2569 lines
67 KiB
C
2569 lines
67 KiB
C
/*
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* pattern.c: Implemetation of the template match compilation and lookup
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*
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* Reference:
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* http://www.w3.org/TR/1999/REC-xslt-19991116
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*
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* See Copyright for the status of this software.
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*
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* daniel@veillard.com
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*/
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/*
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* TODO: handle pathological cases like *[*[@a="b"]]
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* TODO: detect [number] at compilation, optimize accordingly
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*/
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#define IN_LIBXSLT
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#include "libxslt.h"
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#include <string.h>
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#include <libxml/xmlmemory.h>
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#include <libxml/tree.h>
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#include <libxml/valid.h>
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#include <libxml/hash.h>
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#include <libxml/xmlerror.h>
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#include <libxml/parserInternals.h>
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#include <libxml/xpath.h>
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#include "xslt.h"
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#include "xsltInternals.h"
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#include "xsltutils.h"
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#include "imports.h"
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#include "templates.h"
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#include "keys.h"
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#include "pattern.h"
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#include "documents.h"
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#ifdef WITH_XSLT_DEBUG
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#define WITH_XSLT_DEBUG_PATTERN
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#endif
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/*
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* Types are private:
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*/
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typedef enum {
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XSLT_OP_END=0,
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XSLT_OP_ROOT,
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XSLT_OP_ELEM,
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XSLT_OP_ATTR,
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XSLT_OP_PARENT,
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XSLT_OP_ANCESTOR,
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XSLT_OP_ID,
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XSLT_OP_KEY,
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XSLT_OP_NS,
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XSLT_OP_ALL,
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XSLT_OP_PI,
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XSLT_OP_COMMENT,
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XSLT_OP_TEXT,
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XSLT_OP_NODE,
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XSLT_OP_PREDICATE
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} xsltOp;
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typedef enum {
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AXIS_CHILD=1,
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AXIS_ATTRIBUTE
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} xsltAxis;
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typedef struct _xsltStepState xsltStepState;
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typedef xsltStepState *xsltStepStatePtr;
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struct _xsltStepState {
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int step;
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xmlNodePtr node;
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};
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typedef struct _xsltStepStates xsltStepStates;
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typedef xsltStepStates *xsltStepStatesPtr;
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struct _xsltStepStates {
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int nbstates;
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int maxstates;
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xsltStepStatePtr states;
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};
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typedef struct _xsltStepOp xsltStepOp;
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typedef xsltStepOp *xsltStepOpPtr;
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struct _xsltStepOp {
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xsltOp op;
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xmlChar *value;
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xmlChar *value2;
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xmlChar *value3;
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xmlXPathCompExprPtr comp;
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/*
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* Optimisations for count
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*/
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int previousExtra;
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int indexExtra;
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int lenExtra;
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};
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struct _xsltCompMatch {
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struct _xsltCompMatch *next; /* siblings in the name hash */
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float priority; /* the priority */
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const xmlChar *pattern; /* the pattern */
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const xmlChar *mode; /* the mode */
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const xmlChar *modeURI; /* the mode URI */
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xsltTemplatePtr template; /* the associated template */
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xmlNodePtr node; /* the containing element */
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int direct;
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/* TODO fix the statically allocated size steps[] */
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int nbStep;
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int maxStep;
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xmlNsPtr *nsList; /* the namespaces in scope */
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int nsNr; /* the number of namespaces in scope */
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xsltStepOpPtr steps; /* ops for computation */
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};
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typedef struct _xsltParserContext xsltParserContext;
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typedef xsltParserContext *xsltParserContextPtr;
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struct _xsltParserContext {
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xsltStylesheetPtr style; /* the stylesheet */
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xsltTransformContextPtr ctxt; /* the transformation or NULL */
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const xmlChar *cur; /* the current char being parsed */
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const xmlChar *base; /* the full expression */
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xmlDocPtr doc; /* the source document */
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xmlNodePtr elem; /* the source element */
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int error; /* error code */
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xsltCompMatchPtr comp; /* the result */
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};
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/************************************************************************
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* *
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* Type functions *
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* *
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************************************************************************/
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/**
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* xsltNewCompMatch:
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*
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* Create a new XSLT CompMatch
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*
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* Returns the newly allocated xsltCompMatchPtr or NULL in case of error
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*/
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static xsltCompMatchPtr
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xsltNewCompMatch(void) {
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xsltCompMatchPtr cur;
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cur = (xsltCompMatchPtr) xmlMalloc(sizeof(xsltCompMatch));
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if (cur == NULL) {
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xsltTransformError(NULL, NULL, NULL,
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"xsltNewCompMatch : out of memory error\n");
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return(NULL);
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}
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memset(cur, 0, sizeof(xsltCompMatch));
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cur->maxStep = 10;
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cur->nbStep = 0;
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cur-> steps = (xsltStepOpPtr) xmlMalloc(sizeof(xsltStepOp) *
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cur->maxStep);
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if (cur->steps == NULL) {
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xsltTransformError(NULL, NULL, NULL,
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"xsltNewCompMatch : out of memory error\n");
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xmlFree(cur);
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return(NULL);
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}
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cur->nsNr = 0;
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cur->nsList = NULL;
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cur->direct = 0;
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return(cur);
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}
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/**
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* xsltFreeCompMatch:
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* @comp: an XSLT comp
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*
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* Free up the memory allocated by @comp
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*/
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static void
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xsltFreeCompMatch(xsltCompMatchPtr comp) {
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xsltStepOpPtr op;
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int i;
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if (comp == NULL)
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return;
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if (comp->pattern != NULL)
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xmlFree((xmlChar *)comp->pattern);
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if (comp->nsList != NULL)
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xmlFree(comp->nsList);
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for (i = 0;i < comp->nbStep;i++) {
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op = &comp->steps[i];
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if (op->value != NULL)
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xmlFree(op->value);
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if (op->value2 != NULL)
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xmlFree(op->value2);
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if (op->value3 != NULL)
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xmlFree(op->value3);
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if (op->comp != NULL)
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xmlXPathFreeCompExpr(op->comp);
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}
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xmlFree(comp->steps);
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memset(comp, -1, sizeof(xsltCompMatch));
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xmlFree(comp);
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}
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/**
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* xsltFreeCompMatchList:
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* @comp: an XSLT comp list
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*
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* Free up the memory allocated by all the elements of @comp
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*/
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void
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xsltFreeCompMatchList(xsltCompMatchPtr comp) {
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xsltCompMatchPtr cur;
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while (comp != NULL) {
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cur = comp;
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comp = comp->next;
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xsltFreeCompMatch(cur);
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}
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}
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static void
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xsltFreeCompMatchListEntry(void *payload,
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const xmlChar *name ATTRIBUTE_UNUSED) {
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xsltFreeCompMatchList((xsltCompMatchPtr) payload);
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}
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/**
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* xsltNormalizeCompSteps:
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* @payload: pointer to template hash table entry
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* @data: pointer to the stylesheet
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* @name: template match name
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*
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* This is a hashtable scanner function to normalize the compiled
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* steps of an imported stylesheet.
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*/
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void xsltNormalizeCompSteps(void *payload,
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void *data, const xmlChar *name ATTRIBUTE_UNUSED) {
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xsltCompMatchPtr comp = payload;
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xsltStylesheetPtr style = data;
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int ix;
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for (ix = 0; ix < comp->nbStep; ix++) {
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comp->steps[ix].previousExtra += style->extrasNr;
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comp->steps[ix].indexExtra += style->extrasNr;
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comp->steps[ix].lenExtra += style->extrasNr;
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}
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}
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/**
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* xsltNewParserContext:
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* @style: the stylesheet
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* @ctxt: the transformation context, if done at run-time
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*
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* Create a new XSLT ParserContext
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*
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* Returns the newly allocated xsltParserContextPtr or NULL in case of error
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*/
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static xsltParserContextPtr
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xsltNewParserContext(xsltStylesheetPtr style, xsltTransformContextPtr ctxt) {
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xsltParserContextPtr cur;
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cur = (xsltParserContextPtr) xmlMalloc(sizeof(xsltParserContext));
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if (cur == NULL) {
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xsltTransformError(NULL, NULL, NULL,
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"xsltNewParserContext : malloc failed\n");
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return(NULL);
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}
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memset(cur, 0, sizeof(xsltParserContext));
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cur->style = style;
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cur->ctxt = ctxt;
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return(cur);
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}
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/**
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* xsltFreeParserContext:
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* @ctxt: an XSLT parser context
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*
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* Free up the memory allocated by @ctxt
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*/
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static void
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xsltFreeParserContext(xsltParserContextPtr ctxt) {
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if (ctxt == NULL)
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return;
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memset(ctxt, -1, sizeof(xsltParserContext));
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xmlFree(ctxt);
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}
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/**
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* xsltCompMatchAdd:
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* @comp: the compiled match expression
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* @op: an op
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* @value: the first value
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* @value2: the second value
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* @novar: flag to set XML_XPATH_NOVAR
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*
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* Add an step to an XSLT Compiled Match
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*
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* Returns -1 in case of failure, 0 otherwise.
