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.bash_prompt
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.bash_prompt
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#!/usr/bin/env bash
# bash prompt by eric-chahin, forked from twolfson
# Originally forked from gf3, https://gist.github.com/gf3/306785
#set -uo pipefail
# If we are on a colored terminal
if tput setaf 1 &> /dev/null; then
# Reset the shell from our `if` check
tput sgr0 &> /dev/null
# If you would like to customize your colors, use
# # Attribution: http://linuxtidbits.wordpress.com/2008/08/11/output-color-on-bash-scripts/
# for i in $(seq 0 $(tput colors)); do
# echo " $(tput setaf $i)Text$(tput sgr0) $(tput bold)$(tput setaf $i)Text$(tput sgr0) $(tput sgr 0 1)$(tput setaf $i)Text$(tput sgr0) \$(tput setaf $i)"
# done
# Save common color actions
bash_prompt_bold="$(tput bold)"
bash_prompt_reset="$(tput sgr0)"
# If the terminal supports at least 256 colors, write out our 256 color based set
if [[ "$(tput colors)" -ge 256 ]] &> /dev/null; then
bash_prompt_user_color_default="$bash_prompt_bold$(tput setaf 27)" # BOLD BLUE
bash_prompt_preposition_color_default="$bash_prompt_bold$(tput setaf 7)" # BOLD WHITE
bash_prompt_device_color_default="$bash_prompt_bold$(tput setaf 39)" # BOLD CYAN
bash_prompt_dir_color_default="$bash_prompt_bold$(tput setaf 76)" # BOLD GREEN
bash_prompt_git_status_color_default="$bash_prompt_bold$(tput setaf 154)" # BOLD YELLOW
bash_prompt_git_progress_color_default="$bash_prompt_bold$(tput setaf 9)" # BOLD RED
else
# Otherwise, use colors from our set of 8
bash_prompt_user_color_default="$bash_prompt_bold$(tput setaf 4)" # BOLD BLUE
bash_prompt_preposition_color_default="$bash_prompt_bold$(tput setaf 7)" # BOLD WHITE
bash_prompt_device_color_default="$bash_prompt_bold$(tput setaf 6)" # BOLD CYAN
bash_prompt_dir_color_default="$bash_prompt_bold$(tput setaf 2)" # BOLD GREEN
bash_prompt_git_status_color_default="$bash_prompt_bold$(tput setaf 3)" # BOLD YELLOW
bash_prompt_git_progress_color_default="$bash_prompt_bold$(tput setaf 1)" # BOLD RED
fi
bash_prompt_symbol_color_default="$bash_prompt_bold" # BOLD
bash_prompt_symbol_error_color_default="$bash_prompt_bold$(tput setaf 1)" # BOLD RED
else
# Otherwise, use ANSI escape sequences for coloring
# If you would like to customize your colors, use
# DEV: 30-39 lines up 0-9 from `tput`
# for i in $(seq 0 109); do
# echo -n -e "\033[1;${i}mText$(tput sgr0) "
# echo "\033[1;${i}m"
# done
bash_prompt_reset="\033[m"
bash_prompt_user_color_default="\033[1;34m" # BLUE
bash_prompt_preposition_color_default="\033[1;37m" # WHITE
bash_prompt_device_color_default="\033[1;36m" # CYAN
bash_prompt_dir_color_default="\033[1;32m" # GREEN
bash_prompt_git_status_color_default="\033[1;33m" # YELLOW
bash_prompt_git_progress_color_default="\033[1;31m" # RED
bash_prompt_symbol_color_default="" # NORMAL
bash_prompt_symbol_error_color_default="\033[1;31m" # RED
fi
# Define the default prompt terminator character '$'
if [[ "$UID" == 0 ]]; then
bash_prompt_symbol="#"
else
bash_prompt_symbol="\$"
fi
# Fill in any defaults not set from the environment
: "${PROMPT_USER_COLOR:=$bash_prompt_user_color_default}"
: "${PROMPT_PREPOSITION_COLOR:=$bash_prompt_preposition_color_default}"
: "${PROMPT_DEVICE_COLOR:=$bash_prompt_device_color_default}"
: "${PROMPT_DIR_COLOR:=$bash_prompt_dir_color_default}"
: "${PROMPT_GIT_STATUS_COLOR:=$bash_prompt_git_status_color_default}"
: "${PROMPT_GIT_PROGRESS_COLOR:=$bash_prompt_git_progress_color_default}"
: "${PROMPT_SYMBOL:=$bash_prompt_symbol}"
