smtp-codec 0.2.0

Low-level SMTP Parser and Serializer
Documentation 
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use std::borrow::Cow;

pub(crate) fn escape_quoted(unescaped: &str) -> Cow<str> {
    let mut escaped = Cow::Borrowed(unescaped);

    if escaped.contains('\\') {
        escaped = Cow::Owned(escaped.replace("\\", "\\\\"));
    }

    if escaped.contains('\"') {
        escaped = Cow::Owned(escaped.replace("\"", "\\\""));
    }

    escaped
}

pub(crate) fn unescape_quoted(escaped: &str) -> Cow<str> {
    let mut unescaped = Cow::Borrowed(escaped);

    if unescaped.contains("\\\\") {
        unescaped = Cow::Owned(unescaped.replace("\\\\", "\\"));
    }

    if unescaped.contains("\\\"") {
        unescaped = Cow::Owned(unescaped.replace("\\\"", "\""));
    }

    unescaped
}