How to use guessContentType method of com.github.kittinunf.fuel.core.InlineDataPart class

Best Fuel code snippet using com.github.kittinunf.fuel.core.InlineDataPart.guessContentType

DataPart.kt

Source:DataPart.kt

1package com.github.kittinunf.fuel.core2import com.github.kittinunf.fuel.core.BlobDataPart.Companion.guessContentType3import com.github.kittinunf.fuel.core.FileDataPart.Companion.guessContentType4import java.io.File5import java.io.InputStream6import java.net.URLConnection7/**8 * Wrapper type that generates [DataPart] from a [Request]9 */10typealias LazyDataPart = (request: Request) -> DataPart11/**12 * Generic DataPart class13 *14 * @note based on https://tools.ietf.org/html/rfc757815 *16 *  4.2.  Content-Disposition Header Field for Each Part17 *18 *      Each part MUST contain a Content-Disposition header field [RFC2183]19 *      where the disposition type is "form-data".  The Content-Disposition20 *      header field MUST also contain an additional parameter of "name"; the21 *      value of the "name" parameter is the original field name from the22 *      form (possibly encoded; see Section 5.1).  For example, a part might23 *      contain a header field such as the following, with the body of the24 *      part containing the form data of the "user" field:25 *26 *          Content-Disposition: form-data; name="user"27 *28 *   4.3.  Multiple Files for One Form Field29 *30 *      The form data for a form field might include multiple files.31 *32 *      [RFC2388] suggested that multiple files for a single form field be33 *      transmitted using a nested "multipart/mixed" part.  This usage is34 *      deprecated.35 *36 *  4.4.  Content-Type Header Field for Each Part37 *38 *      Each part MAY have an (optional) "Content-Type" header field, which39 *      defaults to "text/plain".  If the contents of a file are to be sent,40 *      the file data SHOULD be labeled with an appropriate media type, if41 *      known, or "application/octet-stream".42 */43sealed class DataPart {44    /**45     * Get the input stream that yields the contents of this [DataPart]46     * @return [InputStream] the input stream47     */48    abstract fun inputStream(): InputStream49    /**50     * The Content-Disposition header value51     */52    abstract val contentDisposition: String53    /**54     * The Content-Type header value55     */56    abstract val contentType: String57    /**58     * The content length or -1 or null if unknown59     */60    abstract val contentLength: Long?61    companion object {62        internal const val GENERIC_BYTE_CONTENT = "application/octet-stream"63        internal const val GENERIC_CONTENT = "text/plain"64    }65}66/**67 * Data part that has inline content68 *69 * @example Add metadata with a content-type70 *71 *   val metadata = "{\"description\": \"test document from Kotlin \"}72 *   request.add { InlineDataPart(metadata, contentType = "application/json", name = "metadata") }73 *74 *   // ...boundary75 *   // Content-Disposition: "form-data; name=metadata"76 *   // Content-Type: "application/json"77 *   //78 *   // {"description": "test document from Kotlin"}79 *80 * @param content [String] the inline content81 * @param name [String] the field name82 * @param filename [String] the remote file name, or null83 * @param contentType [String] the content-type of the inline content; defaults to text/plain; charset=utf-884 * @param contentDisposition [String] defaults to form-data with name and filename set, unless filename is null85 */86data class InlineDataPart(87    val content: String,88    val name: String,89    val filename: String? = null,90    override val contentType: String = "$GENERIC_CONTENT; charset=utf-8",91    override val contentDisposition: String = "form-data; name=\"$name\"${if (filename != null) "; filename=\"$filename\"" else "" }"92) : DataPart() {93    override fun inputStream() = content.byteInputStream()94    override val contentLength get() = content.toByteArray(Charsets.UTF_8).size.toLong()95}96/**97 *  DataPart that represents a file98 *99 *  @example Add a file as a DataPart100 *101 *    val file = File("foo.json")102 *    request.add { FileDataPart(file, name = "field-name", filename = "remote-file-name.json") }103 *104 *    // ...boundary105 *    // Content-Disposition: "form-data; name=metadata; filename=remote-file-name.json"106 *    // Content-Type: "application/json"107 *    //108 *    // <file-contents foo.json>109 *110 *  @example Adding multiple files under the same field name, formerly using multipart/mixed:111 *112 *    val file1 = File("foobar.json")113 *    val file2 = File("baz.json")114 *    request.add(FileDataPart(file1, name = "field-name"), FileDataPart(file2, name = "field-name"))115 *116 *    // ...boundary117 *    // Content-Disposition: "form-data; name=field-name; filename=foobar.json"118 *    // Content-Type: "application/json"119 *    //120 *    // <file-contents foobar.json>121 *    //122 *    //123 *    // ...boundary124 *    // Content-Disposition: "form-data; name=field-name; filename=baz.json"125 *    // Content-Type: "application/json"126 *    //127 *    // <file-contents baz.json>128 *129 *  @example Adding multiple files as an array to a single field name:130 *131 *    val file1 = File("foobar.json")132 *    val file2 = File("baz.json")133 *    request.add(FileDataPart(file1, name = "field-name[]"), FileDataPart(file2, name = "field-name[]"))134 *135 *    // ...boundary136 *    // Content-Disposition: "form-data; name=field-name[]; filename=foobar.json"137 *    // Content-Type: "application/json"138 *    //139 *    // <file-contents foobar.json>140 *    //141 *    //142 *    // ...boundary143 *    // Content-Disposition: "form-data; name=field-name[]; filename=baz.json"144 *    // Content-Type: "application/json"145 *    //146 *    // <file-contents baz.json>147 *148 *  @param file [File] the source file149 *  @param name [String] the field name, defaults to the file name without extension150 *  @param filename [String] the remote file name, or null151 *  @param contentType [String] the content type of the file contents; defaults to a guess using [guessContentType]152 *  @param contentDisposition [String] defaults to form-data with name and filename set, unless filename is null153 */154data class FileDataPart(155    val file: File,156    val name: String = file.nameWithoutExtension,157    val filename: String? = file.name,158    override val contentType: String = FileDataPart.guessContentType(file),159    // For form data that represents the content of a file, a name for the160    //   file SHOULD be supplied as well, by using a "filename" parameter of161    //   the Content-Disposition header field.  