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|
##
## zsh prompt themes extension
## by Adam Spiers <adam@spiers.net>
##
## Load with `autoload -U promptinit; promptinit'.
## Type `prompt -h' for help.
##
prompt_themes=()
typeset -gU prompt_themes
typeset -g prompt_theme
promptinit () {
emulate -L zsh
setopt extendedglob
local ppath='' name
# Autoload all prompt_*_setup functions in fpath
for theme in $^fpath/prompt_*_setup(N); do
if [[ $theme == */prompt_(#b)(*)_setup ]]; then
name="$match[1]"
if [[ -r "$theme" ]]; then
prompt_themes=($name $prompt_themes)
autoload -U prompt_${name}_setup
else
print "Couldn't read file $theme containing theme $name."
fi
else
print "Eh? Mismatch between glob patterns in promptinit."
fi
done
# Color definitions come in handy
autoload -U colors
colors
# Variables common to all prompt styles
prompt_newline=$'\n%{\r%}'
}
set_prompt() {
emulate -L zsh
local opt preview theme usage old_theme
usage='Usage: prompt <options>
Options:
-c Show currently selected theme and parameters
-l List currently available prompt themes
-p [<themes>] Preview given themes (defaults to all)
-h [<theme>] Display help (for given theme)
-s <theme> Set and save theme
<theme> Switch to new theme immediately (changes not saved)
Use prompt -h <theme> for help on specific themes.'
getopts "chlps" opt
case "$opt" in
c) if (( $+prompt_theme )); then
print -n "Current prompt theme"
(( $#prompt_theme > 1 )) && print -n " with parameters"
print " is:\n $prompt_theme"
else
print "Current prompt is not a theme."
fi
return
;;
h) if [[ -n "$2" && -n $prompt_themes[(r)$2] ]]; then
if functions prompt_$2_help >/dev/null; then
print "Help for $2 theme:\n"
prompt_$2_help
else
print "No help available for $2 theme."
fi
print "\nType \`prompt -p $2' to preview the theme, \`prompt $2'"
print "to try it out, and \`prompt -s $2' to use it in future sessions."
else
print "$usage"
fi
;;
l) print Currently available prompt themes:
print $prompt_themes
return
;;
p) if (( ! $+prompt_theme )); then
print "Cannot preview; current prompt is non-themeable and would"
print "be destroyed."
return
fi
preview=( $prompt_themes )
(( $#* > 1 )) && preview=( "$@[2,-1]" )
for theme in $preview; do
theme_args=( "$=theme" )
[[ "$theme" == "$prompt_theme[*]" ]] && continue
if [[ -z "$prompt_themes[(r)$theme_args[1]]" ]]; then
print "\nUnknown theme: $theme_args[1]"
continue
fi
print
# The next line is a bit ugly. It (perhaps unnecessarily)
# runs the prompt theme setup function to ensure that if
# the theme has a _preview function that it's been autoloaded.
prompt_${theme_args[1]}_setup
if functions prompt_${theme_args[1]}_preview >&/dev/null; then
prompt_${theme_args[1]}_preview "${(@)theme_args[2,-1]}"
else
prompt_preview_theme "${(@)theme_args}"
fi
done
print
prompt_${prompt_theme[1]}_setup "${(@)prompt_theme[2,-1]}"
;;
s) print "Set and save not yet implemented. Please ensure your ~/.zshrc"
print "contains something similar to the following:\n"
print " autoload -U promptinit"
print " promptinit"
print " prompt $*[2,-1]"
;;
*) if [[ "$1" == 'random' ]]; then
local random_themes
if (( $#* == 1 )); then
random_themes=( $prompt_themes )
else
random_themes=( "$@[2,-1]" )
fi
local i=$(( ( $RANDOM % $#random_themes ) + 1 ))
argv=( "${=random_themes[$i]}" )
fi
if [[ -z "$1" || -z $prompt_themes[(r)$1] ]]; then
print "$usage"
return
fi
prompt_$1_setup "$@[2,-1]"
prompt_theme=( "$@" )
# Avoid screwing up the environment listing
PSZZZZ=$reset_color
RPSZZZZ=$reset_color
PROMPTZZZZ=$reset_color
RPROMPTZZZZ=$reset_color
promptzzzz=$reset_color
;;
esac
}
prompt () {
local prompt_opts
set_prompt "$@"
(( $#prompt_opts )) &&
setopt noprompt{bang,cr,percent,subst} prompt${^prompt_opts[@]}
}
prompt_preview_theme () {
print -n "$1 theme"
(( $#* > 1 )) && print -n " with parameters \`$*[2,-1]'"
print ":"
prompt_${1}_setup "$@[2,-1]"
precmd
print -n -P "${PS1}"
preexec
print "command arg1 arg2 ... argn"
}
promptinit "$@"
|
