Upload mod
This commit is contained in:
Coder12a
parent
16c5401b2e
commit
1d11788eba
520
LICENSE
520
LICENSE
@ -1,22 +1,508 @@
|
|||||||
The MIT License (MIT)
|
Based on FlatDB(MIT)
|
||||||
|
---------------------------
|
||||||
|
Copyright (C) 2018 Coder12a
|
||||||
|
|
||||||
Copyright (c) 2015 Peer Zeng
|
GNU LESSER GENERAL PUBLIC LICENSE
|
||||||
|
Version 2.1, February 1999
|
||||||
|
|
||||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
|
||||||
of this software and associated documentation files (the "Software"), to deal
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||||
in the Software without restriction, including without limitation the rights
|
Everyone is permitted to copy and distribute verbatim copies
|
||||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
of this license document, but changing it is not allowed.
|
||||||
copies of the Software, and to permit persons to whom the Software is
|
|
||||||
furnished to do so, subject to the following conditions:
|
|
||||||
|
|
||||||
The above copyright notice and this permission notice shall be included in all
|
[This is the first released version of the Lesser GPL. It also counts
|
||||||
copies or substantial portions of the Software.
|
as the successor of the GNU Library Public License, version 2, hence
|
||||||
|
the version number 2.1.]
|
||||||
|
|
||||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
Preamble
|
||||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
||||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
||||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
||||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
||||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
||||||
SOFTWARE.
|
|
||||||
|
|
||||||
|
The licenses for most software are designed to take away your
|
||||||
|
freedom to share and change it. By contrast, the GNU General Public
|
||||||
|
Licenses are intended to guarantee your freedom to share and change
|
||||||
|
free software--to make sure the software is free for all its users.
|
||||||
|
|
||||||
|
This license, the Lesser General Public License, applies to some
|
||||||
|
specially designated software packages--typically libraries--of the
|
||||||
|
Free Software Foundation and other authors who decide to use it. You
|
||||||
|
can use it too, but we suggest you first think carefully about whether
|
||||||
|
this license or the ordinary General Public License is the better
|
||||||
|
strategy to use in any particular case, based on the explanations below.
|
||||||
|
|
||||||
|
When we speak of free software, we are referring to freedom of use,
|
||||||
|
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 and use pieces of
|
||||||
|
it in new free programs; and that you are informed that you can do
|
||||||
|
these things.
|
||||||
|
|
||||||
|
To protect your rights, we need to make restrictions that forbid
|
||||||
|
distributors to deny you these rights or to ask you to surrender these
|
||||||
|
rights. These restrictions translate to certain responsibilities for
|
||||||
|
you if you distribute copies of the library or if you modify it.
|
||||||
|
|
||||||
|
For example, if you distribute copies of the library, whether gratis
|
||||||
|
or for a fee, you must give the recipients all the rights that we gave
|
||||||
|
you. You must make sure that they, too, receive or can get the source
|
||||||
|
code. If you link other code with the library, you must provide
|
||||||
|
complete object files to the recipients, so that they can relink them
|
||||||
|
with the library after making changes to the library and recompiling
|
||||||
|
it. And you must show them these terms so they know their rights.
|
||||||
|
|
||||||
|
We protect your rights with a two-step method: (1) we copyright the
|
||||||
|
library, and (2) we offer you this license, which gives you legal
|
||||||
|
permission to copy, distribute and/or modify the library.
|
||||||
|
|
||||||
|
To protect each distributor, we want to make it very clear that
|
||||||
|
there is no warranty for the free library. Also, if the library is
|
||||||
|
modified by someone else and passed on, the recipients should know
|
||||||
|
that what they have is not the original version, so that the original
|
||||||
|
author's reputation will not be affected by problems that might be
|
||||||
|
introduced by others.
|
||||||
|
|
||||||
|
Finally, software patents pose a constant threat to the existence of
|
||||||
|
any free program. We wish to make sure that a company cannot
|
||||||
|
effectively restrict the users of a free program by obtaining a
|
||||||
|
restrictive license from a patent holder. Therefore, we insist that
|
||||||
|
any patent license obtained for a version of the library must be
|
||||||
|
consistent with the full freedom of use specified in this license.
|
||||||
|
|
||||||
|
Most GNU software, including some libraries, is covered by the
|
||||||
|
ordinary GNU General Public License. This license, the GNU Lesser
|
||||||
|
General Public License, applies to certain designated libraries, and
|
||||||
|
is quite different from the ordinary General Public License. We use
|
||||||
|
this license for certain libraries in order to permit linking those
|
||||||
|
libraries into non-free programs.
|
||||||
|
|
||||||
|
When a program is linked with a library, whether statically or using
|
||||||
|
a shared library, the combination of the two is legally speaking a
|
||||||
|
combined work, a derivative of the original library. The ordinary
|
||||||
|
General Public License therefore permits such linking only if the
|
||||||
|
entire combination fits its criteria of freedom. The Lesser General
|
||||||
|
Public License permits more lax criteria for linking other code with
|
||||||
|
the library.
|
||||||
|
|
||||||
|
We call this license the "Lesser" General Public License because it
|
||||||
|
does Less to protect the user's freedom than the ordinary General
|
||||||
|
Public License. It also provides other free software developers Less
|
||||||
|
of an advantage over competing non-free programs. These disadvantages
|
||||||
|
are the reason we use the ordinary General Public License for many
|
||||||
|
libraries. However, the Lesser license provides advantages in certain
|
||||||
|
special circumstances.
|
||||||
|
|
||||||
|
For example, on rare occasions, there may be a special need to
|
||||||
|
encourage the widest possible use of a certain library, so that it becomes
|
||||||
|
a de-facto standard. To achieve this, non-free programs must be
|
||||||
|
allowed to use the library. A more frequent case is that a free
|
||||||
|
library does the same job as widely used non-free libraries. In this
|
||||||
|
case, there is little to gain by limiting the free library to free
|
||||||
|
software only, so we use the Lesser General Public License.
|
||||||
|
|
||||||
|
In other cases, permission to use a particular library in non-free
|
||||||
|
programs enables a greater number of people to use a large body of
|
||||||
|
free software. For example, permission to use the GNU C Library in
|
||||||
|
non-free programs enables many more people to use the whole GNU
|
||||||
|
operating system, as well as its variant, the GNU/Linux operating
|
||||||
|
system.
|
||||||
|
|
||||||
|
Although the Lesser General Public License is Less protective of the
|
||||||
|
users' freedom, it does ensure that the user of a program that is
|
||||||
|
linked with the Library has the freedom and the wherewithal to run
|
||||||
|
that program using a modified version of the Library.
|
||||||
|
|
||||||
|
The precise terms and conditions for copying, distribution and
|
||||||
|
modification follow. Pay close attention to the difference between a
|
||||||
|
"work based on the library" and a "work that uses the library". The
|
||||||
|
former contains code derived from the library, whereas the latter must
|
||||||
|
be combined with the library in order to run.
|
||||||
|
|
||||||
|
GNU LESSER GENERAL PUBLIC LICENSE
|
||||||
|
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
||||||
|
|
||||||
|
0. This License Agreement applies to any software library or other
|
||||||
|
program which contains a notice placed by the copyright holder or
|
||||||
|
other authorized party saying it may be distributed under the terms of
|
||||||
|
this Lesser General Public License (also called "this License").
|
||||||
|
Each licensee is addressed as "you".
|
||||||
|
|
||||||
|
A "library" means a collection of software functions and/or data
|
||||||
|
prepared so as to be conveniently linked with application programs
|
||||||
|
(which use some of those functions and data) to form executables.
|
||||||
|
|
||||||
|
The "Library", below, refers to any such software library or work
|
||||||
|
which has been distributed under these terms. A "work based on the
|
||||||
|
Library" means either the Library or any derivative work under
|
||||||
|
copyright law: that is to say, a work containing the Library or a
|
||||||
|
portion of it, either verbatim or with modifications and/or translated
|
||||||
|
straightforwardly into another language. (Hereinafter, translation is
|
||||||
|
included without limitation in the term "modification".)
|
||||||
|
|
||||||
|
"Source code" for a work means the preferred form of the work for
|
||||||
|
making modifications to it. For a library, 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 library.
