41 lines
1.1 KiB
Go
41 lines
1.1 KiB
Go
package store
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import (
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"errors"
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"regexp"
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"strings"
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)
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var slugRE = regexp.MustCompile(`^[a-zA-Z0-9][a-zA-Z0-9-_]{0,63}$`)
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// reserved words that would collide with routes
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var reservedSlugs = map[string]bool{
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"api": true, "raw": true, "public": true,
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"history": true, "static": true, "assets": true, "favicon.ico": true,
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"new": true, "login": true, "logout": true, "admin": true, "settings": true,
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"mine": true, "saved": true, "unlock": true, "guess": true, "f": true,
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}
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var ErrInvalidSlug = errors.New("custom slug must be 1-64 chars: letters, digits, dash, underscore; must start with letter or digit")
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var ErrReservedSlug = errors.New("that slug is reserved")
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var ErrSlugTaken = errors.New("that slug is already taken")
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func ValidateCustomSlug(slug string) error {
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if !slugRE.MatchString(slug) {
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return ErrInvalidSlug
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}
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if reservedSlugs[strings.ToLower(slug)] {
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return ErrReservedSlug
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}
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return nil
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}
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func (s *Store) SlugTaken(slug string) (bool, error) {
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var n int
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err := s.db.QueryRow(`SELECT COUNT(*) FROM pastes WHERE custom_slug = ? OR id = ?`, slug, slug).Scan(&n)
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if err != nil {
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return false, err
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}
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return n > 0, nil
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}
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