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Annotation of cvsweb/cvsweb.cgi, Revision 1.16

1.1       jfieber     1: #!/usr/bin/perl -s
                      2: #
                      3: # cvsweb - a CGI interface to the CVS tree.
                      4: #
                      5: # Written by Bill Fenner <fenner@parc.xerox.com> on his own time.
                      6: # Insert BSD copyright here.
                      7: #
                      8: #HTTP_USER_AGENT: Mozilla/1.1N (X11; I; SunOS 4.1.3_U1 sun4m) via proxy gateway CERN-HTTPD/3.0 libwww/2.17
                      9: #SERVER_NAME: www.freebsd.org
                     10: #QUERY_STRING: baz
                     11: #SCRIPT_FILENAME: /usr/local/www/cgi-bin/env.pl
                     12: #SERVER_PORT: 80
                     13: #HTTP_ACCEPT: */*, image/gif, image/x-xbitmap, image/jpeg
                     14: #SERVER_PROTOCOL: HTTP/1.0
                     15: #HTTP_COOKIE: s=beta26429821397802167
                     16: #PATH_INFO: /foo/bar
                     17: #REMOTE_ADDR: 13.1.64.94
                     18: #DOCUMENT_ROOT: /usr/local/www/data/
                     19: #PATH: /sbin:/bin:/usr/sbin:/usr/bin
                     20: #PATH_TRANSLATED: /usr/local/www/data//foo/bar
                     21: #GATEWAY_INTERFACE: CGI/1.1
                     22: #REQUEST_METHOD: GET
                     23: #SCRIPT_NAME: /cgi-bin/env.pl
                     24: #SERVER_SOFTWARE: Apache/1.0.0
                     25: #REMOTE_HOST: beta.xerox.com
                     26: #SERVER_ADMIN: webmaster@freebsd.org
                     27: #
                     28: require 'timelocal.pl';
                     29: require 'ctime.pl';
                     30:
1.2       jfieber    31: $hsty_base = "";
                     32: require 'cgi-style.pl';
1.11      wosch      33: #&get_the_source;
1.2       jfieber    34:
1.10      wosch      35: %CVSROOT = (
                     36:            'freebsd', '/home/ncvs',
                     37:            'openbsd', '/home/OpenBSD/cvs',
                     38:            'learn', '/c/learncvs',
1.15      wosch      39:            'mozilla', '/a/mozilla-cvs',
1.10      wosch      40:            );
                     41:
1.16    ! wosch      42: %CVSROOTdescr = (
        !            43:            'freebsd', 'FreeBSD',
        !            44:            'openbsd', 'OpenBSD',
        !            45:            'learn', 'Learn',
        !            46:            'mozilla', 'Mozilla FreeBSD',
        !            47:            );
        !            48:
1.10      wosch      49: $cvstreedefault = 'freebsd';
                     50: $cvstree = $cvstreedefault;
                     51: $cvsroot = $CVSROOT{"$cvstree"} || "/home/ncvs";
                     52:
                     53:
1.1       jfieber    54: $intro = "
                     55: This is a WWW interface to the FreeBSD CVS tree.
                     56: You can browse the file hierarchy by picking directories
                     57: (which have slashes after them, e.g. <b>src/</b>).
                     58: If you pick a file, you will see the revision history
                     59: for that file.
                     60: Selecting a revision number will download that revision of
                     61: the file.  There is a link at each revision to display
                     62: diffs between that revision and the previous one, and
                     63: a form at the bottom of the page that allows you to
                     64: display diffs between arbitrary revisions.
                     65: <p>
1.7       fenner     66: If you would like to use this CGI script on your own web server and
                     67: CVS tree, see <A HREF=\"http://www.freebsd.org/~fenner/cvsweb/\">
                     68: the CVSWeb distribution site</A>.
                     69: <p>
1.1       jfieber    70: Please send any suggestions, comments, etc. to
1.10      wosch      71: <A HREF=\"mailto:fenner\@freebsd.org\">Bill Fenner &lt;fenner\@freebsd.org&gt;</A>
1.1       jfieber    72: ";
                     73: $shortinstr = "
                     74: Click on a directory to enter that directory. Click on a file to display
                     75: its revision history and to get a
                     76: chance to display diffs between revisions.
