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cpp: Improve README

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* lang/cpp/README: Add more content, move license to bottom.
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Andre Heinecke 2016-09-19 14:09:19 +02:00
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GpgMEpp - C++ bindings/wrapper for gpgme GpgMEpp - C++ bindings/wrapper for GPGME
---------------------------------------- ----------------------------------------
Based on KF5gpgmepp Based on KF5gpgmepp
GPGMEpp is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
GPGMEpp 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with GPGME++; see the file COPYING.LIB. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
Overview Overview
-------- --------
@ -41,20 +26,76 @@ The design principles of this library are as follows:
itself, anyway (see e.g. Data). A notable exception of the itself, anyway (see e.g. Data). A notable exception of the
no-virtuals rule is the use of abstract classes to cover no-virtuals rule is the use of abstract classes to cover
C-callbacks. C-callbacks.
6. Use of STL containers for improved memory management and
dealing with lists.
7. Complete abstraction of the C-API so "gpgme.h" should not
be needed in your project using GpgME++.
8. Abstraction of GnuPG's edit-key interface by prepared
Editinteractor classes.
GpgMEpp was originally developed as part of the KDEPIM community GpgMEpp was originally developed as part of the KDEPIM community.
in KDE 4 it was part of kdepimlibs/gpgme++ for KF5 Gpgmepp was
renamed to KF5GpgMEpp and moved into it's own repository. Usage
-----
The usage pattern of GpgMEpp closely follows GPGMEs core usage
pattern so the documentation for GPGME itself provides a good
way to start.
The context structure in GPGME is mapped to a Context object in
GpgMEpp. Additional convienience code provides Data objects and
a Dataprovider interface that can be used to implement GPGME's
data with any subclass by implementing the right callbacks.
EditInteractor subclasses provide ready to use classes for
common --edit-key tasks. You can implement your own editinteractor
classes by implementing the EditInteractor interface and using
your subclass as an interactor in the edit function.
Example to set the ownertrust of a key:
/* Create an edit interactor */
EditInteractor *ei = new GpgSetOwnerTrustEditInteractor(Key::Ultimate);
/* Obtain a Context */
Context *ctx = Context::createForProtocol(Protocol::OpenPGP);
/* Create an in memory data object */
Data data;
/* Start the edit on some key previously obtained. */
Error e = ctx->edit(key, std::unique_ptr<EditInteractor>(ei), data);
/* Errors provide boolean comparision */
if (!e)
...
/* Delete the context */
delete ctx;
Examples / Tests
----------------
GpgMEpp is tested through the Qt API. You can refer to the
tests in qt/tests for examples of usage or refer to
the actual QGpgME*Job.cpp implementations which rely
on GpgMEpp and should cover most use cases.
Hacking Hacking
------- -------
GpgMEpp follows KDE Coding styles. See: GpgMEpp follows KDE Coding styles. See:
https://techbase.kde.org/Policies/Frameworks_Coding_Style https://techbase.kde.org/Policies/Frameworks_Coding_Style
for more info. for more info.
License License
------- -------
GPGMEpp is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is licensed under the GNU Library General Public GPGMEpp is distributed in the hope that it will be useful,
License (LGPL), just as gpgme is. We feel that using a different but WITHOUT ANY WARRANTY; without even the implied warranty of
license than the one gpgme itself uses doesn't make sense. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with GPGME++; see the file COPYING.LIB. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.