Simon Vieille
b680003549
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111 lines
2.5 KiB
JavaScript
111 lines
2.5 KiB
JavaScript
const Output = require('./console/output')
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const Input = require('./console/input')
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const scraper = require('./index')
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const output = new Output()
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const input = new Input(process)
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const filters = [
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'breaks',
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'spaces',
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'tags',
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'trim',
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]
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const usage = `
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${input.node} ${input.script} [params]
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Parameters
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--url [URL] URL to scrap
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--selector [Selector] CSS selector
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Optional parameters
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Filters
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Order has a meaning.
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--breaks Removes breaks (\\n, \\r)
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--trim Strips whitespaces from the beginning and end of the value
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--spaces Replaces 2 successive spaces by 1, except breaks
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--tags, --tags [TAGS] Removes tags. You can specify the tags to remove (separated by comma)
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HTTP
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--method [METHOD] HTTP Method
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--accept-http-error Accepts all status codes (like 404)
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--verbose, -v Show message of error
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--multiple, -m The output must contain all the selector targets
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`
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if (input.has('help')) {
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output.write(usage)
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process.exit(0)
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}
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if (!input.has('url')) {
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output.write('You must specify --url')
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output.write(usage)
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process.exit(1)
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}
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if (!input.has('selector')) {
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output.write('You must specify --selector')
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output.write(usage)
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process.exit(1)
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}
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const url = input.get('url')
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const selector = input.get('selector')
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const method = input.has('method') ? input.get('method') : 'GET'
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const acceptAllStatus = input.has('accept-http-error')
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const verbose = input.has('verbose') || input.has('v')
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const isMultiple = input.has('multiple') || input.has('m')
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let filtersToApply = {}
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for (let param in input.args) {
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if (filters.includes(param)) {
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let value = input.args[param]
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if (value !== true) {
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value = value.split(',')
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} else {
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value = null
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}
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filtersToApply[param] = value
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}
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}
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const options = {
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url: url,
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method: method,
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acceptAllStatus: acceptAllStatus,
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}
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const onSuccess = function(value) {
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if (isMultiple && value instanceof Array) {
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for (let item of value) {
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output.write(item)
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}
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} else {
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output.write(value)
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}
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}
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const onError = function(error) {
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output.write(error.name, 'error')
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if (verbose) {
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output.write(error.message, 'error')
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}
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process.exit(1)
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}
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scraper(options, selector, filtersToApply, onSuccess, onError, isMultiple)
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