The file name isn't mandatory162    //   for cases where the file name isn't available or is meaningless or163    //   private; this might result, for example, when selection or drag-and-164    //   drop is used or when the form data content is streamed directly from165    //   a device.166    override val contentDisposition: String = "form-data; name=\"$name\"${if (filename != null) "; filename=\"$filename\"" else "" }"167) : DataPart() {168    override fun inputStream() = file.inputStream()169    override val contentLength get() = file.length()170    companion object {171        fun guessContentType(file: File) = try {172            URLConnection.guessContentTypeFromName(file.name)173                ?: BlobDataPart.guessContentType(file.inputStream())174        } catch (ex: NoClassDefFoundError) {175            // The MimetypesFileTypeMap class doesn't exists on old Android devices.176            GENERIC_BYTE_CONTENT177        }178        /**179         * Create a FileDataPart from a [path]180         *181         * @param path [File] the absolute path to the file182         * @param remoteFileName [String] the filename parameter for the DataPart, set to null to exclude, empty to use actual filename183         * @param name [String] the name for the field, uses [filename] without the extension by default184         * @param contentType [String] the Content-Type for the DataPart, set to null to [guessContentType]185         *186         * @return [FileDataPart] the DataPart187         */188        fun from(path: String, remoteFileName: String? = "", name: String? = null, contentType: String? = null): DataPart {189            val file = File(path)190            return FileDataPart(191                file = file,192                name = name ?: file.nameWithoutExtension,193                filename = remoteFileName?.let { if (it.isBlank()) file.name else it },194                contentType = contentType ?: guessContentType(file)195            )196        }197        /**198         * Create a FileDataPart from a [directory] and [filename]199         *200         * @param directory [File] the directory201         * @param filename [String] the filename relative to the [directory]202         * @param name [String] the name for the field, uses [filename] without the extension by default203         * @param remoteFileName [String] the filename parameter for the DataPart, set to null to exclude, empty to use [filename]204         * @param contentType [String] the Content-Type for the DataPart, set to null to [guessContentType]205         *206         * @return [FileDataPart] the DataPart207         */208        fun from(directory: String, filename: String, name: String? = null, remoteFileName: String? = "", contentType: String? = null): DataPart =209            // This happens if `from` is called with the path and the "remoteFileName" but without using named arguments210            if (File(directory).isFile && remoteFileName.isNullOrBlank())211                from(path = directory, remoteFileName = filename, name = name, contentType = contentType)212            else213                from(directory = File(directory), filename = filename, name = name, remoteFileName = remoteFileName, contentType = contentType)214        /**215         * Create a FileDataPart from a [directory] and [filename]216         *217         * @param directory [File] the directory218         * @param filename [String] the filename relative to the [directory]219         * @param name [String] the name for the field, uses [filename] without the extension by default220         * @param remoteFileName [String] the filename parameter for the DataPart, set to null to exclude, empty to use [filename]221         * @param contentType [String] the Content-Type for the DataPart, set to null to [guessContentType]222         *223         * @return [FileDataPart] the DataPart224         */225        fun from(directory: File?, filename: String, name: String? = null, remoteFileName: String? = "", contentType: String? = null): DataPart {226            val file = File(directory, filename)227            return FileDataPart(228                file = file,229                name = name ?: file.nameWithoutExtension,230                filename = remoteFileName?.let { if (it.isBlank()) filename else it },231                contentType = contentType ?: guessContentType(file)232            )233        }234    }235}236/**237 * DataPart from a generic InputStream238 *239 * @note not setting the content-length or setting it to -1L, results in the default Client using chunked encoding240 *   with an arbitrary buffer size.241 *242 * @param inputStream [File] the source stream243 * @param name [String] the field name, required244 * @param filename [String] the remote file name, or null245 * @param contentLength [Long] the length in bytes, or -1 or null if it's not knows at creation time.246 * @param contentType [String] the content type of the file contents; defaults to a guess using [guessContentType]247 * @param contentDisposition [String] defaults to form-data with name and filename set, unless filename is null248 */249data class BlobDataPart(250    val inputStream: InputStream,251    val name: String,252    val filename: String? = null,253    override val contentLength: Long? = null,254    override val contentType: String = BlobDataPart.guessContentType(inputStream),255    override val contentDisposition: String = "form-data; name=\"$name\"${if (filename != null) "; filename=\"$filename\"" else "" }"256) : DataPart() {257    override fun inputStream() = inputStream258    companion object {259        fun guessContentType(stream: InputStream) = try {260            URLConnection.guessContentTypeFromStream(stream)261            ?: GENERIC_BYTE_CONTENT262        } catch (ex: NoClassDefFoundError) {263            // The MimetypesFileTypeMap class doesn't exists on old Android devices.264            GENERIC_BYTE_CONTENT265        }266    }267}...

