/* * Copyright © 2009 Reinier Zwitserloot and Roel Spilker. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package lombok.installer; import java.util.ArrayList; import java.util.List; /** * This class uses native calls on windows to figure out all drives, * and, for each drive, if its a harddisk or something else. * * The output is essentially equivalent to running windows executable: * <pre>fsutil fsinfo drives</pre> * and * <pre>fsutil fsinfo drivetype C:</pre> * * except that (A) fsutil requires privileges, (B) someone might have moved * it out of the path or some such, and (C) its output is internationalized, * so unless you want to include a table of how to say "Fixed Disk" in 300 * languages, this really is a superior solution. * <p> * To compile it, you'll need windows, as well as MinGW: * http://sourceforge.net/projects/mingw/files/ * <p> * Fetch gcc 4.0.4+, you don't need anything extra. Toss /c/mingw/bin in * your git bash prompt's path (/etc/profile) and then run: * * $ gcc -c \ -I "/c/Program Files/Java/jdk1.6.0_14/include" \ -I "/c/Program Files/Java/jdk1.6.0_14/include/win32" \ -D__int64="long long" lombok_installer_WindowsDriveInfo.c * * $ dllwrap.exe --add-stdcall-alias \ -o WindowsDriveInfo-i386.dll \ lombok_installer_WindowsDriveInfo.o * * You may get a warning along the lines of "Creating an export definition". * This is expected behaviour. * * <p> * Now download MinGW-w64 to build the 64-bit version of the dll (you thought you were done, weren't you?) * from: http://sourceforge.net/projects/mingw-w64/files/ * (under toolchains targetting Win64 / Release for GCC 4.4.0 (or later) / the version for your OS.) * * Then, do this all over again, but this time with the x86_64-w64-mingw32-gcc and * x86_64-w64-mingw32-dllwrap versions that are part of the MinGW-w64 distribution. * Name the dll 'WindowsDriveInfo-x86_64.dll'. * * Both the 32-bit and 64-bit DLLs that this produces have been checked into the git repository * under src/lombok/installer so you won't need to build them again unless you make some changes to * the code in the winsrc directory. */ public class WindowsDriveInfo { /** * Return a list of all available drive letters, such as ["A", "C", "D"]. */ public List<String> getLogicalDrives() { int flags = getLogicalDrives0(); List<String> letters = new ArrayList<String>(); for ( int i = 0 ; i < 26 ; i++ ) { if ( (flags & (1 << i)) != 0 ) letters.add(Character.toString((char)('A' + i))); } return letters; } /** * Calls kernel32's GetLogicalDrives, which returns an int containing * flags; bit 0 corresponds to drive A, bit 25 to drive Z. on = disk exists. */ private native int getLogicalDrives0(); /** * Feed it a drive letter (such as 'A') to see if it is a fixed disk. */ public boolean isFixedDisk(String letter) { if ( letter.length() != 1 ) throw new IllegalArgumentException("Supply 1 letter, not: " + letter); char drive = Character.toUpperCase(letter.charAt(0)); if ( drive < 'A' || drive > 'Z' ) throw new IllegalArgumentException( "A drive is indicated by a letter, so A-Z inclusive. Not " + drive); return getDriveType(drive + ":\\") == 3L; } /** * Mirror of kernel32's GetDriveTypeA. You must pass in 'A:\\' - * so including both a colon and a backslash! * * 0 = error * 1 = doesn't exist * 2 = removable drive * 3 = fixed disk * 4 = remote (network) disk * 5 = cd-rom * 6 = ram disk */ private native int getDriveType(String name); public static void main(String[] args) { System.loadLibrary("WindowsDriveInfo"); WindowsDriveInfo info = new WindowsDriveInfo(); for ( String letter : info.getLogicalDrives() ) { System.out.printf("Drive %s: - %s\n", letter, info.isFixedDisk(letter) ? "Fixed Disk" : "Not Fixed Disk"); } } }