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Greek and Slavic usage, and the marks the books print

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Both keep the same Typikon and read it a little differently, and until now
this library silently picked one reading and called it the Typikon. Two
differences are modelled, each one visible in the output and named in the
day's reason:

  - The Protection of the Theotokos is a great feast in Slavic usage. Greek
    practice ranks it lower, and the Church of Greece keeps it on 28 October
    besides. This has teeth: rank is what lifts a Wednesday or Friday fast.
  - Greek practice admits fish on any day of the Nativity Fast but Wednesday
    and Friday until 17 December; Slavic practice keeps fish to Saturdays and
    Sundays throughout.

Every jurisdiction carries the usage its books follow, and --tradition
overrides it for a parish that does not match its jurisdiction's default. The
difference in the calendar lives in a data overlay compiled in beside the
common menologion, which is where a local church's own commemorations would
go; the difference in the fast lives in the rule, because that is where it is.

Each rank also now carries the mark the books print beside it, circled cross,
cross and Jerusalem cross for great, vigil and polyeleos. Unicode has no glyph
for the polyeleos sign, a cross over a half-circle, so the Jerusalem cross
stands in as digital calendars generally settle on.
This commit is contained in:
funkpower
2026-09-18 11:28:40 -04:00
parent 5d7e02cffb
commit 56cc1a3d92
12 changed files with 241 additions and 38 deletions
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src/jurisdictions.rs
+66 -26
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@@ -30,6 +30,44 @@ pub enum MenologionKind {
RevisedJulian,
}
/// Greek or Slavic usage. Both keep the same Typikon; they read it a little
/// differently, and the differences are small, real and printed in every
/// calendar that takes a side.
///
/// Two are modelled here:
///
/// - **The Protection of the Theotokos**, 1 October, is a great feast in
/// Slavic usage. Greek practice ranks it lower, and the Church of Greece
/// keeps it on 28 October besides.
/// - **Fish in the Nativity Fast.** Greek practice permits fish on any day but
/// Wednesday and Friday until 17 December; Slavic practice keeps fish to
/// Saturdays and Sundays throughout.
///
/// The split is coarse: a church is assigned the usage its books follow, and
/// no jurisdiction is wholly one thing. Override it with `--tradition`.
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub enum Tradition {
Slavic,
Greek,
}
impl Tradition {
pub fn key(self) -> &'static str {
match self {
Tradition::Slavic => "slavic",
Tradition::Greek => "greek",
}
}
pub fn parse(s: &str) -> Option<Tradition> {
match s.trim().to_ascii_lowercase().as_str() {
"slavic" | "russian" | "slav" => Some(Tradition::Slavic),
"greek" | "byzantine" => Some(Tradition::Greek),
_ => None,
}
}
}
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub enum RuleKind {
Orthodox,
@@ -61,6 +99,7 @@ pub struct Jurisdiction {
pub paschalion: Paschalion,
pub menologion: MenologionKind,
pub rule: RuleKind,
pub tradition: Tradition,
/// Supplementary commemoration sets to overlay, fetched not shipped.
pub menaia: &'static [&'static str],
pub note: &'static str,
@@ -101,59 +140,60 @@ impl Jurisdiction {
use MenologionKind::{Julian as JulMen, RevisedJulian as RevJul};
use Paschalion::{Gregorian as GregP, Julian as JulP};
use RuleKind::{Orthodox as Orth, Ruthenian as Ruth};
use Tradition::{Greek as Gk, Slavic as Sl};
const NO_MENAIA: &[&str] = &[];
const RUTHENIAN_MENAIA: &[&str] = &["ruthenian"];
/// A reckoning without naming a church. `new` is the default.