: "${PROMPT_SYMBOL_COLOR:=$bash_prompt_symbol_color_default}"
: "${PROMPT_SYMBOL_ERROR_COLOR:=$bash_prompt_symbol_error_color_default}"
# Set up symbols
## Apply symbol overrides that have been set in the environment
## DEV: Working unicode symbols can be determined via the following gist
## **WARNING: The following gist has 64k lines and may freeze your browser**
## https://gist.github.com/twolfson/9cc7968eb6ee8b9ad877
: "${PROMPT_DIRTY_WORKING_TREE_SYMBOL:="*"}"
: "${PROMPT_DIRTY_INDEX_SYMBOL:="+"}"
: "${PROMPT_UNPUSHED_SYMBOL:="↑"}"
: "${PROMPT_UNPULLED_SYMBOL:="↓"}"
# Set up behavior options
: "${PROMPT_SHOW_ERROR_ONCE:='1'}"
: "${PROMPT_COMMAND:=}"
# Define all our helper functions
function bash_prompt_get_git_branch() {
# On branches, this will return the branch name
# On non-branches, (no branch)
ref="$(git symbolic-ref HEAD 2> /dev/null | sed -e 's/refs\/heads\///')"
if [[ "$ref" != "" ]]; then
echo "$ref"
else
echo "(no branch)"
fi
}
function bash_prompt_get_git_progress() {
# Detect in-progress actions (e.g. merge, rebase)
# https://github.com/git/git/blob/v1.9-rc2/wt-status.c#L1199-L1241
git_dir="$(git rev-parse --git-dir)"
# git merge
if [[ -f "$git_dir/MERGE_HEAD" ]]; then
echo " [merge]"
elif [[ -d "$git_dir/rebase-apply" ]]; then
# git am
if [[ -f "$git_dir/rebase-apply/applying" ]]; then
echo " [am]"
# git rebase
else
echo " [rebase]"
fi
elif [[ -d "$git_dir/rebase-merge" ]]; then
# git rebase --interactive/--merge
echo " [rebase]"
elif [[ -f "$git_dir/CHERRY_PICK_HEAD" ]]; then
# git cherry-pick
echo " [cherry-pick]"
fi
if [[ -f "$git_dir/BISECT_LOG" ]]; then
# git bisect
echo " [bisect]"
fi
if [[ -f "$git_dir/REVERT_HEAD" ]]; then
# git revert --no-commit
echo " [revert]"
fi
}
bash_prompt_is_branch1_behind_branch2 () {
# $ git log origin/master..master -1
# commit 4a633f715caf26f6e9495198f89bba20f3402a32
# Author: Todd Wolfson <[email protected]>
# Date: Sun Jul 7 22:12:17 2013 -0700
#
# Unsynced commit
# Find the first log (if any) that is in branch1 but not branch2
first_log="$(git log $1..$2 -1 2> /dev/null)"
# Exit with 0 if there is a first log, 1 if there is not
[[ -n "$first_log" ]]
}
bash_prompt_parse_git_ahead () {
# Grab the local and remote branch
branch="$(bash_prompt_get_git_branch)"
remote="$(git config --get "branch.${branch}.remote" || echo -n "origin")"
remote_branch="$remote/$branch"
if (bash_prompt_is_branch1_behind_branch2 "$remote_branch" "$branch"); then
echo 1
fi
}
bash_prompt_parse_git_behind () {
# Grab the branch
branch="$(bash_prompt_get_git_branch)"
remote="$(git config --get "branch.${branch}.remote" || echo -n "origin")"
remote_branch="$remote/$branch"
# If the local branch is behind the remote branch
if bash_prompt_is_branch1_behind_branch2 "$branch" "$remote_branch"; then
# echo our character
echo 1
fi
}
function get_first_char() {
echo "${1::1}"
}
function get_second_char() {
echo "${1:1:1}"
}
function bash_prompt_parse_git_dirty() {
git status --porcelain 2>/dev/null | while IFS= read -r line ; do
# Avoid untracked files
if [[ "${line::2}" != "??" ]]; then
# Choose first or second character
status=$($1 "$line")
if [[ -n "${status// }" ]]; then
echo 1
return
fi
fi
done
}
function bash_prompt_is_on_git() {
git rev-parse 2> /dev/null
}
function bash_prompt_get_git_status() {
if [[ "$(bash_prompt_parse_git_dirty get_second_char)" == 1 ]]; then
printf '%s' "$PROMPT_DIRTY_WORKING_TREE_SYMBOL"
fi
if [[ "$(bash_prompt_parse_git_dirty get_first_char)" == 1 ]]; then
printf '%s' "$PROMPT_DIRTY_INDEX_SYMBOL"
fi
if [[ "$(bash_prompt_parse_git_behind)" == 1 ]]; then
printf '%s' "$PROMPT_UNPULLED_SYMBOL"
fi
