223 lines
5.3 KiB
C
223 lines
5.3 KiB
C
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/*
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* Summary: regular expressions handling
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* Description: basic API for libxml regular expressions handling used
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* for XML Schemas and validation.
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*
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* Copy: See Copyright for the status of this software.
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*
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* Author: Daniel Veillard
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*/
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#ifndef __XML_REGEXP_H__
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#define __XML_REGEXP_H__
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#include <libxml/xmlversion.h>
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#ifdef LIBXML_REGEXP_ENABLED
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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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* xmlRegexpPtr:
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*
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* A libxml regular expression, they can actually be far more complex
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* thank the POSIX regex expressions.
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*/
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typedef struct _xmlRegexp xmlRegexp;
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typedef xmlRegexp *xmlRegexpPtr;
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/**
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* xmlRegExecCtxtPtr:
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*
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* A libxml progressive regular expression evaluation context
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*/
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typedef struct _xmlRegExecCtxt xmlRegExecCtxt;
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typedef xmlRegExecCtxt *xmlRegExecCtxtPtr;
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#ifdef __cplusplus
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}
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#endif
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#include <libxml/tree.h>
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#include <libxml/dict.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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* The POSIX like API
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*/
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XMLPUBFUN xmlRegexpPtr XMLCALL
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xmlRegexpCompile (const xmlChar *regexp);
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XMLPUBFUN void XMLCALL xmlRegFreeRegexp(xmlRegexpPtr regexp);
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XMLPUBFUN int XMLCALL
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xmlRegexpExec (xmlRegexpPtr comp,
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const xmlChar *value);
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XMLPUBFUN void XMLCALL
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xmlRegexpPrint (FILE *output,
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xmlRegexpPtr regexp);
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XMLPUBFUN int XMLCALL
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xmlRegexpIsDeterminist(xmlRegexpPtr comp);
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/**
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* xmlRegExecCallbacks:
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* @exec: the regular expression context
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* @token: the current token string
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* @transdata: transition data
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* @inputdata: input data
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*
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* Callback function when doing a transition in the automata
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*/
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typedef void (*xmlRegExecCallbacks) (xmlRegExecCtxtPtr exec,
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const xmlChar *token,
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void *transdata,
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void *inputdata);
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/*
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* The progressive API
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*/
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XMLPUBFUN xmlRegExecCtxtPtr XMLCALL
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xmlRegNewExecCtxt (xmlRegexpPtr comp,
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xmlRegExecCallbacks callback,
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void *data);
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XMLPUBFUN void XMLCALL
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xmlRegFreeExecCtxt (xmlRegExecCtxtPtr exec);
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XMLPUBFUN int XMLCALL
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xmlRegExecPushString(xmlRegExecCtxtPtr exec,
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const xmlChar *value,
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void *data);
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XMLPUBFUN int XMLCALL
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xmlRegExecPushString2(xmlRegExecCtxtPtr exec,
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const xmlChar *value,
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const xmlChar *value2,
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void *data);
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XMLPUBFUN int XMLCALL
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xmlRegExecNextValues(xmlRegExecCtxtPtr exec,
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int *nbval,
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int *nbneg,
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xmlChar **values,
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int *terminal);
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XMLPUBFUN int XMLCALL
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xmlRegExecErrInfo (xmlRegExecCtxtPtr exec,
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const xmlChar **string,
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int *nbval,
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int *nbneg,
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xmlChar **values,
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int *terminal);
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#ifdef LIBXML_EXPR_ENABLED
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/*
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* Formal regular expression handling
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* Its goal is to do some formal work on content models
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*/
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/* expressions are used within a context */
