4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as
8 * published by the Free Software Foundation; either version 2.1 of the
9 * License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
21 * Copyright (c) 2014, 2017, Intel Corporation.
24 * Amir Shehata <amir.shehata@intel.com>
33 enum cYAML_object_type {
44 /* next/prev allow you to walk array/object chains. */
45 struct cYAML *cy_next, *cy_prev;
46 /* An array or object item will have a child pointer pointing
47 to a chain of the items in the array/object. */
48 struct cYAML *cy_child;
49 /* The type of the item, as above. */
50 enum cYAML_object_type cy_type;
52 /* The item's string, if type==CYAML_TYPE_STRING */
54 /* The item's number, if type==CYAML_TYPE_NUMBER */
56 /* The item's number, if type==CYAML_TYPE_NUMBER */
57 double cy_valuedouble;
58 /* The item's name string, if this item is the child of,
59 or is in the list of subitems of an object. */
61 /* user data which might need to be tracked per object */
65 typedef void (*cYAML_user_data_free_cb)(void *);
69 * Callback called when recursing through the tree
71 * cYAML* - pointer to the node currently being visitied
72 * void* - user data passed to the callback.
73 * void** - output value from the callback
75 * Returns true to continue recursing. false to stop recursing
77 typedef bool (*cYAML_walk_cb)(struct cYAML *, void *, void**);
81 * Build a tree representation of the YAML formatted text passed in.
83 * yaml_file - YAML file to parse and build tree representation
84 * yaml_blk - blk of YAML. yaml_file takes precedence if both
86 * yaml_blk_size - length of the yaml block (obtained via strlen)
88 struct cYAML *cYAML_build_tree(char *yaml_file, const char *yaml_blk,
90 struct cYAML **err_str, bool debug);
94 * Print the textual representation of a YAML tree to stderr
96 * node - Node where you want to start printing
98 void cYAML_print_tree(struct cYAML *node);
101 * cYAML_print_tree2file
102 * Print the textual representation of a YAML tree to file
104 * f - file to print to
105 * node - Node where you want to start printing
107 void cYAML_print_tree2file(FILE *f, struct cYAML *node);
111 * Free the cYAML tree returned as part of the cYAML_build_tree
113 * node - root of the tree to be freed
115 void cYAML_free_tree(struct cYAML *node);
118 * cYAML_get_object_item
119 * Returns the cYAML object which key correspods to the name passed in
120 * This function searches only through the current level.
122 * parent - is the parent object on which you want to conduct the search
123 * name - key name of the object you want to find.
125 struct cYAML *cYAML_get_object_item(struct cYAML *parent,
129 * cYAML_get_next_seq_item
130 * Returns the next item in the YAML sequence. This function uses the
131 * itm parameter to keep track of its position in the sequence. If the
132 * itm parameter is reset to NULL between calls that resets and returns
133 * the first item in the sequence.
134 * This function returns NULL when there are no more items in the
137 * seq - is the head node of the YAML sequence
138 * itm - [OUT] next sequence item to continue looking from next time.
141 struct cYAML *cYAML_get_next_seq_item(struct cYAML *seq,
146 * Returns 1 if the node provided is an ARRAY 0 otherwise
148 * node - the node to examine
151 bool cYAML_is_sequence(struct cYAML *node);
155 * Returns the cYAML object which key correspods to the name passed in
156 * this function searches the entire tree.
158 * root - is the root of the tree on which you want to conduct the search
159 * name - key name of the object you want to find.
161 struct cYAML *cYAML_find_object(struct cYAML *root, const char *key);
164 * cYAML_clean_usr_data
165 * walks the tree and for each node with some user data it calls the
166 * free_cb with the user data as a parameter.
168 * node: node to start the walk from
169 * free_cb: cb to call to cleanup the user data
171 void cYAML_clean_usr_data(struct cYAML *node,
172 cYAML_user_data_free_cb free_cb);
175 * cYAML_create_object
176 * Creates a CYAML of type OBJECT
178 * parent - parent node
181 struct cYAML *cYAML_create_object(struct cYAML *parent, char *key);
185 * Creates a CYAML of type ARRAY
186 * Once this is created, more sequence items can be added.
188 * parent - parent node
191 struct cYAML *cYAML_create_seq(struct cYAML *parent, char *key);
194 * cYAML_create_object
195 * Create a sequence item, which can have more entites added underneath
198 * parent - parent node
200 struct cYAML *cYAML_create_seq_item(struct cYAML *seq);
203 * cYAML_create_string
204 * Creates a cYAML node of type STRING
206 * parent - parent node
208 * value - value of node
210 struct cYAML *cYAML_create_string(struct cYAML *parent, char *key,
214 * cYAML_create_string
215 * Creates a cYAML node of type STRING
217 * parent - parent node
219 * value - value of node
221 struct cYAML *cYAML_create_number(struct cYAML *parent, char *key,
225 * cYAML_insert_sibling
226 * inserts one cYAML object as a sibling to another
228 * root - root node to have a sibling added to
229 * sibling - sibling to be added
231 void cYAML_insert_sibling(struct cYAML *root, struct cYAML *sibling);
235 * inserts one cYAML object as a child to another
237 * parent - parent node to have a child added to
238 * child - child to be added
240 void cYAML_insert_child(struct cYAML *parent, struct cYAML *node);
244 * Build a YAML error message given:
246 * rc - return code to add in the error
247 * seq_no - a sequence number to add in the error
248 * cmd - the command that failed.
249 * entity - command entity that failed.
250 * err_str - error string to add in the error
251 * root - the root to which to add the YAML error
253 void cYAML_build_error(int rc, int seq_no, char *cmd,
254 char *entity, char *err_str,
255 struct cYAML **root);