Package io.github.astrapi69.file.csv

Class CsvFileExtensions

java.lang.Object

io.github.astrapi69.file.csv.CsvFileExtensions

public final class CsvFileExtensions
extends java.lang.Object

Utility class for the use of cvs-files.

Method Summary

Modifier and Type	Method	Description
static java.util.List<java.lang.String>	formatKommaSeperatedFileToList(java.io.File input, java.lang.String encoding)	Reads every line from the File splits the data through a comma and puts them to the List.
static void	formatToCSV(java.io.File input, java.io.File output, java.lang.String encoding)	Formats a file that has in every line one input-data into a csv-file.
static java.util.List<java.util.Map<java.lang.String,java.lang.String>>	getCvsAsListMap(java.io.File input)	Gets the given cvs file as list of maps.
static java.util.List<java.util.Map<java.lang.String,java.lang.String>>	getCvsAsListMap(java.io.File input, java.lang.String encoding)	Gets the given cvs file as list of maps.
static java.lang.String[]	getDataFromLine(java.lang.String line, java.lang.String seperator)	Gets the data from line.
static java.lang.String[]	getDataFromLine(java.lang.String line, java.lang.String seperator, boolean trim)	Gets the data from line.
static int	getLineCountFromCsvFile(java.io.File file)	Gets the line count from csv file.
static java.util.List<java.lang.String>	readDataFromCVSFileToList(java.io.File input, int position, boolean putFirstLine, java.lang.String encoding)	Reads from a csv-file the field from the given position and puts them to the List.
static java.util.List<java.lang.String>	readDataFromCVSFileToList(java.io.File input, int position, boolean putFirstLine, java.lang.String splitChar, java.lang.String encoding)	Reads from a csv-file the field from the given position and puts them to the List.
static java.util.Properties	readFilelistToProperties(java.io.File input)	Read filelist to properties.
static java.util.List<java.lang.String>	readFileToList(java.io.File file)	Reads every line from the given File into a List and returns the List.
static java.util.List<java.lang.String>	readFileToList(java.io.File file, java.lang.String encoding)	Reads every line from the given File into a List and returns the List.
static java.util.List<java.lang.String[]>	readFileToList(java.io.File file, java.lang.String seperator, java.lang.String encoding)	Reads every line from the given File into a List of String arrays and returns the List.
static java.util.List<java.lang.String>	readLinesInList(java.io.File input, java.lang.String encoding)	Reads every line from the File and puts them to the List.
static java.lang.String[]	sortData(java.io.File csvData, java.lang.String encoding)	Read an csv-file and puts them in a String-array.
static void	storeFilelistToProperties(java.io.File output, java.io.File input, java.lang.String comments)	Stores a komma seperated file to a properties object.
static void	writeLines(java.io.File output, java.util.Set<java.lang.String> values, java.lang.String encoding)	Writes the toString() value of each item in a collection to the specified File line by line.
static void	writeLinesToFile(java.util.Collection<java.lang.String> collection, java.io.File output, java.lang.String encoding)	Writes all the String-object in the collection into the given file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

formatKommaSeperatedFileToList

public static java.util.List<java.lang.String> formatKommaSeperatedFileToList(java.io.File input,
                                                                              java.lang.String encoding)
                                                                       throws java.io.IOException

Reads every line from the File splits the data through a comma and puts them to the List.

Parameters:

input - The File from where the input comes.

encoding - The encoding from the file.

Returns:

The List with all lines from the file.

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

formatToCSV

public static void formatToCSV(java.io.File input,
                               java.io.File output,
                               java.lang.String encoding)
                        throws java.io.IOException

Formats a file that has in every line one input-data into a csv-file.

Parameters:

input - The input-file to format. The current format from the file is every data in a line.

output - The file where the formatted data should be inserted.

encoding - the encoding

Throws:

java.io.IOException - When an io error occurs.

getCvsAsListMap

public static java.util.List<java.util.Map<java.lang.String,java.lang.String>> getCvsAsListMap(java.io.File input)
                                                                                              throws java.io.IOException

Gets the given cvs file as list of maps. Every map has as key the header from the column and the corresponding value for this line.

Parameters:

input - the input

Returns:

the cvs as list map

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

getCvsAsListMap

public static java.util.List<java.util.Map<java.lang.String,java.lang.String>> getCvsAsListMap(java.io.File input,
                                                                                                     java.lang.String encoding)
                                                                                              throws java.io.IOException

Gets the given cvs file as list of maps. Every map has as key the header from the column and the corresponding value for this line.

Parameters:

input - the input

encoding - the encoding to read

Returns:

the cvs as list map

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

getDataFromLine

public static java.lang.String[] getDataFromLine(java.lang.String line,
                                                 java.lang.String seperator)

Gets the data from line.

Parameters:

line - the line

seperator - the seperator

Returns:

the data from line

getDataFromLine

public static java.lang.String[] getDataFromLine(java.lang.String line,
                                                 java.lang.String seperator,
                                                 boolean trim)

Gets the data from line.

