@angular-devkit/core
Version:
Angular DevKit - Core Utility Library
331 lines • 39.1 kB
JavaScript
"use strict";
/**
* @license
* Copyright Google LLC 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
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.SimpleMemoryHost = void 0;
const rxjs_1 = require("rxjs");
const exception_1 = require("../../exception");
const path_1 = require("../path");
class SimpleMemoryHost {
_newDirStats() {
return {
inspect() {
return '<Directory>';
},
isFile() {
return false;
},
isDirectory() {
return true;
},
size: 0,
atime: new Date(),
ctime: new Date(),
mtime: new Date(),
birthtime: new Date(),
content: null,
};
}
_newFileStats(content, oldStats) {
return {
inspect() {
return `<File size(${content.byteLength})>`;
},
isFile() {
return true;
},
isDirectory() {
return false;
},
size: content.byteLength,
atime: oldStats ? oldStats.atime : new Date(),
ctime: new Date(),
mtime: new Date(),
birthtime: oldStats ? oldStats.birthtime : new Date(),
content,
};
}
constructor() {
this._cache = new Map();
this._watchers = new Map();
this._cache.set((0, path_1.normalize)('/'), this._newDirStats());
}
_toAbsolute(path) {
return (0, path_1.isAbsolute)(path) ? path : (0, path_1.normalize)('/' + path);
}
_updateWatchers(path, type) {
const time = new Date();
let currentPath = path;
let parent = null;
if (this._watchers.size == 0) {
// Nothing to do if there's no watchers.
return;
}
const maybeWatcher = this._watchers.get(currentPath);
if (maybeWatcher) {
maybeWatcher.forEach((watcher) => {
const [options, subject] = watcher;
subject.next({ path, time, type });
if (!options.persistent && type == 2 /* HostWatchEventType.Deleted */) {
subject.complete();
this._watchers.delete(currentPath);
}
});
}
do {
currentPath = parent !== null ? parent : currentPath;
parent = (0, path_1.dirname)(currentPath);
const maybeWatcher = this._watchers.get(currentPath);
if (maybeWatcher) {
maybeWatcher.forEach((watcher) => {
const [options, subject] = watcher;
if (!options.recursive) {
return;
}
subject.next({ path, time, type });
if (!options.persistent && type == 2 /* HostWatchEventType.Deleted */) {
subject.complete();
this._watchers.delete(currentPath);
}
});
}
} while (parent != currentPath);
}
get capabilities() {
return { synchronous: true };
}
/**
* List of protected methods that give direct access outside the observables to the cache
* and internal states.
*/
_write(path, content) {
path = this._toAbsolute(path);
const old = this._cache.get(path);
if (old && old.isDirectory()) {
throw new exception_1.PathIsDirectoryException(path);
}
// Update all directories. If we find a file we know it's an invalid write.
const fragments = (0, path_1.split)(path);
let curr = (0, path_1.normalize)('/');
for (const fr of fragments) {
curr = (0, path_1.join)(curr, fr);
const maybeStats = this._cache.get(fr);
if (maybeStats) {
if (maybeStats.isFile()) {
throw new exception_1.PathIsFileException(curr);
}
}
else {
this._cache.set(curr, this._newDirStats());
}
}
// Create the stats.
