You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: url.go
    path of file: ./repos/fq/format/text
    
    the code of the file until where you have to start completion: package text

import (
	"net/url"

	"github.com/wader/fq/internal/gojqex"
	"github.com/wader/fq/pkg/interp"
)

func init() {
	interp.RegisterFunc0("from_urlencode", func(_ *interp.Interp, c string) any {
		u, err := url.QueryUnescape(c)
		if err != nil {
			return err
		}
		return u
	})
	interp.RegisterFunc0("to_urlencode", func(_ *interp.Interp, c string) any {
		return url.QueryEscape(c)
	})

	interp.RegisterFunc0("from_urlpath", func(_ *interp.Interp, c string) any {
		u, err := url.PathUnescape(c)
		if err != nil {
			return err
		}
		return u
	})
	interp.RegisterFunc0("to_urlpath", func(_ *interp.Interp, c string) any {
		return url.PathEscape(c)
	})

	fromURLValues := func(q url.Values) any {
		qm := map[string]any{}
		for k, v := range q {
			if len(v) > 1 {
				vm := []any{}
				for _, v := range v {
					vm = append(vm, v)
				}
				qm[k] = vm
			} else {
				qm[k] = v[0]
			}
		}

		return qm
	}
	interp.RegisterFunc0("from_urlquery", func(_ *interp.Inter
    
func init() {
	interp.RegisterFunc0("from_urlencode", func(_ *interp.Interp, c string) any {
		u, err := url.QueryUnescape(c)
		if err != nil {
			return err
		}
		return u
	})
	interp.RegisterFunc0("to_urlencode", func(_ *interp.Interp, c string) any {
		return url.QueryEscape(c)
	})

	interp.RegisterFunc0("from_urlpath", func(_ *interp.Interp, c string) any {
		u, err := url.PathUnescape(c)
		if err != nil {
			return err
		}
		return u
	})
	interp.RegisterFunc0("to_urlpath", func(_ *interp.Interp, c string) any {
		return url.PathEscape(c)
	})

	fromURLValues := func(q url.Values) any {
		qm := map[string]any{}
		for k, v := range q {
			if len(v) > 1 {
				vm := []any{}
				for _, v := range v {
					vm = append(vm, v)
				}
				qm[k] = vm
			} else {
				qm[k] = v[0]
			}
		}

		return qm
	}
	interp.RegisterFunc0("from_urlquery", func(_ *interp.Interp, c string) any {
		q, err := url.ParseQuery(c)
		if err != nil {
			return err
		}
		return fromURLValues(q)
	})
	toURLValues := func(c map[string]any) url.Values {
		qv := url.Values{}
		for k, v := range c {
			if va, ok := gojqex.Cast[[]any](v); ok {
				var ss []string
				for _, s := range va {
					if s, ok := gojqex.Cast[string](s); ok {
						ss = append(ss, s)
					}
				}
				qv[k] = ss
			} else if vs, ok := gojqex.Cast[string](v); ok {
				qv[k] = []string{vs}
			}
		}
		return qv
	}
	interp.RegisterFunc0("to_urlquery", func(_ *interp.Interp, c map[string]any) any {
		// TODO: nicer
		c, ok := gojqex.NormalizeToStrings(c).(map[string]any)
		if !ok {
			panic("not map")
		}
		return toURLValues(c).Encode()
	})

	interp.RegisterFunc0("from_url", func(_ *interp.Interp, c string) any {
		u, err := url.Parse(c)
		if err != nil {
			return err
		}

		m := map[string]any{}
		if u.Scheme != "" {
			m["scheme"] = u.Scheme
		}
		if u.User != nil {
			um := map[string]any{
				"username": u.User.Username(),
			}
			if p, ok := u.User.Password(); ok {
				um["password"] = p
			}
			m["user"] = um
		}
		if u.Host != "" {
			m["host"] = u.Host
		}
		if u.Path != "" {
			m["path"] = u.Path
		}
		if u.RawPath != "" {
			m["rawpath"] = u.RawPath
		}
		if u.RawQuery != "" {
			m["rawquery"] = u.RawQuery
			m["query"] = fromURLValues(u.Query())
		}
		if u.Fragment != "" {
			m["fragment"] = u.Fragment
		}
		return m
	})
	interp.RegisterFunc0("to_url", func(_ *interp.Interp, c map[string]any) any {
		// TODO: nicer
		c, ok := gojqex.NormalizeToStrings(c).(map[string]any)
		if !ok {
			panic("not map")
		}

		str := func(v any) string { s, _ := gojqex.Cast[string](v); return s }
		u := url.URL{
			Scheme:   str(c["scheme"]),
			Host:     str(c["host"]),
			Path:     str(c["path"]),
			Fragment: str(c["fragment"]),
		}

		if um, ok := gojqex.Cast[map[string]any](c["user"]); ok {
			username, password := str(um["username"]), str(um["password"])
			if username != "" {
				if password == "" {
					u.User = url.User(username)
				} else {
					u.User = url.UserPassword(username, password)
				}
			}
		}
		if s, ok := gojqex.Cast[string](c["rawquery"]); ok {
			u.RawQuery = s
		}
		if qm, ok := gojqex.Cast[map[string]any](c["query"]); ok {
			u.RawQuery = toURLValues(qm).Encode()
		}

		return u.String()
	})
}