root/swish-e/trunk/COPYING

Revision 1735, 13.7 kB (checked in by karman, 3 years ago)

license clarified; TODO list reduced

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1 Swish-e is free software; you can redistribute it and/or modify
2 it under the terms of the GNU General Public License as published by
3 the Free Software Foundation; either version 2 of the License, or
4 (at your option) any later version.
5
6 See below for version 2 of the GNU GPL.
7
8 Unless otherwise indicated, all source files are
9 Copyright (C) 2005, the Swish-e Project, http://swish-e.org.
10
11 Swish-e includes a library for searching with a well-defined API. The library
12 is named libswish-e.
13
14 Linking libswish-e statically or dynamically with other modules is making a
15 combined work based on Swish-e.  Thus, the terms and conditions of the GNU
16 General Public License cover the whole combination.
17
18 As a special exception, the copyright holders of Swish-e give you
19 permission to link Swish-e with independent modules that communicate with
20 Swish-e solely through the libswish-e API interface, regardless of the
21 license terms of these independent modules, and to copy and distribute the
22 resulting combined work under terms of your choice, provided that
23 every copy of the combined work is accompanied by, or provides a URL link to,
24 a complete copy of the source code of Swish-e
25 (the version of Swish-e used to produce the combined work),
26 being distributed under the terms of the GNU General
27 Public License plus this exception.  An independent module is a module
28 which is not derived from or based on Swish-e.
29
30 Note that people who make modified versions of Swish-e are not obligated
31 to grant this special exception for their modified versions; it is
32 their choice whether to do so.  The GNU General Public License gives
33 permission to release a modified version without this exception; this
34 exception also makes it possible to release a modified version which
35 carries forward this exception.
36
37
38
39                     GNU GENERAL PUBLIC LICENSE
40    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
41
42   0. This License applies to any program or other work which contains
43 a notice placed by the copyright holder saying it may be distributed
44 under the terms of this General Public License.  The "Program", below,
45 refers to any such program or work, and a "work based on the Program"
46 means either the Program or any derivative work under copyright law:
47 that is to say, a work containing the Program or a portion of it,
48 either verbatim or with modifications and/or translated into another
49 language.  (Hereinafter, translation is included without limitation in
50 the term "modification".)  Each licensee is addressed as "you".
51
52 Activities other than copying, distribution and modification are not
53 covered by this License; they are outside its scope.  The act of
54 running the Program is not restricted, and the output from the Program
55 is covered only if its contents constitute a work based on the
56 Program (independent of having been made by running the Program).
57 Whether that is true depends on what the Program does.
58
59   1. You may copy and distribute verbatim copies of the Program's
60 source code as you receive it, in any medium, provided that you
61 conspicuously and appropriately publish on each copy an appropriate
62 copyright notice and disclaimer of warranty; keep intact all the
63 notices that refer to this License and to the absence of any warranty;
64 and give any other recipients of the Program a copy of this License
65 along with the Program.
66
67 You may charge a fee for the physical act of transferring a copy, and
68 you may at your option offer warranty protection in exchange for a fee.
69
70   2. You may modify your copy or copies of the Program or any portion
71 of it, thus forming a work based on the Program, and copy and
72 distribute such modifications or work under the terms of Section 1
73 above, provided that you also meet all of these conditions:
74
75     a) You must cause the modified files to carry prominent notices
76     stating that you changed the files and the date of any change.
77
78     b) You must cause any work that you distribute or publish, that in
79     whole or in part contains or is derived from the Program or any
80     part thereof, to be licensed as a whole at no charge to all third
81     parties under the terms of this License.
82
83     c) If the modified program normally reads commands interactively
84     when run, you must cause it, when started running for such
85     interactive use in the most ordinary way, to print or display an
86     announcement including an appropriate copyright notice and a
87     notice that there is no warranty (or else, saying that you provide
88     a warranty) and that users may redistribute the program under
89     these conditions, and telling the user how to view a copy of this
90     License.  (Exception: if the Program itself is interactive but
91     does not normally print such an announcement, your work based on
92     the Program is not required to print an announcement.)
93
94 These requirements apply to the modified work as a whole.  If
95 identifiable sections of that work are not derived from the Program,
96 and can be reasonably considered independent and separate works in
97 themselves, then this License, and its terms, do not apply to those
98 sections when you distribute them as separate works.  But when you
99 distribute the same sections as part of a whole which is a work based
100 on the Program, the distribution of the whole must be on the terms of
101 this License, whose permissions for other licensees extend to the
102 entire whole, and thus to each and every part regardless of who wrote it.
103
104 Thus, it is not the intent of this section to claim rights or contest
105 your rights to work written entirely by you; rather, the intent is to
106 exercise the right to control the distribution of derivative or
107 collective works based on the Program.
108
109 In addition, mere aggregation of another work not based on the Program
110 with the Program (or with a work based on the Program) on a volume of
111 a storage or distribution medium does not bring the other work under
112 the scope of this License.
113
114   3. You may copy and distribute the Program (or a work based on it,
115 under Section 2) in object code or executable form under the terms of
116 Sections 1 and 2 above provided that you also do one of the following:
117
118     a) Accompany it with the complete corresponding machine-readable
119     source code, which must be distributed under the terms of Sections
120     1 and 2 above on a medium customarily used for software interchange; or,
121
122     b) Accompany it with a written offer, valid for at least three
123     years, to give any third party, for a charge no more than your
124     cost of physically performing source distribution, a complete
125     machine-readable copy of the corresponding source code, to be
126     distributed under the terms of Sections 1 and 2 above on a medium
127     customarily used for software interchange; or,
128
129     c) Accompany it with the information you received as to the offer
130     to distribute corresponding source code.  (This alternative is
