1 #!bash Coloured prompts.
3 # The prompt comprises multiple parts, some of which may be hidden by unsetting
4 # shell variables or using the ``prompt'' function.
6 # The first part of the prompt is user@host where host is highlighted in
7 # green if the last command exited 0 or in red otherwise.
8 # This part will be shown only if __ps1_user is 1. By default it is 1.
9 # The success and failure colours can be changed by modifying
10 # $PROMPT_OK_COLOUR and $PROMPT_FAILED_COLOUR respectively.
12 # The second part of the prompt is taken from git-completion.bashrc.
13 # It is shown only if __ps1_git is 1. By default it is 0.
15 # The third part of the prompt is taken from p4-completion.bashrc.
16 # It is shown only if __ps1_p4 is 1. By default it is 0.
18 # The fourth part of the prompt is taken from svn-completion.bashrc.
19 # It is shown only if __ps1_svn is 1. By default it is 0.
21 # The fifth part of the prompt is the exit status of the last command.
22 # This part will be shown only if __ps1_user is set and the exit status is
25 # The final part of the prompt is the (full) working directory and $ string.
26 # If the shell is running as root the # string's colour can be changed by
27 # modifying $ROOT_OK_COLOUR and $ROOT_FAILED_COLOUR.
29 # Colouring is performed by the __ps1_col() and __ps1_ret() functions.
30 # We redirect stderr to /dev/null when calling these functions to prevent
31 # bash complaining about not knowing them when you su to another user,
32 # retaining PS1 but not the function definitions.
34 # Note that $? is passed as an argument to - and is returned from - all
35 # functions. As $? is set following any shell activity it is only guaranteed
36 # to represent the return code of the last command at the beginning of __ps1().
37 # By passing between subsequent functions we ensure that it is available for
41 # Pick a colour based on the terminal capabilities.
47 case $(tput colors) in
49 PROMPT_OK_COLOUR="1;38;5;34"
50 PROMPT_FAILED_COLOUR="1;38;5;160"
52 ROOT_FAILED_COLOUR="0"
53 GIT_COLOUR="0;38;5;33"
54 SVN_COLOUR="0;38;5;127"
55 P4_COLOUR="0;38;5;142"
59 PROMPT_OK_COLOUR="1;38;5;24"
60 PROMPT_FAILED_COLOUR="1;38;5;48"
62 ROOT_FAILED_COLOUR="0"
63 GIT_COLOUR="0;38;5;23"
64 SVN_COLOUR="0;38;5;49"
69 PROMPT_OK_COLOUR="1;32"
70 PROMPT_FAILED_COLOUR="1;31"
72 ROOT_FAILED_COLOUR="0"
80 # Default __ps1_user to 1.
81 [ -z "$__ps1_user" ] && __ps1_user=1
83 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\[\033[$(__ps1_root $? 2>/dev/null)m\]\$\[\033[0m\] '
87 # iTerm doesn't like it if you set bold and colour at the same time.
88 function __ps1_colour_escape() {
91 local colour="${1#*;}"
93 echo -en "${bold}m\033[$colour"
97 function __ps1_col() {
99 if [ $ret -gt 0 ]; then
100 __ps1_colour_escape $ret "$PROMPT_FAILED_COLOUR"
102 __ps1_colour_escape $ret "$PROMPT_OK_COLOUR"
107 function __ps1_root() {
109 if [ $ret -gt 0 ]; then
110 __ps1_colour_escape $ret "$ROOT_FAILED_COLOUR"
112 __ps1_colour_escape $ret "$ROOT_OK_COLOUR"
117 function __ps1_ret() {
118 [ "$__ps1_user" = "1" ] || return $1
119 [ $1 -gt 0 ] && echo -n " ($1)"
123 function __ps1_user() {
125 [ "$__ps1_user" = "1" ] || return $ret
130 function __ps1_git() {
131 [ "$__ps1_git" = "1" ] || return $1
132 if [ "$__ps1_user" = "1" ]; then
140 function __ps1_p4() {
141 [ "$__ps1_p4" = "1" ] || return $1
142 if [ "$__ps1_user" = "1" -o "$__ps1_git" = "1" ]; then
150 function __ps1_svn() {
151 [ "$__ps1_svn" = "1" ] || return $1
152 if [ "$__ps1_user" = "1" -o "$__ps1_git" = "1" -o "$__ps1_p4" = "1" ]; then
160 function __ps1_colon() {
161 local all="$__ps1_user$__ps1_git$__ps1_p4$__ps1_svn"
162 [ "${all/1/}" = "$all" ] || echo -n ":"
167 local blurb="Usage: prompt hide|show <what>"
169 if [ $# -lt 2 ]; then
175 if [ ! "$action" = "hide" -a ! "$action" = "show" ]; then
179 if [ "$action" = "hide" ]; then
185 what="$(echo $2 | env LANG= LC_ALL= LC_CTYPE= tr '[:upper:]' '[:lower:]')"
186 eval __ps1_$what=$action