TanTan
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37 lines
791 B
Plaintext
37 lines
791 B
Plaintext
'use strict';
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var stream = require('stream');
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var util = require('util');
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var replace = require('./replace');
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var jsonExtRe = /\.json$/;
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module.exports = function(rootEnv) {
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rootEnv = rootEnv || process.env;
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return function (file, trOpts) {
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if (jsonExtRe.test(file)) {
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return stream.PassThrough();
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}
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var envs = trOpts ? [rootEnv, trOpts] : [rootEnv];
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return new LooseEnvify(envs);
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};
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};
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function LooseEnvify(envs) {
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stream.Transform.call(this);
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this._data = '';
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this._envs = envs;
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}
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util.inherits(LooseEnvify, stream.Transform);
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LooseEnvify.prototype._transform = function(buf, enc, cb) {
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this._data += buf;
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cb();
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};
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LooseEnvify.prototype._flush = function(cb) {
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var replaced = replace(this._data, this._envs);
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this.push(replaced);
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cb();
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};
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