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qwen/nodejs/node_modules/joi/lib/manifest.js

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+'use strict';
+
+const Assert = require('@hapi/hoek/lib/assert');
+const Clone = require('@hapi/hoek/lib/clone');
+
+const Common = require('./common');
+const Messages = require('./messages');
+const Ref = require('./ref');
+const Template = require('./template');
+
+let Schemas;
+
+
+const internals = {};
+
+
+exports.describe = function (schema) {
+
+    const def = schema._definition;
+
+    // Type
+
+    const desc = {
+        type: schema.type,
+        flags: {},
+        rules: []
+    };
+
+    // Flags
+
+    for (const flag in schema._flags) {
+        if (flag[0] !== '_') {
+            desc.flags[flag] = internals.describe(schema._flags[flag]);
+        }
+    }
+
+    if (!Object.keys(desc.flags).length) {
+        delete desc.flags;
+    }
+
+    // Preferences
+
+    if (schema._preferences) {
+        desc.preferences = Clone(schema._preferences, { shallow: ['messages'] });
+        delete desc.preferences[Common.symbols.prefs];
+        if (desc.preferences.messages) {
+            desc.preferences.messages = Messages.decompile(desc.preferences.messages);
+        }
+    }
+
+    // Allow / Invalid
+
+    if (schema._valids) {
+        desc.allow = schema._valids.describe();
+    }
+
+    if (schema._invalids) {
+        desc.invalid = schema._invalids.describe();
+    }
+
+    // Rules
+
+    for (const rule of schema._rules) {
+        const ruleDef = def.rules[rule.name];
+        if (ruleDef.manifest === false) {                           // Defaults to true
+            continue;
+        }
+
+        const item = { name: rule.name };
+
+        for (const custom in def.modifiers) {
+            if (rule[custom] !== undefined) {
+                item[custom] = internals.describe(rule[custom]);
+            }
+        }
+
+        if (rule.args) {
+            item.args = {};
+            for (const key in rule.args) {
+                const arg = rule.args[key];
+                if (key === 'options' &&
+                    !Object.keys(arg).length) {
+
+                    continue;
+                }
+
+                item.args[key] = internals.describe(arg, { assign: key });
+            }
+
+            if (!Object.keys(item.args).length) {
+                delete item.args;
+            }
+        }
+
+        desc.rules.push(item);
+    }
+
+    if (!desc.rules.length) {
+        delete desc.rules;
+    }
+
+    // Terms (must be last to verify no name conflicts)
+
+    for (const term in schema.$_terms) {
+        if (term[0] === '_') {
+            continue;
+        }
+
+        Assert(!desc[term], 'Cannot describe schema due to internal name conflict with', term);
+
+        const items = schema.$_terms[term];
+        if (!items) {
+            continue;
+        }
+
+        if (items instanceof Map) {
+            if (items.size) {
+                desc[term] = [...items.entries()];
+            }
+
+            continue;
+        }
+
+        if (Common.isValues(items)) {
+            desc[term] = items.describe();
+            continue;
+        }
+
+        Assert(def.terms[term], 'Term', term, 'missing configuration');
+        const manifest = def.terms[term].manifest;
+        const mapped = typeof manifest === 'object';
+        if (!items.length &&
+            !mapped) {
+
+            continue;
+        }
+
+        const normalized = [];
+        for (const item of items) {
+            normalized.push(internals.describe(item));
+        }
+
+        // Mapped
+
+        if (mapped) {
+            const { from, to } = manifest.mapped;
+            desc[term] = {};
+            for (const item of normalized) {
+                desc[term][item[to]] = item[from];
+            }
+
+            continue;
+        }
+
+        // Single
+
+        if (manifest === 'single') {
+            Assert(normalized.length === 1, 'Term', term, 'contains more than one item');
+            desc[term] = normalized[0];
+            continue;
+        }
+
+        // Array
+
+        desc[term] = normalized;
+    }
+
+    internals.validate(schema.$_root, desc);
+    return desc;
+};
+
+
+internals.describe = function (item, options = {}) {
+
+    if (Array.isArray(item)) {
+        return item.map(internals.describe);
+    }
+
+    if (item === Common.symbols.deepDefault) {
+        return { special: 'deep' };
+    }
+
+    if (typeof item !== 'object' ||
+        item === null) {
+
+        return item;
+    }
+
+    if (options.assign === 'options') {
+        return Clone(item);
+    }
+
+    if (Buffer && Buffer.isBuffer(item)) {                          // $lab:coverage:ignore$
+        return { buffer: item.toString('binary') };
+    }
+
+    if (item instanceof Date) {
+        return item.toISOString();
+    }
+
+    if (item instanceof Error) {
+        return item;
+    }
+
+    if (item instanceof RegExp) {
+        if (options.assign === 'regex') {
+            return item.toString();
+        }
+
+        return { regex: item.toString() };
+    }
+
+    if (item[Common.symbols.literal]) {
+        return { function: item.literal };
+    }
+
+    if (typeof item.describe === 'function') {
+        if (options.assign === 'ref') {
+            return item.describe().ref;
+        }
+
+        return item.describe();
+    }
+
+    const normalized = {};
+    for (const key in item) {
+        const value = item[key];
+        if (value === undefined) {
+            continue;
+        }
+
+        normalized[key] = internals.describe(value, { assign: key });
+    }
+
+    return normalized;
+};
+
+
+exports.build = function (joi, desc) {
+
+    const builder = new internals.Builder(joi);
+    return builder.parse(desc);
+};
+
+
+internals.Builder = class {
+
+    constructor(joi) {
+
+        this.joi = joi;
+    }
+
+    parse(desc) {
+
+        internals.validate(this.joi, desc);
+
+        // Type
+
+        let schema = this.joi[desc.type]()._bare();
+        const def = schema._definition;
+
+        // Flags
+
+        if (desc.flags) {
+            for (const flag in desc.flags) {
