Sort methods in AB order.
This commit is contained in:
Gary Gregory
parent
abd7de4283
commit
21f4f584ba
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@ -184,6 +184,26 @@ public final class CSVParser implements Iterable<CSVRecord>, Closeable {
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}
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}
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/**
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* Header information based on name and position.
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*/
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private static final class Headers {
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/**
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* Header column positions (0-based)
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*/
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final Map<String, Integer> headerMap;
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/**
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* Header names in column order
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*/
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final List<String> headerNames;
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Headers(final Map<String, Integer> headerMap, final List<String> headerNames) {
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this.headerMap = headerMap;
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this.headerNames = headerNames;
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}
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}
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/**
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* Creates a parser for the given {@link File}.
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*
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@ -281,6 +301,8 @@ public final class CSVParser implements Iterable<CSVRecord>, Closeable {
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return new CSVParser(reader, format);
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}
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// the following objects are shared to reduce garbage
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/**
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* Creates a parser for the given {@link String}.
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*
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@ -301,8 +323,6 @@ public final class CSVParser implements Iterable<CSVRecord>, Closeable {
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return new CSVParser(new StringReader(string), format);
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}
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// the following objects are shared to reduce garbage
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/**
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* Creates and returns a parser for the given URL, which the caller MUST close.
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*
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@ -448,26 +468,6 @@ public final class CSVParser implements Iterable<CSVRecord>, Closeable {
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new LinkedHashMap<>();
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}
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/**
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* Header information based on name and position.
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*/
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private static final class Headers {
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/**
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* Header column positions (0-based)
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*/
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final Map<String, Integer> headerMap;
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/**
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* Header names in column order
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*/
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final List<String> headerNames;
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Headers(final Map<String, Integer> headerMap, final List<String> headerNames) {
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this.headerMap = headerMap;
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this.headerNames = headerNames;
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}
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}
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/**
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* Creates the name to index mapping if the format defines a header.
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*
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@ -228,17 +228,6 @@ public final class CSVRecord implements Serializable, Iterable<String> {
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return headerMap != null && headerMap.containsKey(name);
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}
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/**
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* Checks whether a given columns is mapped and has a value.
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*
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* @param name
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* the name of the column to be retrieved.
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* @return whether a given columns is mapped and has a value
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*/
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public boolean isSet(final String name) {
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return isMapped(name) && getHeaderMapRaw().get(name).intValue() < values.length;
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}
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/**
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* Checks whether a column with given index has a value.
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*
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@ -250,6 +239,17 @@ public final class CSVRecord implements Serializable, Iterable<String> {
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return 0 <= index && index < values.length;
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}
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/**
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* Checks whether a given columns is mapped and has a value.
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*
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* @param name
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* the name of the column to be retrieved.
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* @return whether a given columns is mapped and has a value
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*/
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public boolean isSet(final String name) {
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return isMapped(name) && getHeaderMapRaw().get(name).intValue() < values.length;
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}
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/**
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* Returns an iterator over the values of this record.
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*
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@ -53,15 +53,31 @@ final class ExtendedBufferedReader extends BufferedReader {
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super(reader);
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}
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/**
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* Closes the stream.
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*
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* @throws IOException
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* If an I/O error occurs
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*/
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@Override
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public int read() throws IOException {
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final int current = super.read();
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if (current == CR || current == LF && lastChar != CR) {
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eolCounter++;
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public void close() throws IOException {
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// Set ivars before calling super close() in case close() throws an IOException.
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closed = true;
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lastChar = END_OF_STREAM;
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super.close();
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}
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/**
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* Returns the current line number
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*
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* @return the current line number
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*/
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long getCurrentLineNumber() {
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// Check if we are at EOL or EOF or just starting
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if (lastChar == CR || lastChar == LF || lastChar == UNDEFINED || lastChar == END_OF_STREAM) {
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return eolCounter; // counter is accurate
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}
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lastChar = current;
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this.position++;
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return lastChar;
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return eolCounter + 1; // Allow for counter being incremented only at EOL
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}
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/**
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@ -76,6 +92,47 @@ final class ExtendedBufferedReader extends BufferedReader {
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return lastChar;
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}
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/**
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* Gets the character position in the reader.
