Add new pyenv segment to show active python version

This commit provides a new segment `pyenv` to show current python environment.
This prompt can be used in place of `virtualenv` segment. However, it is
targeted at users of [pyenv](https://github.com/yyuu/pyenv) and not meant to
replace the `virtualenv` segment.

The prompt works by parsing output of `pyenv version` and displaying the first
word of the output as segment text. The design (color etc.) is same as the
`virtualenv` segment including the icon. The segment would need to be
revisited if `pyenv version` changes its output format.

Tested on my personal machines (Mac OSX 10.11.4 and Ubuntu 15.04).
This commit is contained in:
Sudarshan Wadkar 2016-05-14 14:00:40 -04:00
parent 41888bf2a9
commit 99429ab268
2 changed files with 17 additions and 0 deletions

View File

@ -116,6 +116,7 @@ The segments that are currently available are:
* **Python Segments:**
* `virtualenv` - Your Python [VirtualEnv](https://virtualenv.pypa.io/en/latest/).
* [`anaconda`](#anaconda) - Your active [Anaconda](https://www.continuum.io/why-anaconda) environment.
* `pyenv` - Your active python version as reported by the first word of [`pyenv version`](https://github.com/yyuu/pyenv). Note that the segment is not displayed if that word is _system_ i.e. the segment is inactive if you are using system python.
* **Ruby Segments:**
* [`chruby`](#chruby) - Ruby environment information using `chruby` (if one is active).
* [`rbenv`](#rbenv) - Ruby environment information using `rbenv` (if one is active).

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@ -935,6 +935,22 @@ prompt_virtualenv() {
fi
}
# pyenv: current active python version (with restrictions)
# More information on pyenv (Python version manager like rbenv and rvm):
# https://github.com/yyuu/pyenv
# the prompt parses output of pyenv version and only displays the first word
prompt_pyenv() {
local pyenv_version="$(pyenv version 2>/dev/null)"
pyenv_version="${pyenv_version%% *}"
# XXX: The following should return the same as above.
# This reads better for devs familiar with sed/awk/grep/cut utilities
# Using shell expansion/substitution may hamper future maintainability
#local pyenv_version="$(pyenv version 2>/dev/null | head -n1 | cut -d' ' -f1)"
if [[ -n "$pyenv_version" && "$pyenv_version" != "system" ]]; then
"$1_prompt_segment" "$0" "$2" "blue" "$DEFAULT_COLOR" "$pyenv_version" 'PYTHON_ICON'
fi
}
################################################################
# Prompt processing and drawing
################################################################