|
||||||
|
|
||||||
|
Activities other than copying, distribution and modification are not
|
||||||
|
covered by this License; they are outside its scope. The act of
|
||||||
|
running a program using the Library is not restricted, and output from
|
||||||
|
such a program is covered only if its contents constitute a work based
|
||||||
|
on the Library (independent of the use of the Library in a tool for
|
||||||
|
writing it). Whether that is true depends on what the Library does
|
||||||
|
and what the program that uses the Library does.
|
||||||
|
|
||||||
|
1. You may copy and distribute verbatim copies of the Library's
|
||||||
|
complete 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 distribute a copy of this License along with the
|
||||||
|
Library.
|
||||||
|
|
||||||
|
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 Library or any portion
|
||||||
|
of it, thus forming a work based on the Library, 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) The modified work must itself be a software library.
|
||||||
|
|
||||||
|
b) You must cause the files modified to carry prominent notices
|
||||||
|
stating that you changed the files and the date of any change.
|
||||||
|
|
||||||
|
c) You must cause the whole of the work to be licensed at no
|
||||||
|
charge to all third parties under the terms of this License.
|
||||||
|
|
||||||
|
d) If a facility in the modified Library refers to a function or a
|
||||||
|
table of data to be supplied by an application program that uses
|
||||||
|
the facility, other than as an argument passed when the facility
|
||||||
|
is invoked, then you must make a good faith effort to ensure that,
|
||||||
|
in the event an application does not supply such function or
|
||||||
|
table, the facility still operates, and performs whatever part of
|
||||||
|
its purpose remains meaningful.
|
||||||
|
|
||||||
|
(For example, a function in a library to compute square roots has
|
||||||
|
a purpose that is entirely well-defined independent of the
|
||||||
|
application. Therefore, Subsection 2d requires that any
|
||||||
|
application-supplied function or table used by this function must
|
||||||
|
be optional: if the application does not supply it, the square
|
||||||
|
root function must still compute square roots.)
|
||||||
|
|
||||||
|
These requirements apply to the modified work as a whole. If
|
||||||
|
identifiable sections of that work are not derived from the Library,
|
||||||
|
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 Library, 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 Library.
|
||||||
|
|
||||||
|
In addition, mere aggregation of another work not based on the Library
|
||||||
|
with the Library (or with a work based on the Library) on a volume of
|
||||||
|
a storage or distribution medium does not bring the other work under
|
||||||
|
the scope of this License.
|
||||||
|
|
||||||
|
3. You may opt to apply the terms of the ordinary GNU General Public
|
||||||
|
License instead of this License to a given copy of the Library. To do
|
||||||
|
this, you must alter all the notices that refer to this License, so
|
||||||
|
that they refer to the ordinary GNU General Public License, version 2,
|
||||||
|
instead of to this License. (If a newer version than version 2 of the
|
||||||
|
ordinary GNU General Public License has appeared, then you can specify
|
||||||
|
that version instead if you wish.) Do not make any other change in
|
||||||
|
these notices.
|
||||||
|
|
||||||
|
Once this change is made in a given copy, it is irreversible for
|
||||||
|
that copy, so the ordinary GNU General Public License applies to all
|
||||||
|
subsequent copies and derivative works made from that copy.
|
||||||
|
|
||||||
|
This option is useful when you wish to copy part of the code of
|
||||||
|
the Library into a program that is not a library.
|
||||||
|
|
||||||
|
4. You may copy and distribute the Library (or a portion or
|
||||||
|
derivative of it, under Section 2) in object code or executable form
|
||||||
|
under the terms of Sections 1 and 2 above provided that you 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.
|
||||||
|
|
||||||
|
If distribution of 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 satisfies the requirement to
|
||||||
|
distribute the source code, even though third parties are not
|
||||||
|
compelled to copy the source along with the object code.
|
||||||
|
|
||||||
|
5. A program that contains no derivative of any portion of the
|
||||||
|
Library, but is designed to work with the Library by being compiled or
|
||||||
|
linked with it, is called a "work that uses the Library". Such a
|
||||||
|
work, in isolation, is not a derivative work of the Library, and
|
||||||
|
therefore falls outside the scope of this License.
|
||||||
|
|
||||||
|
However, linking a "work that uses the Library" with the Library
|
||||||
|
creates an executable that is a derivative of the Library (because it
|
||||||
|
contains portions of the Library), rather than a "work that uses the
|
||||||
|
library". The executable is therefore covered by this License.
|
||||||
|
Section 6 states terms for distribution of such executables.
|
||||||
|
|
||||||
|
When a "work that uses the Library" uses material from a header file
|
||||||
|
that is part of the Library, the object code for the work may be a
|
||||||
|
derivative work of the Library even though the source code is not.
|
||||||
|
Whether this is true is especially significant if the work can be
|
||||||
|
linked without the Library, or if the work is itself a library. The
|
||||||
|
threshold for this to be true is not precisely defined by law.
|
||||||
|
|
||||||
|
If such an object file uses only numerical parameters, data
|
||||||
|
structure layouts and accessors, and small macros and small inline
|
||||||
|
functions (ten lines or less in length), then the use of the object
|
||||||
|
file is unrestricted, regardless of whether it is legally a derivative
|
||||||
|
work. (Executables containing this object code plus portions of the
|
||||||
|
Library will still fall under Section 6.)
|
||||||
|
|
||||||
|
Otherwise, if the work is a derivative of the Library, you may
|
||||||
|
distribute the object code for the work under the terms of Section 6.
|
||||||
|
Any executables containing that work also fall under Section 6,
|
||||||
|
whether or not they are linked directly with the Library itself.
|
||||||
|
|
||||||
|
6. As an exception to the Sections above, you may also combine or
|
||||||
|
link a "work that uses the Library" with the Library to produce a
|
||||||
|
work containing portions of the Library, and distribute that work
|
||||||
|
under terms of your choice, provided that the terms permit
|
||||||
|
modification of the work for the customer's own use and reverse
|
||||||
|
engineering for debugging such modifications.
|
||||||
|
|
||||||
|
You must give prominent notice with each copy of the work that the
|
||||||
|
Library is used in it and that the Library and its use are covered by
|
||||||
|
this License. You must supply a copy of this License. If the work
|
||||||
|
during execution displays copyright notices, you must include the
|
||||||
|
copyright notice for the Library among them, as well as a reference
|
||||||
|
directing the user to the copy of this License. Also, you must do one
|
||||||
|
of these things:
|
||||||
|
|
||||||
|
a) Accompany the work with the complete corresponding
|
||||||
|
machine-readable source code for the Library including whatever
|
||||||
|
changes were used in the work (which must be distributed under
|
||||||
|
Sections 1 and 2 above); and, if the work is an executable linked
|
||||||
|
with the Library, with the complete machine-readable "work that
|
||||||
|
uses the Library", as object code and/or source code, so that the
|
||||||
|
user can modify the Library and then relink to produce a modified
|
||||||
|
executable containing the modified Library. (It is understood
|
||||||
|
that the user who changes the contents of definitions files in the
|
||||||
|
Library will not necessarily be able to recompile the application
|
||||||
|
to use the modified definitions.)
|
||||||
|
|
||||||
|
b) Use a suitable shared library mechanism for linking with the
|
||||||
|
Library. A suitable mechanism is one that (1) uses at run time a
|
||||||
|
copy of the library already present on the user's computer system,
|
||||||
|
rather than copying library functions into the executable, and (2)
|
||||||
|
will operate properly with a modified version of the library, if
|
||||||
|
the user installs one, as long as the modified version is
|
||||||
|
interface-compatible with the version that the work was made with.
|
||||||
|
|
||||||
|
c) Accompany the work with a written offer, valid for at
|
||||||
|
least three years, to give the same user the materials
|
||||||
|
specified in Subsection 6a, above, for a charge no more
|
||||||
|
than the cost of performing this distribution.
|
||||||
|
|
||||||
|
d) If distribution of the work is made by offering access to copy
|
||||||
|
from a designated place, offer equivalent access to copy the above
|
||||||
|
specified materials from the same place.
|
||||||
|
|
||||||
|
e) Verify that the user has already received a copy of these
|
||||||
|
materials or that you have already sent this user a copy.
