sync with upstream

1 files changed, 461 insertions, 0 deletions

diff --git a/xbmc/utils/Archive.cpp b/xbmc/utils/Archive.cpp
new file mode 100644
index 0000000..1b8392b
--- /dev/null
+++ b/xbmc/utils/Archive.cpp
@@ -0,0 +1,461 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "Archive.h"
+
+#include "IArchivable.h"
+#include "filesystem/File.h"
+#include "utils/Variant.h"
+#include "utils/log.h"
+
+#include <algorithm>
+#include <cstdint>
+#include <cstring>
+#include <stdexcept>
+
+#ifdef __GNUC__
+#pragma GCC diagnostic ignored "-Wlong-long"
+#endif
+
+using namespace XFILE;
+
+//arbitrarily chosen, should be plenty big enough for our strings
+//without causing random bad things happening
+//not very bad, just tiny bad
+#define MAX_STRING_SIZE 100*1024*1024
+
+CArchive::CArchive(CFile* pFile, int mode)
+{
+  m_pFile = pFile;
+  m_iMode = mode;
+
+  m_pBuffer = std::unique_ptr<uint8_t[]>(new uint8_t[CARCHIVE_BUFFER_MAX]);
+  memset(m_pBuffer.get(), 0, CARCHIVE_BUFFER_MAX);
+  if (mode == load)
+  {
+    m_BufferPos = m_pBuffer.get() + CARCHIVE_BUFFER_MAX;
+    m_BufferRemain = 0;
+  }
+  else
+  {
+    m_BufferPos = m_pBuffer.get();
+    m_BufferRemain = CARCHIVE_BUFFER_MAX;
+  }
+}
+
+CArchive::~CArchive()
+{
+  FlushBuffer();
+}
+
+void CArchive::Close()
+{
+  FlushBuffer();
+}
+
+bool CArchive::IsLoading() const
+{
+  return (m_iMode == load);
+}
+
+bool CArchive::IsStoring() const
+{
+  return (m_iMode == store);
+}
+
+CArchive& CArchive::operator<<(float f)
+{
+  return streamout(&f, sizeof(f));
+}
+
+CArchive& CArchive::operator<<(double d)
+{
+  return streamout(&d, sizeof(d));
+}
+
+CArchive& CArchive::operator<<(short int s)
+{
+  return streamout(&s, sizeof(s));
+}
+
+CArchive& CArchive::operator<<(unsigned short int us)
+{
+  return streamout(&us, sizeof(us));
+}
+
+CArchive& CArchive::operator<<(int i)
+{
+  return streamout(&i, sizeof(i));
+}
+
+CArchive& CArchive::operator<<(unsigned int ui)
+{
+  return streamout(&ui, sizeof(ui));
+}
+
+CArchive& CArchive::operator<<(long int l)
+{
+  return streamout(&l, sizeof(l));
+}
+
+CArchive& CArchive::operator<<(unsigned long int ul)
+{
+  return streamout(&ul, sizeof(ul));
+}
+
+CArchive& CArchive::operator<<(long long int ll)
+{
+  return streamout(&ll, sizeof(ll));
+}
+
+CArchive& CArchive::operator<<(unsigned long long int ull)
+{
+  return streamout(&ull, sizeof(ull));
+}
+
+CArchive& CArchive::operator<<(bool b)
+{
+  return streamout(&b, sizeof(b));
+}
+
+CArchive& CArchive::operator<<(char c)
+{
+  return streamout(&c, sizeof(c));
+}
+
+CArchive& CArchive::operator<<(const std::string& str)
+{
+  auto size = static_cast<uint32_t>(str.size());
+  if (size > MAX_STRING_SIZE)
+    throw std::out_of_range("String too large, over 100MB");
+
+  *this << size;
+
+  return streamout(str.data(), size * sizeof(char));
+}
+
+CArchive& CArchive::operator<<(const std::wstring& wstr)
+{
+  if (wstr.size() > MAX_STRING_SIZE)
+    throw std::out_of_range("String too large, over 100MB");
+
+  auto size = static_cast<uint32_t>(wstr.size());
+
+  *this << size;
+
+  return streamout(wstr.data(), size * sizeof(wchar_t));
+}
+
+CArchive& CArchive::operator<<(const KODI::TIME::SystemTime& time)
+{
+  return streamout(&time, sizeof(KODI::TIME::SystemTime));
+}
+
+CArchive& CArchive::operator<<(IArchivable& obj)
+{
+  obj.Archive(*this);
+
+  return *this;
+}
+
