427 lines
12 KiB
Bash
427 lines
12 KiB
Bash
#! bash oh-my-bash.module
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PROMPT_DIRTRIM=${PROMPT_DIRTRIM:-2} # bash4 and above
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######################################################################
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## Configurations in Oh My Bash
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OMB_PROMPT_SHOW_PYTHON_VENV=${OMB_PROMPT_SHOW_PYTHON_VENV:=true}
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######################################################################
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DEBUG=0
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function debug {
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if [[ ${DEBUG} -ne 0 ]]; then
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>&2 echo -e "$@"
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fi
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}
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######################################################################
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### Segment drawing
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# A few utility functions to make it easy and re-usable to draw segmented prompts
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CURRENT_BG='NONE'
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CURRENT_RBG='NONE'
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SEGMENT_SEPARATOR=''
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RIGHT_SEPARATOR=''
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LEFT_SUBSEG=''
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RIGHT_SUBSEG=''
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function text_effect {
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case "$1" in
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reset) echo 0;;
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bold) echo 1;;
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underline) echo 4;;
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esac
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}
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# to add colors, see
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# http://bitmote.com/index.php?post/2012/11/19/Using-ANSI-Color-Codes-to-Colorize-Your-Bash-Prompt-on-Linux
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# under the "256 (8-bit) Colors" section, and follow the example for orange below
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function fg_color {
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case "$1" in
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black) echo 30;;
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red) echo 31;;
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green) echo 32;;
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yellow) echo 33;;
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blue) echo 34;;
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magenta) echo 35;;
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cyan) echo 36;;
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white) echo 37;;
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orange) echo 38\;5\;166;;
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esac
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}
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function bg_color {
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case "$1" in
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black) echo 40;;
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red) echo 41;;
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green) echo 42;;
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yellow) echo 43;;
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blue) echo 44;;
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magenta) echo 45;;
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cyan) echo 46;;
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white) echo 47;;
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orange) echo 48\;5\;166;;
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esac;
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}
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# TIL: declare is global not local, so best use a different name
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# for codes (mycodes) as otherwise it'll clobber the original.
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# this changes from BASH v3 to BASH v4.
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function ansi {
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local seq
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local -a mycodes=("${!1}")
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debug "ansi: ${!1} all: $* aka ${mycodes[@]}"
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seq=""
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local i
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for ((i = 0; i < ${#mycodes[@]}; i++)); do
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if [[ -n $seq ]]; then
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seq="${seq};"
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fi
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seq="${seq}${mycodes[$i]}"
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done
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debug "ansi debug:" '\\[\\033['${seq}'m\\]'
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echo -ne '\[\033['${seq}'m\]'
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# PR="$PR\[\033[${seq}m\]"
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}
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function ansi_single {
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echo -ne '\[\033['$1'm\]'
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}
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# Begin a segment
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# Takes two arguments, background and foreground. Both can be omitted,
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# rendering default background/foreground.
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function prompt_segment {
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local bg fg
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local -a codes
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debug "Prompting $1 $2 $3"
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# if commented out from kruton's original... I'm not clear
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# if it did anything, but it messed up things like
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# prompt_status - Erik 1/14/17
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# if [[ -z $1 || ( -z $2 && $2 != default ) ]]; then
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codes=("${codes[@]}" $(text_effect reset))
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# fi
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if [[ -n $1 ]]; then
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bg=$(bg_color $1)
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codes=("${codes[@]}" $bg)
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debug "Added $bg as background to codes"
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fi
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if [[ -n $2 ]]; then
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fg=$(fg_color $2)
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codes=("${codes[@]}" $fg)
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debug "Added $fg as foreground to codes"
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fi
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debug "Codes: "
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# local -p codes
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if [[ $CURRENT_BG != NONE && $1 != $CURRENT_BG ]]; then
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local -a intermediate=($(fg_color $CURRENT_BG) $(bg_color $1))
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debug "pre prompt " $(ansi intermediate[@])
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PR="$PR $(ansi intermediate[@])$SEGMENT_SEPARATOR"
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debug "post prompt " $(ansi codes[@])
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PR="$PR$(ansi codes[@]) "
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else
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debug "no current BG, codes is $codes[@]"
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PR="$PR$(ansi codes[@]) "
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fi
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CURRENT_BG=$1
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[[ -n $3 ]] && PR="$PR$3"
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}
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# End the prompt, closing any open segments
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function prompt_end {
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if [[ -n $CURRENT_BG ]]; then
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local -a codes=($(text_effect reset) $(fg_color $CURRENT_BG))
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PR="$PR $(ansi codes[@])$SEGMENT_SEPARATOR"
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fi
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local -a reset=($(text_effect reset))
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PR="$PR $(ansi reset[@])"
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CURRENT_BG=''
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}
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### virtualenv prompt
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function prompt_virtualenv {
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# Exclude pyenv
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[[ $PYENV_VIRTUALENV_INIT == 1 ]] && _omb_util_binary_exists pyenv && return 0
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if [[ -d $VIRTUAL_ENV ]]; then
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# Python could output the version information in both stdout and
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# stderr (e.g. if using pyenv, the output goes to stderr).
