dotcloud/docker

package client // import "github.com/docker/docker/client"

import (
    "net/url"
    "regexp"

    "github.com/docker/docker/api/types/filters"
)

var headerRegexp = regexp.MustCompile(`\ADocker/.+\s\((.+)\)\z`)

// getDockerOS returns the operating system based on the server header from the daemon.
func getDockerOS(serverHeader string) string {
    var osType string
    matches := headerRegexp.FindStringSubmatch(serverHeader)
    if len(matches) > 0 {
        osType = matches[1]
    }
    return osType
}

// getFiltersQuery returns a url query with "filters" query term, based on the
// filters provided.
func getFiltersQuery(f filters.Args) (url.Values, error) {
    query := url.Values{}
    if f.Len() > 0 {
        filterJSON, err := filters.ToJSON(f)
        if err != nil {
            return query, err
        }
        query.Set("filters", filterJSON)
    }
    return query, nil
}