org.apache.poi.hpsf.Variant Maven / Gradle / Ivy
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(the "License"); you may not use this file except in compliance with
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http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
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package org.apache.poi.hpsf;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* The Variant types as defined by Microsoft's COM. I
* found this information in
* http://www.marin.clara.net/COM/variant_type_definitions.htm.
*
* In the variant types descriptions the following shortcuts are
* used: [V] - may appear in a VARIANT,
* [T] - may appear in a TYPEDESC,
* [P] - may appear in an OLE property set,
* [S] - may appear in a Safe Array.
*
* @author Rainer Klute ([email protected])
*/
public class Variant
{
/**
* [V][P] Nothing, i.e. not a single byte of data.
*/
public static final int VT_EMPTY = 0;
/**
* [V][P] SQL style Null.
*/
public static final int VT_NULL = 1;
/**
* [V][T][P][S] 2 byte signed int.
*/
public static final int VT_I2 = 2;
/**
* [V][T][P][S] 4 byte signed int.
*/
public static final int VT_I4 = 3;
/**
* [V][T][P][S] 4 byte real.
*/
public static final int VT_R4 = 4;
/**
* [V][T][P][S] 8 byte real.
*/
public static final int VT_R8 = 5;
/**
* [V][T][P][S] currency. How long is this? How is it to be
* interpreted?
*/
public static final int VT_CY = 6;
/**
* [V][T][P][S] date. How long is this? How is it to be
* interpreted?
*/
public static final int VT_DATE = 7;
/**
* [V][T][P][S] OLE Automation string. How long is this? How is it
* to be interpreted?
*/
public static final int VT_BSTR = 8;
/**
* [V][T][P][S] IDispatch *. How long is this? How is it to be
* interpreted?
*/
public static final int VT_DISPATCH = 9;
/**
* [V][T][S] SCODE. How
* long is this? How is it to be interpreted?
*/
public static final int VT_ERROR = 10;
/**
* [V][T][P][S] True=-1, False=0.
*/
public static final int VT_BOOL = 11;
/**
* [V][T][P][S] VARIANT *. How long is this? How is it to be
* interpreted?
*/
public static final int VT_VARIANT = 12;
/**
* [V][T][S] IUnknown *. How long is this? How is it to be
* interpreted?
*/
public static final int VT_UNKNOWN = 13;
/**
* [V][T][S] 16 byte fixed point.
*/
public static final int VT_DECIMAL = 14;
/**
* [T] signed char.
*/
public static final int VT_I1 = 16;
/**
* [V][T][P][S] unsigned char.
*/
public static final int VT_UI1 = 17;
/**
* [T][P] unsigned short.
*/
public static final int VT_UI2 = 18;
/**
* [T][P] unsigned int.
*/
public static final int VT_UI4 = 19;
/**
* [T][P] signed 64-bit int.
*/
public static final int VT_I8 = 20;
/**
* [T][P] unsigned 64-bit int.
*/
public static final int VT_UI8 = 21;
/**
* [T] signed machine int.
*/
public static final int VT_INT = 22;
/**
* [T] unsigned machine int.
*/
public static final int VT_UINT = 23;
/**
* [T] C style void.
*/
public static final int VT_VOID = 24;
/**
* [T] Standard return type. How long is this? How is it to be
* interpreted?
*/
public static final int VT_HRESULT = 25;
/**
* [T] pointer type. How long is this? How is it to be
* interpreted?
*/
public static final int VT_PTR = 26;
/**
* [T] (use VT_ARRAY in VARIANT).
*/
public static final int VT_SAFEARRAY = 27;
/**
* [T] C style array. How long is this? How is it to be
* interpreted?
*/
public static final int VT_CARRAY = 28;
/**
* [T] user defined type. How long is this? How is it to be
* interpreted?
*/
public static final int VT_USERDEFINED = 29;
/**
* [T][P] null terminated string.
*/
public static final int VT_LPSTR = 30;
/**
* [T][P] wide (Unicode) null terminated string.
*/
public static final int VT_LPWSTR = 31;
/**
* [P] FILETIME. The FILETIME structure holds a date and time
* associated with a file. The structure identifies a 64-bit
* integer specifying the number of 100-nanosecond intervals which
* have passed since January 1, 1601. This 64-bit value is split
* into the two dwords stored in the structure.
*/
public static final int VT_FILETIME = 64;
/**
* [P] Length prefixed bytes.
