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Initial revision
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Paul Eggert
parent
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1 changed files with 208 additions and 0 deletions
208
lib-src/rcs2log
Executable file
208
lib-src/rcs2log
Executable file
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#!/bin/sh
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# RCS to ChangeLog generator
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# $Id$
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# Generate a change log prefix from RCS/* and the existing ChangeLog (if any).
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# Output the new prefix to standard output.
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# You can edit this prefix by hand, and then prepend it to ChangeLog.
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# Log into $rlogout the revisions checked in since the first ChangeLog entry.
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datearg=-d'>1970'
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if test -s ChangeLog
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then
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date=`sed 1q <ChangeLog` || exit
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set x $date; shift
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datearg="-d>$1 $2 $3 $4 $5"
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fi
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rlogout=/tmp/chg$$
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trap exit 1 2 13 15
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trap 'rm -f $rlogout; exit 1' 0
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rlog "$datearg" RCS/* >$rlogout || exit
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# Get the full name of each author the logs mention, and set initialize_fullname
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# to awk code that initializes the `fullname' awk associative array.
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# Warning: foreign authors (i.e. not known in the passwd file) are mishandled;
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# you have to fix the resulting output by hand.
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authors=`
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sed -n 's|^date: *[0-9]*/[0-9][0-9]/[0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9]; *author: *\([^; ]*\).*|\1|p' <$rlogout |
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sort -u
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`
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initialize_fullname=
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for author in $authors
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do
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fullname=`
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(grep "^$author:" /etc/passwd || ypmatch "$author" passwd) |
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sed -n 's/^[^:]*:[^:]*:[^:]*:[^:]*:\([^,:]*\).*$/\1/;p;q'
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`
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case $fullname in
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*\&*)
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User=`
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expr " $author" : ' \(.\)' |
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tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
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``
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expr " $author" : ' .\(.*\)'
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`
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fullname=`echo "$fullname" | sed "s:&:$User:"`
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esac
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initialize_fullname="$initialize_fullname
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fullname[\"$author\"] = \"$fullname\""
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done
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# Function to print a single log line.
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# We don't use awk functions, to stay compatible with old awk versions.
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# `Log' is the log message (with \n replaced by \r).
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# `files' contains the affected files (each preceded by a space).
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LINE_LENGTH=79 # suggested max width of log line
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LOG_INDENT='\t' # what to indent each log entry with
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LOG_INDENT_LENGTH=8 # print length of "LOG_INDENT"
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printlogline='{
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# Following the GNU coding standards, rewrite
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# * file: (function): comment
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# to
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# * file (function): comment
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if (Log ~ /^\([^)]*\): /) {
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i = index(Log, ")")
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files = files " " substr(Log, 1, i)
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Log = substr(Log, i+3)
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}
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# If "label: comment" is too long, break the line after the ":".
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sep = " "
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if ('"$LINE_LENGTH"' <= '"$LOG_INDENT_LENGTH"' + 1 + length(files) + index(Log, "\r")) sep = "\n'"$LOG_INDENT"'"
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# Print the label.
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printf "'"$LOG_INDENT"'*%s:", files
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# Print each line of the log, transliterating \r to \n.
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while ((i = index(Log, "\r")) != 0) {
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printf "%s%s\n", sep, substr(Log, 1, i-1)
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sep = "'"$LOG_INDENT"'"
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Log = substr(Log, i+1)
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}
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printf "\n"
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}'
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hostname=`(
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hostname || cat /etc/whoami || uuname -l || uname -n
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) 2>/dev/null` || {
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echo >&2 "$0: cannot deduce hostname"
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exit 1
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}
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# Process the rlog output, generating ChangeLog style entries.
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# First, reformat the rlog output so that each line contains one log entry.
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# Transliterate \n to \r so that multiline entries fit on a single line.
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# Discard irrelevant rlog output.
