diff options
Diffstat (limited to 'main/chanvars.c')
-rw-r--r-- | main/chanvars.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/main/chanvars.c b/main/chanvars.c index da7449dc6..37714e9a2 100644 --- a/main/chanvars.c +++ b/main/chanvars.c @@ -90,4 +90,67 @@ const char *ast_var_value(const struct ast_var_t *var) return (var ? var->value : NULL); } +char *ast_var_find(const struct varshead *head, const char *name) +{ + struct ast_var_t *var; + + AST_LIST_TRAVERSE(head, var, entries) { + if (!strcmp(name, var->name)) { + return var->value; + } + } + return NULL; +} + +struct varshead *ast_var_list_create(void) +{ + struct varshead *head; + + head = ast_calloc(1, sizeof(*head)); + if (!head) { + return NULL; + } + AST_LIST_HEAD_INIT_NOLOCK(head); + return head; +} + +void ast_var_list_destroy(struct varshead *head) +{ + struct ast_var_t *var; + + if (!head) { + return; + } + while ((var = AST_LIST_REMOVE_HEAD(head, entries))) { + ast_var_delete(var); + } + + ast_free(head); +} + +struct varshead *ast_var_list_clone(struct varshead *head) +{ + struct varshead *clone; + struct ast_var_t *var, *newvar; + + if (!head) { + return NULL; + } + + clone = ast_var_list_create(); + if (!clone) { + return NULL; + } + + AST_VAR_LIST_TRAVERSE(head, var) { + newvar = ast_var_assign(var->name, var->value); + if (!newvar) { + ast_var_list_destroy(clone); + return NULL; + } + AST_VAR_LIST_INSERT_TAIL(clone, newvar); + } + + return clone; +} |