Module: TCellAgent::Utils::Strings

Defined in:
lib/tcell_agent/utils/strings.rb

Constant Summary collapse

BLANK_RE = 
/\A[[:space:]]*\z/

Class Method Summary collapse

Class Method Details

.blank?(str) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tcell_agent/utils/strings.rb', line 6

def self.blank?(str)
  str.nil? || str.empty? || BLANK_RE === str # rubocop:disable Style/CaseEquality
end

.java_hashcode(str) ⇒ Object

emulate the java String.hashcode() without upcasting to BigInt



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# File 'lib/tcell_agent/utils/strings.rb', line 21

def self.java_hashcode(str)
  result = 0
  str.each_codepoint do |cp|
    # prevent overflow into BigInt which would cause heap allocs + emulate c-style int32 signed add overflow
    result = ((((((result & 0x07FFFFFF) << 5) - result) + cp) + 0x80000000) & 0xFFFFFFFF) - 0x80000000
  end
  result
end

.present?(str) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tcell_agent/utils/strings.rb', line 10

def self.present?(str)
  !blank?(str)
end

.remove_trailing_slash(path) ⇒ Object 



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# File 'lib/tcell_agent/utils/strings.rb', line 14

def self.remove_trailing_slash(path)
  return path.chomp('/') if path && path != '/'

  path
end