Class FileUtil

java.lang.Object

FileUtil

public class FileUtil
extends java.lang.Object

File utilities for reading from a file with a Scanner, skipping comment lines starting with #.

Constructor Summary

Constructors

Constructor	Description
FileUtil()

Method Summary

Modifier and Type	Method	Description
static java.lang.String	getNonCommentLine(java.util.Scanner in)	Return the next non-comment line.
static java.lang.String	lineWrap(java.util.Scanner in)	Read a long line and return it wrapped into lines.
static java.lang.String	readParagraph(java.util.Scanner in)	Read a paragraph consisting of one or more nonempty lines terminated by an empty line, and return a single String, preserving the newlines, and breaking up lines that are too long.
static java.lang.String	wordWrap(java.lang.String s, int columns)	Add line breaks to s so it wraps within a specified width.

Methods inherited from class java.lang.Object

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

Constructor Detail

FileUtil

public FileUtil()

Method Detail

getNonCommentLine

public static java.lang.String getNonCommentLine(java.util.Scanner in)

Return the next non-comment line. Use this method, not in.nextLine()

Parameters:

in - The source of the next line of text.

Returns:

The next line not starting with #.

lineWrap

public static java.lang.String lineWrap(java.util.Scanner in)

Read a long line and return it wrapped into lines.

Parameters:

in - The source of the next line of text.

Returns:

The line with newlines breaking it up, skipping comment lines starting with "#".

wordWrap

public static java.lang.String wordWrap(java.lang.String s,
                                        int columns)

Add line breaks to s so it wraps within a specified width.

Parameters:

s - The string to break into lines - assumes no newlines.

columns - The maximum number of columns to occupy after wrapping.

Returns:

The whole paragraph, with a newline after each line, except no newline after the final line.

readParagraph

public static java.lang.String readParagraph(java.util.Scanner in)

Read a paragraph consisting of one or more nonempty lines terminated by an empty line, and return a single String, preserving the newlines, and breaking up lines that are too long. The Scanner stops reading after the first empty line.

Parameters:

in - The source of the paragraph text.

Returns:

The whole paragraph, with the newlines after each line, ending with the newline after the last nonempty line.