Puppet Function: validate_string

Defined in:
modules/stdlib/lib/puppet/parser/functions/validate_string.rb
Function type:
Ruby 3.x API

Overview

validate_string()Any

> Note: Validate_string(undef) will not fail in this version of the functions API (incl. current and future parser). Instead, use: “`

if $var == undef {
   fail('...')
  }

“`

Examples:

*Usage*

The following values will pass:

    $my_string = "one two"
    validate_string($my_string, 'three')

The following values will fail, causing compilation to abort:

    validate_string(true)
    validate_string([ 'some', 'array' ])

Returns:

  • (Any)

    Validate that all passed values are string data structures. Failed compilation if any value fails this check.



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# File 'modules/stdlib/lib/puppet/parser/functions/validate_string.rb', line 5

newfunction(:validate_string, :doc => <<-DOC
  @summary
    Validate that all passed values are string data structures

  @return
    Validate that all passed values are string data structures. Failed
    compilation if any value fails this check.

  @example **Usage**
    The following values will pass:

        $my_string = "one two"
        validate_string($my_string, 'three')

    The following values will fail, causing compilation to abort:

        validate_string(true)
        validate_string([ 'some', 'array' ])
  > *Note:*
  Validate_string(undef) will not fail in this version of the
  functions API (incl. current and future parser). Instead, use:
  ```
    if $var == undef {
       fail('...')
      }
  ```
  DOC
           ) do |args|
  function_deprecation([:validate_string, 'This method is deprecated, please use the stdlib validate_legacy function,
                          with Stdlib::Compat::String. There is further documentation for validate_legacy function in the README.'])

  if args.empty?
    raise Puppet::ParseError, "validate_string(): wrong number of arguments (#{args.length}; must be > 0)"
  end

  args.each do |arg|
    # when called through the v4 API shim, undef gets translated to nil
    unless arg.is_a?(String) || arg.nil?
      raise Puppet::ParseError, "#{arg.inspect} is not a string.  It looks to be a #{arg.class}"
    end
  end
end