add directory study

This commit is contained in:
gohigh
2024-02-19 00:25:23 -05:00
parent b1306b38b1
commit f3774e2f8c
4001 changed files with 2285787 additions and 0 deletions

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Library General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.
Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.
You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:
a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change.
b) You must cause any work that you distribute or publish, that in
whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License.
c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works. But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.
In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.
3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:
a) Accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of Sections
1 and 2 above on a medium customarily used for software interchange; or,
b) Accompany it with a written offer, valid for at least three
years, to give any third party, for a charge no more than your
cost of physically performing source distribution, a complete
machine-readable copy of the corresponding source code, to be
distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
c) Accompany it with the information you received as to the offer
to distribute corresponding source code. (This alternative is
allowed only for noncommercial distribution and only if you
received the program in object code or executable form with such
an offer, in accord with Subsection b above.)
The source code for a work means the preferred form of the work for
making modifications to it. For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable. However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.
If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.
5. You are not required to accept this License, since you have not
signed it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are
prohibited by law if you do not accept this License. Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions. You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.
7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.
If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.
It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices. Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation. If the Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
Foundation.
10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission. For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this. Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
Appendix: How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) 19yy <name of author>
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 of the License, 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; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) 19yy name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.

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# $Id: Common.pm,v 1.6 1998/05/14 11:59:22 argggh Exp $
package LXR::Common;
use DB_File;
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(&warning &fatal &abortall &fflush &urlargs
&fileref &idref &htmlquote &freetextmarkup &markupfile
&init &makeheader &makefooter &expandtemplate);
$wwwdebug = 1;
$SIG{__WARN__} = 'warning';
$SIG{__DIE__} = 'fatal';
@cterm = ('atom', '\\\\.', '',
'comment', '/\*', '\*/',
'comment', '//', "\n",
'string', '"', '"',
'string', "'", "'",
'include', '#include', "\n");
sub warning {
print(STDERR "[",scalar(localtime),"] warning: $_[0]\n");
print("<h4 align=\"center\"><i>** Warning: $_[0]</i></h4>\n") if $wwwdebug;
}
sub fatal {
print(STDERR "[",scalar(localtime),"] fatal: $_[0]\n");
print("<h4 align=\"center\"><i>** Fatal: $_[0]</i></h4>\n") if $wwwdebug;
exit(1);
}
sub abortall {
print(STDERR "[",scalar(localtime),"] abortall: $_[0]\n");
print("Content-Type: text/html\n\n",
"<html>\n<head>\n<title>Abort</title>\n</head>\n",
"<body><h1>Abort!</h1>\n",
"<b><i>** Aborting: $_[0]</i></b>\n",
"</body>\n</html>\n") if $wwwdebug;
exit(1);
}
sub fflush {
$| = 1; print('');
}
sub urlargs {
my @args = @_;
my %args = ();
my $val;
foreach (@args) {
$args{$1} = $2 if /(\S+)=(\S*)/;
}
@args = ();
foreach ($Conf->allvariables) {
$val = $args{$_} || $Conf->variable($_);
push(@args, "$_=$val") unless ($val eq $Conf->vardefault($_));
delete($args{$_});
}
foreach (keys(%args)) {
push(@args, "$_=$args{$_}");
}
return($#args < 0 ? '' : '?'.join(';',@args));
}
sub fileref {
my ($desc, $path, $line, @args) = @_;
return("<a href=\"source$path".
&urlargs(@args).
($line > 0 ? "#L$line" : "").
"\"\>$desc</a>");
}
sub diffref {
my ($desc, $path, $darg) = @_;
($darg,$dval) = $darg =~ /(.*?)=(.*)/;
return("<a href=\"diff$path".
&urlargs(($darg ? "diffvar=$darg" : ""),
($dval ? "diffval=$dval" : ""),
@args).
"\"\>$desc</a>");
}
sub idref {
my ($desc, $id, @args) = @_;
return("<a href=\"ident".
&urlargs(($id ? "i=$id" : ""),
@args).
"\"\>$desc</a>");
}
sub http_wash {
my $t = shift;
$t =~ s/\+/ /g;
$t =~ s/\%([\da-f][\da-f])/pack("C", hex($1))/gie;
# Paranoia check. Regexp-searches in Glimpse won't work.
# if ($t =~ tr/;<>*|\`&$!#()[]{}:\'\"//) {
# Should be sufficient to keep "open" from doing unexpected stuff.
if ($t =~ tr/<>|\"\'\`//) {
&abortall("Illegal characters in HTTP-parameters.");
}
return($t);
}
sub markspecials {
$_[0] =~ s/([\&\<\>])/\0$1/g;
}
sub htmlquote {
$_[0] =~ s/\0&/&amp;/g;
$_[0] =~ s/\0</&lt;/g;
$_[0] =~ s/\0>/&gt;/g;
}
sub freetextmarkup {
$_[0] =~ s#((ftp|http)://\S*[^\s.])#<a href=\"$1\">$1</a>#g;
$_[0] =~ s/(&lt;(.*@.*)&gt;)/<a href=\"mailto:$2\">$1<\/a>/g;
}
sub linetag {
#$frag =~ s/\n/"\n".&linetag($virtp.$fname, $line)/ge;
# my $tag = '<a href="'.$_[0].'#L'.$_[1].
# '" name="L'.$_[1].'">'.$_[1].' </a>';
my $tag;
$tag .= ' ' if $_[1] < 10;
$tag .= ' ' if $_[1] < 100;
$tag .= &fileref($_[1], $_[0], $_[1]).' ';
$tag =~ s/<a/<a name=L$_[1]/;
# $_[1]++;
return($tag);
}
sub markupfile {
my ($INFILE, $virtp, $fname, $outfun) = @_;
$line = 1;
# A C/C++ file
if ($fname =~ /\.([ch]|cpp?|cc)$/i) { # Duplicated in genxref.
&SimpleParse::init($INFILE, @cterm);
tie (%xref, "DB_File", $Conf->dbdir."/xref", O_RDONLY, 0664, $DB_HASH)
|| &warning("Cannot open xref database.");
&$outfun(# "<pre>\n".
#"<a name=\"L".$line++.'"></a>');
&linetag($virtp.$fname, $line++));
($btype, $frag) = &SimpleParse::nextfrag;
while (defined($frag)) {
&markspecials($frag);
if ($btype eq 'comment') {
# Comment
# Convert mail adresses to mailto:
&freetextmarkup($frag);
$frag = "<b><i>$frag</i></b>";
$frag =~ s#\n#</i></b>\n<b><i>#g;
} elsif ($btype eq 'string') {
# String
$frag = "<i>$frag</i>";
} elsif ($btype eq 'include') {
# Include directive
$frag =~ s#\"(.*)\"#
'"'.&fileref($1, $virtp.$1).'"'#e;
$frag =~ s#&lt;(.*)&gt;#
"&lt;".&fileref
($1,
$Conf->mappath($Conf->incprefix."/$1")).
"&gt;"#e;
} else {
# Code
$frag =~ s#(^|[^a-zA-Z_\#0-9])([a-zA-Z_~][a-zA-Z0-9_]*)\b#
"$1".(defined($xref{$2}) ?
&idref($2,$2) :
"$2")#ge;
}
&htmlquote($frag);
$frag =~ s/\n/"\n".&linetag($virtp.$fname, $line++)/ge;
&$outfun($frag);
($btype, $frag) = &SimpleParse::nextfrag;
}
# &$outfun("</pre>\n");
untie(%xref);
} elsif ($fname =~ /\.(gif|jpg)$/) {
&$outfun("<img src=\"http:source".$virtp.$fname. &urlargs("raw=1").
"\" border=0 alt=\"$fname\" align=middle>\n");
