diff options
Diffstat (limited to 'lib/yang.c')
| -rw-r--r-- | lib/yang.c | 156 |
1 files changed, 129 insertions, 27 deletions
diff --git a/lib/yang.c b/lib/yang.c index 131d89cdfa..18d2ac58d3 100644 --- a/lib/yang.c +++ b/lib/yang.c @@ -6,6 +6,7 @@ #include <zebra.h> +#include "darr.h" #include "log.h" #include "lib_errors.h" #include "yang.h" @@ -363,33 +364,10 @@ unsigned int yang_snode_num_keys(const struct lysc_node *snode) return count; } -void yang_dnode_get_path(const struct lyd_node *dnode, char *xpath, - size_t xpath_len) -{ - lyd_path(dnode, LYD_PATH_STD, xpath, xpath_len); -} - -const char *yang_dnode_get_schema_name(const struct lyd_node *dnode, - const char *xpath_fmt, ...) +char *yang_dnode_get_path(const struct lyd_node *dnode, char *xpath, + size_t xpath_len) { - if (xpath_fmt) { - va_list ap; - char xpath[XPATH_MAXLEN]; - - va_start(ap, xpath_fmt); - vsnprintf(xpath, sizeof(xpath), xpath_fmt, ap); - va_end(ap); - - dnode = yang_dnode_get(dnode, xpath); - if (!dnode) { - flog_err(EC_LIB_YANG_DNODE_NOT_FOUND, - "%s: couldn't find %s", __func__, xpath); - zlog_backtrace(LOG_ERR); - abort(); - } - } - - return dnode->schema->name; + return lyd_path(dnode, LYD_PATH_STD, xpath, xpath_len); } struct lyd_node *yang_dnode_get(const struct lyd_node *dnode, const char *xpath) @@ -673,6 +651,37 @@ static void ly_log_cb(LY_LOG_LEVEL level, const char *msg, const char *path) zlog(priority, "libyang: %s", msg); } +static ssize_t yang_print_darr(void *arg, const void *buf, size_t count) +{ + uint8_t *dst = darr_append_n(*(uint8_t **)arg, count); + + memcpy(dst, buf, count); + return count; +} + +LY_ERR yang_print_tree_append(uint8_t **darr, const struct lyd_node *root, + LYD_FORMAT format, uint32_t options) +{ + LY_ERR err; + + err = lyd_print_clb(yang_print_darr, darr, root, format, options); + if (err) + zlog_err("Failed to save yang tree: %s", ly_last_errmsg()); + else if (format != LYD_LYB) + *darr_append(*darr) = 0; + return err; +} + +uint8_t *yang_print_tree(const struct lyd_node *root, LYD_FORMAT format, + uint32_t options) +{ + uint8_t *darr = NULL; + + if (yang_print_tree_append(&darr, root, format, options)) + return NULL; + return darr; +} + const char *yang_print_errors(struct ly_ctx *ly_ctx, char *buf, size_t buf_len) { struct ly_err_item *ei; @@ -713,6 +722,7 @@ struct ly_ctx *yang_ctx_new_setup(bool embedded_modules, bool explicit_compile) { struct ly_ctx *ctx = NULL; const char *yang_models_path = YANG_MODELS_PATH; + uint options; LY_ERR err; if (access(yang_models_path, R_OK | X_OK)) { @@ -726,7 +736,7 @@ struct ly_ctx *yang_ctx_new_setup(bool embedded_modules, bool explicit_compile) YANG_MODELS_PATH); } - uint options = LY_CTX_NO_YANGLIBRARY | LY_CTX_DISABLE_SEARCHDIR_CWD; + options = LY_CTX_NO_YANGLIBRARY | LY_CTX_DISABLE_SEARCHDIR_CWD; if (explicit_compile) options |= LY_CTX_EXPLICIT_COMPILE; err = ly_ctx_new(yang_models_path, options, &ctx); @@ -917,3 +927,95 @@ uint32_t yang_get_list_elements_count(const struct lyd_node *node) } while (node); return count; } + +int yang_get_key_preds(char *s, const struct lysc_node *snode, + struct yang_list_keys *keys, ssize_t space) +{ + const struct lysc_node_leaf *skey; + ssize_t len2, len = 0; + ssize_t i = 0; + + LY_FOR_KEYS (snode, skey) { + assert(i < keys->num); + len2 = snprintf(s + len, space - len, "[%s='%s']", skey->name, + keys->key[i]); + if (len2 > space - len) + len = space; + else + len += len2; + i++; + } + + assert(i == keys->num); + return i; +} + +int yang_get_node_keys(struct lyd_node *node, struct yang_list_keys *keys) +{ + struct lyd_node *child = lyd_child(node); + + keys->num = 0; + for (; child && lysc_is_key(child->schema); child = child->next) { + const char *value = lyd_get_value(child); + + if (!value) + return NB_ERR; + strlcpy(keys->key[keys->num], value, + sizeof(keys->key[keys->num])); + keys->num++; + } + return NB_OK; +} + +LY_ERR yang_lyd_new_list(struct lyd_node_inner *parent, + const struct lysc_node *snode, + const struct yang_list_keys *list_keys, + struct lyd_node_inner **node) +{ + struct lyd_node *pnode = &parent->node; + struct lyd_node **nodepp = (struct lyd_node **)node; + const char(*keys)[LIST_MAXKEYLEN] = list_keys->key; + + /* + * When + * https://github.com/CESNET/libyang/commit/2c1e327c7c2dd3ba12d466a4ebcf62c1c44116c4 + * is released in libyang we should add a configure.ac check for the + * lyd_new_list3 function and use it here. + */ + switch (list_keys->num) { + case 0: + return lyd_new_list(pnode, snode->module, snode->name, false, + nodepp); + case 1: + return lyd_new_list(pnode, snode->module, snode->name, false, + nodepp, keys[0]); + case 2: + return lyd_new_list(pnode, snode->module, snode->name, false, + nodepp, keys[0], keys[1]); + case 3: + return lyd_new_list(pnode, snode->module, snode->name, false, + nodepp, keys[0], keys[1], keys[2]); + case 4: + return lyd_new_list(pnode, snode->module, snode->name, false, + nodepp, keys[0], keys[1], keys[2], keys[3]); + case 5: + return lyd_new_list(pnode, snode->module, snode->name, false, + nodepp, keys[0], keys[1], keys[2], keys[3], + keys[4]); + case 6: + return lyd_new_list(pnode, snode->module, snode->name, false, + nodepp, keys[0], keys[1], keys[2], keys[3], + keys[4], keys[5]); + case 7: + return lyd_new_list(pnode, snode->module, snode->name, false, + nodepp, keys[0], keys[1], keys[2], keys[3], + keys[4], keys[5], keys[6]); + case 8: + return lyd_new_list(pnode, snode->module, snode->name, false, + nodepp, keys[0], keys[1], keys[2], keys[3], + keys[4], keys[5], keys[6], keys[7]); + } + _Static_assert(LIST_MAXKEYS == 8, "max key mismatch in switch unroll"); + /*NOTREACHED*/ + return LY_EINVAL; +} |