Write Glyphicons to _data, generate Glyphicons markup

[ssorallen]

This generates a glyphicons.yml file from the glyphicons.less source,
and then components.html uses that data to generate the Glyphicons docs
by iterating through the data. The _data directory was introduced in
Jekyll 1.3.0, and GitHub Pages is already on [version 1.4.2][1].

Fixes #11862.

[1] https://github.com/github/pages-gem/blob/master/github-pages.gemspec#L16

[cvrebert]

Could you parse it from /fonts/glyphicons-halflings-regular.svg instead? That's the primary source. glyphicons.less itself was mostly semi-automatically generated.

[ssorallen]

Aha, I didn't realize that. I will update to use the SVG.

[ssorallen]

@cvrebert, the SVG doesn't contain the class names, which is what this page needs. Were those added to glyphicons.less by hand?

[cvrebert]

Actually, they were parsed from http://glyphicons.com , with some manual editing because Bootstrap changes a handful of the names. I guess the LESS approach will have to do.

[mdo]

Bootstrap changes a handful of the names

We do?

[cvrebert]

Bootstrap changes a handful of the names

We do?

Yup:

Glyphicons Name	Bootstrap Name
comments	comment
collapse	collapse-down
collapse-top	collapse-up
circle-arrow-top	circle-arrow-up
hand-top	hand-up

And then there are a bunch where we merely replace underscores with dashes:

Glyphicons Name	Bootstrap Name
cloud_download	cloud-download
copyright_mark	copyright-mark
cloud_upload	cloud-upload
credit_card	credit-card
floppy_disk	floppy-disk
floppy_open	floppy-open
floppy_remove	floppy-remove
floppy_save	floppy-save
floppy_saved	floppy-saved
hd_video	hd-video
log_in	log-in
log_out	log-out
new_window	new-window
phone_alt	phone-alt
registration_mark	registration-mark
sd_video	sd-video
sound_5_1	sound-5-1
sound_6_1	sound-6-1
sound_7_1	sound-7-1
sound_dolby	sound-dolby
sound_stereo	sound-stereo
tree_conifer	tree-conifer
tree_deciduous	tree-deciduous

[mdo]

Ah, this was probably a legacy thing honestly. We had written CSS for them before they were icon fonts. As for underscores, fuck those 😁.

[mdo]

Thanks, @ssorallen!