if [[ "$(bash_prompt_parse_git_ahead)" == 1 ]]; then
printf '%s' "$PROMPT_UNPUSHED_SYMBOL"
fi
}
bash_prompt_get_git_info () {
# Grab the branch
branch="$(bash_prompt_get_git_branch)"
# If there are any branches
if [[ "$branch" != "" ]]; then
# Echo the branch
output="$branch"
# Add on the git status
output="$output$(bash_prompt_get_git_status)"
# Echo our output
echo "$output"
fi
}
bash_prompt_get_symbol_color () {
# Verify we have an exit code set
if [[ "$bash_prompt_exit_code" == "" ]]; then
echo "Missing \`bash_prompt_exit_code\` for prompt symbol coloring" 1>&2
echo "Please verify \`PROMPT_COMMAND\` includes \`bash_prompt_command\` (enabled unless overwritten)" 1>&2
echo "$PROMPT_SYMBOL_COLOR"
return
fi
exit_code="$bash_prompt_exit_code"
# If we'd like to show errors once, then inspect further
# DEV: This is a personal preference around seeing a red $ on any failing command consistently
# DEV: This also works to ignore keyboard interrupts in the prompt itself (normally exit code 130)
# This will respect keyboard interrupt in running programs though (e.g. `time cat`)
# DEV: Further explanation of all scenarios, https://github.com/twolfson/sexy-bash-prompt/pull/89#issuecomment-685239313
if [[ "$PROMPT_SHOW_ERROR_ONCE" == "1" ]]; then
# If the last command has not changed (including its timestamp), then ignore our exit code
# last_command="501 echo hi"
if [[ "$bash_prompt_last_command" == "$bash_prompt_current_command" ]]; then
exit_code="0"
fi
fi
# Determine and output our symbol color
symbol_color="$PROMPT_SYMBOL_COLOR"
if [[ "$exit_code" != 0 ]]; then
symbol_color="$PROMPT_SYMBOL_ERROR_COLOR"
fi
echo "$symbol_color"
}
# Define our hooks for storing the exit code and past commands
bash_prompt_current_command=""
bash_prompt_command () {
# Capture and expose exit code first before anything, otherwise it'll be lost
export bash_prompt_exit_code="$?"
# Capture last commands for `$PROMPT_SHOW_ERROR_ONCE` logic
# DEV: We would save these in `get_symbol_color` but its subshell variables don't persist
export bash_prompt_last_command="$bash_prompt_current_command"
export bash_prompt_current_command="$(history 1)"
# DEV: We don't set PS1 in here as it would prevent extension, see https://github.com/twolfson/sexy-bash-prompt/issues/90
}
# DEV: Extend `PROMPT_COMMAND` if there already is one
if [[ -z "$PROMPT_COMMAND" ]]; then
PROMPT_COMMAND="bash_prompt_command ; $PROMPT_COMMAND"
else
PROMPT_COMMAND="bash_prompt_command"
fi
#PS1="\[$bash_prompt_reset\]\
#\[$PROMPT_USER_COLOR\]\u\[$bash_prompt_reset\] \
#\[$PROMPT_PREPOSITION_COLOR\]at\[$bash_prompt_reset\] \
#\[$PROMPT_DEVICE_COLOR\]\h\[$bash_prompt_reset\] \
#\[$PROMPT_PREPOSITION_COLOR\]in\[$bash_prompt_reset\] \
#\[$PROMPT_DIR_COLOR\]\w\[$bash_prompt_reset\]\
#\$( bash_prompt_is_on_git && \
# echo -n \" \[$PROMPT_PREPOSITION_COLOR\]on\[$bash_prompt_reset\] \" && \
# echo -n \"\[$PROMPT_GIT_STATUS_COLOR\]\$(bash_prompt_get_git_info)\" && \
# echo -n \"\[$PROMPT_GIT_PROGRESS_COLOR\]\$(bash_prompt_get_git_progress)\" && \
# echo -n \"\[$bash_prompt_reset\]\")\
#\[\$(bash_prompt_get_symbol_color)\] $bash_prompt_symbol \[$bash_prompt_reset\]"
PS1="\[$bash_prompt_reset\]\
\[$PROMPT_DIR_COLOR\]\w\[$bash_prompt_reset\]\
\$( bash_prompt_is_on_git && \
echo -n \" \[$PROMPT_PREPOSITION_COLOR\]on\[$bash_prompt_reset\] \" && \
echo -n \"\[$PROMPT_GIT_STATUS_COLOR\]\$(bash_prompt_get_git_info)\" && \
echo -n \"\[$PROMPT_GIT_PROGRESS_COLOR\]\$(bash_prompt_get_git_progress)\" && \
echo -n \"\[$bash_prompt_reset\]\")\
\[\$(bash_prompt_get_symbol_color)\] $bash_prompt_symbol \[$bash_prompt_reset\]"