webpack-file-system-host-adapter.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
const core_1 = require("@angular-devkit/core");
const rxjs_1 = require("rxjs");
const operators_1 = require("rxjs/operators");
class WebpackFileSystemHostAdapter {
    constructor(_host) {
        this._host = _host;
        this._syncHost = null;
    }
    _doHostCall(o, callback) {
        const token = Symbol();
        let value = token;
        let error = false;
        try {
            o.subscribe({
                error(err) {
                    error = true;
                    callback(err);
                },
                next(v) {
                    value = v;
                },
                complete() {
                    if (value !== token) {
                        callback(null, value);
                    }
                    else {
                        callback(new Error('Unknown error happened.'));
                    }
                },
            });
        }
        catch (err) {
            // In some occasions, the error handler above will be called, then an exception will be
            // thrown (by design in observable constructors in RxJS 5). Don't call the callback
            // twice.
            if (!error) {
                callback(err);
            }
        }
    }
    stat(path, callback) {
        const p = core_1.normalize('/' + path);
        const result = this._host.stat(p);
        if (result === null) {
            const o = this._host.exists(p).pipe(operators_1.switchMap(exists => {
                if (!exists) {
                    throw new core_1.FileDoesNotExistException(p);
                }
                return this._host.isDirectory(p).pipe(operators_1.mergeMap(isDirectory => {
                    return (isDirectory ? rxjs_1.of(0) : this._host.read(p).pipe(operators_1.map(content => content.byteLength))).pipe(operators_1.map(size => [isDirectory, size]));
                }));
            }), operators_1.map(([isDirectory, size]) => {
                return {
                    isFile() { return !isDirectory; },
                    isDirectory() { return isDirectory; },
                    size,
                    atime: new Date(),
                    mtime: new Date(),
                    ctime: new Date(),
                    birthtime: new Date(),
                };
            }));
            this._doHostCall(o, callback);
        }
        else {
            this._doHostCall(result, callback);
        }
    }
    readdir(path, callback) {
        return this._doHostCall(this._host.list(core_1.normalize('/' + path)), callback);
    }
    readFile(path, callback) {
        const o = this._host.read(core_1.normalize('/' + path)).pipe(operators_1.map(content => Buffer.from(content)));
        return this._doHostCall(o, callback);
    }
    readJson(path, callback) {
        const o = this._host.read(core_1.normalize('/' + path)).pipe(operators_1.map(content => JSON.parse(core_1.virtualFs.fileBufferToString(content))));
        return this._doHostCall(o, callback);
    }
    readlink(path, callback) {
        const err = new Error('Not a symlink.');
        err.code = 'EINVAL';
        callback(err);
    }
    statSync(path) {
        if (!this._syncHost) {
            this._syncHost = new core_1.virtualFs.SyncDelegateHost(this._host);
        }
        const result = this._syncHost.stat(core_1.normalize('/' + path));
        if (result) {
            return result;
        }
        else {
            return {};
        }
    }
    readdirSync(path) {
        if (!this._syncHost) {
            this._syncHost = new core_1.virtualFs.SyncDelegateHost(this._host);
        }
        return this._syncHost.list(core_1.normalize('/' + path));
    }
    readFileSync(path) {
        if (!this._syncHost) {
            this._syncHost = new core_1.virtualFs.SyncDelegateHost(this._host);
        }
        return Buffer.from(this._syncHost.read(core_1.normalize('/' + path)));
    }
    readJsonSync(path) {
        if (!this._syncHost) {
            this._syncHost = new core_1.virtualFs.SyncDelegateHost(this._host);
        }
        const data = this._syncHost.read(core_1.normalize('/' + path));
        return JSON.parse(core_1.virtualFs.fileBufferToString(data));
    }
    readlinkSync(path) {
        const err = new Error('Not a symlink.');
        err.code = 'EINVAL';
        throw err;
    }
    purge(_changes) { }
}
exports.WebpackFileSystemHostAdapter = WebpackFileSystemHostAdapter;
