xbmc/filesystem/UDFFile.cpp

   1 /*
   2  *  Copyright (C) 2005-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #include "UDFFile.h"
  10
  11 #include "URL.h"
  12
  13 #include <udfread/udfread.h>
  14
  15 using namespace XFILE;
  16
  17 CUDFFile::CUDFFile() : m_bi{std::make_unique<CUDFBlockInput>()}
  18 {
  19 }
  20
  21 bool CUDFFile::Open(const CURL& url)
  22 {
  23   if (m_udf && m_file)
  24     return true;
  25
  26   m_udf = udfread_init();
  27
  28   if (!m_udf)
  29     return false;
  30
  31   auto bi = m_bi->GetBlockInput(url.GetHostName());
  32
  33   if (!bi)
  34   {
  35     udfread_close(m_udf);
  36     return false;
  37   }
  38
  39   if (udfread_open_input(m_udf, bi) < 0)
  40   {
  41     bi->close(bi);
  42     udfread_close(m_udf);
  43     return false;
  44   }
  45
  46   m_file = udfread_file_open(m_udf, url.GetFileName().c_str());
  47   if (!m_file)
  48   {
  49     Close();
  50     return false;
  51   }
  52
  53   return true;
  54 }
  55
  56 void CUDFFile::Close()
  57 {
  58   if (m_file)
  59   {
  60     udfread_file_close(m_file);
  61     m_file = nullptr;
  62   }
  63
  64   if (m_udf)
  65   {
  66     udfread_close(m_udf);
  67     m_udf = nullptr;
  68   }
  69 }
  70
  71 int CUDFFile::Stat(const CURL& url, struct __stat64* buffer)
  72 {
  73   if (!m_udf || !m_file || !buffer)
  74     return -1;
  75
  76   *buffer = {};
  77   buffer->st_size = GetLength();
  78
  79   return 0;
  80 }
  81
  82 ssize_t CUDFFile::Read(void* buffer, size_t size)
  83 {
  84   return udfread_file_read(m_file, buffer, size);
  85 }
  86
  87 int64_t CUDFFile::Seek(int64_t filePosition, int whence)
  88 {
  89   return udfread_file_seek(m_file, filePosition, whence);
  90 }
  91
  92 int64_t CUDFFile::GetLength()
  93 {
  94   return udfread_file_size(m_file);
  95 }
  96
  97 int64_t CUDFFile::GetPosition()
  98 {
  99   return udfread_file_tell(m_file);
 100 }
 101
 102 bool CUDFFile::Exists(const CURL& url)
 103 {
 104   return Open(url);
 105 }