                     77: ";
                     78:
                     79: $verbose = $v;
                     80: ($where = $ENV{'PATH_INFO'}) =~ s|^/||;
                     81: $where =~ s|/$||;
                     82: ($scriptname = $ENV{'SCRIPT_NAME'}) =~ s|^/?|/|;
                     83: $scriptname =~ s|/$||;
                     84: $scriptwhere = $scriptname . '/' . $where;
                     85: $scriptwhere =~ s|/$||;
                     86:
1.9       fenner     87: if ($query = $ENV{'QUERY_STRING'}) {
                     88:     foreach (split(/&/, $query)) {
1.7       fenner     89:        s/%(..)/sprintf("%c", hex($1))/ge;      # unquote %-quoted
                     90:        if (/(\S+)=(.*)/) {
                     91:            $input{$1} = $2;
                     92:        } else {
                     93:            $input{$_}++;
                     94:        }
                     95:     }
1.9       fenner     96:     $query = "?" . $query;
1.7       fenner     97: }
1.10      wosch      98:
                     99:
1.11      wosch     100: $config = '/usr/local/etc/cvsweb';
                    101: do "$config" if -f $config;
1.10      wosch     102:
                    103: if ($input{'cvsroot'}) {
                    104:     if ($CVSROOT{$input{'cvsroot'}}) {
                    105:        $cvstree = $input{'cvsroot'};
                    106:        $cvsroot = $CVSROOT{"$cvstree"};
                    107:     }
                    108: }
1.11      wosch     109: do "$config-$cvstree" if -f "$config-$cvstree";
1.10      wosch     110:
                    111: $fullname = $cvsroot . '/' . $where;
1.12      fenner    112:
1.10      wosch     113: if (!-d $cvsroot) {
1.12      fenner    114:        &fatal("500 Internal Error",'$CVSROOT not found!<P>The server on which the CVS tree lives is probably down.  Please try again in a few minutes.');
1.10      wosch     115: }
                    116:
                    117:
1.16    ! wosch     118: {
        !           119:     local(@foo, $i);
        !           120:     local($scriptname) = $ENV{'SCRIPT_NAME'};
        !           121:     foreach (keys %CVSROOT) {
        !           122:        if (-d $CVSROOT{$_}) {
        !           123:            push(@foo, $_);
        !           124:        }
        !           125:     }
        !           126:     if ($#foo > 1) {
        !           127:        $intro .= "<p>\nThis script support the following CVS trees:\n";
        !           128:        for($i = 0; $i <= $#foo; $i++) {
        !           129:            $intro .= qq{<a href="$scriptname?cvsroot=$foo[$i]">} .
        !           130:                ($CVSROOTdescr{$foo[$i]} ?
        !           131:                 $CVSROOTdescr{$foo[$i]} : $foo[$i]) . qq{</a>} .
        !           132:                     ($i == $#foo  ? ".\n" : ",\n");
        !           133:        }
        !           134:     }
        !           135: }
        !           136:
        !           137:
1.1       jfieber   138: if (-d $fullname) {
                    139:        opendir(DIR, $fullname) || &fatal("404 Not Found","$where: $!");
                    140:        @dir = readdir(DIR);
                    141:        closedir(DIR);
                    142:        if ($where eq '') {
1.2       jfieber   143:            print &html_header("FreeBSD CVS Repository");
1.1       jfieber   144:            print $intro;
                    145:        } else {
1.2       jfieber   146:            print &html_header("/$where");
1.1       jfieber   147:            print $shortinstr;
                    148:        }
1.16    ! wosch     149:        print "<p>";
        !           150:        print "Current CVS tree: <b>$cvstree</b><br>\n"
        !           151:            if $cvstree ne $cvstreedefault;
        !           152:        print "Current directory: <b>/$where</b>\n";
1.2       jfieber   153:        print "<P><HR NOSHADE>\n";
1.1       jfieber   154:        # Using <MENU> in this manner violates the HTML2.0 spec but
                    155:        # provides the results that I want in most browsers.  Another
                    156:        # case of layout spooging up HTML.
                    157:        print "<MENU>\n";
1.9       fenner    158:        lookingforattic:
                    159:        for ($i = 0; $i <= $#dir; $i++) {
                    160:                if ($dir[$i] eq "Attic") {
                    161:                        last lookingforattic;
                    162:                }
                    163:        }
1.12      fenner    164:        $haveattic = 1 if ($i <= $#dir);
1.9       fenner    165:        if (!$input{"showattic"} && ($i <= $#dir) &&
                    166:                                opendir(DIR, $fullname . "/Attic")) {
                    167:                splice(@dir, $i, 1,
                    168:                        grep((s|^|Attic/|,!m|/\.|), readdir(DIR)));
                    169:                closedir(DIR);
                    170:        }
                    171:        # Sort without the Attic/ pathname.
                    172:        foreach (sort {($c=$a)=~s|.*/||;($d=$b)=~s|.*/||;($c cmp $d)} @dir) {
1.1       jfieber   173:            if ($_ eq '.') {
                    174:                next;
                    175:            }
1.9       fenner    176:            if (s|^Attic/||) {
                    177:                $attic = " (in the Attic)";
                    178:            } else {
                    179:                $attic = "";
                    180:            }
1.1       jfieber   181:            if ($_ eq '..') {
                    182:                next if ($where eq '');
                    183:                ($updir = $scriptwhere) =~ s|[^/]+$||;
                    184:                print "<IMG SRC=\"/icons/back.gif\"> ",
1.9       fenner    185:                    &link("Previous Directory",$updir . $query), "<BR>";
1.7       fenner    186: #              print "<IMG SRC=???> ",
                    187: #                  &link("Directory-wide diffs", $scriptwhere . '/*'), "<BR>";
1.1       jfieber   188:            } elsif (-d $fullname . "/" . $_) {
                    189:                print "<IMG SRC=\"/icons/dir.gif\"> ",
1.12      fenner    190:                    &link($_ . "/", $scriptwhere . '/' . $_ . '/' . $query),
                    191:                            $attic, "<BR>";
1.1       jfieber   192:            } elsif (s/,v$//) {
1.7       fenner    193: # TODO: add date/time?  How about sorting?
