colors.theme.bash: pre-compute colors
bash-it takes rather a while to startup, around 0.5 seconds on my
laptop. After a bit of timing it appears the majority of the time is
spent in themes/colors.theme.bash. The reason for that is the fancy
abstraction layers that use $(). For example, consider this code:
red="$(color reset red)"
It will go through 9 forkexecs to evaluate:
red="$(color reset red)"
"$(__color_parse make_ansi reset red)"
"$(__make_ansi reset red)"
"\[\e[$(__reset red)m\]"
"\[\e[0;$(__red)m\]"
"\[\e[0;$(__color red)m\]"
"\[\e[0;$(__color_normal_fg $(__color_red))m\]"
"\[\e[0;$(__color_normal_fg 1)m\]"
"\[\e[0;31m\]"
With all the variables in colors.theme.bash, this adds up to hundreds of
forks:
$ strace -f bash ./colors.theme.bash 2>&1 | grep clone | wc -l
649
The solution is to replace the function with its result:
-red="$(color reset red)"
+red='\[\e[0;31m\]'
This is safe, since colors.theme.bash never calls external functions or
takes any input. So, its result can be safely hard-coded.
This improves startup time dramatically. Try adding "time" to your .bashrc:
# Load Bash It
time source $BASH_IT/bash_it.sh
before:
real 0m0.462s
user 0m0.100s
sys 0m0.399s
after:
real 0m0.150s
user 0m0.091s
sys 0m0.064s
pull/699/head
Brian Malehorn
parent
fd6c5e23c0
commit
2a3fde2b14
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@ -182,89 +182,89 @@ function echo_color {
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}
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black="$(color reset black)"
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red="$(color reset red)"
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green="$(color reset green)"
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yellow="$(color reset yellow)"
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blue="$(color reset blue)"
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purple="$(color reset magenta)"
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cyan="$(color reset cyan)"
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white="$(color reset white bold)"
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orange="$(color reset red fg bright)"
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black="\[\e[0;30m\]"
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red="\[\e[0;31m\]"
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green="\[\e[0;32m\]"
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yellow="\[\e[0;33m\]"
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blue="\[\e[0;34m\]"
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purple="\[\e[0;35m\]"
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cyan="\[\e[0;36m\]"
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white="\[\e[0;37;1m\]"
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orange="\[\e[0;91m\]"
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bold_black="$(color black bold)"
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bold_red="$(color red bold)"
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bold_green="$(color green bold)"
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bold_yellow="$(color yellow bold)"
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bold_blue="$(color blue bold)"
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bold_purple="$(color magenta bold)"
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bold_cyan="$(color cyan bold)"
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bold_white="$(color white bold)"
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bold_orange="$(color red fg bright bold)"
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bold_black="\[\e[30;1m\]"
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bold_red="\[\e[31;1m\]"
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bold_green="\[\e[32;1m\]"
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bold_yellow="\[\e[33;1m\]"
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bold_blue="\[\e[34;1m\]"
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bold_purple="\[\e[35;1m\]"
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bold_cyan="\[\e[36;1m\]"
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bold_white="\[\e[37;1m\]"
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bold_orange="\[\e[91;1m\]"
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underline_black="$(color black underline)"
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underline_red="$(color red underline)"
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underline_green="$(color green underline)"
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underline_yellow="$(color yellow underline)"
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underline_blue="$(color blue underline)"
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underline_purple="$(color magenta underline)"
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underline_cyan="$(color cyan underline)"
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underline_white="$(color white underline)"
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underline_orange="$(color red fg bright underline)"
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underline_black="\[\e[30;4m\]"
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underline_red="\[\e[31;4m\]"
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underline_green="\[\e[32;4m\]"
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underline_yellow="\[\e[33;4m\]"
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underline_blue="\[\e[34;4m\]"
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underline_purple="\[\e[35;4m\]"
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underline_cyan="\[\e[36;4m\]"
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underline_white="\[\e[37;4m\]"
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underline_orange="\[\e[91;4m\]"
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background_black="$(color black bg)"
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background_red="$(color red bg)"
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background_green="$(color green bg)"
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background_yellow="$(color yellow bg)"
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background_blue="$(color blue bg)"
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background_purple="$(color magenta bg)"
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background_cyan="$(color cyan bg)"
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background_white="$(color white bg bold)"
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background_orange="$(color red bg bright)"
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background_black="\[\e[40m\]"
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background_red="\[\e[41m\]"
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background_green="\[\e[42m\]"
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background_yellow="\[\e[43m\]"
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background_blue="\[\e[44m\]"
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background_purple="\[\e[45m\]"
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background_cyan="\[\e[46m\]"
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background_white="\[\e[47;1m\]"
