Datastore cache introduced; Added yang to XML API
This commit is contained in:
Olof hagsand
parent
c1cb3a2b6c
commit
e169485985
34 changed files with 884 additions and 389 deletions
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@ -32,6 +32,8 @@
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***** END LICENSE BLOCK *****
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* XML support functions.
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* @see https://www.w3.org/TR/2008/REC-xml-20081126
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* https://www.w3.org/TR/2009/REC-xml-names-20091208
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*/
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#ifdef HAVE_CONFIG_H
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@ -86,12 +88,10 @@ struct xml{
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char *x_value; /* attribute and body nodes have values */
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int _x_vector_i; /* internal use: xml_child_each */
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int x_flags; /* Flags according to XML_FLAG_* above */
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void *x_spec; /* Pointer to specification, eg yang, by
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yang_stmt *x_spec; /* Pointer to specification, eg yang, by
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reference, dont free */
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cg_var *x_cv; /* If body this contains the typed value */
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#if (XML_CHILD_HASH==1)
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clicon_hash_t *x_hash; /* Hash of children */
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#endif
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};
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/* Mapping between xml type <--> string */
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@ -103,6 +103,11 @@ static const map_str2int xsmap[] = {
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{NULL, -1}
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};
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/* Hash for XML trees list entries
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* Experimental
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*/
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int xml_child_hash = 0;
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/*! Translate from xml type in enum form to string keyword
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* @param[in] type Xml type
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* @retval str String keyword
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@ -490,57 +495,44 @@ xml_childvec_get(cxobj *x)
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return x->x_childvec;
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}
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/*! Create new xml node given a name and parent. Free it with xml_free().
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/*! Create new xml node given a name and parent. Free with xml_free().
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*
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* @param[in] name Name of new
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* @param[in] xp The parent where the new xml node should be inserted
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* @retval xml Created xml object if successful
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* @param[in] spec Yang stmt or NULL.
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* @retval xml Created xml object if successful. Free with xml_free()
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* @retval NULL Error and clicon_err() called
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* @code
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* cxobj *x;
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* if ((x = xml_new(name, xparent)) == NULL)
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* if ((x = xml_new(name, xparent, NULL)) == NULL)
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* err;
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* ...
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* xml_free(x);
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* @endcode
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* @see xml_new_spec Also sets yang spec.
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* @note yspec may be NULL either because it is not known or it is irrelevant,
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* eg for body or attribute
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*/
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cxobj *
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xml_new(char *name,
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cxobj *xp)
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cxobj *xp,
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void *spec)
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{
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cxobj *xn;
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cxobj *x;
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if ((xn=malloc(sizeof(cxobj))) == NULL){
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if ((x = malloc(sizeof(cxobj))) == NULL){
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clicon_err(OE_XML, errno, "%s: malloc", __FUNCTION__);
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return NULL;
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}
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memset(xn, 0, sizeof(cxobj));
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if ((xml_name_set(xn, name)) < 0)
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memset(x, 0, sizeof(cxobj));
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if ((xml_name_set(x, name)) < 0)
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return NULL;
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xml_parent_set(xn, xp);
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if (xp)
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if (xml_child_append(xp, xn) < 0)
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return NULL;
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return xn;
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}
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/*! Create new xml node given a name, parent and spec.
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* @param[in] name Name of new xml node
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* @param[in] xp XML parent
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* @param[in] spec Yang spec
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* @retval NULL Error
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* @retval x XML tree. Free with xml_free().
