enable linter using golangci-lint across codebase to run a bunch of linters together, we shall enable new linters as we fix more things the codebase. This PR fixes the first stage of this cleanup.
201 lines
5.3 KiB
Go
201 lines
5.3 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package csv
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import (
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"encoding/xml"
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"errors"
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"fmt"
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"io"
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"strings"
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"unicode/utf8"
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)
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const (
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none = "none"
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use = "use"
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defaultRecordDelimiter = "\n"
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defaultFieldDelimiter = ","
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defaultQuoteCharacter = `"`
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defaultQuoteEscapeCharacter = `"`
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defaultCommentCharacter = "#"
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asneeded = "asneeded"
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)
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// ReaderArgs - represents elements inside <InputSerialization><CSV> in request XML.
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type ReaderArgs struct {
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FileHeaderInfo string `xml:"FileHeaderInfo"`
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RecordDelimiter string `xml:"RecordDelimiter"`
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FieldDelimiter string `xml:"FieldDelimiter"`
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QuoteCharacter string `xml:"QuoteCharacter"`
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QuoteEscapeCharacter string `xml:"QuoteEscapeCharacter"`
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CommentCharacter string `xml:"Comments"`
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AllowQuotedRecordDelimiter bool `xml:"AllowQuotedRecordDelimiter"`
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unmarshaled bool
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}
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// IsEmpty - returns whether reader args is empty or not.
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func (args *ReaderArgs) IsEmpty() bool {
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return !args.unmarshaled
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}
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// UnmarshalXML - decodes XML data.
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func (args *ReaderArgs) UnmarshalXML(d *xml.Decoder, start xml.StartElement) (err error) {
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args.FileHeaderInfo = none
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args.RecordDelimiter = defaultRecordDelimiter
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args.FieldDelimiter = defaultFieldDelimiter
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args.QuoteCharacter = defaultQuoteCharacter
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args.QuoteEscapeCharacter = defaultQuoteEscapeCharacter
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args.CommentCharacter = defaultCommentCharacter
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args.AllowQuotedRecordDelimiter = false
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for {
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// Read tokens from the XML document in a stream.
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t, err := d.Token()
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if err != nil {
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if err == io.EOF {
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break
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}
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return err
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}
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switch se := t.(type) {
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case xml.StartElement:
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tagName := se.Name.Local
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switch tagName {
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case "AllowQuotedRecordDelimiter":
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var b bool
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if err = d.DecodeElement(&b, &se); err != nil {
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return err
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}
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args.AllowQuotedRecordDelimiter = b
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default:
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var s string
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if err = d.DecodeElement(&s, &se); err != nil {
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return err
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}
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switch tagName {
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case "FileHeaderInfo":
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args.FileHeaderInfo = strings.ToLower(s)
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case "RecordDelimiter":
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args.RecordDelimiter = s
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case "FieldDelimiter":
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args.FieldDelimiter = s
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case "QuoteCharacter":
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if utf8.RuneCountInString(s) > 1 {
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return fmt.Errorf("unsupported QuoteCharacter '%v'", s)
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}
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args.QuoteCharacter = s
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case "QuoteEscapeCharacter":
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switch utf8.RuneCountInString(s) {
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case 0:
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args.QuoteEscapeCharacter = defaultQuoteEscapeCharacter
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case 1:
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args.QuoteEscapeCharacter = s
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default:
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return fmt.Errorf("unsupported QuoteEscapeCharacter '%v'", s)
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}
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case "Comments":
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args.CommentCharacter = s
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default:
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return errors.New("unrecognized option")
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}
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}
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}
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}
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args.unmarshaled = true
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return nil
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}
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// WriterArgs - represents elements inside <OutputSerialization><CSV/> in request XML.
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type WriterArgs struct {
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QuoteFields string `xml:"QuoteFields"`
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RecordDelimiter string `xml:"RecordDelimiter"`
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FieldDelimiter string `xml:"FieldDelimiter"`
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QuoteCharacter string `xml:"QuoteCharacter"`
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QuoteEscapeCharacter string `xml:"QuoteEscapeCharacter"`
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unmarshaled bool
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}
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// IsEmpty - returns whether writer args is empty or not.
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func (args *WriterArgs) IsEmpty() bool {
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return !args.unmarshaled
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}
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// UnmarshalXML - decodes XML data.
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func (args *WriterArgs) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
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args.QuoteFields = asneeded
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args.RecordDelimiter = defaultRecordDelimiter
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args.FieldDelimiter = defaultFieldDelimiter
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args.QuoteCharacter = defaultQuoteCharacter
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args.QuoteEscapeCharacter = defaultQuoteCharacter
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for {
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// Read tokens from the XML document in a stream.
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t, err := d.Token()
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if err != nil {
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if err == io.EOF {
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break
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}
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return err
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}
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switch se := t.(type) {
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case xml.StartElement:
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var s string
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if err = d.DecodeElement(&s, &se); err != nil {
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return err
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}
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switch se.Name.Local {
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case "QuoteFields":
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args.QuoteFields = strings.ToLower(s)
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case "RecordDelimiter":
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args.RecordDelimiter = s
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case "FieldDelimiter":
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args.FieldDelimiter = s
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case "QuoteCharacter":
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switch utf8.RuneCountInString(s) {
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case 0:
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args.QuoteCharacter = "\x00"
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case 1:
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args.QuoteCharacter = s
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default:
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return fmt.Errorf("unsupported QuoteCharacter '%v'", s)
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}
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case "QuoteEscapeCharacter":
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switch utf8.RuneCountInString(s) {
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case 0:
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args.QuoteEscapeCharacter = defaultQuoteEscapeCharacter
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case 1:
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args.QuoteEscapeCharacter = s
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default:
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return fmt.Errorf("unsupported QuoteCharacter '%v'", s)
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}
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default:
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return errors.New("unrecognized option")
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}
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}
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}
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args.unmarshaled = true
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return nil
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}
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