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*/
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static int
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xsltCompMatchAdd(xsltParserContextPtr ctxt, xsltCompMatchPtr comp,
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xsltOp op, xmlChar * value, xmlChar * value2, int novar)
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{
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if (comp->nbStep >= comp->maxStep) {
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xsltStepOpPtr tmp;
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tmp = (xsltStepOpPtr) xmlRealloc(comp->steps, comp->maxStep * 2 *
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sizeof(xsltStepOp));
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if (tmp == NULL) {
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xsltGenericError(xsltGenericErrorContext,
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"xsltCompMatchAdd: memory re-allocation failure.\n");
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if (ctxt->style != NULL)
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ctxt->style->errors++;
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if (value)
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xmlFree(value);
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if (value2)
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xmlFree(value2);
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return (-1);
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}
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comp->maxStep *= 2;
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comp->steps = tmp;
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}
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comp->steps[comp->nbStep].op = op;
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comp->steps[comp->nbStep].value = value;
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comp->steps[comp->nbStep].value2 = value2;
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comp->steps[comp->nbStep].value3 = NULL;
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comp->steps[comp->nbStep].comp = NULL;
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if (ctxt->ctxt != NULL) {
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comp->steps[comp->nbStep].previousExtra =
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xsltAllocateExtraCtxt(ctxt->ctxt);
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comp->steps[comp->nbStep].indexExtra =
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xsltAllocateExtraCtxt(ctxt->ctxt);
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comp->steps[comp->nbStep].lenExtra =
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xsltAllocateExtraCtxt(ctxt->ctxt);
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} else {
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comp->steps[comp->nbStep].previousExtra =
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xsltAllocateExtra(ctxt->style);
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comp->steps[comp->nbStep].indexExtra =
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xsltAllocateExtra(ctxt->style);
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comp->steps[comp->nbStep].lenExtra =
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xsltAllocateExtra(ctxt->style);
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}
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if (op == XSLT_OP_PREDICATE) {
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int flags = 0;
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#ifdef XML_XPATH_NOVAR
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if (novar != 0)
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flags = XML_XPATH_NOVAR;
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#endif
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comp->steps[comp->nbStep].comp = xsltXPathCompileFlags(ctxt->style,
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value, flags);
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if (comp->steps[comp->nbStep].comp == NULL) {
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xsltTransformError(NULL, ctxt->style, ctxt->elem,
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"Failed to compile predicate\n");
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if (ctxt->style != NULL)
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ctxt->style->errors++;
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}
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}
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comp->nbStep++;
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return (0);
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}
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/**
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* xsltSwapTopCompMatch:
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* @comp: the compiled match expression
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*
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* reverse the two top steps.
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*/
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static void
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xsltSwapTopCompMatch(xsltCompMatchPtr comp) {
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int i;
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int j = comp->nbStep - 1;
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if (j > 0) {
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register xmlChar *tmp;
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register xsltOp op;
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register xmlXPathCompExprPtr expr;
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register int t;
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i = j - 1;
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tmp = comp->steps[i].value;
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comp->steps[i].value = comp->steps[j].value;
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comp->steps[j].value = tmp;
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tmp = comp->steps[i].value2;
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comp->steps[i].value2 = comp->steps[j].value2;
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comp->steps[j].value2 = tmp;
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tmp = comp->steps[i].value3;
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comp->steps[i].value3 = comp->steps[j].value3;
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comp->steps[j].value3 = tmp;
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op = comp->steps[i].op;
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comp->steps[i].op = comp->steps[j].op;
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comp->steps[j].op = op;
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expr = comp->steps[i].comp;
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comp->steps[i].comp = comp->steps[j].comp;
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comp->steps[j].comp = expr;
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t = comp->steps[i].previousExtra;
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comp->steps[i].previousExtra = comp->steps[j].previousExtra;
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comp->steps[j].previousExtra = t;
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t = comp->steps[i].indexExtra;
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comp->steps[i].indexExtra = comp->steps[j].indexExtra;
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comp->steps[j].indexExtra = t;
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t = comp->steps[i].lenExtra;
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comp->steps[i].lenExtra = comp->steps[j].lenExtra;
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comp->steps[j].lenExtra = t;
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}
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}
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/**
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* xsltReverseCompMatch:
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* @ctxt: the parser context
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* @comp: the compiled match expression
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*
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* reverse all the stack of expressions
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*/
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static void
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xsltReverseCompMatch(xsltParserContextPtr ctxt, xsltCompMatchPtr comp) {
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int i = 0;
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int j = comp->nbStep - 1;
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while (j > i) {
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register xmlChar *tmp;
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register xsltOp op;
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register xmlXPathCompExprPtr expr;
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register int t;
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tmp = comp->steps[i].value;
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comp->steps[i].value = comp->steps[j].value;
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comp->steps[j].value = tmp;
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tmp = comp->steps[i].value2;
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comp->steps[i].value2 = comp->steps[j].value2;
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comp->steps[j].value2 = tmp;
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tmp = comp->steps[i].value3;
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comp->steps[i].value3 = comp->steps[j].value3;
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comp->steps[j].value3 = tmp;
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op = comp->steps[i].op;
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comp->steps[i].op = comp->steps[j].op;
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comp->steps[j].op = op;
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expr = comp->steps[i].comp;
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comp->steps[i].comp = comp->steps[j].comp;
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comp->steps[j].comp = expr;
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t = comp->steps[i].previousExtra;
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comp->steps[i].previousExtra = comp->steps[j].previousExtra;
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comp->steps[j].previousExtra = t;
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t = comp->steps[i].indexExtra;
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comp->steps[i].indexExtra = comp->steps[j].indexExtra;
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comp->steps[j].indexExtra = t;
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t = comp->steps[i].lenExtra;
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comp->steps[i].lenExtra = comp->steps[j].lenExtra;
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comp->steps[j].lenExtra = t;
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j--;
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i++;
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}
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xsltCompMatchAdd(ctxt, comp, XSLT_OP_END, NULL, NULL, 0);
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/*
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* Detect consecutive XSLT_OP_PREDICATE indicating a direct matching
|
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* should be done.
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*/
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for (i = 0;i < comp->nbStep - 1;i++) {
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if ((comp->steps[i].op == XSLT_OP_PREDICATE) &&
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(comp->steps[i + 1].op == XSLT_OP_PREDICATE)) {
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comp->direct = 1;
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if (comp->pattern[0] != '/') {
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xmlChar *query;
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query = xmlStrdup((const xmlChar *)"//");
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query = xmlStrcat(query, comp->pattern);
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|
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xmlFree((xmlChar *) comp->pattern);
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comp->pattern = query;
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}
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break;
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}
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}
|
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}
|
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|
|
/************************************************************************
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|
* *
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* The interpreter for the precompiled patterns *
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* *
|
|
************************************************************************/
|
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|
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static int
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xsltPatPushState(xsltTransformContextPtr ctxt, xsltStepStates *states,
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int step, xmlNodePtr node) {
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if ((states->states == NULL) || (states->maxstates <= 0)) {
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states->maxstates = 4;
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states->nbstates = 0;
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states->states = xmlMalloc(4 * sizeof(xsltStepState));
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}
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else if (states->maxstates <= states->nbstates) {
|
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xsltStepState *tmp;
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|
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tmp = (xsltStepStatePtr) xmlRealloc(states->states,
|
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2 * states->maxstates * sizeof(xsltStepState));
|
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if (tmp == NULL) {
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xsltGenericError(xsltGenericErrorContext,
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"xsltPatPushState: memory re-allocation failure.\n");
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ctxt->state = XSLT_STATE_STOPPED;
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return(-1);
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}
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states->states = tmp;
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states->maxstates *= 2;
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}
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states->states[states->nbstates].step = step;
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states->states[states->nbstates++].node = node;
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#if 0
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fprintf(stderr, "Push: %d, %s\n", step, node->name);
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#endif
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return(0);
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}
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|
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static void
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xmlXPathFreeObjectWrapper(void *obj) {
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xmlXPathFreeObject((xmlXPathObjectPtr) obj);
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}
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|
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/**
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|
* xsltTestCompMatchDirect:
|
|
* @ctxt: a XSLT process context
|
|
* @comp: the precompiled pattern
|
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* @node: a node
|
|
* @nsList: the namespaces in scope
|
|
* @nsNr: the number of namespaces in scope
|
|
*
|
|
* Test whether the node matches the pattern, do a direct evalutation
|
|
* and not a step by step evaluation.
|
|
*
|
|
* Returns 1 if it matches, 0 if it doesn't and -1 in case of failure
|
|
*/
|
|
static int
|
|
xsltTestCompMatchDirect(xsltTransformContextPtr ctxt, xsltCompMatchPtr comp,
|
|
xmlNodePtr node, xmlNsPtr *nsList, int nsNr) {
|
|
xsltStepOpPtr sel = NULL;
|
|
xmlDocPtr prevdoc;
|
|
xmlDocPtr doc;
|
|
xmlXPathObjectPtr list;
|
|
int ix, j;
|
|
int nocache = 0;
|
|
int isRVT;
|
|
|
|
doc = node->doc;
|
|
if (XSLT_IS_RES_TREE_FRAG(doc))
|
|
isRVT = 1;
|
|
else
|
|
isRVT = 0;
|
|
sel = &comp->steps[0]; /* store extra in first step arbitrarily */
|
|
|
|
prevdoc = (xmlDocPtr)
|
|
XSLT_RUNTIME_EXTRA(ctxt, sel->previousExtra, ptr);
|
|
ix = XSLT_RUNTIME_EXTRA(ctxt, sel->indexExtra, ival);
|
|
list = (xmlXPathObjectPtr)
|
|
XSLT_RUNTIME_EXTRA_LST(ctxt, sel->lenExtra);
|
|
|
|
if ((list == NULL) || (prevdoc != doc)) {
|
|
xmlXPathObjectPtr newlist;
|
|
xmlNodePtr parent = node->parent;
|
|
xmlDocPtr olddoc;
|
|
xmlNodePtr oldnode;
|
|
int oldNsNr, oldContextSize, oldProximityPosition;
|
|
xmlNsPtr *oldNamespaces;
|
|
|
|
oldnode = ctxt->xpathCtxt->node;
|
|
olddoc = ctxt->xpathCtxt->doc;
|
|
oldNsNr = ctxt->xpathCtxt->nsNr;
|
|
oldNamespaces = ctxt->xpathCtxt->namespaces;
|
|
oldContextSize = ctxt->xpathCtxt->contextSize;
|
|
oldProximityPosition = ctxt->xpathCtxt->proximityPosition;
|
|
ctxt->xpathCtxt->node = node;
|
|
ctxt->xpathCtxt->doc = doc;
|
|
ctxt->xpathCtxt->namespaces = nsList;
|
|
ctxt->xpathCtxt->nsNr = nsNr;
|
|
newlist = xmlXPathEval(comp->pattern, ctxt->xpathCtxt);
|
|
ctxt->xpathCtxt->node = oldnode;
|
|
ctxt->xpathCtxt->doc = olddoc;
|
|
ctxt->xpathCtxt->namespaces = oldNamespaces;
|
|
ctxt->xpathCtxt->nsNr = oldNsNr;
|
|
ctxt->xpathCtxt->contextSize = oldContextSize;
|
|
ctxt->xpathCtxt->proximityPosition = oldProximityPosition;
|
|
if (newlist == NULL)
|
|
return(-1);
|
|
if (newlist->type != XPATH_NODESET) {
|
|
xmlXPathFreeObject(newlist);
|
|
return(-1);
|
|
}
|
|
ix = 0;
|
|
|
|
if ((parent == NULL) || (node->doc == NULL) || isRVT)
|
|
nocache = 1;
|
|
|
|
if (nocache == 0) {
|
|
if (list != NULL)
|
|
xmlXPathFreeObject(list);
|
|
list = newlist;
|
|
|
|
XSLT_RUNTIME_EXTRA_LST(ctxt, sel->lenExtra) =
|
|
(void *) list;
|
|
XSLT_RUNTIME_EXTRA(ctxt, sel->previousExtra, ptr) =
|
|
(void *) doc;
|
|
XSLT_RUNTIME_EXTRA(ctxt, sel->indexExtra, ival) =
|
|
0;
|
|
XSLT_RUNTIME_EXTRA_FREE(ctxt, sel->lenExtra) =
|
|
xmlXPathFreeObjectWrapper;
|
|
} else
|
|
list = newlist;
|
|
}
|
|
if ((list->nodesetval == NULL) ||
|
|
(list->nodesetval->nodeNr <= 0)) {
|
|
if (nocache == 1)
|
|
xmlXPathFreeObject(list);
|
|
return(0);
|
|
}
|
|
/* TODO: store the index and use it for the scan */
|
|
if (ix == 0) {
|
|
for (j = 0;j < list->nodesetval->nodeNr;j++) {
|
|
if (list->nodesetval->nodeTab[j] == node) {
|
|
if (nocache == 1)
|
|
xmlXPathFreeObject(list);
|
|
return(1);
|
|
}
|
|
}
|
|
} else {
|
|
}
|
|
if (nocache == 1)
|
|
xmlXPathFreeObject(list);
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* xsltTestStepMatch:
|
|
* @ctxt: a XSLT process context
|
|
* @node: a node
|
|
* @step: the step
|
|
*
|
|
* Test whether the node matches the step.
