76 lines
1.6 KiB
Markdown
76 lines
1.6 KiB
Markdown
match-stream [](https://travis-ci.org/EvanOxfeld/match-stream)
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============
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Supply a function to handle pattern matches within a NodeJS stream.
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## Installation
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```bash
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$ npm install match-stream
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```
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## Quick Examples
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### End stream on match
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```javascript
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var MatchStream = require('match-stream');
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var streamBuffers = require("stream-buffers");
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var ms = new MatchStream({ pattern: 'World'}, function (buf, matched, extra) {
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if (!matched) {
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return this.push(buf);
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}
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this.push(buf);
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return this.push(null); //signal end of data
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});
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var sourceStream = new streamBuffers.ReadableStreamBuffer();
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sourceStream.put("Hello World");
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var writableStream = new streamBuffers.WritableStreamBuffer();
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sourceStream
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.pipe(ms)
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.pipe(writableStream)
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.once('close', function () {
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var str = writableStream.getContentsAsString('utf8');
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console.log('Piped data before pattern occurs:', "'" + str + "'");
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sourceStream.destroy();
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});
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//Output
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//Piped data before pattern occurs: 'Hello '
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```
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### Split stream
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```javascript
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var MatchStream = require('match-stream');
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var fs = require('fs');
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var line = "";
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var loremLines = [];
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var ms = new MatchStream({ pattern: '.', consume: true}, function (buf, matched, extra) {
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line += buf.toString();
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if (matched) {
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loremLines.push(line.trim());
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line = "";
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}
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});
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fs.createReadStream('lorem.txt')
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.pipe(ms)
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.once('finish', function() {
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console.log(loremLines);
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});
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```
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## License
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MIT
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## Acknowledgements
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Special thanks to @wanderview for assisting with the API.
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