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*
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* @return the current position in the reader (counting characters, not bytes since this is a Reader)
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*/
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long getPosition() {
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return this.position;
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}
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public boolean isClosed() {
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return closed;
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}
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/**
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* Returns the next character in the current reader without consuming it. So the next call to {@link #read()} will
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* still return this value. Does not affect line number or last character.
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*
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* @return the next character
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*
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* @throws IOException
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* if there is an error in reading
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*/
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int lookAhead() throws IOException {
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super.mark(1);
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final int c = super.read();
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super.reset();
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return c;
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}
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@Override
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public int read() throws IOException {
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final int current = super.read();
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if (current == CR || current == LF && lastChar != CR) {
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eolCounter++;
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}
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lastChar = current;
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this.position++;
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return lastChar;
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}
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@Override
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public int read(final char[] buf, final int offset, final int length) throws IOException {
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if (length == 0) {
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@ -131,61 +188,4 @@ final class ExtendedBufferedReader extends BufferedReader {
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return line;
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}
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/**
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* Returns the next character in the current reader without consuming it. So the next call to {@link #read()} will
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* still return this value. Does not affect line number or last character.
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*
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* @return the next character
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*
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* @throws IOException
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* if there is an error in reading
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*/
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int lookAhead() throws IOException {
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super.mark(1);
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final int c = super.read();
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super.reset();
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return c;
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}
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/**
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* Returns the current line number
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*
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* @return the current line number
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*/
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long getCurrentLineNumber() {
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// Check if we are at EOL or EOF or just starting
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if (lastChar == CR || lastChar == LF || lastChar == UNDEFINED || lastChar == END_OF_STREAM) {
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return eolCounter; // counter is accurate
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}
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return eolCounter + 1; // Allow for counter being incremented only at EOL
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}
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/**
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* Gets the character position in the reader.
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*
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* @return the current position in the reader (counting characters, not bytes since this is a Reader)
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*/
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long getPosition() {
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return this.position;
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}
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public boolean isClosed() {
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return closed;
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}
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/**
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* Closes the stream.
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*
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* @throws IOException
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* If an I/O error occurs
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*/
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@Override
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public void close() throws IOException {
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// Set ivars before calling super close() in case close() throws an IOException.
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closed = true;
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lastChar = END_OF_STREAM;
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super.close();
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}
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}
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@ -60,10 +60,6 @@ final class Lexer implements Closeable {
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private final ExtendedBufferedReader reader;
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private String firstEol;
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String getFirstEol(){
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return firstEol;
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}
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Lexer(final CSVFormat format, final ExtendedBufferedReader reader) {
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this.reader = reader;
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this.delimiter = format.getDelimiter();
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@ -74,6 +70,94 @@ final class Lexer implements Closeable {
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this.ignoreEmptyLines = format.getIgnoreEmptyLines();
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}
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/**
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* Closes resources.
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*
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* @throws IOException
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* If an I/O error occurs
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*/
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@Override
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public void close() throws IOException {
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reader.close();
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}
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/**
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* Returns the current character position
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*
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* @return the current character position
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*/
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long getCharacterPosition() {
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return reader.getPosition();
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}
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/**
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* Returns the current line number
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*
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* @return the current line number
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*/
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long getCurrentLineNumber() {
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return reader.getCurrentLineNumber();
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}
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String getFirstEol(){
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return firstEol;
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}
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boolean isClosed() {
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return reader.isClosed();
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}
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boolean isCommentStart(final int ch) {
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return ch == commentStart;
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}
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boolean isDelimiter(final int ch) {
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return ch == delimiter;
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}
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/**
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* @return true if the given character indicates end of file
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*/
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boolean isEndOfFile(final int ch) {
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return ch == END_OF_STREAM;
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}
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boolean isEscape(final int ch) {
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return ch == escape;
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}
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private boolean isMetaChar(final int ch) {
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return ch == delimiter ||
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ch == escape ||
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ch == quoteChar ||
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ch == commentStart;
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}
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boolean isQuoteChar(final int ch) {
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return ch == quoteChar;
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}
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/**
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* Checks if the current character represents the start of a line: a CR, LF or is at the start of the file.
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*
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* @param ch the character to check
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* @return true if the character is at the start of a line.
