3 # RCS to ChangeLog generator
5 # $Id: rcs2log,v 1.6 1992/05/08 21:45:00 eggert Exp eggert $
7 # Generate a change log prefix from RCS/* and the existing ChangeLog (if any).
8 # Output the new prefix to standard output.
9 # You can edit this prefix by hand, and then prepend it to ChangeLog.
11 # Ignore log entries that start with `#'.
12 # Clump together log entries that start with `{topic} ',
13 # where `topic' contains neither white space nor `}'.
18 indent
=8 # indent of log line
19 length
=79 # suggested max width of log line
20 tabwidth
=8 # width of horizontal tab
28 -*) echo >&2 "$0: usage: $0 [-i indent] [-l length] [-t tabwidth] [file ...]"
36 # Log into $rlogout the revisions checked in since the first ChangeLog entry.
41 # Add 1 to seconds to avoid duplicating most recent log.
42 # It's a good thing `rlog' doesn't mind a time ending in `:60'.
44 /^... ... [ 0-9][0-9] [ 0-9][0-9]:[0-9][0-9]:[0-9][0-9] [0-9]+ /{
45 printf "%s%.2d %s\n", substr($0,1,17), substr($0,18,2)+1, $5
49 d
=`awk "$e" <ChangeLog` ||
exit
58 trap 'rm -f $rlogout; exit 1' 0
64 rlog
"$datearg" "$@" >$rlogout ||
exit
67 # Get the full name of each author the logs mention, and set initialize_fullname
68 # to awk code that initializes the `fullname' awk associative array.
69 # Warning: foreign authors (i.e. not known in the passwd file) are mishandled;
70 # you have to fix the resulting output by hand.
74 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 |
80 for author
in $authors
82 initialize_author
="$initialize_author
83 author[\"$author\"] = 1
89 alphabet = "abcdefghijklmnopqrstuvwxyz"
90 ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
91 '"$initialize_author"'
96 abbr = index(fullname, "&")
100 i = index(alphabet, a)
101 if (i) A = substr(ALPHABET, i, 1)
102 fullname = substr(fullname, 1, abbr-1) A substr($1, 2) substr(fullname, abbr+1)
104 printf "fullname[\"%s\"] = \"%s\"\n", $1, fullname
110 initialize_fullname
=`
111 (cat /etc/passwd; ypmatch $authors passwd) 2>/dev/null |
117 # Function to print a single log line.
118 # We don't use awk functions, to stay compatible with old awk versions.
119 # `Log' is the log message (with \n replaced by \r).
120 # `files' contains the affected files.
123 # Following the GNU coding standards, rewrite
124 # * file: (function): comment
126 # * file (function): comment
127 if (Log ~ /^\([^)]*\): /) {
129 files = files " " substr(Log, 1, i)
130 Log = substr(Log, i+3)
133 # If "label: comment" is too long, break the line after the ":".
135 if ('"$length"' <= '"$indent"' + 1 + length(files) + index(Log, "\r")) sep = "\n" indent_string
138 printf "%s*%s:", indent_string, files
140 # Print each line of the log, transliterating \r to \n.
141 while ((i = index(Log, "\r")) != 0) {
142 printf "%s%s\n", sep, substr(Log, 1, i-1)
144 Log = substr(Log, i+1)
149 hostname || cat /etc/whoami || uuname -l || uname -n
151 echo >&2 "$0: cannot deduce hostname"
156 # Process the rlog output, generating ChangeLog style entries.
158 # First, reformat the rlog output so that each line contains one log entry.
159 # Transliterate \n to \r so that multiline entries fit on a single line.
160 # Discard irrelevant rlog output.
162 /^Working file:/ { filename = $3 }
163 /^date: /, /^(-----------*|===========*)$/ {
164 if ($0 ~ /^branches: /) { next }
165 if ($0 ~ /^date: [0-9][ /0-9:]*;/) {
166 time = substr($3, 1, length($3)-1)
167 author = substr($5, 1, length($5)-1)
168 printf "%s %s %s %s \r", filename, $2, time, author
171 if ($0 ~ /^(-----------*|===========*)$/) { print ""; next }
176 # Now each line is of the form
177 # FILENAME YYYY/MM/DD HH:MM:SS AUTHOR \rLOG
178 # where \r stands for a carriage return,
179 # and each line of the log is terminated by \r instead of \n.
