Add gemtext helpers for headers and responses

Dependencies

• [2] BOFUYB6I Add documentation and implement some feedback from Discord (https://discord.com/channels/273534239310479360/354038657075904544/796256815024701480)
• [3] 5II6T7YE Add gemini library

Change contents

• edit in gemini/src/response.rs at line 9
  [2.10851]

  [2.10851]
  + gemtext::Builder,
• edit in gemini/src/response.rs at line 43
  [3.5971]

  [3.5971]
  +

  + // TODO: add some built-in mime-types for more infallible constructors?
• replacement in gemini/src/response.rs at line 47
  [2.11542]→[2.11542:11650](∅→∅)
  − pub fn with_body(header: Header, body: Vec<u8>) -> Option<Self> {

  − Self::new(header, Some(body))
  [2.11542]

  [3.6070]
  + pub fn with_body(mime_type: String, body: Vec<u8>) -> Option<Self> {

  + let header = Header::new(Status::SUCCESS, mime_type)?;

  + let body = Some(body);

  + Some(Response { header, body })

  + }

  +

  + /// Construct a new response with a gemtext body.

  + pub fn with_gemtext(builder: Builder) -> Self {

  + let header = Header::gemtext();

  + let body = Some(builder.build().bytes().collect());

  + Self::new_unchecked(header, body)
• replacement in gemini/src/header.rs at line 78
  [3.9229]→[3.9229:9482](∅→∅)
  − MetaKind::MimeType => Some({

  − let meta = self.meta();

  − if meta.trim().is_empty() {

  − Self::DEFAULT_MIME_TYPE

  − } else {

  − meta

  − }

  − }),
  [3.9229]

  [3.9482]
  + MetaKind::MimeType => Some(self.meta()),
• edit in gemini/src/header.rs at line 89
  [3.9630]

  [3.9630]
  + let meta = match status {

  + Status::SUCCESS if meta.trim().is_empty() => Self::DEFAULT_MIME_TYPE.to_string(),

  + _ => meta,

  + };
• edit in gemini/src/header.rs at line 98
  [3.9722]

  [3.9722]
  +

  + /// Construct a `Status::SUCCESS` header with the given mime-type.

  + pub fn success(mime_type: String) -> Option<Self> {

  + Self::new(Status::SUCCESS, mime_type)

  + }

  +

  + /// Construct a `Status::SUCCESS` header with the text/gemini mime-type.

  + pub fn gemtext() -> Self {

  + let status = Status::SUCCESS;

  + let meta = Self::DEFAULT_MIME_TYPE.to_string();

  + Header { status, meta }

  + }