65 lines
1.8 KiB
Go
65 lines
1.8 KiB
Go
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package httptoo
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import (
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"net/http"
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"net/url"
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)
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// Deep copies a URL. I could call it DeepCopyURL, but what else would you be
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// copying when you have a *url.URL? Of note is that the Userinfo is deep
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// copied. The returned URL shares no references with the original.
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func CopyURL(u *url.URL) (ret *url.URL) {
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ret = new(url.URL)
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*ret = *u
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if u.User != nil {
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ret.User = new(url.Userinfo)
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*ret.User = *u.User
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}
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return
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}
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// Reconstructs the URL that would have produced the given Request.
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// Request.URLs are not fully populated in http.Server handlers.
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func RequestedURL(r *http.Request) (ret *url.URL) {
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ret = CopyURL(r.URL)
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ret.Host = r.Host
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ret.Scheme = OriginatingProtocol(r)
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return
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}
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// The official URL struct parameters, for tracking changes and reference
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// here.
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//
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// Scheme string
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// Opaque string // encoded opaque data
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// User *Userinfo // username and password information
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// Host string // host or host:port
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// Path string
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// RawPath string // encoded path hint (Go 1.5 and later only; see EscapedPath method)
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// ForceQuery bool // append a query ('?') even if RawQuery is empty
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// RawQuery string // encoded query values, without '?'
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// Fragment string // fragment for references, without '#'
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// Return the first URL extended with elements of the second, in the manner
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// that occurs throughout my projects. Noteworthy difference from
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// url.URL.ResolveReference is that if the reference has a scheme, the base is
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// not completely ignored.
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func AppendURL(u, v *url.URL) *url.URL {
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u = CopyURL(u)
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clobberString(&u.Scheme, v.Scheme)
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clobberString(&u.Host, v.Host)
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u.Path += v.Path
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q := u.Query()
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for k, v := range v.Query() {
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q[k] = append(q[k], v...)
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}
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u.RawQuery = q.Encode()
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return u
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}
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func clobberString(s *string, value string) {
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if value != "" {
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*s = value
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}
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}
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