180 # Sort the log entries, first by date+time (in reverse order),
181 # then by author, then by log entry, and finally by file name (just in case).
184 # Finally, reformat the sorted log entries.
188 # Initialize the fullname associative array.
189 '"$initialize_fullname"'
191 # Initialize indent string.
194 if (0 < '"$tabwidth"')
195 for (; '"$tabwidth"' <= i; i -= '"$tabwidth"')
196 indent_string = indent_string "\t"
198 indent_string = indent_string " "
200 # Set up date conversion tables.
201 # RCS uses a nice, clean, sortable format,
202 # but ChangeLog wants the traditional, ugly ctime format.
204 # January 1, 0 AD (Gregorian) was Saturday = 6
206 # Of course, there was no 0 AD, but the algorithm works anyway.
208 w[0]="Sun"; w[1]="Mon"; w[2]="Tue"; w[3]="Wed"
209 w[4]="Thu"; w[5]="Fri"; w[6]="Sat"
211 m[0]="Jan"; m[1]="Feb"; m[2]="Mar"
212 m[3]="Apr"; m[4]="May"; m[5]="Jun"
213 m[6]="Jul"; m[7]="Aug"; m[8]="Sep"
214 m[9]="Oct"; m[10]="Nov"; m[11]="Dec"
216 # days in non-leap year thus far, indexed by month (0-12)
217 mo[0]=0; mo[1]=31; mo[2]=59; mo[3]=90
218 mo[4]=120; mo[5]=151; mo[6]=181; mo[7]=212
219 mo[8]=243; mo[9]=273; mo[10]=304; mo[11]=334
224 newlog = substr($0, 1 + index($0, "\r"))
226 # Ignore log entries prefixed by "#".
227 if (newlog ~ /^#/) { next }
229 if (Log != newlog || date != $2 || author != $4) {
231 # The previous log and this log differ.
234 if (date != "") '"$printlogline"'
236 # Logs that begin with "{clumpname} " should be grouped together,
237 # and the clumpname should be removed.
238 # Extract the new clumpname from the log header,
239 # and use it to decide whether to output a blank line.
242 if (date == "") sep = ""
243 if (newlog ~ /^{[^ }]*}[ ]/) {
244 i = index(newlog, "}")
245 newclumpname = substr(newlog, 1, i)
246 while (substr(newlog, i+1) ~ /^[ ]/) i++
247 newlog = substr(newlog, i+1)
248 if (clumpname == newclumpname) sep = ""
251 clumpname = newclumpname
253 # Get ready for the next log.
256 for (i in filesknown)
260 if (date != $2 || author != $4) {
261 # The previous date+author and this date+author differ.
266 # Convert nice RCS date like "1992/01/03 00:03:44"
267 # into ugly ctime date like "Fri Jan 3 00:03:44 1992".
268 # Calculate day of week from Gregorian calendar.
270 year = substr($2, 1, i-1) + 0
271 monthday = substr($2, i+1)
272 i = index(monthday, "/")
273 month = substr(monthday, 1, i-1) + 0
274 day = substr(monthday, i+1) + 0
276 if (2 < month && year%4 == 0 && (year%100 != 0 || year%400 == 0)) leap = 1
277 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
279 # Print "date fullname (email address)" if the fullname is known;
280 # print "date author" otherwise.
281 # Get the fullname from the associative array.
282 # The email address is just author@thishostname.
283 printf "%s %s %2d %s %d ", w[days_since_Sunday_before_epoch%7], m[month-1], day, $3, year
284 if (fullname[author])
285 printf "%s (%s@%s)\n\n", fullname[author], author, "'"$hostname"'"
287 printf "%s\n\n", author
289 if (! filesknown[$1]) {
291 if (files == "") files = " " $1
292 else files = files ", " $1
296 # Print the last log.