98 lines
3.1 KiB
JavaScript
98 lines
3.1 KiB
JavaScript
chrome.runtime.onMessage.addListener(
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function (request, sender, sendResponse) {
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// console.log(request);
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switch (request.from) {
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case "DataExtracter:Extract":
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let data = extractTabData(request.itemsSelector, request.fieldSelectors);
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if (sendResponse) sendResponse(data);
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break;
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case "DataExtracter:GotoUrl":
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window.location.replace(request.url);
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if (sendResponse) sendResponse(request.url);
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break;
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case "DataExtracter:ReportIn":
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if (sendResponse) sendResponse(request.from);
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break;
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case "DataExtracter:QueryUrl":
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if (sendResponse) sendResponse(window.location.href);
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break;
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default:
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break;
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}
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}
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);
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function extractTabData(itemsSelector, fieldSelectors) {
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return $(itemsSelector).toArray().map(
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item => fieldSelectors.map(
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selector => {
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let [cls, attr] = selector.split('@').slice(0, 2);
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return $(item).find(cls).toArray().map(find => attr ? find[attr] : find.textContent.trim()).join('\n')
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}
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)
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);
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}
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function extract(...args) {
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let sig = `
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# DataExtracter Help
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----------------------------
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## Signitures:
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----------------------------
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function extract(itemsSelector:string, fieldSelectors:string[])
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function extract(itemsSelector:string, fieldSelectors:string[], url:string, from:number, to:number, interval:number)
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function extract(itemsSelector:string, fieldSelectors:string, url:string, pages:number[])
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function extract(itemsSelector:string, fieldSelectors:string[], urls:string[])
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## Examples:
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----------------------------
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### Extract current page
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extract(".list-item", ["a.title", "p.content"])
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### Extract multiple pages (1-10, interval 1)
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extract(".list-item", ["a.title", "p.content"],"http://sample.com/?pn=\${page}", 1, 10, 1)
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### Extract specified pages (1,3,5)
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extract(".list-item", ["a.title", "p.content"], "http://sample.com/?pn=\${page}", [1, 3, 5])
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## Advanced Examples:
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----------------------------
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### Extract link text and target (use 'selector@attribute')
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extract('.list-item', ['a.title', 'a.title@href'])
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`.trim();
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if (!testArgs(...args)) {
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console.log(sig);
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return;
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}
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if (args.length == 2) {
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let data = extractTabData(args[0], args[1]);
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data.unshift(args[1]);
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saveFileAsk(data);
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return;
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}
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let message = {
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from: "DataExtracter:Extract",
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args: args
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}
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chrome.runtime.sendMessage(message, r => {
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if (r) {
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console.log(r);
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alert(r);
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}
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});
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}
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function testArgs(...args) {
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if (args.length < 2) return false;
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if (args.length == 2)
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return (args[0] && args[1] && (typeof args[0] == "string") && (args[1] instanceof Array))
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let urls = [];
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if (args.length > 2) return (typeof args[2] == "string") && (
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(args[3] instanceof Array) ||
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(!isNaN(args[3]) && !isNaN(args[4]) && !isNaN(args[5]))
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)
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} |