Feat/text alignment

[cowile]

Hello,

I attended the DFW Elixir Hack Night on 08/20 hosted by some of the codedge team. It was my first introduction to Elixir, but I liked what I saw and read most of the getting started guide later that night.

As thanks for hosting the event, I wanted to contribute something, so I have implemented cell-level text alignment for your pretty-printed tables. It uses a global format_opt currently. A more advanced feature could change alignment based on the type of data to cover a common convention of left-aligned text and right-aligned numbers, but I have other things on my plate considering offers to change jobs.

[hpopp]

Thanks for this! Cell alignment has been on my roadmap, so this is a great first step.

I noticed a bug with center alignment. I suspect it's probably rounding errors with integer division.

iex(2)> Scribe.print(data, alignment: :center)
+---------------+---------------------------------------+------------------+--------+-------------------+
|  :__struct__  |                :email                |   :first_name   |  :id  |    :last_name    |
+---------------+---------------------------------------+------------------+--------+-------------------+
|     User     |       "kasandra2089@spinka.com"       |   "Henriette"   |  4776  |    "Mitchell"    |
|     User     |      "adolfo.moore@treutel.info"      |     "Treva"     |  1497  |     "Ziemann"     |
|     User     |        "frances2011@wolf.org"        |    "Giovanny"    |  1629  |     "Rolfson"     |
|     User     |       "karine1937@douglas.com"       |     "Baron"     |  9890  |    "Powlowski"    |
|     User     |        "arturo2038@johns.info"        |     "Ryder"     |  5487  |    "Gottlieb"    |
|     User     |      "fletcher1910@wunsch.info"      |     "Lukas"     |  1610  |    "Gleichner"    |
|     User     |      "tania.stanton@mueller.biz"      |      "Faye"      |  9632  |      "Huels"      |
|     User     |      "ollie_krajcik@pfeffer.com"      |     "Angel"     |  7773  |       "Von"       |
|     User     |         "brenda2055@kuhn.com"         |     "Roman"     |  3920  |     "Steuber"     |
|     User     |        "cierra1995@blick.info"        |     "Leslie"     |  8423  |     "Wiegand"     |
|     User     |     "dewayne_schaden@hermann.org"     |   "Gabrielle"   |  2252  |      "Yost"      |
|     User     |     "mekhi_keeling@mueller.info"     |     "Blanca"     |  8764  |      "Stehr"      |
|     User     |     "maximilian1939@fritsch.net"     |     "Alysa"     |  3150  |     "Dibbert"     |

[cowile]

You are correct. More specifically, integer division of an odd number of padding spaces will lose one space. This commit should fix by calculating any remainder spaces needed.