76 lines
2.1 KiB
Go
76 lines
2.1 KiB
Go
package httputils // import "github.com/docker/docker/api/server/httputils"
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import (
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"net/http"
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"strconv"
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"strings"
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)
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// BoolValue transforms a form value in different formats into a boolean type.
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func BoolValue(r *http.Request, k string) bool {
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s := strings.ToLower(strings.TrimSpace(r.FormValue(k)))
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return !(s == "" || s == "0" || s == "no" || s == "false" || s == "none")
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}
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// BoolValueOrDefault returns the default bool passed if the query param is
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// missing, otherwise it's just a proxy to boolValue above.
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func BoolValueOrDefault(r *http.Request, k string, d bool) bool {
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if _, ok := r.Form[k]; !ok {
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return d
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}
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return BoolValue(r, k)
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}
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// Int64ValueOrZero parses a form value into an int64 type.
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// It returns 0 if the parsing fails.
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func Int64ValueOrZero(r *http.Request, k string) int64 {
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val, err := Int64ValueOrDefault(r, k, 0)
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if err != nil {
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return 0
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}
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return val
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}
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// Int64ValueOrDefault parses a form value into an int64 type. If there is an
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// error, returns the error. If there is no value returns the default value.
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func Int64ValueOrDefault(r *http.Request, field string, def int64) (int64, error) {
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if r.Form.Get(field) != "" {
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value, err := strconv.ParseInt(r.Form.Get(field), 10, 64)
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return value, err
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}
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return def, nil
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}
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// ArchiveOptions stores archive information for different operations.
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type ArchiveOptions struct {
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Name string
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Path string
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}
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type badParameterError struct {
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param string
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}
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func (e badParameterError) Error() string {
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return "bad parameter: " + e.param + "cannot be empty"
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}
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func (e badParameterError) InvalidParameter() {}
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// ArchiveFormValues parses form values and turns them into ArchiveOptions.
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// It fails if the archive name and path are not in the request.
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func ArchiveFormValues(r *http.Request, vars map[string]string) (ArchiveOptions, error) {
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if err := ParseForm(r); err != nil {
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return ArchiveOptions{}, err
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}
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name := vars["name"]
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if name == "" {
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return ArchiveOptions{}, badParameterError{"name"}
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}
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path := r.Form.Get("path")
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if path == "" {
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return ArchiveOptions{}, badParameterError{"path"}
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}
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return ArchiveOptions{name, path}, nil
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}
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