Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/libcurl/opts/CURLOPT_WRITEDATA.3 @ 17:dd9cdb856310

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Remove PKG-INFO from the because it is regenerated automatically for the sdist
author Franz Glasner <fzglas.hg@dom66.de>
date Thu, 18 Sep 2025 17:40:40 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 .\" **************************************************************************
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2 .\" * _ _ ____ _
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3 .\" * Project ___| | | | _ \| |
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4 .\" * / __| | | | |_) | |
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5 .\" * | (__| |_| | _ <| |___
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6 .\" * \___|\___/|_| \_\_____|
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7 .\" *
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8 .\" * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 .\" *
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10 .\" * This software is licensed as described in the file COPYING, which
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11 .\" * you should have received as part of this distribution. The terms
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12 .\" * are also available at https://curl.haxx.se/docs/copyright.html.
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13 .\" *
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14 .\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 .\" * copies of the Software, and permit persons to whom the Software is
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16 .\" * furnished to do so, under the terms of the COPYING file.
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17 .\" *
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18 .\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 .\" * KIND, either express or implied.
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20 .\" *
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21 .\" **************************************************************************
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22 .\"
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23 .TH CURLOPT_WRITEDATA 3 "16 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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24 .SH NAME
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25 CURLOPT_WRITEDATA \- custom pointer passed to the write callback
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26 .SH SYNOPSIS
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27 #include <curl/curl.h>
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28
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29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_WRITEDATA, void *pointer);
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30 .SH DESCRIPTION
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31 A data \fIpointer\fP to pass to the write callback. If you use the
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32 \fICURLOPT_WRITEFUNCTION(3)\fP option, this is the pointer you'll get in that
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33 callback's 4th argument. If you don't use a write callback, you must make
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34 \fIpointer\fP a 'FILE *' (cast to 'void *') as libcurl will pass this to
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35 \fIfwrite(3)\fP when writing data.
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36
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37 The internal \fICURLOPT_WRITEFUNCTION(3)\fP will write the data to the FILE *
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38 given with this option, or to stdout if this option hasn't been set.
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39
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40 If you're using libcurl as a win32 DLL, you \fBMUST\fP use a
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41 \fICURLOPT_WRITEFUNCTION(3)\fP if you set this option or you will experience
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42 crashes.
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43 .SH DEFAULT
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44 By default, this is a FILE * to stdout.
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45 .SH PROTOCOLS
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46 Used for all protocols.
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47 .SH EXAMPLE
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48 A common technique is to use the write callback to store the incoming data
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49 into a dynamically growing allocated buffer, and then this
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50 \fICURLOPT_WRITEDATA(3)\fP is used to point to a struct or the buffer to store
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51 data in. Like in the getinmemory example:
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52 https://curl.haxx.se/libcurl/c/getinmemory.html
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53 .SH AVAILABILITY
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54 Available in all libcurl versions. This option was formerly known as
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55 \fICURLOPT_FILE\fP, the name \fICURLOPT_WRITEDATA(3)\fP was introduced in
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56 7.9.7.
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57 .SH RETURN VALUE
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58 This will return CURLE_OK.
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59 .SH "SEE ALSO"
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60 .BR CURLOPT_WRITEFUNCTION "(3), " CURLOPT_READDATA "(3), "