|
|
*
|
|
* Returns 1 if it matches, 0 if it doesn't and -1 in case of failure
|
|
*/
|
|
static int
|
|
xsltTestStepMatch(xsltTransformContextPtr ctxt, xmlNodePtr node,
|
|
xsltStepOpPtr step) {
|
|
switch (step->op) {
|
|
case XSLT_OP_ROOT:
|
|
if ((node->type == XML_DOCUMENT_NODE) ||
|
|
#ifdef LIBXML_DOCB_ENABLED
|
|
(node->type == XML_DOCB_DOCUMENT_NODE) ||
|
|
#endif
|
|
(node->type == XML_HTML_DOCUMENT_NODE))
|
|
return(1);
|
|
if ((node->type == XML_ELEMENT_NODE) && (node->name[0] == ' '))
|
|
return(1);
|
|
return(0);
|
|
case XSLT_OP_ELEM:
|
|
if (node->type != XML_ELEMENT_NODE)
|
|
return(0);
|
|
if (step->value == NULL)
|
|
return(1);
|
|
if (step->value[0] != node->name[0])
|
|
return(0);
|
|
if (!xmlStrEqual(step->value, node->name))
|
|
return(0);
|
|
|
|
/* Namespace test */
|
|
if (node->ns == NULL) {
|
|
if (step->value2 != NULL)
|
|
return(0);
|
|
} else if (node->ns->href != NULL) {
|
|
if (step->value2 == NULL)
|
|
return(0);
|
|
if (!xmlStrEqual(step->value2, node->ns->href))
|
|
return(0);
|
|
}
|
|
return(1);
|
|
case XSLT_OP_ATTR:
|
|
if (node->type != XML_ATTRIBUTE_NODE)
|
|
return(0);
|
|
if (step->value != NULL) {
|
|
if (step->value[0] != node->name[0])
|
|
return(0);
|
|
if (!xmlStrEqual(step->value, node->name))
|
|
return(0);
|
|
}
|
|
/* Namespace test */
|
|
if (node->ns == NULL) {
|
|
if (step->value2 != NULL)
|
|
return(0);
|
|
} else if (step->value2 != NULL) {
|
|
if (!xmlStrEqual(step->value2, node->ns->href))
|
|
return(0);
|
|
}
|
|
return(1);
|
|
case XSLT_OP_ID: {
|
|
/* TODO Handle IDs decently, must be done differently */
|
|
xmlAttrPtr id;
|
|
|
|
if (node->type != XML_ELEMENT_NODE)
|
|
return(0);
|
|
|
|
id = xmlGetID(node->doc, step->value);
|
|
if ((id == NULL) || (id->parent != node))
|
|
return(0);
|
|
break;
|
|
}
|
|
case XSLT_OP_KEY: {
|
|
xmlNodeSetPtr list;
|
|
int indx;
|
|
|
|
list = xsltGetKey(ctxt, step->value,
|
|
step->value3, step->value2);
|
|
if (list == NULL)
|
|
return(0);
|
|
for (indx = 0;indx < list->nodeNr;indx++)
|
|
if (list->nodeTab[indx] == node)
|
|
break;
|
|
if (indx >= list->nodeNr)
|
|
return(0);
|
|
break;
|
|
}
|
|
case XSLT_OP_NS:
|
|
if (node->type != XML_ELEMENT_NODE)
|
|
return(0);
|
|
if (node->ns == NULL) {
|
|
if (step->value != NULL)
|
|
return(0);
|
|
} else if (node->ns->href != NULL) {
|
|
if (step->value == NULL)
|
|
return(0);
|
|
if (!xmlStrEqual(step->value, node->ns->href))
|
|
return(0);
|
|
}
|
|
break;
|
|
case XSLT_OP_ALL:
|
|
if (node->type != XML_ELEMENT_NODE)
|
|
return(0);
|
|
break;
|
|
case XSLT_OP_PI:
|
|
if (node->type != XML_PI_NODE)
|
|
return(0);
|
|
if (step->value != NULL) {
|
|
if (!xmlStrEqual(step->value, node->name))
|
|
return(0);
|
|
}
|
|
break;
|
|
case XSLT_OP_COMMENT:
|
|
if (node->type != XML_COMMENT_NODE)
|
|
return(0);
|
|
break;
|
|
case XSLT_OP_TEXT:
|
|
if ((node->type != XML_TEXT_NODE) &&
|
|
(node->type != XML_CDATA_SECTION_NODE))
|
|
return(0);
|
|
break;
|
|
case XSLT_OP_NODE:
|
|
switch (node->type) {
|
|
case XML_ELEMENT_NODE:
|
|
case XML_CDATA_SECTION_NODE:
|
|
case XML_PI_NODE:
|
|
case XML_COMMENT_NODE:
|
|
case XML_TEXT_NODE:
|
|
break;
|
|
default:
|
|
return(0);
|
|
}
|
|
break;
|
|
default:
|
|
xsltTransformError(ctxt, NULL, node,
|
|
"xsltTestStepMatch: unexpected step op %d\n",
|
|
step->op);
|
|
return(-1);
|
|
}
|
|
|
|
return(1);
|
|
}
|
|
|
|
/**
|
|
* xsltTestPredicateMatch:
|
|
* @ctxt: a XSLT process context
|
|
* @comp: the precompiled pattern
|
|
* @node: a node
|
|
* @step: the predicate step
|
|
* @sel: the previous step
|
|
*
|
|
* Test whether the node matches the predicate
|
|
*
|
|
* Returns 1 if it matches, 0 if it doesn't and -1 in case of failure
|
|
*/
|
|
static int
|
|
xsltTestPredicateMatch(xsltTransformContextPtr ctxt, xsltCompMatchPtr comp,
|
|
xmlNodePtr node, xsltStepOpPtr step,
|
|
xsltStepOpPtr sel) {
|
|
xmlNodePtr oldNode;
|
|
xmlDocPtr doc;
|
|
int oldCS, oldCP;
|
|
int pos = 0, len = 0;
|
|
int isRVT;
|
|
int match;
|
|
|
|
if (step->value == NULL)
|
|
return(0);
|
|
if (step->comp == NULL)
|
|
return(0);
|
|
if (sel == NULL)
|
|
return(0);
|
|
|
|
doc = node->doc;
|
|
if (XSLT_IS_RES_TREE_FRAG(doc))
|
|
isRVT = 1;
|
|
else
|
|
isRVT = 0;
|
|
|
|
/*
|
|
* Recompute contextSize and proximityPosition.
|
|
*
|
|
* This could be improved in the following ways:
|
|
*
|
|
* - Skip recomputation if predicates don't use position() or last()
|
|
* - Keep data for multiple parents. This would require a hash table
|
|
* or an unused member in xmlNode.
|
|
* - Store node test results in a bitmap to avoid computing them twice.
|
|
*/
|
|
oldCS = ctxt->xpathCtxt->contextSize;
|
|
oldCP = ctxt->xpathCtxt->proximityPosition;
|
|
{
|
|
xmlNodePtr previous;
|
|
int nocache = 0;
|
|
|
|
previous = (xmlNodePtr)
|
|
XSLT_RUNTIME_EXTRA(ctxt, sel->previousExtra, ptr);
|
|
if ((previous != NULL) &&
|
|
(previous->parent == node->parent)) {
|
|
/*
|
|
* just walk back to adjust the index
|
|
*/
|
|
int indx = 0;
|
|
xmlNodePtr sibling = node;
|
|
|
|
while (sibling != NULL) {
|
|
if (sibling == previous)
|
|
break;
|
|
if (xsltTestStepMatch(ctxt, sibling, sel))
|
|
indx++;
|
|
sibling = sibling->prev;
|
|
}
|
|
if (sibling == NULL) {
|
|
/* hum going backward in document order ... */
|
|
indx = 0;
|
|
sibling = node;
|
|
while (sibling != NULL) {
|
|
if (sibling == previous)
|
|
break;
|
|
if (xsltTestStepMatch(ctxt, sibling, sel))
|
|
indx--;
|
|
sibling = sibling->next;
|
|
}
|
|
}
|
|
if (sibling != NULL) {
|
|
pos = XSLT_RUNTIME_EXTRA(ctxt, sel->indexExtra, ival) + indx;
|
|
/*
|
|
* If the node is in a Value Tree we need to
|
|
* save len, but cannot cache the node!
