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8287237: (fs) Files.probeContentType returns null if filename contains hash mark on Linux

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Reviewed-by: rriggs, jpai, vtewari
This commit is contained in:
Brian Burkhalter 2022-06-01 15:15:53 +00:00
parent 774928f944
commit 8071b2311c
2 changed files with 64 additions and 26 deletions
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69
src/java.base/share/classes/sun/net/www/MimeTable.java
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@ -27,21 +27,27 @@ package sun.net.www;
import jdk.internal.util.StaticProperty;
import java.io.*;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.IOException;
import java.net.FileNameMap;
import java.util.Hashtable;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Properties;
import java.util.StringTokenizer;
public class MimeTable implements FileNameMap {
/** Hash mark introducing a URI fragment */
private static final int HASH_MARK = '#';
/** Keyed by content type, returns MimeEntries */
private Hashtable<String, MimeEntry> entries
= new Hashtable<>();
private Hashtable<String, MimeEntry> entries = new Hashtable<>();
/** Keyed by file extension (with the .), returns MimeEntries */
private Hashtable<String, MimeEntry> extensionMap
= new Hashtable<>();
private Hashtable<String, MimeEntry> extensionMap = new Hashtable<>();
// Will be reset if in the platform-specific data file
@SuppressWarnings("removal")
@ -84,9 +90,6 @@ public class MimeTable implements FileNameMap {
return DefaultInstanceHolder.defaultInstance;
}
/**
*
*/
public static FileNameMap loadTable() {
MimeTable mt = getDefaultTable();
return mt;
@ -151,23 +154,15 @@ public class MimeTable implements FileNameMap {
}
/**
* Locate a MimeEntry by the file extension that has been associated
* with it. Parses general file names, and URLs.
* Extracts the file extension and uses it to look up the entry.
*/
public MimeEntry findByFileName(String fname) {
String ext = "";
int i = fname.lastIndexOf('#');
if (i > 0) {
fname = fname.substring(0, i - 1);
}
i = fname.lastIndexOf('.');
private MimeEntry findViaFileExtension(String fname) {
int i = fname.lastIndexOf('.');
// REMIND: OS specific delimiters appear here
i = Math.max(i, fname.lastIndexOf('/'));
i = Math.max(i, fname.lastIndexOf('?'));
String ext = "";
if (i != -1 && fname.charAt(i) == '.') {
ext = fname.substring(i).toLowerCase();
}
@ -175,6 +170,38 @@ public class MimeTable implements FileNameMap {
return findByExt(ext);
}
/**
* Locate a MimeEntry by its associated file extension.
* Parses general file names, and URLs.
*
* @param fname the file name
*
* @return the MIME entry associated with the file name or {@code null}
*/
public MimeEntry findByFileName(String fname) {
MimeEntry entry = null;
// If an optional fragment introduced by a hash mark is
// present, then strip it and use the prefix
int hashIndex = fname.lastIndexOf(HASH_MARK);
if (hashIndex > 0) {
entry = findViaFileExtension(fname.substring(0, hashIndex));
if (entry != null) {
return entry;
}
}
assert entry == null;
// If either no optional fragment was present, or the entry was not
// found with the fragment stripped, then try again with the full name
if (entry == null) {
entry = findViaFileExtension(fname);
}
return entry;
}
/**
* Locate a MimeEntry by the file extension that has been associated
* with it.