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class JavaRequirement < Requirement
cask "java"
env do
env_java_common
env_oracle_jdk || env_apple
end
private
def possible_javas
javas = []
javas << Pathname.new(ENV["JAVA_HOME"])/"bin/java" if ENV["JAVA_HOME"]
javas << java_home_cmd
which_java = which("java")
# /usr/bin/java is a stub on macOS
javas << which_java if which_java.to_s != "/usr/bin/java"
javas
end
def java_home_cmd
return nil unless File.executable?("/usr/libexec/java_home")
args = %w[--failfast]
args << "--version" << @version.to_s if @version
java_home = Utils.popen_read("/usr/libexec/java_home", *args).chomp
return nil unless $?.success?
Pathname.new(java_home)/"bin/java"
end
def env_apple
ENV.append_to_cflags "-I/System/Library/Frameworks/JavaVM.framework/Versions/Current/Headers/"
end
def oracle_java_os
:darwin
end
end
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