+                const setter = def.flags[flag] && def.flags[flag].setter || flag;
+                Assert(typeof schema[setter] === 'function', 'Invalid flag', flag, 'for type', desc.type);
+                schema = schema[setter](this.build(desc.flags[flag]));
+            }
+        }
+
+        // Preferences
+
+        if (desc.preferences) {
+            schema = schema.preferences(this.build(desc.preferences));
+        }
+
+        // Allow / Invalid
+
+        if (desc.allow) {
+            schema = schema.allow(...this.build(desc.allow));
+        }
+
+        if (desc.invalid) {
+            schema = schema.invalid(...this.build(desc.invalid));
+        }
+
+        // Rules
+
+        if (desc.rules) {
+            for (const rule of desc.rules) {
+                Assert(typeof schema[rule.name] === 'function', 'Invalid rule', rule.name, 'for type', desc.type);
+
+                const args = [];
+                if (rule.args) {
+                    const built = {};
+                    for (const key in rule.args) {
+                        built[key] = this.build(rule.args[key], { assign: key });
+                    }
+
+                    const keys = Object.keys(built);
+                    const definition = def.rules[rule.name].args;
+                    if (definition) {
+                        Assert(keys.length <= definition.length, 'Invalid number of arguments for', desc.type, rule.name, '(expected up to', definition.length, ', found', keys.length, ')');
+                        for (const { name } of definition) {
+                            args.push(built[name]);
+                        }
+                    }
+                    else {
+                        Assert(keys.length === 1, 'Invalid number of arguments for', desc.type, rule.name, '(expected up to 1, found', keys.length, ')');
+                        args.push(built[keys[0]]);
+                    }
+                }
+
+                // Apply
+
+                schema = schema[rule.name](...args);
+
+                // Ruleset
+
+                const options = {};
+                for (const custom in def.modifiers) {
+                    if (rule[custom] !== undefined) {
+                        options[custom] = this.build(rule[custom]);
+                    }
+                }
+
+                if (Object.keys(options).length) {
+                    schema = schema.rule(options);
+                }
+            }
+        }
+
+        // Terms
+
+        const terms = {};
+        for (const key in desc) {
+            if (['allow', 'flags', 'invalid', 'whens', 'preferences', 'rules', 'type'].includes(key)) {
+                continue;
+            }
+
+            Assert(def.terms[key], 'Term', key, 'missing configuration');
+            const manifest = def.terms[key].manifest;
+
+            if (manifest === 'schema') {
+                terms[key] = desc[key].map((item) => this.parse(item));
+                continue;
+            }
+
+            if (manifest === 'values') {
+                terms[key] = desc[key].map((item) => this.build(item));
+                continue;
+            }
+
+            if (manifest === 'single') {
+                terms[key] = this.build(desc[key]);
+                continue;
+            }
+
+            if (typeof manifest === 'object') {
+                terms[key] = {};
+                for (const name in desc[key]) {
+                    const value = desc[key][name];
+                    terms[key][name] = this.parse(value);
+                }
+
+                continue;
+            }
+
+            terms[key] = this.build(desc[key]);
+        }
+
+        if (desc.whens) {
+            terms.whens = desc.whens.map((when) => this.build(when));
+        }
+
+        schema = def.manifest.build(schema, terms);
+        schema.$_temp.ruleset = false;
+        return schema;
+    }
+
+    build(desc, options = {}) {
+
+        if (desc === null) {
+            return null;
+        }
+
+        if (Array.isArray(desc)) {
+            return desc.map((item) => this.build(item));
+        }
+
+        if (desc instanceof Error) {
+            return desc;
+        }
+
+        if (options.assign === 'options') {
+            return Clone(desc);
+        }
+
+        if (options.assign === 'regex') {
+            return internals.regex(desc);
+        }
+
+        if (options.assign === 'ref') {
+            return Ref.build(desc);
+        }
+
+        if (typeof desc !== 'object') {
+            return desc;
+        }
+
+        if (Object.keys(desc).length === 1) {
+            if (desc.buffer) {
+                Assert(Buffer, 'Buffers are not supported');
+                return Buffer && Buffer.from(desc.buffer, 'binary');                    // $lab:coverage:ignore$
+            }
+
+            if (desc.function) {
+                return { [Common.symbols.literal]: true, literal: desc.function };
+            }
+
+            if (desc.override) {
+                return Common.symbols.override;
+            }
+
+            if (desc.ref) {
+                return Ref.build(desc.ref);
+            }
+
+            if (desc.regex) {
+                return internals.regex(desc.regex);
+            }
+
+            if (desc.special) {
+                Assert(['deep'].includes(desc.special), 'Unknown special value', desc.special);
+                return Common.symbols.deepDefault;
+            }
+
+            if (desc.value) {
+                return Clone(desc.value);
+            }
+        }
+
+        if (desc.type) {
+            return this.parse(desc);
+        }
+
+        if (desc.template) {
+            return Template.build(desc);
+        }
+
+        const normalized = {};
+        for (const key in desc) {
+            normalized[key] = this.build(desc[key], { assign: key });
+        }
+
+        return normalized;
+    }
+};
+
+
+internals.regex = function (string) {
+
+    const end = string.lastIndexOf('/');
+    const exp = string.slice(1, end);
+    const flags = string.slice(end + 1);
+    return new RegExp(exp, flags);
+};
+
+
+internals.validate = function (joi, desc) {
+
+    Schemas = Schemas || require('./schemas');
+
+    joi.assert(desc, Schemas.description);
+};