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128 lines
3.1 KiB
Rust
128 lines
3.1 KiB
Rust
//! Gopher type "borrowed" from phetch.
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use std::fmt;
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/// Gopher types are defined according to RFC 1436.
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#[allow(missing_docs)]
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#[derive(Copy, Clone, PartialEq, Debug)]
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pub enum Type {
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Text, // 0
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Menu, // 1
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CSOEntity, // 2
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Error, // 3
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Binhex, // 4
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DOSFile, // 5
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UUEncoded, // 6
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Search, // 7
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Telnet, // 8
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Binary, // 9
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Mirror, // +
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GIF, // g
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Telnet3270, // T
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HTML, // h
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Image, // I
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PNG, // p
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Info, // i
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Sound, // s
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Document, // d
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}
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impl Type {
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/// Is this an info line?
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pub fn is_info(self) -> bool {
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self == Type::Info
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}
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/// Text document?
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pub fn is_text(self) -> bool {
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self == Type::Text
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}
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/// HTML link?
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pub fn is_html(self) -> bool {
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self == Type::HTML
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}
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/// Telnet link?
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pub fn is_telnet(self) -> bool {
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self == Type::Telnet
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}
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/// Is this a link, ie something we can navigate to or open?
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pub fn is_link(self) -> bool {
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!self.is_info()
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}
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/// Is this something we can download?
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pub fn is_download(self) -> bool {
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match self {
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Type::Binhex
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| Type::DOSFile
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| Type::UUEncoded
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| Type::Binary
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| Type::GIF
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| Type::Image
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| Type::PNG
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| Type::Sound
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| Type::Document => true,
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_ => false,
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}
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}
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/// Gopher Item Type to RFC char.
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pub fn to_char(self) -> char {
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match self {
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Type::Text => '0',
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Type::Menu => '1',
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Type::CSOEntity => '2',
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Type::Error => '3',
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Type::Binhex => '4',
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Type::DOSFile => '5',
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Type::UUEncoded => '6',
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Type::Search => '7',
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Type::Telnet => '8',
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Type::Binary => '9',
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Type::Mirror => '+',
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Type::GIF => 'g',
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Type::Telnet3270 => 'T',
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Type::HTML => 'h',
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Type::Image => 'I',
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Type::PNG => 'p',
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Type::Info => 'i',
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Type::Sound => 's',
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Type::Document => 'd',
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}
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}
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/// Create a Gopher Item Type from its RFC char code.
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pub fn from(c: char) -> Option<Type> {
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Some(match c {
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'0' => Type::Text,
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'1' => Type::Menu,
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'2' => Type::CSOEntity,
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'3' => Type::Error,
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'4' => Type::Binhex,
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'5' => Type::DOSFile,
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'6' => Type::UUEncoded,
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'7' => Type::Search,
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'8' => Type::Telnet,
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'9' => Type::Binary,
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'+' => Type::Mirror,
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'g' => Type::GIF,
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'T' => Type::Telnet3270,
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'h' => Type::HTML,
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'I' => Type::Image,
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'p' => Type::PNG,
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'i' => Type::Info,
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's' => Type::Sound,
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'd' => Type::Document,
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_ => return None,
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})
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}
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}
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impl fmt::Display for Type {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "{}", self.to_char())
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}
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}
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