|
||||||
|
|
||||||
|
For an executable, the required form of the "work that uses the
|
||||||
|
Library" must include any data and utility programs needed for
|
||||||
|
reproducing the executable from it. However, as a special exception,
|
||||||
|
the materials to be 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.
|
||||||
|
|
||||||
|
It may happen that this requirement contradicts the license
|
||||||
|
restrictions of other proprietary libraries that do not normally
|
||||||
|
accompany the operating system. Such a contradiction means you cannot
|
||||||
|
use both them and the Library together in an executable that you
|
||||||
|
distribute.
|
||||||
|
|
||||||
|
7. You may place library facilities that are a work based on the
|
||||||
|
Library side-by-side in a single library together with other library
|
||||||
|
facilities not covered by this License, and distribute such a combined
|
||||||
|
library, provided that the separate distribution of the work based on
|
||||||
|
the Library and of the other library facilities is otherwise
|
||||||
|
permitted, and provided that you do these two things:
|
||||||
|
|
||||||
|
a) Accompany the combined library with a copy of the same work
|
||||||
|
based on the Library, uncombined with any other library
|
||||||
|
facilities. This must be distributed under the terms of the
|
||||||
|
Sections above.
|
||||||
|
|
||||||
|
b) Give prominent notice with the combined library of the fact
|
||||||
|
that part of it is a work based on the Library, and explaining
|
||||||
|
where to find the accompanying uncombined form of the same work.
|
||||||
|
|
||||||
|
8. You may not copy, modify, sublicense, link with, or distribute
|
||||||
|
the Library except as expressly provided under this License. Any
|
||||||
|
attempt otherwise to copy, modify, sublicense, link with, or
|
||||||
|
distribute the Library 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.
|
||||||
|
|
||||||
|
9. 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 Library or its derivative works. These actions are
|
||||||
|
prohibited by law if you do not accept this License. Therefore, by
|
||||||
|
modifying or distributing the Library (or any work based on the
|
||||||
|
Library), you indicate your acceptance of this License to do so, and
|
||||||
|
all its terms and conditions for copying, distributing or modifying
|
||||||
|
the Library or works based on it.
|
||||||
|
|
||||||
|
10. Each time you redistribute the Library (or any work based on the
|
||||||
|
Library), the recipient automatically receives a license from the
|
||||||
|
original licensor to copy, distribute, link with or modify the Library
|
||||||
|
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 with
|
||||||
|
this License.
|
||||||
|
|
||||||
|
11. 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 Library at all. For example, if a patent
|
||||||
|
license would not permit royalty-free redistribution of the Library 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 Library.
|
||||||
|
|
||||||
|
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.
|
||||||
|
|
||||||
|
12. If the distribution and/or use of the Library is restricted in
|
||||||
|
certain countries either by patents or by copyrighted interfaces, the
|
||||||
|
original copyright holder who places the Library 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.
|
||||||
|
|
||||||
|
13. The Free Software Foundation may publish revised and/or new
|
||||||
|
versions of the Lesser 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 Library
|
||||||
|
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 Library does not specify a
|
||||||
|
license version number, you may choose any version ever published by
|
||||||
|
the Free Software Foundation.
|
||||||
|
|
||||||
|
14. If you wish to incorporate parts of the Library into other free
|
||||||
|
programs whose distribution conditions are incompatible with these,
|
||||||
|
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
|
||||||
|
|
||||||
|
15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
|
||||||
|
WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
|
||||||
|
EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
|
||||||
|
OTHER PARTIES PROVIDE THE LIBRARY "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
|
||||||
|
LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
|
||||||
|
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||||
|
|
||||||
|
16. 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 LIBRARY 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
|
||||||
|
LIBRARY (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 LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
|
||||||
|
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
|
||||||
|
DAMAGES.
|
||||||
|
|
||||||
|
END OF TERMS AND CONDITIONS
|
||||||
|
|
||||||
|
How to Apply These Terms to Your New Libraries
|
||||||
|
|
||||||
|
If you develop a new library, and you want it to be of the greatest
|
||||||
|
possible use to the public, we recommend making it free software that
|
||||||
|
everyone can redistribute and change. You can do so by permitting
|
||||||
|
redistribution under these terms (or, alternatively, under the terms of the
|
||||||
|
ordinary General Public License).
|
||||||
|
|
||||||
|
To apply these terms, attach the following notices to the library. 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 library's name and a brief idea of what it does.>
|
||||||
|
Copyright (C) <year> <name of author>
|
||||||
|
|
||||||
|
This library is free software; you can redistribute it and/or
|
||||||
|
modify it under the terms of the GNU Lesser General Public
|
||||||
|
License as published by the Free Software Foundation; either
|
||||||
|
version 2.1 of the License, or (at your option) any later version.
|
||||||
|
|
||||||
|
This library 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
|
||||||
|
Lesser General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU Lesser General Public
|
||||||
|
License along with this library; if not, write to the Free Software
|
||||||
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
|
||||||
|
USA
|
||||||
|
|
||||||
|
Also add information on how to contact you by electronic and paper mail.
|
||||||
|
|
||||||
|
You should also get your employer (if you work as a programmer) or your
|
||||||
|
school, if any, to sign a "copyright disclaimer" for the library, if
|
||||||
|
necessary. Here is a sample; alter the names:
|
||||||
|
|
||||||
|
Yoyodyne, Inc., hereby disclaims all copyright interest in the
|
||||||
|
library `Frob' (a library for tweaking knobs) written by James Random
|
||||||
|
Hacker.
|
||||||
|
|
||||||
|
<signature of Ty Coon>, 1 April 1990
|
||||||
|
Ty Coon, President of Vice
|
||||||
|
|
||||||
|
That's all there is to it!
|