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*/
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cxobj *
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xml_new_spec(char *name,
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cxobj *xp,
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void *spec)
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{
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cxobj *x;
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if ((x = xml_new(name, xp)) == NULL)
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xml_parent_set(x, xp);
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if (xp && xml_child_append(xp, x) < 0)
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return NULL;
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x->x_spec = spec; /* Can be NULL */
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if (xml_child_hash && xml_hash_add(x) < 0)
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return NULL;
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x->x_spec = spec;
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return x;
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}
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@ -630,7 +622,7 @@ xml_insert(cxobj *xp,
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{
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cxobj *xc; /* new child */
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if ((xc = xml_new(tag, NULL)) == NULL)
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if ((xc = xml_new(tag, NULL, NULL)) == NULL)
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goto catch;
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while (xp->x_childvec_len)
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if (xml_addsub(xc, xml_child_i(xp, 0)) < 0)
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@ -658,9 +650,8 @@ xml_purge(cxobj *xc)
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int i;
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cxobj *xp;
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#if (XML_CHILD_HASH==1)
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xml_hash_op(xc, 0);
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#endif
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if (xml_child_hash)
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xml_hash_rm_entry(xc);
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if ((xp = xml_parent(xc)) != NULL){
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/* Find child order i in parent*/
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for (i=0; i<xml_child_nr(xp); i++)
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@ -923,10 +914,8 @@ xml_free(cxobj *x)
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x->x_childvec[i] = NULL;
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}
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}
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#if (XML_CHILD_HASH==1)
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if (x->x_hash)
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hash_free(x->x_hash);
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#endif
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if (x->x_childvec)
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free(x->x_childvec);
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free(x);
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@ -1061,22 +1050,29 @@ clicon_xml2cbuf(cbuf *cb,
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/*! Basic xml parsing function.
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* @param[in] str Pointer to string containing XML definition.
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* @param[in] yspec Yang specification or NULL
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* @param[out] xtop Top of XML parse tree. Assume created.
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* @see clicon_xml_parse_file clicon_xml_parse_string
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*/
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int
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xml_parse(char *str,
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cxobj *xt)
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xml_parse(char *str,
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yang_spec *yspec,
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cxobj *xt)
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{
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int retval = -1;
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struct xml_parse_yacc_arg ya = {0,};
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if (xt == NULL){
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clicon_err(OE_XML, errno, "Unexpected NULL XML");
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return -1;
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}
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if ((ya.ya_parse_string = strdup(str)) == NULL){
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clicon_err(OE_XML, errno, "%s: strdup", __FUNCTION__);
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clicon_err(OE_XML, errno, "strdup");
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return -1;
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}
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ya.ya_xparent = xt;
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ya.ya_skipspace = 1; /* remove all non-terminal bodies (strip pretty-print) */
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ya.ya_yspec = yspec;
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if (clixon_xml_parsel_init(&ya) < 0)
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goto done;
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if (clixon_xml_parseparse(&ya) != 0) /* yacc returns 1 on error */
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@ -1128,8 +1124,7 @@ xmltree2cbuf(cbuf *cb,
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return 0;
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}
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/*
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* FSM to detect a substring
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/*! FSM to detect a substring
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*/
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static inline int
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FSM(char *tag,
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@ -1147,7 +1142,8 @@ FSM(char *tag,
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* @param[in] fd A file descriptor containing the XML file (as ASCII characters)
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* @param[out] xt Pointer to an (on entry empty) pointer to an XML parse tree
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* _created_ by this function.
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* @param endtag Read until you encounter "endtag" in the stream
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* @param[in] endtag Read until you encounter "endtag" in the stream, or NULL
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* @param[in] yspec Yang specification, or NULL
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* @retval 0 OK
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* @retval -1 Error with clicon_err called
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*
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@ -1165,9 +1161,10 @@ FSM(char *tag,
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* May block
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*/
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int
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clicon_xml_parse_file(int fd,
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cxobj **cx,
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char *endtag)
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clicon_xml_parse_file(int fd,
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char *endtag,
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yang_spec *yspec,
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cxobj **xt)
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{
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int retval = -1;
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int ret;
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@ -1176,15 +1173,13 @@ clicon_xml_parse_file(int fd,
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char *xmlbuf = NULL;
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char *ptr;
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int maxbuf = BUFLEN;
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int endtaglen = strlen(endtag);
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int endtaglen = 0;
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int state = 0;
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int oldmaxbuf;
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if (endtag == NULL){
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clicon_err(OE_XML, 0, "%s: endtag required\n", __FUNCTION__);
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goto done;
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}
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*cx = NULL;
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if (endtag != NULL)
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endtaglen = strlen(endtag);
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*xt = NULL;
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if ((xmlbuf = malloc(maxbuf)) == NULL){
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clicon_err(OE_XML, errno, "%s: malloc", __FUNCTION__);
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goto done;
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@ -1199,16 +1194,17 @@ clicon_xml_parse_file(int fd,
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break;
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}
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if (ret != 0){
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state = FSM(endtag, ch, state);
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if (endtag)
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state = FSM(endtag, ch, state);
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xmlbuf[len++] = ch;
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}
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if (ret == 0 || state == endtaglen){
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if (ret == 0 ||
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(endtag && (state == endtaglen))){
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state = 0;
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if ((*cx = xml_new("top", NULL)) == NULL)
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break;
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if (xml_parse(ptr, *cx) < 0){
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if ((*xt = xml_new("top", NULL, NULL)) == NULL)
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break;
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if (xml_parse(ptr, yspec, *xt) < 0)
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goto done;
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}
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break;
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}
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if (len>=maxbuf-1){ /* Space: one for the null character */
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@ -1224,14 +1220,13 @@ clicon_xml_parse_file(int fd,
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} /* while */
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retval = 0;
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done:
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if (retval < 0 && *cx){
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free(*cx);
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*cx = NULL;
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if (retval < 0 && *xt){
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free(*xt);
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*xt = NULL;
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}
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if (xmlbuf)
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free(xmlbuf);
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return retval;
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// return (*cx)?0:-1;
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}
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/*! Read an XML definition from string and parse it into a parse-tree.
