public int Read(byte[] data, int startOffset)
{
int offset = startOffset;
long longLength = LittleEndian.GetUInt(data, offset);
offset += LittleEndian.INT_SIZE;
if (longLength > int.MaxValue)
throw new InvalidOperationException("Vector is too long -- "
+ longLength);
int length = (int)longLength;
_values = new TypedPropertyValue[length];
if (_type == Variant.VT_VARIANT)
{
for (int i = 0; i < length; i++)
{
TypedPropertyValue value = new TypedPropertyValue();
offset += value.Read(data, offset);
_values[i] = value;
}
}
else
{
for (int i = 0; i < length; i++)
{
TypedPropertyValue value = new TypedPropertyValue(_type, null);
// be aware: not padded here
offset += value.ReadValue(data, offset);
_values[i] = value;
}
}
return offset - startOffset;
}
public int Read(byte[] data, int startOffset)
{
int offset = startOffset;
long longLength = LittleEndian.GetUInt(data, offset);
offset += LittleEndian.INT_SIZE;
if (longLength > int.MaxValue)
{
throw new InvalidOperationException("Vector is too long -- "
+ longLength);
}
int length = (int)longLength;
_values = new TypedPropertyValue[length];
if (_type == Variant.VT_VARIANT)
{
for (int i = 0; i < length; i++)
{
TypedPropertyValue value = new TypedPropertyValue();
offset += value.Read(data, offset);
_values[i] = value;
}
}
else
{
for (int i = 0; i < length; i++)
{
TypedPropertyValue value = new TypedPropertyValue(_type, null);
// be aware: not padded here
offset += value.ReadValue(data, offset);
_values[i] = value;
}
}
return(offset - startOffset);
}
/// <summary>
/// Reads a variant type from a byte array
/// </summary>
/// <param name="src">The byte array</param>
/// <param name="offset">The offset in the byte array where the variant starts</param>
/// <param name="length">The Length of the variant including the variant type field</param>
/// <param name="type">The variant type To Read</param>
/// <param name="codepage">The codepage To use for non-wide strings</param>
/// <returns>A Java object that corresponds best To the variant field. For
/// example, a VT_I4 is returned as a {@link long}, a VT_LPSTR as a
/// {@link String}.</returns>
public static Object Read(byte[] src, int offset,
int length, long type, int codepage)
{
TypedPropertyValue typedPropertyValue = new TypedPropertyValue(
(int)type, null);
int unpadded;
try
{
unpadded = typedPropertyValue.ReadValue(src, offset);
}
catch (InvalidOperationException)
{
int propLength = Math.Min(length, src.Length - offset);
byte[] v = new byte[propLength];
System.Array.Copy(src, offset, v, 0, propLength);
throw new ReadingNotSupportedException(type, v);
}
switch ((int)type)
{
case Variant.VT_EMPTY:
case Variant.VT_I4:
case Variant.VT_I8:
case Variant.VT_R8:
/*
* we have more property types that can be converted into Java
* objects, but current API need to be preserved, and it returns
* other types as byte arrays. In future major versions it shall be
* changed -- sergey
*/
return typedPropertyValue.Value;
case Variant.VT_I2:
{
/*
* also for backward-compatibility with prev. versions of POI
* --sergey
*/
return (short)typedPropertyValue.Value;
}
case Variant.VT_FILETIME:
{
Filetime filetime = (Filetime)typedPropertyValue.Value;
return Util.FiletimeToDate((int)filetime.High,
(int)filetime.Low);
}
case Variant.VT_LPSTR:
{
CodePageString string1 = (CodePageString)typedPropertyValue.Value;
return string1.GetJavaValue(codepage);
}
case Variant.VT_LPWSTR:
{
UnicodeString string1 = (UnicodeString)typedPropertyValue.Value;
return string1.ToJavaString();
}
case Variant.VT_CF:
{
// if(l1 < 0) {
/*
* YK: reading the ClipboardData packet (VT_CF) is not quite
* correct. The size of the data is determined by the first four
* bytes of the packet while the current implementation calculates
* it in the Section constructor. Test files in Bugzilla 42726 and
* 45583 clearly show that this approach does not always work. The
* workaround below attempts to gracefully handle such cases instead
* of throwing exceptions.
