FlatMapper is a library to import and export data from and to plain text files in a Linq compatible way.
- Fast - Only uses Static Reflection and Dynamic methods
- LINQ Compatible
- It supports character delimited and fixed length files
- Non intrusive - You don't have to change your code. Any POCO will work
- No external Dependencies
- Iterative reads - Doesn't need to load the entire file into memory
- Multi-line support (Only on character delimited and quoted)
- Nullables support
- Vitually any type support with FieldValueConverters
- Fluent Interface
- Per line/record Error handling
- Simple to use
var layout = new Layout<TestObject>.FixedLengthLayout()
.HeaderLines(1)
.WithMember(o => o.Id, set => set.WithLength(5).WithLeftPadding('0'))
.WithMember(o => o.Description, set => set.WithLength(25).WithRightPadding(' '))
.WithMember(o => o.NullableInt, set => set.WithLength(5).AllowNull("=Null").WithLeftPadding('0'))
.WithMember(o => o.NullableEnum, set => set.WithLength(10).AllowNull("======NULL").WithLeftPadding(' '))
.WithMember(o => o.Date, set => set.WithLength(19).WithFormat(new CultureInfo("pt-PT"))); //PT-pt default dates are always fixed 19 chars "13-12-2015 23:41:41"
var layout = new Layout<TestObject>.DelimitedLayout()
.WithDelimiter(";")
.WithQuote("\"")
.HeaderLines(1)
.WithMember(o => o.Id, set => set.WithLength(5).WithLeftPadding('0'))
.WithMember(o => o.Description, set => set.WithLength(25).WithRightPadding(' '))
.WithMember(o => o.NullableInt, set => set.WithLength(5).AllowNull("=Null").WithLeftPadding('0'))
.WithMember(o => o.NullableEnum, set => set.WithLength(10).AllowNull("").WithLeftPadding(' '))
.WithMember(o => o.Date, set => set.WithFormat(new CultureInfo("pt-PT")));
//Reading data
using (var fileStream = File.OpenRead("c:\temp\data.txt"))
{
var flatfile = new FlatFile<TestObject>(layout, fileStream);
foreach(var objectInstance in flatfile.Read())
{
//Do Somethig....
}
}
//Writing data
using (var fileStream = File.OpenWrite("c:\temp\data.txt"))
{
var flatfile = new FlatFile<TestObject>(layout, fileStream)
flatfile.Write(listOfObjects);
}
For more detailed information please check the wiki