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🌀 Bin Gem Node

An annex provides the following functionality:

  1. Run programs and scripts without adding anything to $PATH,
  2. Install: Ruby Gems, Node, and Python modules, with automatically set:
  3. Run programs, scripts, and functions with automatic cd into the plugin or snippet directory, plus also with automatic standard output & standard error redirecting.
  4. Source scripts through an automatically created function with the above $GEM_HOME, $NODE_PATH, $VIRTUALENV, and cd features available,
  5. Create the so-called shims known from rbenv – the same feature as the first item of this enumeration – of running a program without adding anything to $PATH with all of the above features, however through an automatic script created in $ZPFX/bin, not a function (the first item uses a function-based mechanism),
  6. Automatic updates of Ruby gems and Node modules during regular plugin and snippet updates with zi update ….

The sbin ice-modifier that creates forwarder-scripts instead of forwarder-functions created by the fbin ice-modifier turned out to be the proper, best method for exposing binary programs and scripts. This way there is no need to add anything to $PATH – z-a-bin-gem-node will automatically create a function that will wrap the binary and provide it on the command line as if it was being placed in the $PATH.

As previously mentioned, the function can automatically export $GEM_HOME, $NODE_PATH, $VIRTUALENV shell variables and also automatically cd into the plugin or snippet directory right before executing the binary and then cd back to the original directory after the execution is finished. As previously mentioned, instead of the function an automatically created script – the so-called shim – can be used for the same purpose and with the same functionality, so that the command is accessible practically fully normally – not only in the live Zsh session, only within which the functions created by fbin exist, but also from any Zsh script.

Suppose that we want to install the junegunn/fzf plugin from GitHub Releases, which contains only a single file – the fzf binary for the selected architecture. It is possible to do it in the standard way – by adding the plugin's directory to the $PATH.

zi ice as'program' from'gh-r'
zi load junegunn/fzf

After this command, the $PATH variable will contain e.g.:

print $PATH
/home/sall/.zi/plugins/junegunn---fzf:/bin:/usr/bin:/usr/sbin:/sbin

For many such programs loaded as plugins, the PATH can become quite cluttered. I've had 26 entries before switching to z-a-bin-gem-node. To solve this, load with the use of sbin ice-modifier provided and handled by z-a-bin-gem-node:

zi ice as'program' from'gh-r' sbin'fzf'
zi load junegunn/fzf

The $PATH will remain unchanged and a forwarder-script of fzf shim will be created in $ZPFX/bin (~/.zi/polaris/bin by default), which is being already added to the $PATH by Zi when it is being sourced:

cat $ZPFX/bin/fzf
#!/usr/bin/env zsh

function fzf {
  local bindir="/home/sall/.zi/plugins/junegunn---fzf"
  "$bindir"/"fzf" "$@"
}

fzf "$@"

Running the script will forward the call to the program accessed through an embedded path to it. Thus, no $PATH changes are needed.

Ice modifierDescription
sbinCreates shims for binaries and scripts.
fbinCreates functions for binaries and scripts.
gemInstalls and updates gems + creates functions for gems binaries.
nodeInstalls and updates node_modules + creates functions for binaries of the modules.
pipInstalls and updates python packages into a virtualenv + creates functions for binaries of the packages.
fmodCreates wrapping functions for other functions.
fsrcCreates functions that source given scripts.
fercThe same as fsrc, but using an alternate script-loading method.

Function wrappers for binaries, scripts, gems, node_modules, python packages, etc:

FlagDescription
gSet $GEM_HOME variable to {plugin-dir}.
nSet $NODE_PATH variable to {plugin-dir}/node_modules.
pSet $VIRTUALENV variable to {plugin-dir}/venv.
ccd to the plugin's directory before running the program and then cd back after it has been run.
NAppend &>/dev/null to the call of the binary, i.e. redirect both standard output and standard error to /dev/null.
EAppend 2>/dev/null to the call of the binary, i.e. redirect standard error to /dev/null.
OAppend >/dev/null to the call of the binary, i.e. redirect standard output to /dev/null.

View all currently registered:

  • ice-modifiers: zi icemods
  • subcommand: zi subcmds

SBIN'…'​

sbin'[{g|n|c|N|E|O}:]{path-to-binary}[ -> {name-of-the-script}]; …'

Creates the so-called shim known from rbenv – a wrapper script that forwards the call to the actual binary. The script is created always under the same, standard, and single $PATH entry: $ZPFX/bin (which is ~/.zi/polaris/bin by default). The flags have the same meaning as with fbin'…' ice.

zi ice as'program' from'gh-r' sbin'fzf'
zi load junegunn/fzf
cat $ZPFX/bin/fzf
#!/usr/bin/env zsh

function fzf {
  local bindir="/home/sall/.zi/plugins/junegunn---fzf"
  local -xU PATH="$bindir":"$PATH"
  "$bindir"/"fzf" "$@"
}

fzf "$@"
备注
  • as'program' (an alias: as'command') - used for the plugin to be added to $PATH when a plugin is not a file for sourcing.