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local VERSION_OUTPUT=$("$VIRTUAL_ENV"/bin/python --version 2>&1)
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# The last word of the output of `python --version`
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# corresponds to the version number.
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local VENV_VERSION=$(awk '{print $NF}' <<< "$VERSION_OUTPUT")
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prompt_segment cyan white "[v] $(basename "$VENV_VERSION")"
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fi
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}
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### pyenv prompt
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function prompt_pyenv {
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if [[ $PYENV_VIRTUALENV_INIT == 1 ]] && _omb_util_binary_exists pyenv; then
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# Priority is shell > local > global
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# When pyenv shell is set, the environment variable $PYENV_VERSION is set with the value we want
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if [[ ! ${PYENV_VERSION-} ]]; then
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# If not set, fall back to pyenv local/global to get the version
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local PYENV_VERSION=$(pyenv local 2>/dev/null || pyenv global 2>/dev/null)
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fi
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# If it is not the system's python, then display additional info
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if [[ "$PYENV_VERSION" != "system" ]]; then
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# It's a pyenv virtualenv, get the version number
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if [[ -d $PYENV_VIRTUAL_ENV ]]; then
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local VERSION_OUTPUT=$("$PYENV_VIRTUAL_ENV"/bin/python --version 2>&1)
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local PYENV_VENV_VERSION=$(awk '{print $NF}' <<< "$VERSION_OUTPUT")
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prompt_segment cyan white "[$PYENV_VERSION] $(basename "$PYENV_VENV_VERSION")"
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else
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prompt_segment cyan white "$PYENV_VERSION"
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fi
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fi
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fi
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}
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### conda env prompt
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function prompt_condaenv {
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if [[ -d $CONDA_PREFIX ]]; then
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if [[ ! $CONDA_PROMPT_MODIFIER ]]; then
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CONDA_PROMPT_MODIFIER=$(basename "$CONDA_PREFIX")
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fi
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local CONDA_PYTHON_VERSION=$("$CONDA_PREFIX"/bin/python -c 'import platform;print(platform.python_version())')
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prompt_segment cyan white "[c] $CONDA_PROMPT_MODIFIER $CONDA_PYTHON_VERSION"
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fi
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}
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### Prompt components
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# Each component will draw itself, and hide itself if no information needs to be shown
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# Context: user@hostname (who am I and where am I)
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function prompt_context {
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local user=$(whoami)
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if [[ $user != $DEFAULT_USER || -n $SSH_CLIENT ]]; then
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prompt_segment black default "$user@\h"
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fi
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}
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# prints history followed by HH:MM, useful for remembering what
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# we did previously
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function prompt_histdt {
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prompt_segment black default "\! [\A]"
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}
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function git_status_dirty {
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dirty=$(command git status -s 2> /dev/null | tail -n 1)
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[[ -n $dirty ]] && echo " ●"
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}
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function git_stash_dirty {
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stash=$(command git stash list 2> /dev/null | tail -n 1)
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[[ -n $stash ]] && echo " ⚑"
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}
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# Git: branch/detached head, dirty status
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function prompt_git {
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local ref dirty
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if command git rev-parse --is-inside-work-tree &>/dev/null; then
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ZSH_THEME_GIT_PROMPT_DIRTY='±'
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dirty=$(git_status_dirty)
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stash=$(git_stash_dirty)
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ref=$(command git symbolic-ref HEAD 2> /dev/null) ||
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ref="➦ $(command git describe --exact-match --tags HEAD 2> /dev/null)" ||
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ref="➦ $(command git show-ref --head -s --abbrev | head -n1 2> /dev/null)"
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if [[ -n $dirty ]]; then
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prompt_segment yellow black
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else
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prompt_segment green black
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fi
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PR="$PR${ref/refs\/heads\// }$stash$dirty"
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fi
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}
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# Mercurial: clean, modified and uncomitted files
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function prompt_hg {
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local rev st branch
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if hg id &>/dev/null; then
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if hg prompt &>/dev/null; then
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if [[ $(hg prompt "{status|unknown}") == '?' ]]; then
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# if files are not added
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prompt_segment red white
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st='±'
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elif [[ $(hg prompt "{status|modified}") ]]; then
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# if any modification
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prompt_segment yellow black
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st='±'
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else
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# if working copy is clean
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prompt_segment green black $CURRENT_FG
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fi
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PR="$PR$(hg prompt "☿ {rev}@{branch}") $st"
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else
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st=""
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rev=$(hg id -n 2>/dev/null | sed 's/[^-0-9]//g')
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branch=$(hg id -b 2>/dev/null)
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if hg st | grep -q "^\?"; then
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prompt_segment red white
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st='±'
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elif hg st | grep -q "^[MA]"; then
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prompt_segment yellow black
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st='±'
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else
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prompt_segment green black $CURRENT_FG
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fi
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PR="$PR☿ $rev@$branch $st"
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fi
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fi
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}
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# Dir: current working directory
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function prompt_dir {
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prompt_segment blue black '\w'
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}
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# Status:
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# - was there an error
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# - am I root
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# - are there background jobs?
