Package dk.netarkivet.heritrix3.monitor

Class AcceptLanguageParser

java.lang.Object

dk.netarkivet.heritrix3.monitor.AcceptLanguageParser

public class AcceptLanguageParser
extends Object

HTTP accept-language header state machine based parser. Example: "da, en-gb;q=0.8, en;q=0.7".

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AcceptLanguageParser.AcceptLanguage	Parsed language, country, locale and qvalue.
static class	AcceptLanguageParser.AcceptLanguageComparator

Field Summary

Fields

Modifier and Type	Field	Description
static AcceptLanguageParser.AcceptLanguageComparator	acceptLanguageComparator	Reusable comparator used to sort languages by their qvalue.
static int	S_COUNTRY	Country state.
static int	S_COUNTRY_SPC	Country parsed state.
static int	S_EQ	State equal.
static int	S_LANG	Language state.
static int	S_NAME	State name.
static int	S_NAME_SPC	State parsed name.
static int	S_SEMICOLON	Semicolon state.
static int	S_START_SPC	Start state.
static int	S_VALUE	State value.

Constructor Summary

Constructors

Constructor	Description
AcceptLanguageParser()

Method Summary

Modifier and Type	Method	Description
static List<AcceptLanguageParser.AcceptLanguage>	parseHeader(String acceptLanguageStr)	Parses a HTTP accept-language header string and returns a sorted list of valid languages.
static List<AcceptLanguageParser.AcceptLanguage>	parseHeader(javax.servlet.http.HttpServletRequest req)	Parses a HTTP accept-language header, if present, from the supplied HTTP request and returns a sorted list of valid languages.

Methods inherited from class java.lang.Object

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

Field Detail

S_START_SPC

public static final int S_START_SPC

Start state. Look for a language.

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Constant Field Values

S_LANG

public static final int S_LANG

Language state. Look for country, qvalue or start of next locale.

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Constant Field Values

S_COUNTRY

public static final int S_COUNTRY

Country state. Look for a country.

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Constant Field Values

S_COUNTRY_SPC

public static final int S_COUNTRY_SPC

Country parsed state. Look for qvalue or next locale.

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Constant Field Values

S_SEMICOLON

public static final int S_SEMICOLON

Semicolon state. Look for an optional qvalue.

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Constant Field Values

S_NAME

public static final int S_NAME

State name. Look for attribute name.

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Constant Field Values

S_NAME_SPC

public static final int S_NAME_SPC

State parsed name. Look for value or next attribute or next locale.

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Constant Field Values

S_EQ

public static final int S_EQ

State equal. Look for first value character or next attribute or next locale.

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Constant Field Values

S_VALUE

public static final int S_VALUE

State value. Look for the rest of the value and next attribute or next locale.

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Constant Field Values

acceptLanguageComparator

public static AcceptLanguageParser.AcceptLanguageComparator acceptLanguageComparator

Reusable comparator used to sort languages by their qvalue.

Constructor Detail

AcceptLanguageParser

public AcceptLanguageParser()

Method Detail

parseHeader

public static List<AcceptLanguageParser.AcceptLanguage> parseHeader(javax.servlet.http.HttpServletRequest req)

Parses a HTTP accept-language header, if present, from the supplied HTTP request and returns a sorted list of valid languages. Languages are sorted by their qvalue.

Parameters:

acceptLanguageStr - accept language header string from a HTTP request

Returns:

List of valid languages sorted by their qvalue

parseHeader

public static List<AcceptLanguageParser.AcceptLanguage> parseHeader(String acceptLanguageStr)

Parses a HTTP accept-language header string and returns a sorted list of valid languages. Languages are sorted by their qvalue.

Parameters:

acceptLanguageStr - accept language header string from a HTTP request

Returns:

List of valid languages sorted by their qvalue