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// Copyright 2013 Canonical Ltd. This software is licensed under the
// GNU Lesser General Public License version 3 (see the file COPYING).
package gwacl
import (
"fmt"
"net/url"
)
// checkPathComponents checks that none of the passed components contains any
// special characters, where special means "needs percent-encoding in a URI",
// does not contain any forward slashes, and is not the string "..".
func checkPathComponents(components ...string) {
for _, component := range components {
if component != url.QueryEscape(component) {
panic(fmt.Errorf("'%s' contains URI special characters", component))
}
if component == ".." {
panic(fmt.Errorf("'..' is not allowed"))
}
}
}
// addURLQueryParams adds query parameters to a URL (and escapes as needed).
// Parameters are URL, [key, value, [key, value, [...]]].
// The original URL must be correct, i.e. it should parse without error.
func addURLQueryParams(originalURL string, params ...string) string {
if len(params)%2 != 0 {
panic(fmt.Errorf("got %d parameter argument(s), instead of matched key/value pairs", len(params)))
}
parsedURL, err := url.Parse(originalURL)
if err != nil {
panic(err)
}
query := parsedURL.Query()
for index := 0; index < len(params); index += 2 {
key := params[index]
value := params[index+1]
query.Add(key, value)
}
parsedURL.RawQuery = query.Encode()
return parsedURL.String()
}
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