Ejemplo n.º 1
0
func (s *selectionSpec) match(r *marc21.MarcRecord) bool {
	if s.field == "" {
		return true
	}

	if marc21.IsControlFieldTag(s.field) {
		field, err := r.GetControlField(s.field)
		if err != nil {
			return false
		}
		if s.criterion != nil {
			return s.criterion.MatchString(field)
		}
		return true
	} else { // Data Field
		subfields := make([]string, 1)

		field, _ := r.GetDataField(s.field)

		for instance := 0; instance < field.ValueCount(); instance++ {
			// if no subfield is specified in the spec then
			// we want to search all of them. since these can
			// vary per field instance we need to get the list
			// each time.
			if s.subfield != "" {
				subfields[0] = s.subfield
			} else {
				subfields = field.GetSubfields(instance)
			}

			for _, subfield := range subfields {
				sfv := field.GetNthSubfield(subfield, instance)
				if sfv != "" {
					// the subfield exists: need to check because the
					// user supplied subfield may not exist in this
					// instance
					if s.criterion != nil {
						// and there is a search criterion
						if s.criterion.MatchString(sfv) {
							// and it matches
							return true
						}
					} else {
						// no search criterion, but the field exists
						return true
					}
				}
			}
		}
		return false
	}
}
Ejemplo n.º 2
0
func printRecord(record *marc21.MarcRecord, w *tabwriter.Writer) error {
	fmt.Fprintf(w, "Leader\t%s\n", record.GetLeader())
	fields := record.GetFieldList()
	for _, f := range fields {
		if marc21.IsControlFieldTag(f) {
			v, _ := record.GetControlField(f)
			fmt.Fprintf(w, "%s\t%s\n", f, v)
		} else {
			v, _ := record.GetDataField(f)
			printDataField(w, v)
		}
	}
	w.Flush()
	return nil
}