} elsif ($fname eq 'CREDITS') {
while (<$INFILE>) {
&SimpleParse::untabify($_);
&markspecials($_);
&htmlquote($_);
s/^N:\s+(.*)/<hr>\n<h3>$1<\/h3>/gm;
s/^(E:\s+)(\S+@\S+)/$1<a href=\"mailto:$2\">$2<\/a>/gm;
s/^(W:\s+)(.*)/$1<a href=\"$2\">$2<\/a>/gm;
# &$outfun("<a name=\"L$.\"><\/a>".$_);
&$outfun(&linetag($virtp.$fname, $.).$_);
}
} else {
while (<$INFILE>) {
&SimpleParse::untabify($_);
&markspecials($_);
&htmlquote($_);
&freetextmarkup($_);
# &$outfun("<a name=\"L$.\"><\/a>".$_);
&$outfun(&linetag($virtp.$fname, $.).$_);
}
}
}
sub fixpaths {
$Path->{'virtf'} = '/'.shift;
$Path->{'root'} = $Conf->sourceroot;
while ($Path->{'virtf'} =~ s#/[^/]+/\.\./#/#g) {
}
$Path->{'virtf'} =~ s#/\.\./#/#g;
$Path->{'virtf'} .= '/' if (-d $Path->{'root'}.$Path->{'virtf'});
$Path->{'virtf'} =~ s#//+#/#g;
($Path->{'virt'}, $Path->{'file'}) = $Path->{'virtf'} =~ m#^(.*/)([^/]*)$#;
$Path->{'real'} = $Path->{'root'}.$Path->{'virt'};
$Path->{'realf'} = $Path->{'root'}.$Path->{'virtf'};
@pathelem = $Path->{'virtf'} =~ /([^\/]+$|[^\/]+\/)/g;
$fpath = '';
foreach (@pathelem) {
$fpath .= $_;
push(@addrelem, $fpath);
}
unshift(@pathelem, $Conf->sourcerootname.'/');
unshift(@addrelem, "");
foreach (0..$#pathelem) {
if (defined($addrelem[$_])) {
$Path->{'xref'} .= &fileref($pathelem[$_], "/$addrelem[$_]");
} else {
$Path->{'xref'} .= $pathelem[$_];
}
}
$Path->{'xref'} =~ s#/</a>#</a>/#gi;
}
sub init {
my @a;
$HTTP->{'path_info'} = &http_wash($ENV{'PATH_INFO'});
$HTTP->{'this_url'} = &http_wash(join('', 'http://',
$ENV{'SERVER_NAME'},
':', $ENV{'SERVER_PORT'},
$ENV{'SCRIPT_NAME'},
$ENV{'PATH_INFO'},
'?', $ENV{'QUERY_STRING'}));
foreach ($ENV{'QUERY_STRING'} =~ /([^;&=]+)(?:=([^;&]+)|)/g) {
push(@a, &http_wash($_));
}
$HTTP->{'param'} = {@a};
$HTTP->{'param'}->{'v'} ||= $HTTP->{'param'}->{'version'};
$HTTP->{'param'}->{'a'} ||= $HTTP->{'param'}->{'arch'};
$HTTP->{'param'}->{'i'} ||= $HTTP->{'param'}->{'identifier'};
$identifier = $HTTP->{'param'}->{'i'};
$readraw = $HTTP->{'param'}->{'raw'};
if (defined($readraw)) {
print("\n");
} else {
print("Content-Type: text/html\n\n");
}
$Conf = new LXR::Config;
foreach ($Conf->allvariables) {
$Conf->variable($_, $HTTP->{'param'}->{$_}) if $HTTP->{'param'}->{$_};
}
&fixpaths($HTTP->{'path_info'} || $HTTP->{'param'}->{'file'});
if (defined($readraw)) {
open(RAW, $Path->{'realf'});
while (<RAW>) {
print;
}
close(RAW);
exit;
}
return($Conf, $HTTP, $Path);
}
sub expandtemplate {
my ($templ, %expfunc) = @_;
my ($expfun, $exppar);
while ($templ =~ s/(\{[^\{\}]*)\{([^\{\}]*)\}/$1\01$2\02/s) {}
$templ =~ s/(\$(\w+)(\{([^\}]*)\}|))/{
if (defined($expfun = $expfunc{$2})) {
if ($3 eq '') {
&$expfun;
} else {
$exppar = $4;
$exppar =~ s#\01#\{#gs;
$exppar =~ s#\02#\}#gs;
&$expfun($exppar);
}
} else {
$1;
}
}/ges;
$templ =~ s/\01/\{/gs;
$templ =~ s/\02/\}/gs;
return($templ);
}
# What follows is a pretty hairy way of expanding nested templates.
# State information is passed via localized variables.
# The first one is simple, the "banner" template is empty, so we
# simply return an appropriate value.
sub bannerexpand {
if ($who eq 'source' || $who eq 'diff') {
return($Path->{'xref'});
} else {
return('');
}
}
sub titleexpand {
if ($who eq 'source' || $who eq 'diff') {
return($Conf->sourcerootname.$Path->{'virtf'});
} elsif ($who eq 'ident') {
my $i = $HTTP->{'param'}->{'i'};
return($Conf->sourcerootname.' identfier search'.
($i ? " \"$i\"" : ''));
} elsif ($who eq 'search') {
my $s = $HTTP->{'param'}->{'string'};
return($Conf->sourcerootname.' freetext search'.
($s ? " \"$s\"" : ''));
} elsif ($who eq 'find') {
my $s = $HTTP->{'param'}->{'string'};
return($Conf->sourcerootname.' file search'.
($s ? " \"$s\"" : ''));
}
}
sub thisurl {
my $url = $HTTP->{'this_url'};
$url =~ s/([\?\&\;\=])/sprintf('%%%02x',(unpack('c',$1)))/ge;
return($url);
}
sub baseurl {
return($Conf->baseurl);
}
# This one isn't too bad either. We just expand the "modes" template
# by filling in all the relevant values in the nested "modelink"
# template.
sub modeexpand {
my $templ = shift;
my $modex = '';
my @mlist = ();
local $mode;
if ($who eq 'source') {
push(@mlist, "<b><i>source navigation</i></b>");
} else {
push(@mlist, &fileref("source navigation", $Path->{'virtf'}));
}
if ($who eq 'diff') {
push(@mlist, "<b><i>diff markup</i></b>");
} elsif ($who eq 'source' && $Path->{'file'}) {
push(@mlist, &diffref("diff markup", $Path->{'virtf'}));
}
if ($who eq 'ident') {
push(@mlist, "<b><i>identifier search</i></b>");
} else {
push(@mlist, &idref("identifier search", ""));
}
if ($who eq 'search') {
push(@mlist, "<b><i>freetext search</i></b>");
} else {
push(@mlist, "<a href=\"search".
&urlargs."\">freetext search</a>");
}
if ($who eq 'find') {
push(@mlist, "<b><i>file search</i></b>");
} else {
push(@mlist, "<a href=\"find".
&urlargs."\">file search</a>");
}
foreach $mode (@mlist) {
$modex .= &expandtemplate($templ,
('modelink', sub { return($mode) }));
}
return($modex);
}
# This is where it gets a bit tricky. varexpand expands the
# "variables" template using varname and varlinks, the latter in turn
# expands the nested "varlinks" template using varval.
sub varlinks {
my $templ = shift;
my $vlex = '';
my ($val, $oldval);
local $vallink;
$oldval = $Conf->variable($var);
foreach $val ($Conf->varrange($var)) {
if ($val eq $oldval) {
$vallink = "<b><i>$val</i></b>";
} else {
if ($who eq 'source') {
$vallink = &fileref($val,
$Conf->mappath($Path->{'virtf'},
"$var=$val"),
0,
"$var=$val");
} elsif ($who eq 'diff') {
$vallink = &diffref($val, $Path->{'virtf'}, "$var=$val");
} elsif ($who eq 'ident') {
$vallink = &idref($val, $identifier, "$var=$val");
} elsif ($who eq 'search') {
$vallink = "<a href=\"search".
&urlargs("$var=$val",
"string=".$HTTP->{'param'}->{'string'}).
"\">$val</a>";
} elsif ($who eq 'find') {
$vallink = "<a href=\"find".
&urlargs("$var=$val",
"string=".$HTTP->{'param'}->{'string'}).
"\">$val</a>";
}
}
$vlex .= &expandtemplate($templ,
('varvalue', sub { return($vallink) }));
}
return($vlex);
}
sub varexpand {
my $templ = shift;
my $varex = '';
local $var;
foreach $var ($Conf->allvariables) {
$varex .= &expandtemplate($templ,
('varname', sub {
return($Conf->vardescription($var))}),
('varlinks', \&varlinks));
}
return($varex);
}
sub makeheader {
local $who = shift;
if ($Conf->htmlhead && !open(TEMPL, $Conf->htmlhead)) {
&warning("Template ".$Conf->htmlhead." does not exist.");
$template ||= "<html><body>\n<hr>\n";
} else {
$save = $/; undef($/);
$template = <TEMPL>;
$/ = $save;
close(TEMPL);
}
print(
#"<!doctype html public \"-//W3C//DTD HTML 3.2//EN\">\n",
# "<html>\n",
# "<head>\n",
# "<title>",$Conf->sourcerootname," Cross Reference</title>\n",
# "<base href=\"",$Conf->baseurl,"\">\n",
# "</head>\n",
&expandtemplate($template,
('title', \&titleexpand),
('banner', \&bannerexpand),
('baseurl', \&baseurl),
('thisurl', \&thisurl),
('modes', \&modeexpand),
('variables', \&varexpand)));
}
sub makefooter {
local $who = shift;
if ($Conf->htmltail && !open(TEMPL, $Conf->htmltail)) {
&warning("Template ".$Conf->htmltail." does not exist.");
$template = "<hr>\n</body>\n";
} else {
$save = $/; undef($/);
$template = <TEMPL>;
$/ = $save;
close(TEMPL);
}
print(&expandtemplate($template,
('banner', \&bannerexpand),
('thisurl', \&thisurl),
('modes', \&modeexpand),
('variables', \&varexpand)),
"</html>\n");
}
1;

