1 #!bash Coloured prompts.
2 # To use, add a call to __ps1 in your .bash_profile file.
4 # The prompt comprises multiple parts, some of which may be hidden by unsetting
5 # shell variables or using the ``prompt'' function.
7 # The first part of the prompt is user@host where host is highlighted in
8 # green if the last command exited 0 or in red otherwise.
9 # This part will be shown only if __ps1_user is 1. By default it is 1.
10 # The success and failure colours can be changed by modifying
11 # $PROMPT_OK_COLOUR and $PROMPT_FAILURE_COLOUR respectively.
13 # The second part of the prompt is taken from git-completion.bashrc.
14 # It is shown only if __ps1_git is 1. By default it is 0.
16 # The third part of the prompt is taken from p4-completion.bashrc.
17 # It is shown only if __ps1_p4 is 1. By default it is 0.
19 # The fourth part of the prompt is taken from svn-completion.bashrc.
20 # It is shown only if __ps1_svn is 1. By default it is 0.
22 # The fifth part of the prompt is the exit status of the last command.
23 # This part will be shown only if __ps1_user is set and the exit status is
26 # The final part of the prompt is the (full) working directory and $ string.
28 # Colouring is performed by the __ps1_col() and __ps1_ret() functions.
29 # We redirect stderr to /dev/null when calling these functions to prevent
30 # bash complaining about not knowing them when you su to another user,
31 # retaining PS1 but not the function definitions.
33 # Note that $? is passed as an argument to - and is returned from - all
34 # functions. As $? is set following any shell activity it is only guaranteed
35 # to represent the return code of the last command at the beginning of __ps1().
36 # By passing between subsequent functions we ensure that it is available for
40 # Pick a colour based on the terminal capabilities.
46 case $(tput colors) in
48 PROMPT_OK_COLOUR="1;38;5;34"
49 PROMPT_FAILED_COLOUR="1;38;5;160"
50 GIT_COLOUR="0;38;5;33"
51 SVN_COLOUR="0;38;5;127"
52 P4_COLOUR="0;38;5;142"
56 PROMPT_OK_COLOUR="1;38;5;24"
57 PROMPT_FAILED_COLOUR="1;38;5;48"
58 GIT_COLOUR="0;38;5;23"
59 SVN_COLOUR="0;38;5;49"
64 PROMPT_OK_COLOUR="1;32"
65 PROMPT_FAILED_COLOUR="1;31"
73 # Default __ps1_user to 1.
74 [ -z "$__ps1_user" ] && __ps1_user=1
76 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 $? 2>/dev/null):\w\$ '
80 # iTerm doesn't like it if you set bold and colour at the same time.
81 function __ps1_colour_escape() {
84 local colour="${1#*;}"
86 echo -en "${bold}m\033[$colour"
90 function __ps1_col() {
92 if [ $ret -gt 0 ]; then
93 __ps1_colour_escape $ret "$PROMPT_FAILED_COLOUR"
95 __ps1_colour_escape $ret "$PROMPT_OK_COLOUR"
100 function __ps1_ret() {
101 [ "$__ps1_user" = "1" ] || return $1
102 [ $1 -gt 0 ] && echo -n " ($1)"
106 function __ps1_user() {
108 [ "$__ps1_user" = "1" ] || return $ret
113 function __ps1_git() {
114 [ "$__ps1_git" = "1" ] || return $1
115 if [ "$__ps1_user" = "1" ]; then
123 function __ps1_p4() {
124 [ "$__ps1_p4" = "1" ] || return $1
125 if [ "$__ps1_user" = "1" -o "$__ps1_git" = "1" ]; then
133 function __ps1_svn() {
134 [ "$__ps1_svn" = "1" ] || return $1
135 if [ "$__ps1_user" = "1" -o "$__ps1_git" = "1" -o "$__ps1_p4" = "1" ]; then
144 local blurb="Usage: prompt hide|show <what>"
146 if [ $# -lt 2 ]; then
152 if [ ! "$action" = "hide" -a ! "$action" = "show" ]; then
156 if [ "$action" = "hide" ]; then
162 what="$(echo $2 | env LANG= LC_ALL= LC_CTYPE= tr '[:upper:]' '[:lower:]')"
163 eval __ps1_$what=$action