guessContentType

Using AI Code Generation

1val contentType = com.github.kittinunf.fuel.core.InlineDataPart.guessContentType(file)2val (_, _, result) = com.github.kittinunf.fuel.core.Fuel.upload("/path/to/endpoint").file(file, contentType)3val (data, error) = result.component1()4val (request, response, _) = data.component1()5val (url, statusCode, headers, _) = response.component1()6val (exception, response) = error.component1()7val (request, response, exception) = exception.component1()8val (url, statusCode, headers, _) = response.component1()9val (data, _) = response.component2()10val (request, response, _) = data.component1()11val (url, statusCode, headers, _) = response.component1()12val (_, data) = response.component2()13val (method, url, headers, _, _) = request.component1()14val (contentType, _) = headers.component1()

guessContentType

Using AI Code Generation

1val file = File("path/to/file")2val contentType = com.github.kittinunf.fuel.core.InlineDataPart(file).guessContentType()3val file = File("path/to/file")4val contentType = com.github.kittinunf.fuel.core.InlineDataPart(file).guessContentType()5val file = File("path/to/file")6val contentType = com.github.kittinunf.fuel.core.InlineDataPart(file).guessContentType()7val file = File("path/to/file")8val contentType = com.github.kittinunf.fuel.core.InlineDataPart(file).guessContentType()9val file = File("path/to/file")10val contentType = com.github.kittinunf.fuel.core.InlineDataPart(file).guessContentType()11val file = File("path/to/file")12val contentType = com.github.kittinunf.fuel.core.InlineDataPart(file).guessContentType()13val file = File("path/to/file")14val contentType = com.github.kittinunf.fuel.core.InlineDataPart(file).guessContentType()15val file = File("path/to/file")16val contentType = com.github.kittinunf.fuel.core.InlineDataPart(file).guessContentType()

