https://github.com/toddself/image-validator-stream

https://github.com/toddself/image-validator-stream

Last synced: 12 months ago
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• Host: GitHub
• URL: https://github.com/toddself/image-validator-stream
• Owner: toddself
• License: mit
• Created: 2014-04-10T21:33:12.000Z (about 12 years ago)
• Default Branch: master
• Last Pushed: 2018-08-14T20:18:10.000Z (almost 8 years ago)
• Last Synced: 2025-04-12T16:14:08.563Z (about 1 year ago)
• Language: JavaScript
• Size: 41 KB
• Stars: 5
• Watchers: 3
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# image-validator-stream

[![build status](https://secure.travis-ci.org/toddself/image-validator-stream.png)](http://travis-ci.org/toddself/image-validator-stream)

Provides a transform stream to inspect the incoming header of an image to detemine if it's a valid image format.

Currently supports:

* jpg

* png

* gif (87a/89a)

## Example

```js

const fs = require('fs')

const path = require('path')

const ImageValidatorStream = require('image-validator-stream')

function validateThenCopy (src, dst, cb) {

  const ext = path.extname(src)

  const ivs = new ImageValidatorStream({ext: ext})

  ivs.on('error', function (err) {

    err.file = dst

    cb(err)

  })

  const out = fs.createWriteStream(dst).on('end', function () {

    cb()

  })

  fs.createReadStream(src).pipe(ivs).pipe(out)

}

validateThenCopy(path.join(__dirname, 'junk.jpg'), 'awesome.jpg', function (err) {

  if (err) {

    fs.unlink(err.file, function (err) {

      if (err) {

        console.log(err)

      }

      console.log('oh noes!')

    })

  } else {

    console.log('awyiss')

  }

})

```

[full example](example/abort-on-bad.js)

## Installation

`npm install image-validator-stream`

## License

Copyright © 2014 Todd Kennedy, Licensed under the [MIT License](LICENSE)