X-Git-Url: http://git.iain.cx/?p=profile.git;a=blobdiff_plain;f=.profile.d%2Fps1.bashrc;h=1d6c22b44a89f46232a09d8bca84a23baccac40e;hp=bb05253684a0845ad8b40ad61b2fc739f8f7c1bc;hb=1ec94025a15c0e0fecfdc27e3bfd51f1e52d642f;hpb=948d7186089b915704df2f0b0f48fd8508db077b diff --git a/.profile.d/ps1.bashrc b/.profile.d/ps1.bashrc index bb05253..1d6c22b 100644 --- a/.profile.d/ps1.bashrc +++ b/.profile.d/ps1.bashrc @@ -1,30 +1,190 @@ -# $Id$ -# VERSION 1.3 (2005-08-15) +#!bash Coloured prompts. +# profile-required: TERM.bashrc # -# Coloured prompts for bash. +# The prompt comprises multiple parts, some of which may be hidden by unsetting +# shell variables or using the ``prompt'' function. # -# Prompt is user@host:/dir$ where host is highlighted in green if the last -# command exited 0 or in red (followed by the error code) otherwise. +# The first part of the prompt is user@host where host is highlighted in +# green if the last command exited 0 or in red otherwise. +# This part will be shown only if __ps1_user is 1. By default it is 1. +# The success and failure colours can be changed by modifying +# $PROMPT_OK_COLOUR and $PROMPT_FAILED_COLOUR respectively. # -# Override the PROMPT_OK_COLOUR and PROMPT_FAILED_COLOUR environment variables -# to set different colours. +# The second part of the prompt is taken from git-completion.bashrc. +# It is shown only if __ps1_git is 1. By default it is 0. +# +# The third part of the prompt is taken from p4-completion.bashrc. +# It is shown only if __ps1_p4 is 1. By default it is 0. +# +# The fourth part of the prompt is taken from svn-completion.bashrc. +# It is shown only if __ps1_svn is 1. By default it is 0. +# +# The fifth part of the prompt is the exit status of the last command. +# This part will be shown only if __ps1_user is set and the exit status is +# non-zero. +# +# The final part of the prompt is the (full) working directory and $ string. +# If the shell is running as root the # string's colour can be changed by +# modifying $ROOT_OK_COLOUR and $ROOT_FAILED_COLOUR. +# +# Colouring is performed by the __ps1_col() and __ps1_ret() functions. +# We redirect stderr to /dev/null when calling these functions to prevent +# bash complaining about not knowing them when you su to another user, +# retaining PS1 but not the function definitions. +# +# Note that $? is passed as an argument to - and is returned from - all +# functions. As $? is set following any shell activity it is only guaranteed +# to represent the return code of the last command at the beginning of __ps1(). +# By passing between subsequent functions we ensure that it is available for +# __ps1_ret(). # -# To use, add a call to __ps1 in your .bash_profile. -export PROMPT_OK_COLOUR=${PROMPT_OK_COLOUR:-32} -export PROMPT_FAILED_COLOUR=${PROMPT_OK_COLOUR:-31} +# Pick a colour based on the terminal capabilities. +# OK: dark green. +# Failed: dark red. +# Git: royal blue. +# P4: yellow. +# SVN: magenta. +case $(tput colors) in + 256) + PROMPT_OK_COLOUR="1;38;5;34" + PROMPT_FAILED_COLOUR="1;38;5;160" + ROOT_OK_COLOUR="0" + ROOT_FAILED_COLOUR="0" + GIT_COLOUR="0;38;5;33" + SVN_COLOUR="0;38;5;127" + P4_COLOUR="0;38;5;142" + ;; + + 