mirror of
https://gitlab.gnome.org/GNOME/libxml2.git
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a5db68a39b
from TOM <ptittom@free.fr>, it also add namespace support for function and variables registration. Daniel
201 lines
7.5 KiB
C
201 lines
7.5 KiB
C
/*
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* xpath.c: internal interfaces for XML Path Language implementation
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* used to build new modules on top of XPath
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*
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* See COPYRIGHT for the status of this software
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*
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* Author: Daniel.Veillard@w3.org
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*/
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#ifndef __XML_XPATH_INTERNALS_H__
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#define __XML_XPATH_INTERNALS_H__
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#include <libxml/xpath.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/************************************************************************
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* *
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* Helpers *
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* *
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************************************************************************/
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#define CHECK_ERROR \
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if (ctxt->error != XPATH_EXPRESSION_OK) return
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#define CHECK_ERROR0 \
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if (ctxt->error != XPATH_EXPRESSION_OK) return(0)
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#define XP_ERROR(X) \
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{ xmlXPatherror(ctxt, __FILE__, __LINE__, X); \
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ctxt->error = (X); return; }
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#define XP_ERROR0(X) \
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{ xmlXPatherror(ctxt, __FILE__, __LINE__, X); \
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ctxt->error = (X); return(0); }
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#define CHECK_TYPE(typeval) \
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if ((ctxt->value == NULL) || (ctxt->value->type != typeval)) \
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XP_ERROR(XPATH_INVALID_TYPE)
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#define CHECK_ARITY(x) \
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if (nargs != (x)) \
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XP_ERROR(XPATH_INVALID_ARITY);
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#define CAST_TO_STRING \
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if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_STRING)) \
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xmlXPathStringFunction(ctxt, 1);
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#define CAST_TO_NUMBER \
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if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_NUMBER)) \
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xmlXPathNumberFunction(ctxt, 1);
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#define CAST_TO_BOOLEAN \
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if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_BOOLEAN)) \
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xmlXPathBooleanFunction(ctxt, 1);
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void xmlXPatherror (xmlXPathParserContextPtr ctxt,
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const char *file,
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int line,
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int no);
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void xmlXPathDebugDumpObject (FILE *output,
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xmlXPathObjectPtr cur,
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int depth);
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/**
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* Extending a context
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*/
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int xmlXPathRegisterFunc (xmlXPathContextPtr ctxt,
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const xmlChar *name,
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xmlXPathFunction f);
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int xmlXPathRegisterFuncNS (xmlXPathContextPtr ctxt,
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const xmlChar *name,
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const xmlChar *ns_uri,
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xmlXPathFunction f);
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int xmlXPathRegisterVariable (xmlXPathContextPtr ctxt,
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const xmlChar *name,
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xmlXPathObjectPtr value);
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int xmlXPathRegisterVariableNS (xmlXPathContextPtr ctxt,
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const xmlChar *name,
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const xmlChar *ns_uri,
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xmlXPathObjectPtr value);
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xmlXPathFunction xmlXPathFunctionLookup (xmlXPathContextPtr ctxt,
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const xmlChar *name);
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xmlXPathFunction xmlXPathFunctionLookupNS (xmlXPathContextPtr ctxt,
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const xmlChar *name,
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const xmlChar *ns_uri);
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void xmlXPathRegisteredFuncsCleanup(xmlXPathContextPtr ctxt);
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xmlXPathObjectPtr xmlXPathVariableLookup (xmlXPathContextPtr ctxt,
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const xmlChar *name);
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xmlXPathObjectPtr xmlXPathVariableLookupNS (xmlXPathContextPtr ctxt,
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const xmlChar *name,
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const xmlChar *ns_uri);
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void xmlXPathRegisteredVariablesCleanup(xmlXPathContextPtr ctxt);
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/**
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* Utilities to extend XPath
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*/
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xmlXPathParserContextPtr
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xmlXPathNewParserContext (const xmlChar *str,
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xmlXPathContextPtr ctxt);
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void xmlXPathFreeParserContext (xmlXPathParserContextPtr ctxt);
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xmlXPathObjectPtr valuePop (xmlXPathParserContextPtr ctxt);