Parameters:

line - the line

seperator - the seperator

trim - the trim

Returns:

the data from line

getLineCountFromCsvFile

public static int getLineCountFromCsvFile(java.io.File file)
                                   throws java.io.IOException

Gets the line count from csv file.

Parameters:

file - the file

Returns:

the line count from csv file

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

readDataFromCVSFileToList

public static java.util.List<java.lang.String> readDataFromCVSFileToList(java.io.File input,
                                                                         int position,
                                                                         boolean putFirstLine,
                                                                         java.lang.String encoding)
                                                                  throws java.io.IOException

Reads from a csv-file the field from the given position and puts them to the List.

Parameters:

input - The input-file.

position - The position from the field.

putFirstLine - Flag that tells if the first line will be put in the list.

encoding - the encoding

Returns:

The list with the data.

Throws:

java.io.IOException - When a io-problem occurs.

readDataFromCVSFileToList

public static java.util.List<java.lang.String> readDataFromCVSFileToList(java.io.File input,
                                                                         int position,
                                                                         boolean putFirstLine,
                                                                         java.lang.String splitChar,
                                                                         java.lang.String encoding)
                                                                  throws java.io.IOException

Reads from a csv-file the field from the given position and puts them to the List.

Parameters:

input - The input-file.

position - The position from the field.

putFirstLine - Flag that tells if the first line will be put in the list.

splitChar - the split char

encoding - the encoding

Returns:

The list with the data.

Throws:

java.io.IOException - When a io-problem occurs.

readFilelistToProperties

public static java.util.Properties readFilelistToProperties(java.io.File input)
                                                     throws java.io.IOException

Read filelist to properties.

Parameters:

input - the input

Returns:

the properties

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

readFileToList

public static java.util.List<java.lang.String> readFileToList(java.io.File file)
                                                       throws java.io.IOException

Reads every line from the given File into a List and returns the List.

Parameters:

file - The file from where to read.

Returns:

The List with all lines from the File.

Throws:

java.io.IOException - When a io-problem occurs.

readFileToList

public static java.util.List<java.lang.String> readFileToList(java.io.File file,
                                                              java.lang.String encoding)
                                                       throws java.io.IOException

Reads every line from the given File into a List and returns the List.

Parameters:

file - The file from where to read.

encoding - The encoding to read.

Returns:

The List with all lines from the File.

Throws:

java.io.IOException - When a io-problem occurs.

readFileToList

public static java.util.List<java.lang.String[]> readFileToList(java.io.File file,
                                                                java.lang.String seperator,
                                                                java.lang.String encoding)
                                                         throws java.io.IOException

Reads every line from the given File into a List of String arrays and returns the List.

Parameters:

file - The file from where to read.

seperator - the seperator

encoding - The encoding to read.

Returns:

The List with all lines from the File.

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

readLinesInList

public static java.util.List<java.lang.String> readLinesInList(java.io.File input,
                                                               java.lang.String encoding)
                                                        throws java.io.IOException

Reads every line from the File and puts them to the List.

Parameters:

input - The File from where the input comes.

encoding - The encoding from the file.

Returns:

The List with all lines from the file.

Throws:

java.io.IOException - When a io-problem occurs.

sortData

public static java.lang.String[] sortData(java.io.File csvData,
                                          java.lang.String encoding)
                                   throws java.io.FileNotFoundException,
                                          java.io.IOException

Read an csv-file and puts them in a String-array.

Parameters:

csvData - The csv-file with the data.

encoding - The encoding to read.

Returns:

The data from the csv-file as a String-array.

Throws:

java.io.FileNotFoundException - the file not found exception

java.io.IOException - When an io-error occurs.

storeFilelistToProperties

public static void storeFilelistToProperties(java.io.File output,
                                             java.io.File input,
                                             java.lang.String comments)
                                      throws java.io.IOException

Stores a komma seperated file to a properties object. As key is the number from the counter.

Parameters:

output - the output

input - the input

comments - the comments

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

writeLines

public static void writeLines(java.io.File output,
                              java.util.Set<java.lang.String> values,
                              java.lang.String encoding)
                       throws java.io.IOException

Writes the toString() value of each item in a collection to the specified File line by line. The default VM encoding and the default line ending will be used.

Parameters:

output - The File where the values to save.

values - The Set with the values to put into the file.

encoding - The encoding from the file.

Throws:

java.io.IOException - When a io-problem occurs.

writeLinesToFile

public static void writeLinesToFile(java.util.Collection<java.lang.String> collection,
                                    java.io.File output,
                                    java.lang.String encoding)
                             throws java.io.IOException

Writes all the String-object in the collection into the given file.

Parameters:

collection - The collection with the String-object.

output - The file where the String-object will be writing.

encoding - The encoding from the file.

Throws:

java.io.IOException - Signals that an I/O exception has occurred.