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@@ -0,0 +1,246 @@
# $Id: Config.pm,v 1.3 1998/04/30 11:58:17 argggh Exp $
package LXR::Config;
use LXR::Common;
require Exporter;
@ISA = qw(Exporter);
# @EXPORT = '';
$confname = 'lxr.conf';
sub new {
my ($class, @parms) = @_;
my $self = {};
bless($self);
$self->_initialize(@parms);
return($self);
}
sub makevalueset {
my $val = shift;
my @valset;
if ($val =~ /^\s*\(([^\)]*)\)/) {
@valset = split(/\s*,\s*/,$1);
} elsif ($val =~ /^\s*\[\s*(\S*)\s*\]/) {
if (open(VALUESET, "$1")) {
$val = join('',<VALUESET>);
close(VALUESET);
@valset = split("\n",$val);
} else {
@valset = ();
}
} else {
@valset = ();
}
return(@valset);
}
sub parseconf {
my $line = shift;
my @items = ();
my $item;
foreach $item ($line =~ /\s*(\[.*?\]|\(.*?\)|\".*?\"|\S+)\s*(?:$|,)/g) {
if ($item =~ /^\[\s*(.*?)\s*\]/) {
if (open(LISTF, "$1")) {
$item = '('.join(',',<LISTF>).')';
close(LISTF);
} else {
$item = '';
}
}
if ($item =~ s/^\((.*)\)/$1/s) {
$item = join("\0",($item =~ /\s*(\S+)\s*(?:$|,)/gs));
}
$item =~ s/^\"(.*)\"/$1/;
push(@items, $item);
}
return(@items);
}
sub _initialize {
my ($self, $conf) = @_;
my ($dir, $arg);
unless ($conf) {
($conf = $0) =~ s#/[^/]+$#/#;
$conf .= $confname;
}
unless (open(CONFIG, $conf)) {
&fatal("Couldn't open configuration file \"$conf\".");
}
while (<CONFIG>) {
s/\#.*//;
next if /^\s*$/;
if (($dir, $arg) = /^\s*(\S+):\s*(.*)/) {
if ($dir eq 'variable') {
@args = &parseconf($arg);
if (@args[0]) {
$self->{vardescr}->{$args[0]} = $args[1];
push(@{$self->{variables}},$args[0]);
$self->{varrange}->{$args[0]} = [split(/\0/,$args[2])];
$self->{vdefault}->{$args[0]} = $args[3];
$self->{vdefault}->{$args[0]} ||=
$self->{varrange}->{$args[0]}->[0];
$self->{variable}->{$args[0]} =
$self->{vdefault}->{$args[0]};
}
} elsif ($dir eq 'sourceroot' ||
$dir eq 'srcrootname' ||
$dir eq 'baseurl' ||
$dir eq 'incprefix' ||
$dir eq 'dbdir' ||
$dir eq 'glimpsebin' ||
$dir eq 'htmlhead' ||
$dir eq 'htmltail' ||
$dir eq 'htmldir') {
if ($arg =~ /(\S+)/) {
$self->{$dir} = $1;
}
} elsif ($dir eq 'map') {
if ($arg =~ /(\S+)\s+(\S+)/) {
push(@{$self->{maplist}}, [$1,$2]);
}
} else {
&warning("Unknown config directive (\"$dir\")");
}
next;
}
&warning("Noise in config file (\"$_\")");
}
}
sub allvariables {
my $self = shift;
return(@{$self->{variables}});
}
sub variable {
my ($self, $var, $val) = @_;
$self->{variable}->{$var} = $val if defined($val);
return($self->{variable}->{$var});
}
sub vardefault {
my ($self, $var) = @_;
return($self->{vdefault}->{$var});
}
sub vardescription {
my ($self, $var, $val) = @_;
$self->{vardescr}->{$var} = $val if defined($val);
return($self->{vardescr}->{$var});
}
sub varrange {
my ($self, $var) = @_;
return(@{$self->{varrange}->{$var}});
}
sub varexpand {
my ($self, $exp) = @_;
$exp =~ s{\$\{?(\w+)\}?}{
$self->{variable}->{$1} =~ /^([a-zA-Z0-9\.\-]*)$/ ? $1 : ''
}ge;
return($exp);
}
sub baseurl {
my $self = shift;
return($self->varexpand($self->{'baseurl'}));
}
sub sourceroot {
my $self = shift;
return($self->varexpand($self->{'sourceroot'}));
}
sub sourcerootname {
my $self = shift;
return($self->varexpand($self->{'srcrootname'}));
}
sub incprefix {
my $self = shift;
return($self->varexpand($self->{'incprefix'}));
}
sub dbdir {
my $self = shift;
return($self->varexpand($self->{'dbdir'}));
}
sub glimpsebin {
my $self = shift;
return($self->varexpand($self->{'glimpsebin'}));
}
sub htmlhead {
my $self = shift;
return($self->varexpand($self->{'htmlhead'}));
}
sub htmltail {
my $self = shift;
return($self->varexpand($self->{'htmltail'}));
}
sub htmldir {
my $self = shift;
return($self->varexpand($self->{'htmldir'}));
}
sub mappath {
my ($self, $path, @args) = @_;
my (%oldvars) = %{$self->{variable}};
my ($m);
foreach $m (@args) {
$self->{variable}->{$1} = $2 if $m =~ /(.*?)=(.*)/;
}
foreach $m (@{$self->{maplist}}) {
$path =~ s/$m->[0]/$self->varexpand($m->[1])/e;
}
$self->{variable} = {%oldvars};
return($path);
}
#sub mappath {
# my ($self, $path) = @_;
# my ($m);
#
# foreach $m (@{$self->{maplist}}) {
# $path =~ s/$m->[0]/$self->varexpand($m->[1])/e;
# }
# return($path);
#}
1;

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@@ -0,0 +1,121 @@
In order to install LXR, you will need:
- Perl version 5 or later.
- A webserver with cgi-script capabilities.
and optionally, to enable the freetext search queries:
- Glimpse
If you don't have Perl installed, get it from
<URL:http://www.perl.com/perl/info/software.html>.
If you need a webserver, take a look at Apache at
<URL:http://www.apache.org/>
If you want Glimpse and the freetext searching facilites, visit
<URL:http://glimpse.cs.arizona.edu/>.
LXR has so far been tested on the GNU/Linux operating system using the
Apache webserver. Other unix-like operating systems and decently
featured webservers should do as well.
To install LXR itself:
- Set the variables PERLBIN and INSTALLPREFIX in the makefile to
reflect where the Perl 5 binary is located on your system and where
you want the LXR files to be installed.
- Do "make install".
- Edit $(INSTALLPREFIX)/http/lxr.conf to fit your source code
installations and needs.
- Make sure the files in $(INSTALLPREFIX)/http can be reached via
your webserver. Make sure your webserver executes the files
search, source, ident and diff as cgi-scripts. With the Apache
webserver this can be accomplished by making
$(INSTALLPREFIX)/http/.htaccess contain the following lines:
<Files ~ (search|source|ident|diff)$>
SetHandler cgi-script
</Files>
- Generate the identifier database. Go to the directory you
configured as "dbdir" and do "$(INSTALLPREFIX)/bin/genxref foo",
where foo is the subdirectory containing the actual source code.
- (Optional) Generate the Glimpse database. Go to the directory you
configured as "dbdir" and do "glimpseindex -H . foo", where foo is
the same as above. You might want to add other options to the
commandline (e.g. "-n"), see the Glimpse documentation for details.
If it doesn't work:
- Make sure all the permissions are right. Remember that the
webserver needs to be able to access most of them.
- Check that all the Perl scripts find their library files, also when
executed by the webserver.
The lxr.conf file:
LXR does not care much about your directory structure, all relevant
paths can be configured from the lxr.conf file. This file is located
in the same directory as the perl script files. This makes it
possible to have different source trees in different directories on
the web server.
LXR recognizes the following options in the configuration file.
htmlhead
The header of all html files. This is a template that
contains mainly html code but it can also contain some special
directives, these are documented below.
htmltail
Template for bottom of pages.
htmldir
Template for the directory listing.
sourceroot
The root of the source that you want to index.
sourcerootname
The name of the root (more....)
incprefix
Where to find source specific include files.
dbdir
Where to find the database files that lxr needs (fileidx xref and
the glimpse files).
glimpsebin
Location of the glimpse binary on your system.
variable
This defines a variable that can be used in templates and
the config file. The syntax is
variable: <name>, <text>, <values>, <default>
<name> is the name of the variable, <text> is a textual description,
<values> are the possible values of the variable.
<default> is the default value of the variable.
The <values> field can either be a list starting with a "(" and
ending with a ")", with elements separated with ",", or it can be
[ <filename> ]. In this case the values are read from a file with
one value on each line.
map - This makes it possible to rewrite directories using variables.
The linux sourcecode for instance contains several different
architectures, the include files for each of these are found in the
directory /include/asm-<architecture>/. To remap each of these
according to a variable $a you can specify
map: /include/asm[^\/]*/ /include/asm-$a/
Find creative uses for this option :-)

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@@ -0,0 +1,33 @@
# Makefile for installation and configuration of LXR
# The location of your perl5 binary
PERLBIN=/usr/bin/perl
# LXR will be installed here
INSTALLPREFIX=/tmp/lxr
# End of configuration parameters
CGISCRIPTS=find ident search diff source
PERLMODULES=SimpleParse.pm Common.pm Config.pm
config: $(CGISCRIPTS) $(PERLMODULES) genxref
$(CGISCRIPTS) genxref: %: %.in
sed s%@perlbin@%$(PERLBIN)% < $< > $@
install: config genxref
install --directory $(INSTALLPREFIX)/http
install --directory $(INSTALLPREFIX)/http/lib
install --directory $(INSTALLPREFIX)/http/lib/LXR
install --directory $(INSTALLPREFIX)/bin
install --directory $(INSTALLPREFIX)/source
install --mode 755 $(CGISCRIPTS) $(INSTALLPREFIX)/http/
install --mode 750 genxref $(INSTALLPREFIX)/bin/
install --mode 755 Common.pm Config.pm $(INSTALLPREFIX)/http/lib/LXR
install --mode 755 SimpleParse.pm $(INSTALLPREFIX)/http/lib/
install --mode 644 http/* $(INSTALLPREFIX)/http/
clean:
rm -f $(CGISCRIPTS) genxref

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@@ -0,0 +1,12 @@
This is version 0.2 of the LXR cross-referencing engine. This is primarily
a security update to version 0.1.
The LXR engine is free software. See the file COPYING for copying
permission.
See the file INSTALL for installation instructions.
To visit the original LXR site, point your browser towards
<URL:http://lxr.linux.no/>.
To contact the authors, send mail to <lxr@linux.no>.