*/
public static final int VT_BLOB = 65;
/**
* [P] Name of the stream follows.
*/
public static final int VT_STREAM = 66;
/**
* [P] Name of the storage follows.
*/
public static final int VT_STORAGE = 67;
/**
* [P] Stream contains an object. How long is this? How is it
* to be interpreted?
*/
public static final int VT_STREAMED_OBJECT = 68;
/**
* [P] Storage contains an object. How long is this? How is it
* to be interpreted?
*/
public static final int VT_STORED_OBJECT = 69;
/**
* [P] Blob contains an object. How long is this? How is it to be
* interpreted?
*/
public static final int VT_BLOB_OBJECT = 70;
/**
* [P] Clipboard format. How long is this? How is it to be
* interpreted?
*/
public static final int VT_CF = 71;
/**
* [P] A Class ID.
*
* It consists of a 32 bit unsigned integer indicating the size
* of the structure, a 32 bit signed integer indicating (Clipboard
* Format Tag) indicating the type of data that it contains, and
* then a byte array containing the data.
*
* The valid Clipboard Format Tags are:
*
*
* - {@link Thumbnail#CFTAG_WINDOWS}
* - {@link Thumbnail#CFTAG_MACINTOSH}
* - {@link Thumbnail#CFTAG_NODATA}
* - {@link Thumbnail#CFTAG_FMTID}
*
*
* typedef struct tagCLIPDATA {
* // cbSize is the size of the buffer pointed to
* // by pClipData, plus sizeof(ulClipFmt)
* ULONG cbSize;
* long ulClipFmt;
* BYTE* pClipData;
* } CLIPDATA;
*
* See
* msdn.microsoft.com/library/en-us/com/stgrstrc_0uwk.asp.
*/
public static final int VT_CLSID = 72;
/**
* "MUST be a VersionedStream. The storage representing the (non-simple)
* property set MUST have a stream element with the name in the StreamName
* field." -- [MS-OLEPS] -- v20110920; Object Linking and Embedding (OLE)
* Property Set Data Structures; page 24 / 63
*/
public static final int VT_VERSIONED_STREAM = 0x0049;
/**
* [P] simple counted array. How long is this? How is it to be
* interpreted?
*/
public static final int VT_VECTOR = 0x1000;
/**
* [V] SAFEARRAY*. How
* long is this? How is it to be interpreted?
*/
public static final int VT_ARRAY = 0x2000;
/**
* [V] void* for local use. How long is this? How is it to be
* interpreted?
*/
public static final int VT_BYREF = 0x4000;
/**
* FIXME (3): Document this!
*/
public static final int VT_RESERVED = 0x8000;
/**
* FIXME (3): Document this!
*/
public static final int VT_ILLEGAL = 0xFFFF;
/**
* FIXME (3): Document this!
*/
public static final int VT_ILLEGALMASKED = 0xFFF;
/**
* FIXME (3): Document this!
*/
public static final int VT_TYPEMASK = 0xFFF;
/**
* Maps the numbers denoting the variant types to their corresponding
* variant type names.
*/
private static Map numberToName;
private static Map numberToLength;
/**
* Denotes a variant type with a length that is unknown to HPSF yet.
*/
public static final Integer LENGTH_UNKNOWN = Integer.valueOf(-2);
/**
* Denotes a variant type with a variable length.
*/
public static final Integer LENGTH_VARIABLE = Integer.valueOf(-1);
/**
* Denotes a variant type with a length of 0 bytes.
*/
public static final Integer LENGTH_0 = Integer.valueOf(0);
/**
* Denotes a variant type with a length of 2 bytes.
*/
public static final Integer LENGTH_2 = Integer.valueOf(2);
/**
* Denotes a variant type with a length of 4 bytes.
*/
public static final Integer LENGTH_4 = Integer.valueOf(4);
/**
* Denotes a variant type with a length of 8 bytes.