||||||
163
README-zh.md
163
README-zh.md
@ -1,163 +0,0 @@
|
|||||||
FlatDB
|
|
||||||
===========
|
|
||||||
|
|
||||||
FlatDB是一个Lua扩展库，实现一个无服务器的零配置的NoSQL数据引擎。<br>
|
|
||||||
它提供一个由Lua表构成的键值对存储系统。
|
|
||||||
|
|
||||||
FlatDB的使用情境
|
|
||||||
===========
|
|
||||||
|
|
||||||
当您想使用SQLite存储一些数据，而不必用到SQL查询的时候，可以考虑使用FlatDB代替之。<br>
|
|
||||||
如果您的程序使用的语言恰好是Lua，或者嵌入了Lua作为扩展脚本的话，那么就尝试使用FlatDB来存储数据吧。
|
|
||||||
|
|
||||||
概念
|
|
||||||
==========
|
|
||||||
|
|
||||||
| FlatDB | 磁盘 | Lua |
|
|
||||||
|:--------------:|:------------:|:----------:|
|
|
||||||
| 数据库 | 目录 | 表 |
|
|
||||||
| 页（Page） | 文件 | 表 |
|
|
||||||
| 键值对 | 文件内容 | 键值对 |
|
|
||||||
|
|
||||||
该表反映的是FlatDB、磁盘和Lua三个层面的对应关系。<br>
|
|
||||||
FlatDB将一个目录看作数据库，映射到一个Lua表上。
|
|
||||||
该Lua表的下级也是一些Lua表，对应FlatDB的页（Page），它将被存储到数据库目录下同名的文件中。
|
|
||||||
这些文件的内容正是页（Page）中的键值对，即Lua表序列化后的字符串。
|
|
||||||
键值对中的键和值可以是Lua中所有能够被序列化的类型，即除了协程、用户数据、C数据和C函数外的类型。
|
|
||||||
|
|
||||||
用法
|
|
||||||
==========
|
|
||||||
|
|
||||||
将*flatdb.lua*文件复制到你的项目所在或存储Lua扩展库的目录中。<br>
|
|
||||||
然后在用到它的Lua文件中写上这句话：
|
|
||||||
```lua
|
|
||||||
local flatdb = require 'flatdb'
|
|
||||||
```
|
|
||||||
|
|
||||||
1. 将目录作为数据库映射到Lua表中
|
|
||||||
|
|
||||||
```lua
|
|
||||||
local db = flatdb('./db')
|
|
||||||
```
|
|
||||||
|
|
||||||
2. 打开或创建一个页（Page）
|
|
||||||
|
|
||||||
```lua
|
|
||||||
if not db.page then
|
|
||||||
db.page = {}
|
|
||||||
end
|
|
||||||
```
|
|
||||||
|
|
||||||
3. 往页（Page）中写入键值对数据
|
|
||||||
|
|
||||||
```lua
|
|
||||||
db.page.key = 'value'
|
|
||||||
-- equivalent to db.page['key'] = 'value'
|
|
||||||
```
|
|
||||||
|
|
||||||
4. 读取页（Page）中的数据
|
|
||||||
|
|
||||||
```lua
|
|
||||||
print(db.page.key) -- prints 'value'
|
|
||||||
```
|
|
||||||
|
|
||||||
5. 将所有页（Page）数据保存在同名的文件中
|
|
||||||
|
|
||||||
```lua
|
|
||||||
db:save()
|
|
||||||
-- 'page' will be saved to './db/page'
|
|
||||||
```
|
|
||||||
|
|
||||||
更多用法可参考另一个项目[Ledis](https://github.com/uleelx/ledis)（一个使用FlatDB作为存储后端的Redis实现）。
|
|
||||||
|
|
||||||
范例概览
|
|
||||||
==========
|
|
||||||
|
|
||||||
```lua
|
|
||||||
-- 这是一个以FlatDB作为存储引擎的日志系统例子
|
|
||||||
|
|
||||||
local flatdb = require("flatdb")
|
|
||||||
|
|
||||||
local logger = flatdb("./log")
|
|
||||||
|
|
||||||
local count = 0
|
|
||||||
|
|
||||||
local function common_log(logger, level, message)
|
|
||||||
local today = os.date("%Y-%m-%d")
|
|
||||||
if logger[today] == nil then logger[today] = {} end
|
|
||||||
if logger[today][level] == nil then logger[today][level] = {} end
|
|
||||||
table.insert(logger[today][level], {
|
|
||||||
timestamp = os.time(),
|
|
||||||
level = level,
|
|
||||||
message = message
|
|
||||||
})
|
|
||||||
count = (count+1)%10
|
|
||||||
if count == 0 then
|
|
||||||
logger:save()
|
|
||||||
end
|
|
||||||
end
|
|
||||||
|
|
||||||
local levels = {"debug", "info", "warn", "error", "fatal"}
|
|
||||||
|
|
||||||
for _, level in ipairs(levels) do
|
|
||||||
flatdb.hack[level] = function(logger, msg)
|
|
||||||
common_log(logger, level, msg)
|
|
||||||
end
|
|
||||||
end
|
|
||||||
|
|
||||||
flatdb.hack.find = function(logger, level, date)
|
|
||||||
if logger[date or os.date("%Y-%m-%d")] then
|
|
||||||
return logger[date or os.date("%Y-%m-%d")][level]
|
|
||||||
end
|
|
||||||
end
|
|
||||||
|
|
||||||
for i = 1, 10 do
|
|
||||||
logger:debug("This is a debug message.")
|
|
||||||
logger:info("This is an info message.")
|
|
||||||
logger:warn("This is a warn message.")
|
|
||||||
logger:error("This is an error message.")
|
|
||||||
logger:fatal("This is a fatal message.")
|
|
||||||
end
|
|
||||||
|
|
||||||
local pp = require("pp") -- https://github.com/luapower/pp
|
|
||||||
pp(logger:find("error"))
|
|
||||||
|
|
||||||
```
|
|
||||||
|
|
||||||
API
|
|
||||||
==========
|
|
||||||
|
|
||||||
- **函数**
|
|
||||||
|
|
||||||
- **flatdb(dir) --> db**
|
|
||||||
|
|
||||||
将一个目录dir映射成数据库对象。若目录不存在，返回nil。否则，返回一个数据库对象db（Lua表）。
|
|
||||||
|
|
||||||
- **db:save([page])**
|
|
||||||
|
|
||||||
将指定的页（Page）保存在文件中，若不指定则保存数据库对象中所有的页。参数*page*是指页的名称。
|
|
||||||
|
|
||||||
- **表**
|
|
||||||
|
|
||||||
- **flatdb**
|
|
||||||
|
|
||||||
当数据库载入后，flatdb表的键值对有以下关系：
|
|
||||||
|
|
||||||
*flatdb[dir] --> db*
|
|
||||||
|
|
||||||
*flatdb[db] --> dir*
|
|
||||||
|
|
||||||
- **flatdb.hack**
|
|
||||||
|
|
||||||
hack表包含了数据库对象的所有方法。默认情况下，目前数据库对象只有一个db:save([page])方法。
|
|
||||||
该表一般用于扩展数据库对象方法。
|
|
||||||
|
|
||||||
依赖项
|
|
||||||
=======
|
|
||||||
|
|
||||||
- [lua-MessagePack](https://github.com/fperrad/lua-MessagePack)
|
|
||||||
|
|
||||||
许可证
|
|
||||||
=======
|
|
||||||
|
|
||||||
FlatDB是在MIT许可证下发布的。
|
|
||||||
159
README.md
159
README.md
@ -1,159 +1,4 @@
|
|||||||
FlatDB
|
ColdDB
|
||||||
===========
|
===========
|
||||||
|
|
||||||
FlatDB is a lua library that implements a serverless, zero-configuration, NoSQL database engine.<br>
|
ColdDB is a lua library that implements a serverless, zero-configuration, NoSQL database engine.
|
||||||
It provides a key-value storage system using plain Lua tables.
|
|
||||||
|
|
||||||
When To Use FlatDB
|
|
||||||
===========
|
|
||||||
|
|
||||||
When you want to use SQLite to store data, just take a glance at FlatDB.<br>
|
|
||||||
When Lua acts in your program as the major language or the embedded scripting language, just try using FlatDB.
|
|
||||||
|
|
||||||
Concept
|
|
||||||
==========
|
|
||||||
|
|
||||||
| FlatDB | Disk | Lua |
|
|
||||||
|:--------------:|:-------------:|:--------------:|
|
|
||||||
| Database | Directory | Table |
|
|
||||||
| Page | File | Table |
|
|
||||||
| Key-value pair | File content | Key-value pair |
|
|
||||||
|
|
||||||
Keys and values can be all Lua types except coroutines, userdata, cdata and C functions.
|
|
||||||
|
|
||||||
Usage
|
|
||||||
==========
|
|
||||||
|
|
||||||
Copy *flatdb.lua* file to your project or where your lua libraries stored.<br>
|
|
||||||
Then write this in any Lua file where you want to use it:
|
|
||||||
```lua
|
|
||||||
local flatdb = require 'flatdb'
|
|
||||||
```
|
|
||||||
|
|
||||||
1. Bind a directory as a database
|
|
||||||
|
|
||||||
```lua
|
|
||||||
local db = flatdb('./db')
|
|
||||||
```
|
|
||||||
|
|
||||||
2. Open or create a page
|
|
||||||
|
|
||||||
```lua
|
|
||||||
if not db.page then
|
|
||||||
db.page = {}
|
|
||||||
end
|
|
||||||
```
|
|
||||||
|
|
||||||
3. Store key-value items
|
|
||||||
|
|
||||||
```lua
|
|
||||||
db.page.key = 'value'
|
|
||||||
-- equivalent to db.page['key'] = 'value'
|
|
||||||
```
|
|
||||||
|
|
||||||
4. Retrieve items
|
|
||||||
|
|
||||||
```lua
|
|
||||||
print(db.page.key) -- prints 'value'
|
|
||||||
```
|
|
||||||
|
|
||||||
5. Save to file
|
|
||||||
|
|
||||||
```lua
|
|
||||||
db:save()
|
|
||||||
-- 'page' will be saved to './db/page'
|
|
||||||
```
|
|
||||||
|
|
||||||
More usage can be found in the [Ledis](https://github.com/uleelx/ledis)(an alternative of Redis server using FlatDB).
