src/me/topchetoeu/jscript/filesystem/EntryType.java

@@ -1,7 +1,13 @@
 package me.topchetoeu.jscript.filesystem;
 
 public enum EntryType {
-    NONE,
+    NONE("none"),
-    FILE,
+    FILE("file"),
-    FOLDER,
+    FOLDER("folder");
+
+    public final String name;
+
+    private EntryType(String name) {
+        this.name = name;
+    }
 }

src/me/topchetoeu/jscript/filesystem/File.java

@@ -1,27 +1,39 @@
 package me.topchetoeu.jscript.filesystem;
 
-import java.io.IOException;
-
 public interface File {
-    int read() throws IOException, InterruptedException;
+    int read(byte[] buff);
-    boolean write(byte val) throws IOException, InterruptedException;
+    void write(byte[] buff);
-    long tell() throws IOException, InterruptedException;
+    long getPtr();
-    void seek(long offset, int pos) throws IOException, InterruptedException;
+    void setPtr(long offset, int pos);
-    void close() throws IOException, InterruptedException;
+    void close();
-    Permissions perms();
+    Mode mode();
 
-    default String readToString() throws IOException, InterruptedException {
+    default String readToString() {
-        seek(0, 2);
+        setPtr(0, 2);
-        long len = tell();
+        long len = getPtr();
         if (len < 0) return null;
 
-        seek(0, 0);
+        setPtr(0, 0);
-        byte[] res = new byte[(int)len];
 
-        for (var i = 0; i < len; i++) {
+        byte[] res = new byte[(int)len];
-            res[i] = (byte)read();
+        read(res);
-        }
 
         return new String(res);
     }
+    default String readLine() {
+        var res = new Buffer(new byte[0]);
+        var buff = new byte[1];
+
+        while (true) {
+            if (read(buff) == 0) {
+                if (res.length() == 0) return null;
+                else break;
+            }
+
+            if (buff[0] == '\n') break;
+
+            res.write(res.length(), buff);
+        }
+        return new String(res.data());
+    }
 }

src/me/topchetoeu/jscript/filesystem/FileStat.java

@@ -0,0 +1,11 @@
+package me.topchetoeu.jscript.filesystem;
+
+public class FileStat {
+    public final Mode mode;
+    public final EntryType type;
+
+    public FileStat(Mode mode, EntryType type) {
+        this.mode = mode;
+        this.type = type;
+    }
+}

src/me/topchetoeu/jscript/filesystem/Filesystem.java

@@ -1,10 +1,7 @@
 package me.topchetoeu.jscript.filesystem;
 
-import java.io.IOException;
-
 public interface Filesystem {
-    File open(String path) throws IOException, InterruptedException;
+    File open(String path, Mode mode) throws FilesystemException;
-    boolean mkdir(String path) throws IOException, InterruptedException;
+    void create(String path, EntryType type) throws FilesystemException;
-    EntryType type(String path) throws IOException, InterruptedException;
+    FileStat stat(String path) throws FilesystemException;
-    boolean rm(String path) throws IOException, InterruptedException;
+}
-}

src/me/topchetoeu/jscript/filesystem/FilesystemException.java

@@ -0,0 +1,55 @@
+package me.topchetoeu.jscript.filesystem;
+
+import me.topchetoeu.jscript.engine.values.Values;
+import me.topchetoeu.jscript.exceptions.EngineException;
+
+public class FilesystemException extends RuntimeException {
+    public static enum FSCode {
+        DOESNT_EXIST(0x1),
+        NOT_FILE(0x2),
+        NOT_FOLDER(0x3),
+        NO_PERMISSIONS_R(0x4),
+        NO_PERMISSIONS_RW(0x5),
+        FOLDER_NOT_EMPTY(0x6),
+        ALREADY_EXISTS(0x7),
+        FOLDER_EXISTS(0x8);
+
+        public final int code;
+
+        private FSCode(int code) { this.code = code; }
+    }
+
+    public static final String[] MESSAGES = {
+        "How did we get here?",
+        "The file or folder '%s' doesn't exist or is inaccessible.",
+        "'%s' is not a file",
+        "'%s' is not a folder",
+        "No permissions to read '%s'",
+        "No permissions to write '%s'",
+        "Can't delete '%s', since it is a full folder.",
+        "'%s' already exists."
+    };
+
+    public final String message, filename;
+    public final FSCode code;
+
+    public FilesystemException(String message, String filename, FSCode code) {
+        super(code + ": " + message.formatted(filename));
+        this.message = message;
+        this.code = code;
+        this.filename = filename;
+    }
+    public FilesystemException(String filename, FSCode code) {
+        super(code + ": " + MESSAGES[code.code].formatted(filename));
+        this.message = MESSAGES[code.code];
+        this.code = code;
+        this.filename = filename;
+    }
+
+    public EngineException toEngineException() {
+        var res = EngineException.ofError("IOError", getMessage());
+        Values.setMember(null, res.value, "code", code);
+        Values.setMember(null, res.value, "filename", filename.toString());
+        return res;
+    }
+}

src/me/topchetoeu/jscript/filesystem/InaccessibleFile.java

@@ -1,35 +0,0 @@
-package me.topchetoeu.jscript.filesystem;
-
-import java.io.IOException;
-
-public class InaccessibleFile implements File {
-    public static final InaccessibleFile INSTANCE = new InaccessibleFile();
-
-    @Override
-    public int read() throws IOException, InterruptedException {
-        return -1;
-    }
-
-    @Override
-    public boolean write(byte val) throws IOException, InterruptedException {
-        return false;
-    }
-
-    @Override
-    public long tell() throws IOException, InterruptedException {
-        return 0;
-    }
-
-    @Override
-    public void seek(long offset, int pos) throws IOException, InterruptedException { }
-
-    @Override
-    public void close() throws IOException, InterruptedException { }
-
-    @Override
-    public Permissions perms() {
-        return Permissions.NONE;
-    }
-
-    private InaccessibleFile() { }
-}

src/me/topchetoeu/jscript/filesystem/Mode.java

@@ -0,0 +1,31 @@
+package me.topchetoeu.jscript.filesystem;
+
+public enum Mode {
+    NONE("", false, false),
+    READ("r", true, false),
+    READ_WRITE("rw", true, true);
+
+    public final String name;
+    public final boolean readable;
+    public final boolean writable;
+
+    public Mode intersect(Mode other) {
+        if (this == NONE || other == NONE) return NONE;
+        if (this == READ_WRITE && other == READ_WRITE) return READ_WRITE;
+        return READ;
+    }
+
+    private Mode(String mode, boolean r, boolean w) {
+        this.name = mode;
+        this.readable = r;
+        this.writable = w;
+    }
+
+    public static Mode parse(String mode) {
+        switch (mode) {
+            case "r": return READ;
+            case "rw": return READ_WRITE;
+            default: return NONE;
+        }
+    }
+}

src/me/topchetoeu/jscript/filesystem/Permissions.java

@@ -1,17 +0,0 @@
-package me.topchetoeu.jscript.filesystem;
-
-public enum Permissions {
-    NONE("", false, false),
-    READ("r", true, false),
-    READ_WRITE("rw", true, true);
-
-    public final String readMode;
-    public final boolean readable;
-    public final boolean writable;
-
-    private Permissions(String mode, boolean r, boolean w) {
-        this.readMode = mode;
-        this.readable = r;
-        this.writable = w;
-    }
-}

src/me/topchetoeu/jscript/filesystem/PhysicalFile.java

@@ -1,50 +1,62 @@
 package me.topchetoeu.jscript.filesystem;
 
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.RandomAccessFile;
 
+import me.topchetoeu.jscript.filesystem.FilesystemException.FSCode;
+
 public class PhysicalFile implements File {
+    private String filename;
     private RandomAccessFile file;
-    private Permissions perms;
+    private Mode perms;
 
     @Override
-    public int read() throws IOException, InterruptedException {
+    public int read(byte[] buff) {
-        if (file == null || !perms.readable) return -1;
+        if (file == null || !perms.readable) throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_R);
-        else return file.read();
+        else try { return file.read(buff); }
+        catch (IOException e) { throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_R); }
+    }
+    @Override
+    public void write(byte[] buff) {
+        if (file == null || !perms.writable) throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_RW);
+        else try { file.write(buff); }
+        catch (IOException e) { throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_RW); }
     }
 
     @Override
-    public boolean write(byte val) throws IOException, InterruptedException {
+    public long getPtr() {
-        if (file == null || !perms.writable) return false;
+        if (file == null || !perms.readable) throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_R);
-        file.write(val);
+        else try { return file.getFilePointer(); }
-        return true;
+        catch (IOException e) { throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_R); }
+    }
+    @Override
+    public void setPtr(long offset, int pos) {
+        if (file == null || !perms.readable) throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_R);
+
+        try {
+            if (pos == 1) pos += file.getFilePointer();
+            else if (pos == 2) pos += file.length();
+            file.seek(pos);
+        }
+        catch (IOException e) { throw new FilesystemException(filename, FSCode.NO_PERMISSIONS_R); }
     }
 
     @Override
-    public long tell() throws IOException, InterruptedException {
+    public void close() {
-        if (file == null) return 0;
-        return file.getFilePointer();
-    }
-    @Override
-    public void seek(long offset, int pos) throws IOException, InterruptedException {
         if (file == null) return;
-        if (pos == 0) file.seek(pos);
+        try { file.close(); }
-        else if (pos == 1) file.seek(file.getFilePointer() + pos);
+        catch (IOException e) {} // SHUT
-        else if (pos == 2) file.seek(file.length() + pos);
+        file = null;
+        perms = Mode.NONE;
     }
-
     @Override
-    public void close() throws IOException, InterruptedException {
+    public Mode mode() { return perms; }
-        if (file == null) return;
-        file.close();
-    }
 
-    @Override
+    public PhysicalFile(String path, Mode mode) throws FileNotFoundException {
-    public Permissions perms() { return perms; }
+        if (mode == Mode.NONE) file = null;
-    
+        else try { file = new RandomAccessFile(path, mode.name); }
-    public PhysicalFile(String path, Permissions mode) throws IOException {
+        catch (FileNotFoundException e) { throw new FilesystemException(filename, FSCode.DOESNT_EXIST); }
-        if (mode == Permissions.NONE) file = null;
-        else file = new RandomAccessFile(path, mode.readMode);
 
         perms = mode;
     }

src/me/topchetoeu/jscript/filesystem/PhysicalFilesystem.java

@@ -1,74 +1,75 @@
 package me.topchetoeu.jscript.filesystem;
 
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.nio.file.Path;
 
+import me.topchetoeu.jscript.filesystem.FilesystemException.FSCode;
+
 public class PhysicalFilesystem implements Filesystem {
     public final Path root;
 
-    private Permissions getPerms(Path path) {
-        var file = path.toFile();
-        if (!path.startsWith(root)) return Permissions.NONE;
-        if (file.canRead() && file.canWrite()) return Permissions.READ_WRITE;
-        if (file.canRead()) return Permissions.READ;
-
-        return Permissions.NONE;
-    }
     private Path getPath(String name) {
-        return root.resolve(name);
+        return root.resolve(name.replace("\\", "/")).normalize();
+    }
+
+    private void checkMode(Path path, Mode mode) {
+        if (!path.startsWith(root)) throw new FilesystemException(path.toString(), FSCode.NO_PERMISSIONS_R);
+        if (mode.readable && !path.toFile().canRead()) throw new FilesystemException(path.toString(), FSCode.NO_PERMISSIONS_R);
+        if (mode.writable && !path.toFile().canWrite()) throw new FilesystemException(path.toString(), FSCode.NO_PERMISSIONS_RW);
     }
 
     @Override
-    public File open(String path) throws IOException, InterruptedException {
+    public File open(String path, Mode perms) {
-        var _path = root.resolve(path);
+        var _path = getPath(path);
-
-        var perms = getPerms(_path);
-        if (perms == Permissions.NONE) return InaccessibleFile.INSTANCE;
-
         var f = _path.toFile();
 
-        if (f.isDirectory()) {
+        checkMode(_path, perms);
-            var res = new StringBuilder();
 
-            for (var child : f.listFiles()) res.append(child.toString()).append('\n');
 
-            return new MemoryFile(res.toString().getBytes(), Permissions.READ);
+        if (f.isDirectory()) return MemoryFile.fromFileList(path, f.listFiles());
+        else try { return new PhysicalFile(path, perms); }
+        catch (FileNotFoundException e) { throw new FilesystemException(_path.toString(), FSCode.DOESNT_EXIST); }
+    }
+
+    @Override
+    public void create(String path, EntryType type) {
+        var _path = getPath(path);
+        var f = _path.toFile();
+
+        checkMode(_path, Mode.READ_WRITE);
+        switch (type) {
+            case FILE:
+                try {
+                    if (!f.createNewFile()) throw new FilesystemException(_path.toString(), FSCode.ALREADY_EXISTS);
+                    else break;
+                } 
+                catch (IOException e) { throw new FilesystemException(_path.toString(), FSCode.NO_PERMISSIONS_RW); }
+            case FOLDER:
+                if (!f.mkdir()) throw new FilesystemException(_path.toString(), FSCode.ALREADY_EXISTS);
+                else break;
+            case NONE:
+            default:
+                if (!f.delete()) throw new FilesystemException(_path.toString(), FSCode.DOESNT_EXIST);
+                else break;
         }
-        else return new PhysicalFile(path, perms);
     }
 
     @Override
-    public boolean mkdir(String path) throws IOException, InterruptedException {
+    public FileStat stat(String path) {
         var _path = getPath(path);
-        var perms = getPerms(_path);
         var f = _path.toFile();
 
-        if (!perms.writable) return false;
+        if (f.exists()) throw new FilesystemException(_path.toString(), FSCode.DOESNT_EXIST);
-        else return f.mkdir();
+        checkMode(_path, Mode.READ);
-    }
 
-    @Override
+        return new FileStat(
-    public EntryType type(String path) throws IOException, InterruptedException {
+            f.canWrite() ? Mode.READ_WRITE : Mode.READ,
-        var _path = getPath(path);
+            f.isFile() ? EntryType.FILE : EntryType.FOLDER
-        var perms = getPerms(_path);
+        );
-        var f = _path.toFile();
-
-        if (perms == Permissions.NONE) return EntryType.NONE;
-        else if (f.isFile()) return EntryType.FILE;
-        else return EntryType.FOLDER;
-    }
-
-    @Override
-    public boolean rm(String path) throws IOException, InterruptedException {
-        var _path = getPath(path);
-        var perms = getPerms(_path);
-        var f = _path.toFile();
-
-        if (!perms.writable) return false;
-        else return f.delete();
     }
 
     public PhysicalFilesystem(Path root) {
-        this.root = root;
+        this.root = root.toAbsolutePath().normalize();
     }
 }