forked from MapComplete/MapComplete
53 lines
1.5 KiB
TypeScript
53 lines
1.5 KiB
TypeScript
import * as fs from "fs"
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import { TagUtils } from "../Logic/Tags/TagUtils"
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import { writeFileSync } from "fs"
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import { TagsFilter } from "../Logic/Tags/TagsFilter"
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function main(args) {
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if (args.length < 2) {
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console.log(
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"Given a single geojson file and a filter specification, will print all the entries to std-out which pass the property"
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)
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console.log("USAGE: perProperty `file.geojson` `key=value` [outputfile]")
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return
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}
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const path = args[0]
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const spec = args[1]
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const output = args[2]
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const data = JSON.parse(fs.readFileSync(path, { encoding: "utf8" }))
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let filter: TagsFilter
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try {
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filter = TagUtils.Tag(JSON.parse(spec))
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} catch (e) {
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filter = TagUtils.Tag(spec)
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}
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const features = data.features.filter((f) => filter.matchesProperties(f.properties))
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if (features.length === 0) {
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console.log("Warning: no features matched the filter. Exiting now")
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return
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}
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const collection = {
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type: "FeatureCollection",
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features,
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}
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const stringified = JSON.stringify(collection, null, " ")
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if (output === undefined) {
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console.log(stringified)
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} else {
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console.log(
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"Filtered " +
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path +
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": kept " +
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features.length +
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" out of " +
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data.features.length +
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" objects"
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)
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writeFileSync(output, stringified)
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}
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}
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main(process.argv.slice(2))
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