[wip] draw_images(): Clean up pixel/character and box handling

[elinks/images.git] / COPYING

Note that the only valid version of the GPL as far as ELinks is
concerned is _this_ particular version of the license (ie v2, not v2.2
or v3.x or whatever), unless explicitly stated otherwise. That is at
least the policy for all pasky's contributions and the default - if you
want different policy for your patches, the best way to state it is by
a patch for your AUTHORS entry.

If pasky likes GPLv3, he might relicence his contributions for GPLv3
as well. The default policy should probably be that you trust pasky,
Jonas, or the current maintainer of the day to do the right thing (much
like it is in the Linux kernel). But this needs to be yet worked out
and agreed upon.

Other licences apply to some files in the source tree.  The following
files and their derivatives are not installed by "make install" and
typically don't appear in binary packages of ELinks, so we do not
include their complete licence notices in COPYING:

* acinclude.m4: Concatenated from config/m4/*.m4, which see.

* aclocal.m4, config/install-sh: Permissive licences.

* config/config.guess, config/config.sub: GPLv2 or later, plus special
  exception.

* config/m4/gettext.m4, config/m4/lcmessage.m4, config/m4/progtest.m4:
  "can be copied and used freely without restrictions".

* config/missing: GPLv2 or later.

* config/mkinstalldirs: Public domain.

* configure: "unlimited permission to copy, distribute and modify"
  from FSF, but this is also derived from configure.in, which is
  GPLv2.

* contrib/debian/rules: "GNU copyright 1997 to 1999 by Joey Hess",
  whatever that means.

* doc/tools/asciidoc/: GPLv2 or later.

* doc/tools/help2xml, po/perl/msgaccel-check,
  po/perl/msgaccel-prepare: ISC licence.

* po/perl/Locale/PO.pm: "same terms as Perl itself", i.e. GPLv1 or
  later or Artistic License.

* test/bigtextarea.html: Changing the text of GPLv2 is not allowed,
  but you could replace that with some other text.

* test/color.html: possibly derived from rgb.txt of X11?

The following files or their derivatives are installed by "make
install" or might otherwise be useful to include in binary packages,
so their full licence terms should be included here in COPYING:

* contrib/conv/mailcap.pl: GPLv2 or later.

* contrib/LinksOS2Icon.zip: Part public domain.

* contrib/links_wps.zip: Part GPLv2 or later.

* COPYING: Changing the text of GPLv2 is not allowed.

* doc/manual.txt: "Hold blameless the authors.  Any lawful use is
  allowed." which presumably applies to the entire ELinks manual,
  except the list of features is derived from features.conf, which
  is GPLv2.

* src/osdep/getifaddrs.c, src/osdep/getifaddrs.h: See "KTH 3-clause
  BSD-style licences" below.

* src/util/md5.c, Unicode/entities.txt: Public domain.

* src/util/sha1.c, src/util/sha1.h: Mozilla Public License Version 1.1
  (not later), or GNU General Public License Version 2 or later.
  ELinks uses these under GPL and does not include the text of the MPL.

* Unicode/8859_1.cp, Unicode/8859_2.cp, Unicode/8859_3.cp,
  Unicode/8859_4.cp, Unicode/8859_5.cp, Unicode/8859_6.cp,
  Unicode/8859_7.cp, Unicode/8859_8.cp, Unicode/8859_9.cp,
  Unicode/8859_10.cp, Unicode/8859_13.cp, Unicode/8859_14.cp,
  Unicode/8859_15.cp, Unicode/8859_16.cp, Unicode/koi8_r.cp,
  Unicode/cp437.cp, Unicode/cp737.cp, Unicode/cp850.cp,
  Unicode/cp852.cp, Unicode/cp866.cp, Unicode/cp1250.cp,
  Unicode/cp1251.cp, Unicode/cp1252.cp, Unicode/cp1256.cp,
  Unicode/cp1257.cp, Unicode/macroman.cp, Unicode/mac_lat2.cp:
  See "UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE"
  below.  These files were downloaded from directories under
  <http://www.unicode.org/Public/> and then modified for ELinks.

The following file has been removed, but because it was included in
some earlier releases without proper licence notices, it is listed
here to clarify the permissions.

* test/optgroup.html (added in 0.10pre0; documented in 0.11.6 and
  0.12pre3; removed after 0.12pre5): GNU free documentation licence;
  the author did not specify a version.

-----------------------------------------------------------------------

                    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
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\f
                    GNU GENERAL PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. This License applies to any program or other work which contains
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\f
These requirements apply to the modified work as a whole.  If
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In addition, mere aggregation of another work not based on the Program
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The source code for a work means the preferred form of the work for
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\f
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This section is intended to make thoroughly clear what is believed to
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\f
  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
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                     END OF TERMS AND CONDITIONS
\f
            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) <year>  <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) year  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.

-----------------------------------------------------------------------

"KTH 3-clause BSD-style licences"

In src/osdep/getifaddrs.c:

 * Copyright (c) 2000 - 2001 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.

In src/osdep/getifaddrs.h:

 * Copyright (c) 2000 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.

In both src/osdep/getifaddrs.c and src/osdep/getifaddrs.h:

 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.

-----------------------------------------------------------------------

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