|
|
* (bugs 153137 and 158840)
|
|
*/
|
|
if (node->doc != NULL) {
|
|
len = XSLT_RUNTIME_EXTRA(ctxt, sel->lenExtra, ival);
|
|
if (!isRVT) {
|
|
XSLT_RUNTIME_EXTRA(ctxt,
|
|
sel->previousExtra, ptr) = node;
|
|
XSLT_RUNTIME_EXTRA(ctxt, sel->indexExtra, ival) = pos;
|
|
}
|
|
}
|
|
} else
|
|
pos = 0;
|
|
} else {
|
|
/*
|
|
* recompute the index
|
|
*/
|
|
xmlNodePtr parent = node->parent;
|
|
xmlNodePtr siblings = NULL;
|
|
|
|
if (parent) siblings = parent->children;
|
|
|
|
while (siblings != NULL) {
|
|
if (siblings == node) {
|
|
len++;
|
|
pos = len;
|
|
} else if (xsltTestStepMatch(ctxt, siblings, sel)) {
|
|
len++;
|
|
}
|
|
siblings = siblings->next;
|
|
}
|
|
if ((parent == NULL) || (node->doc == NULL))
|
|
nocache = 1;
|
|
else {
|
|
while (parent->parent != NULL)
|
|
parent = parent->parent;
|
|
if (((parent->type != XML_DOCUMENT_NODE) &&
|
|
(parent->type != XML_HTML_DOCUMENT_NODE)) ||
|
|
(parent != (xmlNodePtr) node->doc))
|
|
nocache = 1;
|
|
}
|
|
}
|
|
if (pos != 0) {
|
|
ctxt->xpathCtxt->contextSize = len;
|
|
ctxt->xpathCtxt->proximityPosition = pos;
|
|
/*
|
|
* If the node is in a Value Tree we cannot
|
|
* cache it !
|
|
*/
|
|
if ((!isRVT) && (node->doc != NULL) &&
|
|
(nocache == 0)) {
|
|
XSLT_RUNTIME_EXTRA(ctxt, sel->previousExtra, ptr) = node;
|
|
XSLT_RUNTIME_EXTRA(ctxt, sel->indexExtra, ival) = pos;
|
|
XSLT_RUNTIME_EXTRA(ctxt, sel->lenExtra, ival) = len;
|
|
}
|
|
}
|
|
}
|
|
|
|
oldNode = ctxt->node;
|
|
ctxt->node = node;
|
|
|
|
match = xsltEvalXPathPredicate(ctxt, step->comp, comp->nsList, comp->nsNr);
|
|
|
|
if (pos != 0) {
|
|
ctxt->xpathCtxt->contextSize = oldCS;
|
|
ctxt->xpathCtxt->proximityPosition = oldCP;
|
|
}
|
|
ctxt->node = oldNode;
|
|
|
|
return match;
|
|
}
|
|
|
|
/**
|
|
* xsltTestCompMatch:
|
|
* @ctxt: a XSLT process context
|
|
* @comp: the precompiled pattern
|
|
* @node: a node
|
|
* @mode: the mode name or NULL
|
|
* @modeURI: the mode URI or NULL
|
|
*
|
|
* Test whether the node matches the pattern
|
|
*
|
|
* Returns 1 if it matches, 0 if it doesn't and -1 in case of failure
|
|
*/
|
|
static int
|
|
xsltTestCompMatch(xsltTransformContextPtr ctxt, xsltCompMatchPtr comp,
|
|
xmlNodePtr matchNode, const xmlChar *mode,
|
|
const xmlChar *modeURI) {
|
|
int i;
|
|
int found = 0;
|
|
xmlNodePtr node = matchNode;
|
|
xmlNodePtr oldInst;
|
|
xsltStepOpPtr step, sel = NULL;
|
|
xsltStepStates states = {0, 0, NULL}; /* // may require backtrack */
|
|
|
|
if ((comp == NULL) || (node == NULL) || (ctxt == NULL)) {
|
|
xsltTransformError(ctxt, NULL, node,
|
|
"xsltTestCompMatch: null arg\n");
|
|
return(-1);
|
|
}
|
|
if (mode != NULL) {
|
|
if (comp->mode == NULL)
|
|
return(0);
|
|
/*
|
|
* both mode strings must be interned on the stylesheet dictionary
|
|
*/
|
|
if (comp->mode != mode)
|
|
return(0);
|
|
} else {
|
|
if (comp->mode != NULL)
|
|
return(0);
|
|
}
|
|
if (modeURI != NULL) {
|
|
if (comp->modeURI == NULL)
|
|
return(0);
|
|
/*
|
|
* both modeURI strings must be interned on the stylesheet dictionary
|
|
*/
|
|
if (comp->modeURI != modeURI)
|
|
return(0);
|
|
} else {
|
|
if (comp->modeURI != NULL)
|
|
return(0);
|
|
}
|
|
|
|
/* Some XPath functions rely on inst being set correctly. */
|
|
oldInst = ctxt->inst;
|
|
ctxt->inst = comp->node;
|
|
|
|
i = 0;
|
|
restart:
|
|
for (;i < comp->nbStep;i++) {
|
|
step = &comp->steps[i];
|
|
if (step->op != XSLT_OP_PREDICATE)
|
|
sel = step;
|
|
switch (step->op) {
|
|
case XSLT_OP_END:
|
|
goto found;
|
|
case XSLT_OP_PARENT:
|
|
if ((node->type == XML_DOCUMENT_NODE) ||
|
|
(node->type == XML_HTML_DOCUMENT_NODE) ||
|
|
#ifdef LIBXML_DOCB_ENABLED
|
|
(node->type == XML_DOCB_DOCUMENT_NODE) ||
|
|
#endif
|
|
(node->type == XML_NAMESPACE_DECL))
|
|
goto rollback;
|
|
node = node->parent;
|
|
if (node == NULL)
|
|
goto rollback;
|
|
if (step->value == NULL)
|
|
continue;
|
|
if (step->value[0] != node->name[0])
|
|
goto rollback;
|
|
if (!xmlStrEqual(step->value, node->name))
|
|
goto rollback;
|
|
/* Namespace test */
|
|
if (node->ns == NULL) {
|
|
if (step->value2 != NULL)
|
|
goto rollback;
|
|
} else if (node->ns->href != NULL) {
|
|
if (step->value2 == NULL)
|
|
goto rollback;
|
|
if (!xmlStrEqual(step->value2, node->ns->href))
|
|
goto rollback;
|
|
}
|
|
continue;
|
|
case XSLT_OP_ANCESTOR:
|
|
/* TODO: implement coalescing of ANCESTOR/NODE ops */
|
|
if (step->value == NULL) {
|
|
step = &comp->steps[i+1];
|
|
if (step->op == XSLT_OP_ROOT)
|
|
goto found;
|
|
/* added NS, ID and KEY as a result of bug 168208 */
|
|
if ((step->op != XSLT_OP_ELEM) &&
|
|
(step->op != XSLT_OP_ALL) &&
|
|
(step->op != XSLT_OP_NS) &&
|
|
(step->op != XSLT_OP_ID) &&
|
|
(step->op != XSLT_OP_KEY))
|
|
goto rollback;
|
|
}
|
|
if (node == NULL)
|
|
goto rollback;
|
|
if ((node->type == XML_DOCUMENT_NODE) ||
|
|
(node->type == XML_HTML_DOCUMENT_NODE) ||
|
|
#ifdef LIBXML_DOCB_ENABLED
|
|
(node->type == XML_DOCB_DOCUMENT_NODE) ||
|
|
#endif
|
|
(node->type == XML_NAMESPACE_DECL))
|
|
goto rollback;
|
|
node = node->parent;
|
|
if ((step->op != XSLT_OP_ELEM) && step->op != XSLT_OP_ALL) {
|
|
xsltPatPushState(ctxt, &states, i, node);
|
|
continue;
|
|
}
|
|
i++;
|
|
sel = step;
|
|
if (step->value == NULL) {
|
|
xsltPatPushState(ctxt, &states, i - 1, node);
|
|
continue;
|
|
}
|
|
while (node != NULL) {
|
|
if ((node->type == XML_ELEMENT_NODE) &&
|
|
(step->value[0] == node->name[0]) &&
|
|
(xmlStrEqual(step->value, node->name))) {
|
|
/* Namespace test */
|
|
if (node->ns == NULL) {
|
|
if (step->value2 == NULL)
|
|
break;
|
|
} else if (node->ns->href != NULL) {
|
|
if ((step->value2 != NULL) &&
|
|
(xmlStrEqual(step->value2, node->ns->href)))
|
|
break;
|
|
}
|
|
}
|
|
node = node->parent;
|
|
}
|
|
if (node == NULL)
|
|
goto rollback;
|
|
xsltPatPushState(ctxt, &states, i - 1, node);
|
|
continue;
|
|
case XSLT_OP_PREDICATE: {
|
|
/*
|
|
* When there is cascading XSLT_OP_PREDICATE or a predicate
|
|
* after an op which hasn't been optimized yet, then use a
|
|
* direct computation approach. It's not done directly
|
|
* at the beginning of the routine to filter out as much
|
|
* as possible this costly computation.
|
|
*/
|
|
if (comp->direct) {
|
|
found = xsltTestCompMatchDirect(ctxt, comp, matchNode,
|
|
comp->nsList, comp->nsNr);
|
|
goto exit;
|
|
}
|
|
|
|
if (!xsltTestPredicateMatch(ctxt, comp, node, step, sel))
|
|
goto rollback;
|
|
|
|
break;
|
|
}
|
|
default:
|
|
if (xsltTestStepMatch(ctxt, node, step) != 1)
|
|
goto rollback;
|
|
break;
|
|
}
|
|
}
|
|
found:
|
|
found = 1;
|
|
exit:
|
|
ctxt->inst = oldInst;
|
|
if (states.states != NULL) {
|
|
/* Free the rollback states */
|
|
xmlFree(states.states);
|
|
}
|
|
return found;
|
|
rollback:
|
|
/* got an error try to rollback */
|
|
if (states.states == NULL || states.nbstates <= 0) {
|
|
found = 0;
|
|
goto exit;
|
|
}
|
|
states.nbstates--;
|
|
i = states.states[states.nbstates].step;
|
|
node = states.states[states.nbstates].node;
|
|
#if 0
|
|
fprintf(stderr, "Pop: %d, %s\n", i, node->name);
|
|
#endif
|
|
goto restart;
|
|
}
|
|
|
|
/**
|
|
* xsltTestCompMatchList:
|
|
* @ctxt: a XSLT process context
|
|
* @node: a node
|
|
* @comp: the precompiled pattern list
|
|
*
|
|
* Test whether the node matches one of the patterns in the list
|
|
*
|
|
* Returns 1 if it matches, 0 if it doesn't and -1 in case of failure
|
|
*/
|
|
int
|
|
xsltTestCompMatchList(xsltTransformContextPtr ctxt, xmlNodePtr node,
|
|
xsltCompMatchPtr comp) {
|
|
int ret;
|
|
|
|
if ((ctxt == NULL) || (node == NULL))
|
|
return(-1);
|
|
while (comp != NULL) {
|
|
ret = xsltTestCompMatch(ctxt, comp, node, NULL, NULL);
|
|
if (ret == 1)
|
|
return(1);
|
|
comp = comp->next;
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* xsltCompMatchClearCache:
|
|
* @ctxt: a XSLT process context
|
|
* @comp: the precompiled pattern list
|
|
*
|
|
* Clear pattern match cache.
