.-)\"") do
block[name] = value:gsub("^%s*(.-)%s*$", "%1")
end
end
if not arr[tag] then
arr[tag] = {}
end
arr[tag][#arr[tag] + 1] = block
end
end
return arr
end
local xml_table = get_tags(cheat_str)
return xml_table
end
function xml.conv_cheat(data)
local spaces, regions, output
data = xml_parse(data)
local cpu_spaces = {}
for tag, device in pairs(manager.machine.devices) do
local sp
for name, space in pairs(device.spaces) do
if not sp then
sp = {}
cpu_spaces[tag] = sp
end
sp[space.index] = space.name
end
end
local function convert_expr(data)
local write = false
local function convert_memref(cpu, phys, space, width, addr, rw)
-- debug expressions address spaces by index not by name
local function get_space_name(index)
local prefix = cpu:sub(1, 1)
if prefix == ":" then
return cpu_spaces[cpu][index]
else
return cpu_spaces[":" .. cpu][index]
end
end
local mod = ""
if space == "p" then
fullspace = get_space_name(0)
elseif space == "d" then
fullspace = get_space_name(1)
elseif space == "i" then
fullspace = get_space_name(2)
elseif space == "r" then
fullspace = get_space_name(0)
mod = "_direct"
space = "p"
elseif space == "o" then
fullspace = get_space_name(3)
mod = "_direct"
space = "o"
end
if width == "b" then
width = "u8"
elseif width == "w" then
width = "u16"
elseif width == "d" then
width = "u32"
elseif width == "q" then
width = "u64"
end
local prefix = cpu:sub(1,1)
if prefix == ":" then
cpu = cpu:sub(2,cpu:len())
end
local cpuname = cpu:gsub(":", "_")
if space == "m" then
regions[cpuname .. space] = ":" .. cpu
else
spaces[cpuname .. space] = { tag = ":" .. cpu, type = fullspace }
if phys ~= "p" and mod == "" then
mod = "v"
end
end
local ret
if rw == "=" then
write = true
ret = string.format("%s%s:write%s_%s(%s,", cpuname, space, mod, width, addr)
else
ret = string.format("%s%s:read%s_%s(%s)", cpuname, space, mod, width, addr)
end
if rw == "==" then
ret = ret .. "=="
end
return ret
end
local function frame()
output = true
return "screen:frame_number()"
end
data = data:lower()
data = data:gsub("^[(](.-)[)]$", "%1")
data = data:gsub("%f[%w]lt%f[%W]", "<")
data = data:gsub("%f[%w]ge%f[%W]", ">=")
data = data:gsub("%f[%w]gt%f[%W]", ">")
data = data:gsub("%f[%w]le%f[%W]", "<=")
data = data:gsub("%f[%w]eq%f[%W]", "==")
data = data:gsub("%f[%w]ne%f[%W]", "~=")
data = data:gsub("!=", "~=")
data = data:gsub("||", " or ")
data = data:gsub("%f[%w]frame%f[%W]", frame)
data = data:gsub("%f[%w]band%f[%W]", "&")
data = data:gsub("%f[%w]bor%f[%W]", "|")
data = data:gsub("%f[%w]rshift%f[%W]", ">>")
data = data:gsub("%f[%w]lshift%f[%W]", "<<")
data = data:gsub("(%w-)%+%+", "%1 = %1 + 1")
data = data:gsub("%f[%w](%x+)%f[%W]", "0x%1")
-- 0?x? avoids an issue where db (data region byte) is interepeted as a hex number
data = data:gsub("([%w_:]-)%.(p?)0?x?([pmrodi3])([bwdq])@(%w+) *(=*)", convert_memref)
local count
repeat
data, count = data:gsub("([%w_:]-)%.(p?)0?x?([pmrodi3])([bwdq])@(%b()) *(=*)", convert_memref)
until count == 0
if write then
data = data .. ")"
end
return data
end
local function convert_output(data)
local str = "draw_text(ui,"
if data["align"] then
str = str .. data["align"]
else
str = str .. "\"left\""
end
if data["line"] then
str = str .. ",\"" .. data["line"] .. "\""
else
str = str .. ", \"auto\""
end
str = str .. ", nil,\"" .. data["format"] .. "\""
if data["argument"] then
for count, block in pairs(data["argument"]) do
local expr = convert_expr(block["text"])
if block["count"] then
for i = 0, block["count"] - 1 do
str = str .. "," .. expr:gsub("argindex", i)
end
else
str = str .. "," .. expr
end
end
end
return str .. ")"
end
local function convert_script(data)
local str = ""
local state = "run"
for tag, block in pairs(data) do
if tag == "state" then
state = block
elseif tag == "action" then
for count, action in pairs(block) do
if action["condition"] then
str = str .. " if (" .. convert_expr(action["condition"]) .. ") then "
for expr in action["text"]:gmatch("([^,]+)") do
str = str .. convert_expr(expr) .. " "
end
str = str .. "end"
else
for expr in action["text"]:gmatch("([^,]+)") do
str = str .. " " .. convert_expr(expr) .. " "
end
end
end
elseif tag == "output" then
output = true
for count, output in pairs(block) do
if output["condition"] then
str = str .. " if " .. convert_expr(output["condition"]) .. " then "
str = str .. convert_output(output) .. " end "
else
str = str .. " " .. convert_output(output) .. " "
end
end
end
end
return state, str
end
for count, cheat in pairs(data["cheat"]) do
spaces = {}
regions = {}
output = false
for tag, block in pairs(cheat) do
if tag == "comment" then
data["cheat"][count]["comment"] = block[1]["text"]
elseif tag == "script" then
local scripts = {}
for count2, script in pairs(block) do
local state, str = convert_script(script)
scripts[state] = str
end
data["cheat"][count]["script"] = scripts
elseif tag == "parameter" then
if block[1]["min"] then
block[1]["min"] = block[1]["min"]:gsub("%$","0x")
end
if block[1]["max"] then
block[1]["max"] = block[1]["max"]:gsub("%$","0x")
end
if block[1]["step"] then
block[1]["step"] = block[1]["step"]:gsub("%$","0x")
end
data["cheat"][count]["parameter"] = block[1]
end
end
if next(spaces) then
data["cheat"][count]["space"] = {}
for name, space in pairs(spaces) do
data["cheat"][count]["space"][name] = { type = space["type"], tag = space["tag"] }
end
end
if next(regions) then
data["cheat"][count]["region"] = {}
for name, region in pairs(regions) do
data["cheat"][count]["region"][name] = region
end
end
if output then
data["cheat"][count]["screen"] = {}
data["cheat"][count]["screen"]["screen"] = ":screen"
data["cheat"][count]["screen"]["ui"] = "ui"
end
end
return data["cheat"]
end
return xml
|