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All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nimport { FileDoesNotExistException, JsonObject, normalize, virtualFs } from '@angular-devkit/core';\nimport { Callback } from '@ngtools/webpack/src/webpack';\nimport { Stats } from 'fs';\nimport { Observable, of } from 'rxjs';\nimport { map, mergeMap, switchMap } from 'rxjs/operators';\n\n\nexport class WebpackFileSystemHostAdapter {\n  protected _syncHost: virtualFs.SyncDelegateHost<Stats> | null = null;\n\n  constructor(protected _host: virtualFs.Host<Stats>) {}\n\n  private _doHostCall<T>(o: Observable<T>, callback: Callback<T>) {\n    const token = Symbol();\n    let value: T | typeof token = token;\n    let error = false;\n\n    try {\n      o.subscribe({\n        error(err) {\n          error = true;\n          callback(err);\n        },\n        next(v) {\n          value = v;\n        },\n        complete() {\n          if (value !== token) {\n            callback(null, value);\n          } else {\n            callback(new Error('Unknown error happened.'));\n          }\n        },\n      });\n    } catch (err) {\n      // In some occasions, the error handler above will be called, then an exception will be\n      // thrown (by design in observable constructors in RxJS 5). Don't call the callback\n      // twice.\n      if (!error) {\n        callback(err);\n      }\n    }\n  }\n\n  stat(path: string, callback: Callback<Stats>): void {\n    const p = normalize('/' + path);\n    const result = this._host.stat(p);\n\n    if (result === null) {\n      const o = this._host.exists(p).pipe(\n        switchMap(exists => {\n          if (!exists) {\n            throw new FileDoesNotExistException(p);\n          }\n\n          return this._host.isDirectory(p).pipe(\n            mergeMap(isDirectory => {\n              return (isDirectory ? of(0) : this._host.read(p).pipe(\n                map(content => content.byteLength),\n              )).pipe(\n                map(size => [isDirectory, size]),\n              );\n            }),\n          );\n        }),\n        map(([isDirectory, size]) => {\n          return {\n            isFile() { return !isDirectory; },\n            isDirectory() { return isDirectory; },\n            size,\n            atime: new Date(),\n            mtime: new Date(),\n            ctime: new Date(),\n            birthtime: new Date(),\n          };\n        }),\n      );\n\n      this._doHostCall(o, callback);\n    } else {\n      this._doHostCall(result, callback);\n    }\n  }\n\n  readdir(path: string, callback: Callback<string[]>): void {\n    return this._doHostCall(this._host.list(normalize('/' + path)), callback);\n  }\n\n  readFile(path: string, callback: Callback<Buffer>): void {\n    const o = this._host.read(normalize('/' + path)).pipe(\n      map(content => Buffer.from(content)),\n    );\n\n    return this._doHostCall(o, callback);\n  }\n\n  readJson(path: string, callback: Callback<JsonObject>): void {\n    const o = this._host.read(normalize('/' + path)).pipe(\n      map(content => JSON.parse(virtualFs.fileBufferToString(content))),\n    );\n\n    return this._doHostCall(o, callback);\n  }\n\n  readlink(path: string, callback: Callback<string>): void {\n    const err: NodeJS.ErrnoException = new Error('Not a symlink.');\n    err.code = 'EINVAL';\n    callback(err);\n  }\n\n  statSync(path: string): Stats {\n    if (!this._syncHost) {\n      this._syncHost = new virtualFs.SyncDelegateHost(this._host);\n    }\n\n    const result = this._syncHost.stat(normalize('/' + path));\n    if (result) {\n      return result;\n    } else {\n      return {} as Stats;\n    }\n  }\n  readdirSync(path: string): string[] {\n    if (!this._syncHost) {\n      this._syncHost = new virtualFs.SyncDelegateHost(this._host);\n    }\n\n    return this._syncHost.list(normalize('/' + path));\n  }\n  readFileSync(path: string): Buffer {\n    if (!this._syncHost) {\n      this._syncHost = new virtualFs.SyncDelegateHost(this._host);\n    }\n\n    return Buffer.from(this._syncHost.read(normalize('/' + path)));\n  }\n  readJsonSync(path: string): {} {\n    if (!this._syncHost) {\n      this._syncHost = new virtualFs.SyncDelegateHost(this._host);\n    }\n\n    const data = this._syncHost.read(normalize('/' + path));\n\n    return JSON.parse(virtualFs.fileBufferToString(data));\n  }\n  readlinkSync(path: string): string {\n    const err: NodeJS.ErrnoException = new Error('Not a symlink.');\n    err.code = 'EINVAL';\n    throw err;\n  }\n\n  purge(_changes?: string[] | string): void {}\n}\n"]}