|
|
||||||
|
|
||||||
Quick Look
|
|
||||||
==========
|
|
||||||
|
|
||||||
```lua
|
|
||||||
-- This is an logging system example using FlatDB
|
|
||||||
|
|
||||||
local flatdb = require("flatdb")
|
|
||||||
|
|
||||||
local logger = flatdb("./log")
|
|
||||||
|
|
||||||
local count = 0
|
|
||||||
|
|
||||||
local function common_log(logger, level, message)
|
|
||||||
local today = os.date("%Y-%m-%d")
|
|
||||||
if logger[today] == nil then logger[today] = {} end
|
|
||||||
if logger[today][level] == nil then logger[today][level] = {} end
|
|
||||||
table.insert(logger[today][level], {
|
|
||||||
timestamp = os.time(),
|
|
||||||
level = level,
|
|
||||||
message = message
|
|
||||||
})
|
|
||||||
count = (count+1)%10
|
|
||||||
if count == 0 then
|
|
||||||
logger:save()
|
|
||||||
end
|
|
||||||
end
|
|
||||||
|
|
||||||
local levels = {"debug", "info", "warn", "error", "fatal"}
|
|
||||||
|
|
||||||
for _, level in ipairs(levels) do
|
|
||||||
flatdb.hack[level] = function(logger, msg)
|
|
||||||
common_log(logger, level, msg)
|
|
||||||
end
|
|
||||||
end
|
|
||||||
|
|
||||||
flatdb.hack.find = function(logger, level, date)
|
|
||||||
if logger[date or os.date("%Y-%m-%d")] then
|
|
||||||
return logger[date or os.date("%Y-%m-%d")][level]
|
|
||||||
end
|
|
||||||
end
|
|
||||||
|
|
||||||
for i = 1, 10 do
|
|
||||||
logger:debug("This is a debug message.")
|
|
||||||
logger:info("This is an info message.")
|
|
||||||
logger:warn("This is a warn message.")
|
|
||||||
logger:error("This is an error message.")
|
|
||||||
logger:fatal("This is a fatal message.")
|
|
||||||
end
|
|
||||||
|
|
||||||
local pp = require("pp") -- https://github.com/luapower/pp
|
|
||||||
pp(logger:find("error"))
|
|
||||||
|
|
||||||
```
|
|
||||||
|
|
||||||
API
|
|
||||||
==========
|
|
||||||
|
|
||||||
- **Functions**
|
|
||||||
|
|
||||||
- **flatdb(dir) --> db**
|
|
||||||
|
|
||||||
Bind a directory as a database, returns nil if 'dir' doesn't exists. Otherwise, it returns a 'db' obeject.
|
|
||||||
|
|
||||||
- **db:save([page])**
|
|
||||||
|
|
||||||
Save all pages or the given page(if specified) contained in db to file. The 'page' argument is a string, the page's name.
|
|
||||||
|
|
||||||
- **Tables**
|
|
||||||
|
|
||||||
- **flatdb**
|
|
||||||
|
|
||||||
When a db is loaded, there is two relations below:
|
|
||||||
|
|
||||||
*flatdb[dir] --> db*
|
|
||||||
|
|
||||||
*flatdb[db] --> dir*
|
|
||||||
|
|
||||||
- **flatdb.hack**
|
|
||||||
|
|
||||||
The 'hack' table contains db's methods. There is only one method 'save(db, page)' in it by default.
|
|
||||||
It is usually used to extend db methods.
|
|
||||||
|
|
||||||
Dependencies
|
|
||||||
=======
|
|
||||||
|
|
||||||
- [lua-MessagePack](https://github.com/fperrad/lua-MessagePack)
|
|
||||||
|
|
||||||
License
|
|
||||||
=======
|
|
||||||
|
|
||||||
FlatDB is distributed under the MIT license.
|
|
||||||
629
colddb.lua
Normal file
629
colddb.lua
Normal file
@ -0,0 +1,629 @@
|
|||||||
|
colddb = {}
|
||||||
|
|
||||||
|
local ie = ...
|
||||||
|
|
||||||
|
local function createDir(directory)
|
||||||
|
return minetest.mkdir(directory)
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.file_Exists(db,name,tag_name)
|
||||||
|
local t = ""
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local f = io.open(string.format("%s%s%s.cold",db.directory,t,name),"r")
|
||||||
|
if f ~= nil then
|
||||||
|
io.close(f)
|
||||||
|
return true
|
||||||
|
else
|
||||||
|
return false
|
||||||
|
end
|
||||||
|
return false
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.get_db(directory)
|
||||||
|
local directory = string.format("%s/%s",minetest.get_worldpath(),directory)
|
||||||
|
if not createDir(directory) then
|
||||||
|
error(string.format("%s is not a directory.",directory))
|
||||||
|
end
|
||||||
|
db = {
|
||||||
|
global_tag = "",
|
||||||
|
directory = directory,
|
||||||
|
tags = {},
|
||||||
|
mem_pool = {},
|
||||||
|
indexes_pool = {},
|
||||||
|
iterate_queue = {},
|
||||||
|
indexes = false,
|
||||||
|
add_to_mem_pool = true,
|
||||||
|
}
|
||||||
|
return db
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.add_global_tag(db,tag)
|
||||||
|
local t = ""
|
||||||
|
if type(tag) == "table" then
|
||||||
|
for index in pairs(tag) do
|
||||||
|
t = string.format("%s%s/",t,index)
|
||||||
|
end
|
||||||
|
else
|
||||||
|
t = string.format("%s/",tag)
|
||||||
|
end
|
||||||
|
db.global_tag = string.format("%s%s",db.global_tag,t)
|
||||||
|
db.directory = string.format("%s/%s",db.directory,t)
|
||||||
|
if not createDir(db.directory) then
|
||||||
|
error(string.format("%s is not a directory.",db.directory))
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.add_tag(db,name,tag)
|
||||||
|
local t = ""
|
||||||
|
if not db.tags[name] then
|
||||||
|
db.tags[name] = ""
|
||||||
|
end
|
||||||
|
if type(tag) == "table" then
|
||||||
|
for _index in pairs(tag) do
|
||||||
|
t = string.format("%s%s/",t,_index)
|
||||||
|
end
|
||||||
|
else
|
||||||
|
t = string.format("%s/",tag)
|
||||||
|
end
|
||||||
|
local test_path = string.format("%s%s%s",db.directory,db.tags[name],t)
|
||||||
|
if not createDir(test_path) then
|
||||||
|
error(string.format("%s is not a directory.",test_path))
|
||||||
|
end
|
||||||
|
db.tags[name] = string.format("%s%s",db.tags[name],t)
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.get_tag(db,name)
|
||||||
|
if not name then
|
||||||
|
return ""
|
||||||
|
end
|
||||||
|
local tag = db.tags[name]
|
||||||
|
if tag then
|
||||||
|
return tag
|
||||||
|
end
|
||||||
|
return ""
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.remove_tag(db,name)
|
||||||
|
if db.tags[name] then
|
||||||
|
local delete_path = string.format("%s%s",db.directory,db.tags[name])
|
||||||
|
local wc = delete_path:len()
|
||||||
|
delete_path = delete_path:sub(0,wc-1)
|
||||||
|
db.tags[name] = nil
|
||||||
|
local err,msg = os.remove(delete_path)
|
||||||
|
if err == nil and ie then
|
||||||
|
assert(ie, "Please add colddb to secure.trusted_mods in the settings")
|
||||||
|
local cmd = string.format("rmdir %s",delete_path)
|
||||||
|
ie.os.execute(cmd)
|
||||||
|
cmd = nil
|
||||||
|
end
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.delete_file(db,name,tag_name)
|
||||||
|
local t = ""
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local text = string.format("%s%s%s.cold",db.directory,t,name)
|
||||||
|
|
||||||
|
local err,msg = os.remove(text)
|
||||||
|
if err == nil then
|
||||||
|
print(string.format("error removing db data %s error message: %s",text,msg))
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.load_table(db,name,tag_name)
|
||||||
|
local t = ""
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local f = io.open(string.format("%s%s%s.cold",db.directory,t,name), "r")
|
||||||
|
if f then
|
||||||
|