|
|
*/
|
|
void
|
|
xsltCompMatchClearCache(xsltTransformContextPtr ctxt, xsltCompMatchPtr comp) {
|
|
xsltStepOpPtr sel;
|
|
xmlXPathObjectPtr list;
|
|
|
|
if ((ctxt == NULL) || (comp == NULL))
|
|
return;
|
|
|
|
sel = &comp->steps[0];
|
|
list = (xmlXPathObjectPtr) XSLT_RUNTIME_EXTRA_LST(ctxt, sel->lenExtra);
|
|
|
|
if (list != NULL) {
|
|
xmlXPathFreeObject(list);
|
|
|
|
XSLT_RUNTIME_EXTRA_LST(ctxt, sel->lenExtra) = NULL;
|
|
XSLT_RUNTIME_EXTRA(ctxt, sel->previousExtra, ptr) = NULL;
|
|
XSLT_RUNTIME_EXTRA(ctxt, sel->indexExtra, ival) = 0;
|
|
XSLT_RUNTIME_EXTRA_FREE(ctxt, sel->lenExtra) = NULL;
|
|
}
|
|
}
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Dedicated parser for templates *
|
|
* *
|
|
************************************************************************/
|
|
|
|
#define CUR (*ctxt->cur)
|
|
#define SKIP(val) ctxt->cur += (val)
|
|
#define NXT(val) ctxt->cur[(val)]
|
|
#define CUR_PTR ctxt->cur
|
|
|
|
#define SKIP_BLANKS \
|
|
while (IS_BLANK_CH(CUR)) NEXT
|
|
|
|
#define CURRENT (*ctxt->cur)
|
|
#define NEXT ((*ctxt->cur) ? ctxt->cur++: ctxt->cur)
|
|
|
|
|
|
#define PUSH(op, val, val2, novar) \
|
|
if (xsltCompMatchAdd(ctxt, ctxt->comp, (op), (val), (val2), (novar))) goto error;
|
|
|
|
#define SWAP() \
|
|
xsltSwapTopCompMatch(ctxt->comp);
|
|
|
|
#define XSLT_ERROR(X) \
|
|
{ xsltError(ctxt, __FILE__, __LINE__, X); \
|
|
ctxt->error = (X); return; }
|
|
|
|
#define XSLT_ERROR0(X) \
|
|
{ xsltError(ctxt, __FILE__, __LINE__, X); \
|
|
ctxt->error = (X); return(0); }
|
|
|
|
/**
|
|
* xsltScanLiteral:
|
|
* @ctxt: the XPath Parser context
|
|
*
|
|
* Parse an XPath Litteral:
|
|
*
|
|
* [29] Literal ::= '"' [^"]* '"'
|
|
* | "'" [^']* "'"
|
|
*
|
|
* Returns the Literal parsed or NULL
|
|
*/
|
|
|
|
static xmlChar *
|
|
xsltScanLiteral(xsltParserContextPtr ctxt) {
|
|
const xmlChar *q, *cur;
|
|
xmlChar *ret = NULL;
|
|
int val, len;
|
|
|
|
SKIP_BLANKS;
|
|
if (CUR == '"') {
|
|
NEXT;
|
|
cur = q = CUR_PTR;
|
|
val = xmlStringCurrentChar(NULL, cur, &len);
|
|
while ((IS_CHAR(val)) && (val != '"')) {
|
|
cur += len;
|
|
val = xmlStringCurrentChar(NULL, cur, &len);
|
|
}
|
|
if (!IS_CHAR(val)) {
|
|
ctxt->error = 1;
|
|
return(NULL);
|
|
} else {
|
|
ret = xmlStrndup(q, cur - q);
|
|
}
|
|
cur += len;
|
|
CUR_PTR = cur;
|
|
} else if (CUR == '\'') {
|
|
NEXT;
|
|
cur = q = CUR_PTR;
|
|
val = xmlStringCurrentChar(NULL, cur, &len);
|
|
while ((IS_CHAR(val)) && (val != '\'')) {
|
|
cur += len;
|
|
val = xmlStringCurrentChar(NULL, cur, &len);
|
|
}
|
|
if (!IS_CHAR(val)) {
|
|
ctxt->error = 1;
|
|
return(NULL);
|
|
} else {
|
|
ret = xmlStrndup(q, cur - q);
|
|
}
|
|
cur += len;
|
|
CUR_PTR = cur;
|
|
} else {
|
|
/* XP_ERROR(XPATH_START_LITERAL_ERROR); */
|
|
ctxt->error = 1;
|
|
return(NULL);
|
|
}
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* xsltScanNCName:
|
|
* @ctxt: the XPath Parser context
|
|
*
|
|
* Parses a non qualified name
|
|
*
|
|
* Returns the Name parsed or NULL
|
|
*/
|
|
|
|
static xmlChar *
|
|
xsltScanNCName(xsltParserContextPtr ctxt) {
|
|
const xmlChar *q, *cur;
|
|
xmlChar *ret = NULL;
|
|
int val, len;
|
|
|
|
SKIP_BLANKS;
|
|
|
|
cur = q = CUR_PTR;
|
|
val = xmlStringCurrentChar(NULL, cur, &len);
|
|
if (!IS_LETTER(val) && (val != '_'))
|
|
return(NULL);
|
|
|
|
while ((IS_LETTER(val)) || (IS_DIGIT(val)) ||
|
|
(val == '.') || (val == '-') ||
|
|
(val == '_') ||
|
|
(IS_COMBINING(val)) ||
|
|
(IS_EXTENDER(val))) {
|
|
cur += len;
|
|
val = xmlStringCurrentChar(NULL, cur, &len);
|
|
}
|
|
ret = xmlStrndup(q, cur - q);
|
|
CUR_PTR = cur;
|
|
return(ret);
|
|
}
|
|
|
|
/*
|
|
* xsltCompileIdKeyPattern:
|
|
* @ctxt: the compilation context
|
|
* @name: a preparsed name
|
|
* @aid: whether id/key are allowed there
|
|
* @novar: flag to prohibit xslt var
|
|
*
|
|
* Compile the XSLT LocationIdKeyPattern
|
|
* [3] IdKeyPattern ::= 'id' '(' Literal ')'
|
|
* | 'key' '(' Literal ',' Literal ')'
|
|
*
|
|
* also handle NodeType and PI from:
|
|
*
|
|
* [7] NodeTest ::= NameTest
|
|
* | NodeType '(' ')'
|
|
* | 'processing-instruction' '(' Literal ')'
|
|
*/
|
|
static void
|
|
xsltCompileIdKeyPattern(xsltParserContextPtr ctxt, xmlChar *name,
|
|
int aid, int novar, xsltAxis axis) {
|
|
xmlChar *lit = NULL;
|
|
xmlChar *lit2 = NULL;
|
|
|
|
if (CUR != '(') {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : ( expected\n");
|
|
ctxt->error = 1;
|
|
return;
|
|
}
|
|
if ((aid) && (xmlStrEqual(name, (const xmlChar *)"id"))) {
|
|
if (axis != 0) {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : NodeTest expected\n");
|
|
ctxt->error = 1;
|
|
return;
|
|
}
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
lit = xsltScanLiteral(ctxt);
|
|
if (ctxt->error) {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : Literal expected\n");
|
|
xmlFree(lit);
|
|
return;
|
|
}
|
|
SKIP_BLANKS;
|
|
if (CUR != ')') {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : ) expected\n");
|
|
xmlFree(lit);
|
|
ctxt->error = 1;
|
|
return;
|
|
}
|
|
NEXT;
|
|
PUSH(XSLT_OP_ID, lit, NULL, novar);
|
|
lit = NULL;
|
|
} else if ((aid) && (xmlStrEqual(name, (const xmlChar *)"key"))) {
|
|
if (axis != 0) {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : NodeTest expected\n");
|
|
ctxt->error = 1;
|
|
return;
|
|
}
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
lit = xsltScanLiteral(ctxt);
|
|
if (ctxt->error) {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : Literal expected\n");
|
|
xmlFree(lit);
|
|
return;
|
|
}
|
|
SKIP_BLANKS;
|
|
if (CUR != ',') {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : , expected\n");
|
|
xmlFree(lit);
|
|
ctxt->error = 1;
|
|
return;
|
|
}
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
lit2 = xsltScanLiteral(ctxt);
|
|
if (ctxt->error) {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : Literal expected\n");
|
|
xmlFree(lit);
|
|
return;
|
|
}
|
|
SKIP_BLANKS;
|
|
if (CUR != ')') {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : ) expected\n");
|
|
xmlFree(lit);
|
|
xmlFree(lit2);
|
|
ctxt->error = 1;
|
|
return;
|
|
}
|
|
NEXT;
|
|
/* URGENT TODO: support namespace in keys */
|
|
PUSH(XSLT_OP_KEY, lit, lit2, novar);
|
|
lit = NULL;
|
|
lit2 = NULL;
|
|
} else if (xmlStrEqual(name, (const xmlChar *)"processing-instruction")) {
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
if (CUR != ')') {
|
|
lit = xsltScanLiteral(ctxt);
|
|
if (ctxt->error) {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : Literal expected\n");
|
|
xmlFree(lit);
|
|
return;
|
|
}
|
|
SKIP_BLANKS;
|
|
if (CUR != ')') {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : ) expected\n");
|
|
ctxt->error = 1;
|
|
xmlFree(lit);
|
|
return;
|
|
}
|
|
}
|
|
NEXT;
|
|
PUSH(XSLT_OP_PI, lit, NULL, novar);
|
|
lit = NULL;
|
|
} else if (xmlStrEqual(name, (const xmlChar *)"text")) {
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
if (CUR != ')') {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : ) expected\n");
|
|
ctxt->error = 1;
|
|
return;
|
|
}
|
|
NEXT;
|
|
PUSH(XSLT_OP_TEXT, NULL, NULL, novar);
|
|
} else if (xmlStrEqual(name, (const xmlChar *)"comment")) {
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
if (CUR != ')') {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : ) expected\n");
|
|
ctxt->error = 1;
|
|
return;
|
|
}
|
|
NEXT;
|
|
PUSH(XSLT_OP_COMMENT, NULL, NULL, novar);
|
|
} else if (xmlStrEqual(name, (const xmlChar *)"node")) {
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
if (CUR != ')') {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : ) expected\n");
|
|
ctxt->error = 1;
|
|
return;
|
|
}
|
|
NEXT;
|
|
if (axis == AXIS_ATTRIBUTE) {
|
|
PUSH(XSLT_OP_ATTR, NULL, NULL, novar);
|
|
}
|
|
else {
|
|
PUSH(XSLT_OP_NODE, NULL, NULL, novar);
|
|
}
|
|
} else if (aid) {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : expecting 'key' or 'id' or node type\n");
|
|
ctxt->error = 1;
|
|
return;
|
|
} else {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileIdKeyPattern : node type\n");
|
|
ctxt->error = 1;
|
|
return;
|
|
}
|
|
error:
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* xsltCompileStepPattern:
|
|
* @ctxt: the compilation context
|
|
* @token: a posible precompiled name
|
|
* @novar: flag to prohibit xslt variables from pattern
|
|
*
|
|
* Compile the XSLT StepPattern and generates a precompiled
|
|
* form suitable for fast matching.