The sbin ice-modifier can be empty, it will then try to create the shim for the trailing component of the id-as ice, e.g.:

  • id_as'exts/git-my' → it'll check if a file git-my exists and if yes, will create the function git-my.
  • paulirish/git-open → it'll check if a file git-open exists and if yes, will create the function git-open.

The same trailing component would be set for the snippet URL, for any alphabetically first and executable file.

FBIN'…'​

fbin'[{g|n|c|N|E|O}:]{path-to-binary}[ -> {name-of-the-function}]; …'

Creates a wrapper function of the name the same as the last segment of the path or as {name-of-the-function}.

zi ice from"gh-r" fbin"g:fzf -> myfzf" nocompile
zi load junegunn/fzf
which myfzf
myfzf () {
  local bindir="/home/sall/.zi/plugins/junegunn---fzf"
  local -x GEM_HOME="/home/sall/.zi/plugins/junegunn---fzf"
  local -xU PATH="/home/sall/.zi/plugins/junegunn---fzf"/bin:"$bindir":"$PATH"
  "$bindir"/"fzf" "$@"
}
备注
  • nocompile ice-modifier is used to skip file compilation when it is not required.

GEM'…'​

gem'{gem-name}; …'
gem'[{path-to-binary} <-] !{gem-name} [-> {name-of-the-function}]; …'

Installs the gem of name {gem-name} with $GEM_HOME set to the plugin's or snippet's directory. In other words, the gem and its dependencies will be installed locally in that directory. In the second form, it also creates a wrapper function identical to the one created with fbin'…' ice.

zi ice gem'!asciidoctor' id-as'asciidoctor' nocompile
zi load z-shell/0
which asciidoctor
asciidoctor () {
  local bindir="/home/sall/.zi/plugins/asciidoctor/bin"
  local -x GEM_HOME="/home/sall/.zi/plugins/asciidoctor"
  local -xU PATH="/home/sall/.zi/plugins/asciidoctor"/bin:"$bindir":"$PATH"
  "$bindir"/"asciidoctor" "$@"
}
备注
  • z-shell/0 - an empty repository to aid Zi's hooks, in this case, used to store the asciidoctor gem.
  • id-as'asciidoctor' - used to assign a name instead of the z-shell/0.
  • nocompile - used to skip file compilation when it is not required.

NODE'…'​

node'{node-module}; …'
node'[{path-to-binary} <-] !{node-module} [-> {name-of-the-function}]; …'

Installs the node module of name {node-module} inside the plugin's or snippet's directory. In the second form, it also creates a wrapper function identical to the one created with fbin'…' ice.

zi ice node'remark <- !remark-cli -> remark; remark-man' id-as'remark' nocompile
zi load z-shell/0
which remark
remark () {
  local bindir="/home/sall/.zi/plugins/remark/node_modules/.bin"
  local -x NODE_PATH="/home/sall/.zi/plugins/remark"/node_modules
  local -xU PATH="/home/sall/.zi/plugins/remark"/node_modules/.bin:"$bindir":"$PATH"
  "$bindir"/"remark" "$@"
}

In this case, the name of the binary program provided by the node module is different from its name, hence the second form with the b <- a -> c syntax has been used.

备注
  • z-shell/0 - an empty repository to aid Zi's hooks, in this case, used to store the remark Node module.
  • id-as'remark' - used to assign a name instead of the z-shell/0.
  • nocompile - used to skip file compilation when it is not required.

PIP'…'​

pip'{pip-package}; …'
pip'[{path-to-binary} <-] !{pip-package} [-> {name-of-the-function}]; …'

Installs the node module of name {pip-package} inside the plugin's or snippet's directory. In the second form, it also creates a wrapper function identical to the one created with fbin'…' ice.

zi ice pip'youtube-dl <- !youtube-dl -> youtube-dl' id-as'youtube-dl' nocompile
zi load z-shell/0
which youtube-dl
youtube-dl () {
  local bindir="/home/sall/.zi/plugins/youtube-dl/venv/bin"
  local -x VIRTUALENV="/home/sall/.zi/plugins/youtube-dl"/venv
  local -xU PATH="/home/sall/.zi/plugins/youtube-dl"/venv/bin:"$bindir":"$PATH"
  "$bindir"/"youtube-dl" "$@"
}
备注
  • z-shell/0 - an empty repository to aid Zi's hooks, in this case, used to store the youtube-dl pip package.
  • id-as'youtube-dl' - used to assign a name instead of the z-shell/0.
  • nocompile - used to skip file compilation when it is not required.

