public ExifPropertyInfo From(PropertyItemEncoded propertyItem)
{
string decodeValue = null;
//find property
var matchedProperty = FindPropertyMatch(propertyItem);
//no match. no property. I'm done with you.
if (matchedProperty == null)
return null;
//need to explicitly convert values to a string to be a consistent type for all values
var convertedValue = _propertyItemValueConverter.From(propertyItem.Type, propertyItem.Value);
//does the value need to be translated from predefined codes?
if (matchedProperty.HasElements)
decodeValue = DecodeValue(matchedProperty, convertedValue);
var propertyInfo = new ExifPropertyInfo()
{
Name = matchedProperty.Attribute("name").Value,
ShortName = matchedProperty.Attribute("shortname").Value,
Value = string.IsNullOrEmpty(decodeValue) ? convertedValue.ToString() : decodeValue
};
return propertyInfo;
}
private XElement FindPropertyMatch(PropertyItemEncoded propertyItem)
{
return _exifProperties.FirstOrDefault(x =>
x.Attribute("dec").Value.Equals(propertyItem.Id.ToString())
|| x.Attribute("hex").Value.Equals(propertyItem.Id.ToString()));
}
