Add partition space information to File class

Add File::totalSpaceImpl(), File::usableSpaceImpl() and File::freeSpaceImpl() to retrieve total, available and usable space in the filesystem for the specified path.

Foundation/include/Poco/File.h

@@ -208,6 +208,15 @@ public:
 		/// Fills the vector with the names of all
 		/// files in the directory.
 
+	FileSize totalSpace() const;
+		/// Returns the total size in bytes of the partition containing this path.
+
+	FileSize usableSpace() const;
+		/// Returns the number of usable free bytes on the partition containing this path.
+
+	FileSize freeSpace() const;
+		/// Returns the number of free bytes on the partition containing this path.
+
 	bool operator == (const File& file) const;
 	bool operator != (const File& file) const;
 	bool operator <  (const File& file) const;

Foundation/include/Poco/File_UNIX.h

@@ -58,6 +58,9 @@ protected:
 	void removeImpl();
 	bool createFileImpl();
 	bool createDirectoryImpl();
+	FileSizeImpl totalSpaceImpl() const;
+	FileSizeImpl usableSpaceImpl() const;
+	FileSizeImpl freeSpaceImpl() const;
 	static void handleLastErrorImpl(const std::string& path);
 	
 private:

Foundation/include/Poco/File_VMS.h

@@ -59,6 +59,9 @@ protected:
 	void removeImpl();
 	bool createFileImpl();
 	bool createDirectoryImpl();
+	FileSizeImpl totalSpaceImpl() const;
+	FileSizeImpl usableSpaceImpl() const;
+	FileSizeImpl freeSpaceImpl() const;
 	static void handleLastError(const std::string& path);
 	
 private:

Foundation/include/Poco/File_VX.h

@@ -58,6 +58,9 @@ protected:
 	void removeImpl();
 	bool createFileImpl();
 	bool createDirectoryImpl();
+	FileSizeImpl totalSpaceImpl() const;
+	FileSizeImpl usableSpaceImpl() const;
+	FileSizeImpl freeSpaceImpl() const;
 	static void handleLastErrorImpl(const std::string& path);
 	
 private:

Foundation/include/Poco/File_WIN32.h

@@ -59,6 +59,9 @@ protected:
 	void removeImpl();
 	bool createFileImpl();
 	bool createDirectoryImpl();
+	FileSizeImpl totalSpaceImpl() const;
+	FileSizeImpl usableSpaceImpl() const;
+	FileSizeImpl freeSpaceImpl() const;
 	static void handleLastErrorImpl(const std::string& path);
 	
 private:

Foundation/include/Poco/File_WIN32U.h

@@ -59,6 +59,9 @@ protected:
 	void removeImpl();
 	bool createFileImpl();
 	bool createDirectoryImpl();
+	FileSizeImpl totalSpaceImpl() const;
+	FileSizeImpl usableSpaceImpl() const;
+	FileSizeImpl freeSpaceImpl() const;
 	static void handleLastErrorImpl(const std::string& path);
 	
 private:

Foundation/include/Poco/File_WINCE.h

@@ -59,6 +59,9 @@ protected:
 	void removeImpl();
 	bool createFileImpl();
 	bool createDirectoryImpl();
+	FileSizeImpl totalSpaceImpl() const;
+	FileSizeImpl usableSpaceImpl() const;
+	FileSizeImpl freeSpaceImpl() const;
 	static void handleLastErrorImpl(const std::string& path);
 	
 private:

Foundation/src/File.cpp

@@ -316,6 +316,24 @@ void File::list(std::vector<std::string>& files) const
 }
 
 
+File::FileSize File::totalSpace() const
+{
+	return totalSpaceImpl();
+}
+
+
+File::FileSize File::usableSpace() const
+{
+	return usableSpaceImpl();
+}
+
+
+File::FileSize File::freeSpace() const
+{
+	return freeSpaceImpl();
+}
+
+
 void File::list(std::vector<File>& files) const
 {
 	files.clear();

Foundation/src/File_UNIX.cpp

@@ -20,6 +20,12 @@
 #include <algorithm>
 #include <sys/stat.h>
 #include <sys/types.h>
+#if defined(POCO_OS_FAMILY_BSD)
+#include <sys/param.h>
+#include <sys/mount.h>
+#else
+#include <sys/statfs.h>
+#endif
 #include <fcntl.h>
 #include <errno.h>
 #include <unistd.h>
@@ -408,6 +414,42 @@ bool FileImpl::createDirectoryImpl()
 }
 
