libyang  3.4.2
libyang is YANG data modelling language parser and toolkit written (and providing API) in C.
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empty.c
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1 
15 #include "plugins_types.h"
16 
17 #include <stdint.h>
18 #include <stdlib.h>
19 
20 #include "libyang.h"
21 
22 /* additional internal headers for some useful simple macros */
23 #include "compat.h"
24 #include "ly_common.h"
25 #include "plugins_internal.h" /* LY_TYPE_*_STR */
26 
36 LIBYANG_API_DEF LY_ERR
37 lyplg_type_store_empty(const struct ly_ctx *ctx, const struct lysc_type *type, const void *value, size_t value_len,
38  uint32_t options, LY_VALUE_FORMAT UNUSED(format), void *UNUSED(prefix_data), uint32_t hints,
39  const struct lysc_node *UNUSED(ctx_node), struct lyd_value *storage, struct lys_glob_unres *UNUSED(unres),
40  struct ly_err_item **err)
41 {
42  LY_ERR ret = LY_SUCCESS;
43 
44  /* init storage */
45  memset(storage, 0, sizeof *storage);
46  storage->realtype = type;
47 
48  /* check hints */
49  ret = lyplg_type_check_hints(hints, value, value_len, type->basetype, NULL, err);
50  LY_CHECK_GOTO(ret, cleanup);
51 
52  /* validation */
53  if (value_len) {
54  ret = ly_err_new(err, LY_EVALID, LYVE_DATA, NULL, NULL, "Invalid empty value length %zu.", value_len);
55  goto cleanup;
56  }
57 
58  /* store canonical value, it always is */
59  if (options & LYPLG_TYPE_STORE_DYNAMIC) {
60  ret = lydict_insert_zc(ctx, (char *)value, &storage->_canonical);
61  options &= ~LYPLG_TYPE_STORE_DYNAMIC;
62  LY_CHECK_GOTO(ret, cleanup);
63  } else {
64  ret = lydict_insert(ctx, "", value_len, &storage->_canonical);
65  LY_CHECK_GOTO(ret, cleanup);
66  }
67 
68 cleanup:
69  if (options & LYPLG_TYPE_STORE_DYNAMIC) {
70  free((void *)value);
71  }
72 
73  if (ret) {
74  lyplg_type_free_simple(ctx, storage);
75  }
76  return ret;
77 }
78 
86 const struct lyplg_type_record plugins_empty[] = {
87  {
88  .module = "",
89  .revision = NULL,
90  .name = LY_TYPE_EMPTY_STR,
91 
92  .plugin.id = "libyang 2 - empty, version 1",
93  .plugin.store = lyplg_type_store_empty,
94  .plugin.validate = NULL,
95  .plugin.compare = lyplg_type_compare_simple,
96  .plugin.sort = lyplg_type_sort_simple,
97  .plugin.print = lyplg_type_print_simple,
98  .plugin.duplicate = lyplg_type_dup_simple,
99  .plugin.free = lyplg_type_free_simple,
100  .plugin.lyb_data_len = 0,
101  },
102  {0}
103 };
struct lysc_type * realtype
Definition: tree_data.h:575
Compiled YANG data node.
Definition: tree_schema.h:1439
memset(value->fixed_mem, 0, LYD_VALUE_FIXED_MEM_SIZE)
LIBYANG_API_DECL LY_ERR lyplg_type_store_empty(const struct ly_ctx *ctx, const struct lysc_type *type, const void *value, size_t value_len, uint32_t options, LY_VALUE_FORMAT format, void *prefix_data, uint32_t hints, const struct lysc_node *ctx_node, struct lyd_value *storage, struct lys_glob_unres *unres, struct ly_err_item **err)
Implementation of lyplg_type_store_clb for the built-in empty type.
LIBYANG_API_DECL LY_ERR lyplg_type_compare_simple(const struct ly_ctx *ctx, const struct lyd_value *val1, const struct lyd_value *val2)
Implementation of lyplg_type_compare_clb for a generic simple type.
LIBYANG_API_DECL const void * lyplg_type_print_simple(const struct ly_ctx *ctx, const struct lyd_value *value, LY_VALUE_FORMAT format, void *prefix_data, ly_bool *dynamic, size_t *value_len)
Implementation of lyplg_type_print_clb for a generic simple type.
#define LYPLG_TYPE_STORE_DYNAMIC
LIBYANG_API_DEF int lyplg_type_sort_simple(const struct ly_ctx *ctx, const struct lyd_value *val1, const struct lyd_value *val2)
Implementation of lyplg_type_sort_clb for a generic simple type.
The main libyang public header.
YANG data representation.
Definition: tree_data.h:571
const char * _canonical
Definition: tree_data.h:572
Libyang full error structure.
Definition: log.h:285
Definition: log.h:277
LIBYANG_API_DECL LY_ERR ly_err_new(struct ly_err_item **err, LY_ERR ecode, LY_VECODE vecode, char *data_path, char *apptag, const char *err_format,...) _FORMAT_PRINTF(6
Create and fill error structure.
LIBYANG_API_DECL LY_ERR lydict_insert(const struct ly_ctx *ctx, const char *value, size_t len, const char **str_p)
Insert string into dictionary. If the string is already present, only a reference counter is incremen...
LIBYANG_API_DECL LY_ERR lyplg_type_check_hints(uint32_t hints, const char *value, size_t value_len, LY_DATA_TYPE type, int *base, struct ly_err_item **err)
Check that the type is suitable for the parser&#39;s hints (if any) in the specified format.
const char * module
LIBYANG_API_DECL LY_ERR lydict_insert_zc(const struct ly_ctx *ctx, char *value, const char **str_p)
Insert string into dictionary - zerocopy version. If the string is already present, only a reference counter is incremented and no memory allocation is performed. This insert function variant avoids duplication of specified value - it is inserted into the dictionary directly.
LY_VALUE_FORMAT
All kinds of supported value formats and prefix mappings to modules.
Definition: tree.h:234
struct lyplg_type_record plugins_empty[]
Plugin information for empty type implementation.
Definition: empty.c:86
Definition: log.h:248
LY_DATA_TYPE basetype
Definition: tree_schema.h:1305
LIBYANG_API_DECL LY_ERR lyplg_type_dup_simple(const struct ly_ctx *ctx, const struct lyd_value *original, struct lyd_value *dup)
Implementation of lyplg_type_dup_clb for a generic simple type.
LIBYANG_API_DECL void lyplg_type_free_simple(const struct ly_ctx *ctx, struct lyd_value *value)
Implementation of lyplg_type_free_clb for a generic simple type.
API for (user) types plugins.
LY_ERR
libyang&#39;s error codes returned by the libyang functions.
Definition: log.h:240
libyang context handler.