A command-line utility to pretty print structures encoded using Erlang's External Term Format. The input is read from stdin or a file and written to stdout, making ppbert a good candidate for shell pipelines.
At the moment, ppbert supports the following subset of the External Term Format:
``` $ ppbert --help ppbert 0.9.0
Options: -V, --version display version -h, --help display this help -i, --indent NUM indent with NUM spaces -m, --per-line NUM print at most NUM basic terms per line -p, --parse parse only, not pretty print -2, --bert2 parse .bert2 files -d, --disk-log parse disk_log files -v, --verbose show diagnostics on stderr -j, --json print as JSON -t, --transform-proplists convert proplists to JSON objects
$ ppbert mini_dict.bert [ {host, "localhost"}, {port, 80}, { headers, [ { <<"X-Real-Ip">>, {127, 0, 0, 1} }, {<<"Keep-alive">>, true} ] } ]
$ printf "\x83\x77\x04atom" | ppbert atom ```
Ppbert is written in Rust and offers an appreciable performance gain
over using Erlang's erlang:binary_to_term/1 and io:format/2.
```sh $ cat erl_ppbert
main(Args) -> lists:foreach(fun (Filename) -> {ok, Binary} = file:readfile(Filename), io:format("~p~n", [binaryto_term(Binary)]) end, Args).
$ du large.bert 96M large.bert
$ time ./erl_ppbert large.bert >/dev/null
real 0m43.017s user 0m38.846s sys 0m4.345s
$ time ppbert large.bert >/dev/null
real 0m1.802s user 0m1.251s sys 0m0.549s ```