Module: Hub::Context::System
- Included in:
- Hub::Context, Hub::Context
- Defined in:
- lib/hub/context.rb
Instance Method Summary collapse
-
#browser_launcher ⇒ Object
Cross-platform web browser command; respects the value set in $BROWSER.
-
#command?(name) ⇒ Boolean
Checks whether a command exists on this system in the $PATH.
- #osx? ⇒ Boolean
- #terminal_width ⇒ Object
- #tmp_dir ⇒ Object
- #unix? ⇒ Boolean
-
#which(cmd) ⇒ Object
Cross-platform way of finding an executable in the $PATH.
- #windows? ⇒ Boolean
Instance Method Details
#browser_launcher ⇒ Object
Cross-platform web browser command; respects the value set in $BROWSER.
Returns an array, e.g.: [‘open’]
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# File 'lib/hub/context.rb', line 474 def browser_launcher browser = ENV['BROWSER'] || ( osx? ? 'open' : windows? ? %w[cmd /c start] : %w[xdg-open cygstart x-www-browser firefox opera mozilla netscape].find { |comm| which comm } ) abort "Please set $BROWSER to a web launcher to use this command." unless browser Array(browser) end |
#command?(name) ⇒ Boolean
Checks whether a command exists on this system in the $PATH.
name - The String name of the command to check for.
Returns a Boolean.
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# File 'lib/hub/context.rb', line 518 def command?(name) !which(name).nil? end |
#osx? ⇒ Boolean
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# File 'lib/hub/context.rb', line 484 def osx? require 'rbconfig' RbConfig::CONFIG['host_os'].to_s.include?('darwin') end |
#terminal_width ⇒ Object
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# File 'lib/hub/context.rb', line 526 def terminal_width if unix? width = %x{stty size 2>#{NULL}}.split[1].to_i width = %x{tput cols 2>#{NULL}}.to_i if width.zero? else width = 0 end width < 10 ? 78 : width end |
#tmp_dir ⇒ Object
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# File 'lib/hub/context.rb', line 522 def tmp_dir ENV['TMPDIR'] || ENV['TEMP'] || '/tmp' end |
#unix? ⇒ Boolean
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# File 'lib/hub/context.rb', line 494 def unix? require 'rbconfig' RbConfig::CONFIG['host_os'] =~ /(aix|darwin|linux|(net|free|open)bsd|cygwin|solaris|irix|hpux)/i end |
#which(cmd) ⇒ Object
Cross-platform way of finding an executable in the $PATH.
which('ruby') #=> /usr/bin/ruby
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# File 'lib/hub/context.rb', line 502 def which(cmd) exts = ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') : [''] ENV['PATH'].split(File::PATH_SEPARATOR).each do |path| exts.each { |ext| exe = "#{path}/#{cmd}#{ext}" return exe if File.executable? exe } end return nil end |
#windows? ⇒ Boolean
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# File 'lib/hub/context.rb', line 489 def windows? require 'rbconfig' RbConfig::CONFIG['host_os'] =~ /msdos|mswin|djgpp|mingw|windows/ end |