/
FileScanner.java
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/
FileScanner.java
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package net.ME1312.SubServers.Bungee.Library;
import net.ME1312.Galaxi.Library.Util;
import java.io.*;
import java.lang.reflect.InvocationTargetException;
import java.util.*;
import java.util.regex.Pattern;
/**
* File Scanner Base Class
*/
public abstract class FileScanner {
/**
* Scan a Directory
*
* @param dir Directory
* @param whitelist File Whitelist
*/
protected void scan(File dir, String... whitelist) throws IOException {
List<String> files;
try {
files = Util.reflect(Util.class.getDeclaredMethod("zipsearch", File.class, File.class), null, dir, dir);
} catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
throw new IllegalStateException("Cannot access zipsearch()", e);
}
if (files.size() <= 0 || whitelist.length <= 0)
return;
boolean csfs = false;
{
long stamp = Math.round(Math.random() * 100000);
File test1 = new File(dir, '.' + stamp + ".ss_fsc");
File test2 = new File(dir, '.' + stamp + ".SS_FSC");
test1.createNewFile();
if (test2.createNewFile()) {
csfs = true;
test2.delete();
}
test1.delete();
}
LinkedHashMap<Pattern, Boolean> rules = new LinkedHashMap<Pattern, Boolean>();
for (String entry : whitelist) {
boolean mode = !entry.startsWith("!");
if (!mode) entry = entry.substring(1);
String pattern;
if (!entry.startsWith("%")) {
if (entry.startsWith("./"))
entry = entry.substring(1);
StringBuilder rule = new StringBuilder();
if (entry.startsWith("**")) {
entry = entry.substring(2);
rule.append("^.*");
} else if (entry.startsWith("/")) {
rule.append("^");
}
boolean greedyEnding = false;
if (entry.endsWith("**")) {
entry = entry.substring(0, entry.length() - 2);
greedyEnding = true;
} else if (entry.endsWith("/")) {
greedyEnding = true;
}
StringBuilder literal = new StringBuilder();
for (PrimitiveIterator.OfInt i = entry.codePoints().iterator(); i.hasNext(); ) {
int c = i.next();
if ((c == '*' || c == '?' || c == '[') && literal.length() > 0) {
rule.append(Pattern.quote(literal.toString()));
literal = new StringBuilder();
}
switch (c) {
case '\\':
if (i.hasNext()) c = i.next();
literal.appendCodePoint(c);
case '[':
for (boolean escaped = false; i.hasNext() && (c != ']' || escaped); c = i.next()) {
if (c == '\\') escaped = !escaped;
else escaped = false;
literal.appendCodePoint(c);
}
if (c == ']' && literal.length() > 1) {
literal.appendCodePoint(c);
rule.append(literal.toString());
}
literal = new StringBuilder();
break;
case '*':
rule.append("[^/]+");
break;
case '?':
rule.append("[^/]");
break;
default:
literal.appendCodePoint(c);
break;
}
}
if (literal.length() > 0)
rule.append(Pattern.quote(literal.toString()));
if (greedyEnding)
rule.append(".*");
rule.append("$");
pattern = rule.toString();
} else {
pattern = entry.substring(1);
}
if (csfs) rules.put(Pattern.compile(pattern), mode);
else rules.put(Pattern.compile(pattern, Pattern.CASE_INSENSITIVE), mode);
}
for (String file : files) {
boolean act = false;
for (Map.Entry<Pattern, Boolean> rule : rules.entrySet()) {
if (rule.getKey().matcher('/' + file.replace(File.separatorChar, '/')).find()) act = rule.getValue();
}
if (act) act(dir, file);
}
}
/**
* Perform an action on an included file
*
* @param dir Parent Directory
* @param name File Name
*/
protected abstract void act(File dir, String name) throws IOException;
}