base64: encode_url (#6622)
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31ef921ef2
commit
df82ef6bc7
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@ -48,6 +48,26 @@ pub fn encode(data string) string {
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return tos(buffer, encode_in_buffer(data, buffer))
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}
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// decode decodes base64url string to string
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pub fn decode_url(data string) string {
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mut result := data.replace('-', '+') // 62nd char of encoding
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result = data.replace('_', '/') // 63rd char of encoding
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match result.len % 4 { // Pad with trailing '='s
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2 { result += "==" } // 2 pad chars
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3 { result += "=" } // 1 pad char
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else { } // no padding
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}
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return base64.decode(data)
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}
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// encode encodes given string to base64url string
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pub fn encode_url(data string) string {
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mut result := base64.encode(data)
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// 62nd char of encoding, 63rd char of encoding, remove any trailing '='s
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result = result.replace_each(['+', '-', '/', '_', '=', ''])
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return result
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}
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/*
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decode_in_buffer - expects a string reference, and a buffer in which to store its decoded version.
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@param data - a reference/pointer to the input string that will be decoded.
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@ -67,3 +67,13 @@ fn test_encode() {
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}
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}
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}
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fn test_encode_url() {
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test := base64.encode_url('Hello Base64Url encoding!')
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assert test == 'SGVsbG8gQmFzZTY0VXJsIGVuY29kaW5nIQ'
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}
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fn test_decode_url() {
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test := base64.decode_url("SGVsbG8gQmFzZTY0VXJsIGVuY29kaW5nIQ")
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assert test == 'Hello Base64Url encoding!'
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}
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