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-rw-r--r--lib/puppet/parser/functions/validate_slength.rb52
1 files changed, 52 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/validate_slength.rb b/lib/puppet/parser/functions/validate_slength.rb
new file mode 100644
index 0000000..fdcc0a2
--- /dev/null
+++ b/lib/puppet/parser/functions/validate_slength.rb
@@ -0,0 +1,52 @@
+module Puppet::Parser::Functions
+
+ newfunction(:validate_slength, :doc => <<-'ENDHEREDOC') do |args|
+ Validate that the first argument is a string (or an array of strings), and
+ less/equal to than the length of the second argument. It fails if the first
+ argument is not a string or array of strings, and if arg 2 is not convertable
+ to a number.
+
+ The following values will pass:
+
+ validate_slength("discombobulate",17)
+ validate_slength(["discombobulate","moo"],17)
+
+ The following valueis will not:
+
+ validate_slength("discombobulate",1)
+ validate_slength(["discombobulate","thermometer"],5)
+
+ ENDHEREDOC
+
+ raise Puppet::ParseError, ("validate_slength(): Wrong number of arguments (#{args.length}; must be = 2)") unless args.length == 2
+
+ unless (args[0].is_a?(String) or args[0].is_a?(Array))
+ raise Puppet::ParseError, ("validate_slength(): please pass a string, or an array of strings - what you passed didn't work for me at all - #{args[0].class}")
+ end
+
+ begin
+ max_length = args[1].to_i
+ rescue NoMethodError => e
+ raise Puppet::ParseError, ("validate_slength(): Couldn't convert whatever you passed as the length parameter to an integer - sorry: " + e.message )
+ end
+
+ raise Puppet::ParseError, ("validate_slength(): please pass a positive number as max_length") unless max_length > 0
+
+ case args[0]
+ when String
+ raise Puppet::ParseError, ("validate_slength(): #{args[0].inspect} is #{args[0].length} characters. It should have been less than or equal to #{max_length} characters") unless args[0].length <= max_length
+ when Array
+ args[0].each do |arg|
+ if arg.is_a?(String)
+ unless ( arg.is_a?(String) and arg.length <= max_length )
+ raise Puppet::ParseError, ("validate_slength(): #{arg.inspect} is #{arg.length} characters. It should have been less than or equal to #{max_length} characters")
+ end
+ else
+ raise Puppet::ParseError, ("validate_slength(): #{arg.inspect} is not a string, it's a #{arg.class}")
+ end
+ end
+ else
+ raise Puppet::ParseError, ("validate_slength(): please pass a string, or an array of strings - what you passed didn't work for me at all - #{args[0].class}")
+ end
+ end
+end