public static SubField[] GetSubField
(
this RecordField field,
char code
)
{
SubFieldCollection subFields = field.SubFields;
int count = subFields.Length;
List <SubField> result = null;
for (int i = 0; i < count; i++)
{
if (Utility.SameChar(subFields[i].Code, code))
{
if (ReferenceEquals(result, null))
{
result = new List <SubField>();
}
result.Add(subFields[i]);
}
}
return(ReferenceEquals(result, null)
? EmptySubFieldArray
: result.ToArray());
}
public static SubField[] GetSubField
(
this SubFieldCollection subFields,
params char[] codes
)
{
int count = subFields.Length;
List <SubField> result = null;
for (int i = 0; i < count; i++)
{
if (Utility.OneOf(subFields[i].Code, codes))
{
if (ReferenceEquals(result, null))
{
result = new List <SubField>();
}
result.Add(subFields[i]);
}
}
return(ReferenceEquals(result, null)
? EmptySubFieldArray
: result.ToArray());
}
public static SubField[] GetSubField
(
this SubFieldCollection subFields,
Action <SubField> action
)
{
int count = subFields.Length;
SubField[] result = new SubField[count];
for (int i = 0; i < count; i++)
{
SubField item = subFields[i];
result[i] = item;
action(item);
}
return(result);
}
public static bool HaveSubField
(
this RecordField field,
params char[] codes
)
{
SubFieldCollection subFields = field.SubFields;
int count = subFields.Length;
for (int i = 0; i < count; i++)
{
if (Utility.OneOf(subFields[i].Code, codes))
{
return(true);
}
}
return(false);
}
// ==========================================================
public static bool HaveSubField
(
this RecordField field,
char code
)
{
SubFieldCollection subFields = field.SubFields;
int count = subFields.Length;
for (int i = 0; i < count; i++)
{
if (Utility.SameChar(subFields[i].Code, code))
{
return(true);
}
}
return(false);
}
public static SubField GetSubField
(
this RecordField field,
char code,
int occurrence
)
{
SubFieldCollection subFields = field.SubFields;
int count = subFields.Length;
for (int i = 0; i < count; i++)
{
if (Utility.SameChar(subFields[i].Code, code))
{
if (occurrence == 0)
{
return(subFields[i]);
}
occurrence--;
}
}
return(null);
}
public RecordField(int tag)
{
Tag = tag;
_subFields = new SubFieldCollection();
}
public RecordField(string tag)
{
Tag = int.Parse(tag);
_subFields = new SubFieldCollection();
}
