README.md

CSV Streamer

Lazy CSV reader: plain java, no dependencies, streaming, resource reader, unzip, autodetect delimiters, Immutable, InnerCSV NullPointerException or IndexOutOfBoundsException

Classes

ClassName	UsageType	Description
StreamCSV	static	Stream methods (lazy)
ConsumeCSV	static	Consumer methods (lazy)
ListCsv	static	List methods (in memory)
CsvReader	Object	Configurable reader

Options

Options	Type	Default	Description
Skip	long	-1	Lines to skip while reading csv
charset	Charset	UTF_8	Charset to use for decoding the CSV file
unzip	boolean	false	On true detects and extracts the CSV file automatically
autoSep	boolean	false	On true detects the separator automatically
separators	char...	','	Splits the CSV rows at the given separator

Example listCsv

        final List<CsvRow> csvList = ListCsv.listCsv(EXAMPLE_CSV);

Example ConsumeCSV

        ConsumeCSV.consumeCsv(EXAMPLE_CSV,System.out::println);

Example StreamCSV

        try(final Stream<CsvRow> csvStream = StreamCSV.streamCSV(EXAMPLE_CSV)){
            csvStream.forEach(System.out::println);
        }

Example CsvReader

import static berlin.yuna.logic.CsvReader.csvReader;

public class CsvReaderTest {

    //configuration
    CsvReader reader = csvReader().skipLines(1).charset(UTF_8).separator(';').unzip(true).autoSep(true);

    //read
    List<CsvRow> allLines = reader.readAllRows(EXAMPLE_CSV);

    //consume
    reader.consume(EXAMPLE_CSV,System.out::println);

    //stream
    try(final Stream<CsvRow> lazyStream = reader.streamCSV(EXAMPLE_CSV)){
        lazyStream.forEach(System.out::println);
    }
}

Example InnerCSV

        final List<CsvRow> csvRows = ListCSV.listCSV(EXAMPLE_CSV)
        final CsvRow firstColumn = csvRows.get(0);
        final CsvRow innerCSV = firstColumn.get(0, ',');