xref: /curl/lib/easygetopt.c (revision c074ba64)
1 /***************************************************************************
2  *                                  _   _ ____  _
3  *  Project                     ___| | | |  _ | |
4  *                             / __| | | | |_) | |
5  *                            | (__| |_| |  _ <| |___
6  *                             ___|___/|_| ______|
7  *
8  * Copyright (C) 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.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  * SPDX-License-Identifier: curl
22  *
23  ***************************************************************************/
24 
25 #include "curl_setup.h"
26 #include "strcase.h"
27 #include "easyoptions.h"
28 
29 #ifndef CURL_DISABLE_GETOPTIONS
30 
31 /* Lookups easy options at runtime */
lookup(const char * name,CURLoption id)32 static struct curl_easyoption *lookup(const char *name, CURLoption id)
33 {
34   DEBUGASSERT(name || id);
35   DEBUGASSERT(!Curl_easyopts_check());
36   if(name || id) {
37     struct curl_easyoption *o = &Curl_easyopts[0];
38     do {
39       if(name) {
40         if(strcasecompare(o->name, name))
41           return o;
42       }
43       else {
44         if((o->id == id) && !(o->flags & CURLOT_FLAG_ALIAS))
45           /* do not match alias options */
46           return o;
47       }
48       o++;
49     } while(o->name);
50   }
51   return NULL;
52 }
53 
curl_easy_option_by_name(const char * name)54 const struct curl_easyoption *curl_easy_option_by_name(const char *name)
55 {
56   /* when name is used, the id argument is ignored */
57   return lookup(name, CURLOPT_LASTENTRY);
58 }
59 
curl_easy_option_by_id(CURLoption id)60 const struct curl_easyoption *curl_easy_option_by_id(CURLoption id)
61 {
62   return lookup(NULL, id);
63 }
64 
65 /* Iterates over available options */
66 const struct curl_easyoption *
curl_easy_option_next(const struct curl_easyoption * prev)67 curl_easy_option_next(const struct curl_easyoption *prev)
68 {
69   if(prev && prev->name) {
70     prev++;
71     if(prev->name)
72       return prev;
73   }
74   else if(!prev)
75     return &Curl_easyopts[0];
76   return NULL;
77 }
78 
79 #else
curl_easy_option_by_name(const char * name)80 const struct curl_easyoption *curl_easy_option_by_name(const char *name)
81 {
82   (void)name;
83   return NULL;
84 }
85 
curl_easy_option_by_id(CURLoption id)86 const struct curl_easyoption *curl_easy_option_by_id (CURLoption id)
87 {
88   (void)id;
89   return NULL;
90 }
91 
92 const struct curl_easyoption *
curl_easy_option_next(const struct curl_easyoption * prev)93 curl_easy_option_next(const struct curl_easyoption *prev)
94 {
95   (void)prev;
96   return NULL;
97 }
98 #endif
99