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|
(define json->s7
(let ()
(define (strlet . args) ; inlet with keys as strings
(apply inlet (do ((p args (cddr p))
(fields ()))
((null? p)
(reverse! fields))
(set! fields (cons (cadr p)
(cons (symbol (car p))
fields))))))
(let ((jlet (curlet)))
(lambda (str)
(do ((p (open-output-string))
(len (length str))
(i 0 (+ i 1)))
((= i len)
(let ((result (eval-string (get-output-string p) jlet))) ; jlet so that strlet is defined
(close-output-port p)
result))
(case (str i)
((#\{) ; {...} -> (inlet ...) via strlet above
(display "(strlet " p))
((#\[) ; [...] -> (vector ...)
(display "(vector " p))
((#\} #\])
(write-char #\) p))
((#\: #\,)
(write-char #\space p))
((#\")
(let ((qpos (char-position #\" str (+ i 1))))
(if (not qpos)
(format *stderr* "no close quote: ~S ~S~%" (substring str 0 i) (substring str i)))
(if (char=? (str (- qpos 1)) #\\) ; stopgap...
(set! qpos (char-position #\" str (+ qpos 1))))
(display (substring str i (+ qpos 1)) p)
(set! i qpos)))
((#\t) ; true -> #t
(if (and (< i (- len 3))
(string=? (substring str i (+ i 4)) "true"))
(begin
(display "#t" p)
(set! i (+ i 3)))
(format *stderr* "bad entry: ~S~%" (substring str i))))
((#\n) ; null -> ()
(if (and (< i (- len 3))
(string=? (substring str i (+ i 4)) "null"))
(begin
(display "()" p)
(set! i (+ i 3)))
(format *stderr* "bad entry: ~S~%" (substring str i))))
((#\f) ; false -> #f
(if (and (< i (- len 4))
(string=? (substring str i (+ i 5)) "false"))
(begin
(display "#f" p)
(set! i (+ i 4)))
(format *stderr* "bad entry: ~S~%" (substring str i))))
(else
(write-char (str i) p))))))))
;;; TODO: in the strings we need to support the 4-digit stuff (\\uxxxx I think)
;;; (json->s7 "{\"test\" : \"a\\u1234b\"}") -> (inlet 'test "a\x1234;b")
(define* (s7->json obj (port (current-output-port)))
(case (type-of obj)
((integer? float?)
(display obj port))
((string?)
(write obj port))
((vector? float-vector? int-vector? byte-vector?)
(let ((len (length obj)))
(if (zero? len)
(display "[]" port)
(begin
(write-char #\[ port)
(do ((i 0 (+ i 1)))
((= i (- len 1))
(s7->json (obj i) port)
(write-char #\] port))
(s7->json (obj i) port)
(display ", " port))))))
((let?)
(let ((len (length obj)))
(if (zero? len)
(display "{}" port)
(let ((slot-ctr 1))
(write-char #\{ port)
(for-each (lambda (slot)
(write (symbol->string (car slot)) port)
(display " : " port)
(s7->json (cdr slot) port)
(if (< slot-ctr len)
(display ", " port)
(write-char #\} port))
(set! slot-ctr (+ slot-ctr 1)))
(reverse obj))))))
(else
(format *stderr* "bad entry: ~S~%" obj))))
#|
;;; -------------------------------- tests --------------------------------
(display (with-output-to-string (lambda () (s7->json (vector 1 2))))) (newline) ; "[1, 2]"
(display (with-output-to-string (lambda () (s7->json (vector "asdf" #i(1 2)))))) (newline) ; "[\"asdf\", [1, 2]]"
(display (with-output-to-string (lambda () (s7->json (inlet 'a 2))))) (newline) ; "{\"a\" : 2}
(display
(with-output-to-string
(lambda ()
(s7->json (json->s7 "{\"title\": \"Person\", \"type\": \"object\"}")))))
(newline)
(write (json->s7 "{\"test\":\"a\\\\b\"}")) (newline) ; (inlet 'test "a\\b") = (#\a #\\ #\b)
(write (json->s7 "{\"test\" : \"a\tb\"}")) (newline) ; (string->list ((inlet 'test "a\x09b") 'test)) = (#\a #\tab #\b)
(write (json->s7 "{\"test\":\"a\fb\"}")) (newline) ; (inlet 'test "a\x0cb")
(write (json->s7 "{\"test\":\"a\rb\"}")) (newline) ; (inlet 'test "a\x0db")
(write (json->s7 "{\"test\":\"a\bb\"}")) (newline) ; (inlet 'test "a\x08b")
(write (json->s7 "{\"test\":\"a\/b\"}")) (newline) ; (inlet 'test "a/b")
(write (json->s7 "[123 321]")) (newline)
(write (json->s7 "{\"asdf\" : 123}")) (newline)
(write (json->s7 "{\"asdf\":123}")) (newline)
(write (json->s7 "[1 {\"asdf\" : \"fsda\"} 2]")) (newline)
(write (json->s7 "[1.2 [3 [\"asdf\"]]]")) (newline)
(write (json->s7 "[{} [] \"\"]")) (newline)
;; some examples from json-schema.org and another site -- sitepoint?
