/**
* Checks whether this section is equal To another object. The result Is
* <c>false</c> if one of the the following conditions holds:
*
* <ul>
*
* <li>The other object is not a {@link Section}.</li>
*
* <li>The format IDs of the two sections are not equal.</li>
*
* <li>The sections have a different number of properties. However,
* properties with ID 1 (codepage) are not counted.</li>
*
* <li>The other object is not a {@link Section}.</li>
*
* <li>The properties have different values. The order of the properties
* is irrelevant.</li>
*
* </ul>
*
* @param o The object To Compare this section with
* @return <c>true</c> if the objects are equal, <c>false</c> if
* not
*/
public override bool Equals(Object o)
{
if (o == null || !(o is Section))
{
return(false);
}
Section s = (Section)o;
if (!s.FormatID.Equals(FormatID))
{
return(false);
}
/* Compare all properties except 0 and 1 as they must be handled
* specially. */
Property[] pa1 = new Property[Properties.Length];
Property[] pa2 = new Property[s.Properties.Length];
System.Array.Copy(Properties, 0, pa1, 0, pa1.Length);
System.Array.Copy(s.Properties, 0, pa2, 0, pa2.Length);
/* Extract properties 0 and 1 and Remove them from the copy of the
* arrays. */
Property p10 = null;
Property p20 = null;
for (int i = 0; i < pa1.Length; i++)
{
long id = pa1[i].ID;
if (id == 0)
{
p10 = pa1[i];
pa1 = Remove(pa1, i);
i--;
}
if (id == 1)
{
// p11 = pa1[i];
pa1 = Remove(pa1, i);
i--;
}
}
for (int i = 0; i < pa2.Length; i++)
{
long id = pa2[i].ID;
if (id == 0)
{
p20 = pa2[i];
pa2 = Remove(pa2, i);
i--;
}
if (id == 1)
{
// p21 = pa2[i];
pa2 = Remove(pa2, i);
i--;
}
}
/* If the number of properties (not counting property 1) is unequal the
* sections are unequal. */
if (pa1.Length != pa2.Length)
{
return(false);
}
/* If the dictionaries are unequal the sections are unequal. */
bool dictionaryEqual = true;
if (p10 != null && p20 != null)
{
//tony qu fixed this issue
Hashtable a = (Hashtable)p10.Value;
Hashtable b = (Hashtable)p20.Value;
dictionaryEqual = a.Count == b.Count;
}
else if (p10 != null || p20 != null)
{
dictionaryEqual = false;
}
if (!dictionaryEqual)
{
return(false);
}
else
{
return(Util.AreEqual(pa1, pa2));
}
}
/// <summary>
/// Initializes a new instance of the <see cref="MutableProperty"/> class.
/// </summary>
/// <param name="p">The property To copy.</param>
public MutableProperty(Property p)
{
this.ID=p.ID;
this.Type=p.Type;
this.Value=p.Value;
}
/// <summary>
/// Creates a {@link Section} instance from a byte array.
/// </summary>
/// <param name="src">Contains the complete property Set stream.</param>
/// <param name="offset">The position in the stream that points To the
/// section's format ID.</param>
public Section(byte[] src, int offset)
{
int o1 = offset;
/*
* Read the format ID.
*/
formatID = new ClassID(src, o1);
o1 += ClassID.LENGTH;
/*
* Read the offset from the stream's start and positions To
* the section header.
*/
this.offset = LittleEndian.GetUInt(src, o1);
o1 = (int)this.offset;
/*
* Read the section Length.
*/
size = (int)LittleEndian.GetUInt(src, o1);
o1 += LittleEndianConsts.INT_SIZE;
/*
* Read the number of properties.
