/// <summary>
/// Reads section keys information which can be used to match "ref lib" component names into
/// usable compound storage section names.
/// <para>
/// Data read can be accessed through the <see cref="GetSectionKeyFromRefName"/> method.
/// </para>
/// </summary>
private void ReadSectionKeys()
{
SectionKeys.Clear();
var data = Cf.TryGetStream("SectionKeys");
if (data == null)
{
return;
}
BeginContext("SectionKeys");
using (var reader = data.GetBinaryReader())
{
var parameters = ReadBlock(reader, size => ReadParameters(reader, size));
var keyCount = parameters["KEYCOUNT"].AsIntOrDefault();
for (int i = 0; i < keyCount; ++i)
{
var libRef = parameters[$"LIBREF{i}"].AsString();
var sectionKey = parameters[$"SECTIONKEY{i}"].AsString();
SectionKeys.Add(libRef, sectionKey);
}
}
EndContext();
}
/// <summary>
/// Reads section keys information which can be used to match "ref lib" component names into
/// usable compound storage section names.
/// <para>
/// Data read can be accessed through the <see cref="GetSectionKeyFromRefName"/> method.
/// </para>
/// </summary>
private void ReadSectionKeys()
{
SectionKeys.Clear();
var data = Cf.TryGetStream("SectionKeys");
if (data == null)
{
return;
}
BeginContext("SectionKeys");
using (var reader = data.GetBinaryReader())
{
var keyCount = reader.ReadInt32();
for (int i = 0; i < keyCount; ++i)
{
var libRef = ReadPascalString(reader);
var sectionKey = ReadStringBlock(reader);
SectionKeys.Add(libRef, sectionKey);
}
}
EndContext();
}
/// <summary>
/// Get the name of the section storage key to be used to read a component "ref name".
/// <para>
/// This allows for giving an alias for reading a component that has a name that is
/// not supported by the compound file storage format because of its limitations.
/// </para>
/// <para>
/// In case the <see cref="DoReadSectionKeys(Dictionary{string, string})"/> didn't
/// properly provide a relevant list of "ref name" to section keys, we attempt the
/// to guess the possible way the component name can be mangled to fit the compound
/// storage format naming limitations.
/// </para>
/// </summary>
/// <param name="refName">Component reference name.</param>
/// <returns>
/// A storage section key where to access the data for the given <paramref name="refName"/>.
/// </returns>
protected string GetSectionKeyFromRefName(string refName)
{
if (SectionKeys.TryGetValue(refName, out var result))
{
return(result);
}
else
{
return(refName?.Substring(0, refName.Length > 31 ? 31 : refName.Length).Replace('/', '_'));
}
}
