Return to curl_slist_append.3 CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / curl / docs / libcurl

Annotation of embedaddon/curl/docs/libcurl/curl_slist_append.3, revision 1.1

1.1     ! misho       1: .\" **************************************************************************
        !             2: .\" *                                  _   _ ____  _
        !             3: .\" *  Project                     ___| | | |  _ \| |
        !             4: .\" *                             / __| | | | |_) | |
        !             5: .\" *                            | (__| |_| |  _ <| |___
        !             6: .\" *                             \___|\___/|_| \_\_____|
        !             7: .\" *
        !             8: .\" * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
        !             9: .\" *
        !            10: .\" * This software is licensed as described in the file COPYING, which
        !            11: .\" * you should have received as part of this distribution. The terms
        !            12: .\" * are also available at https://curl.haxx.se/docs/copyright.html.
        !            13: .\" *
        !            14: .\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
        !            15: .\" * copies of the Software, and permit persons to whom the Software is
        !            16: .\" * furnished to do so, under the terms of the COPYING file.
        !            17: .\" *
        !            18: .\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
        !            19: .\" * KIND, either express or implied.
        !            20: .\" *
        !            21: .\" **************************************************************************
        !            22: .TH curl_slist_append 3 "January 02, 2019" "libcurl 7.70.0" "libcurl Manual"
        !            23: 
        !            24: .SH NAME
        !            25: curl_slist_append - add a string to an slist
        !            26: .SH SYNOPSIS
        !            27: .B #include <curl/curl.h>
        !            28: .sp
        !            29: .BI "struct curl_slist *curl_slist_append(struct curl_slist *" list,
        !            30: .BI "const char * "string ");"
        !            31: .ad
        !            32: .SH DESCRIPTION
        !            33: \fIcurl_slist_append(3)\fP appends a string to a linked list of strings. The
        !            34: existing \fBlist\fP should be passed as the first argument and the new list is
        !            35: returned from this function. Pass in NULL in the \fBlist\fP argument to create
        !            36: a new list. The specified \fBstring\fP has been appended when this function
        !            37: returns. \fIcurl_slist_append(3)\fP copies the string.
        !            38: 
        !            39: The list should be freed again (after usage) with
        !            40: \fIcurl_slist_free_all(3)\fP.
        !            41: .SH RETURN VALUE
        !            42: A null pointer is returned if anything went wrong, otherwise the new list
        !            43: pointer is returned. To avoid overwriting an existing non-empty list on
        !            44: failure, the new list should be returned to a temporary variable which can
        !            45: be tested for NULL before updating the original list pointer.
        !            46: .SH EXAMPLE
        !            47: .nf
        !            48: CURL *handle;
        !            49: struct curl_slist *slist=NULL;
        !            50: struct curl_slist *temp=NULL;
        !            51: 
        !            52: slist = curl_slist_append(slist, "pragma:");
        !            53: 
        !            54: if (slist == NULL)
        !            55:   return -1;
        !            56: 
        !            57: temp = curl_slist_append(slist, "Accept:")
        !            58: 
        !            59: if (temp == NULL) {
        !            60:   curl_slist_free_all(slist);
        !            61:   return -1;
        !            62: }
        !            63: 
        !            64: slist = temp;
        !            65: 
        !            66: curl_easy_setopt(handle, CURLOPT_HTTPHEADER, slist);
        !            67: 
        !            68: curl_easy_perform(handle);
        !            69: 
        !            70: curl_slist_free_all(slist); /* free the list again */
        !            71: .fi
        !            72: .SH "SEE ALSO"
        !            73: .BR curl_slist_free_all "(3), "