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module Gitlab
class RouteMap
class FormatError < StandardError; end
def initialize(data)
begin
entries = YAML.safe_load(data)
rescue
raise FormatError, 'Route map needs to be valid YAML'
end
raise FormatError, 'Route map needs to be an array' unless entries.is_a?(Array)
@map = entries.map { |entry| parse_entry(entry) }
end
def public_path_for_source_path(path)
mapping = @map.find { |mapping| path =~ mapping[:source] }
return unless mapping
path.sub(mapping[:source], mapping[:public])
end
private
def parse_entry(entry)
raise FormatError, 'Route map entry needs to be a hash' unless entry.is_a?(Hash)
raise FormatError, 'Route map entry requires a source key' unless entry.has_key?('source')
raise FormatError, 'Route map entry requires a public key' unless entry.has_key?('public')
source_regexp = entry['source']
public_path = entry['public']
unless source_regexp.start_with?('/') && source_regexp.end_with?('/')
raise FormatError, 'Route map entry source needs to start and end in a slash (/)'
end
source_regexp = source_regexp[1...-1].gsub('\/', '/')
begin
source_regexp = Regexp.new("^#{source_regexp}$")
rescue RegexpError => e
raise FormatError, "Route map entry source needs to be a valid regular expression: #{e}"
end
{
source: source_regexp,
public: public_path
}
end
end
end
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