How to remove apostrophe/byte marks from string sentences when trying to parse yaml-CodePudding

Live example here

It seems like the yaml parsing library is unable to print " So when i parse a sentence with ", go adds byte apostrophe around it (')

Is there some trick to just have it print/make simple string/quotation string, without the byte apostrophes added?

Example code:

import (
    "fmt"
    "log"

    yaml "gopkg.in/yaml.v3"
)

type X struct {
    Example string `yaml:"some-example"`
}

func main() {
    item := X{
        Example: fmt.Sprint("\"some text\""),
    }

    res, err := yaml.Marshal(item)
    if err != nil {
        log.Fatal(err)
    }
    fmt.Print(string(res))
}

Prints some-example: '"some text"'

Want some-example: "some text"

CodePudding user response：

Is there some trick to just have it print/make simple string/quotation string, without the byte apostrophes added?

Note that you are printing the output of yaml.Marshal, i.e. you are printing a valid YAML document and YAML does not have anything called "byte apostrophes". In YAML strings can be either unquoted, double quoted, or single quoted, regardless, they are all strings.

# all three are strings 
a: foo bar
b: "foo bar"
c: 'foo bar'

So your original output

some-example: '"some text"'

is perfectly valid YAML, and it is not Go that is adding the single quotes, it is the gopkg.in/yaml.v3 package that's doing that.

AFAICT it is not possible to set a global setting for the yaml.Encoder to marshal every string using the double-quoted style, however you can use a custom string that implements yaml.Marshaler to force the yaml.Encoder to always output double quoted strings for any value of that custom type.

For example:

type DoubleQuotedString string

func (s DoubleQuotedString) MarshalYAML() (interface{}, error) {
    return yaml.Node{
        Kind:  yaml.ScalarNode,
        Style: yaml.DoubleQuotedStyle, // <- this is the relevant part
        Value: string(s),
    }, nil
}

https://go.dev/play/p/o9VNL5mKdSl

some-example: "\"some text\""