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@@ -0,0 +1,107 @@
# $Id: SimpleParse.pm,v 1.2 1998/04/30 11:58:17 argggh Exp $
use strict;
package SimpleParse;
require Exporter;
use vars qw(@ISA @EXPORT);
@ISA = qw(Exporter);
@EXPORT = qw(&doparse &untabify &init &nextfrag);
my $INFILE; # Input file handle
my @frags; # Fragments in queue
my @bodyid; # Array of body type ids
my @open; # Fragment opening delimiters
my @term; # Fragment closing delimiters
my $split; # Fragmentation regexp
my $open; # Fragment opening regexp
my $tabwidth; # Tab width
sub init {
my @blksep;
($INFILE, @blksep) = @_;
while (@_ = splice(@blksep,0,3)) {
push(@bodyid, $_[0]);
push(@open, $_[1]);
push(@term, $_[2]);
}
foreach (@open) {
$open .= "($_)|";
$split .= "$_|";
}
chop($open);
foreach (@term) {
next if $_ eq '';
$split .= "$_|";
}
chop($split);
$tabwidth = 8;
}
sub untabify {
my $t = $_[1] || 8;
$_[0] =~ s/([^\t]*)\t/$1.(' ' x ($t - (length($1) % $t)))/ge;
return($_[0]);
}
sub nextfrag {
my $btype = undef;
my $frag = undef;
while (1) {
if ($#frags < 0) {
my $line = <$INFILE>;
if ($. == 1 &&
$line =~ /^.*-[*]-.*?[ \t;]tab-width:[ \t]*([0-9]+).*-[*]-/) {
$tabwidth = $1;
}
&untabify($line, $tabwidth);
# $line =~ s/([^\t]*)\t/
# $1.(' ' x ($tabwidth - (length($1) % $tabwidth)))/ge;
@frags = split(/($split)/o, $line);
}
last if $#frags < 0;
unless ($frags[0]) {
shift(@frags);
} elsif (defined($frag)) {
if (defined($btype)) {
my $next = shift(@frags);
$frag .= $next;
last if $next =~ /^$term[$btype]$/;
} else {
last if $frags[0] =~ /^$open$/o;
$frag .= shift(@frags);
}
} else {
$frag = shift(@frags);
if (defined($frag) && (@_ = $frag =~ /^$open$/o)) {
my $i = 1;
$btype = grep { $i = ($i && !defined($_)) } @_;
}
}
}
$btype = $bodyid[$btype] if $btype;
return($btype, $frag);
}
1;

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@@ -0,0 +1,206 @@
#!@perlbin@
# $Id: diff,v 1.2 1998/04/30 11:58:15 argggh Exp $
# diff -- Display diff output with markup.
#
# Arne Georg Gleditsch <argggh@ifi.uio.no>
# Per Kristian Gjermshus <pergj@ifi.uio.no>
#
#
# 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 of the License, 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; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
######################################################################
use lib 'lib/';
use SimpleParse;
use LXR::Common;
use LXR::Config;
use DB_File;
sub htmlsub {
my ($s, $l) = @_;
my @s = split(/(<[^>]*>|&[\#\w\d]+;?)/, $s);
$s = '';
while (@s) {
my $f = substr(shift(@s), 0, $l);
$l -= length($f);
$s .= $f;
$f = shift(@s);
if ($f =~ /^&/) {
if ($l > 0) {
$s .= $f;
$l--;
}
} else {
$s .= $f;
}
}
$s .= ' ' x $l;
return $s;
}
sub printdiff {
unless ($diffvar) {
foreach ($Conf->allvariables) {
push(@vars, $Conf->vardescription($_));
}
$vars[$#vars-1] .= " or ".pop(@vars) if $#vars > 0;
print("<p align=center>\n",
"Please indicate the version of the file you wish to\n",
"compare to by clicking on the appropriate\n",
join(", ",@vars)," button.\n",
"</p>\n");
return;
}
unless ($Path->{'file'}) {
print("<h3 align=center>Diff not yet supported for directories.</h3>\n");
return;
}
$origvirt = $Path->{'virt'}.$Path->{'file'};
$origreal = $Path->{'real'}.$Path->{'file'};
$origval = $Conf->variable($diffvar);
$Conf->variable($diffvar,$diffval);
$diffvirt = $Conf->mappath($Path->{'virt'}).$Path->{'file'};
$diffreal = $Conf->sourceroot.$diffvirt;
$Conf->variable($diffvar,$origval);
# print("<h3>Diff of $origvirt -> $diffvirt</h3>\n");
# print("<h3>($origreal -> $diffreal)</h3>\n");
# FIXME: Check existence of $origreal & $diffreal.
&fflush;
unless (open(DIFF, "-|")){
open(STDERR, ">&STDOUT");
exec('diff', '-U0', $origreal, $diffreal);
print "*** Diff subprocess died unexpextedly: $!\n";
exit;
}
while (<DIFF>) {
if (($os, $ol, $ns, $nl) =
/@@ -(\d+)(?:,(\d+)|) \+(\d+)(?:,(\d+)|) @@/) {
$os++ if $ol eq '0';
$ns++ if $nl eq '0';
$ol = 1 unless defined($ol);
$nl = 1 unless defined($nl);
$bo = $os + $ofs;
if ($ol < $nl) {
$ofs += $nl - $ol;
$dir = '&gt;&gt;';
$ms = $nl - $ol;
$ml = $ol;
$orig{$os+$ol} = $ms;
} else {
$dir = '&lt;&lt;';
$ms = $ol - $nl;
$ml = $nl;
$new{$ns+$nl} = $ms;
}
foreach (0..$ml - 1) {
$chg{$bo + $_} = '!!';
}
foreach (0..$ms - 1) {
$chg{$bo + $ml + $_} = $dir;
}
}
}
close(<DIFF>);
print("<h1>Diff markup</h1>\n",
"<h3>Differences between ",
&fileref("$origvirt <i>(".$Conf->vardescription($diffvar).
" $origval)</i>", $origvirt, undef, "$diffvar=$origval"),
" and ",
&fileref("$diffvirt <i>(".$Conf->vardescription($diffvar).
" $diffval)</i>",$diffvirt, undef, "$diffvar=$diffval"),
"</h3><hr>\n");
# "<table width=\"100%\" border=0 cellpadding=0><tr><td>",
#
# &fileref("<b>$origvirt <i>(".$Conf->vardescription($diffvar).
# " $origval)</i></b>", $origvirt, undef, "$diffvar=$origval"),
# "<hr></td>\n<td></td>\n<td>",
#
# &fileref("<b>$diffvirt <i>(".$Conf->vardescription($diffvar).
# " $diffval)</i></b>",$diffvirt, undef, "$diffvar=$diffval"),
# "<hr></td>\n</tr></table>\n");
open(FOO, $origreal);
$orig = '';
&markupfile(\*FOO, $Path->{'virt'}, $Path->{'file'},
sub { $orig .= shift });
$len = $.+$ofs;
close(FOO);
$Conf->variable($diffvar, $diffval);
open(FOO, $diffreal);
$new = '';
&markupfile(\*FOO, $Conf->mappath($Path->{'virt'}), $Path->{'file'},
sub { $new .= shift });
close(FOO);
$Conf->variable($diffvar, $origval);
$i = 1; $orig =~ s/^/"\n" x ($orig{$i++})/mge;
$i = 1; $new =~ s/^/"\n" x ($new{$i++})/mge;
@orig = split(/\n/, $orig);
@new = split(/\n/, $new);
print("<pre>");
foreach $i (0..$len) {
$o = &htmlsub($orig[$i], 50);
# $n = &htmlsub($new[$i], 999);
$n = $new[$i];
# print("<tr><td><code>$o</code></td>".
# "<td><font color=red> ", $chg{$i+1}, " </font></td>".
# "<td><code>$n</code></td></tr>\n");
print("$o <font color=red>", ($chg{$i+1} || " "), "</font> $n\n");
}
print("</pre>");
# print("</td></tr></table>");
}
($Conf, $HTTP, $Path) = &init;
$diffvar = $HTTP->{'param'}->{'diffvar'};
$diffval = $HTTP->{'param'}->{'diffval'};
&makeheader('diff');
&printdiff;
&makefooter('diff');

