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General utilities

Below you can find a list of general purpose utilities.

spaceship::exists

Signature
spaceship::exists <command>

This command validates that given program is available for execution. It checks for PATH binaries, functions, and builtins. It returns zero exit code if a command exists and non-zero code otherwise.

You can use this utility to check if some program is installed and perform actions conditionally. For example, you can either return an error and exit or continue script's execution. For example:

# Check multiple commands for existing
if spaceship::exists nvm; then
  # extract nvm version
elif spaceship::exists node; then
  # extract node version
else
  return
fi

# Do nothing if docker is not installed
spaceship::exists docker || return

spaceship::defined

Signature
spaceship::defined <function>

The same as spaceship::exists, but for functions. It returns zero exit code if a function has been defined previously and non-zero if function hasn't.

You can use this utility to check if a user has previously defined a function or not. For example:

# Check if section has been defined
if spaceship::defined spaceship_section; then
  spaceship_section
else
  # section is not found
fi

spaceship::is_git

This utility returns zero exit code if a current working directory is a Git repository and non-zero if it's not. For example:

# Return if current directory is not a git repository
spaceship::is_git || return

spaceship::is_hg

The same as spaceship::is_git, but for Mercurial repositories. This utility returns zero exit code if a current working directory is a Mercurial repository and non-zero if it's not.

# Return if current directory is not a Mercurial repository
spaceship::is_hg || return

spaceship::is_section_async

Checks if a section is asynchronous or not by checking SPACESHIP_<SECTION>_ASYNC option. This utility returns zero exit code if a section is asynchronous and non-zero if it's not.

If SPACESHIP_PROMPT_ASYNC is set to false, then all sections are considered to be synchronous.

Signature
spaceship::is_section_async <section>
  1. section Required — a section to be checked.

Some sections are always synchronous, not matter what, to ensure correct work of the prompt. Those are: user, dir, host, exec_time, async, line_sep, jobs, exit_code and char.

spaceship::is_prompt_async

Checks if the prompt works in asynchronous mode or not. This utility returns zero exit code if the prompt works in asynchronous mode and non-zero if it's not.

Check if SPACESHIP_PROMPT_ASYNC is set to true and zsh-async is loaded.

spaceship::deprecated

This utility checks if option variable is set and if it is, prints the message. The message supports escapes to set foreground color, background color and other visual effects.

Signature
spaceship::deprecated <option> [message]
  1. option Required — the name of a deprecated variable. If this variable is set (contains any value), then "%B$deprecated%b is deprecated. will be printed. %B and %b is escapes to set the bold style for text.
  2. message Optional — a string for additional deprecation message. Can contain prompt expansions.

Read more about escapes in Prompt Expansion section of Zsh documentation.

Here's an example of usage:

# Check if SPACESHIP_BATTERY_ALWAYS_SHOW is set
spaceship::deprecated SPACESHIP_BATTERY_ALWAYS_SHOW "Use %BSPACESHIP_BATTERY_SHOW='always'%b instead."
#> SPACESHIP_BATTERY_ALWAYS_SHOW is deprecated. Use SPACESHIP_BATTERY_SHOW='always' instead.

spaceship::displaytime

This utility converts seconds into a human-readable format. It splits seconds into days (d), hours (h), minutes (m) and seconds (s).

Signature
spaceship::displaytime <seconds> [precision]
  1. seconds Required — seconds for conversion into the readable format.
  2. precision Optional — precision of the output. Default value is 1.

The usage example looks like this:

spaceship::displaytime 123456
#> 1d 10h 17m 36.0s

paceship::displaytime 123.45 2
#> 2m 3.45s

spaceship::union

A utility for performing a union (intersection) of arrays. It lists the contents found in two or more arrays.

Spaceship uses this utility internally for resolution of sections that need to be sourced.

Signature
spaceship::union <arr1[ arr2[ ...]]>
  1. arr... — a list of arrays.

Here is an example:

arr1=('a' 'b' 'c')
arr2=('b' 'c' 'd')
arr3=('c' 'd' 'e')
spaceship::union $arr1 $arr2 $arr3
#> a b c d e

spaceship::upsearch

Performs an upward search for a specific file or directory. Returns the path of the first found file or directory. Goes upwards up to the repository or system root directory. Useful for understanding the context of a current directory.

Signature
spaceship::upsearch [--silent] <paths...>
  1. paths... Required — a list of paths to search.
  2. --silent or -s Optional — if set, then the utility will return zero exit code, if at least one of paths is found and non-zero, if not.

This can be used for detecting project context or finding a specific file upwards.

# Understanding the project context
spaceship::upsearch -s package.json node_modules && echo "Node project detected."

# Finding a specific file upwards
spaceship::upsearch package.json
#> /path/to/project/package.json

spaceship::extract

This utility queries data files for a specific key. It returns the value of the key. Exits with non-zero code when the file type is unknown, data cannot be read, or the key is not found.

Signature
spaceship::extract --<type> <file> [key]
  1. --type Required — a type of the data file. Can be json, yaml, toml or xml.
  2. file Required — a path to the data file.
  3. key Optional — a key to query within a data file.

You can use this utility to query data from a data file:

spaceship::extract --json package.json "author.name"
#> "John Doe"

It needs the following tools for reading data files:

Tip

The most universal solution for reading data files is to use python-yq.