https://github.com/scalajs-io/csvtojson
A tool concentrating on converting csv data to JSON with customised parser supporting
https://github.com/scalajs-io/csvtojson
csvtojson node nodejs npm npm-package npmjs scala scalajs
Last synced: 4 months ago
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A tool concentrating on converting csv data to JSON with customised parser supporting
- Host: GitHub
- URL: https://github.com/scalajs-io/csvtojson
- Owner: scalajs-io
- License: apache-2.0
- Created: 2017-02-09T00:36:58.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2019-06-17T23:08:04.000Z (about 6 years ago)
- Last Synced: 2025-01-17T22:42:35.844Z (5 months ago)
- Topics: csvtojson, node, nodejs, npm, npm-package, npmjs, scala, scalajs
- Language: Scala
- Size: 17.6 KB
- Stars: 1
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
csvtojson API for Scala.js
================================
[csvtojson](https://www.npmjs.com/package/csvtojson) - A tool concentrating on converting csv data to JSON with customised parser supporting
#### Description
Nodejs csv to json converter. Fully featured:
* Pipe in / Pipe out
* Use as Command Line tool or a Node.js lib
* Parse CSV to JSON or CSV column arrays
* Support all types of CSV
* Non-blocking parsing / multi core support
* Extremely fast: 4 - 6 times faster than other csv parsers on node.js
* Streaming data / low memory usage on large CSV data source
#### Build Dependencies
* [SBT v1.2.x](http://www.scala-sbt.org/download.html)
#### Build/publish the SDK locally
```bash
$ sbt clean publish-local
```
#### Running the tests
Before running the tests the first time, you must ensure the npm packages are installed:
```bash
$ npm install
```
Then you can run the tests:
```bash
$ sbt test
```
#### Examples
##### Parse CSV from a string source
```scala
import io.scalajs.npm.csvtojson._
import io.scalajs.util.JSONHelper._
val csvStr =
"""1,2,3
|4,5,6
|7,8,9""".stripMargin
CsvToJson(new ParsingOptions(noheader = true))
.fromString(csvStr)
.onCsv { csvRow =>
// this func will be called 3 times
println(csvRow.toJson) // => [1,2,3] , [4,5,6] , [7,8,9]
}
.onDone { () =>
// parsing finished
}
```
##### Parse CSV from a file
```scala
import io.scalajs.npm.csvtojson._
import io.scalajs.util.JSONHelper._
CsvToJson()
.fromFile("./src/test/resources/data.csv")
.onJson { jsonObj =>
// combine csv header row and csv line to a json object
// jsonObj.a ==> 1 or 4
println(s"json: ${jsonObj.toJson}") // => {"a":"1","b":"2","c":"3"} , {"a":"4","b":"5","c":"6"}
}
.onDone { () =>
// parsing finished
}
```
The CSV file:
```text
a,b,c
1,2,3
4,5,6
```
#### Artifacts and Resolvers
To add the `CsvToJson` binding to your project, add the following to your build.sbt:
```sbt
libraryDependencies += "io.scalajs.npm" %%% "csvtojson" % "0.5.0"
```
Optionally, you may add the Sonatype Repository resolver:
```sbt
resolvers += Resolver.sonatypeRepo("releases")