LuaComp/manual

Building

Luapreproc

git clone https://github.com/Adorable-Catgirl/LuaComp.git
cd LuaComp
luapreproc src/init.lua /tmp/luacomp.part
echo "#!/usr/bin/env lua5.3" | cat - /tmp/luacomp.part > ~/bin/luacomp
chmod +x ~/bin/luacomp

LuaComp

git clone https://github.com/Adorable-Catgirl/LuaComp.git
cd LuaComp
luacomp -xlua5.3 -mluamin -O ~/bin/luacomp src/init.lua
chmod +x ~/bin/luacomp

By hand

Ha, no.

Usage

luacomp -h outputs:

Usage: /tmp/luacomp [-h] [-O <output>] [-m <minifier>]
       [--generator-code] [--verbose] [--post-processors]
       [--directives] [-v] <input> [-x [<executable>]]

LuaComp v1.2.0
A preprocessor+postprocessor written in Lua.

Arguments:
   input                 Input file (- for STDIN)

Options:
   -h, --help            Show this help message and exit.
         -O <output>,    Output file. (- for STDOUT) (default: -)
   --output <output>
           -m <minifier>,
   --minifier <minifier>
                         Sets the minifier (default: none)
             -x [<executable>],
   --executable [<executable>]
                         Makes the script an executable (default: current lua version)
   --generator-code      Outputs only the code from the generator.
   --verbose             Verbose output. (Debugging)
   --post-processors     Lists postprocessors
   --directives          Lists directives
   -v, --version         Prints the version and exits

Directives

LuaComp currently ships with four built-in directives. More directives can be installed at /usr/share/luacomp/directives and ~/.local/share/luacomp/directives.

include

Usage: --#include "path" Include tells the preprocessor to include the file specified. The file included will also be preprocessed.

define

Usage --#define "var" "value" Defines the env var for this session.

error

Usage --#error "text" Throws an error and stops the preprocessor.

loadmod

Note: Depreciated, use the directive dirs. Usage --#loadmod "lua_file.lua" Loads a directive module. Don't use this. I just don't want to have to bump the major version number.

Postprocessors

LuaComp currently ships with built-in support for three postprocessors. More can be installed at /usr/share/luacomp/postproc and ~/.local/share/luacomp/postproc

luamin

Language: Lua 5.1 to 5.3 Minifies Lua.

uglify

Language: JavaScript Minifies JS. Options are --compress --mangle.

bython(2)

Language: Bython (Python 3.x and 2.x) Turns Bython into Python.

Syntax

The syntax was made for Lua, but it works well enough for some other languages.

Directives

Syntax: --#directive "arguments"

Lua code

Syntax: @[[ code ]] Note that this can be used for macros. See examples/macro.lua.

Lua variable

Syntax: @[{ variable }] Puts the value of the variable in the code

Quoted shell variables

Syntax: $(var) Puts the value of the variable in the code, quoted.

Unquoted shell variables

Syntax: $[{var}] Puts the value of the variable in the code, not quoted.

Shell output

Syntax: $[[code]] Puts the stdout of the script in the code. Note that you can't set variables from the shell script.

Debugging

Generator code

To output the code the generator executes, add the --generator-code flag.

Debug messages

To output debug messages, add the --verbose flag.