[TUHS] Seeking wisdom from Unix Greybeards
Steffen Nurpmeso
steffen at sdaoden.eu
Wed Nov 25 12:00:48 CST 2020
Grant Taylor wrote in
<9c1595cc-54a1-8af9-0c2d-083cb04dd97c at spamtrap.tnetconsulting.net>:
|Hi,
|
|As I find myself starting yet another project that that wants to use
|ANSI control sequences for colorization of text, I find myself -- yet
|again -- wondering if there is a better way to generate the output from
|the code in a way that respects TERMinal capabilites.
|
|Is there a better / different control sequence that I can ~> should use
|for colorizing / stylizing output that will account for the differences
|in capabilities between a VT100 and XTerm?
|
|Can I wrap things that I output so that I don't send color control
|sequences to a TERMinal that doesn't support them?
color_init() {
[ -n "${NOCOLOUR}" ] && return
[ -n "${MAILX_CC_TEST_NO_COLOUR}" ] && return
# We do not want color for "make test > .LOG"!
if (command -v stty && command -v tput) >/dev/null 2>&1 &&
(<&1 >/dev/null stty -a) 2>/dev/null; then
{ sgr0=`tput sgr0`; } 2>/dev/null
[ $? -eq 0 ] || return
{ saf1=`tput setaf 1`; } 2>/dev/null
[ $? -eq 0 ] || return
{ saf2=`tput setaf 2`; } 2>/dev/null
[ $? -eq 0 ] || return
{ saf3=`tput setaf 3`; } 2>/dev/null
[ $? -eq 0 ] || return
{ b=`tput bold`; } 2>/dev/null
[ $? -eq 0 ] || return
COLOR_ERR_ON=${saf1}${b} COLOR_ERR_OFF=${sgr0}
COLOR_WARN_ON=${saf3}${b} COLOR_WARN_OFF=${sgr0}
COLOR_OK_ON=${saf2} COLOR_OK_OFF=${sgr0}
unset saf1 saf2 saf3 b
fi
}
Is what i use for a make system.
--steffen
|
|Der Kragenbaer, The moon bear,
|der holt sich munter he cheerfully and one by one
|einen nach dem anderen runter wa.ks himself off
|(By Robert Gernhardt)
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