Parsing structured data in golang

Question

I have a well-formatted byte array that has rows and columns as follows (note that the columns are separated by spaces). The column names and order are guaranteed:

NAME       UUID                                  TYPE      DEVICE 
WAN        6a62d79f-fba2-45b3-a3dd-e847c4706d96  ethernet  ens18  
DMZ        46a55117-b545-407e-af6e-25d48dfe95f5  ethernet  ens21  
LAN        1691607b-9b73-46ff-95c4-9652d062706a  ethernet  ens19  
MGT        a4819491-243c-4e5b-8cef-a49de5a9cb07  ethernet  ens22  
Untrusted  0734a0ea-c242-4333-bece-2b5cb16e3337  ethernet  ens20 

I would like to iterate over each row and populate a structure as follows:

type Device struct {
    connectionID string
    uuid         string
    deviceType   string
    deviceName   string
}

What is the best way to approach this?

Answer 1

I thought I would add the code for the comment I wrote above:

type Device struct {
    connectionID   string
    uuid           string
    deviceType     string
    deviceName     string
}

type Devices []Device

// getNetworkConnections retrieves a list of network connections and their associated details.
// Details include: connection name, uuid, type, and device id (aka NIC name).
func getNetworkConnections() Devices {
    nmcliCmd := exec.Command("nmcli", "con", "show")
    cmdOutput, err := nmcliCmd.Output()
    if err != nil {
        log.Fatal(err)
    }

    // Iterate through the devices and populate the type.
    var device Device

    rows := strings.Split(string(cmdOutput[:]), "\n") // Create an array of rows containing the output
    for _, row := range rows[1:] {                    // Skip the heading row and iterate through the remaining rows
        cols := strings.Fields(row) // Extract each column from the row.
        if len(cols) == 4 {
            device.connectionID = cols[0]
            device.uuid = cols[1]
            device.deviceType = cols[2]
            device.deviceName = cols[3]
            devices = append(devices, device)
        }
    }

    return devices
}