-- The getopt-functionality is loaded from pm3/getopt.lua
-- Have a look there for further details
getopt = require('getopt')
bin = require('bin')
dumplib = require('html_dumplib')

example = "script run emul2html -o dumpdata.eml "
author = "Martin Holst Swende"
usage = "script run htmldump [-i <file>] [-o <file>]"
desc =[[
This script takes a dumpfile on EML (ASCII) format and produces a html based dump, which is a
bit more easily analyzed.

Arguments:
    -h              This help
    -i <file>       Specifies the dump-file (input). If omitted, 'dumpdata.eml' is used
    -o <filename>   Speciies the output file. If omitted, <curdate>.html is used.

]]

-------------------------------
-- Some utilities
-------------------------------

---
-- A debug printout-function
function dbg(args)
    if DEBUG then
        print("###", args)
    end
end
---
-- This is only meant to be used when errors occur
function oops(err)
    print("ERROR: ",err)
end


---
-- Usage help
function help()
    print(desc)
    print("Example usage")
    print(example)
end

local function main(args)

    local input = "dumpdata.eml"
    local output = os.date("%Y-%m-%d_%H%M%S.html");
    for o, a in getopt.getopt(args, 'i:o:h') do
        if o == "h" then return help() end
        if o == "i" then input = a end
        if o == "o" then output = a end
    end
    local filename, err = dumplib.convert_eml_to_html(input,output)
    if err then return oops(err) end

    print(("Wrote a HTML dump to the file %s"):format(filename))
end

--[[
In the future, we may implement so that scripts are invoked directly
into a 'main' function, instead of being executed blindly. For future
compatibility, I have done so, but I invoke my main from here.
--]]
main(args)