Adding support to json

[luizperes]

This PR adds support to json as per #27

I also created a flag -json // not sure if it is the best name for the flag

In this way:

• git ql "select author,hash from commits" returns the classic table as its output.
• git ql -json "select author,hash from commits" returns a json as its output.

Please check the image below:

[filhodanuvem]

Awesome job @luizperes !!
Really thanks for contribute so fast!

I'm thinking in two points (not blockers to merge this):

• It would be important test in some way this change ? I look for my runtime_test file and it is bad :(
• Maybe return values as a single csv file (ok, I confess, I am a csv lover) would be also useful. What do you think? From this we could change the flag -json to -output=json in another PR.

[vigo]

Great idea! 👍

[pchaganti]

👍

[luizperes]

You are completely right, @cloudson, I will include that to your runtime_test!

Regarding the json output flags and the possibility to have more flags for output, I also think that it's awesome. Will fix it soon

[KyleAMathews]

Brilliant!

[luizperes]

Hi @cloudson , I am only concerning about the flag name --output=json, shouldn't it be like --type=json or something? The flag -o and --output=<var> are often used to indicate the output filename in other CLI. What do you think about --type=<output_type>? Do you have any other suggestion?

Thanks

[filhodanuvem]

Hey!
--type looks nice for me!

[luizperes]

Hi @cloudson , please check it again! I implemented the --type flag and implemented the test. It turns out that we will need to test the whole process of parsing, because the json is already the output... Thank you.

[filhodanuvem]

Perfect @luizperes . Is on develop.
I will work to make a new release soon.

[luizperes]

It sounds good! Thanks! I will also try to add new features later, such as the csv

[jhirbour]

I'd love a way to pump data from git to MySQL/PGSQL to make some info graphics about my teams git history. CSV would work @luizperes but it might also be cool to have a SQL mode. Or a way to import from git into a RDBMS.

[luizperes]

Thanks for the hint @jhirbour... we have already a similar discussion here #39..