raze-gles/polymer/eduke32/source/lunatic/foreachmap.lua
helixhorned d5fa8ade49 build.lua: provide simplistic "readdefs()", use in foreachmap.lua.
So that symbolic tile names can be used when searching maps.

git-svn-id: https://svn.eduke32.com/eduke32@3212 1a8010ca-5511-0410-912e-c29ae57300e0
2012-11-18 19:01:39 +00:00

124 lines
4.6 KiB
Lua
Executable file

#!/usr/bin/env luajit
-- Generic map iterator.
-- The first cmdline arg is a name of a lua file (may be sans .lua) which must
-- be a module and is `require'd into this script, e.g. "stats" or "stats.lua".
-- First, a key named .init is looked up in the loaded module and if it exists,
-- it is run like .init(arg) (thus allowing it to parse the command-line
-- arguments and then potentially remove the ones it used).
-- If .init returns non-nil, this script aborts.
-- Otherwise, for each 2nd and following argument, if map loading succeeds,
-- .success(map, filename) is run, otherwise
-- .failure(filename, errmsg) is run if that key exists, or a standard error
-- message is printed to stderr.
-- Finally, if there is a .finish field in the module, it is run with no args.
-- forxcode example: print sprite numbers with lotag < -1 (interpreting lotag it as signed),
-- and for each matching sprite also print its lotag and picnum:
-- ./findmaps.sh ~/.eduke32/ "sprite: .lotag < -1 :: io. write(', '.. .lotag .. ' ' .. .picnum)"
-- The local 'd' provides defs loaded from ../../names.h, example:
-- ./findmaps.sh ~/.eduke32/ "sprite: .picnum>=d. CRACK1 and .picnum<=d. CRACK4"
local B = require "build"
local string = require "string"
local io = require "io"
local os = require "os"
if (#arg < 1) then
local wr = function(s) io.stdout:write(s) end
wr("Usage: ./foreachmap.lua <module[.lua]> [init args...] <filename.map> ...\n")
wr(" ./foreachmap.lua -e\"some_lua_code ...\" <filename.map> ...\n")
wr(" ./foreachmap.lua -e\"[sector|wall|sprite]: <condition on .<field>>\" <fn.map> ...\n\n")
wr("In the second form, the code is run as body of a function(map, fn)\n")
wr("and num{sectors,walls,sprites} and {sector,wall,sprite} do not\n")
wr("need to be qualified with the \"map.\" prefix.\n")
wr("The third form is a shortcut for quickly finding sectors/walls/sprites\n")
wr("satisfying a certain condition (see example below)\n\n")
wr("Examples: ./foreachmap.lua -e\"if map.numbunches==1 then print(fn) end\" ~/.eduke32/*.map\n")
wr(" ./foreachmap.lua -e\"sprite: .picnum==10 and .lotag==2563\" *.map\n")
wr(" ./foreachmap.lua -e\"sprite:: ... -- (only prints the file names)\n")
wr("(See foreachmap.lua for an example of the \"forxcode\" feature.)\n\n")
return
end
local modname = string.gsub(arg[1], "%.lua$", "")
local mod
if (modname:sub(1,2) == "-e") then
local body = modname:sub(3)
-- sector/wall/sprite finder shortcut
local b, e, what = body:find("^([a-z]+)::?")
if (what) then
local onlyfiles = (body:sub(e-1,e)=="::") -- "::" means "only list files" (like grep -l)
body = body:sub(e+1) -- clip off "bla::"
body = body:gsub("%.[a-z]+", what.."[i]%0") -- e.g. .lotag --> sprite[i].lotag
local perxcode
-- look for additional "print" code to be executed for each match
b, e, perxcode = body:find("::(.*)")
if (perxcode) then
body = body:sub(1,b-1)
if (onlyfiles) then
error("Per-x code can only be used with the ':' syntax (list each match)")
end
else
perxcode = ""
end
body =
"for i=0,num"..what.."s-1 do\n"..
" if ("..body..") then\n"..
(onlyfiles and "io.write(fn); return\n" or "io.write(fn..': '..i)\n") ..
perxcode .. "io.write('\\n')"..
"\n end\n"..
"end\n"
end
local successfunc, errmsg = loadstring(
"local d=require('build').readdefs('../../names.h') or error('Need ../../names.h')\n".. -- XXX
"local numsectors, numwalls, numsprites\n"
.."local sector, wall, sprite\n"
.."return function (map, fn) \n"
.." numsectors, numwalls, numsprites = map.numsectors, map.numwalls, map.numsprites\n"
.." sector, wall, sprite = map.sector, map.wall, map.sprite\n"
..body.."\n"
.."end"
)
if (successfunc==nil) then
io.stderr:write("Error loading string: "..errmsg.."\n")
os.exit(1)
end
mod = { success=successfunc() }
else
mod = require(modname)
end
if (mod.init) then
if (mod.init(arg) ~= nil) then
os.exit(1)
end
end
for i=2,#arg do
local fn = arg[i]
local map, errmsg = B.loadboard(fn)
if (map ~= nil) then
mod.success(map, fn)
else
if (mod.failure) then
mod.failure(fn, errmsg)
else
io.stderr:write(string.format("--- %s: %s\n", fn, errmsg))
end
end
end
if (mod.finish) then
mod.finish()
end