51 lines
1.0 KiB
JavaScript
51 lines
1.0 KiB
JavaScript
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var through = require('through2');
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var Stream = require('stream');
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// Consts
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const PLUGIN_NAME = 'gulp-stream';
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function gulpStream() {
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var stream = through.obj(function(file, enc, callback) {
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// keep null files as-is
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if (file.isNull()) {
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this.push(file);
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return callback();
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}
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// keep stream files as-is
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if (file.isStream()) {
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this.push(file);
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return callback();
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}
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// transform buffer files into buffers
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if (file.isBuffer()) {
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var cstream = Readable(file.contents);
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cstream.on('error', this.emit.bind(this, 'error'));
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file.contents = cstream;
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this.push(file);
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return callback();
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}
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});
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return stream;
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};
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function Readable(buffer){
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var readable = new Stream.Readable();
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var idx = 0;
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readable._read = function(size) {
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var chunk = buffer.slice(0, size);
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buffer = buffer.slice(size);
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var finished = (chunk.length == 0 && buffer.length == 0);
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this.push(finished ? null : chunk);
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};
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return readable;
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}
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module.exports = gulpStream;
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