 
+FileImpl::FileSizeImpl FileImpl::totalSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	struct statfs stats;
+	if (statfs(_path.c_str(), &stats) != 0)
+		handleLastErrorImpl(_path);
+
+	return (FileSizeImpl)stats.f_blocks * (FileSizeImpl)stats.f_bsize;
+}
+
+
+FileImpl::FileSizeImpl FileImpl::usableSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	struct statfs stats;
+	if (statfs(_path.c_str(), &stats) != 0)
+		handleLastErrorImpl(_path);
+
+	return (FileSizeImpl)stats.f_bavail * (FileSizeImpl)stats.f_bsize;
+}
+
+
+FileImpl::FileSizeImpl FileImpl::freeSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	struct statfs stats;
+	if (statfs(_path.c_str(), &stats) != 0)
+		handleLastErrorImpl(_path);
+
+	return (FileSizeImpl)stats.f_bfree * (FileSizeImpl)stats.f_bsize;
+}
+
+
 void FileImpl::handleLastErrorImpl(const std::string& path)
 {
 	switch (errno)

Foundation/src/File_VMS.cpp

@@ -350,6 +350,36 @@ bool FileImpl::createDirectoryImpl()
 }
 
 
+FileImpl::FileSizeImpl FileImpl::totalSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	// TODO: implement
+	
+	return -1;
+}
+
+
+FileImpl::FileSizeImpl FileImpl::usableSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	// TODO: implement
+	
+	return -1;
+}
+
+
+FileImpl::FileSizeImpl FileImpl::freeSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	// TODO: implement
+	
+	return -1;
+}
+
+
 void FileImpl::handleLastErrorImpl(const std::string& path)
 {
 	switch (errno)

Foundation/src/File_VX.cpp

@@ -330,6 +330,42 @@ bool FileImpl::createDirectoryImpl()
 }
 
 
+FileImpl::FileSizeImpl FileImpl::totalSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	struct statfs stats;
+	if (statfs(_path.c_str(), &stats) != 0)
+		handleLastErrorImpl(_path);
+
+	return (FileSizeImpl)stats.f_blocks * (FileSizeImpl)stats.f_bsize;
+}
+
+
+FileImpl::FileSizeImpl FileImpl::usableSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	struct statfs stats;
+	if (statfs(_path.c_str(), &stats) != 0)
+		handleLastErrorImpl(_path);
+
+	return (FileSizeImpl)stats.f_bavail * (FileSizeImpl)stats.f_bsize;
+}
+
+
+FileImpl::FileSizeImpl FileImpl::freeSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	struct statfs stats;
+	if (statfs(_path.c_str(), &stats) != 0)
+		handleLastErrorImpl(_path);
+
+	return (FileSizeImpl)stats.f_bfree * (FileSizeImpl)stats.f_bsize;
+}
+
+
 void FileImpl::handleLastErrorImpl(const std::string& path)
 {
 	switch (errno)

Foundation/src/File_WIN32.cpp

@@ -349,6 +349,39 @@ bool FileImpl::createDirectoryImpl()
 }
 
 
+FileImpl::FileSizeImpl FileImpl::totalSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	ULARGE_INTEGER space;
+	if (!GetDiskFreeSpaceEx(_path.c_str(), NULL, &space, NULL))
+		handleLastErrorImpl(_path);
+	return space.QuadPart;
+}
+
+
+FileImpl::FileSizeImpl FileImpl::usableSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	ULARGE_INTEGER space;
+	if (!GetDiskFreeSpaceEx(_path.c_str(), &space, NULL, NULL))
+		handleLastErrorImpl(_path);
+	return space.QuadPart;
+}
+
+
+FileImpl::FileSizeImpl FileImpl::freeSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	ULARGE_INTEGER space;
+	if (!GetDiskFreeSpaceEx(_path.c_str(), NULL, NULL, &space))
+		handleLastErrorImpl(_path);
+	return space.QuadPart;
+}
+
+
 void FileImpl::handleLastErrorImpl(const std::string& path)
 {
 	DWORD err = GetLastError();

