syphonx-core
Version:
SyphonX is a template-driven solution for extracting data from HTML in a highly efficient way. It combines the power of jQuery, Regular Expressions, and Javascript into a declarative template-driven format that extracts and reshapes HTML data into JSON.
146 lines • 7.83 kB
JavaScript
;
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 (g && (g = 0, op[0] && (_ = 0)), _) 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 };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.autoPaginate = void 0;
var sleep_js_1 = require("./sleep.js");
function autoPaginate(_a) {
var item_selector = _a.item_selector, next_button_selector = _a.next_button_selector, _b = _a.max_pages, max_pages = _b === void 0 ? 25 : _b, _c = _a.min_click_delay, min_click_delay = _c === void 0 ? 1000 : _c, max_click_delay = _a.max_click_delay, _d = _a.timeout, timeout = _d === void 0 ? 30000 : _d;
return __awaiter(this, void 0, void 0, function () {
function getCurrentItems() {
return $(item_selector).toArray().map(function (element) { return $(element); });
}
function itemsAreEqual(items1, items2) {
if (items1.length !== items2.length)
return false;
for (var i = 0; i < items1.length; i++)
if (!items1[i].is(items2[i]))
return false;
return true;
}
function waitForPageLoad(previousItems, timeout) {
if (timeout === void 0) { timeout = 1000; }
return __awaiter(this, void 0, void 0, function () {
var t0;
return __generator(this, function (_a) {
t0 = Date.now();
return [2, new Promise(function (resolve) {
var checkForNewContent = function () {
var currentItems = getCurrentItems();
if (currentItems.length > 0 && !itemsAreEqual(currentItems, previousItems))
resolve(true);
else if (Date.now() - t0 > timeout)
resolve(false);
else
setTimeout(checkForNewContent, 100);
};
checkForNewContent();
})];
});
});
}
var pages, from, allItems, status, currentItems, $next, itemsBeforeClick, t0, ok, interval, $container;
return __generator(this, function (_e) {
switch (_e.label) {
case 0:
pages = 0;
from = $(item_selector).length;
if (from === 0)
return [2, { from: 0, to: 0, pages: pages, status: "no items found" }];
if ($(next_button_selector).length === 0)
return [2, { from: from, to: from, pages: pages, status: "next page button not found" }];
if (max_click_delay === undefined)
max_click_delay = min_click_delay;
else if (max_click_delay < min_click_delay)
max_click_delay = min_click_delay;
allItems = [];
status = "ok";
_e.label = 1;
case 1:
if (!(status === "ok" && max_pages-- > 0)) return [3, 10];
currentItems = getCurrentItems();
allItems.push.apply(allItems, currentItems);
$next = $(next_button_selector);
if ($next.length === 0)
return [3, 10];
itemsBeforeClick = getCurrentItems();
t0 = Date.now();
_e.label = 2;
case 2:
if (!(Date.now() - t0 < timeout)) return [3, 9];
$next[0].scrollIntoView({ block: "center", behavior: "smooth" });
return [4, (0, sleep_js_1.sleep)(500)];
case 3:
_e.sent();
$next[0].focus();
return [4, (0, sleep_js_1.sleep)(100)];
case 4:
_e.sent();
$next[0].click();
return [4, waitForPageLoad(itemsBeforeClick, 1000)];
case 5:
ok = _e.sent();
if (!ok) return [3, 7];
status = "ok";
interval = Math.random() * (max_click_delay - min_click_delay) + min_click_delay;
return [4, (0, sleep_js_1.sleep)(interval)];
case 6:
_e.sent();
return [3, 9];
case 7:
status = "timeout waiting for next page";
$next = $(next_button_selector);
if ($next.length === 0) {
status += ", next page button not found";
return [3, 9];
}
_e.label = 8;
case 8: return [3, 2];
case 9:
pages += 1;
return [3, 1];
case 10:
$container = $(item_selector).parent();
$(item_selector).remove();
allItems.forEach(function (item) { return $container.append(item); });
return [2, { from: from, to: allItems.length, pages: pages, status: status }];
}
});
});
}
exports.autoPaginate = autoPaginate;
//# sourceMappingURL=autopaginate.js.map