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@ -1252,12 +1247,13 @@ clicon_xml_parse_file(int fd,
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* @note you need to free the xml parse tree after use, using xml_free()
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*/
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int
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clicon_xml_parse_str(char *str,
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cxobj **cxtop)
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clicon_xml_parse_str(char *str,
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yang_spec *yspec,
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cxobj **cxtop)
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{
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if ((*cxtop = xml_new("top", NULL)) == NULL)
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return -1;
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return xml_parse(str, *cxtop);
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if ((*cxtop = xml_new("top", NULL, NULL)) == NULL)
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return -1;
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return xml_parse(str, yspec, *cxtop);
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}
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@ -1266,6 +1262,7 @@ clicon_xml_parse_str(char *str,
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* Utility function using stdarg instead of static string.
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* @param[out] xml_top Top of XML parse tree. Will add extra top element called 'top'.
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* you must free it after use, using xml_free()
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* @param[in] yspec Yang specification, or NULL
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* @param[in] format Pointer to string containing XML definition.
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* @retval 0 OK
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@ -1281,8 +1278,9 @@ clicon_xml_parse_str(char *str,
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* @note you need to free the xml parse tree after use, using xml_free()
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*/
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int
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clicon_xml_parse(cxobj **cxtop,
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char *format, ...)
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clicon_xml_parse(cxobj **cxtop,
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yang_spec *yspec,
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char *format, ...)
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{
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int retval = -1;
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va_list args;
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@ -1300,9 +1298,9 @@ clicon_xml_parse(cxobj **cxtop,
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va_start(args, format);
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len = vsnprintf(str, len, format, args) + 1;
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va_end(args);
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if ((*cxtop = xml_new("top", NULL)) == NULL)
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if ((*cxtop = xml_new("top", NULL, NULL)) == NULL)
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return -1;
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if (xml_parse(str, *cxtop) < 0)
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if (xml_parse(str, yspec, *cxtop) < 0)
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goto done;
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retval = 0;
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done:
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@ -1313,28 +1311,28 @@ clicon_xml_parse(cxobj **cxtop,
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/*! Copy single xml node without copying children
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*/
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static int
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copy_one(cxobj *xn0,
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cxobj *xn1)
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int
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xml_copy_one(cxobj *x0,
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cxobj *x1)
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{
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cg_var *cv1;
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xml_type_set(xn1, xml_type(xn0));
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if (xml_value(xn0)){ /* malloced string */
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if ((xn1->x_value = strdup(xn0->x_value)) == NULL){
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xml_type_set(x1, xml_type(x0));
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if (xml_value(x0)){ /* malloced string */
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if ((x1->x_value = strdup(x0->x_value)) == NULL){
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clicon_err(OE_XML, errno, "%s: strdup", __FUNCTION__);
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return -1;
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}
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}
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if (xml_name(xn0)) /* malloced string */
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if ((xml_name_set(xn1, xml_name(xn0))) < 0)
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if (xml_name(x0)) /* malloced string */
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if ((xml_name_set(x1, xml_name(x0))) < 0)
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return -1;
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if (xml_cv_get(xn0)){
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if ((cv1 = cv_dup(xml_cv_get(xn0))) == NULL){
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if (xml_cv_get(x0)){
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if ((cv1 = cv_dup(xml_cv_get(x0))) == NULL){
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clicon_err(OE_XML, errno, "%s: cv_dup", __FUNCTION__);
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return -1;
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}
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if ((xml_cv_set(xn1, cv1)) < 0)
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if ((xml_cv_set(x1, cv1)) < 0)
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return -1;
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}
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return 0;
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@ -1345,8 +1343,9 @@ copy_one(cxobj *xn0,
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* x1 should be a created placeholder. If x1 is non-empty,
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* the copied tree is appended to the existing tree.
