Added FileNativeUtils class (for Linux, Windows and Mac)

Provides the following native methods:
- chmod
- link
- symlink

arduino-core/src/cc/arduino/os/FileNativeUtils.java

@@ -0,0 +1,91 @@
+/*
+ * This file is part of Arduino.
+ *
+ * Copyright 2014 Arduino LLC (http://www.arduino.cc/)
+ *
+ * Arduino is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ */
+package cc.arduino.os;
+
+import java.io.File;
+import java.io.IOException;
+
+import cc.arduino.os.linux.LinuxFileNativeUtils;
+import cc.arduino.os.macos.MacOSFileNativeUtils;
+import cc.arduino.os.windows.WindowsFileNativeUtils;
+import processing.app.helpers.OSUtils;
+
+public class FileNativeUtils {
+
+  /**
+   * Change file access permissions (UNIX). If the underlying filesystem doesn't
+   * support UNIX permission then the command is ignored.
+   * 
+   * @param file
+   * @param mode
+   * @throws IOException
+   */
+  public static void chmod(File file, int mode) throws IOException {
+    if (OSUtils.isLinux())
+      LinuxFileNativeUtils.chmod(file, mode);
+    if (OSUtils.isMacOS())
+      MacOSFileNativeUtils.chmod(file, mode);
+    if (OSUtils.isWindows())
+      WindowsFileNativeUtils.chmod(file, mode);
+  }
+
+  /**
+   * Create a hard link from <b>oldFile</b> to <b>newFile</b>. If the underlying
+   * filesystem doesn't support hard links then the command is ignored.
+   * 
+   * @param oldFile
+   * @param newFile
+   * @throws IOException
+   */
+  public static void link(File oldFile, File newFile) throws IOException {
+    if (OSUtils.isLinux())
+      LinuxFileNativeUtils.link(oldFile, newFile);
+    if (OSUtils.isMacOS())
+      MacOSFileNativeUtils.link(oldFile, newFile);
+    if (OSUtils.isWindows())
+      WindowsFileNativeUtils.link(oldFile, newFile);
+  }
+
+  /**
+   * Create a symlink link from <b>oldFile</b> to <b>newFile</b>. If the
+   * underlying filesystem doesn't support symlinks then the command is ignored.
+   * 
+   * @param oldFile
+   * @param newFile
+   * @throws IOException
+   */
+  public static void symlink(File oldFile, File newFile) throws IOException {
+    if (OSUtils.isLinux())
+      LinuxFileNativeUtils.symlink(oldFile, newFile);
+    if (OSUtils.isMacOS())
+      MacOSFileNativeUtils.symlink(oldFile, newFile);
+    if (OSUtils.isWindows())
+      WindowsFileNativeUtils.symlink(oldFile, newFile);
+  }
+}

arduino-core/src/cc/arduino/os/linux/LibCNative.java

@@ -0,0 +1,52 @@
+/*
+ * This file is part of Arduino.
+ *
+ * Copyright 2014 Arduino LLC (http://www.arduino.cc/)
+ *
+ * Arduino is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ */
+package cc.arduino.os.linux;
+
+import com.sun.jna.Library;
+import com.sun.jna.Native;
+import com.sun.jna.NativeLibrary;
+import com.sun.jna.Pointer;
+
+public interface LibCNative extends Library {
+
+  static LibCNative libc = (LibCNative) Native.loadLibrary("c",
+                                                           LibCNative.class);
+
+  Pointer errno = NativeLibrary.getInstance("c")
+      .getGlobalVariableAddress("errno");
+
+  public int chmod(String path, int mode);
+
+  public int link(String oldpath, String newpath);
+
+  public int symlink(String oldpath, String newpath);
+
+  public String strerror(int errno);
+
+}

arduino-core/src/cc/arduino/os/linux/LinuxFileNativeUtils.java

@@ -0,0 +1,60 @@
+/*
+ * This file is part of Arduino.
+ *
+ * Copyright 2014 Arduino LLC (http://www.arduino.cc/)
+ *
+ * Arduino is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ */
+package cc.arduino.os.linux;
+
+import java.io.File;
+import java.io.IOException;
+
+public class LinuxFileNativeUtils {
+
+  public static LibCNative libc = LibCNative.libc;
+
+  public static void chmod(File file, int mode) throws IOException {
+    int res = libc.chmod(file.getAbsolutePath(), mode);
+    if (res == -1)
+      throw new IOException("Could not change file permission: " + strerror());
+  }
+
+  public static void link(File file, File link) throws IOException {
+    int res = libc.link(file.getAbsolutePath(), link.getAbsolutePath());
+    if (res == -1)
+      throw new IOException("Could not create hard link: " + strerror());
+  }
+
+  public static void symlink(File file, File link) throws IOException {
+    int res = libc.symlink(file.getPath(), link.getAbsolutePath());
+    if (res == -1)
+      throw new IOException("Could not create symlink: " + strerror());
+  }
+
+  private static String strerror() {
+    return libc.strerror(LibCNative.errno.getInt(0));
+  }
+
+}

arduino-core/src/cc/arduino/os/macos/MacOSFileNativeUtils.java

@@ -0,0 +1,37 @@
+/*
+ * This file is part of Arduino.
+ *
+ * Copyright 2014 Arduino LLC (http://www.arduino.cc/)
+ *
+ * Arduino is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ */
+package cc.arduino.os.macos;
+
+import cc.arduino.os.linux.LinuxFileNativeUtils;
+
+public class MacOSFileNativeUtils extends LinuxFileNativeUtils {
+
+  // OSX and Linux shares the same POSIX API
+
+}

arduino-core/src/cc/arduino/os/windows/WindowsFileNativeUtils.java

@@ -0,0 +1,48 @@
+/*
+ * This file is part of Arduino.
+ *
+ * Copyright 2014 Arduino LLC (http://www.arduino.cc/)
+ *
+ * Arduino is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ */
+package cc.arduino.os.windows;
+
+import java.io.File;
+import java.io.IOException;
+
+public class WindowsFileNativeUtils {
+
+  public static void chmod(File file, int mode) throws IOException {
+    // Empty
+  }
+
+  public static void link(File file, File link) {
+    // Empty
+  }
+
+  public static void symlink(File file, File link) {
+    // Empty
+  }
+
+}