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382 lines
9.8 KiB
Bash
Executable File
382 lines
9.8 KiB
Bash
Executable File
#!/bin/sh
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# RCS to ChangeLog generator
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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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# Ignore log entries that start with `#'.
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# Clump together log entries that start with `{topic} ',
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# where `topic' contains neither white space nor `}'.
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# Author: Paul Eggert <eggert@twinsun.com>
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# $Id: rcs2log,v 1.11 1993/05/03 17:55:22 eggert Exp rms $
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# Copyright 1992, 1993 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; see the file COPYING. If not, write to
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# the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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nl='
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'
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# Parse options.
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# defaults
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indent=8 # indent of log line
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length=79 # suggested max width of log line
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tabwidth=8 # width of horizontal tab
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while :
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do
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case $1 in
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-i) indent=${2?};;
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-l) length=${2?};;
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-t) tabwidth=${2?};;
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-*) echo >&2 "$0: usage: $0 [-i indent] [-l length] [-t tabwidth] [file ...]"
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exit 1;;
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*) break
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esac
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shift; shift
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done
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month_data='
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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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# Log into $rlogout the revisions checked in since the first ChangeLog entry.
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date=1970
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if test -s ChangeLog
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then
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# Add 1 to seconds to avoid duplicating most recent log.
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e='
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/^... ... [ 0-9][0-9] [ 0-9][0-9]:[0-9][0-9]:[0-9][0-9] [0-9]+ /{
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'"$month_data"'
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year = $5
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for (i=0; i<=11; i++) if (m[i] == $2) break
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dd = $3
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hh = substr($0,12,2)
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mm = substr($0,15,2)
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ss = substr($0,18,2)
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ss++
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if (ss == 60) {
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ss = 0
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mm++
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if (mm == 60) {
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mm = 0
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hh++
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if (hh == 24) {
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hh = 0
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dd++
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monthdays = mo[i+1] - mo[i]
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if (i == 1 && year%4 == 0 && (year%100 != 0 || year%400 == 0)) monthdays++
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if (dd == monthdays + 1) {
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dd = 1
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i++
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if (i == 12) {
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i = 0
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year++
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}
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}
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}
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}
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}
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printf "%d/%02d/%02d %02d:%02d:%02d\n", year, i+1, dd, hh, mm, ss
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exit
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}
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'
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d=`awk "$e" <ChangeLog` || exit
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case $d in
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?*) date=$d
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esac
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fi
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datearg="-d>$date"
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# With no arguments, examine all files under the RCS directory.
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case $# in
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0)
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files=
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for file in RCS/.* RCS/*
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do
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case $file in
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RCS/. | RCS/..) ;;
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RCS/.\* | RCS/\*) test -f "$file" && files=$files$nl$file;;
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*) files=$files$nl$file
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esac
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done
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case $files in
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'') exit 0
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esac
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oldIFS=$IFS
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IFS=$nl
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set $files
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IFS=$oldIFS
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esac
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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" "$@" >$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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initialize_fullname=
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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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case $authors in
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?*)
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initialize_author=
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for author in $authors
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do
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initialize_author="$initialize_author
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author[\"$author\"] = 1
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"
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done
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awkscript='
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BEGIN {
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alphabet = "abcdefghijklmnopqrstuvwxyz"
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ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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'"$initialize_author"'
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}
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{
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if (author[$1]) {
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fullname = $5
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abbr = index(fullname, "&")
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if (abbr) {
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a = substr($1, 1, 1)
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A = a
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i = index(alphabet, a)
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if (i) A = substr(ALPHABET, i, 1)
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fullname = substr(fullname, 1, abbr-1) A substr($1, 2) substr(fullname, abbr+1)
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}
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printf "fullname[\"%s\"] = \"%s\"\n", $1, fullname
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author[$1] = 0
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}
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}
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'
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initialize_fullname=`
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(cat /etc/passwd; ypmatch $authors passwd) 2>/dev/null |
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awk -F: "$awkscript"
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`
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esac
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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.
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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 ('"$length"' <= '"$indent"' + 1 + length(files) + index(Log, CR)) sep = "\n" indent_string
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# Print the label.
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printf "%s*%s:", indent_string, files
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# Print each line of the log, transliterating \r to \n.
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while ((i = index(Log, CR)) != 0) {
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printf "%s%s\n", sep, substr(Log, 1, i-1)
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sep = indent_string
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Log = substr(Log, i+1)
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}
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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 %c", filename, $2, time, author, 13
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next
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}
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if ($0 ~ /^(-----------*|===========*)$/) { print ""; next }
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printf "%s%c", $0, 13
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}
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' |
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# Now each line is of the form
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# FILENAME YYYY/MM/DD HH:MM:SS AUTHOR \rLOG
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# where \r stands for a carriage return,
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# and each line of the log is terminated by \r instead of \n.
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# Sort the log entries, first by date+time (in reverse order),
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# then by author, then by log entry, and finally by file name (just in case).
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sort +1 -3r +3 +0 |
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# Finally, reformat the sorted log entries.
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awk '
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BEGIN {
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# Some awks do not understand "\r" or "\013", so we have to
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# put a carriage return directly in the file.
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CR="
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" # <-- There is a single CR between the " chars here.
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# Initialize the fullname associative array.
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'"$initialize_fullname"'
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# Initialize indent string.
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indent_string = ""
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i = '"$indent"'
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if (0 < '"$tabwidth"')
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for (; '"$tabwidth"' <= i; i -= '"$tabwidth"')
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indent_string = indent_string "\t"
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while (1 <= i--)
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indent_string = indent_string " "
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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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'"$month_data"'
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}
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{
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newlog = substr($0, 1 + index($0, CR))
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# Ignore log entries prefixed by "#".
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if (newlog ~ /^#/) { next }
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if (Log != newlog || date != $2 || author != $4) {
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# The previous log and this log differ.
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# Print the old log.
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if (date != "") '"$printlogline"'
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# Logs that begin with "{clumpname} " should be grouped together,
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# and the clumpname should be removed.
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# Extract the new clumpname from the log header,
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# and use it to decide whether to output a blank line.
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newclumpname = ""
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sep = "\n"
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if (date == "") sep = ""
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if (newlog ~ /^{[^ }]*}[ ]/) {
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i = index(newlog, "}")
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newclumpname = substr(newlog, 1, i)
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while (substr(newlog, i+1) ~ /^[ ]/) i++
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newlog = substr(newlog, i+1)
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if (clumpname == newclumpname) sep = ""
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}
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printf sep
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clumpname = newclumpname
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# Get ready for the next log.
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Log = newlog
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if (files != "")
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for (i in filesknown)
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filesknown[i] = 0
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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) + 0
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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) + 0
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day = substr(monthday, i+1) + 0
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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)" if the fullname is known;
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# print "date author" otherwise.
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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 ", w[days_since_Sunday_before_epoch%7], m[month-1], day, $3, year
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if (fullname[author])
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printf "%s (%s@%s)\n\n", fullname[author], author, "'"$hostname"'"
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else
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printf "%s\n\n", author
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}
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if (! filesknown[$1]) {
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filesknown[$1] = 1
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if (files == "") files = " " $1
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else files = files ", " $1
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}
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}
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END {
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# Print the last log.
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if (date != "") {
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'"$printlogline"'
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printf "\n"
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}
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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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