72 lines
2.5 KiB
JavaScript
72 lines
2.5 KiB
JavaScript
const signitures = `
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## Usage
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// single task
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$(...args);
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// managed task chains
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e = new Extractor();
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e.task(...args).task(...args).start();
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## Task Call Signitures:
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function(itemsSelector:string, fieldSelectors:string[]);
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function(itemsSelector:string, fieldSelectors:string[], url:string, from:number, to:number, interval:number);
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function(itemsSelector:string, fieldSelectors:string[], url:string, pages:number[]);
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function(itemsSelector:string, fieldSelectors:string[], urls:string[]);
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## Example:
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// extract all links text & url under '.item' elements
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// use 'selector@attr' to get attribute of the field elements
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$(".item", ["a", "a@href"]);
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## See Detailed Help:
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https://git.jebbs.co/jebbs/data-extracter-extesion
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`.trim();
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function testArgs(...args) {
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switch (args.length) {
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case 0, 1:
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return false;
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case 2:
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return args[0] && args[1] &&
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(typeof args[0] == "string") &&
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(args[1] instanceof Array) &&
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testArrayVals(args[1], v => typeof v == "string");
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case 3:
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return args[0] && args[1] &&
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typeof args[0] == "string" &&
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args[1] instanceof Array &&
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testArrayVals(args[1], v => typeof v == "string") &&
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(
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(
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args[2] instanceof Array &&
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testArrayVals(args[2], v => typeof v == "string")
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) || (
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args[2] instanceof ExtractResult
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)
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);
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case 4:
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return args[0] && args[1] &&
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typeof args[0] == "string" &&
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args[1] instanceof Array &&
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testArrayVals(args[1], v => typeof v == "string") &&
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typeof args[2] == "string" &&
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args[3] instanceof Array &&
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testArrayVals(args[3], v => typeof v == "number");
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case 6:
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return args[0] && args[1] &&
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typeof args[0] == "string" &&
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args[1] instanceof Array &&
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testArrayVals(args[1], v => typeof v == "string") &&
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typeof args[2] == "string" &&
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!isNaN(args[3]) && !isNaN(args[4]) && !isNaN(args[5]);
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default:
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return false;
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}
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function testArrayVals(arr, tester) {
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return arr.reduce((p, c) => p && tester(c), true);
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}
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}
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function argsToString(...args) {
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return args.map(v => (v instanceof Array ? `[${v.join(', ')}]` : v.toString())).join(', ');
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} |