local data = minetest.deserialize(f:read("*a"))
|
||||||
|
f:close()
|
||||||
|
return data
|
||||||
|
end
|
||||||
|
return nil
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.save_table(db,name, _table,tag_name)
|
||||||
|
local t = ""
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
return minetest.safe_file_write(string.format("%s%s%s.cold",db.directory,t,name), minetest.serialize(_table))
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.save_key(db,name,tag_name)
|
||||||
|
local t = ""
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
return minetest.safe_file_write(string.format("%s%s%s.cold",db.directory,t,name), "")
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.load_key(db,name,tag_name)
|
||||||
|
local t = ""
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local f = io.open(string.format("%s%s%s.cold",db.directory,t,name), "r")
|
||||||
|
if f then
|
||||||
|
f:close()
|
||||||
|
return true
|
||||||
|
end
|
||||||
|
return false
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.delete_index_table(db,tag_name)
|
||||||
|
local t = ""
|
||||||
|
local name = "æIndex_table"
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local p = string.format("%s%sæIndex_table.cold",db.directory,t)
|
||||||
|
if colddb.file_Exists(db,name,tag_name) then
|
||||||
|
local err,msg = os.remove(p)
|
||||||
|
if err == nil then
|
||||||
|
print(string.format("error removing db data %s error message: %s",p,msg))
|
||||||
|
end
|
||||||
|
return true
|
||||||
|
end
|
||||||
|
return false
|
||||||
|
end
|
||||||
|
|
||||||
|
local function delete_lines_func_begin(args)
|
||||||
|
local f = io.open(args.copyfile, "w")
|
||||||
|
local db = args.db
|
||||||
|
local cs = args.cs
|
||||||
|
if f then
|
||||||
|
args.file = f
|
||||||
|
args.removedlist = {}
|
||||||
|
return args
|
||||||
|
end
|
||||||
|
return false
|
||||||
|
end
|
||||||
|
|
||||||
|
local function delete_lines_func_i(line,i,args)
|
||||||
|
local f = args.file
|
||||||
|
local db = args.db
|
||||||
|
local cs = args.cs
|
||||||
|
local om = db.indexes_pool[args.cs]
|
||||||
|
if om and not om.deleted_items[line] then
|
||||||
|
f:write(string.format("\n%s",line))
|
||||||
|
else
|
||||||
|
args.count = args.count - 1
|
||||||
|
args.removedlist[line] = true
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
local function delete_lines_func_end(args)
|
||||||
|
local db = args.db
|
||||||
|
local cs = args.cs
|
||||||
|
if db.indexes_pool[cs] or db.indexes_pool[cs].file then
|
||||||
|
db.indexes_pool[cs].file:close()
|
||||||
|
db.indexes_pool[cs].file = nil
|
||||||
|
args.file:seek("set")
|
||||||
|
args.file:write(string.format("%i",args.count))
|
||||||
|
args.file:close()
|
||||||
|
os.remove(args.oldfile)
|
||||||
|
os.rename(args.copyfile, args.oldfile)
|
||||||
|
for i,l in pairs(args.removedlist) do
|
||||||
|
db.indexes_pool[cs].deleted_items[i] = nil
|
||||||
|
end
|
||||||
|
db.indexes_pool[cs].deleting = false
|
||||||
|
end
|
||||||
|
args = nil
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.delete_lines(db,_lines,tag_name)
|
||||||
|
local t = ""
|
||||||
|
local name = "æIndex_table"
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local cs = string.format("%s%s",t,name)
|
||||||
|
local f = db.indexes_pool[cs]
|
||||||
|
local k = type(_lines)
|
||||||
|
if k == "string" then
|
||||||
|
f.deleted_items[_lines] = true
|
||||||
|
else
|
||||||
|
for i,l in pairs(_lines) do
|
||||||
|
f.deleted_items[i] = true
|
||||||
|
end
|
||||||
|
end
|
||||||
|
if not db.indexes_pool[cs].deleting then
|
||||||
|
db.indexes_pool[cs].deleting = false
|
||||||
|
end
|
||||||
|
if f and f.file and not db.indexes_pool[cs].deleting then
|
||||||
|
db.indexes_pool[cs].deleting = true
|
||||||
|
if db.indexes_pool[cs].needs_flushing == true then
|
||||||
|
f.file:flush()
|
||||||
|
db.indexes_pool[cs].needs_flushing = false
|
||||||
|
end
|
||||||
|
local oldfile = string.format("%s%sæIndex_table.cold",db.directory,t)
|
||||||
|
local copyfile = string.format("%s%sæIndex_table.cold.replacer",db.directory,t)
|
||||||
|
local args = {db=db,cs=cs,oldfile=oldfile,copyfile=copyfile,do_not_skip_removed_items=true}
|
||||||
|
db.indexes_pool[cs] = f
|
||||||
|
colddb.iterate_index_table(db,delete_lines_func_begin,delete_lines_func_i,delete_lines_func_end,150,args,tag_name)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.create_index_table(db,tag_name)
|
||||||
|
local t = ""
|
||||||
|
local name = "æIndex_table"
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local p = string.format("%s%sæIndex_table.cold",db.directory,t)
|
||||||
|
if not colddb.file_Exists(db,name,tag_name) then
|
||||||
|
local f = io.open(p, "w")
|
||||||
|
if f then
|
||||||
|
f:seek("set")
|
||||||
|
f:write("0")
|
||||||
|
f:close()
|
||||||
|
end
|
||||||
|
end
|
||||||
|
local f = io.open(p, "r+")
|
||||||
|
if f then
|
||||||
|
f:seek("set")
|
||||||
|
f:write("0")
|
||||||
|
db.indexes_pool[string.format("%s%s",t,name)] = {file = f,needs_flushing = false,deleted_items = {},iterating = false,inuse = false}
|
||||||
|
return true
|
||||||
|
end
|
||||||
|
return false
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.open_index_table(db,tag_name)
|
||||||
|
local t = ""
|
||||||
|
local name = "æIndex_table"
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local cs = string.format("%s%s",t,name)
|
||||||
|
local fs = db.indexes_pool[cs]
|
||||||
|
if not fs then
|
||||||
|
local p = string.format("%s%sæIndex_table.cold",db.directory,t)
|
||||||
|
if not colddb.file_Exists(db,name,tag_name) then
|
||||||
|
local f = io.open(p, "w")
|
||||||
|
if f then
|
||||||
|
f:seek("set")
|
||||||
|
f:write("0")
|
||||||
|
f:close()
|
||||||
|
end
|
||||||
|
end
|
||||||
|
local f = io.open(p, "r+")
|
||||||
|
if f then
|
||||||
|
db.indexes_pool[cs] = {file = f,needs_flushing = false,deleted_items = {},iterating = false,inuse = true}
|
||||||
|
return f
|
||||||
|
end
|
||||||
|
return nil
|
||||||
|
else
|
||||||
|
return fs.file
|
||||||
|
end
|
||||||
|
return nil
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.append_index_table(db,key,tag_name)
|
||||||
|
local t = ""
|
||||||
|
local name = "æIndex_table"
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local cs = string.format("%s%s",t,name)
|
||||||
|
local f = db.indexes_pool[cs]
|
||||||
|
local k = type(key)
|
||||||
|
if f and f.file and k == "string" then
|
||||||
|
local fl = f.file
|
||||||
|
if f.needs_flushing == true then
|
||||||
|
fl:flush()
|
||||||
|
end
|
||||||
|
db.indexes_pool[cs].needs_flushing = true
|
||||||
|
db.indexes_pool[cs].inuse = true
|
||||||
|
fl:seek("end")
|
||||||
|
fl:write(string.format("\n%s",key))
|
||||||
|
fl:seek("set")
|
||||||
|
local count = tonumber(fl:read("*l"))
|
||||||
|
count = count + 1
|
||||||
|
fl:seek("set")
|
||||||
|
fl:write(string.format("%i",count))
