c1bae276ff
* `201 Created` for created resources * `204 No Content` for replaced resources. * See [RESTCONF: HTTP return codes are not according to RFC 8040](https://github.com/clicon/clixon/issues/56) * HTTP `Location:` fields added in RESTCONF POST replies
103 lines
3.8 KiB
C
103 lines
3.8 KiB
C
/*
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*
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***** BEGIN LICENSE BLOCK *****
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Copyright (C) 2009-2019 Olof Hagsand
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This file is part of CLIXON.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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Alternatively, the contents of this file may be used under the terms of
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the GNU General Public License Version 3 or later (the "GPL"),
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in which case the provisions of the GPL are applicable instead
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of those above. If you wish to allow use of your version of this file only
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under the terms of the GPL, and not to allow others to
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use your version of this file under the terms of Apache License version 2,
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indicate your decision by deleting the provisions above and replace them with
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the notice and other provisions required by the GPL. If you do not delete
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the provisions above, a recipient may use your version of this file under
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the terms of any one of the Apache License version 2 or the GPL.
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***** END LICENSE BLOCK *****
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* Clixon XML XPATH 1.0 according to https://www.w3.org/TR/xpath-10
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* This file defines XPATH contexts using in traversing the XPATH parse tree.
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*/
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#ifndef _CLIXON_XPATH_CTX_H
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#define _CLIXON_XPATH_CTX_H
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/*
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* Types
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*/
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/*! XPATH expression type
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* An expression is evaluated to yield an object, which has one of the following four basic types:
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* node-set (an unordered collection of nodes without duplicates)
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* boolean (true or false)
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* number (a floating-point number)
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* string (a sequence of UCS characters)
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*/
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enum xp_objtype{
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XT_NODESET,
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XT_BOOL,
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XT_NUMBER,
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XT_STRING
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};
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/* Expression evaluation occurs with respect to a context. XSLT and XPointer specify how the context is
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* determined for XPath expressions used in XSLT and XPointer respectively. The context consists of:
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* a node (the context node)
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* a pair of non-zero positive integers (the context position and the context size)
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* a set of variable bindings
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* a function library
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* the set of namespace declarations in scope for the expression
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* For each node in the node-set to be filtered, the PredicateExpr is
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* evaluated with that node as the context node, with the number of nodes
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* in the node-set as the context size, and with the proximity position
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* of the node in the node-set with respect to the axis as the context
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* position; if PredicateExpr evaluates to true for that node, the node
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* is included in the new node-set; otherwise, it is not included.
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*/
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struct xp_ctx{
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enum xp_objtype xc_type;
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cxobj **xc_nodeset; /* if type XT_NODESET */
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size_t xc_size; /* Length of nodeset */
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int xc_bool; /* if xc_type XT_BOOL */
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double xc_number; /* if xc_type XT_NUMBER */
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char *xc_string; /* if xc_type XT_STRING */
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cxobj *xc_node; /* Node in nodeset XXX maybe not needed*/
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cxobj *xc_initial; /* RFC 7960 10.1.1 extension: for current() */
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int xc_descendant; /* // */
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/* NYI: a set of variable bindings, set of namespace declarations */
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};
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typedef struct xp_ctx xp_ctx;
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/*
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* Variables
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*/
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extern const map_str2int ctxmap[];
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/*
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* Prototypes
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*/
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int ctx_free(xp_ctx *xc);
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xp_ctx *ctx_dup(xp_ctx *xc);
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int ctx_nodeset_replace(xp_ctx *xc, cxobj **vec, size_t veclen);
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int ctx_print(cbuf *cb, int id, xp_ctx *xc, char *str);
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int ctx2boolean(xp_ctx *xc);
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int ctx2string(xp_ctx *xc, char **str0);
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int ctx2number(xp_ctx *xc, double *n0);
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#endif /* _CLIXON_XPATH_CTX_H */
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