text: /*---------------------------------------------------------------------------------------------
   *  Copyright (c) Microsoft Corporation. All rights reserved.
   *  Licensed under the MIT License. See License.txt in the project root for license information.
   *--------------------------------------------------------------------------------------------*/
  var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
      function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
      return new (P || (P = Promise))(function (resolve, reject) {
          function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
          function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
          function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
          step((generator = generator.apply(thisArg, _arguments || [])).next());
      });
  };
  var __generator = (this && this.__generator) || function (thisArg, body) {
      var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
      return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
      function verb(n) { return function (v) { return step([n, v]); }; }
      function step(op) {
          if (f) throw new TypeError("Generator is already executing.");
          while (_) try {
              if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
              if (y = 0, t) op = [op[0] & 2, t.value];
              switch (op[0]) {
                  case 0: case 1: t = op; break;
                  case 4: _.label++; return { value: op[1], done: false };
                  case 5: _.label++; y = op[1]; op = [0]; continue;
                  case 7: op = _.ops.pop(); _.trys.pop(); continue;
                  default:
                      if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
                      if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
                      if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
                      if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
                      if (t[2]) _.ops.pop();
                      _.trys.pop(); continue;
              }
              op = body.call(thisArg, _);
          } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
          if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
      }
  };
  import { CompletionItemKind, TextEdit, Range, Position, FileType } from '../htmlLanguageTypes';
  import { startsWith } from '../utils/strings';
  var PathCompletionParticipant = /** @class */ (function () {
      function PathCompletionParticipant(readDirectory) {
          this.readDirectory = readDirectory;
          this.atributeCompletions = [];
      }
      PathCompletionParticipant.prototype.onHtmlAttributeValue = function (context) {
          if (isPathAttribute(context.tag, context.attribute)) {
              this.atributeCompletions.push(context);
          }
      };
      PathCompletionParticipant.prototype.computeCompletions = function (document, documentContext) {
          return __awaiter(this, void 0, void 0, function () {
              var result, _i, _a, attributeCompletion, fullValue, replaceRange, suggestions, _b, suggestions_1, item;
              return __generator(this, function (_c) {
                  switch (_c.label) {
                      case 0:
                          result = { items: [], isIncomplete: false };
                          _i = 0, _a = this.atributeCompletions;
                          _c.label = 1;
                      case 1:
                          if (!(_i < _a.length)) return [3 /*break*/, 5];
                          attributeCompletion = _a[_i];
                          fullValue = stripQuotes(document.getText(attributeCompletion.range));
                          if (!isCompletablePath(fullValue)) return [3 /*break*/, 4];
                          if (!(fullValue === '.' || fullValue === '..')) return [3 /*break*/, 2];
                          result.isIncomplete = true;
                          return [3 /*break*/, 4];
                      case 2:
                          replaceRange = pathToReplaceRange(attributeCompletion.value, fullValue, attributeCompletion.range);
                          return [4 /*yield*/, this.providePathSuggestions(attributeCompletion.value, replaceRange, document, documentContext)];
                      case 3:
                          suggestions = _c.sent();
                          for (_b = 0, suggestions_1 = suggestions; _b < suggestions_1.length; _b++) {
                              item = suggestions_1[_b];
                              result.items.push(item);
                          }
                          _c.label = 4;
                      case 4:
                          _i++;
                          return [3 /*break*/, 1];
                      case 5: return [2 /*return*/, result];
                  }
              });
          });
      };
      PathCompletionParticipant.prototype.providePathSuggestions = function (valueBeforeCursor, replaceRange, document, documentContext) {
