Commit b86e8615 authored by Paul Eggert's avatar Paul Eggert

Initial revision

parent cde9337b
#!/bin/sh
# RCS to ChangeLog generator
# $Id$
# Generate a change log prefix from RCS/* and the existing ChangeLog (if any).
# Output the new prefix to standard output.
# You can edit this prefix by hand, and then prepend it to ChangeLog.
# Log into $rlogout the revisions checked in since the first ChangeLog entry.
datearg=-d'>1970'
if test -s ChangeLog
then
date=`sed 1q <ChangeLog` || exit
set x $date; shift
datearg="-d>$1 $2 $3 $4 $5"
fi
rlogout=/tmp/chg$$
trap exit 1 2 13 15
trap 'rm -f $rlogout; exit 1' 0
rlog "$datearg" RCS/* >$rlogout || exit
# Get the full name of each author the logs mention, and set initialize_fullname
# to awk code that initializes the `fullname' awk associative array.
# Warning: foreign authors (i.e. not known in the passwd file) are mishandled;
# you have to fix the resulting output by hand.
authors=`
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 |
sort -u
`
initialize_fullname=
for author in $authors
do
fullname=`
(grep "^$author:" /etc/passwd || ypmatch "$author" passwd) |
sed -n 's/^[^:]*:[^:]*:[^:]*:[^:]*:\([^,:]*\).*$/\1/;p;q'
`
case $fullname in
*\&*)
User=`
expr " $author" : ' \(.\)' |
tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
``
expr " $author" : ' .\(.*\)'
`
fullname=`echo "$fullname" | sed "s:&:$User:"`
esac
initialize_fullname="$initialize_fullname
fullname[\"$author\"] = \"$fullname\""
done
# Function to print a single log line.
# We don't use awk functions, to stay compatible with old awk versions.
# `Log' is the log message (with \n replaced by \r).
# `files' contains the affected files (each preceded by a space).
LINE_LENGTH=79 # suggested max width of log line
LOG_INDENT='\t' # what to indent each log entry with
LOG_INDENT_LENGTH=8 # print length of "LOG_INDENT"
printlogline='{
# Following the GNU coding standards, rewrite
# * file: (function): comment
# to
# * file (function): comment
if (Log ~ /^\([^)]*\): /) {
i = index(Log, ")")
files = files " " substr(Log, 1, i)
Log = substr(Log, i+3)
}
# If "label: comment" is too long, break the line after the ":".
sep = " "
if ('"$LINE_LENGTH"' <= '"$LOG_INDENT_LENGTH"' + 1 + length(files) + index(Log, "\r")) sep = "\n'"$LOG_INDENT"'"
# Print the label.
printf "'"$LOG_INDENT"'*%s:", files
# Print each line of the log, transliterating \r to \n.
while ((i = index(Log, "\r")) != 0) {
printf "%s%s\n", sep, substr(Log, 1, i-1)
sep = "'"$LOG_INDENT"'"
Log = substr(Log, i+1)
}
printf "\n"
}'
hostname=`(
hostname || cat /etc/whoami || uuname -l || uname -n
) 2>/dev/null` || {
echo >&2 "$0: cannot deduce hostname"
exit 1
}
# Process the rlog output, generating ChangeLog style entries.
# First, reformat the rlog output so that each line contains one log entry.
# Transliterate \n to \r so that multiline entries fit on a single line.
# Discard irrelevant rlog output.
awk <$rlogout '
/^Working file:/ { filename = $3 }
/^date: /, /^(-----------*|===========*)$/ {
if ($0 ~ /^branches: /) { next }
if ($0 ~ /^date: [0-9][ /0-9:]*;/) {
time = substr($3, 1, length($3)-1)
author = substr($5, 1, length($5)-1)
printf "%s %s %s %s \r", filename, $2, time, author
next
}
if ($0 ~ /^(-----------*|===========*)/) { print ""; next }
{ printf "%s\r", $0 }
}
' |
# Now each line is of the form
# FILENAME YYYY/MM/DD HH:MM:SS AUTHOR \rLOG
# where \r stands for a carriage return,
# and each line of the log is terminated by \r instead of \n.
# Sort the log entries, first by date (in reverse order),
# then by author, then by log entry, and finally by file name (just in case).
sort +1 -2r +3 +0 |
# Finally, reformat the sorted log entries.
awk '
BEGIN {
# Initialize the fullname associative array.
'"$initialize_fullname"'
# Set up date conversion tables.
# RCS uses a nice, clean, sortable format,
# but ChangeLog wants the traditional, ugly ctime format.
# January 1, 0 AD (Gregorian) was Saturday = 6
EPOCH_WEEKDAY = 6
# Of course, there was no 0 AD, but the algorithm works anyway.
w[0]="Sun"; w[1]="Mon"; w[2]="Tue"; w[3]="Wed"
w[4]="Thu"; w[5]="Fri"; w[6]="Sat"
m[0]="Jan"; m[1]="Feb"; m[2]="Mar"
m[3]="Apr"; m[4]="May"; m[5]="Jun"
m[6]="Jul"; m[7]="Aug"; m[8]="Sep"
m[9]="Oct"; m[10]="Nov"; m[11]="Dec"
# days in non-leap year thus far, indexed by month (0-12)
mo[0]=0; mo[1]=31; mo[2]=59; mo[3]=90
mo[4]=120; mo[5]=151; mo[6]=181; mo[7]=212
mo[8]=243; mo[9]=273; mo[10]=304; mo[11]=334
mo[12]=365
}
{
newlog = substr($0, 1 + index($0, "\r"))
if (Log != newlog || date != $2 || author != $4) {
# The previous log and this log differ.
# Print the old one.
if (date != "") '"$printlogline"'
# Get ready for the next log.
Log = newlog
files = ""
}
if (date != $2 || author != $4) {
# The previous date+author and this date+author differ.
# Print the new one.
date = $2
author = $4
# Convert nice RCS date like "1992/01/03 00:03:44"
# into ugly ctime date like "Fri Jan 3 00:03:44 1992".
# Calculate day of week from Gregorian calendar.
i = index($2, "/")
year = substr($2, 1, i-1)
monthday = substr($2, i+1)
i = index(monthday, "/")
month = substr(monthday, 1, i-1)
day = substr(monthday, i+1)
leap = 0
if (2 <= month && year%4 == 0 && (year%100 != 0 || year%400 == 0)) leap = 1
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
# Print "date fullname (email address)".
# Get the fullname from the associative array.
# The email address is just author@thishostname.
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"'"
}
files = files " " $1
}
END {
# Print the last log.
if (date != "") '"$printlogline"'
}
' &&
# Exit successfully.
exec rm -f $rlogout
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