aboutsummaryrefslogtreecommitdiff
path: root/src/serialization/binary_archive.h
diff options
context:
space:
mode:
authorAntonio Juarez <antonio.maria.juarez@live.com>2014-03-03 22:07:58 +0000
committerAntonio Juarez <antonio.maria.juarez@live.com>2014-03-03 22:07:58 +0000
commit296ae46ed8f8f6e5f986f978febad302e3df231a (patch)
tree1629164454a239308f33c9e12afb22e7f3cd8eeb /src/serialization/binary_archive.h
parentchanged name (diff)
downloadmonero-296ae46ed8f8f6e5f986f978febad302e3df231a.tar.xz
moved all stuff to github
Diffstat (limited to 'src/serialization/binary_archive.h')
-rw-r--r--src/serialization/binary_archive.h169
1 files changed, 169 insertions, 0 deletions
diff --git a/src/serialization/binary_archive.h b/src/serialization/binary_archive.h
new file mode 100644
index 000000000..f28e45c0c
--- /dev/null
+++ b/src/serialization/binary_archive.h
@@ -0,0 +1,169 @@
+// Copyright (c) 2012-2013 The Cryptonote developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+/* binary_archive.h
+ *
+ * Portable (low-endian) binary archive */
+#pragma once
+
+#include <cassert>
+#include <iostream>
+#include <iterator>
+#include <boost/type_traits/make_unsigned.hpp>
+
+#include "common/varint.h"
+#include "warnings.h"
+
+PUSH_WARNINGS
+DISABLE_VS_WARNINGS(4244)
+
+//TODO: fix size_t warning in x32 platform
+
+template <class Stream, bool IsSaving>
+struct binary_archive_base
+{
+ typedef Stream stream_type;
+ typedef binary_archive_base<Stream, IsSaving> base_type;
+ typedef boost::mpl::bool_<IsSaving> is_saving;
+
+ typedef uint8_t variant_tag_type;
+
+ explicit binary_archive_base(stream_type &s) : stream_(s) { }
+
+ void tag(const char *) { }
+ void begin_object() { }
+ void end_object() { }
+ void begin_variant() { }
+ void end_variant() { }
+ stream_type &stream() { return stream_; }
+protected:
+ stream_type &stream_;
+};
+
+template <bool W>
+struct binary_archive;
+
+template <>
+struct binary_archive<false> : public binary_archive_base<std::istream, false>
+{
+ explicit binary_archive(stream_type &s) : base_type(s) {
+ stream_type::streampos pos = stream_.tellg();
+ stream_.seekg(0, std::ios_base::end);
+ eof_pos_ = stream_.tellg();
+ stream_.seekg(pos);
+ }
+
+ template <class T>
+ void serialize_int(T &v)
+ {
+ serialize_uint(*(typename boost::make_unsigned<T>::type *)&v);
+ }
+
+ template <class T>
+ void serialize_uint(T &v, size_t width = sizeof(T))
+ {
+ T ret = 0;
+ unsigned shift = 0;
+ for (size_t i = 0; i < width; i++) {
+ //std::cerr << "tell: " << stream_.tellg() << " value: " << ret << std::endl;
+ char c;
+ stream_.get(c);
+ T b = (unsigned char)c;
+ ret += (b << shift);
+ shift += 8;
+ }
+ v = ret;
+ }
+ void serialize_blob(void *buf, size_t len, const char *delimiter="") { stream_.read((char *)buf, len); }
+
+ template <class T>
+ void serialize_varint(T &v)
+ {
+ serialize_uvarint(*(typename boost::make_unsigned<T>::type *)(&v));
+ }
+
+ template <class T>
+ void serialize_uvarint(T &v)
+ {
+ typedef std::istreambuf_iterator<char> it;
+ tools::read_varint(it(stream_), it(), v); // XXX handle failure
+ }
+ void begin_array(size_t &s)
+ {
+ serialize_varint(s);
+ }
+ void begin_array() { }
+
+ void delimit_array() { }
+ void end_array() { }
+
+ void begin_string(const char *delimiter="\"") { }
+ void end_string(const char *delimiter="\"") { }
+
+ void read_variant_tag(variant_tag_type &t) {
+ serialize_int(t);
+ }
+
+ size_t remaining_bytes() {
+ if (!stream_.good())
+ return 0;
+ //std::cerr << "tell: " << stream_.tellg() << std::endl;
+ assert(stream_.tellg() <= eof_pos_);
+ return eof_pos_ - stream_.tellg();
+ }
+protected:
+ std::streamoff eof_pos_;
+};
+
+template <>
+struct binary_archive<true> : public binary_archive_base<std::ostream, true>
+{
+ explicit binary_archive(stream_type &s) : base_type(s) { }
+
+ template <class T>
+ void serialize_int(T v)
+ {
+ serialize_uint(static_cast<typename boost::make_unsigned<T>::type>(v));
+ }
+ template <class T>
+ void serialize_uint(T v)
+ {
+ for (size_t i = 0; i < sizeof(T); i++) {
+ stream_.put((char)(v & 0xff));
+ if (1 < sizeof(T)) {
+ v >>= 8;
+ }
+ }
+ }
+ void serialize_blob(void *buf, size_t len, const char *delimiter="") { stream_.write((char *)buf, len); }
+
+ template <class T>
+ void serialize_varint(T &v)
+ {
+ serialize_uvarint(*(typename boost::make_unsigned<T>::type *)(&v));
+ }
+
+ template <class T>
+ void serialize_uvarint(T &v)
+ {
+ typedef std::ostreambuf_iterator<char> it;
+ tools::write_varint(it(stream_), v);
+ }
+ void begin_array(size_t s)
+ {
+ serialize_varint(s);
+ }
+ void begin_array() { }
+ void delimit_array() { }
+ void end_array() { }
+
+ void begin_string(const char *delimiter="\"") { }
+ void end_string(const char *delimiter="\"") { }
+
+ void write_variant_tag(variant_tag_type t) {
+ serialize_int(t);
+ }
+};
+
+POP_WARNINGS