const stats = this._newFileStats(content, old);
this._cache.set(path, stats);
this._updateWatchers(path, old ? 0 /* HostWatchEventType.Changed */ : 1 /* HostWatchEventType.Created */);
}
_read(path) {
path = this._toAbsolute(path);
const maybeStats = this._cache.get(path);
if (!maybeStats) {
throw new exception_1.FileDoesNotExistException(path);
}
else if (maybeStats.isDirectory()) {
throw new exception_1.PathIsDirectoryException(path);
}
else if (!maybeStats.content) {
throw new exception_1.PathIsDirectoryException(path);
}
else {
return maybeStats.content;
}
}
_delete(path) {
path = this._toAbsolute(path);
if (this._isDirectory(path)) {
for (const [cachePath] of this._cache.entries()) {
if (cachePath.startsWith(path + path_1.NormalizedSep) || cachePath === path) {
this._cache.delete(cachePath);
}
}
}
else {
this._cache.delete(path);
}
this._updateWatchers(path, 2 /* HostWatchEventType.Deleted */);
}
_rename(from, to) {
from = this._toAbsolute(from);
to = this._toAbsolute(to);
if (!this._cache.has(from)) {
throw new exception_1.FileDoesNotExistException(from);
}
else if (this._cache.has(to)) {
throw new exception_1.FileAlreadyExistException(to);
}
if (this._isDirectory(from)) {
for (const path of this._cache.keys()) {
if (path.startsWith(from + path_1.NormalizedSep)) {
const content = this._cache.get(path);
if (content) {
// We don't need to clone or extract the content, since we're moving files.
this._cache.set((0, path_1.join)(to, path_1.NormalizedSep, path.slice(from.length)), content);
}
}
}
}
else {
const content = this._cache.get(from);
if (content) {
const fragments = (0, path_1.split)(to);
const newDirectories = [];
let curr = (0, path_1.normalize)('/');
for (const fr of fragments) {
curr = (0, path_1.join)(curr, fr);
const maybeStats = this._cache.get(fr);
if (maybeStats) {
if (maybeStats.isFile()) {
throw new exception_1.PathIsFileException(curr);
}
}
else {
newDirectories.push(curr);
}
}
for (const newDirectory of newDirectories) {
this._cache.set(newDirectory, this._newDirStats());
}
this._cache.delete(from);
this._cache.set(to, content);
}
}
this._updateWatchers(from, 3 /* HostWatchEventType.Renamed */);
}
_list(path) {
path = this._toAbsolute(path);
if (this._isFile(path)) {
throw new exception_1.PathIsFileException(path);
}
const fragments = (0, path_1.split)(path);
const result = new Set();
if (path !== path_1.NormalizedRoot) {
for (const p of this._cache.keys()) {
if (p.startsWith(path + path_1.NormalizedSep)) {
result.add((0, path_1.split)(p)[fragments.length]);
}
}
}
else {
for (const p of this._cache.keys()) {
if (p.startsWith(path_1.NormalizedSep) && p !== path_1.NormalizedRoot) {
result.add((0, path_1.split)(p)[1]);
}
}
}
return [...result];
}
_exists(path) {
return !!this._cache.get(this._toAbsolute(path));
}
_isDirectory(path) {
const maybeStats = this._cache.get(this._toAbsolute(path));
return maybeStats ? maybeStats.isDirectory() : false;
}
_isFile(path) {
const maybeStats = this._cache.get(this._toAbsolute(path));
return maybeStats ? maybeStats.isFile() : false;
}
_stat(path) {
const maybeStats = this._cache.get(this._toAbsolute(path));
if (!maybeStats) {
return null;
}
else {
return maybeStats;
}
}
_watch(path, options) {
path = this._toAbsolute(path);
const subject = new rxjs_1.Subject();
let maybeWatcherArray = this._watchers.get(path);
if (!maybeWatcherArray) {
maybeWatcherArray = [];
this._watchers.set(path, maybeWatcherArray);
}
maybeWatcherArray.push([options || {}, subject]);
return subject.asObservable();
}
write(path, content) {
return new rxjs_1.Observable((obs) => {
this._write(path, content);
obs.next();
obs.complete();
});
}
read(path) {
return new rxjs_1.Observable((obs) => {
const content = this._read(path);
obs.next(content);
obs.complete();
});
}
delete(path) {
return new rxjs_1.Observable((obs) => {
this._delete(path);
obs.next();
obs.complete();
});
}
rename(from, to) {
return new rxjs_1.Observable((obs) => {
this._rename(from, to);
obs.next();
obs.complete();
});
}
list(path) {
return new rxjs_1.Observable((obs) => {
obs.next(this._list(path));
obs.complete();
});
}
exists(path) {
return new rxjs_1.Observable((obs) => {
obs.next(this._exists(path));
obs.complete();
});
}
isDirectory(path) {
return new rxjs_1.Observable((obs) => {
obs.next(this._isDirectory(path));
obs.complete();
});
}
isFile(path) {
return new rxjs_1.Observable((obs) => {
obs.next(this._isFile(path));
obs.complete();
});
}
// Some hosts may not support stat.