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* @code
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* x1 = xml_new("new", xparent);
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* xml_copy(x0, x1);
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* x1 = xml_new("new", xparent, NULL);
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* if (xml_copy(x0, x1) < 0)
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* err;
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* @endcode
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*/
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int
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@ -1357,11 +1356,11 @@ xml_copy(cxobj *x0,
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cxobj *x;
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cxobj *xcopy;
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if (copy_one(x0, x1) <0)
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if (xml_copy_one(x0, x1) <0)
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goto done;
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x = NULL;
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while ((x = xml_child_each(x0, x, -1)) != NULL) {
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if ((xcopy = xml_new(xml_name(x), x1)) == NULL)
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if ((xcopy = xml_new(xml_name(x), x1, xml_spec(x))) == NULL)
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goto done;
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if (xml_copy(x, xcopy) < 0) /* recursion */
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goto done;
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@ -1384,7 +1383,7 @@ xml_dup(cxobj *x0)
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{
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cxobj *x1;
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|
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if ((x1 = xml_new("new", NULL)) == NULL)
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if ((x1 = xml_new("new", NULL, xml_spec(x0))) == NULL)
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return NULL;
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if (xml_copy(x0, x1) < 0)
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return NULL;
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|
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@ -1720,7 +1719,32 @@ xml_operation2str(enum operation_type op)
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}
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}
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|
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#if (XML_CHILD_HASH==1)
|
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/*! Given an XML object and a child name, return yang stmt of child
|
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* If no xml parent, find root yang stmt matching name
|
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* @param[in] name Name of child
|
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* @param[in] xp XML parent, can be NULL.
|
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* @param[in] yspec Yang specification (top level)
|
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* @param[out] yresult Pointer to yang stmt of result, or NULL, if not found
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*/
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int
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xml_child_spec(char *name,
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cxobj *xp,
|
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yang_spec *yspec,
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yang_stmt **yresult)
|
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{
|
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yang_stmt *y; /* result yang node */
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yang_stmt *yparent; /* parent yang */
|
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|
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if (xp && (yparent = xml_spec(xp)) != NULL)
|
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y = yang_find_datanode((yang_node*)yparent, name);
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else if (yspec)
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y = yang_find_topnode(yspec, name, 0); /* still NULL for config */
|
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else
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y = NULL;
|
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*yresult = y;
|
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return 0;
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}
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|
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/*! Return yang hash
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* Not necessarily set. Either has not been set yet (by xml_spec_set( or anyxml.
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*/
|
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|
|
@ -1730,7 +1754,7 @@ xml_hash(cxobj *x)
|
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return x->x_hash;
|
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}
|
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|
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int
|
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static int
|
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xml_hash_init(cxobj *x)
|
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{
|
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if ((x->x_hash = hash_init()) < 0)
|
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|
|
@ -1738,8 +1762,12 @@ xml_hash_init(cxobj *x)
|
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return 0;
|
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}
|
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|
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/*! XML remove hash only. Not in parent.
|
||||
* @param[in] x XML object
|
||||
* eg same as xml_hash_op(x, -1)
|
||||
*/
|
||||
int
|
||||
xml_hash_rm(cxobj *x)
|
||||
xml_hash_rm_only(cxobj *x)
|
||||
{
|
||||
if (x && x->x_hash){
|
||||
hash_free(x->x_hash);
|
||||
|
|
@ -1819,7 +1847,7 @@ xml_hash_key(cxobj *x,
|
|||
|
||||
/*! XML hash add. Create hash and add key/value to parent
|
||||
*
|
||||
* @param[in] arg -1: rm only hash 0: rm entry, 1: add
|
||||
* @param[in] arg 0: rm entry, 1: add
|
||||
* Typically called for a whole tree.
