94 lines
3 KiB
Bash
Executable file
94 lines
3 KiB
Bash
Executable file
#!/bin/bash
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# Version: 0.2.0
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# Original awk code found somewhere on LQ - credit to the original author :)
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# Changes copyright (c) 2023:
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# Darren 'Tadgy' Austin <darren (at) afterdark.org.uk>
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# Licensed under the terms of the GNU General Public License version 3.
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#
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# Colourise the Slackware ChangeLog and, optionally, 'watch' it for changes.
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# Best run in a screen or tmux window with activity monitoring turned on, so you get a notification any time the ChangeLog is updated.
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# Defaults.
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CHANGELOG_URL="https://ftp.osuosl.org/pub/slackware/slackware64-current/ChangeLog.txt"
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# CHANGELOG_URL="https://slackware.uk/slackware/slackware64-current/ChangeLog.txt"
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REFRESH_INTERVAL="600"
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MAX_LINES="10000000" # Should cover the whole ChangeLog.
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# Colourise at most MAX_LINES of the ChangeLog.
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colourise_CL() {
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curl -sL "$CHANGELOG_URL" | head -n "$MAX_LINES" | awk '
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/^(Mon|Tue|Wed|Thu|Fri|Sat|Sun) (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)/ {
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print "\033[1;35m"$0"\033[0m"; next
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}
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/^[^: ]+\/[^: ]+:/ {
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status = tolower($2)
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colour = "1;33m"
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if ((index(status, "added") == 1))
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colour = "1;32m"
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else if ((index(status, "removed") == 1))
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colour = "1;31m"
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else if ((index(status, "rebuilt") == 1))
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colour = "1;34m"
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$1 = "\033["colour$1"\033[0m"; print; next
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}
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/^\+---+/ { $0 = "" }{ print }'
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}
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# Parse command line options.
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while (( $# != 0 )); do
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case "$1" in
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-h|-help|--help)
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printf "%s %s %s %s %s\\n" "${0##*/}" "[-l|--lines <max output lines>]" "[-r|--refresh <time in seconds>]" "[-u|--url <URL to ChangeLog>]" "[-w|--watch]"
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printf "%s '%s'. %s '%s' %s. %s '%s'.\\n" "Default -l is" "$MAX_LINES" "Default -r is" "$REFRESH_INTERVAL" "(subject to using -w)" "Default -u is" "$CHANGELOG_URL" >&2
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exit 0
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;;
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-l|-lines|--lines)
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[[ -z "$2" ]] || [[ "$2" =~ [^[:digit:]]+ ]] && {
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printf "%s: %s: %s\\n" "${0##*/}" "invalid argument to -l" "maximum output lines required" >&2
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exit 1
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}
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MAX_LINES="$2"
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shift 2
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;;
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-r|-refresh|--refresh)
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[[ -z "$2" ]] || [[ "$2" =~ [^[:digit:]]+ ]] && {
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printf "%s: %s: %s\\n" "${0##*/}" "invalid argument to -r" "refresh interval (seconds) required" >&2
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exit 1
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}
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REFRESH_INTERVAL="$2"
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shift 2
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;;
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-u|-url|--url)
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[[ -z "$2" ]] && {
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printf "%s: %s: %s\\n" "${0##*/}" "invalid argument to -u" "URL to ChangeLog required" >&2
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exit 1
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}
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CHANGELOG_URL="$2"
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shift 2
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;;
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-w|-watch|--watch)
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WATCH_MODE=1
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shift
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;;
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--)
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break
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;;
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*)
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printf "%s: %s: %s\\n" "${0##*/}" "invalid option" "$1" >&2
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printf "%s: %s %s\\n" "Try" "${0##*/}" "--help" >&2
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exit 1
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;;
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esac
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done
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# Watch or output the coloured ChangeLog.
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if (( WATCH_MODE == 1 )); then
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export CHANGELOG_URL MAX_LINES
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export -f colourise_CL
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watch -n "$REFRESH_INTERVAL" -t -c "colourise_CL"
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exit $?
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else
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colourise_CL
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fi
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exit 0
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