1.1       jfieber   194:                print "<IMG SRC=\"/icons/text.gif\"> ",
1.9       fenner    195:                    &link($_, $scriptwhere . '/' .
                    196:                            ($attic ? "Attic/" : "") . $_ . $query),
1.12      fenner    197:                            $attic, "<BR>";
1.1       jfieber   198:            }
                    199:        }
                    200:        print "</MENU>\n";
1.9       fenner    201:        if ($input{"only_on_branch"}) {
                    202:            print "<HR><FORM METHOD=\"GET\" ACTION=\"${scriptwhere}\">\n";
                    203:            print "Currently showing only branch $input{'only_on_branch'}.\n";
                    204:            $input{"only_on_branch"}="";
                    205:            foreach $k (keys %input) {
                    206:                print "<INPUT TYPE=hidden NAME=$k VALUE=$input{$k}>\n" if $input{$k};
                    207:            }
                    208:            print "<INPUT TYPE=SUBMIT VALUE=\"Show all branches\">\n";
                    209:            print "</FORM>\n";
                    210:        }
                    211:        $formwhere = $scriptwhere;
                    212:        $formwhere =~ s|Attic/?$|| if ($input{"showattic"});
1.12      fenner    213:        if ($haveattic) {
                    214:                print "<HR><FORM METHOD=\"GET\" ACTION=\"${formwhere}\">\n";
                    215:                $input{"showattic"}=!$input{"showattic"};
                    216:                foreach $k (keys %input) {
                    217:                    print "<INPUT TYPE=hidden NAME=$k VALUE=$input{$k}>\n" if $input{$k};
                    218:                }
                    219:                print "<INPUT TYPE=SUBMIT VALUE=\"";
                    220:                print ($input{"showattic"} ? "Show" : "Hide");
                    221:                print " attic directories\">\n";
                    222:                print "</FORM>\n";
                    223:        }
1.2       jfieber   224:        print &html_footer;
1.1       jfieber   225:        print "</BODY></HTML>\n";
                    226: } elsif (-f $fullname . ',v') {
1.7       fenner    227:        if ($input{'rev'} =~ /^[\d\.]+$/) {
                    228:                &checkout($fullname, $input{'rev'});
                    229:                exit;
                    230:        }
                    231:        if ($input{'r1'} && $input{'r2'}) {
                    232:                &dodiff($fullname, $input{'r1'}, $input{'tr1'},
                    233:                        $input{'r2'}, $input{'tr2'}, $input{'f'});
1.1       jfieber   234:                exit;
                    235:        }
1.12      fenner    236: print("going to dolog($fullname)\n") if ($verbose);
                    237:        &dolog($fullname);
                    238: } elsif ($fullname =~ s/\.diff$// && -f $fullname . ",v" &&
                    239:                                $input{'r1'} && $input{'r2'}) {
                    240:        # Allow diffs using the ".diff" extension
                    241:        # so that browsers that default to the URL
                    242:        # for a save filename don't save diff's as
                    243:        # e.g. foo.c
                    244:        &dodiff($fullname, $input{'r1'}, $input{'tr1'},
                    245:                $input{'r2'}, $input{'tr2'}, $input{'f'});
                    246:        exit;
                    247: } elsif (($newname = $fullname) =~ s|/([^/]+)$|/Attic/$1| &&
                    248:                                 -f $newname . ",v") {
                    249:        # The file has been removed and is in the Attic.
                    250:        # Send a redirect pointing to the file in the Attic.
                    251:        ($newplace = $scriptwhere) =~ s|/([^/]+)$|/Attic/$1|;
                    252:        &redirect($newplace);
                    253:        exit;
                    254: } elsif (0 && (@files = &safeglob($fullname . ",v"))) {
                    255:        print "Content-type: text/plain\n\n";
                    256:        print "You matched the following files:\n";
                    257:        print join("\n", @files);
                    258:        # Find the tags from each file
                    259:        # Display a form offering diffs between said tags
                    260: } else {
                    261:        # Assume it's a module name with a potential path following it.
1.13      fenner    262:        $xtra = $& if (($module = $where) =~ s|/.*||);
1.12      fenner    263:        # Is there an indexed version of modules?
