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Merge pull request #16 from thefuntasty/feature/uploading-using-streams
Multipart requests using streams
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| // | ||
| // MultipartBodyPart.swift | ||
| // FTAPIKit | ||
| // | ||
| // Created by Matěj Kašpar Jirásek on 10/03/2019. | ||
| // Copyright © 2019 FUNTASTY Digital s.r.o. All rights reserved. | ||
| // | ||
|
|
||
| import struct Foundation.Data | ||
| import struct Foundation.URL | ||
| import class Foundation.InputStream | ||
|
|
||
| /// Structure representing part in `multipart/form-data` request. | ||
| /// These parts must have valid headers according | ||
| /// to [RFC-7578](https://tools.ietf.org/html/rfc7578). | ||
| /// Everything passed to it is converted to `InputStream` | ||
| /// in order to limit memory usage when sending files to a server. | ||
| public struct MultipartBodyPart: Hashable { | ||
| let headers: [String: String] | ||
| let inputStream: InputStream | ||
|
|
||
| /// Creates a new instance with custom headers and any input stream. | ||
| /// | ||
| /// - Parameters: | ||
| /// - headers: HTTP headers specific for the part, these are not validated locally and must be correct according to [RFC-7578](https://tools.ietf.org/html/rfc7578). | ||
| /// - inputStream: Any byte stream. | ||
| public init(headers: [String: String], inputStream: InputStream) { | ||
| self.headers = headers | ||
| self.inputStream = inputStream | ||
| } | ||
|
|
||
| /// Creates a new instance from key-value or HTTP parameter. | ||
| /// | ||
| /// - Parameters: | ||
| /// - name: Name of the parameter used in `Content-Disposition` header. | ||
| /// - value: String value of the parameter set as a body. | ||
| public init(name: String, value: String) { | ||
| let headers = [ | ||
| "Content-Disposition": "form-data; name=\(name)" | ||
| ] | ||
| self.init(headers: headers, data: Data(value.utf8)) | ||
| } | ||
|
|
||
| /// Creates a new instance with custom headers and data as body. | ||
| /// | ||
| /// - Parameters: | ||
| /// - headers: HTTP headers specific for the part, these are not validated locally and must be correct according to [RFC-7578](https://tools.ietf.org/html/rfc7578). | ||
| /// - data: Bytes sent as a part body. | ||
| public init(headers: [String: String], data: Data) { | ||
| self.headers = headers | ||
| self.inputStream = InputStream(data: data) | ||
| } | ||
|
|
||
| /// Creates a new instance with file URL used to be converted to body. | ||
| /// | ||
| /// - Parameters: | ||
| /// - name: Name of the parameter used in `Content-Disposition` header. | ||
| /// - url: URL to a local file. | ||
| /// - Throws: `APIError.multipartStreamCannotBeOpened` if stream was not created from the file. | ||
| public init(name: String, url: URL) throws { | ||
| guard let inputStream = InputStream(url: url) else { | ||
| throw APIError.multipartStreamCannotBeOpened | ||
| } | ||
| self.headers = [ | ||
| "Content-Type": url.mimeType, | ||
| "Content-Disposition": "form-data; name=\(name); filename=\"\(url.lastPathComponent)\"" | ||
| ] | ||
| self.inputStream = inputStream | ||
| } | ||
| } |
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