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*/
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boolean isStartOfLine(final int ch) {
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return ch == LF || ch == CR || ch == UNDEFINED;
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}
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/**
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* @return true if the given char is a whitespace character
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*/
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boolean isWhitespace(final int ch) {
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return !isDelimiter(ch) && Character.isWhitespace((char) ch);
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}
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private char mapNullToDisabled(final Character c) {
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return c == null ? DISABLED : c.charValue();
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}
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/**
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* Returns the next token.
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* <p>
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@ -170,59 +254,6 @@ final class Lexer implements Closeable {
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return token;
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}
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/**
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* Parses a simple token.
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* <p/>
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* Simple token are tokens which are not surrounded by encapsulators. A simple token might contain escaped
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* delimiters (as \, or \;). The token is finished when one of the following conditions become true:
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* <ul>
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* <li>end of line has been reached (EORECORD)</li>
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* <li>end of stream has been reached (EOF)</li>
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* <li>an unescaped delimiter has been reached (TOKEN)</li>
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* </ul>
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*
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* @param token
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* the current token
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* @param ch
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* the current character
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* @return the filled token
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* @throws IOException
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* on stream access error
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*/
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private Token parseSimpleToken(final Token token, int ch) throws IOException {
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// Faster to use while(true)+break than while(token.type == INVALID)
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while (true) {
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if (readEndOfLine(ch)) {
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token.type = EORECORD;
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break;
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} else if (isEndOfFile(ch)) {
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token.type = EOF;
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token.isReady = true; // There is data at EOF
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break;
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} else if (isDelimiter(ch)) {
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token.type = TOKEN;
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break;
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} else if (isEscape(ch)) {
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final int unescaped = readEscape();
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if (unescaped == END_OF_STREAM) { // unexpected char after escape
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token.content.append((char) ch).append((char) reader.getLastChar());
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} else {
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token.content.append((char) unescaped);
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}
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ch = reader.read(); // continue
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} else {
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token.content.append((char) ch);
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ch = reader.read(); // continue
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}
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}
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if (ignoreSurroundingSpaces) {
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trimTrailingSpaces(token.content);
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}
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return token;
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}
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/**
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* Parses an encapsulated token.
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* <p/>
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@ -294,26 +325,84 @@ final class Lexer implements Closeable {
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}
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}
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private char mapNullToDisabled(final Character c) {
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return c == null ? DISABLED : c.charValue();
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/**
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* Parses a simple token.
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* <p/>
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* Simple token are tokens which are not surrounded by encapsulators. A simple token might contain escaped
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* delimiters (as \, or \;). The token is finished when one of the following conditions become true:
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* <ul>
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* <li>end of line has been reached (EORECORD)</li>
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* <li>end of stream has been reached (EOF)</li>
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* <li>an unescaped delimiter has been reached (TOKEN)</li>
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* </ul>
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*
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* @param token
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* the current token
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* @param ch
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* the current character
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* @return the filled token
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* @throws IOException
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* on stream access error
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*/
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private Token parseSimpleToken(final Token token, int ch) throws IOException {
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// Faster to use while(true)+break than while(token.type == INVALID)
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while (true) {
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if (readEndOfLine(ch)) {
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token.type = EORECORD;
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break;
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} else if (isEndOfFile(ch)) {
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token.type = EOF;
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token.isReady = true; // There is data at EOF
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break;
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} else if (isDelimiter(ch)) {
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token.type = TOKEN;
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break;
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} else if (isEscape(ch)) {
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final int unescaped = readEscape();
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if (unescaped == END_OF_STREAM) { // unexpected char after escape
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token.content.append((char) ch).append((char) reader.getLastChar());
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} else {
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token.content.append((char) unescaped);
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}
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ch = reader.read(); // continue
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} else {
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token.content.append((char) ch);
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ch = reader.read(); // continue
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}
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}
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if (ignoreSurroundingSpaces) {
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trimTrailingSpaces(token.content);
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}
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return token;
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}
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/**
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* Returns the current line number
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* Greedily accepts \n, \r and \r\n This checker consumes silently the second control-character...
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*
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* @return the current line number
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* @return true if the given or next character is a line-terminator
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*/
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long getCurrentLineNumber() {
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return reader.getCurrentLineNumber();
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}
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boolean readEndOfLine(int ch) throws IOException {
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// check if we have \r\n...
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if (ch == CR && reader.lookAhead() == LF) {
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// note: does not change ch outside of this method!