(write (json->s7 "{
\"title\": \"Person\",
\"type\": \"object\",
\"properties\": {
\"firstName\": {
\"type\": \"string\"
},
\"lastName\": {
\"type\": \"string\"
},
\"age\": {
\"description\": \"Age in years\",
\"type\": \"integer\",
\"minimum\": 0
}
},
\"required\": [\"firstName\", \"lastName\"]
}"))
(newline)
(write (json->s7 "{ \"id\": \"http://json-schema.org/geo\", \"$schema\": \"http://json-schema.org/draft-06/schema#\", \"description\": \"A geographical coordinate\", \"type\": \"object\", \"properties\": { \"latitude\": { \"type\": \"number\" }, \"longitude\": { \"type\": \"number\" } } }")) (newline)
(write (json->s7 "{ \"$schema\": \"http://json-schema.org/draft-06/schema#\", \"description\": \"A representation of a person, company, organization, or place\", \"type\": \"object\", \"required\": [\"familyName\", \"givenName\"], \"properties\": { \"fn\": { \"description\": \"Formatted Name\", \"type\": \"string\" }, \"familyName\": { \"type\": \"string\" }, \"givenName\": { \"type\": \"string\" }, \"additionalName\": { \"type\": \"array\", \"items\": { \"type\": \"string\" } }, \"honorificPrefix\": { \"type\": \"array\", \"items\": { \"type\": \"string\" } }, \"honorificSuffix\": { \"type\": \"array\", \"items\": { \"type\": \"string\" } }, \"nickname\": { \"type\": \"string\" }, \"url\": { \"type\": \"string\", \"format\": \"uri\" }, \"email\": { \"type\": \"object\", \"properties\": { \"type\": { \"type\": \"string\" }, \"value\": { \"type\": \"string\", \"format\": \"email\" } } }, \"tel\": { \"type\": \"object\", \"properties\": { \"type\": { \"type\": \"string\" }, \"value\": { \"type\": \"string\", \"format\": \"phone\" } } }, \"adr\": { \"$ref\": \"http://json-schema.org/address\" }, \"geo\": { \"$ref\": \"http://json-schema.org/geo\" }, \"tz\": { \"type\": \"string\" }, \"photo\": { \"type\": \"string\" }, \"logo\": { \"type\": \"string\" }, \"sound\": { \"type\": \"string\" }, \"bday\": { \"type\": \"string\", \"format\": \"date\" }, \"title\": { \"type\": \"string\" }, \"role\": { \"type\": \"string\" }, \"org\": { \"type\": \"object\", \"properties\": { \"organizationName\": { \"type\": \"string\" }, \"organizationUnit\": { \"type\": \"string\" } } } } } ")) (newline)
(write (json->s7 "{ \"$schema\": \"http://json-schema.org/draft-06/schema#\", \"description\": \"A representation of an event\", \"type\": \"object\", \"required\": [ \"dtstart\", \"summary\" ], \"properties\": { \"dtstart\": { \"format\": \"date-time\", \"type\": \"string\", \"description\": \"Event starting time\" }, \"dtend\": { \"format\": \"date-time\", \"type\": \"string\", \"description\": \"Event ending time\" }, \"summary\": { \"type\": \"string\" }, \"location\": { \"type\": \"string\" }, \"url\": { \"type\": \"string\", \"format\": \"uri\" }, \"duration\": { \"format\": \"time\", \"type\": \"string\", \"description\": \"Event duration\" }, \"rdate\": { \"format\": \"date-time\", \"type\": \"string\", \"description\": \"Recurrence date\" }, \"rrule\": { \"type\": \"string\", \"description\": \"Recurrence rule\" }, \"category\": { \"type\": \"string\" }, \"description\": { \"type\": \"string\" }, \"geo\": { \"$ref\": \"http://json-schema.org/geo\" } } } ")) (newline)
(write (json->s7 "{ \"$schema\": \"http://json-schema.org/draft-06/schema#\", \"description\": \"An Address following the convention of http://microformats.org/wiki/hcard\", \"type\": \"object\", \"properties\": { \"post-office-box\": { \"type\": \"string\" }, \"extended-address\": { \"type\": \"string\" }, \"street-address\": { \"type\": \"string\" }, \"locality\":{ \"type\": \"string\" }, \"region\": { \"type\": \"string\" }, \"postal-code\": { \"type\": \"string\" }, \"country-name\": { \"type\": \"string\"} }, \"required\": [\"locality\", \"region\", \"country-name\"], \"dependencies\": { \"post-office-box\": [\"street-address\"], \"extended-address\": [\"street-address\"] } } ")) (newline)
(write (json->s7 "{
\"id\": 1,
\"name\": \"A green door\",
\"price\": 12.50,
\"tags\": [\"home\", \"green\"]
}")) (newline)
(write (json->s7 "[
{
\"id\": 2,
\"name\": \"An ice sculpture\",
\"price\": 12.50,
\"tags\": [\"cold\", \"ice\"],
\"dimensions\": {
\"length\": 7.0,
\"width\": 12.0,
\"height\": 9.5
},
\"warehouseLocation\": {
\"latitude\": -78.75,
\"longitude\": 20.4
}
},
{
\"id\": 3,
\"name\": \"A blue mouse\",
\"price\": 25.50,
\"dimensions\": {
\"length\": 3.1,
\"width\": 1.0,
\"height\": 1.0
},
\"warehouseLocation\": {
\"latitude\": 54.4,
\"longitude\": -32.7
}
}
]"))
(newline)
(write (json->s7 "{
\"id\": \"http://some.site.somewhere/entry-schema#\",
\"$schema\": \"http://json-schema.org/draft-06/schema#\",
\"description\": \"schema for an fstab entry\",
\"type\": \"object\",
\"required\": [ \"storage\" ],
\"properties\": {
\"storage\": {
\"type\": \"object\",
\"oneOf\": [
{ \"$ref\": \"#/definitions/diskDevice\" },
{ \"$ref\": \"#/definitions/diskUUID\" },
{ \"$ref\": \"#/definitions/nfs\" },
{ \"$ref\": \"#/definitions/tmpfs\" }
]
},
\"fstype\": {
\"enum\": [ \"ext3\", \"ext4\", \"btrfs\" ]
},
\"options\": {
\"type\": \"array\",
\"minItems\": 1,
\"items\": { \"type\": \"string\" },
\"uniqueItems\": true
},
\"readonly\": { \"type\": \"boolean\" }
},
\"definitions\": {
\"diskDevice\": {
\"properties\": {
\"type\": { \"enum\": [ \"disk\" ] },
\"device\": {
\"type\": \"string\",
\"pattern\": \"^/dev/[^/]+(/[^/]+)*$\"
}
},
\"required\": [ \"type\", \"device\" ],
\"additionalProperties\": false
},
\"diskUUID\": {
\"properties\": {
\"type\": { \"enum\": [ \"disk\" ] },
\"label\": {
\"type\": \"string\",
\"pattern\": \"^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}$\"
}
},
\"required\": [ \"type\", \"label\" ],
\"additionalProperties\": false
},
\"nfs\": {
\"properties\": {
\"type\": { \"enum\": [ \"nfs\" ] },
\"remotePath\": {
\"type\": \"string\",
\"pattern\": \"^(/[^/]+)+$\"
},
\"server\": {
\"type\": \"string\",
\"oneOf\": [
{ \"format\": \"hostname\" },
{ \"format\": \"ipv4\" },
{ \"format\": \"ipv6\" }
]
}
},
\"required\": [ \"type\", \"server\", \"remotePath\" ],
\"additionalProperties\": false
},
\"tmpfs\": {
\"properties\": {
\"type\": { \"enum\": [ \"tmpfs\" ] },
\"sizeInMB\": {
\"type\": \"integer\",
\"minimum\": 16,
\"maximum\": 512
}
},
\"required\": [ \"type\", \"sizeInMB\" ],
\"additionalProperties\": false
}
}
}
")) (newline)
(write (json->s7 "{
\"aliceblue\": [240, 248, 255, 1],
\"antiquewhite\": [250, 235, 215, 1],
\"aqua\": [0, 255, 255, 1],
\"aquamarine\": [127, 255, 212, 1],
\"azure\": [240, 255, 255, 1],
\"beige\": [245, 245, 220, 1],
\"bisque\": [255, 228, 196, 1],
\"black\": [0, 0, 0, 1],
\"blanchedalmond\": [255, 235, 205, 1],
\"blue\": [0, 0, 255, 1],
\"blueviolet\": [138, 43, 226, 1],
\"brown\": [165, 42, 42, 1],
\"burlywood\": [222, 184, 135, 1],
\"cadetblue\": [95, 158, 160, 1],
\"chartreuse\": [127, 255, 0, 1],
\"chocolate\": [210, 105, 30, 1],
\"coral\": [255, 127, 80, 1],
}"))
(newline)
|#
|