*/
int propertyCount = (int)LittleEndian.GetUInt(src, o1);
o1 += LittleEndianConsts.INT_SIZE;
/*
* Read the properties. The offset is positioned at the first
* entry of the property list. There are two problems:
*
* 1. For each property we have To Find out its Length. In the
* property list we Find each property's ID and its offset relative
* To the section's beginning. Unfortunately the properties in the
* property list need not To be in ascending order, so it is not
* possible To calculate the Length as
* (offset of property(i+1) - offset of property(i)). Before we can
* that we first have To sort the property list by ascending offsets.
*
* 2. We have To Read the property with ID 1 before we Read other
* properties, at least before other properties containing strings.
* The reason is that property 1 specifies the codepage. If it Is
* 1200, all strings are in Unicode. In other words: Before we can
* Read any strings we have To know whether they are in Unicode or
* not. Unfortunately property 1 is not guaranteed To be the first in
* a section.
*
* The algorithm below Reads the properties in two passes: The first
* one looks for property ID 1 and extracts the codepage number. The
* seconds pass Reads the other properties.
*/
properties = new Property[propertyCount];
/* Pass 1: Read the property list. */
int pass1OffSet = o1;
ArrayList propertyList = new ArrayList(propertyCount);
PropertyListEntry ple;
for (int i = 0; i < properties.Length; i++)
{
ple = new PropertyListEntry();
/* Read the property ID. */
ple.id = (int)LittleEndian.GetUInt(src, pass1OffSet);
pass1OffSet += LittleEndianConsts.INT_SIZE;
/* OffSet from the section's start. */
ple.offset = (int)LittleEndian.GetUInt(src, pass1OffSet);
pass1OffSet += LittleEndianConsts.INT_SIZE;
/* Add the entry To the property list. */
propertyList.Add(ple);
}
/* Sort the property list by ascending offsets: */
propertyList.Sort();
/* Calculate the properties' Lengths. */
for (int i = 0; i < propertyCount - 1; i++)
{
PropertyListEntry ple1 =
(PropertyListEntry)propertyList[i];
PropertyListEntry ple2 =
(PropertyListEntry)propertyList[i + 1];
ple1.Length = ple2.offset - ple1.offset;
}
if (propertyCount > 0)
{
ple = (PropertyListEntry)propertyList[propertyCount - 1];
ple.Length = size - ple.offset;
//if (ple.Length <= 0)
//{
// StringBuilder b = new StringBuilder();
// b.Append("The property Set claims To have a size of ");
// b.Append(size);
// b.Append(" bytes. However, it exceeds ");
// b.Append(ple.offset);
// b.Append(" bytes.");
// throw new IllegalPropertySetDataException(b.ToString());
//}
}
/* Look for the codepage. */
int codepage = -1;
for (IEnumerator i = propertyList.GetEnumerator();
codepage == -1 && i.MoveNext();)
{
ple = (PropertyListEntry)i.Current;
/* Read the codepage if the property ID is 1. */
if (ple.id == PropertyIDMap.PID_CODEPAGE)
{
/* Read the property's value type. It must be
* VT_I2. */
int o = (int)(this.offset + ple.offset);
long type = LittleEndian.GetUInt(src, o);
o += LittleEndianConsts.INT_SIZE;
if (type != Variant.VT_I2)
{
throw new HPSFRuntimeException
("Value type of property ID 1 is not VT_I2 but " +
type + ".");
}
/* Read the codepage number. */
codepage = LittleEndian.GetUShort(src, o);
}
}
/* Pass 2: Read all properties - including the codepage property,
* if available. */
int i1 = 0;
for (IEnumerator i = propertyList.GetEnumerator(); i.MoveNext();)
{
ple = (PropertyListEntry)i.Current;
Property p = new Property(ple.id, src,
this.offset + ple.offset,
ple.Length, codepage);
if (p.ID == PropertyIDMap.PID_CODEPAGE)
{
p = new Property(p.ID, p.Type, codepage);
}
properties[i1++] = p;
}
/*
* Extract the dictionary (if available).
* Tony changed the logic
*/
this.dictionary = (IDictionary)GetProperty(0);
}
