43 lines
1.8 KiB
Text
43 lines
1.8 KiB
Text
# plural.ludic - msgid_plural / msgstr[k], chosen by the file's Plural-Forms. The rules a game meets
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# are named rather than evaluated: one form, n != 1, n > 1 and the three East Slavic forms
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export const PL_NOT_ONE: int = 0 # English, German, Turkish as most files write it
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export const PL_ABOVE_ONE: int = 1 # French, Portuguese (0 and 1 are singular)
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export const PL_ONE_FORM: int = 2 # Japanese, Chinese
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export const PL_SLAVIC: int = 3 # Russian, Ukrainian: one, few, many
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@alloc_ok("on a language change: its plural rule read from the header")
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function plural_rule_of(h: string) -> int {
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let k = i18n_find(h, len(h), 0, "plural=", 7)
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if k < 0 { return PL_NOT_ONE }
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let e: string = h[k + 7..len(h)]
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if i18n_find(e, len(e), 0, "n%10", 4) >= 0 or i18n_find(e, len(e), 0, "n % 10", 6) >= 0 { return PL_SLAVIC }
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if i18n_find(e, len(e), 0, ">", 1) >= 0 { return PL_ABOVE_ONE }
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if i18n_find(e, len(e), 0, "n", 1) < 0 { return PL_ONE_FORM }
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return PL_NOT_ONE
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}
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export function i18n_plural_rule(i18n_st: I18nState) -> int { return i18n_st.plural_rule }
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# which msgstr[k] a count takes under a rule
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export function i18n_plural_form(rule: int, n: int) -> int {
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if rule == PL_ONE_FORM { return 0 }
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if rule == PL_ABOVE_ONE {
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if n > 1 { return 1 }
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return 0
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}
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if rule == PL_SLAVIC {
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if n % 10 == 1 and n % 100 != 11 { return 0 }
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if n % 10 >= 2 and n % 10 <= 4 and (n % 100 < 10 or n % 100 >= 20) { return 1 }
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return 2
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}
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if n != 1 { return 1 }
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return 0
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}
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function plural_add(i18n_st: mut I18nState, e: PoEntry) -> void {
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if len(e.forms) == 0 or blank(e.forms[0]) { return }
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Dict.set(i18n_st.plural, e.id, len(i18n_st.forms) / 3)
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for k in 0 .. 3 {
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if k < len(e.forms) { push(i18n_st.forms, e.forms[k]) } else { push(i18n_st.forms, e.forms[len(e.forms) - 1]) }
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}
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}
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