stat(path) {
return new rxjs_1.Observable((obs) => {
obs.next(this._stat(path));
obs.complete();
});
}
watch(path, options) {
return this._watch(path, options);
}
reset() {
this._cache.clear();
this._watchers.clear();
}
}
exports.SimpleMemoryHost = SimpleMemoryHost;
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* @license\n * Copyright Google LLC 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 */\n\nimport { Observable, Subject } from 'rxjs';\nimport {\n  FileAlreadyExistException,\n  FileDoesNotExistException,\n  PathIsDirectoryException,\n  PathIsFileException,\n} from '../../exception';\nimport {\n  NormalizedRoot,\n  NormalizedSep,\n  Path,\n  PathFragment,\n  dirname,\n  isAbsolute,\n  join,\n  normalize,\n  split,\n} from '../path';\nimport {\n  FileBuffer,\n  Host,\n  HostCapabilities,\n  HostWatchEvent,\n  HostWatchEventType,\n  HostWatchOptions,\n  Stats,\n} from './interface';\n\nexport interface SimpleMemoryHostStats {\n  readonly content: FileBuffer | null;\n}\n\nexport class SimpleMemoryHost implements Host<{}> {\n  protected _cache = new Map<Path, Stats<SimpleMemoryHostStats>>();\n  private _watchers = new Map<Path, [HostWatchOptions, Subject<HostWatchEvent>][]>();\n\n  protected _newDirStats() {\n    return {\n      inspect() {\n        return '<Directory>';\n      },\n\n      isFile() {\n        return false;\n      },\n      isDirectory() {\n        return true;\n      },\n      size: 0,\n\n      atime: new Date(),\n      ctime: new Date(),\n      mtime: new Date(),\n      birthtime: new Date(),\n\n      content: null,\n    };\n  }\n  protected _newFileStats(content: FileBuffer, oldStats?: Stats<SimpleMemoryHostStats>) {\n    return {\n      inspect() {\n        return `<File size(${content.byteLength})>`;\n      },\n\n      isFile() {\n        return true;\n      },\n      isDirectory() {\n        return false;\n      },\n      size: content.byteLength,\n\n      atime: oldStats ? oldStats.atime : new Date(),\n      ctime: new Date(),\n      mtime: new Date(),\n      birthtime: oldStats ? oldStats.birthtime : new Date(),\n\n      content,\n    };\n  }\n\n  constructor() {\n    this._cache.set(normalize('/'), this._newDirStats());\n  }\n\n  protected _toAbsolute(path: Path) {\n    return isAbsolute(path) ? path : normalize('/' + path);\n  }\n\n  protected _updateWatchers(path: Path, type: HostWatchEventType) {\n    const time = new Date();\n    let currentPath = path;\n    let parent: Path | null = null;\n\n    if (this._watchers.size == 0) {\n      // Nothing to do if there's no watchers.\n      return;\n    }\n\n    const maybeWatcher = this._watchers.get(currentPath);\n    if (maybeWatcher) {\n      maybeWatcher.forEach((watcher) => {\n        const [options, subject] = watcher;\n        subject.next({ path, time, type });\n\n        if (!options.persistent && type == HostWatchEventType.Deleted) {\n          subject.complete();\n          this._watchers.delete(currentPath);\n        }\n      });\n    }\n\n    do {\n      currentPath = parent !== null ? parent : currentPath;\n      parent = dirname(currentPath);\n\n      const maybeWatcher = this._watchers.get(currentPath);\n      if (maybeWatcher) {\n        maybeWatcher.forEach((watcher) => {\n          const [options, subject] = watcher;\n          if (!options.recursive) {\n            return;\n          }\n          subject.next({ path, time, type });\n\n          if (!options.persistent && type == HostWatchEventType.Deleted) {\n            subject.complete();\n            this._watchers.delete(currentPath);\n          }\n        });\n      }\n    } while (parent != currentPath);\n  }\n\n  get capabilities(): HostCapabilities {\n    return { synchronous: true };\n  }\n\n  /**\n   * List of protected methods that give direct access outside the observables to the cache\n   * and internal states.