This commit is contained in:
Ziver Koc 2010-10-27 18:02:44 +00:00
parent 51e9da7c9b
commit ca8f6278b1
30 changed files with 88 additions and 79 deletions

View file

@ -1,288 +0,0 @@
package zutil;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.regex.Matcher;
/**
* File path utilities
*
* @author Ziver
*/
public class FileUtil {
/**
* Returns a String with a relative path from the given path
*
* @param file is the file to get a relative path from
* @param path is the path
* @return A String with a relative path
*/
public static String relativePath(File file, String path){
String absolute = file.getAbsolutePath();
String tmpPath = path.replaceAll(
"[/\\\\]",
Matcher.quoteReplacement(File.separator));
String relative = absolute.substring(
absolute.indexOf(tmpPath)+path.length(),
absolute.length());
return relative;
}
/**
* Returns the File object for the given file.
* Can not point to files in JAR files.
*
* @param path is the path to the file (no / if not absolute path)
* @return A File object for the file
*/
public static File find(String path){
try {
File file = new File(path);
if(file!=null && file.exists()){
return file;
}
return new File(findURL(path).toURI());
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* Returns the URL to the given file
*
* @param path is the path to the file (no / if not absolute path)
* @return A URL object for the file
* @throws URISyntaxException
*/
public static URL findURL(String path){
return Thread.currentThread().getContextClassLoader().getResource(path);
}
/**
* Returns a InputStream from the path
*
* @param path is the path to the file (no / if not absolute path)
* @return A InputStream object for the file
*/
public static InputStream getInputStream(String path){
try {
File file = new File(path);
if(file!=null && file.exists()){
return new BufferedInputStream( new FileInputStream( file ) );
}
return Thread.currentThread().getContextClassLoader()
.getResourceAsStream(path);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* Reads and returns the content of a file as a String.
* Or use FileUtils.readFileToString(file);
*
* @param file is the file to read
* @return The file content
* @throws IOException
*/
public static String getFileContent(File file) throws IOException{
return getContent( new FileInputStream(file) );
}
/**
* Reads and returns the content of a file as a String.
* Or use FileUtils.readFileToString(file);
*
* @param url is the url to read
* @return The file content
* @throws IOException
*/
public static String getContent(URL url) throws IOException{
return getContent( url.openStream() );
}
/**
* Reads and returns the content of a file as a String.
* Or use FileUtils.readFileToString(file);
*
* @param stream is the file stream to read
* @return The file content
* @throws IOException
*/
public static String getContent(InputStream stream) throws IOException{
BufferedReader in = new BufferedReader(new InputStreamReader(stream));
StringBuffer ret = new StringBuffer();
int tmp;
while((tmp=in.read()) != -1){
ret.append((char)tmp);
}
in.close();
return ret.toString();
}
/**
* Cache for the search functions
*/
private static HashMap<SearchItem,List<File>> search_cache = new HashMap<SearchItem,List<File>>();
/**
* An Cache Item class to identify different cached items
* @author Ziver
*/
private static class SearchItem{
private File dir;
private boolean folders;
private int recurse;
protected SearchItem(File dir, boolean folders, int recurse){
this.dir = dir;
this.folders = folders;
this.recurse = recurse;
}
public boolean equals(Object o){
if(o!=null && o instanceof SearchItem){
SearchItem si = (SearchItem)o;
return dir.equals(si.dir) && folders == si.folders && recurse == si.recurse;
}
return false;
}
public int hashCode(){
int hash = 133;
hash = 23 * hash + dir.hashCode();
hash = 23 * hash + (folders ? 1 : 0);
hash = 23 * hash + recurse;
return 0;
}
}
/**
* Same as search(File dir)
* but is caches the result to be used next time this function is called
* with the same parameters.
*/
public static List<File> cachedSearch(File dir){
return cachedSearch(dir, new LinkedList<File>(), true);
}
/**
* Same as search(File dir, List<File> fileList, boolean recursive)
* but is caches the result to be used next time this function is called
* with the same parameters.
*/
public static List<File> cachedSearch(File dir, List<File> fileList, boolean recursive){
return cachedSearch(dir, new LinkedList<File>(), false, (recursive ? Integer.MAX_VALUE : 0));
}
/**
* Same as search(File dir, List<File> fileList, boolean folders, int recurse)
* but is caches the result to be used next time this function is called
* with the same parameters.
*/
public static List<File> cachedSearch(File dir, List<File> fileList, boolean folders, int recurse){
SearchItem si = new SearchItem(dir, folders, recurse);
if( search_cache.containsKey(si) ){
fileList.addAll( search_cache.get(si) );
return fileList;
}
search(dir, fileList, folders, recurse);
search_cache.put(si, fileList);
return fileList;
}
/**
* Returns a List with all the files in a folder and sub folders
*
* @param dir is the directory to search in
* @return The List with the files
*/
public static List<File> search(File dir){
return search(dir, new LinkedList<File>(), true);
}
/**
* Returns a ArrayList with all the files in a folder and sub folders
*
* @param dir is the directory to search in
* @param fileList is the List to add the files to
* @param recursive is if the method should search the sub directories to.
* @return A List with the files
*/
public static List<File> search(File dir, List<File> fileList, boolean recursive){
return search(dir, new LinkedList<File>(), false, (recursive ? Integer.MAX_VALUE : 0));
}
/**
* Returns a ArrayList with all the files in a folder and sub folders
*
* @param dir is the directory to search in
* @param fileList is the List to add the files to
* @param folders is if the method should add the folders to the List
* @param recurse is how many times it should recurse into folders
* @return A List with the files and/or folders
*/
public static List<File> search(File dir, List<File> fileList, boolean folders, int recurse){
if(recurse<0)
return fileList;
--recurse;
if(folders){
MultiPrintStream.out.println("Dir Found : "+dir);
fileList.add( dir );
}
File file;
String[] temp = dir.list();
if(temp != null){
for(int i=0; i<temp.length ;i++){
file = new File(dir.getPath()+File.separator+temp[i]);
if(file.isDirectory()){
search(new File(dir.getPath()+File.separator+temp[i]+File.separator), fileList, folders, recurse);
}
else if(file.isFile()){
MultiPrintStream.out.println("File Found: "+file);
fileList.add(file);
}
}
}
return fileList;
}
/**
* Returns the extension of the file
*
* @param file is the file
* @return The extension
*/
public static String fileExtension(File file){
return fileExtension(file.getName());
}
/**
* Returns the extension of the file
*
* @param file is the file
* @return The extension
*/
public static String fileExtension(String file){
if(file.lastIndexOf(".")==-1)
return "";
return file.substring(file.lastIndexOf(".")+1,file.length());
}
}