Class: Csvlint::Validator
- Inherits:
-
Object
- Object
- Csvlint::Validator
- Includes:
- ErrorCollector
- Defined in:
- lib/csvlint/validate.rb
Defined Under Namespace
Classes: LineCSV
Constant Summary collapse
- ERROR_MATCHERS =
{ "Missing or stray quote" => :stray_quote, "Illegal quoting" => :whitespace, "Unclosed quoted field" => :unclosed_quote, "Unquoted fields do not allow \\r or \\n" => :line_breaks, }
Instance Attribute Summary collapse
-
#content_type ⇒ Object
readonly
Returns the value of attribute content_type.
-
#csv_header ⇒ Object
readonly
Returns the value of attribute csv_header.
-
#current_line ⇒ Object
readonly
Returns the value of attribute current_line.
-
#data ⇒ Object
readonly
Returns the value of attribute data.
-
#dialect ⇒ Object
readonly
Returns the value of attribute dialect.
-
#encoding ⇒ Object
readonly
Returns the value of attribute encoding.
-
#extension ⇒ Object
readonly
Returns the value of attribute extension.
-
#headers ⇒ Object
readonly
Returns the value of attribute headers.
-
#link_headers ⇒ Object
readonly
Returns the value of attribute link_headers.
-
#schema ⇒ Object
readonly
Returns the value of attribute schema.
Attributes included from ErrorCollector
#errors, #info_messages, #warnings
Instance Method Summary collapse
- #build_exception_messages(csvException, errChars, lineNo) ⇒ Object
- #build_formats(row) ⇒ Object
- #build_linebreak_error ⇒ Object
- #check_consistency ⇒ Object
- #check_foreign_keys ⇒ Object
- #check_mixed_linebreaks ⇒ Object
- #dialect_to_csv_options(dialect) ⇒ Object
- #fetch_error(error) ⇒ Object
- #finish ⇒ Object
- #header? ⇒ Boolean
-
#initialize(source, dialect = {}, schema = nil, options = {}) ⇒ Validator
constructor
A new instance of Validator.
- #line_breaks ⇒ Object
- #line_breaks_reported? ⇒ Boolean
- #locate_schema ⇒ Object
-
#parse_contents(stream, line = nil) ⇒ Object
analyses the provided csv and builds errors, warnings and info messages.
- #parse_line(line) ⇒ Object
- #report_line_breaks(line_no = nil) ⇒ Object
- #row_count ⇒ Object
- #set_dialect ⇒ Object
- #validate ⇒ Object
- #validate_encoding ⇒ Object
- #validate_header(header) ⇒ Object
- #validate_line(input = nil, index = nil) ⇒ Object
- #validate_metadata ⇒ Object
- #validate_stream ⇒ Object
- #validate_url ⇒ Object
Methods included from ErrorCollector
#build_errors, #build_info_messages, #build_warnings, #reset, #valid?
Constructor Details
#initialize(source, dialect = {}, schema = nil, options = {}) ⇒ Validator
Returns a new instance of Validator.
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# File 'lib/csvlint/validate.rb', line 62 def initialize(source, dialect = {}, schema = nil, = {}) reset @source = source @formats = [] @schema = schema @dialect = dialect @csv_header = true @headers = {} @lambda = [:lambda] @validate = [:validate].nil? ? true : [:validate] @leading = "" @limit_lines = [:limit_lines] @extension = parse_extension(source) unless @source.nil? @expected_columns = 0 @col_counts = [] @line_breaks = [] @errors += @schema.errors unless @schema.nil? @warnings += @schema.warnings unless @schema.nil? @data = [] # it may be advisable to flush this on init? validate end |
Instance Attribute Details
#content_type ⇒ Object (readonly)
Returns the value of attribute content_type.
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# File 'lib/csvlint/validate.rb', line 53 def content_type @content_type end |
#csv_header ⇒ Object (readonly)
Returns the value of attribute csv_header.
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# File 'lib/csvlint/validate.rb', line 53 def csv_header @csv_header end |
#current_line ⇒ Object (readonly)
Returns the value of attribute current_line.
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# File 'lib/csvlint/validate.rb', line 53 def current_line @current_line end |
#data ⇒ Object (readonly)
Returns the value of attribute data.
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# File 'lib/csvlint/validate.rb', line 53 def data @data end |
#dialect ⇒ Object (readonly)
Returns the value of attribute dialect.
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# File 'lib/csvlint/validate.rb', line 53 def dialect @dialect end |
#encoding ⇒ Object (readonly)
Returns the value of attribute encoding.
