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-rw-r--r--lib/puppet/parser/functions/chop.rb37
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/chop.rb b/lib/puppet/parser/functions/chop.rb
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+++ b/lib/puppet/parser/functions/chop.rb
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+#
+# chop.rb
+#
+
+module Puppet::Parser::Functions
+ newfunction(:chop, :type => :rvalue, :doc => <<-'EOS'
+ Returns a new string with the last character removed. If the string ends
+ with `\r\n`, both characters are removed. Applying chop to an empty
+ string returns an empty string. If you wish to merely remove record
+ separators then you should use the `chomp` function.
+ Requires a string or array of strings as input.
+ EOS
+ ) do |arguments|
+
+ raise(Puppet::ParseError, "chop(): Wrong number of arguments " +
+ "given (#{arguments.size} for 1)") if arguments.size < 1
+
+ value = arguments[0]
+ klass = value.class
+
+ unless [Array, String].include?(klass)
+ raise(Puppet::ParseError, 'chop(): Requires either an ' +
+ 'array or string to work with')
+ end
+
+ if value.is_a?(Array)
+ # Numbers in Puppet are often string-encoded which is troublesome ...
+ result = value.collect { |i| i.is_a?(String) ? i.chop : i }
+ else
+ result = value.chop
+ end
+
+ return result
+ end
+end
+
+# vim: set ts=2 sw=2 et :