          return __awaiter(this, void 0, void 0, function () {
              var valueBeforeLastSlash, parentDir, result, infos, _i, infos_1, _a, name, type, e_1;
              return __generator(this, function (_b) {
                  switch (_b.label) {
                      case 0:
                          valueBeforeLastSlash = valueBeforeCursor.substring(0, valueBeforeCursor.lastIndexOf('/') + 1);
                          parentDir = documentContext.resolveReference(valueBeforeLastSlash || '.', document.uri);
                          if (!parentDir) return [3 /*break*/, 4];
                          _b.label = 1;
                      case 1:
                          _b.trys.push([1, 3, , 4]);
                          result = [];
                          return [4 /*yield*/, this.readDirectory(parentDir)];
                      case 2:
                          infos = _b.sent();
                          for (_i = 0, infos_1 = infos; _i < infos_1.length; _i++) {
                              _a = infos_1[_i], name = _a[0], type = _a[1];
                              // Exclude paths that start with `.`
                              if (name.charCodeAt(0) !== CharCode_dot) {
                                  result.push(createCompletionItem(name, type === FileType.Directory, replaceRange));
                              }
                          }
                          return [2 /*return*/, result];
                      case 3:
                          e_1 = _b.sent();
                          return [3 /*break*/, 4];
                      case 4: return [2 /*return*/, []];
                  }
              });
          });
      };
      return PathCompletionParticipant;
  }());
  export { PathCompletionParticipant };
  var CharCode_dot = '.'.charCodeAt(0);
  function stripQuotes(fullValue) {
      if (startsWith(fullValue, "'") || startsWith(fullValue, "\"")) {
          return fullValue.slice(1, -1);
      }
      else {
          return fullValue;
      }
  }
  function isCompletablePath(value) {
      if (startsWith(value, 'http') || startsWith(value, 'https') || startsWith(value, '//')) {
          return false;
      }
      return true;
  }
  function isPathAttribute(tag, attr) {
      var a = PATH_TAG_AND_ATTR[tag];
      if (a) {
          if (typeof a === 'string') {
              return a === attr;
          }
          else {
              return a.indexOf(attr) !== -1;
          }
      }
      return false;
  }
  function pathToReplaceRange(valueBeforeCursor, fullValue, range) {
      var replaceRange;
      var lastIndexOfSlash = valueBeforeCursor.lastIndexOf('/');
      if (lastIndexOfSlash === -1) {
          replaceRange = shiftRange(range, 1, -1);
      }
      else {
          // For cases where cursor is in the middle of attribute value, like <script src="./s|rc/test.js">
          // Find the last slash before cursor, and calculate the start of replace range from there
          var valueAfterLastSlash = fullValue.slice(lastIndexOfSlash + 1);
          var startPos = shiftPosition(range.end, -1 - valueAfterLastSlash.length);
          // If whitespace exists, replace until there is no more
          var whitespaceIndex = valueAfterLastSlash.indexOf(' ');
          var endPos = void 0;
          if (whitespaceIndex !== -1) {
              endPos = shiftPosition(startPos, whitespaceIndex);
          }
          else {
              endPos = shiftPosition(range.end, -1);
          }
          replaceRange = Range.create(startPos, endPos);
      }
      return replaceRange;
  }
  function createCompletionItem(p, isDir, replaceRange) {
      if (isDir) {
          p = p + '/';
          return {
              label: p,
              kind: CompletionItemKind.Folder,
              textEdit: TextEdit.replace(replaceRange, p),
              command: {
                  title: 'Suggest',
                  command: 'editor.action.triggerSuggest'
              }
          };
      }
      else {
          return {
              label: p,
              kind: CompletionItemKind.File,
              textEdit: TextEdit.replace(replaceRange, p)
          };
      }
  }
  function shiftPosition(pos, offset) {
      return Position.create(pos.line, pos.character + offset);
  }
  function shiftRange(range, startOffset, endOffset) {
      var start = shiftPosition(range.start, startOffset);
      var end = shiftPosition(range.end, endOffset);
      return Range.create(start, end);
  }
  // Selected from https://stackoverflow.com/a/2725168/1780148
  var PATH_TAG_AND_ATTR = {
      // HTML 4
      a: 'href',
      area: 'href',
      body: 'background',
      del: 'cite',
      form: 'action',
      frame: ['src', 'longdesc'],
      img: ['src', 'longdesc'],
      ins: 'cite',
      link: 'href',
      object: 'data',
      q: 'cite',
      script: 'src',
      // HTML 5
      audio: 'src',
      button: 'formaction',
      command: 'icon',
      embed: 'src',
      html: 'manifest',
      input: ['src', 'formaction'],
      source: 'src',
      track: 'src',
      video: ['src', 'poster']
  };
  