|
|
*
|
|
* [5] StepPattern ::= ChildOrAttributeAxisSpecifier NodeTest Predicate*
|
|
* [6] ChildOrAttributeAxisSpecifier ::= AbbreviatedAxisSpecifier
|
|
* | ('child' | 'attribute') '::'
|
|
* from XPath
|
|
* [7] NodeTest ::= NameTest
|
|
* | NodeType '(' ')'
|
|
* | 'processing-instruction' '(' Literal ')'
|
|
* [8] Predicate ::= '[' PredicateExpr ']'
|
|
* [9] PredicateExpr ::= Expr
|
|
* [13] AbbreviatedAxisSpecifier ::= '@'?
|
|
* [37] NameTest ::= '*' | NCName ':' '*' | QName
|
|
*/
|
|
|
|
static void
|
|
xsltCompileStepPattern(xsltParserContextPtr ctxt, xmlChar *token, int novar) {
|
|
xmlChar *name = NULL;
|
|
const xmlChar *URI = NULL;
|
|
xmlChar *URL = NULL;
|
|
int level;
|
|
xsltAxis axis = 0;
|
|
|
|
SKIP_BLANKS;
|
|
if ((token == NULL) && (CUR == '@')) {
|
|
NEXT;
|
|
axis = AXIS_ATTRIBUTE;
|
|
}
|
|
parse_node_test:
|
|
if (token == NULL)
|
|
token = xsltScanNCName(ctxt);
|
|
if (token == NULL) {
|
|
if (CUR == '*') {
|
|
NEXT;
|
|
if (axis == AXIS_ATTRIBUTE) {
|
|
PUSH(XSLT_OP_ATTR, NULL, NULL, novar);
|
|
}
|
|
else {
|
|
PUSH(XSLT_OP_ALL, NULL, NULL, novar);
|
|
}
|
|
goto parse_predicate;
|
|
} else {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileStepPattern : Name expected\n");
|
|
ctxt->error = 1;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
|
|
SKIP_BLANKS;
|
|
if (CUR == '(') {
|
|
xsltCompileIdKeyPattern(ctxt, token, 0, novar, axis);
|
|
xmlFree(token);
|
|
token = NULL;
|
|
if (ctxt->error)
|
|
goto error;
|
|
} else if (CUR == ':') {
|
|
NEXT;
|
|
if (CUR != ':') {
|
|
xmlChar *prefix = token;
|
|
xmlNsPtr ns;
|
|
|
|
/*
|
|
* This is a namespace match
|
|
*/
|
|
token = xsltScanNCName(ctxt);
|
|
ns = xmlSearchNs(ctxt->doc, ctxt->elem, prefix);
|
|
if (ns == NULL) {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileStepPattern : no namespace bound to prefix %s\n",
|
|
prefix);
|
|
xmlFree(prefix);
|
|
prefix=NULL;
|
|
ctxt->error = 1;
|
|
goto error;
|
|
} else {
|
|
URL = xmlStrdup(ns->href);
|
|
}
|
|
xmlFree(prefix);
|
|
prefix=NULL;
|
|
if (token == NULL) {
|
|
if (CUR == '*') {
|
|
NEXT;
|
|
if (axis == AXIS_ATTRIBUTE) {
|
|
PUSH(XSLT_OP_ATTR, NULL, URL, novar);
|
|
URL = NULL;
|
|
}
|
|
else {
|
|
PUSH(XSLT_OP_NS, URL, NULL, novar);
|
|
URL = NULL;
|
|
}
|
|
} else {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileStepPattern : Name expected\n");
|
|
ctxt->error = 1;
|
|
xmlFree(URL);
|
|
goto error;
|
|
}
|
|
} else {
|
|
if (axis == AXIS_ATTRIBUTE) {
|
|
PUSH(XSLT_OP_ATTR, token, URL, novar);
|
|
token = NULL;
|
|
URL = NULL;
|
|
}
|
|
else {
|
|
PUSH(XSLT_OP_ELEM, token, URL, novar);
|
|
token = NULL;
|
|
URL = NULL;
|
|
}
|
|
}
|
|
} else {
|
|
if (axis != 0) {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileStepPattern : NodeTest expected\n");
|
|
ctxt->error = 1;
|
|
goto error;
|
|
}
|
|
NEXT;
|
|
if (xmlStrEqual(token, (const xmlChar *) "child")) {
|
|
axis = AXIS_CHILD;
|
|
} else if (xmlStrEqual(token, (const xmlChar *) "attribute")) {
|
|
axis = AXIS_ATTRIBUTE;
|
|
} else {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileStepPattern : 'child' or 'attribute' expected\n");
|
|
ctxt->error = 1;
|
|
goto error;
|
|
}
|
|
xmlFree(token);
|
|
token = NULL;
|
|
SKIP_BLANKS;
|
|
token = xsltScanNCName(ctxt);
|
|
goto parse_node_test;
|
|
}
|
|
} else {
|
|
URI = xsltGetQNameURI(ctxt->elem, &token);
|
|
if (token == NULL) {
|
|
ctxt->error = 1;
|
|
goto error;
|
|
}
|
|
if (URI != NULL)
|
|
URL = xmlStrdup(URI);
|
|
if (axis == AXIS_ATTRIBUTE) {
|
|
PUSH(XSLT_OP_ATTR, token, URL, novar);
|
|
token = NULL;
|
|
URL = NULL;
|
|
}
|
|
else {
|
|
PUSH(XSLT_OP_ELEM, token, URL, novar);
|
|
token = NULL;
|
|
URL = NULL;
|
|
}
|
|
}
|
|
parse_predicate:
|
|
SKIP_BLANKS;
|
|
level = 0;
|
|
while (CUR == '[') {
|
|
const xmlChar *q;
|
|
xmlChar *ret = NULL;
|
|
|
|
level++;
|
|
NEXT;
|
|
q = CUR_PTR;
|
|
while (CUR != 0) {
|
|
/* Skip over nested predicates */
|
|
if (CUR == '[')
|
|
level++;
|
|
else if (CUR == ']') {
|
|
level--;
|
|
if (level == 0)
|
|
break;
|
|
} else if (CUR == '"') {
|
|
NEXT;
|
|
while ((CUR != 0) && (CUR != '"'))
|
|
NEXT;
|
|
} else if (CUR == '\'') {
|
|
NEXT;
|
|
while ((CUR != 0) && (CUR != '\''))
|
|
NEXT;
|
|
}
|
|
NEXT;
|
|
}
|
|
if (CUR == 0) {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileStepPattern : ']' expected\n");
|
|
ctxt->error = 1;
|
|
return;
|
|
}
|
|
ret = xmlStrndup(q, CUR_PTR - q);
|
|
PUSH(XSLT_OP_PREDICATE, ret, NULL, novar);
|
|
ret = NULL;
|
|
/* push the predicate lower than local test */
|
|
SWAP();
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
}
|
|
return;
|
|
error:
|
|
if (token != NULL)
|
|
xmlFree(token);
|
|
if (name != NULL)
|
|
xmlFree(name);
|
|
}
|
|
|
|
/**
|
|
* xsltCompileRelativePathPattern:
|
|
* @comp: the compilation context
|
|
* @token: a posible precompiled name
|
|
* @novar: flag to prohibit xslt variables
|
|
*
|
|
* Compile the XSLT RelativePathPattern and generates a precompiled
|
|
* form suitable for fast matching.
|
|
*
|
|
* [4] RelativePathPattern ::= StepPattern
|
|
* | RelativePathPattern '/' StepPattern
|
|
* | RelativePathPattern '//' StepPattern
|
|
*/
|
|
static void
|
|
xsltCompileRelativePathPattern(xsltParserContextPtr ctxt, xmlChar *token, int novar) {
|
|
xsltCompileStepPattern(ctxt, token, novar);
|
|
if (ctxt->error)
|
|
goto error;
|
|
SKIP_BLANKS;
|
|
while ((CUR != 0) && (CUR != '|')) {
|
|
if ((CUR == '/') && (NXT(1) == '/')) {
|
|
PUSH(XSLT_OP_ANCESTOR, NULL, NULL, novar);
|
|
NEXT;
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
xsltCompileStepPattern(ctxt, NULL, novar);
|
|
} else if (CUR == '/') {
|
|
PUSH(XSLT_OP_PARENT, NULL, NULL, novar);
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
xsltCompileStepPattern(ctxt, NULL, novar);
|
|
} else {
|
|
ctxt->error = 1;
|
|
}
|
|
if (ctxt->error)
|
|
goto error;
|
|
SKIP_BLANKS;
|
|
}
|
|
error:
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* xsltCompileLocationPathPattern:
|
|
* @ctxt: the compilation context
|
|
* @novar: flag to prohibit xslt variables
|
|
*
|
|
* Compile the XSLT LocationPathPattern and generates a precompiled
|
|
* form suitable for fast matching.