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@@ -0,0 +1,71 @@
#!@perlbin@
# $Id: find,v 1.3 1998/04/30 11:58:16 argggh Exp $
# find -- Find files
#
# Arne Georg Gleditsch <argggh@ifi.uio.no>
# Per Kristian Gjermshus <pergj@ifi.uio.no>
#
#
# 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 of the License, 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; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
######################################################################
use lib 'lib/';
use LXR::Common;
use LXR::Config;
sub find {
print("<p align=center>\n",
"Search for files using regular expressions\n",
"<form method=get action=\"find\">\n");
foreach ($Conf->allvariables) {
if ($Conf->variable($_) ne $Conf->vardefault($_)) {
print("<input type=hidden name=\"",$_, "\" ",
"value=\"", $Conf->variable($_), "\">\n");
}
}
print("Find file: <input type=text name=\"string\" ",
"value=\"",$searchtext,"\" size =60>\n",
"<input type=submit value=\"search\">\n",
"</form>\n");
if ($searchtext ne "") {
unless (open(FILELLISTING,$Conf->dbdir."/.glimpse_filenames")) {
&warning("Could not open .glimpse_filenames.");
return;
}
print("<hr>\n");
$sourceroot = $Conf->sourceroot;
while($file = <FILELLISTING>) {
$file =~ s/^$sourceroot//;
if($file =~ /$searchtext/) {
print(&fileref("$file", "/$file"),"<br>\n");
}
}
}
}
($Conf, $HTTP, $Path) = &init;
$searchtext = $HTTP->{'param'}->{'string'};
&makeheader('find');
&find;
&makefooter('find');

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@@ -0,0 +1,338 @@
#!@perlbin@
# $Id: genxref,v 1.5 1998/04/22 12:16:12 pergj Exp $
# genxref.pl -- Finds identifiers in a set of C files using an
# extremely fuzzy algorithm. It sort of works.
#
# Arne Georg Gleditsch <argggh@ifi.uio.no>
# Per Kristian Gjermshus <pergj@ifi.uio.no>
#
#
# 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 of the License, 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; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
# TODO: ns/cmd/xfe/src/MozillaApp.h, XFE_MozillaApp
######################################################################
use lib 'lib/';
use integer;
use DB_File;
%itype = (('macro', 'M'),
('typedef', 'T'),
('struct', 'S'),
('enum', 'E'),
('union', 'U'),
('function', 'F'),
('funcprot', 'f'),
('class', 'C'), # (C++)
('classforw', 'c'), # (C++)
('var', 'V'));
# ('reference', 'R')
@reserved = ('auto', 'break', 'case', 'char', 'const', 'continue',
'default', 'do', 'double', 'else', 'enum', 'extern',
'float', 'for', 'goto', 'if', 'int', 'long', 'register',
'return', 'short', 'signed', 'sizeof', 'static',
'struct', 'switch', 'typedef', 'union', 'unsigned',
'void', 'volatile', 'while', 'fortran', 'asm',
'inline', 'operator',
'class', # (C++)
# Her b<>r vi ha flere av disse:
'__asm__','__inline__');
$ident = '\~?_*[a-zA-Z][a-zA-Z0-9_]*';
$realpath = $ARGV[0];
$realpath ||= '.';
$realpath .= '/';
sub wash {
my $towash = $_[0];
$towash =~ s/[^\n]+//gs;
return($towash);
}
sub stripodd {
my $tostrip = $_[0];
while ($tostrip =~ s/\{([^\{\}]*)\}/
"\05".&wash($1)/ges) {}
$tostrip =~ s/\05/\{\}/gs;
$tostrip =~ s/[\{\}]//gs;
return($tostrip);
}
sub classes {
my @c = (shift =~ /($ident)\s*(?:$|,)/gm);
if (@c) {
return(join(":", @c)."::");
} else {
return('');
}
}
sub findident {
print(STDERR "Starting pass 1: Collect identifier definitions.\n");
$start = time;
$fnum = 0; $defs = 0;
foreach $f (@f) {
$f =~ s/^$realpath//o;
$fileidx{++$fnum} = $f;
open(SRCFILE, $realpath.$f);
$_ = $/; undef($/); $contents = <SRCFILE>; $/ = $_;
close(SRCFILE);
print(STDERR
"(Pass 1) $f (",length($contents),
"), file $fnum of ",$#f+1,"...\n");
# Remove comments.
$contents =~ s/\/\*(.*?)\*\//&wash($1)/ges;
$contents =~ s/\/\/[^\n]*//g; # C++
# Unwrap continunation lines.
$contents =~ s/\\\s*\n/$1\05/gs;
while ($contents =~ s/\05([^\n\05]+)\05/$1\05\05/gs) {}
$contents =~ s/(\05+)([^\n]*)/"$2"."\n" x length($1)/gse;
# Find macro (un)definitions.
$l = 0;
foreach ($contents =~ /^(.*)/gm) {
$l++;
if (/^[ \t]*\#\s*(define|undef)\s+($ident)/o) {
$xref{$2} .= "$itype{'macro'}$fnum:$l\t";
$defs++;
}
}
# We want to do some funky heuristics with preprocessor blocks
# later, so mark them. (FIXME: #elif)
$contents =~ s/^[ \t]*\#\s*if.*/\01/gm;
$contents =~ s/^[ \t]*\#\s*else.*/\02/gm;
$contents =~ s/^[ \t]*\#\s*endif.*/\03/gm;
# Strip all preprocessor directives.
$contents =~ s/^[ \t]*\#(.*)//gm;
# Now, remove all odd block markers ({,}) we find inside
# #else..#endif blocks. (And pray they matched one in the
# preceding #if..#else block.)
while ($contents =~ s/\02([^\01\02\03]*\03)/&stripodd($1)/ges ||
$contents =~ s/\01([^\01\02\03]*)\03/$1/gs) {}
while ($contents =~ /([\01\02\03\04\05])/gs) {
print(STDERR "\t ** stray ".($1 eq "\01"
? "#if"
: ($1 eq "\02"
? "#else"
: ($1 eq "\03"
? "#endif"
: "control sequence"
)
)
)." found.\n");
}
$contents =~ s/[\01\02\03\04\05]//gs;
# Remove all but outermost blocks. (No local variables.)
while ($contents =~ s/\{([^\{\}]*)\}/
"\05".&wash($1)/ges) {}
$contents =~ s/\05/\{\}/gs;
# Remove nested parentheses.
while ($contents =~ s/\(([^\)]*)\(/\($1\05/g ||
$contents =~ s/\05([^\(\)]*)\)/ $1 /g) {}
# Some heuristics here: Try to recognize "code" and delete
# everything up to the next block delimiter.
# $contents =~ s/([\;\}\{])(\s*$ident\s*\([^\)]*\)[^\{\}]*)/
# "$1".&wash($2)/goes;
# $contents =~ s/([\;\{])(\s*\**$ident\s*\=[^\{\}]*)/
# "$1".&wash($2)/goes;
# Parentheses containing commas are probably not interesting.
$contents =~ s/\(([^\)]*\,[^\)]*)\)/
"()".&wash($1)/ges;
# This operator-stuff messes things up. (C++)
$contents =~ s/operator[\<\>\=\!\+\-\*\%\/]{1,2}/operator/g;
# Ranges are uninteresting (and confusing).
$contents =~ s/\[.*?\]//gs;
# And so are assignments.
$contents =~ s/\=(.*?);/";".&wash($1)/ges;
# From here on, \01 and \02 are used to encapsulate found
# identifiers,
# Find struct, enum and union definitions.
$contents =~ s/((struct|enum|union)\s+($ident|)\s*({}|(;)))/
"$2 ".($3 ? "\01".$itype{$2}.$3."\02 " : "").$5.&wash($1)/goes;
# Find class definitions. (C++)
$contents =~ s/((class)\s+($ident)\s*(:[^;\{]*|)({}|(;)))/
"$2 "."\01".$itype{$2.($6 ? 'forw' : '')}.
&classes($4).$3."\02 ".$6.&wash($1)/goes;
@contents = split(/[;\}]/, $contents);
$contents = '';
foreach (@contents) {
s/^(\s*)(struct|enum|union|inline)/$1/;
if (/$ident[^a-zA-Z0-9_]+$ident/) { # It takes two, baby.
$t = /^\s*typedef/s; # Is this a type definition?
s/($ident(?:\s*::\s*$ident|)) # ($1) Match the identifier
([\s\)]* # ($2) Tokens allowed after identifier
(\([^\)]*\) # ($3) Function parameters?
(?:\s*:[^\{]*|) # inheritage specification (C++)
|) # No function parameters
\s*($|,|\{))/ # ($4) Allowed termination chars.
"\01". # identifier marker
($t # if type definition...
? $itype{'typedef'} # ..mark as such
: ($3 # $3 is empty unless function definition.
? ($4 eq '{' # Terminating token indicates
? $itype{'function'} # function or
: $itype{'funcprot'}) # function prototype.
: $itype{'var'}) # Variable.
)."$1\02 ".&wash($2)/goesx;
}
$contents .= $_;
}
$l = 0;
foreach ($contents =~ /^(.*)/gm) {
$l++;
while (/\01(.)(?:(.+?)\s*::\s*|)($ident)\02/go) {
$xref{$3} .= "$1$fnum:$l".($2 ? ":$2" : "")."\t";
$defs++;
}
}
}
# S<> juksar me litt.
foreach (@reserved) {
delete($xref{$_});
}
print(STDERR
"Completed pass 1 (",(time-$start),"s):",
" $defs definitions found.\n\n");
}
sub findusage {
print(STDERR "Starting pass 2: Generate reference statistics.\n");
$start = time;
$fnum = 0; $refs = 0;
foreach $f (@f) {
$f =~ s/^$realpath//o;
$fnum++;
$lcount = 0;
%tref = ();
open(SRCFILE, $realpath.$f);
$_ = $/; undef($/); $contents = <SRCFILE>; $/ = $_;
close(SRCFILE);
print(STDERR
"(Pass 2) $f (",length($contents),
"), file $fnum of ",$#f+1,"...\n");
# Remove comments
$contents =~ s/\/\*(.*?)\*\//&wash($1)/ges;
$contents =~ s/\/\/[^\n]*//g;
# Remove include statements
$contents =~ s/^[ \t]*\#include[ \t]+[^\n]*//gm;
# FIXME: "var"
@lines = split(/\n/, $contents);
foreach $line (@lines) {
$lcount++;
foreach ($line =~ /(?:^|[^a-zA-Z_\#])($ident)\b/og) {
$tref{$_} .= "$lcount," if $xref{$_};
}
}
while (($a, $b) = each(%tref)) {
chop($b);
$xref{$a} .= "R$fnum:$b\t";
$refs++;
}
}
print(STDERR
"Completed pass 2 (",(time-$start),"s):",
"$refs references to known identifiers found.\n\n");
}
sub dumpdb {
print(STDERR "Starting pass 3: Dump database to disk.\n");
$start = time;
tie (%xrefdb, "DB_File" , "xref", O_RDWR|O_CREAT, 0664, $DB_HASH)
|| die("Could not open \"xref\" for writing");
$i = 0;
while (($k, $v) = each(%xref)) {
$i++;
delete($xref{$k});
$xrefdb{$k} = $v;
unless ($i % 100) {
print(STDERR "(Pass 3) identifier $i of maximum $defs...\n");
}
}
untie(%xrefdb);
print(STDERR
"Completed pass 3 (",(time-$start),"s):",
"Information on $i identifiers dumped to disk.\n\n");
}
tie (%fileidx, "DB_File", "fileidx", O_RDWR|O_CREAT, 0660, $DB_HASH)
|| die("Could not open \"fileidx\" for writing");
open(FILES, "find $realpath -print |");
while (<FILES>) {
chop;
push(@f, $_) if /\.([ch]|cpp?|cc)$/i; # Duplicated in lib/LXR/Common.pm
}
close(FILES);
&findident;
&findusage;
&dumpdb;
dbmclose(%fileidx);