                    264:        if (open(MODULES, "$cvsroot/CVSROOT/modules")) {
                    265:                while (<MODULES>) {
                    266:                        if (/^(\S+)\s+(\S+)/o && $module eq $1
                    267:                                && -d "${cvsroot}/$2" && $module ne $2) {
                    268:                                &redirect($scriptname . '/' . $2 . $xtra);
                    269:                        }
                    270:                }
                    271:        }
                    272:        &fatal("404 Not Found","$where: no such file or directory");
                    273: }
                    274:
                    275: sub htmlify {
                    276:        local($string, $pr) = @_;
                    277:
                    278:        $string =~ s/&/&amp;/g;
                    279:        $string =~ s/</&lt;/g;
                    280:        $string =~ s/>/&gt;/g;
                    281:
                    282:        if ($pr) {
                    283:                $string =~ s|\bpr(\W+[a-z]+/\W*)(\d+)|<A HREF=/cgi/query-pr.cgi?pr=$2>$&</A>|ig;
                    284:        }
                    285:
                    286:        $string;
                    287: }
                    288:
                    289: sub link {
                    290:        local($name, $where) = @_;
                    291:
                    292:        "<A HREF=\"$where\">$name</A>\n";
                    293: }
                    294:
                    295: sub revcmp {
                    296:        local($rev1, $rev2) = @_;
                    297:        local(@r1) = split(/\./, $rev1);
                    298:        local(@r2) = split(/\./, $rev2);
                    299:        local($a,$b);
                    300:
                    301:        while (($a = shift(@r1)) && ($b = shift(@r2))) {
                    302:            if ($a != $b) {
                    303:                return $a <=> $b;
                    304:            }
                    305:        }
                    306:        if (@r1) { return 1; }
                    307:        if (@r2) { return -1; }
                    308:        return 0;
                    309: }
                    310:
                    311: sub fatal {
                    312:        local($errcode, $errmsg) = @_;
                    313:        print "Status: $errcode\n";
                    314:        print &html_header("Error");
                    315: #      print "Content-type: text/html\n";
                    316: #      print "\n";
                    317: #      print "<HTML><HEAD><TITLE>Error</TITLE></HEAD>\n";
                    318: #      print "<BODY>Error: $errmsg</BODY></HTML>\n";
                    319:        print "Error: $errmsg\n";
                    320:        print &html_footer;
                    321:        exit(1);
                    322: }
                    323:
                    324: sub redirect {
                    325:        local($url) = @_;
                    326:        print "Status: 301 Moved\n";
                    327:        print "Location: $url\n";
                    328:        print &html_header("Moved");
                    329: #      print "Content-type: text/html\n";
                    330: #      print "\n";
                    331: #      print "<HTML><HEAD><TITLE>Moved</TITLE></HEAD>\n";
                    332: #      print "<BODY>This document is located <A HREF=$url>here</A>.</BODY></HTML>\n";
                    333:        print "This document is located <A HREF=$url>here</A>.\n";
                    334:        print &html_footer;
                    335:        exit(1);
                    336: }
                    337:
                    338: sub safeglob {
                    339:        local($filename) = @_;
                    340:        local($dirname);
                    341:        local(@results);
                    342:
                    343:        ($dirname = $filename) =~ s|/[^/]+$||;
                    344:        $filename =~ s|.*/||;
                    345:
                    346:        if (opendir(DIR, $dirname)) {
                    347:                $glob = $filename;
                    348:        #       transform filename from glob to regex.  Deal with:
                    349:        #       [, {, ?, * as glob chars
                    350:        #       make sure to escape all other regex chars
                    351:                $glob =~ s/([\.\(\)\|\+])/\\$1/g;
                    352:                $glob =~ s/\*/.*/g;
                    353:                $glob =~ s/\?/./g;
                    354:                $glob =~ s/{([^}]+)}/($t = $1) =~ s-,-|-g; "($t)"/eg;
                    355:                foreach (readdir(DIR)) {
                    356:                        if (/^${glob}$/) {
                    357:                                push(@results, $dirname . "/" .$_);
                    358:                        }
                    359:                }
                    360:        }
                    361:
                    362:        @results;
                    363: }
                    364:
                    365: sub checkout {
                    366:        local($fullname, $rev) = @_;
                    367:
                    368:        open(RCS, "co -p$rev '$fullname' 2>&1 |") ||
                    369:            &fail("500 Internal Error", "Couldn't co: $!");
                    370: # /home/ncvs/src/sys/netinet/igmp.c,v  -->  standard output
                    371: # or
                    372: # /home/ncvs/src/sys/netinet/igmp.c,v  -->  stdout
                    373: # revision 1.1.1.2
                    374: # /*
                    375:        $_ = <RCS>;
                    376:        if (/^(\S+),v\s+-->\s+st(andar)?d ?out(put)?\s*$/o && $1 eq $fullname) {
                    377:            # As expected
                    378:        } else {
                    379:            &fatal("500 Internal Error",
                    380:                "Unexpected output from co: $_");
                    381:        }
                    382:        $_ = <RCS>;
                    383:        if (/^revision\s+$rev\s*$/) {
                    384:            # As expected
                    385:        } else {
                    386:            &fatal("500 Internal Error",
                    387:                "Unexpected output from co: $_");
                    388:        }
                    389:        $| = 1;
                    390:        print "Content-type: text/plain\n\n";
                    391:        print <RCS>;
                    392:        close(RCS);
                    393: }
                    394:
                    395: sub dodiff {
                    396:        local($fullname, $r1, $tr1, $r2, $tr2, $f) = @_;
                    397:
                    398:        if ($r1 =~ /([^:]+)(:(.+))?/) {
                    399:            $rev1 = $1;
                    400:            $sym1 = $3;
                    401:        }
                    402:        if ($rev1 eq 'text') {
                    403:            $rev1 = $tr1;
                    404:        }
                    405:        if ($r2 =~ /([^:]+)(:(.+))?/) {
                    406:            $rev2 = $1;
                    407:            $sym2 = $3;
                    408:        }
                    409:        if ($rev2 eq 'text') {
                    410:            $rev2 = $tr2;
                    411:        }
                    412:        if (!($rev1 =~ /^[\d\.]+$/) || !($rev2 =~ /^[\d\.]+$/)) {
                    413:            &fatal("404 Not Found",
                    414:                    "Malformed query \"$ENV{'QUERY_STRING'}\"");
                    415:        }
                    416: #
                    417: # rev1 and rev2 are now both numeric revisions.