|
|
*
|
|
* [2] LocationPathPattern ::= '/' RelativePathPattern?
|
|
* | IdKeyPattern (('/' | '//') RelativePathPattern)?
|
|
* | '//'? RelativePathPattern
|
|
*/
|
|
static void
|
|
xsltCompileLocationPathPattern(xsltParserContextPtr ctxt, int novar) {
|
|
SKIP_BLANKS;
|
|
if ((CUR == '/') && (NXT(1) == '/')) {
|
|
/*
|
|
* since we reverse the query
|
|
* a leading // can be safely ignored
|
|
*/
|
|
NEXT;
|
|
NEXT;
|
|
ctxt->comp->priority = 0.5; /* '//' means not 0 priority */
|
|
xsltCompileRelativePathPattern(ctxt, NULL, novar);
|
|
} else if (CUR == '/') {
|
|
/*
|
|
* We need to find root as the parent
|
|
*/
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
PUSH(XSLT_OP_ROOT, NULL, NULL, novar);
|
|
if ((CUR != 0) && (CUR != '|')) {
|
|
PUSH(XSLT_OP_PARENT, NULL, NULL, novar);
|
|
xsltCompileRelativePathPattern(ctxt, NULL, novar);
|
|
}
|
|
} else if (CUR == '*') {
|
|
xsltCompileRelativePathPattern(ctxt, NULL, novar);
|
|
} else if (CUR == '@') {
|
|
xsltCompileRelativePathPattern(ctxt, NULL, novar);
|
|
} else {
|
|
xmlChar *name;
|
|
name = xsltScanNCName(ctxt);
|
|
if (name == NULL) {
|
|
xsltTransformError(NULL, NULL, NULL,
|
|
"xsltCompileLocationPathPattern : Name expected\n");
|
|
ctxt->error = 1;
|
|
return;
|
|
}
|
|
SKIP_BLANKS;
|
|
if ((CUR == '(') && !xmlXPathIsNodeType(name)) {
|
|
xsltCompileIdKeyPattern(ctxt, name, 1, novar, 0);
|
|
xmlFree(name);
|
|
name = NULL;
|
|
if (ctxt->error)
|
|
return;
|
|
if ((CUR == '/') && (NXT(1) == '/')) {
|
|
PUSH(XSLT_OP_ANCESTOR, NULL, NULL, novar);
|
|
NEXT;
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
xsltCompileRelativePathPattern(ctxt, NULL, novar);
|
|
} else if (CUR == '/') {
|
|
PUSH(XSLT_OP_PARENT, NULL, NULL, novar);
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
xsltCompileRelativePathPattern(ctxt, NULL, novar);
|
|
}
|
|
return;
|
|
}
|
|
xsltCompileRelativePathPattern(ctxt, name, novar);
|
|
}
|
|
error:
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* xsltCompilePatternInternal:
|
|
* @pattern: an XSLT pattern
|
|
* @doc: the containing document
|
|
* @node: the containing element
|
|
* @style: the stylesheet
|
|
* @runtime: the transformation context, if done at run-time
|
|
* @novar: flag to prohibit xslt variables
|
|
*
|
|
* Compile the XSLT pattern and generates a list of precompiled form suitable
|
|
* for fast matching.
|
|
*
|
|
* [1] Pattern ::= LocationPathPattern | Pattern '|' LocationPathPattern
|
|
*
|
|
* Returns the generated pattern list or NULL in case of failure
|
|
*/
|
|
|
|
static xsltCompMatchPtr
|
|
xsltCompilePatternInternal(const xmlChar *pattern, xmlDocPtr doc,
|
|
xmlNodePtr node, xsltStylesheetPtr style,
|
|
xsltTransformContextPtr runtime, int novar) {
|
|
xsltParserContextPtr ctxt = NULL;
|
|
xsltCompMatchPtr element, first = NULL, previous = NULL;
|
|
int current, start, end, level, j;
|
|
|
|
if (pattern == NULL) {
|
|
xsltTransformError(NULL, NULL, node,
|
|
"xsltCompilePattern : NULL pattern\n");
|
|
return(NULL);
|
|
}
|
|
|
|
ctxt = xsltNewParserContext(style, runtime);
|
|
if (ctxt == NULL)
|
|
return(NULL);
|
|
ctxt->doc = doc;
|
|
ctxt->elem = node;
|
|
current = end = 0;
|
|
while (pattern[current] != 0) {
|
|
start = current;
|
|
while (IS_BLANK_CH(pattern[current]))
|
|
current++;
|
|
end = current;
|
|
level = 0;
|
|
while ((pattern[end] != 0) && ((pattern[end] != '|') || (level != 0))) {
|
|
if (pattern[end] == '[')
|
|
level++;
|
|
else if (pattern[end] == ']')
|
|
level--;
|
|
else if (pattern[end] == '\'') {
|
|
end++;
|
|
while ((pattern[end] != 0) && (pattern[end] != '\''))
|
|
end++;
|
|
} else if (pattern[end] == '"') {
|
|
end++;
|
|
while ((pattern[end] != 0) && (pattern[end] != '"'))
|
|
end++;
|
|
}
|
|
if (pattern[end] == 0)
|
|
break;
|
|
end++;
|
|
}
|
|
if (current == end) {
|
|
xsltTransformError(NULL, NULL, node,
|
|
"xsltCompilePattern : NULL pattern\n");
|
|
goto error;
|
|
}
|
|
element = xsltNewCompMatch();
|
|
if (element == NULL) {
|
|
goto error;
|
|
}
|
|
if (first == NULL)
|
|
first = element;
|
|
else if (previous != NULL)
|
|
previous->next = element;
|
|
previous = element;
|
|
|
|
ctxt->comp = element;
|
|
ctxt->base = xmlStrndup(&pattern[start], end - start);
|
|
if (ctxt->base == NULL)
|
|
goto error;
|
|
ctxt->cur = &(ctxt->base)[current - start];
|
|
element->pattern = ctxt->base;
|
|
element->node = node;
|
|
element->nsList = xmlGetNsList(doc, node);
|
|
j = 0;
|
|
if (element->nsList != NULL) {
|
|
while (element->nsList[j] != NULL)
|
|
j++;
|
|
}
|
|
element->nsNr = j;
|
|
|
|
|
|
#ifdef WITH_XSLT_DEBUG_PATTERN
|
|
xsltGenericDebug(xsltGenericDebugContext,
|
|
"xsltCompilePattern : parsing '%s'\n",
|
|
element->pattern);
|
|
#endif
|
|
/*
|
|
Preset default priority to be zero.
|
|
This may be changed by xsltCompileLocationPathPattern.
|
|
*/
|
|
element->priority = 0;
|
|
xsltCompileLocationPathPattern(ctxt, novar);
|
|
if (ctxt->error) {
|
|
xsltTransformError(NULL, style, node,
|
|
"xsltCompilePattern : failed to compile '%s'\n",
|
|
element->pattern);
|
|
if (style != NULL) style->errors++;
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* Reverse for faster interpretation.
|
|
*/
|
|
xsltReverseCompMatch(ctxt, element);
|
|
|
|
/*
|
|
* Set-up the priority
|
|
*/
|
|
if (element->priority == 0) { /* if not yet determined */
|
|
if (((element->steps[0].op == XSLT_OP_ELEM) ||
|
|
(element->steps[0].op == XSLT_OP_ATTR) ||
|
|
(element->steps[0].op == XSLT_OP_PI)) &&
|
|
(element->steps[0].value != NULL) &&
|
|
(element->steps[1].op == XSLT_OP_END)) {
|
|
; /* previously preset */
|
|
} else if ((element->steps[0].op == XSLT_OP_ATTR) &&
|
|
(element->steps[0].value2 != NULL) &&
|
|
(element->steps[1].op == XSLT_OP_END)) {
|
|
element->priority = -0.25;
|
|
} else if ((element->steps[0].op == XSLT_OP_NS) &&
|
|
(element->steps[0].value != NULL) &&
|
|
(element->steps[1].op == XSLT_OP_END)) {
|
|
element->priority = -0.25;
|
|
} else if ((element->steps[0].op == XSLT_OP_ATTR) &&
|
|
(element->steps[0].value == NULL) &&
|
|
(element->steps[0].value2 == NULL) &&
|
|
(element->steps[1].op == XSLT_OP_END)) {
|
|
element->priority = -0.5;
|
|
} else if (((element->steps[0].op == XSLT_OP_PI) ||
|
|
(element->steps[0].op == XSLT_OP_TEXT) ||
|
|
(element->steps[0].op == XSLT_OP_ALL) ||
|
|
(element->steps[0].op == XSLT_OP_NODE) ||
|
|
(element->steps[0].op == XSLT_OP_COMMENT)) &&
|
|
(element->steps[1].op == XSLT_OP_END)) {
|
|
element->priority = -0.5;
|
|
} else {
|
|
element->priority = 0.5;
|
|
}
|
|
}
|
|
#ifdef WITH_XSLT_DEBUG_PATTERN
|
|
xsltGenericDebug(xsltGenericDebugContext,
|
|
"xsltCompilePattern : parsed %s, default priority %f\n",
|
|
element->pattern, element->priority);
|
|
#endif
|
|
if (pattern[end] == '|')
|
|
end++;
|
|
current = end;
|
|
}
|
|
if (end == 0) {
|
|
xsltTransformError(NULL, style, node,
|
|
"xsltCompilePattern : NULL pattern\n");
|
|
if (style != NULL) style->errors++;
|
|
goto error;
|
|
}
|
|
|
|
xsltFreeParserContext(ctxt);
|
|
return(first);
|
|
|
|
error:
|
|
if (ctxt != NULL)
|
|
xsltFreeParserContext(ctxt);
|
|
if (first != NULL)
|
|
xsltFreeCompMatchList(first);
|
|
return(NULL);
|
|
}
|
|
|
|
/**
|
|
* xsltCompilePattern:
|
|
* @pattern: an XSLT pattern
|
|
* @doc: the containing document
|
|
* @node: the containing element
|
|
* @style: the stylesheet
|
|
* @runtime: the transformation context, if done at run-time
|
|
*
|
|
* Compile the XSLT pattern and generates a list of precompiled form suitable
|
|
* for fast matching.
