100 lines
2.3 KiB
Bash
Executable File
100 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
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function usage {
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echo -e ' High Beam Highlighter
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- a trial to create a very generic modifyable
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syntax highlighter.
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Example rules: ( ~/.highbeamrc )
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--------------------
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RULES=(
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"[0-9]" "$C" # Show numbers with Cyan color. NOTE: since the colors are represented with numbers, having this later in the rules will break coloring!
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"$USER[ ]\+$USER" "$BGC$BLACK" # Use quotes to have rules with spaces. This colors the "ls -la" usernames. background cyan, black text
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status "$G" # simple word matching, coloring green
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"^d[^ ]*" "$H$G" # color words at the beginning of line, starting with d. color bright green
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"q.\{0,3\}r" "$H$Y" # q*r with maximum 3 characters in between. color bright yellow
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)
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--------------------
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Color variables: $R $G $B $Y $M $C $W $BLACK
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Modify to bright version by prefixing with $H (e.g. $H$G)
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Background colors: $BGR $BGG $BGB $BGY $BGC $BGM $BGW
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Usage: highbeam [-c] [-h] [-f config]
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-c Be case sensitive
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-h Help
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-f Define config file (default ~/.highbeamrc)
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-r Define rules with a string, replaces the other rules
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-r '\''"land[^[:space:]]\+" "$G" "sky" "$B"'\''
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'
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}
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E='\x1b['
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H="${E}1m"
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Z="${E}0m"
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# list of text colors:
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BLACK="${E}30m"
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R="${E}31m"
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G="${E}32m"
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B="${E}34m"
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Y="${E}33m"
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M="${E}35m"
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C="${E}36m"
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W="${E}37m"
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# list of BG colors:
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BGR="${E}41m"
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BGG="${E}42m"
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BGB="${E}44m"
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BGY="${E}43m"
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BGM="${E}45m"
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BGC="${E}46m"
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BGW="${E}47m"
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CONF_FILE=~/.highbeamrc
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CONF_LINE=""
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FLAGS="ig"
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while getopts chf:r: opt
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do case "$opt" in
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c)
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FLAGS="g"
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;;
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h)
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usage
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exit
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;;
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f)
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CONF_FILE=$OPTARG
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;;
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r)
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CONF_LINE=( $( eval echo $OPTARG ) )
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;;
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esac
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done
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[[ -z "$CONF_LINE" ]] && {
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# user rules:
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[[ -e "${CONF_FILE}" ]] && . "${CONF_FILE}" || {
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echo You may have wrong format in "${CONF_FILE}" >&2
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usage >&2
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exit 1
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}
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for (( r=0; r<${#RULES[@]}; r++ ));
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do REGEX="$REGEX -e 's/\(${RULES[$r]}\)/${RULES[$(( $r + 1 ))]}\1${Z}/${FLAGS}'"
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r=$(( $r + 1 ))
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done
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} || {
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# string fed rules
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for (( r=0; r<${#CONF_LINE[@]}; r++ ));
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do REGEX="$REGEX -e 's/\(${CONF_LINE[$r]}\)/${CONF_LINE[$(( $r + 1 ))]}\1${Z}/${FLAGS}'"
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r=$(( $r + 1 ))
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done
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}
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eval sed $REGEX || echo Maybe errors in your rules: "$REGEX" >&2
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