|
||||||
|
elseif f and f.file then
|
||||||
|
local fl = f.file
|
||||||
|
if f.needs_flushing == true then
|
||||||
|
fl:flush()
|
||||||
|
end
|
||||||
|
db.indexes_pool[cs].needs_flushing = true
|
||||||
|
db.indexes_pool[cs].inuse = true
|
||||||
|
local c = 0
|
||||||
|
for i in pairs(key) do
|
||||||
|
fl:seek("end")
|
||||||
|
fl:write(string.format("\n%s",i))
|
||||||
|
c = c + 1
|
||||||
|
end
|
||||||
|
fl:seek("set")
|
||||||
|
local count = tonumber(fl:read("*l"))
|
||||||
|
count = count + c
|
||||||
|
fl:seek("set")
|
||||||
|
fl:write(string.format("%i",count))
|
||||||
|
else
|
||||||
|
return false
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.get_count(db,tag_name)
|
||||||
|
local t = ""
|
||||||
|
local name = "æIndex_table"
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local cs = string.format("%s%s",t,name)
|
||||||
|
local f = db.indexes_pool[cs]
|
||||||
|
if f and f.file then
|
||||||
|
local fl = f.file
|
||||||
|
if f.needs_flushing == true then
|
||||||
|
fl:flush()
|
||||||
|
f.needs_flushing = true
|
||||||
|
end
|
||||||
|
fl:seek("set")
|
||||||
|
local count = tonumber(fl:read("*l"))
|
||||||
|
db.indexes_pool[cs].inuse = true
|
||||||
|
return count
|
||||||
|
end
|
||||||
|
return nil
|
||||||
|
end
|
||||||
|
|
||||||
|
local function iterate(db,func_on_iterate,end_func,cycles_per_tick,count,cs,args)
|
||||||
|
local f = db.indexes_pool[cs]
|
||||||
|
f.inuse = true
|
||||||
|
local fl = f.file
|
||||||
|
for i=1,cycles_per_tick do
|
||||||
|
if count < 1 then
|
||||||
|
break
|
||||||
|
end
|
||||||
|
local line = fl:read("*l")
|
||||||
|
if args.do_not_skip_removed_items or not db.indexes_pool[cs].deleted_items[line] then
|
||||||
|
func_on_iterate(line,i,args)
|
||||||
|
end
|
||||||
|
count = count - 1
|
||||||
|
end
|
||||||
|
db.indexes_pool[cs] = f
|
||||||
|
if count < 1 then
|
||||||
|
if end_func then
|
||||||
|
end_func(args)
|
||||||
|
end
|
||||||
|
if db.iterate_queue[cs] and db.iterate_queue[cs][1] then
|
||||||
|
local copy = db.iterate_queue[cs][1]
|
||||||
|
if copy.begin_func then
|
||||||
|
local a = copy.begin_func(copy.args)
|
||||||
|
if a and type(a) == "table" then
|
||||||
|
copy.args = a
|
||||||
|
end
|
||||||
|
end
|
||||||
|
minetest.after(0,iterate,copy.db,copy.func_on_iterate,copy.end_func,copy.cycles_per_tick,copy.count,copy.cs,copy.args)
|
||||||
|
table.remove(db.iterate_queue[cs],1)
|
||||||
|
return true
|
||||||
|
else
|
||||||
|
db.iterate_queue[cs] = nil
|
||||||
|
end
|
||||||
|
db.indexes_pool[cs].iterating = false
|
||||||
|
return true
|
||||||
|
end
|
||||||
|
minetest.after(0,iterate,db,func_on_iterate,end_func,cycles_per_tick,count,cs,args)
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.iterate_index_table(db,begin_func,func_on_iterate,end_func,cycles_per_tick,args,tag_name)
|
||||||
|
local t = ""
|
||||||
|
local name = "æIndex_table"
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local cs = string.format("%s%s",t,name)
|
||||||
|
local f = db.indexes_pool[cs]
|
||||||
|
if not f or not f.file then
|
||||||
|
colddb.open_index_table(db,tag_name)
|
||||||
|
f = db.indexes_pool[cs]
|
||||||
|
end
|
||||||
|
if f and f.file and db.indexes_pool[cs].iterating == false then
|
||||||
|
-- set inuse and iterating to true
|
||||||
|
db.indexes_pool[cs].inuse = true
|
||||||
|
db.indexes_pool[cs].iterating = true
|
||||||
|
local fl = f.file
|
||||||
|
if f.needs_flushing == true then
|
||||||
|
fl:flush()
|
||||||
|
f.needs_flushing = true
|
||||||
|
end
|
||||||
|
-- Get count
|
||||||
|
fl:seek("set")
|
||||||
|
local c = tonumber(fl:read("*l"))
|
||||||
|
if c < 1 then
|
||||||
|
-- If theres nothing to index then return
|
||||||
|
return false
|
||||||
|
end
|
||||||
|
if not args then
|
||||||
|
args = {}
|
||||||
|
end
|
||||||
|
args.count = c
|
||||||
|
-- Run the begin function
|
||||||
|
if begin_func then
|
||||||
|
local a = begin_func(args)
|
||||||
|
if a and type(a) == "table" then
|
||||||
|
args = a
|
||||||
|
end
|
||||||
|
end
|
||||||
|
-- Start iterating the index table
|
||||||
|
iterate(db,func_on_iterate,end_func,cycles_per_tick,c,cs,args)
|
||||||
|
elseif f and f.file then
|
||||||
|
-- If its iterating some other function then add this one to the queue list
|
||||||
|
fl:seek("set")
|
||||||
|
local c = tonumber(fl:read("*l"))
|
||||||
|
if c < 1 then
|
||||||
|
-- If theres nothing to index then return
|
||||||
|
return false
|
||||||
|
end
|
||||||
|
if not db.iterate_queue[cs] then
|
||||||
|
db.iterate_queue[cs] = {}
|
||||||
|
end
|
||||||
|
local _table = {db=db,begin_func=begin_func,func_on_iterate=func_on_iterate,end_func=end_func,cycles_per_tick=cycles_per_tick,count=c,cs=cs,tag_name=tag_name,args=args}
|
||||||
|
table.insert(db.iterate_queue[cs],_table)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
local function check_use(db,name,tag_name,d)
|
||||||
|
if not d then
|
||||||
|
d = 0
|
||||||
|
end
|
||||||
|
local delay = 30 + d
|
||||||
|
local t = ""
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local cs = string.format("%s%s",t,name)
|
||||||
|
if not db.mem_pool or not db.mem_pool[cs] then
|
||||||
|
return false
|
||||||
|
end
|
||||||
|
if db.mem_pool[cs].inuse == false then
|
||||||
|
if db.mem_pool[cs].indexes == true then
|
||||||
|
local cs2 = string.format("%s%s",t,"æIndex_table")
|
||||||
|
local fs = db.indexes_pool[cs2]
|
||||||
|
if fs and fs.file then
|
||||||
|
if fs.inuse == true or fs.iterating == true then
|
||||||
|
db.indexes_pool[cs2].inuse = false
|
||||||
|
minetest.after(delay,check_use,name,tag_name,delay,d)
|
||||||
|
return false
|
||||||
|
else
|
||||||
|
fs.file:close()
|
||||||
|
db.indexes_pool[cs2] = nil
|
||||||
|
end
|
||||||
|
end
|
||||||
|
end
|
||||||
|
db.mem_pool[cs] = nil
|
||||||
|
else
|
||||||
|
db.mem_pool[cs].inuse = false
|
||||||
|
minetest.after(delay,check_use,name,tag_name,delay,d)
|
||||||
|
return false
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
local function load_into_mem(db,name,_table,tag_name)
|
||||||
|
if db.add_to_mem_pool then
|
||||||
|
local t = ""
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local cs = string.format("%s%s",t,name)
|
||||||
|
if not db.mem_pool[cs] then
|
||||||
|
db.mem_pool[cs] = {mem = {},inuse = false,check_timer = false,indexes = db.indexes}
|
||||||
|
end
|
||||||
|
db.mem_pool[cs].mem = _table
|
||||||
|
if not db.mem_pool[cs].check_timer then
|
||||||
|
db.mem_pool[cs].inuse = false
|
||||||
|
db.mem_pool[cs].indexes = db.indexes
|
||||||
|
db.mem_pool[cs].check_timer = true
|
||||||
|
check_use(db,name,tag_name)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.set(db,name,_table,tag_name)
|
||||||
|
local t = ""
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
if db.indexes and not colddb.file_Exists(db,name,tag_name) then
|
||||||
|
