mirror of
https://github.com/garethgeorge/backrest.git
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df4be0f7bc
* Fixes a problem with incorrectly scanning and removing pending events from the operation log for new installations * Fixes a bug with the operation tree incorrectly applying query selectors when filtering events * Updates tooltips and comments in PlanView and GettingStartedGuide
44 lines
1.2 KiB
Go
44 lines
1.2 KiB
Go
package validationutil
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import (
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"errors"
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"fmt"
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"regexp"
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"strings"
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)
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var (
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IDMaxLen = 50 // maximum length of an ID
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sanitizeIDRegex = regexp.MustCompile(`[^a-zA-Z0-9_\-\.]+`) // matches invalid characters in an ID
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idRegex = regexp.MustCompile(`[a-zA-Z0-9_\-\.]*`) // matches a valid ID (including empty string)
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)
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var (
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ErrEmpty = errors.New("empty")
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ErrTooLong = errors.New("too long")
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ErrInvalidChars = errors.New("contains invalid characters")
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)
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func SanitizeID(id string) string {
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return sanitizeIDRegex.ReplaceAllString(id, "_")
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}
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// ValidateID checks if an ID is valid.
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// It returns an error if the ID contains invalid characters, is empty, or is too long.
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// The maxLen parameter is the maximum length of the ID. If maxLen is 0, the ID length is not checked.
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func ValidateID(id string, maxLen int) error {
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if strings.HasPrefix(id, "_") && strings.HasSuffix(id, "_") {
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return errors.New("IDs starting and ending with '_' are reserved by backrest")
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}
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if !idRegex.MatchString(id) {
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return ErrInvalidChars
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}
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if len(id) == 0 {
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return ErrEmpty
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}
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if maxLen > 0 && len(id) > maxLen {
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return fmt.Errorf("(> %d chars): %w", maxLen, ErrTooLong)
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}
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return nil
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}
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