+CArchive& CArchive::operator<<(const CVariant& variant)
+{
+  *this << static_cast<int>(variant.type());
+  switch (variant.type())
+  {
+  case CVariant::VariantTypeInteger:
+    *this << variant.asInteger();
+    break;
+  case CVariant::VariantTypeUnsignedInteger:
+    *this << variant.asUnsignedInteger();
+    break;
+  case CVariant::VariantTypeBoolean:
+    *this << variant.asBoolean();
+    break;
+  case CVariant::VariantTypeString:
+    *this << variant.asString();
+    break;
+  case CVariant::VariantTypeWideString:
+    *this << variant.asWideString();
+    break;
+  case CVariant::VariantTypeDouble:
+    *this << variant.asDouble();
+    break;
+  case CVariant::VariantTypeArray:
+    *this << variant.size();
+    for (auto i = variant.begin_array(); i != variant.end_array(); ++i)
+      *this << *i;
+    break;
+  case CVariant::VariantTypeObject:
+    *this << variant.size();
+    for (auto itr = variant.begin_map(); itr != variant.end_map(); ++itr)
+    {
+      *this << itr->first;
+      *this << itr->second;
+    }
+    break;
+  case CVariant::VariantTypeNull:
+  case CVariant::VariantTypeConstNull:
+  default:
+    break;
+  }
+
+  return *this;
+}
+
+CArchive& CArchive::operator<<(const std::vector<std::string>& strArray)
+{
+  if (std::numeric_limits<uint32_t>::max() < strArray.size())
+    throw std::out_of_range("Array too large, over 2^32 in size");
+
+  *this << static_cast<uint32_t>(strArray.size());
+
+  for (auto&& item : strArray)
+    *this << item;
+
+  return *this;
+}
+
+CArchive& CArchive::operator<<(const std::vector<int>& iArray)
+{
+  if (std::numeric_limits<uint32_t>::max() < iArray.size())
+    throw std::out_of_range("Array too large, over 2^32 in size");
+
+  *this << static_cast<uint32_t>(iArray.size());
+
+  for (auto&& item : iArray)
+    *this << item;
+
+  return *this;
+}
+
+CArchive& CArchive::operator>>(std::string& str)
+{
+  uint32_t iLength = 0;
+  *this >> iLength;
+
+  if (iLength > MAX_STRING_SIZE)
+    throw std::out_of_range("String too large, over 100MB");
+
+  auto s = std::unique_ptr<char[]>(new char[iLength]);
+  streamin(s.get(), iLength * sizeof(char));
+  str.assign(s.get(), iLength);
+
+  return *this;
+}
+
+CArchive& CArchive::operator>>(std::wstring& wstr)
+{
+  uint32_t iLength = 0;
+  *this >> iLength;
+
+  if (iLength > MAX_STRING_SIZE)
+    throw std::out_of_range("String too large, over 100MB");
+
+  auto p = std::unique_ptr<wchar_t[]>(new wchar_t[iLength]);
+  streamin(p.get(), iLength * sizeof(wchar_t));
+  wstr.assign(p.get(), iLength);
+
+  return *this;
+}
+
+CArchive& CArchive::operator>>(KODI::TIME::SystemTime& time)
+{
+  return streamin(&time, sizeof(KODI::TIME::SystemTime));
+}
+
+CArchive& CArchive::operator>>(IArchivable& obj)
+{
+  obj.Archive(*this);
+
+  return *this;
+}
+
+CArchive& CArchive::operator>>(CVariant& variant)
+{
+  int type;
+  *this >> type;
+  variant = CVariant(static_cast<CVariant::VariantType>(type));
+
+  switch (variant.type())
+  {
+  case CVariant::VariantTypeInteger:
+  {
+    int64_t value;
+    *this >> value;
+    variant = value;
+    break;
+  }
+  case CVariant::VariantTypeUnsignedInteger:
+  {
+    uint64_t value;
+    *this >> value;
+    variant = value;
+    break;
+  }
+  case CVariant::VariantTypeBoolean:
+  {
+    bool value;
+    *this >> value;
+    variant = value;
+    break;
+  }
+  case CVariant::VariantTypeString:
