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2df67e93c3
The API documentation for the MIME functions specify that the parts can be set twice, with the last call winning. While true, the user can set the parts n times for n > 2, reword to specify multiple API calls instead. Closes: #8860 Reviewed-by: Daniel Stenberg <daniel@haxx.se>
86 lines
3.3 KiB
Groff
86 lines
3.3 KiB
Groff
.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at https://curl.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" **************************************************************************
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.TH curl_mime_filedata 3 "22 August 2017" "libcurl 7.56.0" "libcurl Manual"
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.SH NAME
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curl_mime_filedata - set a mime part's body data from a file contents
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_mime_filedata(curl_mimepart *part,
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const char *filename);
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.fi
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.SH DESCRIPTION
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\fIcurl_mime_filedata(3)\fP sets a mime part's body content from the named
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file's contents. This is an alternative to \fIcurl_mime_data(3)\fP for setting
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data to a mime part.
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\fIpart\fP is the part's to assign contents to.
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\fIfilename\fP points to the null-terminated file's path name. The pointer can
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be NULL to detach the previous part contents settings. Filename storage can
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be safely be reused after this call.
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As a side effect, the part's remote file name is set to the base name of the
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given \fIfilename\fP if it is a valid named file. This can be undone or
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overridden by a subsequent call to \fIcurl_mime_filename(3)\fP.
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The contents of the file is read during the file transfer in a streaming
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manner to allow huge files to get transferred without using much memory. It
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therefore requires that the file is kept intact during the entire request.
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If the file size cannot be determined before actually reading it (such as for
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a device or named pipe), the whole mime structure containing the part
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will be transferred as chunks by HTTP and rejected by IMAP.
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Setting a part's contents multiple times is valid: only the value set by the
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last call is retained.
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.SH EXAMPLE
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.nf
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curl_mime *mime;
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curl_mimepart *part;
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/* create a mime handle */
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mime = curl_mime_init(easy);
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/* add a part */
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part = curl_mime_addpart(mime);
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/* send data from this file */
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curl_mime_filedata(part, "image.png");
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/* set name */
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curl_mime_name(part, "data");
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.fi
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.SH AVAILABILITY
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As long as at least one of HTTP, SMTP or IMAP is enabled. Added in 7.56.0.
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.SH RETURN VALUE
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CURLE_OK or a CURL error code upon failure. CURLE_READ_ERROR is only an
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indication that the file is not yet readable: it can be safely ignored at
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this time, but the file must be made readable before the pertaining
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easy handle is performed.
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.SH "SEE ALSO"
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.BR curl_mime_addpart "(3),"
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.BR curl_mime_data "(3),"
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.BR curl_mime_filename "(3),"
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.BR curl_mime_name "(3)"
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