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# File 'lib/csvlint/validate.rb', line 53 def encoding @encoding end |
#extension ⇒ Object (readonly)
Returns the value of attribute extension.
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# File 'lib/csvlint/validate.rb', line 53 def extension @extension end |
#headers ⇒ Object (readonly)
Returns the value of attribute headers.
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# File 'lib/csvlint/validate.rb', line 53 def headers @headers end |
#link_headers ⇒ Object (readonly)
Returns the value of attribute link_headers.
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# File 'lib/csvlint/validate.rb', line 53 def link_headers @link_headers end |
#schema ⇒ Object (readonly)
Returns the value of attribute schema.
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# File 'lib/csvlint/validate.rb', line 53 def schema @schema end |
Instance Method Details
#build_exception_messages(csvException, errChars, lineNo) ⇒ Object
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# File 'lib/csvlint/validate.rb', line 338 def (csvException, errChars, lineNo) #TODO 1 - this is a change in logic, rather than straight refactor of previous error building, however original logic is bonkers #TODO 2 - using .kind_of? is a very ugly fix here and it meant to work around instances where :auto symbol is preserved in @csv_options type = fetch_error(csvException) if !@csv_options[:row_sep].kind_of?(Symbol) && [:unclosed_quote,:stray_quote].include?(type) && !@input.match(@csv_options[:row_sep]) build_linebreak_error else build_errors(type, :structure, lineNo, nil, errChars) end end |
#build_formats(row) ⇒ Object
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# File 'lib/csvlint/validate.rb', line 390 def build_formats(row) row.each_with_index do |col, i| next if col.nil? || col.empty? @formats[i] ||= Hash.new(0) format = if col.strip[FORMATS[:numeric]] :numeric elsif uri?(col) :uri elsif possible_date?(col) date_formats(col) else :string end @formats[i][format] += 1 end end |
#build_linebreak_error ⇒ Object
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# File 'lib/csvlint/validate.rb', line 349 def build_linebreak_error build_errors(:line_breaks, :structure) unless @errors.any? { |e| e.type == :line_breaks } end |
#check_consistency ⇒ Object
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# File 'lib/csvlint/validate.rb', line 410 def check_consistency @formats.each_with_index do |format,i| if format total = format.values.reduce(:+).to_f if format.none?{|_,count| count / total >= 0.9} build_warnings(:inconsistent_values, :schema, nil, i + 1) end end end end |
#check_foreign_keys ⇒ Object
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# File 'lib/csvlint/validate.rb', line 421 def check_foreign_keys if @schema.instance_of? Csvlint::Csvw::TableGroup @schema.validate_foreign_keys @errors += @schema.errors @warnings += @schema.warnings end end |
#check_mixed_linebreaks ⇒ Object
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# File 'lib/csvlint/validate.rb', line 322 def check_mixed_linebreaks build_linebreak_error if @line_breaks.uniq.count > 1 end |
#dialect_to_csv_options(dialect) ⇒ Object
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# File 'lib/csvlint/validate.rb', line 378 def (dialect) skipinitialspace = dialect["skipInitialSpace"] || true delimiter = dialect["delimiter"] delimiter = delimiter + " " if !skipinitialspace return { :col_sep => delimiter, :row_sep => dialect["lineTerminator"], :quote_char => dialect["quoteChar"], :skip_blanks => false } end |
#fetch_error(error) ⇒ Object
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# File 'lib/csvlint/validate.rb', line 372 def fetch_error(error) e = error..match(/^(.+?)(?: [io]n)? \(?line \d+\)?\.?$/i) = e[1] rescue nil ERROR_MATCHERS.fetch(, :unknown_error) end |
#finish ⇒ Object
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# File 'lib/csvlint/validate.rb', line 212 def finish sum = @col_counts.inject(:+) unless sum.nil? build_warnings(:title_row, :structure) if @col_counts.first < (sum / @col_counts.size.to_f) end # return expected_columns to calling class build_warnings(:check_options, :structure) if @expected_columns == 1 check_consistency check_foreign_keys if @validate check_mixed_linebreaks validate_encoding end |
#header? ⇒ Boolean
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# File 'lib/csvlint/validate.rb', line 268 def header? @csv_header && @dialect["header"] end |
#line_breaks ⇒ Object
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# File 'lib/csvlint/validate.rb', line 326 def line_breaks if @line_breaks.uniq.count > 1 :mixed else @line_breaks.uniq.first end end |
#line_breaks_reported? ⇒ Boolean
