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# Uses sprintf with named references.
#
# The first parameter is format string describing how the rest of the parameters in the hash
# should be formatted. See the documentation for the `Kernel::sprintf` function in Ruby for
# all the details.
#
# In the given argument hash with parameters, all keys are converted to symbols so they work
# with the `sprintf` function.
#
# @example Format a string and number
# $output = sprintf_hash('String: %<foo>s / number converted to binary: %<number>b',
# { 'foo' => 'a string', 'number' => 5 })
# # $output = 'String: a string / number converted to binary: 101'
#
Puppet::Functions.create_function(:sprintf_hash) do
# @param format The format to use.
# @param arguments Hash with parameters.
# @return The formatted string.
dispatch :sprintf_hash do
param 'String', :format
param 'Hash', :arguments
# Disabled for now. This gives issues on puppet 4.7.1.
# return_type 'String'
end
def sprintf_hash(format, arguments)
Kernel.sprintf(format, Hash[arguments.map { |(k, v)| [k.to_sym, v] }])
end
end
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