The most powerful schema language of all
Quite easy to specify different schemas
namespace a = "http://relaxng.org/ns/compatibility/annotations/1.0"
plistObject =
array | data | date | dict | real | integer | \string | true | false
plist = element plist { attlist.plist, plistObject }
attlist.plist &= [ a:defaultValue = "1.0" ] attribute version { text }?
# Collections
array = element array { attlist.array, plistObject* }
attlist.array &= empty
dict = element dict { attlist.dict, (key, plistObject)* }
attlist.dict &= empty
key = element key { attlist.key, text }
attlist.key &= empty
# - Primitive types
\string = element string { attlist.string, text }
attlist.string &= empty
data = element data { attlist.data, text }
attlist.data &= empty
# Contents interpreted as Base-64 encoded
date = element date { attlist.date, text }
attlist.date &= empty
# Contents should conform to a subset of ISO 8601
# (in particular, YYYY '-' MM '-' DD 'T' HH ':' MM ':' SS 'Z'.
# Smaller units may be omitted with a loss of precision)
# Numerical primitives
true = element true { attlist.true, empty }
attlist.true &= empty
# Boolean constant true
false = element false { attlist.false, empty }
attlist.false &= empty
# Boolean constant false
real = element real { attlist.real, text }
attlist.real &= empty
# Contents should represent a floating point number
# matching ("+" | "-")? d+ ("."d*)? ("E" ("+" | "-") d+)?
# where d is a digit 0-9.
integer = element integer { attlist.integer, text }
attlist.integer &= empty
start = plist