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>Linux Cross-Reference</TITLE>
</HEAD>
<BODY BGCOLOR=WHITE>
<H1 ALIGN=CENTER>
Cross-Referencing Linux<BR>
<A HREF="http:source/">
<I>Browse the code</I></A></H1>
<HR><H2>Motivation</H2>
The Linux Cross-Reference project is the testbed application of a
general hypertext cross-referencing tool. (Or the other way around.)
<P>
The main goal of the project is to create a versatile
cross-referencing tool for relatively large code repositories. The
project is based on stock web technology, so the codeview client may
be chosen from the full range of available web browsers. On the
server side, any Unix-based web server with cgi-script capability
should do nicely.
<P>
The main feature of the indexer is of course the ability to jump
easily to the declaration of any global identifier. Indeed, even all
<I>references</I> to global identifiers are indexed. Quick access to
function declarations, data (type) definitions and preprocessor macros
makes code browsing just that tad more convenient. At-a-glance
overview of e.g. which code areas that will be affected by changing a
function or type definition should also come in useful during
development and debugging.
<P>
Other bits of hypertextual sugar, such as e-mail and include file
links, are provided as well, but is on the whole, well, sugar. Some
minimal visual markup is also done. (Style sheets are considered as a
way to do this in the future.)
<HR><H2>Technicalities</H2>
The index generator is written in <A HREF="http://www.perl.org">Perl</A>
and relies heavily on Perl's regular expression facilities. The
algorithm used is very brute force and extremely sloppy. The
rationale behind the sloppiness is that too little information renders
the database useless, while too much information simply means the
users have to think and navigate at the same time.
<P>
The Linux source code, with which the project has initially been
linked, presents the indexer with some very tough obstacles.
Specifically, the heavy use of preprocessor macros makes the parsing a
virtual nightmare. We want to index the information in the
preprocessor directives as well as the actual C code, so we have to
parse both at once, which leads to no end of trouble. (Strict parsing
is right out.) Still, we're pretty satisfied with what the indexer
manages to get out of it.
<P>
There's also the question of actually broken code. We want to
reasonably index all code portions, even if some of it is not entirely
syntactically valid. This is another reason for the sloppiness.
<P>
There are obviously disadvantages to this approach. No scope checking
is done, and the most annoying effect of this is mistaking local
identifers for references to global ones with the same name. This
particular problem (and others) can only be solved by doing (almost)
full parsing. The feasibility of combining this with the fuzzy way
indexing is currently done is being looked into.
<P>
An identifier is a macro, typedef, struct, enum, union, function,
function prototype or variable. For the Linux source code between
50000 and 60000 identifiers are collected. The individual files of the
sourcecode are formatted on the fly and presented with clickable
identifiers.
<P>
It is possible to search among the identifiers and the entire
kernel source text. The freetext search is implemented using <A
HREF="http://glimpse.cs.arizona.edu">Glimpse</A>, so all the
capabilities of Glimpse are available. Especially the regular expression
search capabilities are useful.
<HR><H2>Availability</H2>
The code for the indexer is released under the
<A HREF="http://www.gnu.org">GNU</A>
<A HREF="http://www.gnu.org/copyleft/copyleft.html">Copyleft</A>
license. Go to <A HREF="http://lxr.linux.no">LXR main site</A> to
get the latest version.
<HR><H2>Contacting the authors</H2>
We would very much like to receive feedback on this project. If you
find it useful or have suggestions on how to make improvements, feel
free to send us e-mail. We hope that this will be a useful tool, both
for experienced developers and beginners wanting to explore the Linux
sourcecode.
<HR>
<ADDRESS>
<A HREF="mailto:lxr@linux.no">
Arne Georg Gleditsch and Per Kristian Gjermshus</A>
</ADDRESS>
</BODY>
</HTML>

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@@ -0,0 +1,37 @@
# Configuration file.
# Define typed variable "v", read valueset from file.
variable: v, Version, [/local/lxr/source/versions], [/local/lxr/source/defversion]
# Define typed variable "a". First value is default.
variable: a, Architecture, (i386, alpha, m68k, mips, ppc, sparc, sparc64)
# Define the base url for the LXR files.
baseurl: http://lxr/
# These are the templates for the HTML heading, directory listing and
# footer, respectively.
htmlhead: /local/lxr/http/template-head
htmltail: /local/lxr/http/template-tail
htmldir: /local/lxr/http/template-dir
# The source is here.
sourceroot: /local/lxr/source/$v/linux/
srcrootname: Linux
# "#include <foo.h>" is mapped to this directory (in the LXR source
# tree)
incprefix: /include
# The database files go here.
dbdir: /local/lxr/source/$v/
# Glimpse can be found here.
glimpsebin: /local/bin/glimpse
# The power of regexps. This is pretty Linux-specific, but quite
# useful. Tinker with it and see what it does. (How's that for
# documentation?)
map: /include/asm[^\/]*/ /include/asm-$a/
map: /arch/[^\/]+/ /arch/$a/

