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[file sh=mycolorize-r.sh] #!/bin/bash # # Simple colorize for bash by means of sed # # Copyright 2008-2015 by Andreas Schamanek andreas@schamanek.net # GPL licensed (see end of file) * Use at your own risk! # # Usage examples: # tail -f somemaillog | mycolorize white '^From: .*' bell # tail -f somemaillog | mycolorize white '^From: \/.*' green 'Folder: .*' # tail -f somemaillog | mycolorize –unbuffered white '^From: .*' # # Notes: # Regular expressions need to be suitable for _sed –regexp-extended_ # Slashes / need no escaping (we use ^A as delimiter). # \/ splits the coloring (similar to procmailrc. Matches behind get color. # Even „white '(for|to) \/(her|him).*$'” works :) Surprisingly ;) # To color the string '\/' use the regular expression '\\()/'. # If the 1st argument is -u or –unbuffered, _sed_ will be run so.

# For the colors see tput(1) and terminfo(5), or e.g. # https://wiki.archlinux.org/index.php/Color_Bash_Prompt # and http://stackoverflow.com/a/20983251/196133

bold=$(tput bold) # make colors bold/bright #normal=$(tput sgr0) # normal text normal=$'\e[0m' # (works better sometimes)

red=„$bold$(tput setaf 1)” # bright red text green=$(tput setaf 2) # dim green text fawn=$(tput setaf 3); beige=„$fawn” # dark yellow text yellow=„$bold$fawn” # bright yellow text darkblue=$(tput setaf 4) # dim blue text blue=„$bold$darkblue” # bright blue text purple=$(tput setaf 5); magenta=„$purple” # magenta text pink=„$bold$purple” # bright magenta text darkcyan=$(tput setaf 6) # dim cyan text cyan=„$bold$darkcyan” # bright cyan text gray=$(tput setaf 7) # dim white text darkgray=„$bold”$(tput setaf 0) # bold black = dark gray text white=„$bold$gray” # bright white text

bell=$(tput bel) # bell/beep

# Make output unbuffered? (Pass argument -u|–unbuffered to _sed_.) if [ „/$1/” = '/-u/' -o „/$1/” = '/–unbuffered/' ] ; then

 UNBUFFERED='-u'; shift

else

 UNBUFFERED=""

fi

# produce separator character ^A (for _sed_) A=$(echo | tr '\012' '\001')

# compile all rules given at command line to 1 set of rules for SED while [ „/$1/” != '' ] ; do c1=; re=; beep='' c1=$1 ; re=„$2” ; shift 2 || break # if a beep is requested in the optional 3rd parameter set $beep [ „/$1/” != '' ] && | "$1" = 'beep' ) \

  && beep=$bell && shift
# if the regular expression includes \/ we split the substitution
if [ "/${re/*\\\/*/}/" = '//' ] ; then
   # we need to count "("s before the \/ (=$left)
   left="${re%\\/*}"; leftlength=${#left}
   # first we count "\("
   dummy=${left//\\(}; escdgroups=$(( (leftlength-${#dummy})/2 ))
   # now "(" (and we add 2 for the groups used for ($re) in $sedrules)
   dummy=${left//(}; groupcnt=$((leftlength-${#dummy}-escdgroups+2))
   # replace \/ with )( so below we get (left-re)(right-re)
   re="${re/\\\//)(}"
   sedrules="$sedrules;s$A($re)$A\1${!c1}\\$groupcnt$beep$normal${A}g"
else
   sedrules="$sedrules;s$A($re)$A${!c1}\1$beep$normal${A}g"
fi
# limit parsing of arguments
(( y++ && y>888 )) && { echo "$0: too many arguments" >&2; exit 1; }

done

# call sed to do the main job sed $UNBUFFERED –regexp-extended -e „$sedrules”

exit

# License # # This script is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This script is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this script; if not, write to the # Free Software Foundation, Inc., 59 Temple Place, Suite 330, # Boston, MA 02111-1307 USA [/file]