                    418: # Thus we do a DWIM here and swap them if rev1 is after rev2.
                    419: # XXX should we warn about the fact that we do this?
                    420:        if (&revcmp($rev1,$rev2) > 0) {
                    421:            ($tmp1, $tmp2) = ($rev1, $sym1);
                    422:            ($rev1, $sym1) = ($rev2, $sym2);
                    423:            ($rev2, $sym2) = ($tmp1, $tmp2);
                    424:        }
                    425: #
                    426: #      XXX Putting '-p' here is a personal preference
                    427:        if ($f eq 'c') {
                    428:            $difftype = '-p -c';
                    429:            $diffname = "Context diff";
                    430:        } elsif ($f eq 's') {
                    431:            $difftype = '--side-by-side --width=164';
                    432:            $diffname = "Side by Side";
                    433:        } else {
                    434:            $difftype = '-p -u';
                    435:            $diffname = "Unidiff";
                    436:        }
                    437: # XXX should this just be text/plain
                    438: # or should it have an HTML header and then a <pre>
                    439:        print "Content-type: text/plain\n\n";
                    440:        open(RCSDIFF, "rcsdiff $difftype -r$rev1 -r$rev2 '$fullname' 2>&1 |") ||
                    441:            &fail("500 Internal Error", "Couldn't rcsdiff: $!");
                    442: #
                    443: #===================================================================
                    444: #RCS file: /home/ncvs/src/sys/netinet/tcp_output.c,v
                    445: #retrieving revision 1.16
                    446: #retrieving revision 1.17
                    447: #diff -c -r1.16 -r1.17
                    448: #*** /home/ncvs/src/sys/netinet/tcp_output.c     1995/11/03 22:08:08     1.16
                    449: #--- /home/ncvs/src/sys/netinet/tcp_output.c     1995/12/05 17:46:35     1.17
                    450: #
                    451: # Ideas:
                    452: # - nuke the stderr output if it's what we expect it to be
                    453: # - Add "no differences found" if the diff command supplied no output.
                    454: #
                    455: #*** src/sys/netinet/tcp_output.c     1995/11/03 22:08:08     1.16
                    456: #--- src/sys/netinet/tcp_output.c     1995/12/05 17:46:35     1.17 RELENG_2_1_0
                    457: # (bogus example, but...)
                    458: #
                    459:        if ($difftype eq '-u') {
                    460:            $f1 = '---';
                    461:            $f2 = '\+\+\+';
                    462:        } else {
                    463:            $f1 = '\*\*\*';
                    464:            $f2 = '---';
                    465:        }
                    466:        while (<RCSDIFF>) {
                    467:            if (m|^$f1 $cvsroot|o) {
                    468:                s|$cvsroot/||o;
                    469:                if ($sym1) {
                    470:                    chop;
                    471:                    $_ .= " " . $sym1 . "\n";
                    472:                }
                    473:            } elsif (m|^$f2 $cvsroot|o) {
                    474:                s|$cvsroot/||o;
                    475:                if ($sym2) {
                    476:                    chop;
                    477:                    $_ .= " " . $sym2 . "\n";
                    478:                }
                    479:            }
                    480:            print $_;
                    481:        }
                    482:        close(RCSDIFF);
                    483: }
                    484:
                    485: sub dolog {
                    486:        local($fullname) = @_;
                    487:        local($curbranch,$symnames);    #...
                    488:
                    489:        print("Going to rlog '$fullname'\n") if ($verbose);
1.1       jfieber   490:        open(RCS, "rlog '$fullname'|") || &fatal("500 Internal Error",
                    491:                                                "Failed to spawn rlog");
                    492:        while (<RCS>) {
                    493:            print if ($verbose);
1.8       fenner    494:            if (/^branch:\s+([\d\.]+)/) {
                    495:                $curbranch = $1;
                    496:            }
1.1       jfieber   497:            if ($symnames) {
                    498:                if (/^\s+([^:]+):\s+([\d\.]+)/) {
                    499:                    $symrev{$1} = $2;
                    500:                    if ($revsym{$2}) {
                    501:                        $revsym{$2} .= ", ";
                    502:                    }
                    503:                    $revsym{$2} .= $1;
                    504:                } else {
                    505:                    $symnames = 0;
                    506:                }
                    507:            } elsif (/^symbolic names/) {
                    508:                $symnames = 1;
                    509:            } elsif (/^-----/) {
                    510:                last;
                    511:            }
                    512:        }
1.7       fenner    513:
                    514:        if ($onlyonbranch = $input{'only_on_branch'}) {
                    515:            ($onlyonbranch = $symrev{$onlyonbranch}) =~ s/\.0\././;
                    516:            ($onlybranchpoint = $onlyonbranch) =~ s/\.\d+$//;
                    517:        }
                    518:
1.1       jfieber   519: # each log entry is of the form:
                    520: # ----------------------------
                    521: # revision 3.7.1.1
                    522: # date: 1995/11/29 22:15:52;  author: fenner;  state: Exp;  lines: +5 -3
                    523: # log info
                    524: # ----------------------------
                    525:        logentry:
                    526:        while (!/^=========/) {
                    527:            $_ = <RCS>;
1.12      fenner    528:            last logentry if (!defined($_));    # EOF
1.1       jfieber   529:            print "R:", $_ if ($verbose);
                    530:            if (/^revision ([\d\.]+)/) {
                    531:                $rev = $1;
                    532:            } elsif (/^========/ || /^----------------------------$/) {
                    533:                next logentry;
                    534:            } else {
1.12      fenner    535:                # The rlog output is syntactically ambiguous.  We must
                    536:                # have guessed wrong about where the end of the last log
                    537:                # message was.
