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- #!/bin/sh
-
- # RCS to ChangeLog generator
-
- # 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.
-
- # Ignore log entries that start with `#'.
- # Clump together log entries that start with `{topic} ',
- # where `topic' contains neither white space nor `}'.
-
- # Author: Paul Eggert <eggert@twinsun.com>
-
- # $Id: rcs2log,v 1.12 1993/05/29 06:22:48 rms Exp $
-
- # Copyright 1992, 1993 Free Software Foundation, Inc.
-
- # This program 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, or (at your option)
- # any later version.
- #
- # This program 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 program; see the file COPYING. If not, write to
- # the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- nl='
- '
-
- # Parse options.
-
- # defaults
- indent=8 # indent of log line
- length=79 # suggested max width of log line
- tabwidth=8 # width of horizontal tab
-
- while :
- do
- case $1 in
- -i) indent=${2?};;
- -l) length=${2?};;
- -t) tabwidth=${2?};;
- -*) echo >&2 "$0: usage: $0 [-i indent] [-l length] [-t tabwidth] [file ...]"
- exit 1;;
- *) break
- esac
- shift; shift
- done
-
- month_data='
- 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
- '
-
-
- # Log into $rlogout the revisions checked in since the first ChangeLog entry.
-
- date=1970
- if test -s ChangeLog
- then
- # Add 1 to seconds to avoid duplicating most recent log.
- e='
- /^... ... [ 0-9][0-9] [ 0-9][0-9]:[0-9][0-9]:[0-9][0-9] [0-9]+ /{
- '"$month_data"'
- year = $5
- for (i=0; i<=11; i++) if (m[i] == $2) break
- dd = $3
- hh = substr($0,12,2)
- mm = substr($0,15,2)
- ss = substr($0,18,2)
- ss++
- if (ss == 60) {
- ss = 0
- mm++
- if (mm == 60) {
- mm = 0
- hh++
- if (hh == 24) {
- hh = 0
- dd++
- monthdays = mo[i+1] - mo[i]
- if (i == 1 && year%4 == 0 && (year%100 != 0 || year%400 == 0)) monthdays++
- if (dd == monthdays + 1) {
- dd = 1
- i++
- if (i == 12) {
- i = 0
- year++
- }
- }
- }
- }
- }
- printf "%d/%02d/%02d %02d:%02d:%02d\n", year, i+1, dd, hh, mm, ss
- exit
- }
- '
- d=`awk "$e" <ChangeLog` || exit
- case $d in
- ?*) date=$d
- esac
- fi
- datearg="-d>$date"
-
- # With no arguments, examine all files under the RCS directory.
- case $# in
- 0)
- files=
- for file in RCS/.* RCS/*
- do
- case $file in
- RCS/. | RCS/..) ;;
- RCS/.\* | RCS/\*) test -f "$file" && files=$files$nl$file;;
- *) files=$files$nl$file
- esac
- done
- case $files in
- '') exit 0
- esac
- oldIFS=$IFS
- IFS=$nl
- set $files
- IFS=$oldIFS
- esac
-
- rlogout=/tmp/chg$$
- trap exit 1 2 13 15
- trap 'rm -f $rlogout; exit 1' 0
-
- rlog "$datearg" "$@" >$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.
-
- initialize_fullname=
- 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
- `
- case $authors in
- ?*)
- initialize_author=
- for author in $authors
- do
- initialize_author="$initialize_author
- author[\"$author\"] = 1
- "
- done
-
- awkscript='
- BEGIN {
- alphabet = "abcdefghijklmnopqrstuvwxyz"
- ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
- '"$initialize_author"'
- }
- {
- if (author[$1]) {
- fullname = $5
- abbr = index(fullname, "&")
- if (abbr) {
- a = substr($1, 1, 1)
- A = a
- i = index(alphabet, a)
- if (i) A = substr(ALPHABET, i, 1)
- fullname = substr(fullname, 1, abbr-1) A substr($1, 2) substr(fullname, abbr+1)
- }
- printf "fullname[\"%s\"] = \"%s\"\n", $1, fullname
- author[$1] = 0
- }
- }
- '
-
- initialize_fullname=`
- (cat /etc/passwd; ypmatch $authors passwd) 2>/dev/null |
- awk -F: "$awkscript"
- `
- esac
-
-
- # 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.