\n   */\n  protected _write(path: Path, content: FileBuffer): void {\n    path = this._toAbsolute(path);\n    const old = this._cache.get(path);\n    if (old && old.isDirectory()) {\n      throw new PathIsDirectoryException(path);\n    }\n\n    // Update all directories. If we find a file we know it's an invalid write.\n    const fragments = split(path);\n    let curr: Path = normalize('/');\n    for (const fr of fragments) {\n      curr = join(curr, fr);\n      const maybeStats = this._cache.get(fr);\n      if (maybeStats) {\n        if (maybeStats.isFile()) {\n          throw new PathIsFileException(curr);\n        }\n      } else {\n        this._cache.set(curr, this._newDirStats());\n      }\n    }\n\n    // Create the stats.\n    const stats: Stats<SimpleMemoryHostStats> = this._newFileStats(content, old);\n    this._cache.set(path, stats);\n    this._updateWatchers(path, old ? HostWatchEventType.Changed : HostWatchEventType.Created);\n  }\n  protected _read(path: Path): FileBuffer {\n    path = this._toAbsolute(path);\n    const maybeStats = this._cache.get(path);\n    if (!maybeStats) {\n      throw new FileDoesNotExistException(path);\n    } else if (maybeStats.isDirectory()) {\n      throw new PathIsDirectoryException(path);\n    } else if (!maybeStats.content) {\n      throw new PathIsDirectoryException(path);\n    } else {\n      return maybeStats.content;\n    }\n  }\n  protected _delete(path: Path): void {\n    path = this._toAbsolute(path);\n    if (this._isDirectory(path)) {\n      for (const [cachePath] of this._cache.entries()) {\n        if (cachePath.startsWith(path + NormalizedSep) || cachePath === path) {\n          this._cache.delete(cachePath);\n        }\n      }\n    } else {\n      this._cache.delete(path);\n    }\n    this._updateWatchers(path, HostWatchEventType.Deleted);\n  }\n  protected _rename(from: Path, to: Path): void {\n    from = this._toAbsolute(from);\n    to = this._toAbsolute(to);\n    if (!this._cache.has(from)) {\n      throw new FileDoesNotExistException(from);\n    } else if (this._cache.has(to)) {\n      throw new FileAlreadyExistException(to);\n    }\n\n    if (this._isDirectory(from)) {\n      for (const path of this._cache.keys()) {\n        if (path.startsWith(from + NormalizedSep)) {\n          const content = this._cache.get(path);\n          if (content) {\n            // We don't need to clone or extract the content, since we're moving files.\n            this._cache.set(join(to, NormalizedSep, path.slice(from.length)), content);\n          }\n        }\n      }\n    } else {\n      const content = this._cache.get(from);\n      if (content) {\n        const fragments = split(to);\n        const newDirectories: Path[] = [];\n        let curr: Path = normalize('/');\n        for (const fr of fragments) {\n          curr = join(curr, fr);\n          const maybeStats = this._cache.get(fr);\n          if (maybeStats) {\n            if (maybeStats.isFile()) {\n              throw new PathIsFileException(curr);\n            }\n          } else {\n            newDirectories.push(curr);\n          }\n        }\n        for (const newDirectory of newDirectories) {\n          this._cache.set(newDirectory, this._newDirStats());\n        }\n        this._cache.delete(from);\n        this._cache.set(to, content);\n      }\n    }\n\n    this._updateWatchers(from, HostWatchEventType.Renamed);\n  }\n\n  protected _list(path: Path): PathFragment[] {\n    path = this._toAbsolute(path);\n    if (this._isFile(path)) {\n      throw new PathIsFileException(path);\n    }\n\n    const fragments = split(path);\n    const result = new Set<PathFragment>();\n    if (path !