golang regex键：值问题

Question

I'm trying to split a syslog message into a key:value 'map[string]string', but cannot seem to get the regex right.

The source string delimits its keys and values by an '='. However, each pair is seperated by spaces with spaces actually being within the values. I have it pretty close but as you can see from the link below, I can't get the rest of the 'start', 'end', or 'suser' values.

Here's a link to a golang playground showing my exact problem:

package main

import (
    "fmt"
    "regexp"
)

var rex = regexp.MustCompile("(\\w+)=(.+?[^\\\\s\\\\w+=]+)")

func main() {
    conn := "start=Mar 26 2019 10:36:14 +00:00 end=Mar 26 2019 10:36:14 +00:00 suser=AD.COM\\\\Username src=10.1.0.51"
    data := rex.FindAllStringSubmatch(conn, -1)

    res := make(map[string]string)
    for _, kv := range data {
        k := kv[1]
        v := kv[2]
        res[k] = v
    }
    for v := range res {fmt.Printf("%s: %v
", v, res[v])}

}

Answer 1

You may use

 var rex = regexp.MustCompile(`(\w+)=([^=]*\w)(?:\s|$)`)

See the Go demo, the regex demo online and the Regulex graph.

Regex details

• (\w+) - Capturing group 1: one or more word chars
• = - a = char
• ([^=]*\w) - Capturing group 2: any 0+ chars other than = and then a word char
• (?:\s|$) - either a whitespace or end of string.