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int valuePush (xmlXPathParserContextPtr ctxt,
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xmlXPathObjectPtr value);
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xmlXPathObjectPtr xmlXPathNewString (const xmlChar *val);
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xmlXPathObjectPtr xmlXPathNewCString (const char *val);
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xmlXPathObjectPtr xmlXPathNewFloat (double val);
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xmlXPathObjectPtr xmlXPathNewBoolean (int val);
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xmlXPathObjectPtr xmlXPathNewNodeSet (xmlNodePtr val);
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void xmlXPathNodeSetAdd (xmlNodeSetPtr cur,
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xmlNodePtr val);
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void xmlXPathIdFunction (xmlXPathParserContextPtr ctxt,
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int nargs);
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void xmlXPathRoot (xmlXPathParserContextPtr ctxt);
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void xmlXPathEvalExpr (xmlXPathParserContextPtr ctxt);
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xmlChar * xmlXPathParseName (xmlXPathParserContextPtr ctxt);
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/*
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* Debug
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*/
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#ifdef LIBXML_DEBUG_ENABLED
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double xmlXPathStringEvalNumber(const xmlChar *str);
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void xmlXPathDebugDumpObject(FILE *output, xmlXPathObjectPtr cur, int depth);
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#endif
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/*
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* Existing functions
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*/
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void xmlXPathInit(void);
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void xmlXPathStringFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathRegisterAllFunctions(xmlXPathContextPtr ctxt);
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xmlNodeSetPtr xmlXPathNodeSetCreate(xmlNodePtr val);
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void xmlXPathNodeSetAdd(xmlNodeSetPtr cur, xmlNodePtr val);
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xmlNodeSetPtr xmlXPathNodeSetMerge(xmlNodeSetPtr val1, xmlNodeSetPtr val2);
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void xmlXPathNodeSetDel(xmlNodeSetPtr cur, xmlNodePtr val);
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void xmlXPathNodeSetRemove(xmlNodeSetPtr cur, int val);
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void xmlXPathFreeNodeSet(xmlNodeSetPtr obj);
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xmlXPathObjectPtr xmlXPathNewNodeSet(xmlNodePtr val);
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xmlXPathObjectPtr xmlXPathNewNodeSetList(xmlNodeSetPtr val);
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xmlXPathObjectPtr xmlXPathWrapNodeSet(xmlNodeSetPtr val);
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void xmlXPathFreeNodeSetList(xmlXPathObjectPtr obj);
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xmlXPathObjectPtr xmlXPathNewFloat(double val);
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xmlXPathObjectPtr xmlXPathNewBoolean(int val);
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xmlXPathObjectPtr xmlXPathNewString(const xmlChar *val);
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xmlXPathObjectPtr xmlXPathNewCString(const char *val);
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void xmlXPathFreeObject(xmlXPathObjectPtr obj);
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xmlXPathContextPtr xmlXPathNewContext(xmlDocPtr doc);
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void xmlXPathFreeContext(xmlXPathContextPtr ctxt);
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int xmlXPathEqualValues(xmlXPathParserContextPtr ctxt);
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int xmlXPathCompareValues(xmlXPathParserContextPtr ctxt, int inf, int strict);
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void xmlXPathValueFlipSign(xmlXPathParserContextPtr ctxt);
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void xmlXPathAddValues(xmlXPathParserContextPtr ctxt);
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void xmlXPathSubValues(xmlXPathParserContextPtr ctxt);
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void xmlXPathMultValues(xmlXPathParserContextPtr ctxt);
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void xmlXPathDivValues(xmlXPathParserContextPtr ctxt);
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void xmlXPathModValues(xmlXPathParserContextPtr ctxt);
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/*
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* The official core of XPath functions
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*/
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void xmlXPathRoot(xmlXPathParserContextPtr ctxt);
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void xmlXPathLastFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathPositionFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathCountFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathIdFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathLocalNameFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathNamespaceURIFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathStringFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathStringLengthFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathConcatFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathContainsFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathStartsWithFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathSubstringFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathSubstringBeforeFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathSubstringAfterFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathNormalizeFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathTranslateFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathNotFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathTrueFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathFalseFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathLangFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathNumberFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathSumFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathFloorFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathCeilingFunction(xmlXPathParserContextPtr ctxt, int nargs);
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void xmlXPathRoundFunction(xmlXPathParserContextPtr ctxt, int nargs);
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#ifdef __cplusplus
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}
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#endif
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#endif /* ! __XML_XPATH_INTERNALS_H__ */
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