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require "language/java"
class JavaRequirement < Requirement
fatal true
download "https://www.oracle.com/technetwork/java/javase/downloads/index.html"
satisfy build_env: false do
setup_java
next false unless @java
next true
end
def initialize(tags = [])
@version = tags.shift if /(\d+\.)+\d/ =~ tags.first
super
end
def message
version_string = " #{@version}" if @version
s = "Java#{version_string} is required to install this formula.\n"
s += super
s
end
def inspect
"#<#{self.class.name}: #{name.inspect} #{tags.inspect} version=#{@version.inspect}>"
end
def display_s
if @version
if exact_version?
op = "="
else
op = ">="
end
"#{name} #{op} #{version_without_plus}"
else
name
end
end
private
def version_without_plus
if exact_version?
@version
else
@version[0, @version.length - 1]
end
end
def exact_version?
@version && @version.to_s.chars.last != "+"
end
def setup_java
java = preferred_java
return unless java
@java = java
@java_home = java.parent.parent
end
def possible_javas
javas = []
javas << Pathname.new(ENV["JAVA_HOME"])/"bin/java" if ENV["JAVA_HOME"]
jdk = begin
Formula["jdk"]
rescue FormulaUnavailableError
nil
end
javas << jdk.bin/"java" if jdk&.installed?
javas << which("java")
javas
end
def preferred_java
possible_javas.detect do |java|
next false unless java&.executable?
next true unless @version
next true if satisfies_version(java)
end
end
def env_java_common
return unless @java_home
java_home = Pathname.new(@java_home)
ENV["JAVA_HOME"] = java_home
ENV.prepend_path "PATH", java_home/"bin"
end
def env_oracle_jdk
return unless @java_home
java_home = Pathname.new(@java_home)
return unless (java_home/"include").exist?
ENV.append_to_cflags "-I#{java_home}/include"
ENV.append_to_cflags "-I#{java_home}/include/#{oracle_java_os}"
true
end
def oracle_java_os
nil
end
def satisfies_version(java)
java_version_s = Utils.popen_read(java, "-version", err: :out)[/\d+.\d/]
return false unless java_version_s
java_version = Version.create(java_version_s)
needed_version = Version.create(version_without_plus)
if exact_version?
java_version == needed_version
else
java_version >= needed_version
end
end
end
require "extend/os/requirements/java_requirement"
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