== NormalizedRoot) {\n      for (const p of this._cache.keys()) {\n        if (p.startsWith(path + NormalizedSep)) {\n          result.add(split(p)[fragments.length]);\n        }\n      }\n    } else {\n      for (const p of this._cache.keys()) {\n        if (p.startsWith(NormalizedSep) && p !== NormalizedRoot) {\n          result.add(split(p)[1]);\n        }\n      }\n    }\n\n    return [...result];\n  }\n\n  protected _exists(path: Path): boolean {\n    return !!this._cache.get(this._toAbsolute(path));\n  }\n  protected _isDirectory(path: Path): boolean {\n    const maybeStats = this._cache.get(this._toAbsolute(path));\n\n    return maybeStats ? maybeStats.isDirectory() : false;\n  }\n  protected _isFile(path: Path): boolean {\n    const maybeStats = this._cache.get(this._toAbsolute(path));\n\n    return maybeStats ? maybeStats.isFile() : false;\n  }\n\n  protected _stat(path: Path): Stats<SimpleMemoryHostStats> | null {\n    const maybeStats = this._cache.get(this._toAbsolute(path));\n\n    if (!maybeStats) {\n      return null;\n    } else {\n      return maybeStats;\n    }\n  }\n\n  protected _watch(path: Path, options?: HostWatchOptions): Observable<HostWatchEvent> {\n    path = this._toAbsolute(path);\n\n    const subject = new Subject<HostWatchEvent>();\n    let maybeWatcherArray = this._watchers.get(path);\n    if (!maybeWatcherArray) {\n      maybeWatcherArray = [];\n      this._watchers.set(path, maybeWatcherArray);\n    }\n\n    maybeWatcherArray.push([options || {}, subject]);\n\n    return subject.asObservable();\n  }\n\n  write(path: Path, content: FileBuffer): Observable<void> {\n    return new Observable<void>((obs) => {\n      this._write(path, content);\n      obs.next();\n      obs.complete();\n    });\n  }\n\n  read(path: Path): Observable<FileBuffer> {\n    return new Observable<FileBuffer>((obs) => {\n      const content = this._read(path);\n      obs.next(content);\n      obs.complete();\n    });\n  }\n\n  delete(path: Path): Observable<void> {\n    return new Observable<void>((obs) => {\n      this._delete(path);\n      obs.next();\n      obs.complete();\n    });\n  }\n\n  rename(from: Path, to: Path): Observable<void> {\n    return new Observable<void>((obs) => {\n      this._rename(from, to);\n      obs.next();\n      obs.complete();\n    });\n  }\n\n  list(path: Path): Observable<PathFragment[]> {\n    return new Observable<PathFragment[]>((obs) => {\n      obs.next(this._list(path));\n      obs.complete();\n    });\n  }\n\n  exists(path: Path): Observable<boolean> {\n    return new Observable<boolean>((obs) => {\n      obs.next(this._exists(path));\n      obs.complete();\n    });\n  }\n\n  isDirectory(path: Path): Observable<boolean> {\n    return new Observable<boolean>((obs) => {\n      obs.next(this._isDirectory(path));\n      obs.complete();\n    });\n  }\n\n  isFile(path: Path): Observable<boolean> {\n    return new Observable<boolean>((obs) => {\n      obs.next(this._isFile(path));\n      obs.complete();\n    });\n  }\n\n  // Some hosts may not support stat.\n  stat(path: Path): Observable<Stats<{}> | null> | null {\n    return new Observable<Stats<{}> | null>((obs) => {\n      obs.next(this._stat(path));\n      obs.complete();\n    });\n  }\n\n  watch(path: Path, options?: HostWatchOptions): Observable<HostWatchEvent> | null {\n    return this._watch(path, options);\n  }\n\n  reset(): void {\n    this._cache.clear();\n    this._watchers.clear();\n  }\n}\n"]}