- 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 ('"$length"' <= '"$indent"' + 1 + length(files) + index(Log, CR)) sep = "\n" indent_string
-
- # Print the label.
- printf "%s*%s:", indent_string, files
-
- # Print each line of the log, transliterating \r to \n.
- while ((i = index(Log, CR)) != 0) {
- printf "%s%s\n", sep, substr(Log, 1, i-1)
- sep = indent_string
- Log = substr(Log, i+1)
- }
- }'
-
- 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 %c", filename, $2, time, author, 13
- next
- }
- if ($0 ~ /^(-----------*|===========*)$/) { print ""; next }
- printf "%s%c", $0, 13
- }
- ' |
-
- # Now each line is of the form
- # FILENAME YYYY/MM/DD HH:MM:SS AUTHOR \rLOG
- # where \r stands for a carriage return,
- # and each line of the log is terminated by \r instead of \n.
- # Sort the log entries, first by date+time (in reverse order),
- # then by author, then by log entry, and finally by file name (just in case).
- sort +1 -3r +3 +0 |
-
- # Finally, reformat the sorted log entries.
- awk '
- BEGIN {
- # Some awks do not understand "\r" or "\013", so we have to
- # put a carriage return directly in the file.
- CR="" # <-- There is a single CR between the " chars here.
-
- # Initialize the fullname associative array.
- '"$initialize_fullname"'
-
- # Initialize indent string.
- indent_string = ""
- i = '"$indent"'
- if (0 < '"$tabwidth"')
- for (; '"$tabwidth"' <= i; i -= '"$tabwidth"')
- indent_string = indent_string "\t"
- while (1 <= i--)
- indent_string = indent_string " "
-
- # 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"
-
- '"$month_data"'
- }
-
- {
- newlog = substr($0, 1 + index($0, CR))
-
- # Ignore log entries prefixed by "#".
- if (newlog ~ /^#/) { next }
-
- if (Log != newlog || date != $2 || author != $4) {
-
- # The previous log and this log differ.
-
- # Print the old log.
- if (date != "") '"$printlogline"'
-
- # Logs that begin with "{clumpname} " should be grouped together,
- # and the clumpname should be removed.
- # Extract the new clumpname from the log header,
- # and use it to decide whether to output a blank line.
- newclumpname = ""
- sep = "\n"
- if (date == "") sep = ""
- if (newlog ~ /^{[^ }]*}[ ]/) {
- i = index(newlog, "}")
- newclumpname = substr(newlog, 1, i)
- while (substr(newlog, i+1) ~ /^[ ]/) i++
- newlog = substr(newlog, i+1)
- if (clumpname == newclumpname) sep = ""
- }
- printf sep
- clumpname = newclumpname
-
- # Get ready for the next log.
- Log = newlog
- if (files != "")
- for (i in filesknown)
- filesknown[i] = 0
- 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) + 0
- monthday = substr($2, i+1)
- i = index(monthday, "/")
- month = substr(monthday, 1, i-1) + 0
- day = substr(monthday, i+1) + 0
- 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)" if the fullname is known;
- # print "date author" otherwise.
- # Get the fullname from the associative array.
- # The email address is just author@thishostname.
- printf "%s %s %2d %s %d ", w[days_since_Sunday_before_epoch%7], m[month-1], day, $3, year
- if (fullname[author])
- printf "%s (%s@%s)\n\n", fullname[author], author, "'"$hostname"'"
- else
- printf "%s\n\n", author
- }
- if (! filesknown[$1]) {
- filesknown[$1] = 1
- if (files == "") files = " " $1
- else files = files ", " $1
- }
- }
- END {
- # Print the last log.
- if (date != "") {
- '"$printlogline"'
- printf "\n"
- }
- }
- ' &&
-
-
- # Exit successfully.
-
- exec rm -f $rlogout
-