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typedef struct _xmlExpCtxt xmlExpCtxt;
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typedef xmlExpCtxt *xmlExpCtxtPtr;
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XMLPUBFUN void XMLCALL
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xmlExpFreeCtxt (xmlExpCtxtPtr ctxt);
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XMLPUBFUN xmlExpCtxtPtr XMLCALL
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xmlExpNewCtxt (int maxNodes,
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xmlDictPtr dict);
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XMLPUBFUN int XMLCALL
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xmlExpCtxtNbNodes(xmlExpCtxtPtr ctxt);
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XMLPUBFUN int XMLCALL
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xmlExpCtxtNbCons(xmlExpCtxtPtr ctxt);
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/* Expressions are trees but the tree is opaque */
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typedef struct _xmlExpNode xmlExpNode;
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typedef xmlExpNode *xmlExpNodePtr;
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typedef enum {
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XML_EXP_EMPTY = 0,
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XML_EXP_FORBID = 1,
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XML_EXP_ATOM = 2,
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XML_EXP_SEQ = 3,
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XML_EXP_OR = 4,
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XML_EXP_COUNT = 5
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} xmlExpNodeType;
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/*
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* 2 core expressions shared by all for the empty language set
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* and for the set with just the empty token
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*/
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XMLPUBVAR xmlExpNodePtr forbiddenExp;
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XMLPUBVAR xmlExpNodePtr emptyExp;
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/*
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* Expressions are reference counted internally
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*/
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XMLPUBFUN void XMLCALL
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xmlExpFree (xmlExpCtxtPtr ctxt,
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xmlExpNodePtr expr);
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XMLPUBFUN void XMLCALL
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xmlExpRef (xmlExpNodePtr expr);
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/*
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* constructors can be either manual or from a string
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*/
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XMLPUBFUN xmlExpNodePtr XMLCALL
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xmlExpParse (xmlExpCtxtPtr ctxt,
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const char *expr);
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XMLPUBFUN xmlExpNodePtr XMLCALL
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xmlExpNewAtom (xmlExpCtxtPtr ctxt,
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const xmlChar *name,
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int len);
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XMLPUBFUN xmlExpNodePtr XMLCALL
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xmlExpNewOr (xmlExpCtxtPtr ctxt,
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xmlExpNodePtr left,
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xmlExpNodePtr right);
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XMLPUBFUN xmlExpNodePtr XMLCALL
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xmlExpNewSeq (xmlExpCtxtPtr ctxt,
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xmlExpNodePtr left,
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xmlExpNodePtr right);
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XMLPUBFUN xmlExpNodePtr XMLCALL
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xmlExpNewRange (xmlExpCtxtPtr ctxt,
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xmlExpNodePtr subset,
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int min,
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int max);
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/*
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* The really interesting APIs
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*/
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XMLPUBFUN int XMLCALL
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xmlExpIsNillable(xmlExpNodePtr expr);
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XMLPUBFUN int XMLCALL
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xmlExpMaxToken (xmlExpNodePtr expr);
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XMLPUBFUN int XMLCALL
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xmlExpGetLanguage(xmlExpCtxtPtr ctxt,
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xmlExpNodePtr expr,
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const xmlChar**langList,
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int len);
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XMLPUBFUN int XMLCALL
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xmlExpGetStart (xmlExpCtxtPtr ctxt,
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xmlExpNodePtr expr,
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const xmlChar**tokList,
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int len);
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XMLPUBFUN xmlExpNodePtr XMLCALL
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xmlExpStringDerive(xmlExpCtxtPtr ctxt,
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xmlExpNodePtr expr,
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const xmlChar *str,
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int len);
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XMLPUBFUN xmlExpNodePtr XMLCALL
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xmlExpExpDerive (xmlExpCtxtPtr ctxt,
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xmlExpNodePtr expr,
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xmlExpNodePtr sub);
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XMLPUBFUN int XMLCALL
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xmlExpSubsume (xmlExpCtxtPtr ctxt,
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xmlExpNodePtr expr,
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xmlExpNodePtr sub);
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XMLPUBFUN void XMLCALL
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xmlExpDump (xmlBufferPtr buf,
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xmlExpNodePtr expr);
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#endif /* LIBXML_EXPR_ENABLED */
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#ifdef __cplusplus
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}
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#endif
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#endif /* LIBXML_REGEXP_ENABLED */
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#endif /*__XML_REGEXP_H__ */
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