mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
138 lines
2.9 KiB
Go
138 lines
2.9 KiB
Go
package opts
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import (
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"fmt"
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"github.com/dotcloud/docker/utils"
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"os"
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"path/filepath"
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"regexp"
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"strings"
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)
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// ListOpts type
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type ListOpts struct {
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values []string
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validator ValidatorFctType
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}
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func NewListOpts(validator ValidatorFctType) ListOpts {
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return ListOpts{
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validator: validator,
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}
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}
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func (opts *ListOpts) String() string {
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return fmt.Sprintf("%v", []string(opts.values))
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}
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// Set validates if needed the input value and add it to the
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// internal slice.
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func (opts *ListOpts) Set(value string) error {
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if opts.validator != nil {
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v, err := opts.validator(value)
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if err != nil {
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return err
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}
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value = v
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}
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opts.values = append(opts.values, value)
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return nil
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}
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// Delete remove the given element from the slice.
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func (opts *ListOpts) Delete(key string) {
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for i, k := range opts.values {
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if k == key {
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opts.values = append(opts.values[:i], opts.values[i+1:]...)
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return
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}
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}
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}
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// GetMap returns the content of values in a map in order to avoid
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// duplicates.
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// FIXME: can we remove this?
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func (opts *ListOpts) GetMap() map[string]struct{} {
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ret := make(map[string]struct{})
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for _, k := range opts.values {
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ret[k] = struct{}{}
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}
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return ret
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}
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// GetAll returns the values' slice.
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// FIXME: Can we remove this?
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func (opts *ListOpts) GetAll() []string {
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return opts.values
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}
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// Get checks the existence of the given key.
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func (opts *ListOpts) Get(key string) bool {
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for _, k := range opts.values {
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if k == key {
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return true
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}
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}
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return false
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}
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// Len returns the amount of element in the slice.
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func (opts *ListOpts) Len() int {
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return len(opts.values)
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}
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// Validators
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type ValidatorFctType func(val string) (string, error)
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func ValidateAttach(val string) (string, error) {
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if val != "stdin" && val != "stdout" && val != "stderr" {
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return val, fmt.Errorf("Unsupported stream name: %s", val)
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}
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return val, nil
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}
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func ValidateLink(val string) (string, error) {
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if _, err := utils.PartParser("name:alias", val); err != nil {
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return val, err
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}
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return val, nil
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}
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func ValidatePath(val string) (string, error) {
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var containerPath string
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if strings.Count(val, ":") > 2 {
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return val, fmt.Errorf("bad format for volumes: %s", val)
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}
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splited := strings.SplitN(val, ":", 2)
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if len(splited) == 1 {
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containerPath = splited[0]
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val = filepath.Clean(splited[0])
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} else {
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containerPath = splited[1]
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val = fmt.Sprintf("%s:%s", splited[0], filepath.Clean(splited[1]))
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}
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if !filepath.IsAbs(containerPath) {
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return val, fmt.Errorf("%s is not an absolute path", containerPath)
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}
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return val, nil
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}
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func ValidateEnv(val string) (string, error) {
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arr := strings.Split(val, "=")
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if len(arr) > 1 {
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return val, nil
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}
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return fmt.Sprintf("%s=%s", val, os.Getenv(val)), nil
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}
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func ValidateIp4Address(val string) (string, error) {
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re := regexp.MustCompile(`^(([0-9]+\.){3}([0-9]+))\s*$`)
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var ns = re.FindSubmatch([]byte(val))
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if len(ns) > 0 {
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return string(ns[1]), nil
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}
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return "", fmt.Errorf("%s is not an ip4 address", val)
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}
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