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eefcc1bda4
curldown is this new file format for libcurl man pages. It is markdown inspired with differences: - Each file has a set of leading headers with meta-data - Supports a small subset of markdown - Uses .md file extensions for editors/IDE/GitHub to treat them nicely - Generates man pages very similar to the previous ones - Generates man pages that still convert nicely to HTML on the website - Detects and highlights mentions of curl symbols automatically (when their man page section is specified) tools: - cd2nroff: converts from curldown to nroff man page - nroff2cd: convert an (old) nroff man page to curldown - cdall: convert many nroff pages to curldown versions - cd2cd: verifies and updates a curldown to latest curldown This setup generates .3 versions of all the curldown versions at build time. CI: Since the documentation is now technically markdown in the eyes of many things, the CI runs many more tests and checks on this documentation, including proselint, link checkers and tests that make sure we capitalize the first letter after a period... Closes #12730
71 lines
1.2 KiB
Markdown
71 lines
1.2 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_SEEKDATA
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Section: 3
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Source: libcurl
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See-also:
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- CURLOPT_DEBUGFUNCTION (3)
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- CURLOPT_IOCTLFUNCTION (3)
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- CURLOPT_SEEKFUNCTION (3)
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- CURLOPT_STDERR (3)
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---
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# NAME
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CURLOPT_SEEKDATA - pointer passed to the seek callback
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SEEKDATA, void *pointer);
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~~~
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# DESCRIPTION
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Data *pointer* to pass to the seek callback function. If you use the
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CURLOPT_SEEKFUNCTION(3) option, this is the pointer you get as input.
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# DEFAULT
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If you do not set this, NULL is passed to the callback.
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# PROTOCOLS
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HTTP, FTP, SFTP
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# EXAMPLE
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~~~c
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#include <unistd.h> /* for lseek() */
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struct data {
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int our_fd;
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};
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static int seek_cb(void *clientp, curl_off_t offset, int origin)
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{
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struct data *d = (struct data *)clientp;
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lseek(d->our_fd, offset, origin);
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return CURL_SEEKFUNC_OK;
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}
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int main(void)
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{
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struct data seek_data;
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CURL *curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_SEEKFUNCTION, seek_cb);
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curl_easy_setopt(curl, CURLOPT_SEEKDATA, &seek_data);
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.18.0
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# RETURN VALUE
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