local cs2 = string.format("%s%s",t,"æIndex_table")
|
||||||
|
local om = db.indexes_pool[cs2]
|
||||||
|
if not colddb.file_Exists(db,"æIndex_table",tag_name) or not (om and om.file) then
|
||||||
|
colddb.open_index_table(db,tag_name)
|
||||||
|
end
|
||||||
|
minetest.after(0,function(db,name,tag_name)colddb.append_index_table(db,name,tag_name)end,db,name,tag_name)
|
||||||
|
end
|
||||||
|
minetest.after(1,function(db,name, _table,tag_name)colddb.save_table(db,name, _table,tag_name)end,db,name, _table,tag_name)
|
||||||
|
local cs = string.format("%s%s",t,name)
|
||||||
|
if db.add_to_mem_pool and not (db.mem_pool or db.mem_pool[cs]) then
|
||||||
|
db.mem_pool[cs] = {mem = {},inuse = false,check_timer = false,indexes = db.indexes}
|
||||||
|
load_into_mem(db,name,_table,tag_name)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.set_key(db,name,tag_name)
|
||||||
|
local t = ""
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
if db.indexes and not colddb.file_Exists(db,name,tag_name) then
|
||||||
|
local cs2 = string.format("%s%s",t,"æIndex_table")
|
||||||
|
local om = db.indexes_pool[cs2]
|
||||||
|
if not colddb.file_Exists(db,"æIndex_table",tag_name) or not (om and om.file) then
|
||||||
|
colddb.open_index_table(db,tag_name)
|
||||||
|
end
|
||||||
|
minetest.after(0,function(db,name,tag_name)colddb.append_index_table(db,name,tag_name)end,db,name,tag_name)
|
||||||
|
end
|
||||||
|
minetest.after(1,function(db,name, tag_name)colddb.save_key(db,name, tag_name)end,db,name, tag_name)
|
||||||
|
local cs = string.format("%s%s",t,name)
|
||||||
|
if db.add_to_mem_pool and not (db.mem_pool or db.mem_pool[cs]) then
|
||||||
|
db.mem_pool[cs] = {mem = {},inuse = false,check_timer = false,indexes = db.indexes}
|
||||||
|
load_into_mem(db,name,_table,tag_name)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.get(db,name,tag_name)
|
||||||
|
local t = ""
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local cs = string.format("%s%s",t,name)
|
||||||
|
local pm = db.mem_pool[cs]
|
||||||
|
if pm then
|
||||||
|
db.mem_pool[cs].inuse = true
|
||||||
|
return pm.mem
|
||||||
|
else
|
||||||
|
local _table = colddb.load_table(db,name,tag_name)
|
||||||
|
if _table then
|
||||||
|
load_into_mem(db,name,_table,tag_name)
|
||||||
|
return _table
|
||||||
|
end
|
||||||
|
end
|
||||||
|
return nil
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.get_key(db,name,tag_name)
|
||||||
|
local t = ""
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local cs = string.format("%s%s",t,name)
|
||||||
|
local pm = db.mem_pool[cs]
|
||||||
|
if pm then
|
||||||
|
db.mem_pool[cs].inuse = true
|
||||||
|
return true
|
||||||
|
else
|
||||||
|
local bool = colddb.load_key(db,name,tag_name)
|
||||||
|
if bool then
|
||||||
|
load_into_mem(db,name,bool,tag_name)
|
||||||
|
return bool
|
||||||
|
end
|
||||||
|
end
|
||||||
|
return nil
|
||||||
|
end
|
||||||
|
|
||||||
|
function colddb.remove(db,name,tag_name)
|
||||||
|
local t = ""
|
||||||
|
if tag_name then
|
||||||
|
t = colddb.get_tag(db,tag_name)
|
||||||
|
end
|
||||||
|
local cs = string.format("%s%s",t,name)
|
||||||
|
if db.mem_pool and db.mem_pool[cs] then
|
||||||
|
db.mem_pool[cs] = nil
|
||||||
|
end
|
||||||
|
if db.indexes and colddb.file_Exists(db,"æIndex_table",tag_name) then
|
||||||
|
local cs2 = string.format("%s%s",t,"æIndex_table")
|
||||||
|
local om = db.indexes_pool[cs2]
|
||||||
|
if not om and not om.file then
|
||||||
|
colddb.open_index_table(db,tag_name)
|
||||||
|
end
|
||||||
|
colddb.delete_lines(db,name,tag_name)
|
||||||
|
end
|
||||||
|
minetest.after(0,function(db,name,tag_name)colddb.delete_file(db,name,tag_name)end,db,name,tag_name)
|
||||||
|
end
|
||||||
4
db/.gitignore
vendored
4
db/.gitignore
vendored
@ -1,4 +0,0 @@
|
|||||||
# Ignore everything in this directory
|
|
||||||
*
|
|
||||||
# Except this file
|
|
||||||
!.gitignore
|
|
||||||
0
depends.txt
Normal file
0
depends.txt
Normal file
1
description.txt
Normal file
1
description.txt
Normal file
@ -0,0 +1 @@
|
|||||||
|
pure lua No-sql database mod.
|
||||||
86
flatdb.lua
86
flatdb.lua
@ -1,86 +0,0 @@
|
|||||||
local mp = require("MessagePack")
|
|
||||||
|
|
||||||
local function isFile(path)
|
|
||||||
local f = io.open(path, "r")
|
|
||||||
if f then
|
|
||||||
f:close()
|
|
||||||
return true
|
|
||||||
end
|
|
||||||
return false
|
|
||||||
end
|
|
||||||
|
|
||||||
local function isDir(path)
|
|
||||||
path = string.gsub(path.."/", "//", "/")
|
|
||||||
local ok, err, code = os.rename(path, path)
|
|
||||||
if ok or code == 13 then
|
|
||||||
return true
|
|
||||||
end
|
|
||||||
return false
|
|
||||||
end
|
|
||||||
|
|
||||||
local function load_page(path)
|
|
||||||
local ret
|
|
||||||
local f = io.open(path, "rb")
|
|
||||||
if f then
|
|
||||||
ret = mp.unpack(f:read("*a"))
|
|
||||||
f:close()
|
|
||||||
end
|
|
||||||
return ret
|
|
||||||
end
|
|
||||||
|
|
||||||
local function store_page(path, page)
|
|
||||||
if type(page) == "table" then
|
|
||||||
local f = io.open(path, "wb")
|
|
||||||
if f then
|
|
||||||
f:write(mp.pack(page))
|
|
||||||
f:close()
|
|
||||||
return true
|
|
||||||
end
|
|
||||||
end
|
|
||||||
return false
|
|
||||||
end
|
|
||||||
|
|
||||||
local pool = {}
|
|
||||||
|
|
||||||
local db_funcs = {
|
|
||||||
save = function(db, p)
|
|
||||||
if p then
|
|
||||||
if type(p) == "string" and type(db[p]) == "table" then
|
|
||||||
return store_page(pool[db].."/"..p, db[p])
|
|
||||||
else
|
|
||||||
return false
|
|
||||||
end
|
|
||||||
end
|
|
||||||
for p, page in pairs(db) do
|
|
||||||
if not store_page(pool[db].."/"..p, page) then
|
|
||||||
return false
|
|
||||||
end
|
|
||||||
end
|
|
||||||
return true
|
|
||||||
end
|
|
||||||
}
|
|
||||||
|
|
||||||
local mt = {
|
|
||||||
__index = function(db, k)
|
|
||||||
if db_funcs[k] then return db_funcs[k] end
|
|
||||||
if isFile(pool[db].."/"..k) then
|
|
||||||
db[k] = load_page(pool[db].."/"..k)
|
|
||||||
end
|
|
||||||
return rawget(db, k)
|
|
||||||
end
|
|
||||||
}
|
|
||||||
|
|
||||||
pool.hack = db_funcs
|
|
||||||
|
|
||||||
return setmetatable(pool, {
|
|
||||||
__mode = "kv",
|
|
||||||
__call = function(pool, path)
|
|
||||||
assert(isDir(path), path.." is not a directory.")
|
|
||||||
if pool[path] then return pool[path] end
|
|
||||||
local db = {}
|
|
||||||
setmetatable(db, mt)
|
|
||||||
pool[path] = db
|
|
||||||
pool[db] = path
|
|
||||||
return db
|
|
||||||
end
|
|
||||||
})
|
|
||||||
8
init.lua
Normal file
8
init.lua
Normal file
@ -0,0 +1,8 @@
|
|||||||
|
modpath = minetest.get_modpath("colddb")
|
||||||
|
|
||||||
|
local ie = minetest.request_insecure_environment()
|
||||||
|
if ie then
|
||||||
|
loadfile(modpath .. "/colddb.lua")(ie)
|
||||||
|
else
|
||||||
|
dofile(modpath .. "/colddb.lua")
|
||||||
|
end
|
||||||
Loading…
Reference in New Issue
Block a user