Snap for 8564071 from f0df97945b4fdddd066170b120f192941b8d7fbf to mainline-os-statsd-releaseaml_sta_341710000aml_sta_341615000aml_sta_341511040aml_sta_341410000aml_sta_341311010aml_sta_341114000aml_sta_341111000aml_sta_341010020aml_sta_340912000aml_sta_340911000aml_sta_331910000aml_sta_331811000aml_sta_331711010aml_sta_331610000aml_sta_331511000aml_sta_331410000aml_sta_331311000aml_sta_331010010aml_sta_330910000aml_net_341111030android14-mainline-os-statsd-releaseandroid13-mainline-os-statsd-release

Change-Id: I5713aa596c36ea10726c60b0fc74716c6ab7cd06

1 files changed, 25 insertions, 0 deletions

diff --git a/util/featureWriterStream.js b/util/featureWriterStream.js
new file mode 100644
index 0000000..7f0e7b8
--- /dev/null
+++ b/util/featureWriterStream.js
@@ -0,0 +1,25 @@
+const fs = require('fs')
+
+class FeatureWriterStream {
+  constructor (file) {
+    this.file = file
+    this.stream = fs.createWriteStream(file)
+    this.stream.write('{"type":"FeatureCollection","features":[')
+    this.numFeatures = 0
+  }
+
+  add (stringifiedFeature) {
+    if (this.numFeatures > 0) {
+      this.stream.write(',')
+    }
+    this.stream.write(stringifiedFeature)
+    this.numFeatures++
+  }
+
+  end (cb) {
+    console.log(`Closing out file ${this.file}`)
+    this.stream.end(']}', cb)
+  }
+}
+
+module.exports = FeatureWriterStream