Chenjp commented on PR #820:
URL: https://github.com/apache/tomcat/pull/820#issuecomment-2665144518
Updated.
Incorrect results of current source code V0 received:
```
V0: Case sensitivity of 'D:\case-sensitivity-verification' is false
V1: Case sensitivity of 'D:\case-sensitivity-verification' is false
V0: Case sensitivity of
'D:\case-sensitivity-verification\case-insensitive-dir' is false
V1: Case sensitivity of
'D:\case-sensitivity-verification\case-insensitive-dir' is false
V0: Case sensitivity of
'D:\case-sensitivity-verification\case-sensitive-dir' is false
V1: Case sensitivity of
'D:\case-sensitivity-verification\case-sensitive-dir' is true
V0: Case sensitivity of
'D:\case-sensitivity-verification\case-sensitive-dir\case-insensitive-dir' is
true
V1: Case sensitivity of
'D:\case-sensitivity-verification\case-sensitive-dir\case-insensitive-dir' is
false
V0: Case sensitivity of 'D:\case-sensitivity-verification\大小写不敏感目录' is false
V1: Case sensitivity of 'D:\case-sensitivity-verification\大小写不敏感目录' is false
V0: Case sensitivity of 'D:\case-sensitivity-verification\大小写敏感目录' is false
V1: Case sensitivity of 'D:\case-sensitivity-verification\大小写敏感目录' is true
```
See java source code:
```java
import java.io.File;
import java.io.IOException;
import java.util.Locale;
/**
*
*/
public class FileSystemCaseSensitivity {
/**
* @param args
*/
public static void main(String[] args) throws IOException {
printCaseSensitivity(new File("d:\\case-sensitivity-verification"));
}
public static void printCaseSensitivity(File dir) throws IOException {
if (dir.isDirectory()) {
System.out.println(
String.format("V0: Case sensitivity of '%s' is %b",
dir.getCanonicalPath(), isCaseSensitive0(dir)));
System.out.println(
String.format("V1: Case sensitivity of '%s' is %b",
dir.getCanonicalPath(), isCaseSensitive1(dir)));
for (File subdir : dir.listFiles()) {
printCaseSensitivity(subdir);
}
}
}
public static boolean isCaseSensitive0(File dir) {
try {
String canonicalPath = dir.getCanonicalPath();
File upper = new File(canonicalPath.toUpperCase(Locale.ENGLISH));
if (!canonicalPath.equals(upper.getCanonicalPath())) {
return true;
}
File lower = new File(canonicalPath.toLowerCase(Locale.ENGLISH));
if (!canonicalPath.equals(lower.getCanonicalPath())) {
return true;
}
/* Both upper and lower case versions of the current fileBase
have the same canonical path so the file
* system must be case insensitive. */
} catch (IOException ioe) {
ioe.printStackTrace();
}
return false;
}
public static boolean isCaseSensitive1(File dir) {
try {
// Some file system (e.g. windows) treat files and directories
as case insensitive by default, and also
// support
// setting case sensitivity per directory. Then we have to
handle case sensitivity for each directory.
// Ensure file path contain ENGLISH string, otherwise its upper
and lower maybe are same.
dir = dir.getCanonicalFile();
String lastPartName = ".Tomcat_cs_verify";
File testFile = new File(dir, lastPartName);
if (!testFile.exists()) {
if (testFile.createNewFile()) {
testFile.deleteOnExit();
} else {
throw new IOException();
}
}
String canonicalPath = testFile.getCanonicalPath();
File upper = new File(dir,
lastPartName.toUpperCase(Locale.ENGLISH));
if (!upper.getCanonicalPath().equals(canonicalPath)) {
return true;
}
File lower = new File(dir,
lastPartName.toLowerCase(Locale.ENGLISH));
if (!lower.getCanonicalPath().equals(canonicalPath)) {
return true;
}
/* Both upper and lower case versions of the current fileBase
have the same canonical path so the file
* system must be case insensitive. */
} catch (IOException ioe) {
ioe.printStackTrace();
}
return false;
}
}
```
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