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zimfw/tools/modules.zsh
Eric Nielsen 4c14cb0f73 Add a plugin mechanism \o/
This is a major change, where Zsh modules/plugins are not git submodules
in the Zim repo anymore, but customized and installed separately as
individual repositories. The discussion about this started more than 2
years ago in #88. Closes #299.

This will allow contributors' modules to live in their own repositories.
Closes #33, closes #138, closes #262, closes #277, closes #281.

Some discussion topics that I think are worth considering before merging
this:
- [ ] Reduce the Zim "core" to a single file?
- [ ] Simplify installation? With an installation script? (See #182)
- [ ] Put the configuration into `.zshrc` instead of a separate `.zimrc`?
  (See #288)
- [ ] Rerun the Eriner/zsh-framework-benchmark?

I suggest we create individual GitHub issues/PRs to start the separate
discussions.

The current code has what, up to this point, I considered to be the best
balance between simplicity, execution speed and number of files.

One measured decision was to make the initialization of modules depend
only on the `':zim' modules` style, keeping it as fast as possible.
The `':zim:module' module` style is used to install, update and clean
the modules, all operations that happen after the user got his
as-blazing-fast-possible shell prompt.

Even though I didn't care much about making install or update fast,
`xargs` has a nice feature of allowing commands to be executed in
parallel with `-P`. I took advantage of that.

I've also worked on making the `zimfw` utility give the user some nice
(while still minimalistic) output. Also I'm suggesting this as the new
name for the `zmanage` tool, since `zimfw` does not shadow the `zim`
wiki tool.

I strongly recommend you install this from scratch in a separate
directory, instead of checking out `develop` in your current Zim
installation repo.
2019-01-07 18:25:34 -05:00

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local zmodule zurl ztype zrev
local -a zmodules
local -A zoptions
zstyle -a ':zim' modules 'zmodules'
for zmodule in ${zmodules}; do
zstyle -a ':zim:module' ${zmodule} 'zoptions'
[[ ${zoptions[frozen]} == yes ]] && continue
zurl=${zoptions[url]:-${zmodule}}
if [[ ${zurl} != /* && ${zurl} != *@*:* ]]; then
# Count number of slashes
case ${#zurl//[^\/]/} in
0) zurl="https://github.com/zimfw/${zurl}.git" ;;
1) zurl="https://github.com/${zurl}.git" ;;
esac
fi
if [[ -n ${zoptions[tag]} ]]; then
ztype=tag
zrev=${zoptions[tag]}
else
ztype=branch
zrev=${zoptions[branch]:-master}
fi
# Cannot have an empty space at the EOL because this is read by xargs -L1
print "${zurl} ${ZIM_HOME}/modules/${zmodule} ${ztype} ${zrev}${1:+ ${1}}"
done