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class Date
def self.valid_ordinal? (y, d, sg=ITALY)
if d < 0
ny, = clfloor(y + 1, 1)
jd = ordinal_to_jd(ny, d + 1, sg)
ns = ns?(jd, sg)
return unless [y] == jd_to_ordinal(jd, sg)[0..0]
return unless [ny, 1] == jd_to_ordinal(jd - d, ns)
else
jd = ordinal_to_jd(y, d, sg)
return unless [y, d] == jd_to_ordinal(jd, sg)
end
jd
end
private
def split_name name
raise TooLongFileName if name.size > 256
if name.size <= 100
prefix = ""
else
parts = name.split(/\//)
newname = parts.pop
nxt = ""
loop do
nxt = parts.pop
break if newname.size + 1 + nxt.size > 100
newname = nxt + "/" + newname
end
prefix = (parts + [nxt]).join "/"
name = newname
raise TooLongFileName if name.size > 100 || prefix.size > 155
end
return name, prefix
end
end
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