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@@ -0,0 +1,139 @@
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>Linux Cross-Reference</TITLE>
</HEAD>
<BODY BGCOLOR=WHITE>
<H1 ALIGN=CENTER>
Help doing searches<BR>
<A HREF="http:/source/">
<I>Browse the code</I></A></H1>
<I> This text is directly stolen from the Glimpse manual page. I have
tried to remove things that do not apply to the lxr searcher, but
beware, some things might have slipped through. I'll try to put
together something better when I get the time. For more information on
glimpse go to the <A HREF="http://glimpse.cs.arizona.edu">Glimpse
homepage</A>.</I>
<A NAME="Patterns"></A><H2>Patterns</H2>
<P>
glimpse supports a large variety of patterns, including simple
strings, strings with classes of characters, sets of strings,
wild cards, and regular expressions (see <A HREF="#Limitations">Limitations</A>).
<P> <H3>Strings</H3>
Strings are any sequence of characters, including the special symbols
`^' for beginning of line and `$' for end of line. The following
special characters (`$', `^', `*', `[', `^', `|', `(', `)', `!', and
`\' ) as well as the following meta characters special to glimpse (and
agrep): `;', `,', `#', `&gt;', `&lt;', `-', and `.', should be preceded by
`\\' if they are to be matched as regular characters. For example,
\\^abc\\\\ corresponds to the string ^abc\\, whereas ^abc corresponds
to the string abc at the beginning of a line.
<P> <H3>Classes of characters</H3>
a list of characters inside [] (in order) corresponds to any character
from the list. For example, [a-ho-z] is any character between a and h
or between o and z. The symbol `^' inside [] complements the list.
For example, [^i-n] denote any character in the character set except
character 'i' to 'n'.
The symbol `^' thus has two meanings, but this is consistent with
egrep.
The symbol `.' (don't care) stands for any symbol (except for the
newline symbol).
<P> <H3>Boolean operations</H3>
Glimpse
supports an `AND' operation denoted by the symbol `;'
an `OR' operation denoted by the symbol `,',
a limited version of a 'NOT' operation (starting at version 4.0B1)
denoted by the symbol `~',
or any combination.
For example, pizza;cheeseburger' will output all lines containing
both patterns.
'{political,computer};science' will match 'political science'
or 'science of computers'.
<P><H3>Wild cards</H3>
The symbol '#' is used to denote a sequence
of any number (including 0)
of arbitrary characters (see <A HREF="#Limitations">Limitations</A>).
The symbol # is equivalent to .* in egrep.
In fact, .* will work too, because it is a valid regular expression
(see below), but unless this is part of an actual regular expression,
# will work faster.
(Currently glimpse is experiencing some problems with #.)
<P><H3>Combination of exact and approximate matching</H3>
Any pattern inside angle brackets &lt;&gt; must match the text exactly even
if the match is with errors. For example, &lt;mathemat&gt;ics matches
mathematical with one error (replacing the last s with an a), but
mathe&lt;matics&gt; does not match mathematical no matter how many errors are
allowed. (This option is buggy at the moment.)
<H3>Regular expressions</H3>
Since the index is word based, a regular expression must match words
that appear in the index for glimpse to find it. Glimpse first strips
the regular expression from all non-alphabetic characters, and
searches the index for all remaining words. It then applies the
regular expression matching algorithm to the files found in the index.
For example, glimpse 'abc.*xyz' will search the index for all files
that contain both 'abc' and 'xyz', and then search directly for
'abc.*xyz' in those files. (If you use glimpse -w 'abc.*xyz', then
'abcxyz' will not be found, because glimpse will think that abc and
xyz need to be matches to whole words.) The syntax of regular
expressions in glimpse is in general the same as that for agrep. The
union operation `|', Kleene closure `*', and parentheses () are all
supported. Currently '+' is not supported. Regular expressions are
currently limited to approximately 30 characters (generally excluding
meta characters). The maximal number of errors
for regular expressions that use '*' or '|' is 4.
<P>
<A NAME="Limitations"></A><H2>Limitations</H2>
The index of glimpse is word based. A pattern that contains more than
one word cannot be found in the index. The way glimpse overcomes this
weakness is by splitting any multi-word pattern into its set of words
and looking for all of them in the index.
For example, <I>'linear programming'</I> will first consult the index
to find all files containing both <I>linear</I> and <I>programming</I>,
and then apply agrep to find the combined pattern.
This is usually an effective solution, but it can be slow for
cases where both words are very common, but their combination is not.
<P>
As was mentioned in the section on <A HREF="#Patterns">Patterns</A> above, some characters
serve as meta characters for glimpse and need to be
preceded by '\\' to search for them. The most common
examples are the characters '.' (which stands for a wild card),
and '*' (the Kleene closure).
So, "glimpse ab.de" will match abcde, but "glimpse ab\\.de"
will not, and "glimpse ab*de" will not match ab*de, but
"glimpse ab\\*de" will.
The meta character - is translated automatically to a hypen
unless it appears between [] (in which case it denotes a range of
characters).
<P>
There is no size limit for simple patterns and simple patterns
within Boolean expressions.
More complicated patterns, such as regular expressions,
are currently limited to approximately 30 characters.
Lines are limited to 1024 characters.
<P>
<HR>
<ADDRESS>
<A HREF="mailto:lxr@linux.no">
Arne Georg Gleditsch and Per Kristian Gjermshus</A>
</ADDRESS>
</BODY>
</HTML>

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@@ -0,0 +1,15 @@
<table border=0 cellspacing=4>
<tr valign=middle>
<td>
<td nowrap><b>Name</b>
<td nowrap><b>Size</b>
<td nowrap><b>Last modified (GMT)</b>
<td nowrap><b>Description</b>
$files{
<tr valign=middle>
<td nowrap>$iconlink
<td nowrap>$namelink
<td nowrap align=right>$filesize{$bytes bytes}
<td nowrap>$modtime
<td>$description{<i>$desctext</i>}}
</table>

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@@ -0,0 +1,27 @@
<!doctype html public "-//W3C//DTD HTML 3.2//EN">
<html>
<head>
<title>$title</title>
<base href="$baseurl">
</head>
<body bgcolor=white>
<div align=center>
$modes{ ~ <b>[</b>&nbsp;$modelink&nbsp;<b>]</b>} ~
</div>
<h1 align=center>
<a href="http://www.linux.org/">
Linux</a>
<a href="http:blurb.html">
Cross Reference</a><br>
$banner
</h1>
<div align=center>
$variables{
<b>$varname:</b>
$varlinks{ ~ <b>[</b>&nbsp;$varvalue&nbsp;<b>]</b>} ~
<br>}
</div>
<hr>

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@@ -0,0 +1,11 @@
<hr>
<div align=center>
$modes{ ~ <b>[</b>&nbsp;$modelink&nbsp;<b>]</b>} ~
</div>
<hr>
This page was automatically generated by the
<a href="http:blurb.html">LXR engine</a>.
<br>
Visit the <a href="http://lxr.linux.no/">LXR main site</a> for more
information.

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#!@perlbin@
# $Id: ident,v 1.6 1998/04/30 11:58:16 argggh Exp $
# ident -- Look up identifiers
#
# Arne Georg Gleditsch <argggh@ifi.uio.no>
# Per Kristian Gjermshus <pergj@ifi.uio.no>
#
#
# 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 of the License, 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; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
######################################################################
use lib 'lib/';
use LXR::Common;
use LXR::Config;
use DB_File;
%ty = (('M', 'preprocessor macro'),
('V', 'variable'),
('f', 'function prototype'),
('F', 'function'),
('C', 'class'), # C++
('c', '(forwarded) class'), # C++
('T', 'type'),
('S', 'struct type'),
('E', 'enum type'),
('U', 'union type'));
sub ident {
print("<form method=get action=\"ident\">\n");
foreach ($Conf->allvariables) {
if ($Conf->variable($_) ne $Conf->vardefault($_)) {
print("<input type=hidden name=\"",$_, "\" ",
"value=\"", $Conf->variable($_), "\">\n");
}
}
print("Identifier: <input type=text name=\"i\" ",
"value=\"",$identifier,"\" size=60>\n",
"<input type=submit value=\"Go get it\">\n",
"</form>\n");
if ($identifier) {
tie(%xref, "DB_File", $Conf->dbdir."/xref",
O_RDONLY, undef, $DB_HASH) ||
&fatal("Could not open \"".$Conf->dbdir."/xref\"");
@refs = split(/\t/,$xref{$identifier});
print("<h1>$identifier</h1>\n");
if (@refs) {
tie(%fileidx, "DB_File", $Conf->dbdir."/fileidx",
O_RDONLY, undef, $DB_HASH) ||
&fatal("Could not open \"".$Conf->dbdir."/fileidx\"");
foreach (@refs) {
$f{$1} .= "$2\t" if /^(.)(.*)/;
}
foreach $t (keys(%ty)) {
if ($f{$t}) {
print("Defined as a $ty{$t} in:<ul>\n");
@_ = split(/\t/, $f{$t});
unshift(@_);
foreach (@_) {
($fnum, $line, @clss) = split(/:/, $_);
print("<li>",
&fileref("$fileidx{$fnum}, line $line",
"/$fileidx{$fnum}", $line));
if (@clss) {
if ($t eq 'F' || $t eq 'f') {
print(", as member of ");
if ($xref{$clss[0]}) {
print(&idref("class $clss[0]", $clss[0]));
} else {
print("class $clss[0]");
}
} elsif ($t eq 'C') {
print(", inheriting <ul>\n");
foreach (@clss) {
print("<li>");
if ($xref{$_}) {
print(&idref("class $_", $clss[0]));
} else {
print("class $_");
}
}
print("</ul>");
}
}
print("\n");
}
print("</ul>\n");
}
}
print("Referenced (in ",int(grep(/^R/, @refs))," files total) in:\n",
"<ul>\n");
$concise = $#refs > 100;
foreach (@refs) {
if (/^R(.+):([\d,]+)/) {
$fnam = $fileidx{$1};
@fpos = split(/,/, $2);
if ($#fpos > 0) {
if ($concise) {
print("<li>", &fileref("$fnam", "/$fnam"),
", ",$#fpos+1," times\n");
} else {
print("<li>$fnam:\n<ul>\n");
foreach (@fpos) {
print("<li>", &fileref("line $_",
"/$fnam", $_),
"\n");
}
print("</ul>\n");
}
} else {
print("<li>", &fileref("$fnam, line $fpos[0]",
"/$fnam", $fpos[0]),
"\n");
}
}
}
print("</ul>\n");
untie(%fileidx);
} else {
print("<br><b>Not used</b>");
}
untie(%xref);
}
}
($Conf, $HTTP, $Path) = &init;
$identifier = $HTTP->{'param'}->{'i'};
&makeheader('ident');
&ident;
&makefooter('ident');