+  {
+    std::string value;
+    *this >> value;
+    variant = value;
+    break;
+  }
+  case CVariant::VariantTypeWideString:
+  {
+    std::wstring value;
+    *this >> value;
+    variant = value;
+    break;
+  }
+  case CVariant::VariantTypeDouble:
+  {
+    double value;
+    *this >> value;
+    variant = value;
+    break;
+  }
+  case CVariant::VariantTypeArray:
+  {
+    unsigned int size;
+    *this >> size;
+    for (; size > 0; size--)
+    {
+      CVariant value;
+      *this >> value;
+      variant.append(value);
+    }
+    break;
+  }
+  case CVariant::VariantTypeObject:
+  {
+    unsigned int size;
+    *this >> size;
+    for (; size > 0; size--)
+    {
+      std::string name;
+      CVariant value;
+      *this >> name;
+      *this >> value;
+      variant[name] = value;
+    }
+    break;
+  }
+  case CVariant::VariantTypeNull:
+  case CVariant::VariantTypeConstNull:
+  default:
+    break;
+  }
+
+  return *this;
+}
+
+CArchive& CArchive::operator>>(std::vector<std::string>& strArray)
+{
+  uint32_t size;
+  *this >> size;
+  strArray.clear();
+  for (uint32_t index = 0; index < size; index++)
+  {
+    std::string str;
+    *this >> str;
+    strArray.push_back(std::move(str));
+  }
+
+  return *this;
+}
+
+CArchive& CArchive::operator>>(std::vector<int>& iArray)
+{
+  uint32_t size;
+  *this >> size;
+  iArray.clear();
+  for (uint32_t index = 0; index < size; index++)
+  {
+    int i;
+    *this >> i;
+    iArray.push_back(i);
+  }
+
+  return *this;
+}
+
+void CArchive::FlushBuffer()
+{
+  if (m_iMode == store && m_BufferPos != m_pBuffer.get())
+  {
+    if (m_pFile->Write(m_pBuffer.get(), m_BufferPos - m_pBuffer.get()) != m_BufferPos - m_pBuffer.get())
+      CLog::Log(LOGERROR, "%s: Error flushing buffer", __FUNCTION__);
+    else
+    {
+      m_BufferPos = m_pBuffer.get();
+      m_BufferRemain = CARCHIVE_BUFFER_MAX;
+    }
+  }
+}
+
+CArchive &CArchive::streamout_bufferwrap(const uint8_t *ptr, size_t size)
+{
+  do
+  {
+    auto chunkSize = std::min(size, m_BufferRemain);
+    m_BufferPos = std::copy(ptr, ptr + chunkSize, m_BufferPos);
+    ptr += chunkSize;
+    size -= chunkSize;
+    m_BufferRemain -= chunkSize;
+    if (m_BufferRemain == 0)
+      FlushBuffer();
+  } while (size > 0);
+  return *this;
+}
+
+void CArchive::FillBuffer()
+{
+  if (m_iMode == load && m_BufferRemain == 0)
+  {
+    auto read = m_pFile->Read(m_pBuffer.get(), CARCHIVE_BUFFER_MAX);
+    if (read > 0)
+    {
+      m_BufferRemain = read;
+      m_BufferPos = m_pBuffer.get();
+    }
+  }
+}
+
+CArchive &CArchive::streamin_bufferwrap(uint8_t *ptr, size_t size)
+{
+  auto orig_ptr = ptr;
+  auto orig_size = size;
+  do
+  {
+    if (m_BufferRemain == 0)
+    {
+      FillBuffer();
+      if (m_BufferRemain < CARCHIVE_BUFFER_MAX && m_BufferRemain < size)
+      {
+        CLog::Log(LOGERROR, "%s: can't stream in: requested %lu bytes, was read %lu bytes", __FUNCTION__,
+            static_cast<unsigned long>(orig_size), static_cast<unsigned long>(ptr - orig_ptr + m_BufferRemain));
+
+        memset(orig_ptr, 0, orig_size);
+        return *this;
+      }
+    }
+    auto chunkSize = std::min(size, m_BufferRemain);
+    ptr = std::copy(m_BufferPos, m_BufferPos + chunkSize, ptr);
+    m_BufferPos += chunkSize;
+    m_BufferRemain -= chunkSize;
+    size -= chunkSize;
+  } while (size > 0);
+  return *this;
+}