*
* August 20, 2009
*/
// l1 = LittleEndian.getInt(src, o1); o1 += LittleEndian.INT_SIZE;
// }
// final byte[] v = new byte[l1];
// System.arraycopy(src, o1, v, 0, v.length);
// value = v;
// break;
ClipboardData clipboardData = (ClipboardData)typedPropertyValue.Value;
return clipboardData.ToByteArray();
}
case Variant.VT_BOOL:
{
VariantBool bool1 = (VariantBool)typedPropertyValue.Value;
return (bool)bool1.Value;
}
default:
{
/*
* it is not very good, but what can do without breaking current
* API? --sergey
*/
byte[] v = new byte[unpadded];
System.Array.Copy(src, offset, v, 0, unpadded);
throw new ReadingNotSupportedException(type, v);
}
}
}
/// <summary>
/// Reads a variant type from a byte array
/// </summary>
/// <param name="src">The byte array</param>
/// <param name="offset">The offset in the byte array where the variant starts</param>
/// <param name="length">The Length of the variant including the variant type field</param>
/// <param name="type">The variant type To Read</param>
/// <param name="codepage">The codepage To use for non-wide strings</param>
/// <returns>A Java object that corresponds best To the variant field. For
/// example, a VT_I4 is returned as a {@link long}, a VT_LPSTR as a
/// {@link String}.</returns>
public static Object Read(byte[] src, int offset,
int length, long type, int codepage)
{
TypedPropertyValue typedPropertyValue = new TypedPropertyValue(
(int)type, null);
int unpadded;
try
{
unpadded = typedPropertyValue.ReadValue(src, offset);
}
catch (InvalidOperationException)
{
int propLength = Math.Min(length, src.Length - offset);
byte[] v = new byte[propLength];
System.Array.Copy(src, offset, v, 0, propLength);
throw new ReadingNotSupportedException(type, v);
}
switch ((int)type)
{
case Variant.VT_EMPTY:
case Variant.VT_I4:
case Variant.VT_I8:
case Variant.VT_R8:
/*
* we have more property types that can be converted into Java
* objects, but current API need to be preserved, and it returns
* other types as byte arrays. In future major versions it shall be
* changed -- sergey
*/
return(typedPropertyValue.Value);
case Variant.VT_I2:
{
/*
* also for backward-compatibility with prev. versions of POI
* --sergey
*/
return((short)typedPropertyValue.Value);
}
case Variant.VT_FILETIME:
{
Filetime filetime = (Filetime)typedPropertyValue.Value;
return(Util.FiletimeToDate((int)filetime.High,
(int)filetime.Low));
}
case Variant.VT_LPSTR:
{
CodePageString string1 = (CodePageString)typedPropertyValue.Value;
return(string1.GetJavaValue(codepage));
}
case Variant.VT_LPWSTR:
{
UnicodeString string1 = (UnicodeString)typedPropertyValue.Value;
return(string1.ToJavaString());
}
case Variant.VT_CF:
{
// if(l1 < 0) {
/*
* YK: reading the ClipboardData packet (VT_CF) is not quite
* correct. The size of the data is determined by the first four
* bytes of the packet while the current implementation calculates
* it in the Section constructor. Test files in Bugzilla 42726 and
* 45583 clearly show that this approach does not always work. The
* workaround below attempts to gracefully handle such cases instead
* of throwing exceptions.
*
* August 20, 2009
*/
// l1 = LittleEndian.getInt(src, o1); o1 += LittleEndian.INT_SIZE;
// }
// final byte[] v = new byte[l1];
// System.arraycopy(src, o1, v, 0, v.length);
// value = v;
// break;
ClipboardData clipboardData = (ClipboardData)typedPropertyValue.Value;
return(clipboardData.ToByteArray());
}
case Variant.VT_BOOL:
{
VariantBool bool1 = (VariantBool)typedPropertyValue.Value;
return((bool)bool1.Value);
}
default:
{
/*
* it is not very good, but what can do without breaking current
* API? --sergey
*/
byte[] v = new byte[unpadded];
System.Array.Copy(src, offset, v, 0, unpadded);
throw new ReadingNotSupportedException(type, v);
}
}
}