Awesome
zinit-annex-readurl<a name="zinit-annex-readurl"></a>
<!-- mdformat-toc start --slug=github --maxlevel=6 --minlevel=2 -->- Usage
- Intermediate Download Page
- Skipping
dlink''
Ice - Sorting matched URLs/versions
- Filtering The Matched URLs
- Examples
Usage<a name="usage"></a>
Load as a regular plugin via:
zinit light zdharma-continuum/z-a-readurl
After executing the above command (possibly via zshrc
), it's then possible to use the dlink''
and dlink0''
ices
and the special as'readurl|…'
value of the as''
ice.
This Zinit extension allows to automatically download the newest version of a file to which the URL is hosted on a webpage.
The annex provides:
- Two new ices:
dlink''
anddlink0''
. - A handling of the special values of the
as''
ice, i.e.: ofas'readurl'
,as'readurl|command'
, etc.
Note: The annex works only with snippets, not plugins.
It works as follows:
- invoke
snippet
(or pass thehttp://…
address using thefor
syntax) on the web-page that hosts the URL to the file to download, - provide
dlink''
ice with the expected file-download URL, replacing the version with the%VERSION%
keyword, - also, provide
as''
ice with one of the following values:readurl
,readurl|command
,readurl|completion
,readurl|null
; the part after the|
has the same meaning as in the normalas''
ice.
So, for example:
zinit for \
as'readurl|command' \
dlink'/junegunn/fzf-bin/releases/download/%VERSION%/fzf-%VERSION%-linux_amd64.tgz'
extract \
id-as'fzf'
https://github.com/junegunn/fzf-bin/releases/
The snippet is just an example. The same effect is obtained by loading as junegunn/fzf-bin
plugin with from'gh-r'
ice.
As demonstrated, the dlink''
can be a relative or an absolute path and also a full URL (i.e.: beginning with the
http://…
prefix).
Intermediate Download Page<a name="intermediate-download-page"></a>
Sometimes, like in the case of the terraform command, the download link isn't
on the download page but on a page listed on it. In such cases utilize the dlink0''
ice and provide the pattern for
the additional, intermediate download page. For For example, in the case of terraform
, the Zinit command is:
zinit for \
as'readurl|command' \
dlink0'/terraform/%VERSION%/' \
dlink'/terraform/%VERSION%/terraform_%VERSION%_linux_386.zip' \
extract \
id-as'terraform' \
http://releases.hashicorp.com/terraform/
Skipping dlink''
Ice<a name="skipping-dlink-ice"></a>
Sometimes the URL of the download page differs from the URL of the archive in just a few /
-sections. In such a case,
it is possible to skip the dlink''
ice by appending a ++
-separated fragment of the archive URL, like so:
zinit for \
as'readurl|command' \
extract \
http://domain.com/download-page++/archive.zip
If the archive URL has some different /
-sections, then it's possible to strip the conflicting ones from the download
URL by using +++
, ++++
, etc. – the number of the /
-section that'll be stripped equals the number of the +
minus
2. So, for example:
zinit for \
as'readurl|command' \
extract \
http://domain.com/download-page/removed-section+++/archive.zip
Sorting matched URLs/versions<a name="sorting-matched-urlsversions"></a>
Sometimes the download page doesn't list the package versions from newest to the oldest, but in some other order. In
such case, it's possible to sort the URLs / package versions by prepending the chosen dlink
ice (dlink0''
or
dlink''
) with the exclamation mark (dlink'!…'
, etc.). See the next section for an example:
Filtering The Matched URLs<a name="filtering-the-matched-urls"></a>
Sometimes some unwanted URLs match the dlink''
/dlink0''
regex/pattern. In such case it's possible to filter them out
by appending a filtering regex to the dlink''
ice as: dlink='the-main-regex~%the-unwanted-URLs-regex%'
(or the same
for dlink0''
). An example package that can benefit from this is the Open Shift client,
which doesn't sort the URLs from latest to the oldest – hence the exclamation mark (!
) prepend – and it has special
URLs like stable-4.4
or candidate-4.5
together with the regular version URLs (like 4.5.0-rc.1
):
zinit for \
as'readurl|command' \
dlink'openshift-client-windows-%VERSION%.zip' \
dlink0'!%VERSION%~%(stable|latest|fast|candidate).*%' \
id-as'ocp' \
https://mirror.openshift.com/pub/openshift-v4/clients/ocp/
The above snippet of Zsh code / Zinit invocation will sort the URLs (dlink0'!…'
) and then filter out the special ones
from the results (via …~%(stable|latest|fast|candidate).*%
), this way selecting the latest version of the Open Shift
client.
Examples<a name="examples"></a>
Pulumi, a tool to create, deploy, and manage modern cloud software.
zi for \
as'readurl|null' \
dlink'https://get.pulumi.com/releases/sdk/pulumi-%VERSION%-linux-x64.tar.gz' \
extract'!' \
id-as'pulumi' \
sbin'pulumi*' \
https://www.pulumi.com/docs/get-started/install/versions/