pub const CALENDARS: &[Jurisdiction] = &[
Jurisdiction { key: "old", name: "Old Calendar", paschalion: JulP, menologion: JulMen, rule: Orth, menaia: NO_MENAIA,
Jurisdiction { key: "old", name: "Old Calendar", paschalion: JulP, menologion: JulMen, rule: Orth, tradition: Sl, menaia: NO_MENAIA,
note: "Julian throughout, the reckoning of Moscow, Serbia, Georgia, Jerusalem and the Holy Mountain." },
Jurisdiction { key: "new", name: "New Calendar", paschalion: JulP, menologion: RevJul, rule: Orth, menaia: NO_MENAIA,
Jurisdiction { key: "new", name: "New Calendar", paschalion: JulP, menologion: RevJul, rule: Orth, tradition: Gk, menaia: NO_MENAIA,
note: "Revised Julian fixed feasts with the Julian Paschalion: Constantinople, Greece, Antioch, Romania, Bulgaria, the OCA." },
Jurisdiction { key: "western", name: "Gregorian", paschalion: GregP, menologion: RevJul, rule: Orth, menaia: NO_MENAIA,
Jurisdiction { key: "western", name: "Gregorian", paschalion: GregP, menologion: RevJul, rule: Orth, tradition: Gk, menaia: NO_MENAIA,
note: "Gregorian throughout, Pascha included. Kept by the Finnish Orthodox Church and by most Byzantine Catholics." },
];
pub const JURISDICTIONS: &[Jurisdiction] = &[
// old calendar
Jurisdiction { key: "moscow", name: "Russian Orthodox Church", paschalion: JulP, menologion: JulMen, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "rocor", name: "Russian Orthodox Church Outside Russia", paschalion: JulP, menologion: JulMen, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "serbian", name: "Serbian Orthodox Church", paschalion: JulP, menologion: JulMen, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "georgian", name: "Georgian Orthodox Church", paschalion: JulP, menologion: JulMen, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "jerusalem", name: "Patriarchate of Jerusalem", paschalion: JulP, menologion: JulMen, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "athos", name: "The Holy Mountain", paschalion: JulP, menologion: JulMen, rule: Orth, menaia: NO_MENAIA,
Jurisdiction { key: "moscow", name: "Russian Orthodox Church", paschalion: JulP, menologion: JulMen, rule: Orth, tradition: Sl, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "rocor", name: "Russian Orthodox Church Outside Russia", paschalion: JulP, menologion: JulMen, rule: Orth, tradition: Sl, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "serbian", name: "Serbian Orthodox Church", paschalion: JulP, menologion: JulMen, rule: Orth, tradition: Sl, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "georgian", name: "Georgian Orthodox Church", paschalion: JulP, menologion: JulMen, rule: Orth, tradition: Gk, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "jerusalem", name: "Patriarchate of Jerusalem", paschalion: JulP, menologion: JulMen, rule: Orth, tradition: Gk, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "athos", name: "The Holy Mountain", paschalion: JulP, menologion: JulMen, rule: Orth, tradition: Gk, menaia: NO_MENAIA,
note: "Athonite practice is stricter than the printed Typikon at many points." },
Jurisdiction { key: "polish", name: "Polish Orthodox Church", paschalion: JulP, menologion: JulMen, rule: Orth, menaia: NO_MENAIA,
Jurisdiction { key: "polish", name: "Polish Orthodox Church", paschalion: JulP, menologion: JulMen, rule: Orth, tradition: Sl, menaia: NO_MENAIA,
note: "Returned to the Julian menologion in 2014 after decades on the Revised Julian; some parishes kept the new calendar." },
Jurisdiction { key: "macedonian", name: "Macedonian Orthodox Church", paschalion: JulP, menologion: JulMen, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "macedonian", name: "Macedonian Orthodox Church", paschalion: JulP, menologion: JulMen, rule: Orth, tradition: Sl, menaia: NO_MENAIA, note: "" },
// new calendar
Jurisdiction { key: "constantinople", name: "Ecumenical Patriarchate", paschalion: JulP, menologion: RevJul, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "goarch", name: "Greek Orthodox Archdiocese of America", paschalion: JulP, menologion: RevJul, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "greece", name: "Church of Greece", paschalion: JulP, menologion: RevJul, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "antiochian", name: "Antiochian Orthodox Church", paschalion: JulP, menologion: RevJul, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "oca", name: "Orthodox Church in America", paschalion: JulP, menologion: RevJul, rule: Orth, menaia: NO_MENAIA,