guessContentType

Using AI Code Generation

1val contentType = InlineDataPart(ByteArray(0), "name").guessContentType()2val contentType = InputStreamPart(ByteArray(0).inputStream(), "name").guessContentType()3val contentType = FileDataPart(File(""), "name").guessContentType()4val contentType = FileInputPart(File("").inputStream(), "name").guessContentType()5val contentType = FileInputPart(File("").inputStream(), "name").guessContentType()6val contentType = FileInputPart(File("").inputStream(), "name").guessContentType()7val contentType = FileInputPart(File("").inputStream(), "name").guessContentType()8val contentType = FileInputPart(File("").inputStream(), "name").guessContentType()9val contentType = FileInputPart(File("").inputStream(), "name").guessContentType()10val contentType = FileInputPart(File("").inputStream(), "name").guessContentType()11val contentType = FileInputPart(File("").inputStream(), "name").guessContentType()

guessContentType

Using AI Code Generation

1val extension = MimeTypeMap.getFileExtensionFromUrl(url)2val mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension)3val dataPart = InlineDataPart(url, mimeType, name)4val dataPart = FileDataPart(File(path), name)5val dataPart = FileDataPart(File(path), name, "text/plain")6val dataPart = FileDataPart(File(path), name, "text/plain", "UTF-8")7val dataPart = FileDataPart(File(path), name, "text/plain", "UTF-8", "filename.txt")8val dataPart = FileDataPart(File(path), name, "text/plain", "UTF-8", "filename.txt", "inline")9val dataPart = FileDataPart(File(path), name, "text/plain", "UTF-8", "filename.txt", "inline", "attachmentId")10val dataPart = FileDataPart(File(path), name, "text/plain", "UTF-8", "filename.txt", "inline", "attachmentId", "attachmentId")11val dataPart = FileDataPart(File(path), name, "text/plain", "UTF-8", "filename.txt", "inline", "attachmentId", "attachmentId", mapOf("key" to "value"))12val dataPart = FileDataPart(File(path), name, "text/plain", "UTF-8", "filename.txt", "inline", "attachmentId", "attachmentId", mapOf("key" to "value"), "customContentId")13val dataPart = FileDataPart(File(path), name, "text/plain", "UTF-8", "filename.txt", "inline", "attachmentId", "attachmentId", mapOf("key" to "value"), "customContentId", "customDisposition")14val dataPart = FileDataPart(File(path), name, "text/plain", "UTF-8", "filename.txt", "inline

guessContentType

Using AI Code Generation

1val file = File("somefile.txt")2val dataPart = InlineDataPart(file.readBytes(), file.name, file.guessContentType())3val file = File("somefile.txt")4val dataPart = InlineDataPart(file.readBytes(), file.name, file.guessContentType())5val file = File("somefile.txt")6val dataPart = InlineDataPart(file.readBytes(), file.name, file.guessContentType())7val file = File("somefile.txt")8val dataPart = InlineDataPart(file.readBytes(), file.name, file.guessContentType())9val file = File("somefile.txt")10val dataPart = InlineDataPart(file.readBytes(), file.name, file.guessContentType())11val file = File("somefile.txt")12val dataPart = InlineDataPart(file.readBytes(), file.name, file.guessContentType())13val file = File("somefile.txt")14val dataPart = InlineDataPart(file.readBytes(), file.name, file.guessContentType())15val file = File("somefile.txt")16val dataPart = InlineDataPart(file.readBytes(), file.name, file.guessContentType())

guessContentType

Using AI Code Generation

1            val contentType = com.github.kittinunf.fuel.core.InlineDataPart(file).guessContentType()2            val filePart = FileDataPart(file, name = "file", contentType = contentType)3            Fuel.upload("/upload")4                    .source { request, url ->5                        request.dataParts(listOf(filePart))6                    }7                    .responseObject { request, response, result ->8                        println(request)9                        println(response)10                        println(result)11                    }12        }13    }14}15Fuel.upload("/upload")16        .source { request, url ->17            request.dataParts(listOf(FileDataPart(file, name = "file")))18        }19        .responseObject { request, response, result ->20            println(request)21            println(response)22            println(result)23        }24Fuel.upload("/upload")25        .source { request, url ->26            val files = listOf(27                FileDataPart(file1, name = "file1"),28                FileDataPart(file2, name = "file2")29            request.dataParts(files)30        }31        .responseObject { request, response

guessContentType

Using AI Code Generation

1val filePart = InlineDataPart(file, "file", contentType)2val (request, response, result) = Fuel.upload("/upload").source { request, url ->3request.body = listOf(filePart)4}5}6}7val filePart = InlineDataPart(file, "file", contentType)8val (request, response, result) = Fuel.upload("/upload").source { request, url ->9request.body = listOf(filePart)10}11}

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