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sql: Add support of escape quote in CSV (#9231)

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This commit modifies csv parser, a fork of golang csv
parser to support a custom quote escape character.

The quote escape character is used to escape the quote
character when a csv field contains a quote character
as part of data.
This commit is contained in:
Anis Elleuch
2020-04-01 23:39:34 +01:00
committed by GitHub
parent 7de29e6e6b
commit 9902c9baaa
12 changed files with 153 additions and 64 deletions
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20
pkg/s3select/csv/args.go
View File

@@ -104,8 +104,15 @@ func (args *ReaderArgs) UnmarshalXML(d *xml.Decoder, start xml.StartElement) (er
return fmt.Errorf("unsupported QuoteCharacter '%v'", s)
}
args.QuoteCharacter = s
// Not supported yet
case "QuoteEscapeCharacter":
switch utf8.RuneCountInString(s) {
case 0:
args.QuoteEscapeCharacter = defaultQuoteEscapeCharacter
case 1:
args.QuoteEscapeCharacter = s
default:
return fmt.Errorf("unsupported QuoteEscapeCharacter '%v'", s)
}
case "Comments":
args.CommentCharacter = s
default:
@@ -115,7 +122,6 @@ func (args *ReaderArgs) UnmarshalXML(d *xml.Decoder, start xml.StartElement) (er
}
}
args.QuoteEscapeCharacter = args.QuoteCharacter
args.unmarshaled = true
return nil
}
@@ -176,15 +182,21 @@ func (args *WriterArgs) UnmarshalXML(d *xml.Decoder, start xml.StartElement) err
default:
return fmt.Errorf("unsupported QuoteCharacter '%v'", s)
}
// Not supported yet
case "QuoteEscapeCharacter":
switch utf8.RuneCountInString(s) {
case 0:
args.QuoteEscapeCharacter = defaultQuoteEscapeCharacter
case 1:
args.QuoteEscapeCharacter = s
default:
return fmt.Errorf("unsupported QuoteCharacter '%v'", s)
}
default:
return errors.New("unrecognized option")
}
}
}
args.QuoteEscapeCharacter = args.QuoteCharacter
args.unmarshaled = true
return nil
}