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/*
This file is part of Android File Transfer For Linux.
Copyright (C) 2015-2020 Vladimir Menshakov
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <mtp/ptp/ObjectFormat.h>
#include <mtp/log.h>
#include <algorithm>
#include <ctype.h>
#include <map>
#ifdef HAVE_LIBMAGIC
# include <magic.h>
#endif
namespace mtp
{
namespace
{
std::string GetExtension(const std::string &filename)
{
size_t extPos = filename.rfind('.');
std::string ext = (extPos != filename.npos)? filename.substr(extPos + 1): std::string();
std::transform(ext.begin(), ext.end(), ext.begin(), tolower);
return ext;
}
}
#ifdef HAVE_LIBMAGIC
namespace
{
class Magic
{
magic_t _magic;
std::map<std::string, ObjectFormat> _types;
public:
Magic(): _magic(magic_open(MAGIC_MIME_TYPE | MAGIC_SYMLINK | MAGIC_ERROR))
{
#define MAP_TYPE(name, format) _types[name] = (format)
magic_load(_magic, NULL);
MAP_TYPE("inode/directory", ObjectFormat::Association);
MAP_TYPE("audio/mpeg", ObjectFormat::Mp3);
MAP_TYPE("text/plain", ObjectFormat::Text);
MAP_TYPE("image/jpeg", ObjectFormat::ExifJpeg);
MAP_TYPE("image/gif", ObjectFormat::Gif);
MAP_TYPE("image/x-ms-bmp", ObjectFormat::Bmp);
MAP_TYPE("image/png", ObjectFormat::Png);
MAP_TYPE("audio/x-ms-wma", ObjectFormat::Wma);
MAP_TYPE("audio/ogg", ObjectFormat::Ogg);
MAP_TYPE("audio/x-flac", ObjectFormat::Flac);
MAP_TYPE("audio/x-m4a", ObjectFormat::Aac);
MAP_TYPE("audio/audio/x-wav", ObjectFormat::Aiff);
MAP_TYPE("audio/mp4", ObjectFormat::Mp4);
MAP_TYPE("application/x-mpegurl", ObjectFormat::M3uPlaylist);
#undef MAP_TYPE
}
ObjectFormat GetType(const std::string &path)
{
const char *type = _magic? magic_file(_magic, path.c_str()): NULL;
if (!type)
return ObjectFormat::Undefined;
//debug("MAGIC MIME: ", type);
auto it = _types.find(type);
return it != _types.end()? it->second: ObjectFormat::Undefined;
}
~Magic()
{ if (_magic) magic_close(_magic); }
};
}
#else
namespace
{
struct Magic
{
const ObjectFormat GetType(const std::string &) { return ObjectFormat::Undefined; }
};
}
#endif
ObjectFormat ObjectFormatFromFilename(const std::string &filename)
{
//libmagic missing mime type for m3u files
auto ext = GetExtension(filename);
if (ext == "m3u")
return mtp::ObjectFormat::M3uPlaylist;
static Magic magic;
{
ObjectFormat magicType = magic.GetType(filename);
if (magicType != ObjectFormat::Undefined)
return magicType;
}
if (ext == "mp3")
return mtp::ObjectFormat::Mp3;
else if (ext == "txt")
return mtp::ObjectFormat::Text;
else if (ext == "jpeg" || ext == "jpg")
return mtp::ObjectFormat::ExifJpeg;
else if (ext == "gif")
return mtp::ObjectFormat::Gif;
else if (ext == "bmp")
return mtp::ObjectFormat::Bmp;
else if (ext == "png")
return mtp::ObjectFormat::Png;
else if (ext == "wma")
return mtp::ObjectFormat::Wma;
else if (ext == "ogg")
return mtp::ObjectFormat::Ogg;
else if (ext == "flac")
return mtp::ObjectFormat::Flac;
else if (ext == "aac")
return mtp::ObjectFormat::Aac;
else if (ext == "wav")
return mtp::ObjectFormat::Aiff;
else if (ext == "wmv")
return mtp::ObjectFormat::Wmv;
else if (ext == "mp4")
return mtp::ObjectFormat::Mp4;
else if (ext == "m4a")
return mtp::ObjectFormat::M4a;
else if (ext == "3gp")
return mtp::ObjectFormat::_3gp;
else if (ext == "asf")
return mtp::ObjectFormat::Asf;
else
return ObjectFormat::Undefined;
}
bool IsAudioFormat(ObjectFormat format)
{
switch(format)
{
case ObjectFormat::Aiff:
case ObjectFormat::Wav:
case ObjectFormat::Mp3:
case ObjectFormat::M4a:
case ObjectFormat::UndefinedAudio:
case ObjectFormat::Wma:
case ObjectFormat::Ogg:
case ObjectFormat::Aac:
case ObjectFormat::Audible:
case ObjectFormat::Flac:
return true;
default:
return false;
}
}
bool IsImageFormat(ObjectFormat format)
{
u16 type = static_cast<u16>(format) >> 8;
return type == 0x38;
}
time_t ConvertDateTime(const std::string ×pec)
{
struct tm time = {};
time.tm_isdst = -1;
char *end = strptime(timespec.c_str(), "%Y%m%dT%H%M%S", &time);
if (!end)
return 0;
return mktime(&time);
}
std::string ConvertDateTime(time_t time)
{
struct tm bdt = {};
if (!gmtime_r(&time, &bdt))
throw std::runtime_error("gmtime_r failed");
char buf[64];
size_t r = strftime(buf, sizeof(buf), "%Y%m%dT%H%M%SZ", &bdt);
return std::string(buf, r);
}
std::string ConvertYear(int year)
{
struct tm bdt = {};
bdt.tm_mday = 1;
bdt.tm_year = year - 1900;
auto ts = mktime(&bdt);
if (ts == (time_t) -1)
throw std::runtime_error("mktime failed");
return ConvertDateTime(ts);
}
std::string ToString(ObjectFormat property)
{
switch(property)
{
# define ENUM_VALUE(NAME, VALUE) ENUM_VALUE_TO_STRING(ObjectFormat, NAME, VALUE)
# include <mtp/ptp/ObjectFormat.values.h>
ENUM_VALUE_TO_STRING_DEFAULT(ObjectFormat, property, 4);
}
}
}
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