52 lines
1.2 KiB
Go
52 lines
1.2 KiB
Go
package api
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import (
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"bytes"
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"fmt"
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"net/url"
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"strings"
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"text/template"
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)
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// ResolveRelative combines a url base with a relative path.
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func ResolveRelative(basestr, relstr string) string {
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u, _ := url.Parse(basestr)
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rel, _ := url.Parse(relstr)
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u = u.ResolveReference(rel)
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us := u.String()
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us = strings.Replace(us, "%7B", "{", -1)
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us = strings.Replace(us, "%7D", "}", -1)
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return us
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}
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// ExpandURL subsitutes any {{encoded}} strings in the URL passed in using
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// the map supplied.
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func ExpandURL(u *url.URL, expansions map[string]string) error {
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t, err := template.New("url").Parse(u.Path)
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if err != nil {
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return fmt.Errorf("Parsing template for url path %q failed: %v", u.Path, err)
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}
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var b bytes.Buffer
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if err := t.Execute(&b, expansions); err != nil {
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return fmt.Errorf("Executing template for url path failed: %v", err)
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}
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// set the parameters
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u.Path = b.String()
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// escape the expansions
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for k, v := range expansions {
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expansions[k] = url.QueryEscape(v)
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}
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var bt bytes.Buffer
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if err := t.Execute(&bt, expansions); err != nil {
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return fmt.Errorf("Executing template for url path failed: %v", err)
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}
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// set the parameters
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u.RawPath = bt.String()
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return nil
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}
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