                    538:                # Since this is likely to happen when people put rlog output
                    539:                # in their commit messages, don't even bother keeping
                    540:                # these lines since we don't know what revision they go with
                    541:                # any more.
                    542:                next logentry;
                    543: #              &fatal("500 Internal Error","Error parsing RCS output: $_");
1.1       jfieber   544:            }
                    545:            $_ = <RCS>;
                    546:            print "D:", $_ if ($verbose);
1.9       fenner    547:            if (m|^date:\s+(\d+)/(\d+)/(\d+)\s+(\d+):(\d+):(\d+);\s+author:\s+(\S+);\s+state:\s+(\S+);|) {
1.1       jfieber   548:                $yr = $1;
                    549:                # damn 2-digit year routines
                    550:                if ($yr > 100) {
                    551:                    $yr -= 1900;
                    552:                }
                    553:                $date{$rev} = &timelocal($6,$5,$4,$3,$2 - 1,$yr);
                    554:                $author{$rev} = $7;
1.9       fenner    555:                $state{$rev} = $8;
1.1       jfieber   556:            } else {
                    557:                &fatal("500 Internal Error", "Error parsing RCS output: $_");
                    558:            }
                    559:            line:
                    560:            while (<RCS>) {
                    561:                print "L:", $_ if ($verbose);
                    562:                next line if (/^branches:\s/);
                    563:                last line if (/^----------------------------$/ || /^=========/);
                    564:                $log{$rev} .= $_;
                    565:            }
                    566:            print "E:", $_ if ($verbose);
                    567:        }
                    568:        close(RCS);
                    569:        print "Done reading RCS file\n" if ($verbose);
                    570: #
                    571: # Sort the revisions into commit-date order.
                    572:        @revorder = sort {$date{$b} <=> $date{$a}} keys %date;
                    573:        print "Done sorting revisions\n" if ($verbose);
                    574: #
                    575: # HEAD is an artificial tag which is simply the highest tag number on the main
1.8       fenner    576: # branch, unless there is a branch tag in the RCS file in which case it's the
                    577: # highest revision on that branch.  Find it by looking through @revorder; it
                    578: # is the first commit listed on the appropriate branch.
                    579:        $headrev = $curbranch || "1";
1.1       jfieber   580:        revision:
                    581:        for ($i = 0; $i <= $#revorder; $i++) {
1.8       fenner    582:            if ($revorder[$i] =~ /^(\S*)\.\d+$/ && $headrev eq $1) {
1.1       jfieber   583:                if ($revsym{$revorder[$i]}) {
                    584:                    $revsym{$revorder[$i]} .= ", ";
                    585:                }
                    586:                $revsym{$revorder[$i]} .= "HEAD";
                    587:                $symrev{"HEAD"} = $revorder[$i];
                    588:                last revision;
                    589:            }
                    590:        }
                    591:        print "Done finding HEAD\n" if ($verbose);
                    592: #
                    593: # Now that we know all of the revision numbers, we can associate
                    594: # absolute revision numbers with all of the symbolic names, and
                    595: # pass them to the form so that the same association doesn't have
                    596: # to be built then.
                    597: #
                    598: # should make this a case-insensitive sort
                    599:        foreach (sort keys %symrev) {
                    600:            $rev = $symrev{$_};
                    601:            if ($rev =~ /^(\d+(\.\d+)+)\.0\.(\d+)$/) {
1.7       fenner    602:                push(@branchnames, $_);
1.1       jfieber   603:                #
                    604:                # A revision number of A.B.0.D really translates into
                    605:                # "the highest current revision on branch A.B.D".
                    606:                #
                    607:                # If there is no branch A.B.D, then it translates into
                    608:                # the head A.B .