88) + PROMPT_OK_COLOUR="1;38;5;24" + PROMPT_FAILED_COLOUR="1;38;5;48" + ROOT_OK_COLOUR="0" + ROOT_FAILED_COLOUR="0" + GIT_COLOUR="0;38;5;23" + SVN_COLOUR="0;38;5;49" + P4_COLOUR="0;38;5;56" + ;; + + *) + PROMPT_OK_COLOUR="1;32" + PROMPT_FAILED_COLOUR="1;31" + ROOT_OK_COLOUR="0" + ROOT_FAILED_COLOUR="0" + GIT_COLOUR="0;36" + SVN_COLOUR="0;35" + P4_COLOUR="0;33" + ;; +esac function __ps1() { - export PS1='\u@\[\033[1;$(__ps1_col $?)m\]\h\[\033[0m\]$(__ps1_ret $?):\w\$ ' + # Default __ps1_user to 1. + [ -z "$__ps1_user" ] && __ps1_user=1 + + PS1='$(__ps1_user $? \u@)\[\033[$(__ps1_col $? 2>/dev/null)m\]$(__ps1_user $? \h)\[\033[$(__ps1_colour_escape $? $GIT_COLOUR)m\]$(__ps1_git $? 2>/dev/null)\[\033[0m\]\[\033[$(__ps1_colour_escape $? $P4_COLOUR)m\]$(__ps1_p4 $? 2>/dev/null)\[\033[0m\]\[\033[$(__ps1_colour_escape $? $SVN_COLOUR)m\]$(__ps1_svn $? 2>/dev/null)\[\033[0m\]$(__ps1_ret $? 2>/dev/null)$(__ps1_colon $?)\w\[\033[$(__ps1_root $? 2>/dev/null)m\]\$\[\033[0m\] ' return 0 } +# iTerm doesn't like it if you set bold and colour at the same time. +function __ps1_colour_escape() { + local ret=$1; shift + local bold="${1%%;*}" + local colour="${1#*;}" + + echo -en "${bold}m\033[$colour" + return $ret +} + function __ps1_col() { - [ $1 -gt 0 ] && echo -n "$PROMPT_FAILED_COLOUR" || echo -n "$PROMPT_OK_COLOUR" - return $1 + local ret=$1; shift + if [ $ret -gt 0 ]; then + __ps1_colour_escape $ret "$PROMPT_FAILED_COLOUR" + else + __ps1_colour_escape $ret "$PROMPT_OK_COLOUR" + fi + return $ret +} + +function __ps1_root() { + local ret=$1; shift + if [ $ret -gt 0 ]; then + __ps1_colour_escape $ret "$ROOT_FAILED_COLOUR" + else + __ps1_colour_escape $ret "$ROOT_OK_COLOUR" + fi + return $ret } function __ps1_ret() { + [ "$__ps1_user" = "1" ] || return $1 [ $1 -gt 0 ] && echo -n " ($1)" - return 0 + return $1 +} + +function __ps1_user() { + local ret=$1; shift + [ "$__ps1_user" = "1" ] || return $ret + echo -n ${1+"$@"} + return $ret } + +function __ps1_git() { + [ "$__ps1_git" = "1" ] || return $1 + if [ "$__ps1_user" = "1" ]; then + __git_ps1 ' %s' + else + __git_ps1 '%s' + fi + return $1 +} + +function __ps1_p4() { + [ "$__ps1_p4" = "1" ] || return $1 + if [ "$__ps1_user" = "1" -o "$__ps1_git" = "1" ]; then + __p4_ps1 ' %s' + else + __p4_ps1 '%s' + fi + return $1 +} + +function __ps1_svn() { + [ "$__ps1_svn" = "1" ] || return $1 + if [ "$__ps1_user" = "1" -o "$__ps1_git" = "1" -o "$__ps1_p4" = "1" ]; then + __svn_ps1 ' %s' + else + __svn_ps1 '%s' + fi + return $1 +} + +function __ps1_colon() { + local all="$__ps1_user$__ps1_git$__ps1_p4$__ps1_svn" + [ "${all/1/}" = "$all" ] || echo -n ":" + return $1 +} + +function prompt() { + local blurb="Usage: prompt hide|show " + + if [ $# -lt 2 ]; then + echo >&2 "$blurb" + return 1 + fi + + action="$1" + if [ ! "$action" = "hide" -a ! "$action" = "show" ]; then + echo >&2 "$blurb" + return 1 + fi + if [ "$action" = "hide" ]; then + action=0 + else + action=1 + fi + + what="$(echo $2 | env LANG= LC_ALL= LC_CTYPE= tr '[:upper:]' '[:lower:]')" + eval __ps1_$what=$action +} + +__ps1