131     allowed only for noncommercial distribution and only if you
132     received the program in object code or executable form with such
133     an offer, in accord with Subsection b above.)
134
135 The source code for a work means the preferred form of the work for
136 making modifications to it.  For an executable work, complete source
137 code means all the source code for all modules it contains, plus any
138 associated interface definition files, plus the scripts used to
139 control compilation and installation of the executable.  However, as a
140 special exception, the source code distributed need not include
141 anything that is normally distributed (in either source or binary
142 form) with the major components (compiler, kernel, and so on) of the
143 operating system on which the executable runs, unless that component
144 itself accompanies the executable.
145
146 If distribution of executable or object code is made by offering
147 access to copy from a designated place, then offering equivalent
148 access to copy the source code from the same place counts as
149 distribution of the source code, even though third parties are not
150 compelled to copy the source along with the object code.
151  
152   4. You may not copy, modify, sublicense, or distribute the Program
153 except as expressly provided under this License.  Any attempt
154 otherwise to copy, modify, sublicense or distribute the Program is
155 void, and will automatically terminate your rights under this License.
156 However, parties who have received copies, or rights, from you under
157 this License will not have their licenses terminated so long as such
158 parties remain in full compliance.
159
160   5. You are not required to accept this License, since you have not
161 signed it.  However, nothing else grants you permission to modify or
162 distribute the Program or its derivative works.  These actions are
163 prohibited by law if you do not accept this License.  Therefore, by
164 modifying or distributing the Program (or any work based on the
165 Program), you indicate your acceptance of this License to do so, and
166 all its terms and conditions for copying, distributing or modifying
167 the Program or works based on it.
168
169   6. Each time you redistribute the Program (or any work based on the
170 Program), the recipient automatically receives a license from the
171 original licensor to copy, distribute or modify the Program subject to
172 these terms and conditions.  You may not impose any further
173 restrictions on the recipients' exercise of the rights granted herein.
174 You are not responsible for enforcing compliance by third parties to
175 this License.
176
177   7. If, as a consequence of a court judgment or allegation of patent
178 infringement or for any other reason (not limited to patent issues),
179 conditions are imposed on you (whether by court order, agreement or
180 otherwise) that contradict the conditions of this License, they do not
181 excuse you from the conditions of this License.  If you cannot
182 distribute so as to satisfy simultaneously your obligations under this
183 License and any other pertinent obligations, then as a consequence you
184 may not distribute the Program at all.  For example, if a patent
185 license would not permit royalty-free redistribution of the Program by
186 all those who receive copies directly or indirectly through you, then
187 the only way you could satisfy both it and this License would be to
188 refrain entirely from distribution of the Program.
189
190 If any portion of this section is held invalid or unenforceable under
191 any particular circumstance, the balance of the section is intended to
192 apply and the section as a whole is intended to apply in other
193 circumstances.
194
195 It is not the purpose of this section to induce you to infringe any
196 patents or other property right claims or to contest validity of any
197 such claims; this section has the sole purpose of protecting the
198 integrity of the free software distribution system, which is
199 implemented by public license practices.  Many people have made
200 generous contributions to the wide range of software distributed
201 through that system in reliance on consistent application of that
202 system; it is up to the author/donor to decide if he or she is willing
203 to distribute software through any other system and a licensee cannot
204 impose that choice.
205
206 This section is intended to make thoroughly clear what is believed to
207 be a consequence of the rest of this License.
208  
209   8. If the distribution and/or use of the Program is restricted in
210 certain countries either by patents or by copyrighted interfaces, the
211 original copyright holder who places the Program under this License
212 may add an explicit geographical distribution limitation excluding
213 those countries, so that distribution is permitted only in or among
214 countries not thus excluded.  In such case, this License incorporates
215 the limitation as if written in the body of this License.
216
217   9. The Free Software Foundation may publish revised and/or new versions
218 of the General Public License from time to time.  Such new versions will
219 be similar in spirit to the present version, but may differ in detail to
220 address new problems or concerns.
221
222 Each version is given a distinguishing version number.  If the Program
223 specifies a version number of this License which applies to it and "any
224 later version", you have the option of following the terms and conditions
225 either of that version or of any later version published by the Free
226 Software Foundation.  If the Program does not specify a version number of
227 this License, you may choose any version ever published by the Free Software
228 Foundation.
229
230   10. If you wish to incorporate parts of the Program into other free
231 programs whose distribution conditions are different, write to the author
232 to ask for permission.  For software which is copyrighted by the Free
233 Software Foundation, write to the Free Software Foundation; we sometimes
234 make exceptions for this.  Our decision will be guided by the two goals
235 of preserving the free status of all derivatives of our free software and
236 of promoting the sharing and reuse of software generally.
237
238                             NO WARRANTY
239
240   11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
241 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
242 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
243 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
244 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
245 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
246 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
247 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
248 REPAIR OR CORRECTION.
249
250   12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
251 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
252 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
253 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
254 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
255 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
256 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
257 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
258 POSSIBILITY OF SUCH DAMAGES.
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