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background_orange="\[\e[101m\]"
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normal="$(color reset)"
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reset_color="$(__make_ansi '' 39)"
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normal="\[\e[0m\]"
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reset_color="\[\e[39m\]"
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# These colors are meant to be used with `echo -e`
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echo_black="$(echo_color reset black)"
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echo_red="$(echo_color reset red)"
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echo_green="$(echo_color reset green)"
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echo_yellow="$(echo_color reset yellow)"
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echo_blue="$(echo_color reset blue)"
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echo_purple="$(echo_color reset magenta)"
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echo_cyan="$(echo_color reset cyan)"
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echo_white="$(echo_color reset white bold)"
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echo_orange="$(echo_color reset red fg bright)"
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echo_black="\033[0;30m"
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echo_red="\033[0;31m"
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echo_green="\033[0;32m"
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echo_yellow="\033[0;33m"
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echo_blue="\033[0;34m"
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echo_purple="\033[0;35m"
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echo_cyan="\033[0;36m"
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echo_white="\033[0;37;1m"
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echo_orange="\033[0;91m"
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echo_bold_black="$(echo_color black bold)"
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echo_bold_red="$(echo_color red bold)"
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echo_bold_green="$(echo_color green bold)"
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echo_bold_yellow="$(echo_color yellow bold)"
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echo_bold_blue="$(echo_color blue bold)"
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echo_bold_purple="$(echo_color magenta bold)"
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echo_bold_cyan="$(echo_color cyan bold)"
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echo_bold_white="$(echo_color white bold)"
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echo_bold_orange="$(echo_color red fg bright bold)"
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echo_bold_black="\033[30;1m"
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echo_bold_red="\033[31;1m"
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echo_bold_green="\033[32;1m"
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echo_bold_yellow="\033[33;1m"
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echo_bold_blue="\033[34;1m"
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echo_bold_purple="\033[35;1m"
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echo_bold_cyan="\033[36;1m"
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echo_bold_white="\033[37;1m"
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echo_bold_orange="\033[91;1m"
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echo_underline_black="$(echo_color black underline)"
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echo_underline_red="$(echo_color red underline)"
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echo_underline_green="$(echo_color green underline)"
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echo_underline_yellow="$(echo_color yellow underline)"
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echo_underline_blue="$(echo_color blue underline)"
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echo_underline_purple="$(echo_color magenta underline)"
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echo_underline_cyan="$(echo_color cyan underline)"
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echo_underline_white="$(echo_color white underline)"
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echo_underline_orange="$(echo_color red fg bright underline)"
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echo_underline_black="\033[30;4m"
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echo_underline_red="\033[31;4m"
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echo_underline_green="\033[32;4m"
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echo_underline_yellow="\033[33;4m"
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echo_underline_blue="\033[34;4m"
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echo_underline_purple="\033[35;4m"
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echo_underline_cyan="\033[36;4m"
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echo_underline_white="\033[37;4m"
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echo_underline_orange="\033[91;4m"
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echo_background_black="$(echo_color black bg)"
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echo_background_red="$(echo_color red bg)"
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echo_background_green="$(echo_color green bg)"
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echo_background_yellow="$(echo_color yellow bg)"
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echo_background_blue="$(echo_color blue bg)"
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echo_background_purple="$(echo_color magenta bg)"
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echo_background_cyan="$(echo_color cyan bg)"
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echo_background_white="$(echo_color white bg bold)"
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echo_background_orange="$(echo_color red bg bright)"
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echo_background_black="\033[40m"
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echo_background_red="\033[41m"
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echo_background_green="\033[42m"
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echo_background_yellow="\033[43m"
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echo_background_blue="\033[44m"
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echo_background_purple="\033[45m"
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echo_background_cyan="\033[46m"
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echo_background_white="\033[47;1m"
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echo_background_orange="\033[101m"
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echo_normal="$(echo_color reset)"
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echo_reset_color="$(__make_echo '' 39)"
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echo_normal="\033[0m"
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echo_reset_color="\033[39m"
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Loading…
Reference in New Issue