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@@ -0,0 +1,127 @@
#!@perlbin@
# $Id: search,v 1.3 1998/04/30 11:58:16 argggh Exp $
# search -- Freetext search
#
# Arne Georg Gleditsch <argggh@ifi.uio.no>
# Per Kristian Gjermshus <pergj@ifi.uio.no>
#
#
# 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 of the License, 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; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
######################################################################
use lib 'lib/';
use LXR::Common;
use LXR::Config;
$maxhits = 1000;
sub search {
print("<p align=center>\n",
"This searchpage is powered by ",
"<a href=\"http://glimpse.cs.arizona.edu\">Glimpse</a>\n");
print("<form method=get action=\"search\">\n");
foreach ($Conf->allvariables) {
if ($Conf->variable($_) ne $Conf->vardefault($_)) {
print("<input type=hidden name=\"",$_, "\" ",
"value=\"", $Conf->variable($_), "\">\n");
}
}
print("Search for: <input type=text name=\"string\" ",
"value=\"",$searchtext,"\" size=60>\n",
"<input type=submit value=\"search\">\n",
# $Query->checkbox("case",0,0,"Case sensitive search"),
# $Query->checkbox("regexp",1,0,"Regular expression search"),
# $Query->popup_menu("fuzz",[0,1,2,3,4,5,6,7],0),
"</form>\n",
"<a href=\"search_help.html\">Hints</a> ",
"making queries.\n");
$| = 1; print('');
if ($searchtext ne "") {
print("<hr>\n");
unless (open(GLIMPSE, "-|")) {
open(STDERR, ">&STDOUT");
$!='';
exec($Conf->glimpsebin,"-H".$Conf->dbdir,'-y','-n',$searchtext);
print("Glimpse subprocess died unexpextedly: $!\n");
exit;
}
$numlines = 0;
while (<GLIMPSE>) {
$numlines++;
push(@glimpselines,$_);
if ($numlines > $maxhits) {
last;
}
}
close(GLIMPSE);
$retval = $? >> 8;
# The manpage for glimpse says that it returns 2 on syntax errors or
# inaccessible files. It seems this is not the case.
# We will have to work around it for the time being.
if ($retval == 0) {
if (@glimpselines == 0) {
print("No matching files<br>\n");
} else {
if ($numlines > $maxhits) {
print("<b> Too many hits, displaying first $maxhits</b><br>\n");
}
print("<h1>$searchtext</h1>\n");
$sourceroot = $Conf->sourceroot;
foreach $glimpseline (@glimpselines) {
$glimpseline =~ s/$sourceroot//;
($file, $line, $text) =
$glimpseline =~ /(.*?):\s*(\d+)\s*:(.*)/;
$text =~ s/&/&amp;/g;
$text =~ s/</&lt;/g;
$text =~ s/>/&gt;/g;
print(&fileref("$file, line $line", "/$file", $line),
" -- $text<br>\n");
}
}
} elsif ($retval == 1) {
$glimpsebin = $Conf->glimpsebin;
$glimpseresponse = join("<br>",@glimpselines);
$glimpseresponse =~ s/$glimpsebin/Reason/;
$glimpseresponse =~ s/glimpse: error in searching index//;
print("<b>Search failed</b><br>\n$glimpseresponse");
} else {
print("Unexpected returnvalue $retval from Glimpse\n");
}
}
}
($Conf, $HTTP, $Path) = &init;
$searchtext = $HTTP->{'param'}->{'string'};
&makeheader('search');
&search;
&makefooter('search');

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@@ -0,0 +1,235 @@
#!@perlbin@
# $Id: source,v 1.4 1998/05/14 11:59:22 argggh Exp $
# source -- Present sourcecode as html, complete with references
#
# Arne Georg Gleditsch <argggh@ifi.uio.no>
# Per Kristian Gjermshus <pergj@ifi.uio.no>
#
#
# 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 of the License, 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; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
######################################################################
use lib 'lib/';
use SimpleParse;
use LXR::Common;
use LXR::Config;
sub descexpand {
my $templ = shift;
if ($index{$filename}) {
return(&expandtemplate($templ,
('desctext', sub {return($index{$filename})})
));
} else {
return('');
}
}
sub diricon {
if ($filename eq '..') {
return(&fileref("<img src=\"/icons/back.gif\"".
" border=0 alt=\"Back\">",
$parentdir));
} else {
return(&fileref("<img src=\"/icons/folder.gif\"".
" border=0 alt=\"Folder\">",
$Path->{'virt'}.$filename));
}
}
sub dirname {
if ($filename eq '..') {
return(&fileref("Parent directory", $parentdir));
} else {
return(&fileref($filename, $Path->{'virt'}.$filename));
}
}
sub fileicon {
if ($filename =~ /^.*\.[ch]$/) {
return(&fileref("<img src=\"/icons/c.gif\"".
" border=0 alt=\"C file\">",
$Path->{'virt'}.$filename));
} elsif ($filename =~ /^.*\.(cpp|cc)$/) {
# TODO: Find a nice icon for c++ files (KDE?)
return(&fileref("<img src=\"/icons/c.gif\"".
" border=0 alt=\"C++ file\">",
$Path->{'virt'}.$filename));
} else {
return(&fileref("<img src=\"/icons/text.gif\"".
" border=0 alt=\"File\">",
$Path->{'virt'}.$filename));
}
}
sub filename {
return(&fileref($filename,
$Path->{'virt'}.$filename));
}
sub filesize {
my $templ = shift;
my $s = (-s $Path->{'real'}.$filename);
return(&expandtemplate($templ,
('bytes', sub {return($s)}),
('kbytes', sub {return($s/1024)}),
('mbytes', sub {return($s/1048576)})
));
}
sub modtime {
my @t = gmtime((stat($Path->{'real'}.$filename))[9]);
$t[5] += 1900;
$t[4]++;
return(sprintf("%04d-%02d-%02d %02d:%02d:%02d", reverse(splice(@t, 0, 6))));
}
sub direxpand {
my $templ = shift;
my $direx = '';
local $filename;
local $filestat;
foreach $filename (@dirs) {
$direx .= &expandtemplate($templ,
('iconlink', \&diricon),
('namelink', \&dirname),
('filesize', sub {return('')}),
('modtime', \&modtime),
('description', \&descexpand));
}
foreach $filename (@files) {
next if $filename =~ /^.*\.[oa]$|^core$|^00-INDEX$/;
$direx .= &expandtemplate($templ,
('iconlink', \&fileicon),
('namelink', \&filename),
('filesize', \&filesize),
('modtime', \&modtime),
('description', \&descexpand));
}
return($direx);
}
sub printdir {
my $template;
my $index;
local %index;
local @dirs;
local @files;
local $parentdir;
$template = "<ul>\n\$files{\n<li>\$iconlink \$namelink\n}</ul>\n";
if ($Conf->htmldir) {
unless (open(TEMPL, $Conf->htmldir)) {
&warning("Template ".$Conf->htmldir." does not exist.");
} else {
$save = $/; undef($/);
$template = <TEMPL>;
$/ = $save;
close(TEMPL);
}
}
if (opendir(DIR, $Path->{'real'})) {
foreach $f (sort(grep/^[^\.]/,readdir(DIR))) {
if (-d $Path->{'real'}.$f) {
push(@dirs,"$f/");
} else {
push(@files,$f);
}
}
closedir(DIR);
} else {
print("<p align=center>\n<i>This directory does not exist.</i>\n");
if ($Path->{'real'} =~ m#(.+[^/])[/]*$#) {
if (-e $1) {
&warning("Unable to open ".$Path->{'real'});
}
}
return;
}
if (-f $Path->{'real'}."00-INDEX") {
open(INDEX,$Path->{'real'}."00-INDEX") ||
&warning("Existing \"00-INDEX\" could not be opened.");
$save = $/; undef($/);
$index = <INDEX>;
$/ = $save;
%index = $index =~ /\n(\S*)\s*\n\t-\s*([^\n]*)/gs;
}
if ($Path->{'virt'} =~ m#^(.*/)[^/]*/$#) {
$parentdir = $1;
unshift(@dirs, '..');
}
print(&expandtemplate($template,
('files', \&direxpand)));
}
sub printfile {
unless ($Path->{'file'}) {
&printdir;
if (open(SRCFILE, $Path->{'real'}.README)) {
print("<hr><pre>");
&markupfile(\*SRCFILE, $Path->{'virt'}, 'README',
sub { print shift });
print("</pre>");
close(SRCFILE);
}
} else {
if (open(SRCFILE, $Path->{'realf'})) {
print("<pre>");
&markupfile(\*SRCFILE, $Path->{'virt'}, $Path->{'file'},
sub { print shift });
print("</pre>");
close(SRCFILE);
} else {
print("<p align=center>\n<i>This file does not exist.</i>\n");
if (-f $Path->{'real'}.$Path->{'file'}) {
&warning("Unable to open ".$Path->{'realf'});
}
}
}
}
($Conf, $HTTP, $Path) = &init;
&makeheader('source');
&printfile;
&makefooter('source');