214 lines
7.0 KiB
Markdown
Executable File
214 lines
7.0 KiB
Markdown
Executable File
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# Native-platform: Java bindings for various native APIs
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A collection of cross-platform Java APIs for various native APIs. Supports OS X, Linux, Solaris and Windows.
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These APIs support Java 5 and later. Some of these APIs overlap with APIs available in later Java versions.
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## Available bindings
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### System information
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* Get kernel name and version.
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* Get machine architecture.
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### Processes
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* Get the PID of the current process.
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* Get and set the process working directory.
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### Terminal and console
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These bindings work for both the UNIX terminal and the Windows console:
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* Determine if stdout/stderr are attached to a terminal.
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* Query the terminal size.
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* Switch between bold and normal mode on the terminal.
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* Change foreground color on the terminal.
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* Move terminal cursor up, down, left, right, start of line.
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* Clear to end of line.
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### File systems
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* Get and set UNIX file mode.
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* Create and read symbolic links.
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* List the available file systems on the machine
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* Query file system mount point.
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* Query file system type.
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* Query file system device name.
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* Query whether a file system is local or remote.
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## Supported platforms
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Currently ported to OS X, Linux and Windows. Support for Solaris and FreeBSD is a work in progress. Tested on:
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* OS X 10.7.4, 10.8 (x86_64), 10.6.7 (i386)
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* Ubunutu 12.04 (amd64), 8.04.4 (i386, amd64)
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* Solaris 11 (x86)
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* Windows 7 (x64), XP (x86)
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## Using
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Include `native-platform.jar` and `native-platform-${os}-${arch}.jar` in your classpath. From Gradle, you can do
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this:
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repositories {
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maven { url "http://repo.gradle.org/gradle/libs-releases-local" }
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}
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dependencies {
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compile "net.rubygrapefruit:native-platform:0.2"
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}
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You can also download [here](http://repo.gradle.org/gradle/libs-releases-local/net/rubygrapefruit/)
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Some sample code to use the terminal:
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import net.rubygrapefruit.platform.Native;
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import net.rubygrapefruit.platform.Terminals;
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import net.rubygrapefruit.platform.Terminal;
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import static net.rubygrapefruit.platform.Terminals.Output.*;
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Terminals terminals = Native.get(Terminals.class);
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// check if terminal
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terminals.isTerminal(Stdout);
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// use terminal
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Terminal stdout = terminals.getTerminal(Stdout);
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stdout.bold();
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System.out.println("bold text");
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## Changes
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### 0.3
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* Fixes to work with 64-bit OpenJDK 7 on Mac OS X. Thanks to Rene Gr<47>schke.
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### 0.2
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* Fixes to make native library extraction multi-process safe.
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* Fixes to windows terminal detection and reset.
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### 0.1
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* Initial release.
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# Development
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## Building
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You will need to use the Gradle wrapper. Just run `gradlew` in the root directory.
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### Ubuntu
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The g++ compiler is required to build the native library. You will need the `g++` package for this. Usually this is already installed.
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You need to install the `libncurses5-dev` package to pick up the ncurses header files. Also worth installing the `ncurses-doc` package too.
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#### 64-bit machines with multi-arch support
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Where multi-arch support is available (e.g. recent Ubuntu releases), you can build the i386 and amd64 versions of the library on the
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same machine.
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You need to install the `gcc-multilib` and `g++-multilib` packages to pick up i386 support.
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You need to install the `lib32ncurses5-dev` package to pick up the ncurses i386 version.
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To build, include `-Pmultiarch` on the command-line.
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### Windows
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You need to install Visual studio, and build from a Visual studio command prompt.
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### OS X
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The g++ compiler is required to build the native library. You will need to install the XCode tools for this.
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### Solaris
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For Solaris 11, you need to install the `development/gcc-45` and `system/header` packages.
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## Running
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Run `gradle installApp` to install the test application into `test-app/build/install/native-platform-test`. Or
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`gradle distZip` to create an application distribtion in `test-app/build/distributions/native-platform-test-$version.zip`.
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You can run `$INSTALL_DIR/bin/native-platform-test` to run the test application.
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# Releasing
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1. Create a tag and push.
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2. Build each variant:
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1. Checkout tag.
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2. `./gradlew clean :test :uploadJni -Prelease -PartifactoryUserName=<> -PartifactoryPassword=<>`
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* OS X universal
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* Linux i386, using Ubunutu 8.04
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* Linux amd64, using Ubunutu 8.04
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* Windows x86, using VC++ 2010
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* Windows x64
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3. Build Java library and test app:
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1. Checkout tag.
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2. `./gradlew clean :test :uploadArchives testApp:uploadArchives -Prelease -PartifactoryUserName=<> -PartifactoryPassword=<>`
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4. Checkout master
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5. Increment version number in `build.gradle` and this readme.
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## Testing
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* Test on IBM JVM.
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* Test on Java 5, 6, 7.
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* Test on Windows 7, Windows XP
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## TODO
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### Fixes
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* Posix: allow terminal to be detected when ncurses cannot be loaded
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* Windows: fix detection of shared drive under VMWare fusion and Windows XP
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* Linux: detect remote filesystems.
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* Solaris: fix unicode file name handling.
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* Solaris: fail for unsupported architecture.
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* Solaris: build 32 bit and 64 bit libraries.
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* Freebsd: finish port.
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* Freebsd: fail for unsupported architecture.
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* Freebsd: build 32 bit and 64 bit libraries.
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### Improvements
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* Use wchar_to_java() for windows system and file system info.
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* Test network file systems on Mac, Linux, Windows
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* Test mount points on Windows
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* Cache class, method and field lookups (in particular for String conversions).
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* Determine C charset once at startup
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* Change readLink() implementation so that it does not need to NULL terminate the encoded content
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* Don't use NewStringUTF() anywhere
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* Don't use NewString() anywhere
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* Use iconv() to convert from C char string to UTF-16 when converting from C char string to Java String.
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* Support for cygwin terminal
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* Use TERM=xtermc instead of TERM=xterm on Solaris.
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* Add diagnostics for terminal.
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* Split out separate native library for terminal handling.
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* Version each native interface separately.
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* String names for errno values.
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* Split into multiple projects.
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* Convert to c.
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* Use fully decomposed form for unicode file names on hfs+ filesystems.
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* Extend FileSystem to deal with removable media.
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* Add a method to Terminal that returns a PrintStream that can be used to write to the terminal, regardless of what
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System.out/System.err point to.
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* Add a Terminal implementation that uses ANSI control codes. Use this on UNIX platforms when TERM != 'dumb' and
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libncurses cannot be loaded.
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* Add a method to Terminal that indicates whether the cursor wraps to the next line when a character is written to the
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rightmost character position.
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### Ideas
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* Expose platform-specific HTTP proxy configuration. Query registry on windows to determine IE settings.
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* Expose native named semaphores, mutexes and condition variables (CreateMutex, CreateSemaphore, CreateEvent, semget, sem_open, etc).
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* Expose infromation about network interfaces.
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* Fire events when filesystems or network interfaces change in some way.
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* Fire events when terminal size changes.
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* Fire events when files change.
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* Expose system keystores and authentication services.
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* Expose a mechanism for generating a temporary directory.
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