Class: TextUtil

Inherits:
Object show all
Defined in:
lib/xiki/text_util.rb

Class Method Summary collapse

Class Method Details

.camel_case(s) ⇒ Object

TextUtil.camel_case(“hi there”) # -> HiThere



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# File 'lib/xiki/text_util.rb', line 77

def self.camel_case s
  # If it's all capitals, make subsequent copitals lowercase
  if s =~ /^[A-Z_-]+$/
    s = s.gsub(/([A-Z][A-Z]+)/) {"#{$1.capitalize}"}
  end

  s.gsub(/[ -]/, '_').
    gsub(/_([a-z]+)/) {"#{$1.capitalize}"}.
    sub(/(.)/) {$1.upcase}.
    gsub("_", "").
    gsub(/[^\w]/, "")
end

.camel_case!(s) ⇒ Object 



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# File 'lib/xiki/text_util.rb', line 90

def self.camel_case! s
  s.replace self.camel_case(s)
end

.case_choices ⇒ Object 



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# File 'lib/xiki/text_util.rb', line 23

def self.case_choices
  [
    ['upper', lambda {|o| o.upcase}],
    ['lower', lambda {|o| o.downcase}],
    ['title', lambda {|o| TextUtil.title_case(o)}],
    ['camel', lambda {|o| TextUtil.camel_case(o)}],
    ['snake', lambda {|o| TextUtil.snake_case(o)}],
    ['plus', lambda {|o| TextUtil.plus_case(o)}],
    ['hyphen', lambda {|o| TextUtil.hyphen_case(o)}],
    ]
end

.hyphen_case(s) ⇒ Object

TextUtil.hyphen_case(“hi there”) # -> hi-there



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# File 'lib/xiki/text_util.rb', line 70

def self.hyphen_case s
  s.gsub(/[ _]/, '-').
    gsub(/([a-z])([A-Z0-9])/) {"#{$1}-#{$2}"}.downcase.
    gsub(/--+/, "-")
end

.menu ⇒ Object 



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# File 'lib/xiki/text_util.rb', line 6

def self.menu
  %`
  > Change case
  @ TextUtil.camel_case "hey you"
  @ TextUtil.hyphen_case "hey you"
  @ TextUtil.snake_case "hey you"
  @ TextUtil.title_case "hey you"

  > Modify vars in-place
  You can also use bang versions, like:
  @ s = "hey you";  TextUtil.camel_case! s;  p s

  > Unindent
  @ TextUtil.unindent "hey you"
  `
end

.plus_case(s) ⇒ Object

TextUtil.plus_case(“hi there”) # -> hi+there



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# File 'lib/xiki/text_util.rb', line 61

def self.plus_case s
  self.snake_case(s).gsub('_', '+')
end

.snake_case(s) ⇒ Object

TextUtil.snake_case(“hi there”) # -> hi_there



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# File 'lib/xiki/text_util.rb', line 53

def self.snake_case s
  s.gsub(/[ -]/, '_').
    gsub(/([a-z0-9])([A-Z])/) {"#{$1}_#{$2}"}.downcase.
    gsub(/[^\w]/, "").
    gsub(/__+/, "_")
end

.snake_case!(s) ⇒ Object 



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# File 'lib/xiki/text_util.rb', line 65

def self.snake_case! s
  s.replace self.snake_case(s)
end

.title_case(s, options = {}) ⇒ Object

TextUtil.title_case(“hi there”) # -> Hi There



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# File 'lib/xiki/text_util.rb', line 95

def self.title_case s, options={}
  s = s.gsub(/[ -]/, '_').
    gsub(/([a-z])([A-Z0-9])/) {"#{$1}_#{$2}"}.downcase.
    gsub(/([a-z]+)/) {"#{$1.capitalize}"}.
    gsub(/__*/, " ")

  s.gsub! " ", "_" if options[:underscores]

  s
end

.title_case!(s) ⇒ Object 



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# File 'lib/xiki/text_util.rb', line 106

def self.title_case! s
  s.replace self.title_case(s)
end

.unindent(txt, options = {}) ⇒ Object 



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# File 'lib/xiki/text_util.rb', line 35

def self.unindent txt, options={}
  txt = txt.sub(/\A\n/, '')# if ! options[:no_strip]   # Delete initial blank line if there

  txt.gsub!(/^\s+/) { |t| t.gsub("\t", '        ') }   # Untab indent

  # If 1st line has no indent and 2nd line has indent (at least 3 spaces)
  if txt !~ /\A / and txt =~ /\A.+\n(   +)/
    indent = $1   # Indent left by 2nd indent
    return txt.gsub(/^#{indent}/, '')
  end

  old_indent = Line.indent(txt)   # Get indent of first line

  txt.gsub!(/^#{old_indent}/, '')   # Delete current indent
  "#{txt.strip}\n"
end