JSON_XS(1) User Contributed Perl Documentation JSON_XS(1)NAME
json_xs - JSON::XS commandline utility
SYNOPSIS
json_xs [-v] [-f inputformat] [-t outputformat]
DESCRIPTION
json_xs converts between some input and output formats (one of them is
JSON).
The default input format is "json" and the default output format is
"json-pretty".
OPTIONS-v Be slightly more verbose.
-f fromformat
Read a file in the given format from STDIN.
"fromformat" can be one of:
json - a json text encoded, either utf-8, utf16-be/le, utf32-be/le
storable - a Storable frozen value
storable-file - a Storable file (Storable has two incompatible
formats)
bencode - use Convert::Bencode, if available (used by torrent
files, among others)
clzf - Compress::LZF format (requires that module to be installed)
eval - evaluate the given code as (non-utf-8) Perl, basically the
reverse of "-t dump"
yaml - YAML (avoid at all costs, requires the YAML module :)
string - do not attempt to decode te file data
none - nothing is read, creates an "undef" scalar - mainly useful
with "-e"
-t toformat
Write the file in the given format to STDOUT.
"toformat" can be one of:
json, json-utf-8 - json, utf-8 encoded
json-pretty - as above, but pretty-printed
json-utf-16le, json-utf-16be - little endian/big endian utf-16
json-utf-32le, json-utf-32be - little endian/big endian utf-32
storable - a Storable frozen value in network format
storable-file - a Storable file in network format (Storable has two
incompatible formats)
bencode - use Convert::Bencode, if available (used by torrent
files, among others)
clzf - Compress::LZF format
yaml - YAML
dump - Data::Dump
dumper - Data::Dumper
string - writes the data out as if it were a string
none - nothing gets written, mainly useful together with "-e"
Note that Data::Dumper doesn't handle self-referential data
structures correctly - use "dump" instead.
-e code
Evaluate perl code after reading the data and before writing it out
again - can be used to filter, create or extract data. The data
that has been written is in $_, and whatever is in there is written
out afterwards.
EXAMPLES
json_xs -t none <isitreally.json
"JSON Lint" - tries to parse the file isitreally.json as JSON - if it
is valid JSON, the command outputs nothing, otherwise it will print an
error message and exit with non-zero exit status.
<src.json json_xs >pretty.json
Prettify the JSON file src.json to dst.json.
json_xs -f storable-file <file
Read the serialised Storable file file and print a human-readable JSON
version of it to STDOUT.
json_xs -f storable-file -t yaml <file
Same as above, but write YAML instead (not using JSON at all :)
json_xs -f none -e '$_ = [1, 2, 3]'
Dump the perl array as UTF-8 encoded JSON text.
<torrentfile json_xs -f bencode -e '$_ = join "\n", map @$_, @{$_->{"announce-list"}}' -t string
Print the tracker list inside a torrent file.
lwp-request http://cpantesters.perl.org/show/JSON-XS.json | json_xs
Fetch the cpan-testers result summary "JSON::XS" and pretty-print it.
AUTHOR
Copyright (C) 2008 Marc Lehmann <json@schmorp.de>
perl v5.18.1 2011-11-07 JSON_XS(1)
