genstruct.py

#! /usr/bin/env python

import sys
import json

struct = ['type x ']
out = struct.append

def handle_elem(elem):
    if isinstance(elem, list):
        out('[]')
        handle_seq(elem)
    elif isinstance(elem, dict):
        handle_obj(elem)
    elif elem == 'string':
        out('string\n')
    elif elem == 'number':
        out('int\n')

def handle_seq(seq):
    for elem in seq:
        handle_elem(elem)

def handle_obj(obj):
    out('struct {\n')
    for key in sorted(obj):
        out('%s ' % key)
        value = obj[key]
        handle_elem(obj[key])
    out('}\n')

schema = json.loads(sys.stdin.read().strip())
handle_obj(schema)

print ''.join(struct)