                    609:                #
                    610:                $head = $1;
                    611:                $branch = $3;
                    612:                $regex = $head . "." . $branch;
                    613:                $regex =~ s/\./\./g;
                    614:                #             <
                    615:                #           \____/
                    616:                $rev = $head;
                    617:
                    618:                revision:
                    619:                foreach $r (@revorder) {
                    620:                    if ($r =~ /^${regex}/) {
                    621:                        $rev = $head . "." . $branch;
                    622:                        last revision;
                    623:                    }
                    624:                }
                    625:                $revsym{$rev} .= ", " if ($revsym{$rev});
                    626:                $revsym{$rev} .= $_;
1.8       fenner    627:                if ($rev ne $head) {
                    628:                    $branchpoint{$head} .= ", " if ($branchpoint{$head});
                    629:                    $branchpoint{$head} .= $_;
                    630:                }
1.1       jfieber   631:            }
                    632:            $sel .= "<OPTION VALUE=\"${rev}:${_}\">$_\n";
                    633:        }
                    634:        print "Done associating revisions with branches\n" if ($verbose);
1.2       jfieber   635:         print &html_header("CVS log for $where");
1.9       fenner    636:        ($upwhere = $where) =~ s|(Attic/)?[^/]+$||;
                    637:        print "Up to ", &link($upwhere,$scriptname . "/" . $upwhere . $query);
1.1       jfieber   638:        print "<BR>\n";
                    639:        print "<A HREF=\"#diff\">Request diff between arbitrary revisions</A>\n";
1.2       jfieber   640:        print "<HR NOSHADE>\n";
1.8       fenner    641:        if ($curbranch) {
                    642:            print "Default branch is ";
                    643:            print ($revsym{$curbranch} || $curbranch);
                    644:        } else {
                    645:            print "No default branch";
                    646:        }
                    647:        print "<BR><HR NOSHADE>\n";
1.1       jfieber   648: # The other possible U.I. I can see is to have each revision be hot
                    649: # and have the first one you click do ?r1=foo
                    650: # and since there's no r2 it keeps going & the next one you click
                    651: # adds ?r2=foo and performs the query.
                    652: # I suppose there's no reason we can't try both and see which one
                    653: # people prefer...
                    654:
                    655:        for ($i = 0; $i <= $#revorder; $i++) {
                    656:            $_ = $revorder[$i];
1.7       fenner    657:            ($br = $_) =~ s/\.\d+$//;
                    658:            next if ($onlyonbranch && $br ne $onlyonbranch &&
                    659:                                            $_ ne $onlybranchpoint);
1.4       fenner    660:            print "<a NAME=\"rev$_\"></a>";
                    661:            foreach $sym (split(", ", $revsym{$_})) {
                    662:                print "<a NAME=\"$sym\"></a>";
                    663:            }
                    664:            if ($revsym{$br} && !$nameprinted{$br}) {
                    665:                foreach $sym (split(", ", $revsym{$br})) {
                    666:                    print "<a NAME=\"$sym\"></a>";
                    667:                }
                    668:                $nameprinted{$br}++;
                    669:            }
                    670:            print "\n";
1.10      wosch     671:            print "<A HREF=\"$scriptwhere?rev=$_" .
1.12      fenner    672:                &cvsroot . "\"><b>$_</b></A>";
1.1       jfieber   673:            if (/^1\.1\.1\.\d+$/) {
                    674:                print " <i>(vendor branch)</i>";
                    675:            }
1.14      wosch     676:            print " <i>" . &ctime($date{$_}) . " UTC</i> by ";
1.1       jfieber   677:            print "<i>" . $author{$_} . "</i>\n";
                    678:            if ($revsym{$_}) {
                    679:                print "<BR>CVS Tags: <b>$revsym{$_}</b>";
                    680:            }
1.4       fenner    681:            if ($revsym{$br})  {
1.1       jfieber   682:                if ($revsym{$_}) {
                    683:                    print "; ";
                    684:                } else {
                    685:                    print "<BR>";
                    686:                }
1.8       fenner    687:                print "Branch: <b>$revsym{$br}</b>\n";
                    688:            }
                    689:            if ($branchpoint{$_}) {
                    690:                if ($revsym{$br} || $revsym{$_}) {
                    691:                    print "; ";
                    692:                } else {
                    693:                    print "<BR>";
                    694:                }
                    695:                print "Branch point for: <b>$branchpoint{$_}</b>\n";
1.1       jfieber   696:            }
                    697:            # Find the previous revision on this branch.
                    698:            @prevrev = split(/\./, $_);
                    699:            if (--$prevrev[$#prevrev] == 0) {
                    700:                # If it was X.Y.Z.1, just make it X.Y
                    701:                if ($#prevrev > 1) {
                    702:                    pop(@prevrev);
                    703:                    pop(@prevrev);
                    704:                } else {
                    705:                    # It was rev 1.1 (XXX does CVS use revisions
                    706:                    # greater than 1.x?)
