67 lines
1.7 KiB
Rust
67 lines
1.7 KiB
Rust
// Copyright (c) 2017 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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use crate::util::error::Error;
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use base64;
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/// Codec for plain text content.
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pub struct PlainText;
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impl PlainText {
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pub fn decode(s: &str) -> Result<Option<String>, Error> {
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Ok(match s {
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"" => None,
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text => Some(text.to_owned()),
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})
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}
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pub fn encode(string: &Option<String>) -> Option<String> {
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string.as_ref().map(|text| text.to_owned())
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}
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}
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/// Codec for trimmed plain text content.
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pub struct TrimmedPlainText;
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impl TrimmedPlainText {
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pub fn decode(s: &str) -> Result<String, Error> {
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Ok(match s.trim() {
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"" => return Err(Error::ParseError("URI missing in uri.")),
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text => text.to_owned(),
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})
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}
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pub fn encode(string: &String) -> String {
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string.to_owned()
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}
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}
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/// Codec wrapping base64 encode/decode.
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pub struct Base64;
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impl Base64 {
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pub fn decode(s: &str) -> Result<Vec<u8>, Error> {
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Ok(base64::decode(s)?)
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}
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pub fn encode(b: &Vec<u8>) -> Option<String> {
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Some(base64::encode(b))
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}
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}
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/// Codec wrapping base64 encode/decode, while ignoring whitespace characters.
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pub struct WhitespaceAwareBase64;
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impl WhitespaceAwareBase64 {
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pub fn decode(s: &str) -> Result<Vec<u8>, Error> {
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let s: String = s.chars().into_iter().filter(|ch| *ch != ' ' && *ch != '\n' && *ch != '\t').collect();
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Ok(base64::decode(&s)?)
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}
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pub fn encode(b: &Vec<u8>) -> Option<String> {
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Some(base64::encode(b))
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}
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}
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