slist.c
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22 
23 #include "curl_setup.h"
24 
25 #include <curl/curl.h>
26 
27 #include "slist.h"
28 
29 /* The last #include files should be: */
30 #include "curl_memory.h"
31 #include "memdebug.h"
32 
33 /* returns last node in linked list */
34 static struct curl_slist *slist_get_last(struct curl_slist *list)
35 {
36  struct curl_slist *item;
37 
38  /* if caller passed us a NULL, return now */
39  if(!list)
40  return NULL;
41 
42  /* loop through to find the last item */
43  item = list;
44  while(item->next) {
45  item = item->next;
46  }
47  return item;
48 }
49 
50 /*
51  * Curl_slist_append_nodup() appends a string to the linked list. Rather than
52  * copying the string in dynamic storage, it takes its ownership. The string
53  * should have been malloc()ated. Curl_slist_append_nodup always returns
54  * the address of the first record, so that you can use this function as an
55  * initialization function as well as an append function.
56  * If an error occurs, NULL is returned and the string argument is NOT
57  * released.
58  */
59 struct curl_slist *Curl_slist_append_nodup(struct curl_slist *list, char *data)
60 {
61  struct curl_slist *last;
62  struct curl_slist *new_item;
63 
64  DEBUGASSERT(data);
65 
66  new_item = malloc(sizeof(struct curl_slist));
67  if(!new_item)
68  return NULL;
69 
70  new_item->next = NULL;
71  new_item->data = data;
72 
73  /* if this is the first item, then new_item *is* the list */
74  if(!list)
75  return new_item;
76 
77  last = slist_get_last(list);
78  last->next = new_item;
79  return list;
80 }
81 
82 /*
83  * curl_slist_append() appends a string to the linked list. It always returns
84  * the address of the first record, so that you can use this function as an
85  * initialization function as well as an append function. If you find this
86  * bothersome, then simply create a separate _init function and call it
87  * appropriately from within the program.
88  */
90  const char *data)
91 {
92  char *dupdata = strdup(data);
93 
94  if(!dupdata)
95  return NULL;
96 
97  list = Curl_slist_append_nodup(list, dupdata);
98  if(!list)
99  free(dupdata);
100 
101  return list;
102 }
103 
104 /*
105  * Curl_slist_duplicate() duplicates a linked list. It always returns the
106  * address of the first record of the cloned list or NULL in case of an
107  * error (or if the input list was NULL).
108  */
110 {
111  struct curl_slist *outlist = NULL;
112  struct curl_slist *tmp;
113 
114  while(inlist) {
115  tmp = curl_slist_append(outlist, inlist->data);
116 
117  if(!tmp) {
118  curl_slist_free_all(outlist);
119  return NULL;
120  }
121 
122  outlist = tmp;
123  inlist = inlist->next;
124  }
125  return outlist;
126 }
127 
128 /* be nice and clean up resources */
129 void curl_slist_free_all(struct curl_slist *list)
130 {
131  struct curl_slist *next;
132  struct curl_slist *item;
133 
134  if(!list)
135  return;
136 
137  item = list;
138  do {
139  next = item->next;
140  Curl_safefree(item->data);
141  free(item);
142  item = next;
143  } while(next);
144 }
145 
#define free(ptr)
Definition: curl_memory.h:130
void curl_slist_free_all(struct curl_slist *list)
Definition: slist.c:129
struct curl_slist * Curl_slist_append_nodup(struct curl_slist *list, char *data)
Definition: slist.c:59
char * data
Definition: curl.h:2336
#define strdup(ptr)
Definition: curl_memory.h:122
#define DEBUGASSERT(x)
#define malloc(size)
Definition: curl_memory.h:124
struct curl_httppost * last
Definition: unit1308.c:46
struct curl_slist * next
Definition: curl.h:2337
UNITTEST_START struct Curl_easy data
Definition: unit1399.c:82
#define Curl_safefree(ptr)
Definition: memdebug.h:170
static struct curl_slist * slist_get_last(struct curl_slist *list)
Definition: slist.c:34
struct curl_slist * Curl_slist_duplicate(struct curl_slist *inlist)
Definition: slist.c:109
struct curl_slist * curl_slist_append(struct curl_slist *list, const char *data)
Definition: slist.c:89
Definition: debug.c:29


rc_tagdetect_client
Author(s): Monika Florek-Jasinska , Raphael Schaller
autogenerated on Sat Feb 13 2021 03:42:16