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# File 'lib/csvlint/validate.rb', line 284 def line_breaks_reported? @line_breaks_reported === true end |
#locate_schema ⇒ Object
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# File 'lib/csvlint/validate.rb', line 429 def locate_schema @source_url = nil warn_if_unsuccessful = false case @source when StringIO return when File @source_url = "file:#{URI.encode(File.(@source))}" else @source_url = @source end unless @schema.nil? if @schema.tables[@source_url] return else @schema = nil end end paths = [] if @source_url =~ /^http(s)?/ begin well_known_uri = URI.join(@source_url, "/.well-known/csvm") paths = open(well_known_uri).read.split("\n") rescue OpenURI::HTTPError, URI::BadURIError end end paths = ["{+url}-metadata.json", "csv-metadata.json"] if paths.empty? paths.each do |template| begin template = URITemplate.new(template) path = template.('url' => @source_url) url = URI.join(@source_url, path) url = File.new(url.to_s.sub(/^file:/, "")) if url.to_s =~ /^file:/ schema = Schema.load_from_json(url) if schema.instance_of? Csvlint::Csvw::TableGroup if schema.tables[@source_url] @schema = schema return else warn_if_unsuccessful = true build_warnings(:schema_mismatch, :context, nil, nil, @source_url, schema) end end rescue Errno::ENOENT rescue OpenURI::HTTPError, URI::BadURIError, ArgumentError rescue => e raise e end end build_warnings(:schema_mismatch, :context, nil, nil, @source_url, schema) if warn_if_unsuccessful @schema = nil end |
#parse_contents(stream, line = nil) ⇒ Object
analyses the provided csv and builds errors, warnings and info messages
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# File 'lib/csvlint/validate.rb', line 174 def parse_contents(stream, line = nil) # parse_contents will parse one line and apply headers, formats methods and error handle as appropriate current_line = line.present? ? line : 1 all_errors = [] @csv_options[:encoding] = @encoding begin row = LineCSV.parse_line(stream, @csv_options) rescue LineCSV::MalformedCSVError => e (e, stream, current_line) end if row if current_line <= 1 && @csv_header # this conditional should be refactored somewhere row = row.reject { |col| col.nil? || col.empty? } validate_header(row) @col_counts << row.size else build_formats(row) @col_counts << row.reject { |col| col.nil? || col.empty? }.size @expected_columns = row.size unless @expected_columns != 0 build_errors(:blank_rows, :structure, current_line, nil, stream.to_s) if row.reject { |c| c.nil? || c.empty? }.size == 0 # Builds errors and warnings related to the provided schema file if @schema @schema.validate_row(row, current_line, all_errors, @source, @validate) @errors += @schema.errors all_errors += @schema.errors @warnings += @schema.warnings else build_errors(:ragged_rows, :structure, current_line, nil, stream.to_s) if !row.empty? && row.size != @expected_columns end end end @data << row end |
#parse_line(line) ⇒ Object
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# File 'lib/csvlint/validate.rb', line 138 def parse_line(line) line = @leading + line # Check if the last line is a line break - in which case it's a full line if line[-1, 1].include?("\n") # If the number of quotes is odd, the linebreak is inside some quotes if line.count(@dialect["quoteChar"]).odd? @leading = line else validate_line(line, @current_line) @leading = "" @current_line = @current_line+1 end else # If it's not a full line, then prepare to add it to the beginning of the next chunk @leading = line end rescue ArgumentError => ae build_errors(:invalid_encoding, :structure, @current_line, nil, @current_line) unless @reported_invalid_encoding @current_line = @current_line+1 @reported_invalid_encoding = true end |
#report_line_breaks(line_no = nil) ⇒ Object
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# File 'lib/csvlint/validate.rb', line 272 def report_line_breaks(line_no=nil) return unless @input[-1, 1].include?("\n") # Return straight away if there's no newline character - i.e. we're on the last line line_break = get_line_break(@input) @line_breaks << line_break unless line_breaks_reported? if line_break != "\r\n" (:nonrfc_line_breaks, :structure, line_no) @line_breaks_reported = true end end end |
#row_count ⇒ Object
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# File 'lib/csvlint/validate.rb', line 334 def row_count data.count end |
#set_dialect ⇒ Object
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# File 'lib/csvlint/validate.rb', line 288 def set_dialect @assumed_header = @dialect["header"].nil? @supplied_dialect = @dialect != {} begin schema_dialect = @schema.tables[@source_url].dialect || {} rescue schema_dialect = {} end @dialect = { "header" => true, "headerRowCount" => 1, "delimiter" => ",", "skipInitialSpace" => true, "lineTerminator" => :auto, "quoteChar" => '"', "trim" => :true }.merge(schema_dialect).merge(@dialect || {}) @csv_header = @csv_header && @dialect["header"] @csv_options = (@dialect) end |
