Package org.apache.commons.csv
Class ExtendedBufferedReader
java.lang.Object
java.io.Reader
org.apache.commons.io.input.UnsynchronizedReader
org.apache.commons.io.input.UnsynchronizedBufferedReader
org.apache.commons.csv.ExtendedBufferedReader
- All Implemented Interfaces:
Closeable
,AutoCloseable
,Readable
final class ExtendedBufferedReader
extends org.apache.commons.io.input.UnsynchronizedBufferedReader
A special buffered reader which supports sophisticated read access.
In particular the reader supports a look-ahead option, which allows you to see the next char returned by
read()
. This reader also tracks how many characters have been read with getPosition()
.
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate int
The last char returnedprivate int
private long
The count of EOLs (CR/LF/CRLF) seen so farprivate long
private long
The position, which is the number of characters read so farprivate long
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Constructor Summary
ConstructorsConstructorDescriptionExtendedBufferedReader
(Reader reader) Constructs a new instance using the default buffer size. -
Method Summary
Modifier and TypeMethodDescriptionvoid
close()
Closes the stream.(package private) int
Returns the last character that was read as an integer (0 to 65535).(package private) long
Returns the current line number(package private) long
Gets the character position in the reader.void
mark
(int readAheadLimit) int
read()
int
read
(char[] buf, int offset, int length) readLine()
Gets the next line, dropping the line terminator(s).void
reset()
Methods inherited from class org.apache.commons.io.input.UnsynchronizedBufferedReader
markSupported, peek, peek, ready, skip
Methods inherited from class org.apache.commons.io.input.UnsynchronizedReader
isClosed, setClosed
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Field Details
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lastChar
private int lastCharThe last char returned -
lastCharMark
private int lastCharMark -
lineNumber
private long lineNumberThe count of EOLs (CR/LF/CRLF) seen so far -
lineNumberMark
private long lineNumberMark -
position
private long positionThe position, which is the number of characters read so far -
positionMark
private long positionMark
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Constructor Details
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ExtendedBufferedReader
ExtendedBufferedReader(Reader reader) Constructs a new instance using the default buffer size.
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Method Details
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close
Closes the stream.- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Overrides:
close
in classorg.apache.commons.io.input.UnsynchronizedBufferedReader
- Throws:
IOException
- If an I/O error occurs
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getLastChar
int getLastChar()Returns the last character that was read as an integer (0 to 65535). This will be the last character returned by any of the read methods. This will not include a character read using theUnsynchronizedBufferedReader.peek()
method. If no character has been read then this will returnConstants.UNDEFINED
. If the end of the stream was reached on the last read then this will returnIOUtils.EOF
.- Returns:
- the last character that was read
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getLineNumber
long getLineNumber()Returns the current line number- Returns:
- the current line number
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getPosition
long getPosition()Gets the character position in the reader.- Returns:
- the current position in the reader (counting characters, not bytes since this is a Reader)
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mark
- Overrides:
mark
in classorg.apache.commons.io.input.UnsynchronizedBufferedReader
- Throws:
IOException
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read
- Overrides:
read
in classorg.apache.commons.io.input.UnsynchronizedBufferedReader
- Throws:
IOException
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read
- Overrides:
read
in classorg.apache.commons.io.input.UnsynchronizedBufferedReader
- Throws:
IOException
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readLine
Gets the next line, dropping the line terminator(s). This method should only be called when processing a comment, otherwise, information can be lost.Increments
lineNumber
and updatesposition
.Sets
lastChar
toConstants.EOF
at EOF, otherwise the last EOL character.- Overrides:
readLine
in classorg.apache.commons.io.input.UnsynchronizedBufferedReader
- Returns:
- the line that was read, or null if reached EOF.
- Throws:
IOException
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reset
- Overrides:
reset
in classorg.apache.commons.io.input.UnsynchronizedBufferedReader
- Throws:
IOException
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