|
||||
*/
|
||||
int
|
||||
|
|
@ -1837,10 +1865,8 @@ xml_hash_op(cxobj *x,
|
|||
if (op==1)
|
||||
xml_hash_init(x);
|
||||
}
|
||||
else if (op==-1|| op==0)
|
||||
xml_hash_rm(x);
|
||||
if (op==-1)
|
||||
goto ok;
|
||||
else if (op==0)
|
||||
xml_hash_rm_only(x);
|
||||
if ((xp = xml_parent(x)) == NULL)
|
||||
goto ok;
|
||||
if ((ph = xml_hash(xp))==NULL)
|
||||
|
|
@ -1871,8 +1897,85 @@ xml_hash_op(cxobj *x,
|
|||
return retval;
|
||||
}
|
||||
|
||||
#endif
|
||||
/*! XML hash add. Create hash and add key/value to parent
|
||||
*
|
||||
* @param[in] x XML object
|
||||
* eg same as xml_hash_op(x, 1)
|
||||
*/
|
||||
int
|
||||
xml_hash_add(cxobj *x)
|
||||
{
|
||||
int retval = -1;
|
||||
cxobj *xp;
|
||||
clicon_hash_t *ph;
|
||||
yang_stmt *y;
|
||||
cbuf *key = NULL; /* cligen buffer hash key */
|
||||
|
||||
if ((ph = xml_hash(x))==NULL){
|
||||
xml_hash_init(x);
|
||||
ph = xml_hash(x);
|
||||
}
|
||||
if ((xp = xml_parent(x)) == NULL)
|
||||
goto ok;
|
||||
if ((y = xml_spec(x)) == NULL)
|
||||
goto ok;
|
||||
if ((key = cbuf_new()) == NULL){
|
||||
clicon_err(OE_XML, errno, "cbuf_new");
|
||||
goto done;
|
||||
}
|
||||
if (xml_hash_key(x, y, key) < 0)
|
||||
goto done;
|
||||
if (cbuf_len(key)){
|
||||
if (hash_add(ph, cbuf_get(key), &x, sizeof(x)) == NULL)
|
||||
goto done;
|
||||
}
|
||||
ok:
|
||||
retval = 0;
|
||||
done:
|
||||
if (key)
|
||||
cbuf_free(key);
|
||||
return retval;
|
||||
}
|
||||
|
||||
/*! XML hash rm. Create hash and add key/value to parent
|
||||
*
|
||||
* @param[in] x XML object
|
||||
* eg same as xml_hash_op(x, 0)
|
||||
*/
|
||||
int
|
||||
xml_hash_rm_entry(cxobj *x)
|
||||
{
|
||||
int retval = -1;
|
||||
cxobj *xp;
|
||||
clicon_hash_t *ph;
|
||||
yang_stmt *y;
|
||||
cbuf *key = NULL; /* cligen buffer hash key */
|
||||
|
||||
if (xml_hash(x)!=NULL)
|
||||
xml_hash_rm_only(x);
|
||||
if ((xp = xml_parent(x)) == NULL)
|
||||
goto ok;
|
||||
if ((ph = xml_hash(xp))==NULL)
|
||||
goto ok;
|
||||
if ((y = xml_spec(x)) == NULL)
|
||||
goto ok;
|
||||
if ((key = cbuf_new()) == NULL){
|
||||
clicon_err(OE_XML, errno, "cbuf_new");
|
||||
goto done;
|
||||
}
|
||||
if (xml_hash_key(x, y, key) < 0)
|
||||
goto done;
|
||||
if (cbuf_len(key)){
|
||||
if (hash_del(ph, cbuf_get(key)) < 0)
|
||||
goto done;
|
||||
}
|
||||
ok:
|
||||
retval = 0;
|
||||
done:
|
||||
if (key)
|
||||
cbuf_free(key);
|
||||
return retval;
|
||||
}
|
||||
|
||||
/*
|
||||
* Turn this on to get a xml parse and pretty print test program
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue