515 lines
16 KiB
Plaintext
515 lines
16 KiB
Plaintext
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#!/bin/zsh
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# Headline ZSH Prompt
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# Copyright (c) 2022 Moarram under the MIT License
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# To install, source this file from your .zshrc file
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# Customization variables begin around line 70
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# Formatting aliases
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# (add more if you need)
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reset=$'\e[0m'
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bold=$'\e[1m'
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faint=$'\e[2m'
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italic=$'\e[3m'
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underline=$'\e[4m'
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invert=$'\e[7m'
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# ...
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# Foreground color aliases
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black=$'\e[30m'
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red=$'\e[31m'
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green=$'\e[32m'
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yellow=$'\e[33m'
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blue=$'\e[34m'
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magenta=$'\e[35m'
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cyan=$'\e[36m'
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white=$'\e[37m'
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light_black=$'\e[90m'
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light_red=$'\e[91m'
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light_green=$'\e[92m'
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light_yellow=$'\e[93m'
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light_blue=$'\e[94m'
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light_magenta=$'\e[95m'
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light_cyan=$'\e[96m'
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light_white=$'\e[97m'
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# Background color aliases
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black_back=$'\e[40m'
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red_back=$'\e[41m'
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green_back=$'\e[42m'
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yellow_back=$'\e[43m'
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blue_back=$'\e[44m'
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magenta_back=$'\e[45m'
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cyan_back=$'\e[46m'
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white_back=$'\e[47m'
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light_black_back=$'\e[100m'
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light_red_back=$'\e[101m'
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light_green_back=$'\e[102m'
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light_yellow_back=$'\e[103m'
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light_blue_back=$'\e[104m'
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light_magenta_back=$'\e[105m'
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light_cyan_back=$'\e[106m'
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light_white_back=$'\e[107m'
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# Custom colors
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# REF: https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_(Select_Graphic_Rendition)_parameters
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# orange_yellow=$'\e[38;5;214m' # example 8-bit color
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# orange_brown=$'\e[38;2;191;116;46m' # example rgb color
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# ...
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# Flags
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! [ -z "$SSH_TTY$SSH_CONNECTION$SSH_CLIENT" ]
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IS_SSH=$? # 0=true, 1=false
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# ------------------------------------------------------------------------------
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# Customization
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# Use the following variables to customize the theme
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# These variables can also be set in your ~/.zshrc after sourcing this file
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# The style aliases for ANSI SGR codes (defined above) can be used there too
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# Info sources (enclose in single quotes as these will be eval'd, use empty string to hide segment)
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HEADLINE_USER_CMD='echo $USER'
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HEADLINE_HOST_CMD='hostname -s' # consider 'basename "$VIRTUAL_ENV"' to replace host with environment
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HEADLINE_PATH_CMD='print -rP "%~"'
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HEADLINE_GIT_BRANCH_CMD='headline_git_branch'
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HEADLINE_GIT_STATUS_CMD='headline_git_status'
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# Info symbols (optional)
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HEADLINE_USER_PREFIX='' # consider " "
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HEADLINE_HOST_PREFIX='' # consider " "
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HEADLINE_PATH_PREFIX='' # consider " "
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HEADLINE_BRANCH_PREFIX='' # consider " "
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# Info joints
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HEADLINE_USER_BEGIN=''
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if [ $IS_SSH = 0 ]; then HEADLINE_USER_BEGIN='=> '; fi
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HEADLINE_USER_TO_HOST=' @ '
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HEADLINE_HOST_TO_PATH=': '
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HEADLINE_PATH_TO_BRANCH=' | ' # only used when no padding between <path> and <branch>
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HEADLINE_PATH_TO_PAD='' # used if padding between <path> and <branch>
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HEADLINE_PAD_TO_BRANCH='' # used if padding between <path> and <branch>
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HEADLINE_BRANCH_TO_STATUS=' ['
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HEADLINE_STATUS_TO_STATUS='' # between each status section, consider "]"
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HEADLINE_STATUS_END=']'
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# Info padding character
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HEADLINE_PAD_CHAR=' ' # repeated for space between <path> and <branch>
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# Info truncation symbol
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HEADLINE_TRUNC_PREFIX='...' # shown where <path> or <branch> is truncated, consider "…"
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# Info styles
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HEADLINE_STYLE_DEFAULT='' # style applied to entire info line
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HEADLINE_STYLE_JOINT=$light_black
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HEADLINE_STYLE_USER=$bold$red
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HEADLINE_STYLE_HOST=$bold$yellow
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HEADLINE_STYLE_PATH=$bold$blue
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HEADLINE_STYLE_BRANCH=$bold$cyan
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HEADLINE_STYLE_STATUS=$bold$magenta
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# Info options
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HEADLINE_INFO_MODE=precmd # precmd|prompt (whether info line is in PROMPT or printed by precmd)
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# use "precmd" for window resize to work properly (but Ctrl+L doesn't show info line)
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# use "prompt" for Ctrl+L to clear properly (but window resize eats previous output)
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# Separator options
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HEADLINE_LINE_MODE=on # on|auto|off (whether to print the line above the prompt)
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# Separator character
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HEADLINE_LINE_CHAR='_' # repeated for line above information
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# Separator styles
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HEADLINE_STYLE_JOINT_LINE=$HEADLINE_STYLE_JOINT
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HEADLINE_STYLE_USER_LINE=$HEADLINE_STYLE_USER
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HEADLINE_STYLE_HOST_LINE=$HEADLINE_STYLE_HOST
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HEADLINE_STYLE_PATH_LINE=$HEADLINE_STYLE_PATH
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HEADLINE_STYLE_BRANCH_LINE=$HEADLINE_STYLE_BRANCH
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HEADLINE_STYLE_STATUS_LINE=$HEADLINE_STYLE_STATUS
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# Git branch characters
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HEADLINE_GIT_HASH=':' # hash prefix to distinguish from branch
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# Git status characters
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# To set individual status styles use "%{$reset<style>%}<char>"
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HEADLINE_GIT_STAGED='+'
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HEADLINE_GIT_CHANGED='!'
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HEADLINE_GIT_UNTRACKED='?'
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HEADLINE_GIT_BEHIND='↓'
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HEADLINE_GIT_AHEAD='↑'
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HEADLINE_GIT_DIVERGED='↕'
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HEADLINE_GIT_STASHED='*'
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HEADLINE_GIT_CONFLICTS='✘' # consider "%{$red%}✘"
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HEADLINE_GIT_CLEAN='' # consider "✓" or "✔"
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# Git status options
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HEADLINE_DO_GIT_STATUS_COUNTS=false # set "true" to show count of each status
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HEADLINE_DO_GIT_STATUS_OMIT_ONE=false # set "true" to omit the status number when it is 1
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# Prompt
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HEADLINE_PROMPT='%(#.#.%(!.!.$)) ' # consider "%#"
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HEADLINE_RPROMPT=''
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# Clock (prepends to RPROMPT)
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HEADLINE_DO_CLOCK=false # whether to show the clock
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HEADLINE_STYLE_CLOCK=$faint
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HEADLINE_CLOCK_FORMAT='%l:%M:%S %p' # consider "%+" for full date (see man strftime)
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# Exit code
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HEADLINE_DO_ERR=false # whether to show non-zero exit codes above prompt
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HEADLINE_DO_ERR_INFO=true # whether to show exit code meaning as well
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HEADLINE_ERR_PREFIX='→ '
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HEADLINE_STYLE_ERR=$italic$faint
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# ------------------------------------------------------------------------------
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# Options for zsh
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setopt PROMPT_SP # always start prompt on new line
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setopt PROMPT_SUBST # substitutions
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autoload -U add-zsh-hook
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PROMPT_EOL_MARK='' # remove weird % symbol
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ZLE_RPROMPT_INDENT=0 # remove extra space
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# Local variables
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_HEADLINE_LINE_OUTPUT='' # separator line
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_HEADLINE_INFO_OUTPUT='' # text line
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_HEADLINE_DO_SEP='false' # whether to show divider this time
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if [ $IS_SSH = 0 ]; then
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_HEADLINE_DO_SEP='true' # assume it's not a fresh window
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fi
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# Calculate length of string, excluding formatting characters
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# REF: https://old.reddit.com/r/zsh/comments/cgbm24/multiline_prompt_the_missing_ingredient/
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headline_prompt_len() { # (str, num)
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emulate -L zsh
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local -i COLUMNS=${2:-COLUMNS}
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local -i x y=${#1} m
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if (( y )); then
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while (( ${${(%):-$1%$y(l.1.0)}[-1]} )); do
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x=y
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(( y *= 2 ))
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done
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while (( y > x + 1 )); do
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(( m = x + (y - x) / 2 ))
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(( ${${(%):-$1%$m(l.x.y)}[-1]} = m ))
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done
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fi
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echo $x
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}
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# Repeat character a number of times
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# (replacing the "${(pl:$num::$char:)}" expansion)
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headline_repeat_char() { # (char, num)
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local str=''
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for (( i = 0; i < $2; i++ )); do
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str+=$1
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done
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echo $str
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}
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# Guess the exit code meaning
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headline_exit_meaning() { # (num)
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# REF: https://tldp.org/LDP/abs/html/exitcodes.html
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# REF: https://man7.org/linux/man-pages/man7/signal.7.html
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# NOTE: these meanings are not standardized
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case $1 in
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126) echo 'Command cannot execute';;
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127) echo 'Command not found';;
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129) echo 'Hangup';;
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130) echo 'Interrupted';;
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131) echo 'Quit';;
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132) echo 'Illegal instruction';;
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133) echo 'Trapped';;
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134) echo 'Aborted';;
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135) echo 'Bus error';;
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136) echo 'Arithmetic error';;
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137) echo 'Killed';;
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138) echo 'User signal 1';;
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139) echo 'Segmentation fault';;
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140) echo 'User signal 2';;
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141) echo 'Pipe error';;
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142) echo 'Alarm';;
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143) echo 'Terminated';;
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*) ;;
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esac
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}
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# Git command wrapper
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headline_git() {
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GIT_OPTIONAL_LOCKS=0 command git "$@"
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}
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# Git branch (or hash)
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headline_git_branch() {
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local ref
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ref=$(headline_git symbolic-ref --quiet HEAD 2> /dev/null)
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local ret=$?
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if [[ $ret == 0 ]]; then
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echo ${ref#refs/heads/} # remove "refs/heads/" to get branch
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else # not on a branch
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[[ $ret == 128 ]] && return # not a git repo
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ref=$(headline_git rev-parse --short HEAD 2> /dev/null) || return
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echo "$HEADLINE_GIT_HASH$ref" # hash prefixed to distingush from branch
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fi
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}
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# Git status
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headline_git_status() {
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# Data structures
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local order; order=('STAGED' 'CHANGED' 'UNTRACKED' 'BEHIND' 'AHEAD' 'DIVERGED' 'STASHED' 'CONFLICTS')
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local -A totals
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for key in $order; do
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totals+=($key 0)
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done
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# Retrieve status
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# REF: https://git-scm.com/docs/git-status
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local raw lines
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raw="$(headline_git status --porcelain -b 2> /dev/null)"
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if [[ $? == 128 ]]; then
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return 1 # catastrophic failure, abort
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fi
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lines=(${(@f)raw})
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# Process tracking line
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if [[ ${lines[1]} =~ '^## [^ ]+ \[(.*)\]' ]]; then
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local items=("${(@s/,/)match}")
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for item in $items; do
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if [[ $item =~ '(behind|ahead|diverged) ([0-9]+)?' ]]; then
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case $match[1] in
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'behind') totals[BEHIND]=$match[2];;
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'ahead') totals[AHEAD]=$match[2];;
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'diverged') totals[DIVERGED]=$match[2];;
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esac
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fi
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done
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fi
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# Process status lines
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for line in $lines; do
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if [[ $line =~ '^##|^!!' ]]; then
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continue
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elif [[ $line =~ '^U[ADU]|^[AD]U|^AA|^DD' ]]; then
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totals[CONFLICTS]=$(( ${totals[CONFLICTS]} + 1 ))
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elif [[ $line =~ '^\?\?' ]]; then
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totals[UNTRACKED]=$(( ${totals[UNTRACKED]} + 1 ))
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elif [[ $line =~ '^[MTADRC] ' ]]; then
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totals[STAGED]=$(( ${totals[STAGED]} + 1 ))
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elif [[ $line =~ '^[MTARC][MTD]' ]]; then
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totals[STAGED]=$(( ${totals[STAGED]} + 1 ))
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totals[CHANGED]=$(( ${totals[CHANGED]} + 1 ))
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elif [[ $line =~ '^ [MTADRC]' ]]; then
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totals[CHANGED]=$(( ${totals[CHANGED]} + 1 ))
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fi
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done
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# Check for stashes
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if $(headline_git rev-parse --verify refs/stash &> /dev/null); then
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totals[STASHED]=$(headline_git rev-list --walk-reflogs --count refs/stash 2> /dev/null)
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fi
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# Build string
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local prefix status_str
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status_str=''
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for key in $order; do
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if (( ${totals[$key]} > 0 )); then
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if (( ${#HEADLINE_STATUS_TO_STATUS} && ${#status_str} )); then # not first iteration
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local style_joint="$reset$HEADLINE_STYLE_DEFAULT$HEADLINE_STYLE_JOINT"
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local style_status="$resetHEADLINE_STYLE_DEFAULT$HEADLINE_STYLE_STATUS"
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status_str="$status_str%{$style_joint%}$HEADLINE_STATUS_TO_STATUS%{$style_status%}"
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fi
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eval prefix="\$HEADLINE_GIT_${key}"
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if [[ $HEADLINE_DO_GIT_STATUS_COUNTS == 'true' ]]; then
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if [[ $HEADLINE_DO_GIT_STATUS_OMIT_ONE == 'true' && (( ${totals[$key]} == 1 )) ]]; then
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status_str="$status_str$prefix"
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else
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status_str="$status_str${totals[$key]}$prefix"
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fi
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else
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status_str="$status_str$prefix"
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fi
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fi
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done
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# Return
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if (( ${#status_str} )); then
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echo $status_str
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else
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echo $HEADLINE_GIT_CLEAN
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fi
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|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
# Before executing command
|
||
|
|
add-zsh-hook preexec headline_preexec
|
||
|
|
headline_preexec() {
|
||
|
|
# TODO better way of knowing the prompt is at the top of the terminal
|
||
|
|
if [[ $2 == 'clear' ]]; then
|
||
|
|
_HEADLINE_DO_SEP='false'
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
# Before prompting
|
||
|
|
add-zsh-hook precmd headline_precmd
|
||
|
|
headline_precmd() {
|
||
|
|
local err=$?
|
||
|
|
|
||
|
|
# Information
|
||
|
|
local user_str host_str path_str branch_str status_str
|
||
|
|
user_str=$(eval $HEADLINE_USER_CMD)
|
||
|
|
host_str=$(eval $HEADLINE_HOST_CMD)
|
||
|
|
path_str=$(eval $HEADLINE_PATH_CMD)
|
||
|
|
branch_str=$(eval $HEADLINE_GIT_BRANCH_CMD)
|
||
|
|
status_str=$(eval $HEADLINE_GIT_STATUS_CMD)
|
||
|
|
|
||
|
|
# Shared variables
|
||
|
|
_HEADLINE_LEN_REMAIN=$COLUMNS
|
||
|
|
_HEADLINE_INFO_LEFT=''
|
||
|
|
_HEADLINE_LINE_LEFT=''
|
||
|
|
_HEADLINE_INFO_RIGHT=''
|
||
|
|
_HEADLINE_LINE_RIGHT=''
|
||
|
|
|
||
|
|
# Git status
|
||
|
|
if (( ${#status_str} )); then
|
||
|
|
_headline_part JOINT "$HEADLINE_STATUS_END" right
|
||
|
|
_headline_part STATUS "$HEADLINE_STATUS_PREFIX$status_str" right
|
||
|
|
_headline_part JOINT "$HEADLINE_BRANCH_TO_STATUS" right
|
||
|
|
if (( $_HEADLINE_LEN_REMAIN < ${#HEADLINE_PAD_TO_BRANCH} + ${#HEADLINE_BRANCH_PREFIX} + ${#HEADLINE_TRUNC_PREFIX} )); then
|
||
|
|
user_str=''; host_str=''; path_str=''; branch_str=''
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Git branch
|
||
|
|
local len=$(( $_HEADLINE_LEN_REMAIN - ${#HEADLINE_BRANCH_PREFIX} ))
|
||
|
|
if (( ${#branch_str} )); then
|
||
|
|
if (( $len < ${#HEADLINE_PATH_PREFIX} + ${#HEADLINE_TRUNC_PREFIX} + ${#HEADLINE_PATH_TO_BRANCH} + ${#branch_str} )); then
|
||
|
|
path_str=''
|
||
|
|
fi
|
||
|
|
if (( ${#path_str} )); then
|
||
|
|
len=$(( $len - ${#HEADLINE_PATH_PREFIX} - ${#HEADLINE_PATH_TO_BRANCH} ))
|
||
|
|
else
|
||
|
|
len=$(( $len - ${#HEADLINE_PAD_TO_BRANCH} ))
|
||
|
|
fi
|
||
|
|
_headline_part BRANCH "$HEADLINE_BRANCH_PREFIX%$len<$HEADLINE_TRUNC_PREFIX<$branch_str%<<" right
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Trimming
|
||
|
|
local joint_len=$(( ${#HEADLINE_USER_BEGIN} + ${#HEADLINE_USER_TO_HOST} + ${#HEADLINE_HOST_TO_PATH} + ${#HEADLINE_PATH_TO_BRANCH} ))
|
||
|
|
local path_min_len=$(( ${#path_str} + ${#HEADLINE_PATH_PREFIX} > 25 ? 25 : ${#path_str} + ${#HEADLINE_PATH_PREFIX} ))
|
||
|
|
len=$(( $_HEADLINE_LEN_REMAIN - $path_min_len - $joint_len ))
|
||
|
|
if (( $len < 2 )); then
|
||
|
|
user_str=''; host_str=''
|
||
|
|
elif (( $len < ${#user_str} + ${#host_str} )); then
|
||
|
|
user_str="${user_str:0:1}"
|
||
|
|
host_str="${host_str:0:1}"
|
||
|
|
fi
|
||
|
|
|
||
|
|
# User
|
||
|
|
if (( ${#user_str} )); then
|
||
|
|
_headline_part JOINT "$HEADLINE_USER_BEGIN" left
|
||
|
|
_headline_part USER "$HEADLINE_USER_PREFIX$user_str" left
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Host
|
||
|
|
if (( ${#host_str} )); then
|
||
|
|
if (( ${#_HEADLINE_INFO_LEFT} )); then
|
||
|
|
_headline_part JOINT "$HEADLINE_USER_TO_HOST" left
|
||
|
|
fi
|
||
|
|
_headline_part HOST "$HEADLINE_HOST_PREFIX$host_str" left
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Path
|
||
|
|
if (( ${#path_str} )); then
|
||
|
|
if (( ${#_HEADLINE_INFO_LEFT} )); then
|
||
|
|
_headline_part JOINT "$HEADLINE_HOST_TO_PATH" left
|
||
|
|
fi
|
||
|
|
len=$(( $_HEADLINE_LEN_REMAIN - ${#HEADLINE_PATH_PREFIX} - ( ${#branch_str} ? ${#HEADLINE_PATH_TO_BRANCH} : 0 ) ))
|
||
|
|
_headline_part PATH "$HEADLINE_PATH_PREFIX%$len<$HEADLINE_TRUNC_PREFIX<$path_str%<<" left
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Padding
|
||
|
|
if (( ${#branch_str} && ${#path_str} && $_HEADLINE_LEN_REMAIN <= ${#HEADLINE_PATH_TO_BRANCH} )); then
|
||
|
|
_headline_part JOINT "$HEADLINE_PATH_TO_BRANCH" left
|
||
|
|
else
|
||
|
|
if (( ${#branch_str} )); then
|
||
|
|
_headline_part JOINT "$HEADLINE_PAD_TO_BRANCH" right
|
||
|
|
fi
|
||
|
|
_headline_part JOINT "$HEADLINE_PATH_TO_PAD" left
|
||
|
|
_headline_part JOINT "$(headline_repeat_char $HEADLINE_PAD_CHAR $_HEADLINE_LEN_REMAIN)" left
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Error line
|
||
|
|
if [[ $HEADLINE_DO_ERR == 'true' ]] && (( $err )); then
|
||
|
|
local meaning msg
|
||
|
|
if [[ $HEADLINE_DO_ERR_INFO == 'true' ]]; then
|
||
|
|
meaning=$(headline_exit_meaning $err)
|
||
|
|
(( ${#meaning} )) && msg=" ($meaning)"
|
||
|
|
fi
|
||
|
|
print -rP "$HEADLINE_STYLE_ERR$HEADLINE_ERR_PREFIX$err$msg"
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Separator line
|
||
|
|
_HEADLINE_LINE_OUTPUT="$_HEADLINE_LINE_LEFT$_HEADLINE_LINE_RIGHT$reset"
|
||
|
|
if [[ $HEADLINE_LINE_MODE == 'on' || ($HEADLINE_LINE_MODE == 'auto' && $_HEADLINE_DO_SEP == 'true' ) ]]; then
|
||
|
|
print -rP $_HEADLINE_LINE_OUTPUT
|
||
|
|
fi
|
||
|
|
_HEADLINE_DO_SEP='true'
|
||
|
|
|
||
|
|
# Information line
|
||
|
|
_HEADLINE_INFO_OUTPUT="$_HEADLINE_INFO_LEFT$_HEADLINE_INFO_RIGHT$reset"
|
||
|
|
|
||
|
|
# Prompt
|
||
|
|
if [[ $HEADLINE_INFO_MODE == 'precmd' ]]; then
|
||
|
|
print -rP $_HEADLINE_INFO_OUTPUT
|
||
|
|
PROMPT=$HEADLINE_PROMPT
|
||
|
|
else
|
||
|
|
PROMPT='$(print -rP $_HEADLINE_INFO_OUTPUT; print -rP $HEADLINE_PROMPT)'
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Right prompt
|
||
|
|
if [[ $HEADLINE_DO_CLOCK == 'true' ]]; then
|
||
|
|
RPROMPT='%{$HEADLINE_STYLE_CLOCK%}$(date +$HEADLINE_CLOCK_FORMAT)%{$reset%}$HEADLINE_RPROMPT'
|
||
|
|
else
|
||
|
|
RPROMPT=$HEADLINE_RPROMPT
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
# Create a part of the prompt
|
||
|
|
_headline_part() { # (name, content, side)
|
||
|
|
local style info info_len line
|
||
|
|
eval style="\$reset\$HEADLINE_STYLE_DEFAULT\$HEADLINE_STYLE_${1}"
|
||
|
|
info="%{$style%}$2"
|
||
|
|
info_len=$(headline_prompt_len $info 9999)
|
||
|
|
_HEADLINE_LEN_REMAIN=$(( $_HEADLINE_LEN_REMAIN - $info_len ))
|
||
|
|
eval style="\$reset\$HEADLINE_STYLE_${1}_LINE"
|
||
|
|
line="%{$style%}$(headline_repeat_char $HEADLINE_LINE_CHAR $info_len)"
|
||
|
|
if [[ $3 == 'right' ]]; then
|
||
|
|
_HEADLINE_INFO_RIGHT="$info$_HEADLINE_INFO_RIGHT"
|
||
|
|
_HEADLINE_LINE_RIGHT="$line$_HEADLINE_LINE_RIGHT"
|
||
|
|
else
|
||
|
|
_HEADLINE_INFO_LEFT="$_HEADLINE_INFO_LEFT$info"
|
||
|
|
_HEADLINE_LINE_LEFT="$_HEADLINE_LINE_LEFT$line"
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
HEADLINE_USER_BEGIN='--'
|
||
|
|
HEADLINE_USER_TO_HOST='-'
|
||
|
|
HEADLINE_HOST_TO_PATH='-'
|
||
|
|
HEADLINE_PATH_TO_BRANCH='-'
|
||
|
|
HEADLINE_PAD_TO_BRANCH='-'
|
||
|
|
HEADLINE_BRANCH_TO_STATUS='-'
|
||
|
|
HEADLINE_STATUS_END='--'
|
||
|
|
HEADLINE_PAD_CHAR='-'
|
||
|
|
HEADLINE_TRUNC_PREFIX='…'
|
||
|
|
HEADLINE_LINE_MODE=off
|
||
|
|
HEADLINE_DO_CLOCK=true
|