Monorepo for Tangled
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898 B · 49 lines
Go
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import ( "fmt" "net/http" "strconv"
"tangled.org/core/knotserver/db")
func parseListParams(r *http.Request) (db.ListPage, error) { q := r.URL.Query() p := db.ListPage{Limit: db.ListDefaultLimit, Desc: true}
if s := q.Get("limit"); s != "" { n, err := strconv.Atoi(s) if err != nil { return p, fmt.Errorf("limit must be an integer") } p.Limit = min(max(n, 1), db.ListMaxLimit) }
if s := q.Get("cursor"); s != "" { n, err := strconv.Atoi(s) if err != nil { return p, fmt.Errorf("cursor must be an integer") } p.Cursor = &n }
switch q.Get("order") { case "", "desc": p.Desc = true case "asc": p.Desc = false default: return p, fmt.Errorf("order must be 'asc' or 'desc'") }
return p, nil}
func mapSlice[T, U any](items []T, f func(T) U) []U { out := make([]U, len(items)) for i, it := range items { out[i] = f(it) } return out}