Golang正则表达式，用于将键值对解析为字符串映射

Question

I'm looking to parse the following string into a map[string]string using a regular expression:

time="2017-05-30T19:02:08-05:00" level=info msg="some log message" app=sample size=10

I'm trying to create a map that would have

m["time"] = "2017-05-30T19:02:08-05:00"
m["level"] = "info"

etc

I have tried using regex.FindAllStringIndex but can't quite come up with an appropriate regex? Is this the correct way to go?

Answer 1

This is not using regex but is just an example of how to achieve the same by using strings.FieldsFunc.

https://play.golang.org/p/rr6U8xTJZT

package main

import (
    "fmt"
    "strings"
    "unicode"
)

const foo = `time="2017-05-30T19:02:08-05:00" level=info msg="some log message" app=sample size=10`

func main() {
    lastQuote := rune(0)
    f := func(c rune) bool {
        switch {
        case c == lastQuote:
            lastQuote = rune(0)
            return false
        case lastQuote != rune(0):
            return false
        case unicode.In(c, unicode.Quotation_Mark):
            lastQuote = c
            return false
        default:
            return unicode.IsSpace(c)

        }
    }

    // splitting string by space but considering quoted section
    items := strings.FieldsFunc(foo, f)

    // create and fill the map
    m := make(map[string]string)
    for _, item := range items {
        x := strings.Split(item, "=")
        m[x[0]] = x[1]
    }

    // print the map
    for k, v := range m {
        fmt.Printf("%s: %s
", k, v)
    }
}