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ch = reader.read();
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// Save the EOL state
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if (firstEol == null) {
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this.firstEol = Constants.CRLF;
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}
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}
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// save EOL state here.
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if (firstEol == null) {
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if (ch == LF) {
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this.firstEol = LF_STRING;
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} else if (ch == CR) {
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this.firstEol = CR_STRING;
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}
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}
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/**
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* Returns the current character position
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*
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* @return the current character position
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*/
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long getCharacterPosition() {
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return reader.getPosition();
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return ch == LF || ch == CR;
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}
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// TODO escape handling needs more work
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@ -369,93 +458,4 @@ final class Lexer implements Closeable {
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buffer.setLength(length);
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}
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}
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/**
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* Greedily accepts \n, \r and \r\n This checker consumes silently the second control-character...
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*
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* @return true if the given or next character is a line-terminator
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*/
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boolean readEndOfLine(int ch) throws IOException {
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// check if we have \r\n...
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if (ch == CR && reader.lookAhead() == LF) {
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// note: does not change ch outside of this method!
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ch = reader.read();
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// Save the EOL state
|
||||
if (firstEol == null) {
|
||||
this.firstEol = Constants.CRLF;
|
||||
}
|
||||
}
|
||||
// save EOL state here.
|
||||
if (firstEol == null) {
|
||||
if (ch == LF) {
|
||||
this.firstEol = LF_STRING;
|
||||
} else if (ch == CR) {
|
||||
this.firstEol = CR_STRING;
|
||||
}
|
||||
}
|
||||
|
||||
return ch == LF || ch == CR;
|
||||
}
|
||||
|
||||
boolean isClosed() {
|
||||
return reader.isClosed();
|
||||
}
|
||||
|
||||
/**
|
||||
* @return true if the given char is a whitespace character
|
||||
*/
|
||||
boolean isWhitespace(final int ch) {
|
||||
return !isDelimiter(ch) && Character.isWhitespace((char) ch);
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks if the current character represents the start of a line: a CR, LF or is at the start of the file.
|
||||
*
|
||||
* @param ch the character to check
|
||||
* @return true if the character is at the start of a line.
|
||||
*/
|
||||
boolean isStartOfLine(final int ch) {
|
||||
return ch == LF || ch == CR || ch == UNDEFINED;
|
||||
}
|
||||
|
||||
/**
|
||||
* @return true if the given character indicates end of file
|
||||
*/
|
||||
boolean isEndOfFile(final int ch) {
|
||||
return ch == END_OF_STREAM;
|
||||
}
|
||||
|
||||
boolean isDelimiter(final int ch) {
|
||||
return ch == delimiter;
|
||||
}
|
||||
|
||||
boolean isEscape(final int ch) {
|
||||
return ch == escape;
|
||||
}
|
||||
|
||||
boolean isQuoteChar(final int ch) {
|
||||
return ch == quoteChar;
|
||||
}
|
||||
|
||||
boolean isCommentStart(final int ch) {
|
||||
return ch == commentStart;
|
||||
}
|
||||
|
||||
private boolean isMetaChar(final int ch) {
|
||||
return ch == delimiter ||
|
||||
ch == escape ||
|
||||
ch == quoteChar ||
|
||||
ch == commentStart;
|
||||
}
|
||||
|
||||
/**
|
||||
* Closes resources.
|
||||
*
|
||||
* @throws IOException
|
||||
* If an I/O error occurs
|
||||
*/
|
||||
@Override
|
||||
public void close() throws IOException {
|
||||
reader.close();
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -26,9 +26,6 @@ import static org.apache.commons.csv.Token.Type.INVALID;
|
|||
*/
|
||||
final class Token {
|
||||
|
||||
/** length of the initial token (content-)buffer */
|
||||
private static final int INITIAL_TOKEN_LENGTH = 50;
|
||||
|
||||
enum Type {
|
||||
/** Token has no valid content, i.e. is in its initialized state. */
|
||||
INVALID,
|
||||
|
|
@ -46,6 +43,9 @@ final class Token {
|
|||
COMMENT
|
||||
}
|
||||
|
||||
/** length of the initial token (content-)buffer */
|
||||
private static final int INITIAL_TOKEN_LENGTH = 50;
|
||||
|
||||
/** Token type */
|
||||
Token.Type type = INVALID;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue