diff options
Diffstat (limited to 'node_modules/is-my-json-valid/index.js')
| -rw-r--r-- | node_modules/is-my-json-valid/index.js | 569 |
1 files changed, 569 insertions, 0 deletions
diff --git a/node_modules/is-my-json-valid/index.js b/node_modules/is-my-json-valid/index.js new file mode 100644 index 000000000..6fef4ed6f --- /dev/null +++ b/node_modules/is-my-json-valid/index.js @@ -0,0 +1,569 @@ +var genobj = require('generate-object-property') +var genfun = require('generate-function') +var jsonpointer = require('jsonpointer') +var xtend = require('xtend') +var formats = require('./formats') + +var get = function(obj, additionalSchemas, ptr) { + if (/^https?:\/\//.test(ptr)) return null + + var visit = function(sub) { + if (sub && sub.id === ptr) return sub + if (typeof sub !== 'object' || !sub) return null + return Object.keys(sub).reduce(function(res, k) { + return res || visit(sub[k]) + }, null) + } + + var res = visit(obj) + if (res) return res + + ptr = ptr.replace(/^#/, '') + ptr = ptr.replace(/\/$/, '') + + try { + return jsonpointer.get(obj, decodeURI(ptr)) + } catch (err) { + var end = ptr.indexOf('#') + var other + // external reference + if (end !== 0) { + // fragment doesn't exist. + if (end === -1) { + other = additionalSchemas[ptr] + } else { + var ext = ptr.slice(0, end) + other = additionalSchemas[ext] + var fragment = ptr.slice(end).replace(/^#/, '') + try { + return jsonpointer.get(other, fragment) + } catch (err) {} + } + } else { + other = additionalSchemas[ptr] + } + return other || null + } +} + +var formatName = function(field) { + field = JSON.stringify(field) + var pattern = /\[([^\[\]"]+)\]/ + while (pattern.test(field)) field = field.replace(pattern, '."+$1+"') + return field +} + +var types = {} + +types.any = function() { + return 'true' +} + +types.null = function(name) { + return name+' === null' +} + +types.boolean = function(name) { + return 'typeof '+name+' === "boolean"' +} + +types.array = function(name) { + return 'Array.isArray('+name+')' +} + +types.object = function(name) { + return 'typeof '+name+' === "object" && '+name+' && !Array.isArray('+name+')' +} + +types.number = function(name) { + return 'typeof '+name+' === "number"' +} + +types.integer = function(name) { + return 'typeof '+name+' === "number" && (Math.floor('+name+') === '+name+' || '+name+' > 9007199254740992 || '+name+' < -9007199254740992)' +} + +types.string = function(name) { + return 'typeof '+name+' === "string"' +} + +var unique = function(array) { + var list = [] + for (var i = 0; i < array.length; i++) { + list.push(typeof array[i] === 'object' ? JSON.stringify(array[i]) : array[i]) + } + for (var i = 1; i < list.length; i++) { + if (list.indexOf(list[i]) !== i) return false + } + return true +} + +var toType = function(node) { + return node.type +} + +var compile = function(schema, cache, root, reporter, opts) { + var fmts = opts ? xtend(formats, opts.formats) : formats + var scope = {unique:unique, formats:fmts} + var verbose = opts ? !!opts.verbose : false; + var greedy = opts && opts.greedy !== undefined ? + opts.greedy : false; + + var syms = {} + var gensym = function(name) { + return name+(syms[name] = (syms[name] || 0)+1) + } + + var reversePatterns = {} + var patterns = function(p) { + if (reversePatterns[p]) return reversePatterns[p] + var n = gensym('pattern') + scope[n] = new RegExp(p) + reversePatterns[p] = n + return n + } + + var vars = ['i','j','k','l','m','n','o','p','q','r','s','t','u','v','x','y','z'] + var genloop = function() { + var v = vars.shift() + vars.push(v+v[0]) + return v + } + + var visit = function(name, node, reporter, filter) { + var properties = node.properties + var type = node.type + var tuple = false + + if (Array.isArray(node.items)) { // tuple type + properties = {} + node.items.forEach(function(item, i) { + properties[i] = item + }) + type = 'array' + tuple = true + } + + var indent = 0 + var error = function(msg, prop, value) { + validate('errors++') + if (reporter === true) { + validate('if (validate.errors === null) validate.errors = []') + if (verbose) { + validate('validate.errors.push({field:%s,message:%s,value:%s})', formatName(prop || name), JSON.stringify(msg), value || name) + } else { + validate('validate.errors.push({field:%s,message:%s})', formatName(prop || name), JSON.stringify(msg)) + } + } + } + + if (node.required === true) { + indent++ + validate('if (%s === undefined) {', name) + error('is required') + validate('} else {') + } else { + indent++ + validate('if (%s !== undefined) {', name) + } + + var valid = [].concat(type) + .map(function(t) { + return types[t || 'any'](name) + }) + .join(' || ') || 'true' + + if (valid !== 'true') { + indent++ + validate('if (!(%s)) {', valid) + error('is the wrong type') + validate('} else {') + } + + if (tuple) { + if (node.additionalItems === false) { + validate('if (%s.length > %d) {', name, node.items.length) + error('has additional items') + validate('}') + } else if (node.additionalItems) { + var i = genloop() + validate('for (var %s = %d; %s < %s.length; %s++) {', i, node.items.length, i, name, i) + visit(name+'['+i+']', node.additionalItems, reporter, filter) + validate('}') + } + } + + if (node.format && fmts[node.format]) { + if (type !== 'string' && formats[node.format]) validate('if (%s) {', types.string(name)) + var n = gensym('format') + scope[n] = fmts[node.format] + + if (typeof scope[n] === 'function') validate('if (!%s(%s)) {', n, name) + else validate('if (!%s.test(%s)) {', n, name) + error('must be '+node.format+' format') + validate('}') + if (type !== 'string' && formats[node.format]) validate('}') + } + + if (Array.isArray(node.required)) { + var isUndefined = function(req) { + return genobj(name, req) + ' === undefined' + } + + var checkRequired = function (req) { + var prop = genobj(name, req); + validate('if (%s === undefined) {', prop) + error('is required', prop) + validate('missing++') + validate('}') + } + validate('if ((%s)) {', type !== 'object' ? types.object(name) : 'true') + validate('var missing = 0') + node.required.map(checkRequired) + validate('}'); + if (!greedy) { + validate('if (missing === 0) {') + indent++ + } + } + + if (node.uniqueItems) { + if (type !== 'array') validate('if (%s) {', types.array(name)) + validate('if (!(unique(%s))) {', name) + error('must be unique') + validate('}') + if (type !== 'array') validate('}') + } + + if (node.enum) { + var complex = node.enum.some(function(e) { + return typeof e === 'object' + }) + + var compare = complex ? + function(e) { + return 'JSON.stringify('+name+')'+' !== JSON.stringify('+JSON.stringify(e)+')' + } : + function(e) { + return name+' !== '+JSON.stringify(e) + } + + validate('if (%s) {', node.enum.map(compare).join(' && ') || 'false') + error('must be an enum value') + validate('}') + } + + if (node.dependencies) { + if (type !== 'object') validate('if (%s) {', types.object(name)) + + Object.keys(node.dependencies).forEach(function(key) { + var deps = node.dependencies[key] + if (typeof deps === 'string') deps = [deps] + + var exists = function(k) { + return genobj(name, k) + ' !== undefined' + } + + if (Array.isArray(deps)) { + validate('if (%s !== undefined && !(%s)) {', genobj(name, key), deps.map(exists).join(' && ') || 'true') + error('dependencies not set') + validate('}') + } + if (typeof deps === 'object') { + validate('if (%s !== undefined) {', genobj(name, key)) + visit(name, deps, reporter, filter) + validate('}') + } + }) + + if (type !== 'object') validate('}') + } + + if (node.additionalProperties || node.additionalProperties === false) { + if (type !== 'object') validate('if (%s) {', types.object(name)) + + var i = genloop() + var keys = gensym('keys') + + var toCompare = function(p) { + return keys+'['+i+'] !== '+JSON.stringify(p) + } + + var toTest = function(p) { + return '!'+patterns(p)+'.test('+keys+'['+i+'])' + } + + var additionalProp = Object.keys(properties || {}).map(toCompare) + .concat(Object.keys(node.patternProperties || {}).map(toTest)) + .join(' && ') || 'true' + + validate('var %s = Object.keys(%s)', keys, name) + ('for (var %s = 0; %s < %s.length; %s++) {', i, i, keys, i) + ('if (%s) {', additionalProp) + + if (node.additionalProperties === false) { + if (filter) validate('delete %s', name+'['+keys+'['+i+']]') + error('has additional properties', null, JSON.stringify(name+'.') + ' + ' + keys + '['+i+']') + } else { + visit(name+'['+keys+'['+i+']]', node.additionalProperties, reporter, filter) + } + + validate + ('}') + ('}') + + if (type !== 'object') validate('}') + } + + if (node.$ref) { + var sub = get(root, opts && opts.schemas || {}, node.$ref) + if (sub) { + var fn = cache[node.$ref] + if (!fn) { + cache[node.$ref] = function proxy(data) { + return fn(data) + } + fn = compile(sub, cache, root, false, opts) + } + var n = gensym('ref') + scope[n] = fn + validate('if (!(%s(%s))) {', n, name) + error('referenced schema does not match') + validate('}') + } + } + + if (node.not) { + var prev = gensym('prev') + validate('var %s = errors', prev) + visit(name, node.not, false, filter) + validate('if (%s === errors) {', prev) + error('negative schema matches') + validate('} else {') + ('errors = %s', prev) + ('}') + } + + if (node.items && !tuple) { + if (type !== 'array') validate('if (%s) {', types.array(name)) + + var i = genloop() + validate('for (var %s = 0; %s < %s.length; %s++) {', i, i, name, i) + visit(name+'['+i+']', node.items, reporter, filter) + validate('}') + + if (type !== 'array') validate('}') + } + + if (node.patternProperties) { + if (type !== 'object') validate('if (%s) {', types.object(name)) + var keys = gensym('keys') + var i = genloop() + validate + ('var %s = Object.keys(%s)', keys, name) + ('for (var %s = 0; %s < %s.length; %s++) {', i, i, keys, i) + + Object.keys(node.patternProperties).forEach(function(key) { + var p = patterns(key) + validate('if (%s.test(%s)) {', p, keys+'['+i+']') + visit(name+'['+keys+'['+i+']]', node.patternProperties[key], reporter, filter) + validate('}') + }) + + validate('}') + if (type !== 'object') validate('}') + } + + if (node.pattern) { + var p = patterns(node.pattern) + if (type !== 'string') validate('if (%s) {', types.string(name)) + validate('if (!(%s.test(%s))) {', p, name) + error('pattern mismatch') + validate('}') + if (type !== 'string') validate('}') + } + + if (node.allOf) { + node.allOf.forEach(function(sch) { + visit(name, sch, reporter, filter) + }) + } + + if (node.anyOf && node.anyOf.length) { + var prev = gensym('prev') + + node.anyOf.forEach(function(sch, i) { + if (i === 0) { + validate('var %s = errors', prev) + } else { + validate('if (errors !== %s) {', prev) + ('errors = %s', prev) + } + visit(name, sch, false, false) + }) + node.anyOf.forEach(function(sch, i) { + if (i) validate('}') + }) + validate('if (%s !== errors) {', prev) + error('no schemas match') + validate('}') + } + + if (node.oneOf && node.oneOf.length) { + var prev = gensym('prev') + var passes = gensym('passes') + + validate + ('var %s = errors', prev) + ('var %s = 0', passes) + + node.oneOf.forEach(function(sch, i) { + visit(name, sch, false, false) + validate('if (%s === errors) {', prev) + ('%s++', passes) + ('} else {') + ('errors = %s', prev) + ('}') + }) + + validate('if (%s !== 1) {', passes) + error('no (or more than one) schemas match') + validate('}') + } + + if (node.multipleOf !== undefined) { + if (type !== 'number' && type !== 'integer') validate('if (%s) {', types.number(name)) + + var factor = ((node.multipleOf | 0) !== node.multipleOf) ? Math.pow(10, node.multipleOf.toString().split('.').pop().length) : 1 + if (factor > 1) validate('if ((%d*%s) % %d) {', factor, name, factor*node.multipleOf) + else validate('if (%s % %d) {', name, node.multipleOf) + + error('has a remainder') + validate('}') + + if (type !== 'number' && type !== 'integer') validate('}') + } + + if (node.maxProperties !== undefined) { + if (type !== 'object') validate('if (%s) {', types.object(name)) + + validate('if (Object.keys(%s).length > %d) {', name, node.maxProperties) + error('has more properties than allowed') + validate('}') + + if (type !== 'object') validate('}') + } + + if (node.minProperties !== undefined) { + if (type !== 'object') validate('if (%s) {', types.object(name)) + + validate('if (Object.keys(%s).length < %d) {', name, node.minProperties) + error('has less properties than allowed') + validate('}') + + if (type !== 'object') validate('}') + } + + if (node.maxItems !== undefined) { + if (type !== 'array') validate('if (%s) {', types.array(name)) + + validate('if (%s.length > %d) {', name, node.maxItems) + error('has more items than allowed') + validate('}') + + if (type !== 'array') validate('}') + } + + if (node.minItems !== undefined) { + if (type !== 'array') validate('if (%s) {', types.array(name)) + + validate('if (%s.length < %d) {', name, node.minItems) + error('has less items than allowed') + validate('}') + + if (type !== 'array') validate('}') + } + + if (node.maxLength !== undefined) { + if (type !== 'string') validate('if (%s) {', types.string(name)) + + validate('if (%s.length > %d) {', name, node.maxLength) + error('has longer length than allowed') + validate('}') + + if (type !== 'string') validate('}') + } + + if (node.minLength !== undefined) { + if (type !== 'string') validate('if (%s) {', types.string(name)) + + validate('if (%s.length < %d) {', name, node.minLength) + error('has less length than allowed') + validate('}') + + if (type !== 'string') validate('}') + } + + if (node.minimum !== undefined) { + validate('if (%s %s %d) {', name, node.exclusiveMinimum ? '<=' : '<', node.minimum) + error('is less than minimum') + validate('}') + } + + if (node.maximum !== undefined) { + validate('if (%s %s %d) {', name, node.exclusiveMaximum ? '>=' : '>', node.maximum) + error('is more than maximum') + validate('}') + } + + if (properties) { + Object.keys(properties).forEach(function(p) { + visit(genobj(name, p), properties[p], reporter, filter) + }) + } + + while (indent--) validate('}') + } + + var validate = genfun + ('function validate(data) {') + ('validate.errors = null') + ('var errors = 0') + + visit('data', schema, reporter, opts && opts.filter) + + validate + ('return errors === 0') + ('}') + + validate = validate.toFunction(scope) + validate.errors = null + + validate.__defineGetter__('error', function() { + if (!validate.errors) return '' + return validate.errors + .map(function(err) { + return err.field+' '+err.message + }) + .join('\n') + }) + + validate.toJSON = function() { + return schema + } + + return validate +} + +module.exports = function(schema, opts) { + if (typeof schema === 'string') schema = JSON.parse(schema) + return compile(schema, {}, schema, true, opts) +} + +module.exports.filter = function(schema, opts) { + var validate = module.exports(schema, xtend(opts, {filter: true})) + return function(sch) { + validate(sch) + return sch + } +} |