Foundation/src/File_WIN32U.cpp

@@ -357,6 +357,39 @@ bool FileImpl::createDirectoryImpl()
 }
 
 
+FileImpl::FileSizeImpl FileImpl::totalSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	ULARGE_INTEGER space;
+	if (!GetDiskFreeSpaceExW(_upath.c_str(), NULL, &space, NULL))
+		handleLastErrorImpl(_path);
+	return space.QuadPart;
+}
+
+
+FileImpl::FileSizeImpl FileImpl::usableSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	ULARGE_INTEGER space;
+	if (!GetDiskFreeSpaceExW(_upath.c_str(), &space, NULL, NULL))
+		handleLastErrorImpl(_path);
+	return space.QuadPart;
+}
+
+
+FileImpl::FileSizeImpl FileImpl::freeSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	ULARGE_INTEGER space;
+	if (!GetDiskFreeSpaceExW(_upath.c_str(), NULL, NULL, &space))
+		handleLastErrorImpl(_path);
+	return space.QuadPart;
+}
+
+
 void FileImpl::handleLastErrorImpl(const std::string& path)
 {
 	DWORD err = GetLastError();

Foundation/src/File_WINCE.cpp

@@ -348,6 +348,39 @@ bool FileImpl::createDirectoryImpl()
 }
 
 
+FileImpl::FileSizeImpl FileImpl::totalSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	ULARGE_INTEGER space;
+	if (!GetDiskFreeSpaceExW(_upath.c_str(), NULL, &space, NULL))
+		handleLastErrorImpl(_path);
+	return space.QuadPart;
+}
+
+
+FileImpl::FileSizeImpl FileImpl::usableSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	ULARGE_INTEGER space;
+	if (!GetDiskFreeSpaceExW(_upath.c_str(), &space, NULL, NULL))
+		handleLastErrorImpl(_path);
+	return space.QuadPart;
+}
+
+
+FileImpl::FileSizeImpl FileImpl::freeSpaceImpl() const
+{
+	poco_assert(!_path.empty());
+
+	ULARGE_INTEGER space;
+	if (!GetDiskFreeSpaceExW(_upath.c_str(), NULL, NULL, &space))
+		handleLastErrorImpl(_path);
+	return space.QuadPart;
+}
+
+
 void FileImpl::handleLastErrorImpl(const std::string& path)
 {
 	switch (GetLastError())

Foundation/testsuite/src/FileTest.cpp

@@ -180,6 +180,33 @@ void FileTest::testFileAttributes1()
 	catch (Exception&)
 	{
 	}
+
+	try
+	{
+		f.totalSpace();
+		failmsg("file does not exist - must throw exception");
+	}
+	catch (Exception&)
+	{
+	}
+
+	try
+	{
+		f.usableSpace();
+		failmsg("file does not exist - must throw exception");
+	}
+	catch (Exception&)
+	{
+	}
+
+	try
+	{
+		f.freeSpace();
+		failmsg("file does not exist - must throw exception");
+	}
+	catch (Exception&)
+	{
+	}
 }
 
 
@@ -317,6 +344,15 @@ void FileTest::testSize()
 }
 
 
+void FileTest::testSpace()
+{
+	File f(Path::home());
+	assert(f.totalSpace() > 0);
+	assert(f.usableSpace() > 0);
+	assert(f.freeSpace() > 0);
+}
+
+
 void FileTest::testDirectory()
 {
 	File d("testdir");
@@ -525,6 +561,7 @@ CppUnit::Test* FileTest::suite()
 	CppUnit_addTest(pSuite, FileTest, testCompare);
 	CppUnit_addTest(pSuite, FileTest, testSwap);
 	CppUnit_addTest(pSuite, FileTest, testSize);
+	CppUnit_addTest(pSuite, FileTest, testSpace);
 	CppUnit_addTest(pSuite, FileTest, testDirectory);
 	CppUnit_addTest(pSuite, FileTest, testCopy);
 	CppUnit_addTest(pSuite, FileTest, testMove);

Foundation/testsuite/src/FileTest.h

@@ -33,6 +33,7 @@ public:
 	void testCompare();
 	void testSwap();
 	void testSize();
+	void testSpace();
 	void testDirectory();
 	void testCopy();
 	void testMove();