Jurisdiction { key: "constantinople", name: "Ecumenical Patriarchate", paschalion: JulP, menologion: RevJul, rule: Orth, tradition: Gk, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "goarch", name: "Greek Orthodox Archdiocese of America", paschalion: JulP, menologion: RevJul, rule: Orth, tradition: Gk, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "greece", name: "Church of Greece", paschalion: JulP, menologion: RevJul, rule: Orth, tradition: Gk, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "antiochian", name: "Antiochian Orthodox Church", paschalion: JulP, menologion: RevJul, rule: Orth, tradition: Gk, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "oca", name: "Orthodox Church in America", paschalion: JulP, menologion: RevJul, rule: Orth, tradition: Sl, menaia: NO_MENAIA,
note: "Most parishes keep the new calendar; a minority, chiefly of Carpatho-Russian and Alaskan background, keep the old." },
Jurisdiction { key: "romanian", name: "Romanian Orthodox Church", paschalion: JulP, menologion: RevJul, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "bulgarian", name: "Bulgarian Orthodox Church", paschalion: JulP, menologion: RevJul, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "cyprus", name: "Church of Cyprus", paschalion: JulP, menologion: RevJul, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "albanian", name: "Orthodox Church of Albania", paschalion: JulP, menologion: RevJul, rule: Orth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "ukrainian", name: "Orthodox Church of Ukraine", paschalion: JulP, menologion: RevJul, rule: Orth, menaia: NO_MENAIA,
Jurisdiction { key: "romanian", name: "Romanian Orthodox Church", paschalion: JulP, menologion: RevJul, rule: Orth, tradition: Gk, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "bulgarian", name: "Bulgarian Orthodox Church", paschalion: JulP, menologion: RevJul, rule: Orth, tradition: Sl, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "cyprus", name: "Church of Cyprus", paschalion: JulP, menologion: RevJul, rule: Orth, tradition: Gk, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "albanian", name: "Orthodox Church of Albania", paschalion: JulP, menologion: RevJul, rule: Orth, tradition: Gk, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "ukrainian", name: "Orthodox Church of Ukraine", paschalion: JulP, menologion: RevJul, rule: Orth, tradition: Sl, menaia: NO_MENAIA,
note: "Moved the fixed feasts to the Revised Julian calendar on 1 September 2023. The Julian Paschalion is retained." },
// gregorian throughout
Jurisdiction { key: "finnish", name: "Finnish Orthodox Church", paschalion: GregP, menologion: RevJul, rule: Orth, menaia: NO_MENAIA,
Jurisdiction { key: "finnish", name: "Finnish Orthodox Church", paschalion: GregP, menologion: RevJul, rule: Orth, tradition: Gk, menaia: NO_MENAIA,
note: "The only Orthodox Church keeping the Gregorian Paschalion." },
// eastern catholic
Jurisdiction { key: "ruthenian", name: "Byzantine Catholic Metropolia of Pittsburgh", paschalion: GregP, menologion: RevJul, rule: Ruth, menaia: RUTHENIAN_MENAIA,
Jurisdiction { key: "ruthenian", name: "Byzantine Catholic Metropolia of Pittsburgh", paschalion: GregP, menologion: RevJul, rule: Ruth, tradition: Sl, menaia: RUTHENIAN_MENAIA,
note: "Gregorian throughout. Fasting is reported under Ruthenian particular law, which binds far less than the Typikon prescribes." },
Jurisdiction { key: "ugcc", name: "Ukrainian Greek Catholic Church", paschalion: JulP, menologion: RevJul, rule: Ruth, menaia: RUTHENIAN_MENAIA,
Jurisdiction { key: "ugcc", name: "Ukrainian Greek Catholic Church", paschalion: JulP, menologion: RevJul, rule: Ruth, tradition: Sl, menaia: RUTHENIAN_MENAIA,
note: "Moved the fixed feasts to the Revised Julian calendar on 1 September 2023, keeping the Julian Paschalion. Eparchies outside Ukraine vary; several keep the Gregorian Paschalion." },
Jurisdiction { key: "melkite", name: "Melkite Greek Catholic Church", paschalion: GregP, menologion: RevJul, rule: Ruth, menaia: NO_MENAIA,
Jurisdiction { key: "melkite", name: "Melkite Greek Catholic Church", paschalion: GregP, menologion: RevJul, rule: Ruth, tradition: Gk, menaia: NO_MENAIA,
note: "Practice is not uniform: parishes in the Middle East commonly keep the Julian Paschalion for the sake of the local Orthodox." },
Jurisdiction { key: "romanian-catholic", name: "Romanian Greek Catholic Church", paschalion: GregP, menologion: RevJul, rule: Ruth, menaia: NO_MENAIA, note: "" },
Jurisdiction { key: "romanian-catholic", name: "Romanian Greek Catholic Church", paschalion: GregP, menologion: RevJul, rule: Ruth, tradition: Gk, menaia: NO_MENAIA, note: "" },
];
/// A jurisdiction key, a calendar name, or `None` for the default.