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
76 lines
1.6 KiB
Markdown
76 lines
1.6 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: curl_slist_append
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Section: 3
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Source: libcurl
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See-also:
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- curl_slist_free_all (3)
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---
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# NAME
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curl_slist_append - add a string to an slist
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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struct curl_slist *curl_slist_append(struct curl_slist *list,
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const char *string);
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~~~
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# DESCRIPTION
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curl_slist_append(3) appends a string to a linked list of strings. The
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existing **list** should be passed as the first argument and the new list is
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returned from this function. Pass in NULL in the **list** argument to create
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a new list. The specified **string** has been appended when this function
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returns. curl_slist_append(3) copies the string.
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The list should be freed again (after usage) with
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curl_slist_free_all(3).
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *handle;
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struct curl_slist *slist = NULL;
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struct curl_slist *temp = NULL;
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slist = curl_slist_append(slist, "pragma:");
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if(!slist)
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return -1;
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temp = curl_slist_append(slist, "Accept:");
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if(!temp) {
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curl_slist_free_all(slist);
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return -1;
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}
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slist = temp;
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curl_easy_setopt(handle, CURLOPT_HTTPHEADER, slist);
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curl_easy_perform(handle);
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curl_slist_free_all(slist); /* free the list again */
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}
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~~~
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# AVAILABILITY
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Always
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# RETURN VALUE
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A null pointer is returned if anything went wrong, otherwise the new list
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pointer is returned. To avoid overwriting an existing non-empty list on
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failure, the new list should be returned to a temporary variable which can
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be tested for NULL before updating the original list pointer.
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