Extract licenses of installed LuaRocks modules to CSV

luarocks-licenses.awk

#!/bin/awk -f

BEGIN {
    while ("luarocks list --porcelain" | getline) {
        i = 0
        name = ""
        license = ""
        homepage = ""
        c = "luarocks show " $1
        while (c | getline) {
            if (++i == 2) {
                name = $1
            } else if ($0 ~ /^License/) {
                license = $2
            } else if ($0 ~ /^Homepage/) {
                homepage = $2
            }
        }

        printf "%s,%s,%s\n", name, license, homepage
    }
}

usage.sh

$ ./luarocks-licenses.awk 
ansicolors,MIT,https://github.com/kikito/ansicolors.lua
busted,MIT,http://olivinelabs.com/busted/
date,MIT,https://github.com/Tieske/date
dkjson,MIT/X11,http://dkolf.de/src/dkjson-lua.fsl/
etlua,MIT,https://github.com/leafo/etlua
inspect,MIT,https://github.com/kikito/inspect.lua
lapis,MIT,http://leafo.net/lapis
loadkit,MIT,https://github.com/leafo/loadkit
LPeg,MIT/X11,http://www.inf.puc-rio.br/~roberto/lpeg.html
lua-cjson,MIT,http://www.kyne.com.au/~mark/software/lua-cjson.php
lua-term,MIT/X11,https://github.com/hoelzro/lua-term
lua_cliargs,MIT,https://github.com/amireh/lua_cliargs
LuaFileSystem,MIT/X11,
luaossl,MIT/X11,http://25thandclement.com/~william/projects/luaossl.html
LuaRocks,MIT/X11,http://www.luarocks.org
LuaSocket,MIT,http://luaforge.net/projects/luasocket/
luassert,MIT,http://olivinelabs.com/busted/
luasystem,MIT,http://olivinelabs.com/luasystem/
mediator_lua,MIT,http://olivinelabs.com/mediator_lua/
mimetypes,MIT/X11,https://bitbucket.org/leafstorm/lua-mimetypes/
penlight,MIT/X11,http://stevedonovan.github.com/Penlight
pgmoon,MIT,https://github.com/leafo/pgmoon
say,MIT,http://olivinelabs.com/busted/