Editing war3map.j with LUA [!]

[Trigger.edge]

Recently I've been reading a bit about how to program in LUA, because I want to edit the war3map.j code, but not sure if this is possible.

Anyone know if there is any way to edit the war3map.j with LUA?

 

[Nestharus]

Yup. Simple file io.

 

[Trigger.edge]

thanks nes ^^....

but let's say I want to edit some lines with some specific names and then modify them, would be something like a sub-compiler xd, what functions should be used to achieve this?

 

[Nestharus]

Load the file into an array of strings, one string per line, and search for the line you want. You can use ladiq's MPQ exe and the system function to extract war3map.j and put it back in.

 

[Trigger.edge]

ladik's MPQ? mmm i don't know, the purpose is as follows:

I have a system X: the user use some functions and save the map, here is when LUA code enter in action: it search all the system X functions and then these will re-written into another code.

I remember that the war3map.j compiled by jasshelper is stored into the logs folder of newgen if I'm right, there could be edited directly and then import into the map. But the command //! import would not work in this case.

 

[PurgeandFire]

Use Lua's os.execute() to execute the mpq editor program to inject the edited war3map.j into your map.

EDIT: I don't remember Ladik's command line arguments, but you can always just use WurstScript's CLI extractor/injector:
https://github.com/peq/WurstScript/tree/master/MpqCL/Release

They use it for a similar purpose. It looks like this is the format:

"Usages:"
"mpqcl.exe extract <path_to_map> <file_to_extraxt> <where to store file>"
"mpqcl.exe inject <path_to_map> <path_in_mpq> <where to get file>"

I'm not sure whether Lua is executed before or after vJASS is compiled. If it is executed before, then you'll need to extract, process it, and then inject it back into your map. If it is executed after, then you can just use the war3map.j log, process it, and inject it into the map.

 

[Trigger.edge]

But i have a problem with this, if the user does not have wurst or the ladik MPQ, nobody would want to use the system

 

[PurgeandFire]

What exactly are you trying to do with your system? If this is for public, then yeah, having a bunch of extra implementation steps is a big turnoff. I thought this was for a personal project.

If it adds something significant or new, then it may see use--in which case, you can just ship the exe and the scripts all together. Otherwise, consider looking for a workaround.

 

[Trigger.edge]

as I told nestharus: I want to make a sub-compiler for a system (actually for my
http://www.hiveworkshop.com/forums/submissions-414/snipet-dimensional-array-265011/), this sub-compiler will change all functions called by the user replacing for native functions and and if possible it launches some errors, for example:

//input:
set var[0][1].integer=123

//output:
call SaveInteger(var,StringHash(",0,1"),123)

that would be great ^^

 

[WaterKnight]

You will hardly be able to rebuild mpq management in Lua, thus you have to ship something outside of JNGP.