Merge branch 'feature/upstream' into develop

1 files changed, 150 insertions, 0 deletions

diff --git a/backend/genesys/serialize.h b/backend/genesys/serialize.h
new file mode 100644
index 0000000..ed40a4e
--- /dev/null
+++ b/backend/genesys/serialize.h
@@ -0,0 +1,150 @@
+/* sane - Scanner Access Now Easy.
+
+   Copyright (C) 2019 Povilas Kanapickas <povilas@radix.lt>
+
+   This file is part of the SANE package.
+
+   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.
+
+   As a special exception, the authors of SANE give permission for
+   additional uses of the libraries contained in this release of SANE.
+
+   The exception is that, if you link a SANE library with other files
+   to produce an executable, this does not by itself cause the
+   resulting executable to be covered by the GNU General Public
+   License.  Your use of that executable is in no way restricted on
+   account of linking the SANE library code into it.
+
+   This exception does not, however, invalidate any other reasons why
+   the executable file might be covered by the GNU General Public
+   License.
+
+   If you submit changes to SANE to the maintainers to be included in
+   a subsequent release, you agree by submitting the changes that
+   those changes may be distributed with this exception intact.
+
+   If you write modifications of your own for SANE, it is your choice
+   whether to permit this exception to apply to your modifications.
+   If you do not wish that, delete this exception notice.
+*/
+
+#ifndef BACKEND_GENESYS_SERIALIZE_H
+#define BACKEND_GENESYS_SERIALIZE_H
+
+#include "error.h"
+#include <array>
+#include <iostream>
+#include <limits>
+#include <string>
+#include <vector>
+
+namespace genesys {
+
+// it would be best to use something like boost.serialization
+
+inline void serialize_newline(std::ostream& str) { str << '\n'; }
+inline void serialize_newline(std::istream& str) { (void) str; }
+
+inline void serialize(std::ostream& str, bool x) { str << static_cast<unsigned>(x) << " "; }
+inline void serialize(std::istream& str, bool& x) { unsigned v; str >> v; x = v; }
+inline void serialize(std::ostream& str, char x) { str << static_cast<int>(x) << " "; }
+inline void serialize(std::istream& str, char& x) { int v; str >> v; x = v; }
+inline void serialize(std::ostream& str, unsigned char x) { str << static_cast<unsigned>(x) << " "; }
+inline void serialize(std::istream& str, unsigned char& x) { unsigned v; str >> v; x = v; }
+inline void serialize(std::ostream& str, signed char x) { str << static_cast<int>(x) << " "; }
+inline void serialize(std::istream& str, signed char& x) { int v; str >> v; x = v; }
+inline void serialize(std::ostream& str, short x) { str << x << " "; }
+inline void serialize(std::istream& str, short& x) { str >> x; }
+inline void serialize(std::ostream& str, unsigned short x) { str << x << " "; }
+inline void serialize(std::istream& str, unsigned short& x) { str >> x; }
+inline void serialize(std::ostream& str, int x) { str << x << " "; }
+inline void serialize(std::istream& str, int& x) { str >> x; }
+inline void serialize(std::ostream& str, unsigned int x) { str << x << " "; }
+inline void serialize(std::istream& str, unsigned int& x) { str >> x; }
+inline void serialize(std::ostream& str, long x) { str << x << " "; }
+inline void serialize(std::istream& str, long& x) { str >> x; }
+inline void serialize(std::ostream& str, unsigned long x) { str << x << " "; }
+inline void serialize(std::istream& str, unsigned long& x) { str >> x; }
+inline void serialize(std::ostream& str, long long x) { str << x << " "; }
+inline void serialize(std::istream& str, long long& x) { str >> x; }
+inline void serialize(std::ostream& str, unsigned long long x) { str << x << " "; }
+inline void serialize(std::istream& str, unsigned long long& x) { str >> x; }
+inline void serialize(std::ostream& str, float x) { str << x << " "; }
+inline void serialize(std::istream& str, float& x) { str >> x; }
+inline void serialize(std::ostream& str, double x) { str << x << " "; }
+inline void serialize(std::istream& str, double& x) { str >> x; }
+inline void serialize(std::ostream& str, const std::string& x) { str << x << " "; }
+inline void serialize(std::istream& str, std::string& x) { str >> x; }
+
+template<class T>
+void serialize(std::ostream& str, std::vector<T>& x)
+{
+    serialize(str, x.size());
+    serialize_newline(str);
+
+    for (auto& item : x) {
+        serialize(str, item);
+        serialize_newline(str);
+    }
+}
+
+template<class T>
+void serialize(std::istream& str, std::vector<T>& x,
+               size_t max_size = std::numeric_limits<size_t>::max())
+{
+    size_t new_size;
+    serialize(str, new_size);
+
+    if (new_size > max_size) {
+        throw SaneException("Too large std::vector to deserialize");
+    }
+    x.reserve(new_size);
+    for (size_t i = 0; i < new_size; ++i) {
+        T item;
+        serialize(str, item);
+        x.push_back(item);
+    }
+}
+
+template<class T, size_t Size>
+void serialize(std::ostream& str, std::array<T, Size>& x)
+{
+    serialize(str, x.size());
+    serialize_newline(str);
+
+    for (auto& item : x) {
+        serialize(str, item);
+        serialize_newline(str);
+    }
+}
+
+template<class T, size_t Size>
+void serialize(std::istream& str, std::array<T, Size>& x)
+{
+    size_t new_size;
+    serialize(str, new_size);
+
+    if (new_size > Size) {
+        throw SaneException("Incorrect std::array size to deserialize");
+    }
+    for (auto& item : x) {
+        serialize(str, item);
+    }
+}
+
+} // namespace genesys
+
+#endif