NeoMutt  2021-10-29-33-g41675a
Teaching an old dog new tricks
DOXYGEN
myvar.c
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1 
29 #include "config.h"
30 #include <stddef.h>
31 #include "mutt/lib.h"
32 #include "myvar.h"
33 
34 struct MyVarList MyVars = TAILQ_HEAD_INITIALIZER(MyVars);
35 
44 static struct MyVar *myvar_new(const char *name, const char *value)
45 {
46  struct MyVar *myv = mutt_mem_calloc(1, sizeof(struct MyVar));
47  myv->name = mutt_str_dup(name);
48  myv->value = mutt_str_dup(value);
49  return myv;
50 }
51 
56 static void myvar_free(struct MyVar **ptr)
57 {
58  if (!ptr || !*ptr)
59  return;
60 
61  struct MyVar *myv = *ptr;
62  FREE(&myv->name);
63  FREE(&myv->value);
64  FREE(ptr);
65 }
66 
73 static struct MyVar *myvar_find(const char *var)
74 {
75  struct MyVar *myv = NULL;
76 
77  TAILQ_FOREACH(myv, &MyVars, entries)
78  {
79  if (mutt_str_equal(myv->name, var))
80  return myv;
81  }
82 
83  return NULL;
84 }
85 
92 const char *myvar_get(const char *var)
93 {
94  struct MyVar *myv = myvar_find(var);
95 
96  if (myv)
97  {
98  return NONULL(myv->value);
99  }
100 
101  return NULL;
102 }
103 
109 void myvar_set(const char *var, const char *val)
110 {
111  struct MyVar *myv = myvar_find(var);
112 
113  if (myv)
114  {
115  mutt_str_replace(&myv->value, val);
116  return;
117  }
118 
119  myv = myvar_new(var, val);
120  TAILQ_INSERT_TAIL(&MyVars, myv, entries);
121 }
122 
128 void myvar_append(const char *var, const char *val)
129 {
130  struct MyVar *myv = myvar_find(var);
131 
132  if (myv)
133  {
134  mutt_str_append_item(&myv->value, val, '\0');
135  return;
136  }
137 
138  myv = myvar_new(var, val);
139  TAILQ_INSERT_TAIL(&MyVars, myv, entries);
140 }
141 
146 void myvar_del(const char *var)
147 {
148  struct MyVar *myv = myvar_find(var);
149 
150  if (myv)
151  {
152  TAILQ_REMOVE(&MyVars, myv, entries);
153  myvar_free(&myv);
154  }
155 }
156 
161 void myvarlist_free(struct MyVarList *list)
162 {
163  if (!list)
164  return;
165 
166  struct MyVar *myv = NULL;
167  struct MyVar *tmp = NULL;
168  TAILQ_FOREACH_SAFE(myv, list, entries, tmp)
169  {
170  TAILQ_REMOVE(list, myv, entries);
171  myvar_free(&myv);
172  }
173 }
void * mutt_mem_calloc(size_t nmemb, size_t size)
Allocate zeroed memory on the heap.
Definition: memory.c:50
#define FREE(x)
Definition: memory.h:40
Convenience wrapper for the library headers.
char * mutt_str_dup(const char *str)
Copy a string, safely.
Definition: string.c:181
void mutt_str_append_item(char **str, const char *item, char sep)
Add string to another separated by sep.
Definition: string.c:277
bool mutt_str_equal(const char *a, const char *b)
Compare two strings.
Definition: string.c:715
char * mutt_str_replace(char **p, const char *s)
Replace one string with another.
Definition: string.c:257
void myvar_del(const char *var)
Unset the value of a "my_" variable.
Definition: myvar.c:146
struct MyVarList MyVars
List of all the user's custom config variables.
Definition: myvar.c:34
const char * myvar_get(const char *var)
Get the value of a "my_" variable.
Definition: myvar.c:92
void myvar_set(const char *var, const char *val)
Set the value of a "my_" variable.
Definition: myvar.c:109
static void myvar_free(struct MyVar **ptr)
Free a MyVar.
Definition: myvar.c:56
void myvar_append(const char *var, const char *val)
Append to the value of a "my_" variable.
Definition: myvar.c:128
void myvarlist_free(struct MyVarList *list)
Free a List of MyVars.
Definition: myvar.c:161
static struct MyVar * myvar_find(const char *var)
Locate a "my_" variable.
Definition: myvar.c:73
static struct MyVar * myvar_new(const char *name, const char *value)
Create a new MyVar.
Definition: myvar.c:44
Handling of personal config ('my' variables)
#define TAILQ_FOREACH(var, head, field)
Definition: queue.h:725
#define TAILQ_FOREACH_SAFE(var, head, field, tvar)
Definition: queue.h:735
#define TAILQ_INSERT_TAIL(head, elm, field)
Definition: queue.h:809
#define TAILQ_REMOVE(head, elm, field)
Definition: queue.h:841
#define TAILQ_HEAD_INITIALIZER(head)
Definition: queue.h:637
#define NONULL(x)
Definition: string2.h:37
A user-set variable.
Definition: myvar.h:32
char * name
Name of user variable.
Definition: myvar.h:33
char * value
Value of user variable.
Definition: myvar.h:34