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Added new method File::getFileIdentifier() for retrieving a file's unique ID.

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This commit is contained in:
jules 2014-05-03 16:46:44 +01:00
parent 167f75772f
commit 27046fd1a7
6 changed files with 60 additions and 10 deletions
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8
modules/juce_core/files/juce_File.h
View file

@ -361,6 +361,14 @@ public:
*/
File getLinkedTarget() const;
/** Returns a unique identifier for the file, if one is available.
Depending on the OS and file-system, this may be a unix inode number or
a win32 file identifier, or 0 if it fails to find one. The number will
be unique on the filesystem, but not globally.
*/
uint64 getFileIdentifier() const;
//==============================================================================
/** Returns the last modification time of this file.

5
modules/juce_core/native/juce_linux_Network.cpp
View file

@ -46,7 +46,10 @@ void MACAddress::findAllAddresses (Array<MACAddress>& result)
&& (ifr.ifr_flags & IFF_LOOPBACK) == 0
&& ioctl (s, SIOCGIFHWADDR, &ifr) == 0)
{
result.addIfNotAlreadyThere (MACAddress ((const uint8*) ifr.ifr_hwaddr.sa_data));
MACAddress ma ((const uint8*) ifr.ifr_hwaddr.sa_data);
if (! ma.isNull())
result.addIfNotAlreadyThere (ma);
}
}

13
modules/juce_core/native/juce_mac_Network.mm
View file

@ -39,12 +39,17 @@ void MACAddress::findAllAddresses (Array<MACAddress>& result)
{
const sockaddr_dl* const sadd = (const sockaddr_dl*) cursor->ifa_addr;
#ifndef IFT_ETHER
#define IFT_ETHER 6
#endif
#ifndef IFT_ETHER
enum { IFT_ETHER = 6 };
#endif
if (sadd->sdl_type == IFT_ETHER)
result.addIfNotAlreadyThere (MACAddress (((const uint8*) sadd->sdl_data) + sadd->sdl_nlen));
{
MACAddress ma (MACAddress (((const uint8*) sadd->sdl_data) + sadd->sdl_nlen));
if (! ma.isNull())
result.addIfNotAlreadyThere (ma);
}
}
}

6
modules/juce_core/native/juce_posix_SharedCode.h
View file

@ -280,6 +280,12 @@ int64 File::getSize() const
return juce_stat (fullPath, info) ? info.st_size : 0;
}
uint64 File::getFileIdentifier() const
{
juce_statStruct info;
return juce_stat (fullPath, info) ? (uint64) info.st_ino : 0;
}
//==============================================================================
bool File::hasWriteAccess() const
{

22
modules/juce_core/native/juce_win32_Files.cpp
View file

@ -474,6 +474,28 @@ int64 File::getVolumeTotalSize() const
return WindowsFileHelpers::getDiskSpaceInfo (getFullPathName(), true);
}
uint64 File::getFileIdentifier() const
{
uint64 result = 0;
HANDLE h = CreateFile (getFullPathName().toWideCharPointer(),
GENERIC_READ, FILE_SHARE_READ, nullptr,
OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
if (h != INVALID_HANDLE_VALUE)
{
BY_HANDLE_FILE_INFORMATION info;
zerostruct (info);
if (GetFileInformationByHandle (h, &info))
result = (((uint64) info.nFileIndexHigh) << 32) | info.nFileIndexLow;
CloseHandle (h);
}
return result;
}
//==============================================================================
bool File::isOnCDRomDrive() const
{

16
modules/juce_core/native/juce_win32_Network.cpp
View file

@ -287,7 +287,7 @@ private:
if (bytesToDo > 0
&& ! InternetWriteFile (request,
static_cast <const char*> (postData.getData()) + bytesSent,
static_cast<const char*> (postData.getData()) + bytesSent,
(DWORD) bytesToDo, &bytesDone))
{
break;
@ -342,7 +342,13 @@ struct GetAdaptersInfoHelper
namespace MACAddressHelpers
{
void getViaGetAdaptersInfo (Array<MACAddress>& result)
static void addAddress (Array<MACAddress>& result, const MACAddress& ma)
{
if (! ma.isNull())
result.addIfNotAlreadyThere (ma);
}
static void getViaGetAdaptersInfo (Array<MACAddress>& result)
{
GetAdaptersInfoHelper gah;
@ -350,11 +356,11 @@ namespace MACAddressHelpers
{
for (PIP_ADAPTER_INFO adapter = gah.adapterInfo; adapter != nullptr; adapter = adapter->Next)
if (adapter->AddressLength >= 6)
result.addIfNotAlreadyThere (MACAddress (adapter->Address));
addAddress (result, MACAddress (adapter->Address));
}
}
void getViaNetBios (Array<MACAddress>& result)
static void getViaNetBios (Array<MACAddress>& result)
{
DynamicLibrary dll ("netapi32.dll");
JUCE_LOAD_WINAPI_FUNCTION (dll, Netbios, NetbiosCall, UCHAR, (PNCB))
@ -396,7 +402,7 @@ namespace MACAddressHelpers
ncb.ncb_length = sizeof (ASTAT);
if (NetbiosCall (&ncb) == 0 && astat.adapt.adapter_type == 0xfe)
result.addIfNotAlreadyThere (MACAddress (astat.adapt.adapter_address));
addAddress (result, MACAddress (astat.adapt.adapter_address));
}
}
}