Show HN: A command-line utility-belt for hacking JSON and Javascript

https://github.com/ddopson/underscore-cli?ref=hn

by RealCasually • 14 years ago

68 21 14 years ago

github.com

RealCasually3• 14 years ago

I found this super useful:

cat data.json | underscore print --color

Gives you a well-formatted, color coded output for your JSON data. That is just one of the many things it can do.

isaachawley• 14 years ago

cat data.json | python -mjson.tool

Everything but the color.

antihero• 14 years ago

cat data.json | json_reformat

Seeing as lots of systems have yajl.

tomjakubowski• 14 years ago

underscore print --color < data.json

ashayh• 14 years ago

$ zsh_prompt> alias clijson="ruby -e 'require \"rubygems\";require \"json\"; require \"ap\"; j = JSON.parse(STDIN.gets); ap j'"

command_that_emits_json | clijson

ojiikun• 14 years ago

Very nice! I've wanted something like this for as long as I've been a RecordStream (https://github.com/benbernard/RecordStream) fanatic.

ddopson• 14 years ago

Thanks! I put this tool together to tackle a bunch of common tasks I had - groveling through large JSON responses from webservices, using templates to generate documents based on structured config data, etc. I'm really happy that other people are finding it useful too. If you have any feature requests, post them!!!

petercooper• 14 years ago

What's the ?ref=hn in the URL about? I'm intrigued if there's some way to track this sort of thing at GitHub. Or was it just to get around its two previous posts? ;-) (Not that I can blame you for that, gotta keep trying.)

nivla• 14 years ago

I might be wrong but I don't think you can access your Github repo's analytics. The only reason I can think off other than the one you mentioned is that if the link gets reposted to forums/blogs, he knows the source of it as HN.

iopuy2• 14 years ago

The name of the tool is "underscore" in case you don't feel like clicking the link.

RealCasually3• 14 years ago

Actually, its 'underscore_cli'.

iopuy2• 14 years ago

Actually, its "underscore-CLI".

ville• 14 years ago

This is not related to underscore.js anyhow? People might find that name confusing.

johnleppings• 14 years ago

Did you read the fucking article? The application began as a simple CLI for executing JS, and had underscore as its standard library. So it was a CLI for underscore. Then they made it JSON focused.

keenerd• 14 years ago

> Try doing THAT with any other CLI one-liner!

Challenge accepted.

    cat earthporn.json | \
    jshon -e data -e children -a -e data -e title -u | \
    sed -r 's/\<./\U&/g' | tr -d ' ' | sed 's/[^a-zA-Z].*//g`

I'll stick with Jshon for my routers and other little ARM devices.

But this utility is pretty nifty. Personally the whole select thing feels a little too magic for my taste, but when it works it looks quite compact. I'll probably be borrowing that colorizing feature tomorrow. And thanks for the link at the bottom :-)

ralph• 14 years ago

Nice to see tr getting some use, though given the sed on either side I wonder if

    sed -r 's/\<./\U&/g; s/ +//g; s/[^a-zA-Z].*//'

would be better. Note, the last s/// doesn't need a g.

foxwoods• 14 years ago

To inspect JSON in command-line, I prefer jsontool[1], it's more intuitive.

    something-generating-JSON-on-stdout | json [OPTIONS] [LOOKUPS]

[1] http://trentm.com/json/

smagch• 14 years ago

Yeah, I use jsontool too. I always do on the terminal

    cat hoge.json | json | less

kanzure• 14 years ago

Does anyone have a javascript deobfuscation tool that will autorename variables in different scopes? I love working with javascript through the shell, but js-beautify doesn't always cut it.

yoduh• 14 years ago

The author says: "Or it can form the backbone of a rich, full-powered Javascript command-line, inspired by "perl -pe", and doing for structured data what sed, awk, and grep do for text."

But... "structured data", at least in his examples (and nearly all the JSON I see on the web), is... text. Does his perl script handle binary json?

The author says: "Try doing THAT with any other CLI one-liner!"

Indeed I will, since I do not know perl. Should I learn it?

The folllowing seems to work, but I only tested it on the author's earthporn.json example

1. compile CamelCase filter called yycamel

2. compose throwaway sed oneliner to massage the text

3. pipe through unicode to ascii filter (not included)

4. pipe through yycamel

(I really do not like CamelCase, but whatever.)

   cat > camel.l << eof
   %%
   [ ][A-Za-z]  printf("%c",toupper(yytext[1]));
   eof

   flex -iCfa camel.l
   cc lex.yy.c -static -ll -o yycamel

   sed 's/\"title\": /\
   /g;' earthporn.json |sed 's/[[(]/\ 
   /g;' | sed '/^\"[a-zA-Z]/!d;s/[^a-zA-Z]/ /g;s/  */ /g' |yycamel

Show HN: A command-line utility-belt for hacking JSON and Javascript

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