Module: Lolcommits::CLI::Fatals

Includes:
Lolcommits, Methadone::CLILogging
Defined in:
lib/lolcommits/cli/fatals.rb

Overview

Helper methods for failing on error conditions in the lolcommits CLI.

Constant Summary

Constants included from Lolcommits

VERSION

Class Method Summary collapse

Class Method Details

.die_if_no_valid_ffmpeg_installed! ⇒ Object

Die with an informative error message if ffmpeg is not installed. This is only used for certain functions (such as animation), so only run this when you know the user wants to perform one of them.



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# File 'lib/lolcommits/cli/fatals.rb', line 58

def self.die_if_no_valid_ffmpeg_installed!
  unless Platform.valid_ffmpeg_installed?
    fatal 'FATAL: ffmpeg does not appear to be properly installed!'
    exit 1
  end
end

.die_if_not_git_repo! ⇒ Object

If we are not in a git repo, we can’t do git related things! Die with an informative error message in that case.



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# File 'lib/lolcommits/cli/fatals.rb', line 67

def self.die_if_not_git_repo!
  debug 'Checking for valid git repo'
  Git.open('.') # FIXME: should be extracted to GitInfo class
rescue ArgumentError
  # ruby-git throws an argument error if path isnt for a valid git repo.
  fatal "Erm? Can't do that since we're not in a valid git repository!"
  exit 1
end

.die_on_fatal_platform_conditions! ⇒ Object

Check for platform related conditions that could prevent lolcommits from working properly.

Die with an informative error message if any occur.



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# File 'lib/lolcommits/cli/fatals.rb', line 16

def self.die_on_fatal_platform_conditions!
  # make sure the capture binaries are in a good state
  if Platform.platform_mac?
    %w(imagesnap videosnap).each do |executable|
      next if File.executable? File.join(Configuration::LOLCOMMITS_ROOT, 'vendor', 'ext', executable, executable)
      fatal "Couldn't properly execute #{executable} for some reason, "\
            'please file a bug?!'
      exit 1
    end
  elsif Platform.platform_linux?
    unless Platform.command_which('mplayer')
      fatal "Couldn't find mplayer in your PATH!"
      exit 1
    end
  end

  # make sure we can find the default font
  unless File.readable? Lolcommits::Loltext::DEFAULT_FONT_PATH
    fatal "Couldn't properly read Impact font from gem package, "\
          'please file a bug?!'
    exit 1
  end

  # make sure imagemagick is around and good to go
  unless Platform.valid_imagemagick_installed?
    fatal 'FATAL: ImageMagick does not appear to be properly installed!'\
          '(or version is too old)'
    exit 1
  end

  # check for a error condition with git config affecting ruby-git
  if Platform.git_config_color_always?
    fatal 'Due to a bug in the ruby-git library, git config for color.ui'\
          " cannot be set to 'always'."
    fatal "Try setting it to 'auto' instead!"
    exit 1
  end
end