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require 'erb'
require 'stringio'
module PuppetSyntax
class Templates
def check(filelist)
raise 'Expected an array of files' unless filelist.is_a?(Array)
# We now have to redirect STDERR in order to capture warnings.
$stderr = warnings = StringIO.new
result = { warnings: [], errors: [] }
filelist.each do |file|
if File.extname(file) == '.epp' or PuppetSyntax.epp_only
tmp = validate_epp(file)
elsif File.extname(file) == '.erb'
tmp = validate_erb(file)
end
result.merge!(tmp) { |_k, a, b| a.concat(b) } unless tmp.nil?
end
$stderr = STDERR
result[:warnings] << warnings.string unless warnings.string.empty?
result[:errors].map! { |e| e.to_s }
result[:warnings].map! { |w| w.to_s }
result
end
def validate_epp(filename)
require 'puppet'
result = { warnings: [], errors: [] }
formatter = Puppet::Pops::Validation::DiagnosticFormatterPuppetStyle.new
evaluating_parser = Puppet::Pops::Parser::EvaluatingParser::EvaluatingEppParser.new
parser = evaluating_parser.parser
begin
parse_result = parser.parse_file(filename)
validation_result = evaluating_parser.validate(parse_result.model)
# print out any warnings
validation_result.warnings.each do |warn|
message = formatter.format_message(warn)
file = warn.file
line = warn.source_pos.line
column = warn.source_pos.pos
result[:warnings] << "#{file}:#{line}:#{column}: #{message}"
end
# collect errors and return them in order to indicate validation failure
validation_result.errors.each do |err|
message = formatter.format_message(err)
file = err.file
line = err.source_pos.line
column = err.source_pos.pos
result[:errors] << "#{file}:#{line}:#{column}: #{message}"
end
rescue Puppet::ParseError, SyntaxError => e
result[:errors] << e
rescue StandardError => e
result[:errors] << e
end
result
end
def validate_erb(filename)
result = { warnings: [], errors: [] }
begin
template = File.read(filename)
erb = if RUBY_VERSION >= '2.6'
ERB.new(template, trim_mode: '-')
else
ERB.new(template, trim_mode: '-')
end
erb.filename = filename
erb.result
rescue NameError => e
# This is normal because we don't have the variables that would
# ordinarily be bound by the parent Puppet manifest.
rescue TypeError
# This is normal because we don't have the variables that would
# ordinarily be bound by the parent Puppet manifest.
rescue SyntaxError => e
result[:errors] << e
end
result
end
end
end
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