lucgen

lucgen is a dead simple script that runs Lua snippets embedded into C source code. It's an uncomplicated, convenient tool for code generation. Mind that the scripts are not sandboxed.

Simple example:

/* Lua snippets are enclosed in @ */
@
function declvars(type, prefix, count)
    for i = 1, count do
        -- use emit to yield some code
        emit(type .. ' ' .. prefix .. i .. ';\n')
    end
end
@

typedef struct S {
    @declvars('int', 'x', 10)@
} S;

Output:

/* Lua snippets are enclosed in @ */


typedef struct S {
    int x1;
    int x2;
    int x3;
    int x4;
    int x5;
    int x6;
    int x7;
    int x8;
    int x9;
    int x10;
    
} S;

Usage: lucgen.lua SOURCEFILE [-o TARGETFILE] [-l PRELOADFILE] [-h]

In a tad more detail:

SOURCEFILE is the file to process
The result is written to stdout by default, use -o to redirect it into TARGETFILE
You can optionally specify one or more extra Lua scripts to be run before processing the source with -l. (The flag is required before each script).
-h prints the help and exits

lucgen requires Lua 5.3 at minimum.

lipk/lucgen

lucgen