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function prompt_status {
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local symbols
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symbols=()
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[[ $RETVAL -ne 0 ]] && symbols+="$(ansi_single $(fg_color red))✘"
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[[ $UID -eq 0 ]] && symbols+="$(ansi_single $(fg_color yellow))⚡"
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[[ $(jobs -l | wc -l) -gt 0 ]] && symbols+="$(ansi_single $(fg_color cyan))⚙"
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[[ -n "$symbols" ]] && prompt_segment black default "$symbols"
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}
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######################################################################
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#
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# experimental right prompt stuff
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# requires setting prompt_foo to use PRIGHT vs PR
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# doesn't quite work per above
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function rightprompt {
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printf "%*s" $COLUMNS "$PRIGHT"
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}
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# quick right prompt I grabbed to test things.
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function __command_rprompt {
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local times= n=$COLUMNS tz
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for tz in ZRH:Europe/Zurich PIT:US/Eastern \
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MTV:US/Pacific TOK:Asia/Tokyo; do
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[ $n -gt 40 ] || break
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times="$times ${tz%%:*}\e[30;1m:\e[0;36;1m"
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times="$times$(TZ=${tz#*:} date +%H:%M)\e[0m"
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n=$(( $n - 10 ))
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done
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[ -z "$times" ] || printf "%${n}s$times\\r" ''
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}
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# this doens't wrap code in \[ \]
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function ansi_r {
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local seq
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local -a mycodes2=("${!1}")
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debug "ansi: ${!1} all: $* aka ${mycodes2[@]}"
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seq=""
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local i
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for ((i = 0; i < ${#mycodes2[@]}; i++)); do
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if [[ -n $seq ]]; then
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seq="${seq};"
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fi
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seq="${seq}${mycodes2[$i]}"
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done
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debug "ansi debug:" '\\[\\033['${seq}'m\\]'
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echo -ne '\033['${seq}'m'
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# PR="$PR\[\033[${seq}m\]"
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}
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# Begin a segment on the right
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# Takes two arguments, background and foreground. Both can be omitted,
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# rendering default background/foreground.
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function prompt_right_segment {
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local bg fg
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local -a codes
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debug "Prompt right"
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debug "Prompting $1 $2 $3"
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# if [[ -z $1 || ( -z $2 && $2 != default ) ]]; then
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codes=("${codes[@]}" $(text_effect reset))
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# fi
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if [[ -n $1 ]]; then
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bg=$(bg_color $1)
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codes=("${codes[@]}" $bg)
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debug "Added $bg as background to codes"
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fi
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if [[ -n $2 ]]; then
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fg=$(fg_color $2)
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codes=("${codes[@]}" $fg)
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debug "Added $fg as foreground to codes"
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fi
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debug "Right Codes: "
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# local -p codes
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local -a intermediate2=($(fg_color $1) $(bg_color $CURRENT_RBG) )
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# PRIGHT="$PRIGHT---"
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debug "pre prompt " $(ansi_r intermediate2[@])
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PRIGHT="$PRIGHT$(ansi_r intermediate2[@])$RIGHT_SEPARATOR"
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debug "post prompt " $(ansi_r codes[@])
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PRIGHT="$PRIGHT$(ansi_r codes[@]) "
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# else
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# debug "no current BG, codes is $codes[@]"
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# PRIGHT="$PRIGHT$(ansi codes[@]) "
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# fi
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CURRENT_RBG=$1
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[[ -n $3 ]] && PRIGHT="$PRIGHT$3"
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}
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######################################################################
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## Emacs prompt --- for dir tracking
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function prompt_emacsdir {
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# no color or other setting... this will be deleted per above
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PR="DIR \w DIR$PR"
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}
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######################################################################
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## Main prompt
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function build_prompt {
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[[ ! -z ${AG_EMACS_DIR+x} ]] && prompt_emacsdir
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prompt_status
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#[[ -z ${AG_NO_HIST+x} ]] && prompt_histdt
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[[ -z ${AG_NO_CONTEXT+x} ]] && prompt_context
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if [[ ${OMB_PROMPT_SHOW_PYTHON_VENV-} ]]; then
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prompt_virtualenv
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prompt_pyenv
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prompt_condaenv
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fi
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prompt_dir
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prompt_git
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prompt_hg
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prompt_end
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}
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function _omb_theme_PROMPT_COMMAND {
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local RETVAL=$?
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local PRIGHT=""
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local CURRENT_BG=NONE
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local PR="$(ansi_single $(text_effect reset))"
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build_prompt
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# uncomment below to use right prompt
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# PS1='\[$(tput sc; printf "%*s" $COLUMNS "$PRIGHT"; tput rc)\]'$PR
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PS1=$PR
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}
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_omb_util_add_prompt_command _omb_theme_PROMPT_COMMAND
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