Module: Despeck::InstallationPostMessage

Defined in:
lib/despeck/installation_post_message.rb

Overview

Print notes from the installation

Class Method Summary collapse

Class Method Details

.build ⇒ Object 



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# File 'lib/despeck/installation_post_message.rb', line 8

def build
  if %w[1 true TRUE].include?(
    ENV.fetch('DESPECK_SKIP_INSTALL_NOTES', false)
  )
    return
  end

  require 'vips'
  return print_notes unless vips_check_passed?
end

.hr(line = '-') ⇒ Object 



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# File 'lib/despeck/installation_post_message.rb', line 73

def hr(line = '-')
  (line * 50)
end

.notes ⇒ Object 



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# File 'lib/despeck/installation_post_message.rb', line 54

def notes
  @notes ||= []
end

.print_notes ⇒ Object 



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# File 'lib/despeck/installation_post_message.rb', line 58

def print_notes
  return if notes.empty?

  puts <<~NOTES
    #{hr '='}
      Despeck Installation Notes :
    #{hr '-'}
    #{notes.uniq.join("\n")}
      To Skip this notes `export DESPECK_SKIP_INSTALL_NOTES=1`
    #{hr '='}
  NOTES
  @error_message = []
  false
end

.vips_check_passed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/despeck/installation_post_message.rb', line 47

def vips_check_passed?
  passed = true
  passed = false unless vips_version_supported?
  passed = false unless vips_support_pdf?
  passed
end

.vips_support_pdf? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/despeck/installation_post_message.rb', line 19

def vips_support_pdf?
  begin
    Vips::Image.pdfload
  rescue Vips::Error => e
    if e.message =~ /class "pdfload" not found/
      notes << <<~DOC
        - Libvips installed without PDF support, make sure you
          have PDFium/poppler-glib installed before installing
          despeck. For more detail install instruction go to
          this page https://libvips.github.io/libvips/install.html
      DOC
      return false
    end
  end
  true
end

.vips_version_supported? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/despeck/installation_post_message.rb', line 36

def vips_version_supported?
  version_only = Vips.version_string.match(/(\d+\.\d+\.\d+)/)[0]
  return true if version_only > '8.6.5'

  notes << <<~DOC
    - Your libvips version is should be minimal at 8.6.5
      Please rebuild/reinstall your libvips to >= 8.6.5 .
  DOC
  false
end