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sun.nio.fs

pack-priv Class MimeTypesFileTypeDetector

Class Inheritance

extends AbstractFileTypeDetector

Imports

java.io.IOException, java.nio.charset.Charset, java.nio.file.Files, .Path, java.util.Collections, .HashMap, .List, .Map, java.util.regex.Matcher, .Pattern

File type detector that uses a file extension to look up its MIME type based on a mime.types file.

Field Summary

Modifier and Type	Field and Description
private volatile boolean	loaded
private Map<String, String>	mimeTypeMap
private final Path	mimeTypesFile

Constructor Summary

Access	Constructor and Description
public	MimeTypesFileTypeDetector(Path filePath)

Method Summary

Modifier and Type	Method and Description
protected String	implProbeContentType(Path path) Implements abstract sun.nio.fs.AbstractFileTypeDetector.implProbeContentType. Probes the given file to guess its content type.
private void	loadMimeTypes() Parse the mime types file, and store the type-extension mappings into mimeTypeMap.
private void	parseMimeEntry(String entry) Parse a mime-types entry, which can have the following formats.
private void	putIfAbsent(String key, String value)

Inherited from sun.nio.fs.AbstractFileTypeDetector:: getExtension probeContentType

Field Detail

loaded	back to summary
private volatile boolean loaded

mimeTypeMap	back to summary
private Map<String, String> mimeTypeMap

mimeTypesFile	back to summary
private final Path mimeTypesFile

Constructor Detail

MimeTypesFileTypeDetector	back to summary
public MimeTypesFileTypeDetector(Path filePath)

Method Detail

implProbeContentType

back to summary

protected String implProbeContentType(Path path)

Implements abstract sun.nio.fs.AbstractFileTypeDetector.implProbeContentType.

Doc from sun.nio.fs.AbstractFileTypeDetector.implProbeContentType.

Probes the given file to guess its content type.

Annotations

@Override

loadMimeTypes	back to summary
private void loadMimeTypes() Parse the mime types file, and store the type-extension mappings into mimeTypeMap. The mime types file is not loaded until the first probe to achieve the lazy initialization. It adopts double-checked locking optimization to reduce the locking overhead.

parseMimeEntry	back to summary
private void parseMimeEntry(String entry) Parse a mime-types entry, which can have the following formats. 1) Simple space-delimited format image/jpeg jpeg jpg jpe JPG 2) Netscape key-value pair format type=application/x-java-jnlp-file desc="Java Web Start" exts="jnlp" or type=text/html exts=htm,html

putIfAbsent	back to summary
private void putIfAbsent(String key, String value)