libreadline-java 0.8.0 (new formula)

A port of GNU Readline for Java.
Or, to be more precise, it is a JNI-wrapper to Readline.

Closes #14830.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

1 files changed, 86 insertions, 0 deletions

diff --git a/Library/Formula/libreadline-java.rb b/Library/Formula/libreadline-java.rb
new file mode 100644
index 000000000..386500170
--- /dev/null
+++ b/Library/Formula/libreadline-java.rb
@@ -0,0 +1,86 @@
+require 'formula'
+
+class LibreadlineJava < Formula
+  homepage 'http://java-readline.sourceforge.net/'
+  url 'http://downloads.sourceforge.net/project/java-readline/java-readline/0.8.0/libreadline-java-0.8.0-src.tar.gz'
+  sha1 '1f5574f9345afc039e9c7a09ae4979129891d52a'
+
+  depends_on 'readline'
+
+  def patches
+    # Fix "non-void function should return a value"-Error
+    # https://sourceforge.net/tracker/?func=detail&atid=453822&aid=3566332&group_id=48669
+    DATA
+  end
+
+  def install
+    ENV['JAVA_HOME'] = `/usr/libexec/java_home`.chomp!
+
+    # Current Oracle JDKs put the jni.h and jni_md.h in a different place than the
+    # original Apple/Sun JDK used to.
+    if File.exists? ENV['JAVA_HOME'] + "/include/jni.h" then
+      ENV['JAVAINCLUDE'] = ENV['JAVA_HOME'] + "/include"
+      ENV['JAVANATINC'] = ENV['JAVA_HOME'] + "/include/darwin"
+    elsif File.exists? "/System/Library/Frameworks/JavaVM.framework/Versions/Current/Headers/jni.h"
+      ENV['JAVAINCLUDE'] = "/System/Library/Frameworks/JavaVM.framework/Versions/Current/Headers/"
+      ENV['JAVANATINC'] = "/System/Library/Frameworks/JavaVM.framework/Versions/Current/Headers/"
+    end
+
+    # Take care of some hard-coded paths,
+    # adjust postfix of jni libraries,
+    # adjust gnu install parameters to bsd install
+    inreplace 'Makefile' do |s|
+      s.change_make_var! "PREFIX", prefix
+      s.change_make_var! "JAVALIBDIR", "$(PREFIX)/share/libreadline-java"
+      s.change_make_var! "JAVAINCLUDE", ENV['JAVAINCLUDE']
+      s.change_make_var! "JAVANATINC", ENV['JAVANATINC']
+      s.gsub! "*.so", "*.jnilib"
+      s.gsub! "install -D", "install -c"
+    end
+
+    # Take care of some hard-coded paths,
+    # adjust CC variable,
+    # adjust postfix of jni libraries
+    inreplace 'src/native/Makefile' do |s|
+      s.change_make_var! "INCLUDES", "-I $(JAVAINCLUDE) -I $(JAVANATINC) -I #{HOMEBREW_PREFIX}/opt/readline/include"
+      s.change_make_var! "LIBPATH", "-L#{HOMEBREW_PREFIX}/opt/readline/lib"
+      s.change_make_var! "CC", "cc"
+      s.gsub! "LIB_EXT := so", "LIB_EXT := jnilib"
+      s.gsub! "$(CC) -shared $(OBJECTS) $(LIBPATH) $($(TG)_LIBS) -o $@", "$(CC) -install_name #{HOMEBREW_PREFIX}/lib/$(LIB_PRE)$(TG).$(LIB_EXT) -dynamiclib $(OBJECTS) $(LIBPATH) $($(TG)_LIBS) -o $@"
+    end
+
+    mkdir_p prefix + "share/libreadline-java"
+
+    system "make jar"
+    system "make build-native"
+    system "make install"
+
+    doc.install Dir["api"]
+  end
+
+  def caveats; <<-EOS.undent
+    You may need to set JAVA_HOME:
+      export JAVA_HOME="$(/usr/libexec/java_home)"
+    EOS
+  end
+
+  # Testing libreadline-java (can we execute and exit libreadline without exceptions?)
+  test do
+    system "echo 'exit' | java -Djava.library.path=#{lib} -cp #{share}/libreadline-java/libreadline-java.jar test.ReadlineTest | grep -v Exception"
+  end
+end
+
+__END__
+diff --git a/src/native/org_gnu_readline_Readline.c b/src/native/org_gnu_readline_Readline.c
+index f601c73..b26cafc 100644
+--- a/src/native/org_gnu_readline_Readline.c
++++ b/src/native/org_gnu_readline_Readline.c
+@@ -430,7 +430,7 @@ const char *java_completer(char *text, int state) {
+   jtext = (*jniEnv)->NewStringUTF(jniEnv,text);
+
+   if (jniMethodId == 0) {
+-    return;
++    return ((const char *)NULL);
+   }
+
+   completion = (*jniEnv)->CallObjectMethod(jniEnv, jniObject,