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awk <$rlogout '
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/^Working file:/ { filename = $3 }
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/^date: /, /^(-----------*|===========*)$/ {
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if ($0 ~ /^branches: /) { next }
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if ($0 ~ /^date: [0-9][ /0-9:]*;/) {
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time = substr($3, 1, length($3)-1)
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author = substr($5, 1, length($5)-1)
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printf "%s %s %s %s \r", filename, $2, time, author
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next
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}
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if ($0 ~ /^(-----------*|===========*)/) { print ""; next }
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{ printf "%s\r", $0 }
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}
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' |
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# Now each line is of the form
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# FILENAME YYYY/MM/DD HH:MM:SS AUTHOR \rLOG
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# where \r stands for a carriage return,
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# and each line of the log is terminated by \r instead of \n.
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# Sort the log entries, first by date (in reverse order),
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# then by author, then by log entry, and finally by file name (just in case).
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sort +1 -2r +3 +0 |
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# Finally, reformat the sorted log entries.
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awk '
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BEGIN {
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# Initialize the fullname associative array.
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'"$initialize_fullname"'
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# Set up date conversion tables.
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# RCS uses a nice, clean, sortable format,
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# but ChangeLog wants the traditional, ugly ctime format.
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# January 1, 0 AD (Gregorian) was Saturday = 6
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EPOCH_WEEKDAY = 6
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# Of course, there was no 0 AD, but the algorithm works anyway.
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w[0]="Sun"; w[1]="Mon"; w[2]="Tue"; w[3]="Wed"
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w[4]="Thu"; w[5]="Fri"; w[6]="Sat"
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m[0]="Jan"; m[1]="Feb"; m[2]="Mar"
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m[3]="Apr"; m[4]="May"; m[5]="Jun"
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m[6]="Jul"; m[7]="Aug"; m[8]="Sep"
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m[9]="Oct"; m[10]="Nov"; m[11]="Dec"
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# days in non-leap year thus far, indexed by month (0-12)
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mo[0]=0; mo[1]=31; mo[2]=59; mo[3]=90
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mo[4]=120; mo[5]=151; mo[6]=181; mo[7]=212
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mo[8]=243; mo[9]=273; mo[10]=304; mo[11]=334
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mo[12]=365
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}
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{
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newlog = substr($0, 1 + index($0, "\r"))
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if (Log != newlog || date != $2 || author != $4) {
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# The previous log and this log differ.
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# Print the old one.
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if (date != "") '"$printlogline"'
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# Get ready for the next log.
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Log = newlog
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files = ""
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}
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if (date != $2 || author != $4) {
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# The previous date+author and this date+author differ.
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# Print the new one.
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date = $2
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author = $4
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# Convert nice RCS date like "1992/01/03 00:03:44"
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# into ugly ctime date like "Fri Jan 3 00:03:44 1992".
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# Calculate day of week from Gregorian calendar.
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i = index($2, "/")
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year = substr($2, 1, i-1)
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monthday = substr($2, i+1)
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i = index(monthday, "/")
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month = substr(monthday, 1, i-1)
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day = substr(monthday, i+1)
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leap = 0
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if (2 <= month && year%4 == 0 && (year%100 != 0 || year%400 == 0)) leap = 1
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days_since_Sunday_before_epoch = EPOCH_WEEKDAY + year * 365 + int((year + 3) / 4) - int((year + 99) / 100) + int((year + 399) / 400) + mo[month-1] + leap + day - 1
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# Print "date fullname (email address)".
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# Get the fullname from the associative array.
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# The email address is just author@thishostname.
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printf "%s %s %2d %s %d %s (%s@%s)\n\n", w[days_since_Sunday_before_epoch%7], m[month-1], day, $3, year, fullname[author], author, "'"$hostname"'"
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}
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files = files " " $1
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}
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END {
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# Print the last log.
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if (date != "") '"$printlogline"'
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}
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' &&
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# Exit successfully.
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exec rm -f $rlogout
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