diff options
Diffstat (limited to 'Library/Homebrew/extend/os')
| -rw-r--r-- | Library/Homebrew/extend/os/mac/system_config.rb | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Library/Homebrew/extend/os/mac/system_config.rb b/Library/Homebrew/extend/os/mac/system_config.rb index 796134781..c0a28d3e9 100644 --- a/Library/Homebrew/extend/os/mac/system_config.rb +++ b/Library/Homebrew/extend/os/mac/system_config.rb @@ -23,6 +23,19 @@ class SystemConfig @ponk.join(", ") unless @ponk.empty? end + def describe_java + # java_home doesn't exist on all macOSs; it might be missing on older versions. + return "N/A" unless File.executable? "/usr/libexec/java_home" + + java_xml = Utils.popen_read("/usr/libexec/java_home", "--xml", "--failfast", err: :close) + return "N/A" unless $CHILD_STATUS.success? + javas = [] + REXML::XPath.each(REXML::Document.new(java_xml), "//key[text()='JVMVersion']/following-sibling::string") do |item| + javas << item.text + end + javas.uniq.join(", ") + end + def describe_xquartz return "N/A" unless MacOS::XQuartz.installed? "#{MacOS::XQuartz.version} => #{describe_path(MacOS::XQuartz.prefix)}" |