                    707:                    if ($prevrev[0] != 1) {
                    708:                        print "<i>* I can't figure out the previous revision! *</i>\n";
                    709:                    }
                    710:                }
                    711:            }
                    712:            if ($prevrev[$#prevrev] != 0) {
                    713:                $prev = join(".", @prevrev);
1.7       fenner    714:                print "<BR><A HREF=\"${scriptwhere}.diff?r1=$prev";
1.12      fenner    715:                print "&r2=$_" . &cvsroot . "\">Diffs to $prev</A>\n";
1.1       jfieber   716:                #
                    717:                # Plus, if it's on a branch, and it's not a vendor branch,
                    718:                # offer to diff with the immediately-preceding commit if it
                    719:                # is not the previous revision as calculated above
                    720:                # and if it is on the HEAD (or at least on a higher branch)
                    721:                # (e.g. change gets committed and then brought
                    722:                # over to -stable)
                    723:                if (!/^1\.1\.1\.\d+$/ && ($i != $#revorder) &&
                    724:                                        ($prev ne $revorder[$i+1])) {
                    725:                    @tmp1 = split(/\./, $revorder[$i+1]);
                    726:                    @tmp2 = split(/\./, $_);
                    727:                    if ($#tmp1 < $#tmp2) {
1.7       fenner    728:                        print "; <A HREF=\"${scriptwhere}.diff?r1=$revorder[$i+1]";
1.10      wosch     729:                        print "&r2=$_" . &cvsroot .
1.12      fenner    730:                             "\">Diffs to $revorder[$i+1]</A>\n";
1.1       jfieber   731:                    }
                    732:                }
                    733:            }
1.9       fenner    734:            if ($state{$_} eq "dead") {
                    735:                print "<BR><B><I>FILE REMOVED</I></B>\n";
                    736:            }
1.1       jfieber   737:            print "<PRE>\n";
1.7       fenner    738:            print &htmlify($log{$_}, 1);
1.2       jfieber   739:            print "</PRE><HR NOSHADE>\n";
1.1       jfieber   740:        }
                    741:        print "<A NAME=diff>\n";
                    742:        print "This form allows you to request diff's between any two\n";
                    743:        print "revisions of a file.  You may select a symbolic revision\n";
                    744:        print "name using the selection box or you may type in a numeric\n";
                    745:        print "name using the type-in text box.\n";
                    746:        print "</A><P>\n";
1.7       fenner    747:        print "<FORM METHOD=\"GET\" ACTION=\"${scriptwhere}.diff\">\n";
1.12      fenner    748:         print "<INPUT TYPE=HIDDEN NAME=\"cvsroot\" VALUE=\"$cvstree\">\n"
1.10      wosch     749:              if &cvsroot;
1.1       jfieber   750:        print "Diffs between \n";
                    751:        print "<SELECT NAME=\"r1\">\n";
                    752:        print "<OPTION VALUE=\"text\" SELECTED>Use Text Field\n";
                    753:        print $sel;
                    754:        print "</SELECT>\n";
                    755:        print "<INPUT TYPE=\"TEXT\" NAME=\"tr1\" VALUE=\"$revorder[$#revorder]\">\n";
                    756:        print " and \n";
                    757:        print "<SELECT NAME=\"r2\">\n";
                    758:        print "<OPTION VALUE=\"text\" SELECTED>Use Text Field\n";
                    759:        print $sel;
                    760:        print "</SELECT>\n";
                    761:        print "<INPUT TYPE=\"TEXT\" NAME=\"tr2\" VALUE=\"$revorder[0]\">\n";
                    762:        print "<BR><INPUT TYPE=RADIO NAME=\"f\" VALUE=u CHECKED>Unidiff<br>\n";
                    763:        print "<INPUT TYPE=RADIO NAME=\"f\" VALUE=c>Context diff<br>\n";
1.7       fenner    764:        print "<INPUT TYPE=RADIO NAME=\"f\" VALUE=s>Side-by-Side<br>\n";
1.1       jfieber   765:        print "<INPUT TYPE=SUBMIT VALUE=\"Get Diffs\">\n";
                    766:        print "</FORM>\n";
1.7       fenner    767:        print "<HR noshade>\n";
                    768:        print "<A name=branch>\n";
                    769:        print "You may select to see revision information from only\n";
                    770:        print "a single branch.\n";
                    771:        print "</A><P>\n";
                    772:        print "<FORM METHOD=\"GET\" ACTION=\"$scriptwhere\">\n";
1.10      wosch     773:         print qq{<input type=hidden name=cvsroot value=$cvstree>\n}
                    774:              if &cvsroot;
1.7       fenner    775:        print "Branch: \n";
                    776:        print "<SELECT NAME=\"only_on_branch\">\n";
1.9       fenner    777:        print "<OPTION VALUE=\"\"";
                    778:        print " SELECTED" if ($input{"only_on_branch"} eq "");
                    779:        print ">Show all branches\n";
1.7       fenner    780:        foreach (sort @branchnames) {
1.9       fenner    781:                print "<OPTION";
                    782:                print " SELECTED" if ($input{"only_on_branch"} eq $_);
                    783:                print ">${_}\n";
1.7       fenner    784:        }
                    785:        print "</SELECT>\n";
                    786:        print "<INPUT TYPE=SUBMIT VALUE=\"View Branch\">\n";
                    787:        print "</FORM>\n";
1.2       jfieber   788:         print &html_footer;
1.1       jfieber   789:        print "</BODY></HTML>\n";
1.10      wosch     790: }
                    791:
                    792: sub cvsroot {
                    793:     return '' if $cvstree eq $cvstreedefault;
                    794:     return "&cvsroot=" . $cvstree;
1.1       jfieber   795: }

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