*/
public static final Integer LENGTH_8 = Integer.valueOf(8);
static
{
/* Initialize the number-to-name map: */
Map tm1 = new HashMap();
tm1.put(Long.valueOf(0), "VT_EMPTY");
tm1.put(Long.valueOf(1), "VT_NULL");
tm1.put(Long.valueOf(2), "VT_I2");
tm1.put(Long.valueOf(3), "VT_I4");
tm1.put(Long.valueOf(4), "VT_R4");
tm1.put(Long.valueOf(5), "VT_R8");
tm1.put(Long.valueOf(6), "VT_CY");
tm1.put(Long.valueOf(7), "VT_DATE");
tm1.put(Long.valueOf(8), "VT_BSTR");
tm1.put(Long.valueOf(9), "VT_DISPATCH");
tm1.put(Long.valueOf(10), "VT_ERROR");
tm1.put(Long.valueOf(11), "VT_BOOL");
tm1.put(Long.valueOf(12), "VT_VARIANT");
tm1.put(Long.valueOf(13), "VT_UNKNOWN");
tm1.put(Long.valueOf(14), "VT_DECIMAL");
tm1.put(Long.valueOf(16), "VT_I1");
tm1.put(Long.valueOf(17), "VT_UI1");
tm1.put(Long.valueOf(18), "VT_UI2");
tm1.put(Long.valueOf(19), "VT_UI4");
tm1.put(Long.valueOf(20), "VT_I8");
tm1.put(Long.valueOf(21), "VT_UI8");
tm1.put(Long.valueOf(22), "VT_INT");
tm1.put(Long.valueOf(23), "VT_UINT");
tm1.put(Long.valueOf(24), "VT_VOID");
tm1.put(Long.valueOf(25), "VT_HRESULT");
tm1.put(Long.valueOf(26), "VT_PTR");
tm1.put(Long.valueOf(27), "VT_SAFEARRAY");
tm1.put(Long.valueOf(28), "VT_CARRAY");
tm1.put(Long.valueOf(29), "VT_USERDEFINED");
tm1.put(Long.valueOf(30), "VT_LPSTR");
tm1.put(Long.valueOf(31), "VT_LPWSTR");
tm1.put(Long.valueOf(64), "VT_FILETIME");
tm1.put(Long.valueOf(65), "VT_BLOB");
tm1.put(Long.valueOf(66), "VT_STREAM");
tm1.put(Long.valueOf(67), "VT_STORAGE");
tm1.put(Long.valueOf(68), "VT_STREAMED_OBJECT");
tm1.put(Long.valueOf(69), "VT_STORED_OBJECT");
tm1.put(Long.valueOf(70), "VT_BLOB_OBJECT");
tm1.put(Long.valueOf(71), "VT_CF");
tm1.put(Long.valueOf(72), "VT_CLSID");
Map tm2 = new HashMap(tm1.size(), 1.0F);
tm2.putAll(tm1);
numberToName = Collections.unmodifiableMap(tm2);
/* Initialize the number-to-length map: */
tm1.clear();
tm1.put(Long.valueOf(0), LENGTH_0);
tm1.put(Long.valueOf(1), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(2), LENGTH_2);
tm1.put(Long.valueOf(3), LENGTH_4);
tm1.put(Long.valueOf(4), LENGTH_4);
tm1.put(Long.valueOf(5), LENGTH_8);
tm1.put(Long.valueOf(6), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(7), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(8), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(9), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(10), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(11), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(12), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(13), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(14), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(16), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(17), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(18), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(19), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(20), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(21), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(22), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(23), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(24), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(25), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(26), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(27), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(28), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(29), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(30), LENGTH_VARIABLE);
tm1.put(Long.valueOf(31), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(64), LENGTH_8);
tm1.put(Long.valueOf(65), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(66), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(67), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(68), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(69), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(70), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(71), LENGTH_UNKNOWN);
tm1.put(Long.valueOf(72), LENGTH_UNKNOWN);
tm2 = new HashMap(tm1.size(), 1.0F);
tm2.putAll(tm1);
numberToLength = Collections.unmodifiableMap(tm2);
}
/**
* Returns the variant type name associated with a variant type
* number.
*
* @param variantType The variant type number
* @return The variant type name or the string "unknown variant type"
*/
public static String getVariantName(final long variantType)
{
final String name = (String) numberToName.get(Long.valueOf(variantType));
return name != null ? name : "unknown variant type";
}
/**
* Returns a variant type's length.
*
* @param variantType The variant type number
* @return The length of the variant type's data in bytes. If the length is
* variable, i.e. the length of a string, -1 is returned. If HPSF does not
* know the length, -2 is returned. The latter usually indicates an
* unsupported variant type.
*/
public static int getVariantLength(final long variantType)
{
final Long key = Long.valueOf((int) variantType);
final Long length = (Long) numberToLength.get(key);
if (length == null)
return -2;
return length.intValue();
}
}