#validate ⇒ Object
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# File 'lib/csvlint/validate.rb', line 89 def validate if @extension =~ /.xls(x)?/ build_warnings(:excel, :context) return end locate_schema unless @schema.instance_of?(Csvlint::Schema) set_dialect if @source.class == String validate_url else validate_stream end finish end |
#validate_encoding ⇒ Object
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# File 'lib/csvlint/validate.rb', line 311 def validate_encoding if @headers["content-type"] if @headers["content-type"] !~ /charset=/ build_warnings(:no_encoding, :context) elsif @headers["content-type"] !~ /charset=utf-8/i build_warnings(:encoding, :context) end end build_warnings(:encoding, :context) if @encoding != "UTF-8" end |
#validate_header(header) ⇒ Object
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# File 'lib/csvlint/validate.rb', line 353 def validate_header(header) names = Set.new header.map{|h| h.strip! } if @dialect["trim"] == :true header.each_with_index do |name,i| build_warnings(:empty_column_name, :schema, nil, i+1) if name == "" if names.include?(name) build_warnings(:duplicate_column_name, :schema, nil, i+1) else names << name end end if @schema @schema.validate_header(header, @source, @validate) @errors += @schema.errors @warnings += @schema.warnings end return valid? end |
#validate_line(input = nil, index = nil) ⇒ Object
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# File 'lib/csvlint/validate.rb', line 160 def validate_line(input = nil, index = nil) @input = input single_col = false line = index.present? ? index : 0 @encoding = input.encoding.to_s report_line_breaks(line) parse_contents(input, line) @lambda.call(self) unless @lambda.nil? rescue ArgumentError => ae build_errors(:invalid_encoding, :structure, @current_line, nil, index) unless @reported_invalid_encoding @reported_invalid_encoding = true end |
#validate_metadata ⇒ Object
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# File 'lib/csvlint/validate.rb', line 225 def assumed_header = !@supplied_dialect unless @headers.empty? if @headers["content-type"] =~ /text\/csv/ @csv_header = @csv_header && true assumed_header = @assumed_header.present? end if @headers["content-type"] =~ /header=(present|absent)/ @csv_header = true if $1 == "present" @csv_header = false if $1 == "absent" assumed_header = false end build_warnings(:no_content_type, :context) if @content_type == nil build_errors(:wrong_content_type, :context) unless (@content_type && @content_type =~ /text\/csv/) end @header_processed = true (:assumed_header, :structure) if assumed_header @link_headers = @headers["link"].split(",") rescue nil @link_headers.each do |link_header| match = LINK_HEADER_REGEXP.match(link_header) uri = match["uri"].gsub(/(^\<|\>$)/, "") rescue nil rel = match["rel-relationship"].gsub(/(^\"|\"$)/, "") rescue nil param = match["param"] param_value = match["param-value"].gsub(/(^\"|\"$)/, "") rescue nil if rel == "describedby" && param == "type" && ["application/csvm+json", "application/ld+json", "application/json"].include?(param_value) begin url = URI.join(@source_url, uri) schema = Schema.load_from_json(url) if schema.instance_of? Csvlint::Csvw::TableGroup if schema.tables[@source_url] @schema = schema else warn_if_unsuccessful = true build_warnings(:schema_mismatch, :context, nil, nil, @source_url, schema) end end rescue OpenURI::HTTPError end end end if @link_headers end |
#validate_stream ⇒ Object
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# File 'lib/csvlint/validate.rb', line 106 def validate_stream @current_line = 1 @source.each_line do |line| break if line_limit_reached? parse_line(line) end validate_line(@leading, @current_line) unless @leading == "" end |
#validate_url ⇒ Object
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# File 'lib/csvlint/validate.rb', line 115 def validate_url @current_line = 1 request = Typhoeus::Request.new(@source, followlocation: true) request.on_headers do |response| @headers = response.headers || {} @content_type = response.headers["content-type"] rescue nil @response_code = response.code return build_errors(:not_found) if response.code == 404 end request.on_body do |chunk| chunk.force_encoding(Encoding::UTF_8) if chunk.encoding == Encoding::ASCII_8BIT io = StringIO.new(chunk) io.each_line do |line| break if line_limit_reached? parse_line(line) end end request.run # Validate the last line too validate_line(@leading, @current_line) unless @leading == "" end |