FMOD'…'​

fmod'[{g|n|c|N|E|O}:]{function-name}; …'
fmod'[{g|n|c|N|E|O}:]{function-name} -> {wrapping-function-name}; …'

It wraps the given function with the ability to set $GEM_HOME, etc. – the meaning of the g, n, and c flags is the same as in the fbin'…' ice.

Example:

myfunc() { pwd; ls -1 }; zi ice fmod'cgn:myfunc' id-as'myfunc' nocompile
zi load z-shell/0
which myfunc
myfunc () {
  local -x GEM_HOME="/home/sall/.zi/plugins/myfunc"
  local -x NODE_PATH="/home/sall/.zi/plugins/myfunc"/node_modules
  local oldpwd="/home/sall"
  () {
    setopt local_options no_auto_pushd
    builtin cd -q "/home/sall/.zi/plugins/myfunc"
  }
  "myfunc--za-bgn-orig" "$@"
  () {
    builtin setopt local_options no_auto_pushd
    builtin cd -q "$oldpwd"
  }
}
myfun
/home/sall/.zi/plugins/z-shell---0
docs/
LICENSE
README.md
备注
  • z-shell/0 - an empty repository to aid Zi's hooks, in this case, used to store the myfunc function files.
  • id-as'myfunc' - used to assign a name instead of the z-shell/0.
  • nocompile - used to skip file compilation when it is not required.

FSRC'…'​

fsrc'[{g|n|c|N|E|O}:]{path-to-script}[ -> {name-of-the-function}]; …'

FERC'…'​

ferc'[{g|n|c|N|E|O}:]{path-to-script}[ -> {name-of-the-function}]; …'

Creates a wrapper function that at each invocation sources the given file. The second ice, FERC'…' works the same with the single difference that it uses eval "$(<{path-to-script})" instead of source "{path-to-script}" to load the script.

zi ice fsrc"myscript -> myfunc" ferc"myscript" nocompile
zi load z-shell/0
which myfunc
myfunc () {
  local bindir="/home/sall/.zi/plugins/z-shell---0"
  local -xU PATH="$bindir":"$PATH"
  () {
    source "$bindir"/"myscript"
  } "$@"
}
which myscript
myscript () {
  local bindir="/home/sall/.zi/plugins/z-shell---0"
  local -xU PATH="$bindir":"$PATH"
  () {
    eval "$(<"$bindir"/"myscript")"
  } "$@"
}
备注
  • nocompile ice-modifier is used to skip file compilation when it is not required.

The ices can be empty as the trailing component will be assigned with id-as ice-modifier the same way as described in the sbin.

shim-list​

An annex provides a subcommand – shim-list for shims currently stored in $ZPFX/bin management:

Available flags are:

zi shim-list [ -t | -i | -o | -s | -h ]
FlagDescription
-t --this-dirInstructs Zi to look for shims in the current directory instead of $ZPFX/bin.
-i --from-icesNormally the code looks for the shim files by examining their contents (more info 1).
-o --one-lineDisplay the list of shim files without line breaks, in a single line, after spaces.
-s --shortDon't show the plugin/snippet that the shim belongs to.
-h --helpShows usage information.

Cygwin support​

The sbin ice-modifier has an explicit Cygwin support – it creates additional, extra shim files – Windows batch scripts that allow running the shielded applications from e.g.: Windows run dialog – if the ~/.zi/polaris/bin directory is being added to the Windows PATH environment variable, for example (it is a good idea to do so, IMHO). The Windows shims have the same name as the standard ones (which are also being created, normally) plus the .cmd extension. You can test the feature by e.g.: installing Firefox from the Zi package via:

zi pack=bgn for firefox

Install bin-gem-node​

Source

Add the following snippet in the .zshrc file:

zi light z-shell/z-a-bin-gem-node

This will register the shim-list subcommand and following ice-modifiers:

Footnotes​

  1. shims created by the bin-gem-node annex have a fixed structure, this option instructs Zi to show the list of shims that results from the sbin ice-modifier of the loaded plugins. If a plugin for example has sbin'git-open', means that such shim has already been created. ↩