fixedwidth 0.4.2 fixedwidth: ^0.4.2 copied to clipboard
A library for working with fixed width files in dart. Easily turn data to and convert from properly formatted fixed width strings with readable layout definitions.
example/fixedwidth_example.dart
import 'package:intl/intl.dart';
import 'package:fixedwidth/fixedwidth.dart';
class PhoneNumber extends Record {
IntegerField area_code = IntegerField(3);
IntegerField prefix = IntegerField(3);
IntegerField line_number = IntegerField(4);
PhoneNumber();
PhoneNumber.fromString(String record) : super.fromString(record);
}
/// Person Record demonstrates using most field types.
///
/// The phone_number field is a `RecordField` which is comprised of
/// an entire record.
class PersonRecord extends Record {
StringField first_name = StringField(20);
StringField last_name = StringField(20);
DateTimeField dob = DateTimeField(10, format: DateFormat("yyyy-MM-dd"));
IntegerField num_siblings = IntegerField(2, defaultValue: 0);
DecimalField amount_due = DecimalField(8, decimals: 2);
PhoneNumber phone_number = PhoneNumber();
PersonRecord();
PersonRecord.fromString(String record) : super.fromString(record);
}
main() {
// You can take a Record, populate it, and turn it to a fixed width string.
var record = PersonRecord()
..first_name.value = "John"
..last_name.value = "Doe"
..dob.value = DateTime(1980, 4, 16)
..num_siblings.value = 2
..amount_due.value = 24.75
..phone_number.area_code.value = 215
..phone_number.prefix.value = 222
..phone_number.line_number.value = 3333;
print("'${record.toString()}'");
print("Total Record Length: ${record.length}");
// You can take a fixed width string and turn it into the appropriate
// dart object
var record2 = PersonRecord.fromString(
"Benjamin Franklin 1706-01-171600003.002151112222");
print(record2.first_name);
print(record2.last_name);
print(record2.dob.value);
print(record2.num_siblings.value);
print(record2.amount_due.value);
print(record2.phone_number.area_code.value);
print(record2.phone_number.prefix.value);
print(record2.phone_number.line_number.value);
}