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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| 'use strict' | ||
|
|
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| var uuid = require('node-uuid') | ||
| , CombinedStream = require('combined-stream') | ||
| , isstream = require('isstream') | ||
|
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|
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| function Multipart (request) { | ||
| this.request = request | ||
| this.boundary = uuid() | ||
| this.chunked = false | ||
| this.body = null | ||
| } | ||
|
|
||
| Multipart.prototype.isChunked = function (options) { | ||
| var self = this | ||
| , chunked = false | ||
| , parts = options.data || options | ||
|
|
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| if (!parts.forEach) { | ||
| throw new Error('Argument error, options.multipart.') | ||
| } | ||
|
|
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| if (options.chunked !== undefined) { | ||
| chunked = options.chunked | ||
| } | ||
|
|
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| if (self.request.getHeader('transfer-encoding') === 'chunked') { | ||
| chunked = true | ||
| } | ||
|
|
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| if (!chunked) { | ||
| parts.forEach(function (part) { | ||
| if(typeof part.body === 'undefined') { | ||
| throw new Error('Body attribute missing in multipart.') | ||
| } | ||
| if (isstream(part.body)) { | ||
| chunked = true | ||
| } | ||
| }) | ||
| } | ||
|
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| return chunked | ||
| } | ||
|
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| Multipart.prototype.setHeaders = function (chunked) { | ||
| var self = this | ||
|
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| if (chunked && !self.request.hasHeader('transfer-encoding')) { | ||
| self.request.setHeader('transfer-encoding', 'chunked') | ||
| } | ||
|
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| var header = self.request.getHeader('content-type') | ||
|
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| if (!header || header.indexOf('multipart') === -1) { | ||
| self.request.setHeader('content-type', 'multipart/related; boundary=' + self.boundary) | ||
| } else { | ||
| if (header.indexOf('boundary') !== -1) { | ||
| self.boundary = header.replace(/.*boundary=([^\s;])+.*/, '$1') | ||
| } else { | ||
| self.request.setHeader('content-type', header + '; boundary=' + self.boundary) | ||
| } | ||
| } | ||
| } | ||
|
|
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| Multipart.prototype.build = function (parts, chunked) { | ||
| var self = this | ||
| var body = chunked ? new CombinedStream() : [] | ||
|
|
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| function add (part) { | ||
| return chunked ? body.append(part) : body.push(new Buffer(part)) | ||
| } | ||
|
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| if (self.request.preambleCRLF) { | ||
| add('\r\n') | ||
| } | ||
|
|
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| parts.forEach(function (part) { | ||
| var preamble = '--' + self.boundary + '\r\n' | ||
| Object.keys(part).forEach(function (key) { | ||
| if (key === 'body') { return } | ||
| preamble += key + ': ' + part[key] + '\r\n' | ||
| }) | ||
| preamble += '\r\n' | ||
| add(preamble) | ||
| add(part.body) | ||
| add('\r\n') | ||
| }) | ||
| add('--' + self.boundary + '--') | ||
|
|
||
| if (self.request.postambleCRLF) { | ||
| add('\r\n') | ||
| } | ||
|
|
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| return body | ||
| } | ||
|
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| Multipart.prototype.onRequest = function (options) { | ||
| var self = this | ||
|
|
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| var chunked = self.isChunked(options) | ||
| , parts = options.data || options | ||
|
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| self.setHeaders(chunked) | ||
| self.chunked = chunked | ||
| self.body = self.build(parts, chunked) | ||
| } | ||
|
|
||
| exports.Multipart = Multipart |
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