|
|
*
|
|
* [1] Pattern ::= LocationPathPattern | Pattern '|' LocationPathPattern
|
|
*
|
|
* Returns the generated pattern list or NULL in case of failure
|
|
*/
|
|
|
|
xsltCompMatchPtr
|
|
xsltCompilePattern(const xmlChar *pattern, xmlDocPtr doc,
|
|
xmlNodePtr node, xsltStylesheetPtr style,
|
|
xsltTransformContextPtr runtime) {
|
|
return (xsltCompilePatternInternal(pattern, doc, node, style, runtime, 0));
|
|
}
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Module interfaces *
|
|
* *
|
|
************************************************************************/
|
|
|
|
/**
|
|
* xsltAddTemplate:
|
|
* @style: an XSLT stylesheet
|
|
* @cur: an XSLT template
|
|
* @mode: the mode name or NULL
|
|
* @modeURI: the mode URI or NULL
|
|
*
|
|
* Register the XSLT pattern associated to @cur
|
|
*
|
|
* Returns -1 in case of error, 0 otherwise
|
|
*/
|
|
int
|
|
xsltAddTemplate(xsltStylesheetPtr style, xsltTemplatePtr cur,
|
|
const xmlChar *mode, const xmlChar *modeURI) {
|
|
xsltCompMatchPtr pat, list, next;
|
|
/*
|
|
* 'top' will point to style->xxxMatch ptr - declaring as 'void'
|
|
* avoids gcc 'type-punned pointer' warning.
|
|
*/
|
|
xsltCompMatchPtr *top = NULL;
|
|
const xmlChar *name = NULL;
|
|
float priority; /* the priority */
|
|
|
|
if ((style == NULL) || (cur == NULL))
|
|
return(-1);
|
|
|
|
if (cur->next != NULL)
|
|
cur->position = cur->next->position + 1;
|
|
|
|
/* Register named template */
|
|
if (cur->name != NULL) {
|
|
if (style->namedTemplates == NULL) {
|
|
style->namedTemplates = xmlHashCreate(10);
|
|
if (style->namedTemplates == NULL)
|
|
return(-1);
|
|
}
|
|
else {
|
|
void *dup = xmlHashLookup2(style->namedTemplates, cur->name,
|
|
cur->nameURI);
|
|
if (dup != NULL) {
|
|
xsltTransformError(NULL, style, cur->elem,
|
|
"xsl:template: error duplicate name '%s'\n",
|
|
cur->name);
|
|
style->errors++;
|
|
return(-1);
|
|
}
|
|
}
|
|
|
|
xmlHashAddEntry2(style->namedTemplates, cur->name, cur->nameURI, cur);
|
|
}
|
|
|
|
if (cur->match == NULL) {
|
|
if (cur->name == NULL) {
|
|
xsltTransformError(NULL, style, cur->elem,
|
|
"xsl:template: need to specify match or name attribute\n");
|
|
style->errors++;
|
|
return(-1);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
priority = cur->priority;
|
|
pat = xsltCompilePatternInternal(cur->match, style->doc, cur->elem,
|
|
style, NULL, 1);
|
|
if (pat == NULL)
|
|
return(-1);
|
|
while (pat) {
|
|
next = pat->next;
|
|
pat->next = NULL;
|
|
name = NULL;
|
|
|
|
pat->template = cur;
|
|
if (mode != NULL)
|
|
pat->mode = xmlDictLookup(style->dict, mode, -1);
|
|
if (modeURI != NULL)
|
|
pat->modeURI = xmlDictLookup(style->dict, modeURI, -1);
|
|
if (priority != XSLT_PAT_NO_PRIORITY)
|
|
pat->priority = priority;
|
|
|
|
/*
|
|
* insert it in the hash table list corresponding to its lookup name
|
|
*/
|
|
switch (pat->steps[0].op) {
|
|
case XSLT_OP_ATTR:
|
|
if (pat->steps[0].value != NULL)
|
|
name = pat->steps[0].value;
|
|
else
|
|
top = &(style->attrMatch);
|
|
break;
|
|
case XSLT_OP_PARENT:
|
|
case XSLT_OP_ANCESTOR:
|
|
top = &(style->elemMatch);
|
|
break;
|
|
case XSLT_OP_ROOT:
|
|
top = &(style->rootMatch);
|
|
break;
|
|
case XSLT_OP_KEY:
|
|
top = &(style->keyMatch);
|
|
break;
|
|
case XSLT_OP_ID:
|
|
/* TODO optimize ID !!! */
|
|
case XSLT_OP_NS:
|
|
case XSLT_OP_ALL:
|
|
top = &(style->elemMatch);
|
|
break;
|
|
case XSLT_OP_END:
|
|
case XSLT_OP_PREDICATE:
|
|
xsltTransformError(NULL, style, NULL,
|
|
"xsltAddTemplate: invalid compiled pattern\n");
|
|
xsltFreeCompMatch(pat);
|
|
return(-1);
|
|
/*
|
|
* TODO: some flags at the top level about type based patterns
|
|
* would be faster than inclusion in the hash table.
|
|
*/
|
|
case XSLT_OP_PI:
|
|
if (pat->steps[0].value != NULL)
|
|
name = pat->steps[0].value;
|
|
else
|
|
top = &(style->piMatch);
|
|
break;
|
|
case XSLT_OP_COMMENT:
|
|
top = &(style->commentMatch);
|
|
break;
|
|
case XSLT_OP_TEXT:
|
|
top = &(style->textMatch);
|
|
break;
|
|
case XSLT_OP_ELEM:
|
|
case XSLT_OP_NODE:
|
|
if (pat->steps[0].value != NULL)
|
|
name = pat->steps[0].value;
|
|
else
|
|
top = &(style->elemMatch);
|
|
break;
|
|
}
|
|
if (name != NULL) {
|
|
if (style->templatesHash == NULL) {
|
|
style->templatesHash = xmlHashCreate(1024);
|
|
if (style->templatesHash == NULL) {
|
|
xsltFreeCompMatch(pat);
|
|
return(-1);
|
|
}
|
|
xmlHashAddEntry3(style->templatesHash, name, mode, modeURI, pat);
|
|
} else {
|
|
list = (xsltCompMatchPtr) xmlHashLookup3(style->templatesHash,
|
|
name, mode, modeURI);
|
|
if (list == NULL) {
|
|
xmlHashAddEntry3(style->templatesHash, name,
|
|
mode, modeURI, pat);
|
|
} else {
|
|
/*
|
|
* Note '<=' since one must choose among the matching
|
|
* template rules that are left, the one that occurs
|
|
* last in the stylesheet
|
|
*/
|
|
if (list->priority <= pat->priority) {
|
|
pat->next = list;
|
|
xmlHashUpdateEntry3(style->templatesHash, name,
|
|
mode, modeURI, pat, NULL);
|
|
} else {
|
|
while (list->next != NULL) {
|
|
if (list->next->priority <= pat->priority)
|
|
break;
|
|
list = list->next;
|
|
}
|
|
pat->next = list->next;
|
|
list->next = pat;
|
|
}
|
|
}
|
|
}
|
|
} else if (top != NULL) {
|
|
list = *top;
|
|
if (list == NULL) {
|
|
*top = pat;
|
|
pat->next = NULL;
|
|
} else if (list->priority <= pat->priority) {
|
|
pat->next = list;
|
|
*top = pat;
|
|
} else {
|
|
while (list->next != NULL) {
|
|
if (list->next->priority <= pat->priority)
|
|
break;
|
|
list = list->next;
|
|
}
|
|
pat->next = list->next;
|
|
list->next = pat;
|
|
}
|
|
} else {
|
|
xsltTransformError(NULL, style, NULL,
|
|
"xsltAddTemplate: invalid compiled pattern\n");
|
|
xsltFreeCompMatch(pat);
|
|
return(-1);
|
|
}
|
|
#ifdef WITH_XSLT_DEBUG_PATTERN
|
|
if (mode)
|
|
xsltGenericDebug(xsltGenericDebugContext,
|
|
"added pattern : '%s' mode '%s' priority %f\n",
|
|
pat->pattern, pat->mode, pat->priority);
|
|
else
|
|
xsltGenericDebug(xsltGenericDebugContext,
|
|
"added pattern : '%s' priority %f\n",
|
|
pat->pattern, pat->priority);
|
|
#endif
|
|
|
|
pat = next;
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
static int
|
|
xsltComputeAllKeys(xsltTransformContextPtr ctxt, xmlNodePtr contextNode)
|
|
{
|
|
if ((ctxt == NULL) || (contextNode == NULL)) {
|
|
xsltTransformError(ctxt, NULL, ctxt->inst,
|
|
"Internal error in xsltComputeAllKeys(): "
|
|
"Bad arguments.\n");
|
|
return(-1);
|
|
}
|
|
|
|
if (ctxt->document == NULL) {
|
|
/*
|
|
* The document info will only be NULL if we have a RTF.
|
|
*/
|
|
if (contextNode->doc->_private != NULL)
|
|
goto doc_info_mismatch;
|
|
/*
|
|
* On-demand creation of the document info (needed for keys).
|
|
*/
|
|
ctxt->document = xsltNewDocument(ctxt, contextNode->doc);
|
|
if (ctxt->document == NULL)
|
|
return(-1);
|
|
}
|
|
return xsltInitAllDocKeys(ctxt);
|
|
|
|
doc_info_mismatch:
|
|
xsltTransformError(ctxt, NULL, ctxt->inst,
|
|
"Internal error in xsltComputeAllKeys(): "
|
|
"The context's document info doesn't match the "
|
|
"document info of the current result tree.\n");
|
|
ctxt->state = XSLT_STATE_STOPPED;
|
|
return(-1);
|
|
}
|
|
|
|
/**
|
|
* xsltGetTemplate:
|
|
* @ctxt: a XSLT process context
|
|
* @node: the node being processed
|
|
* @style: the current style
|
|
*
|
|
* Finds the template applying to this node, if @style is non-NULL
|
|
* it means one needs to look for the next imported template in scope.
|
|
*
|
|
* Returns the xsltTemplatePtr or NULL if not found
|
|
*/
|
|
xsltTemplatePtr
|
|
xsltGetTemplate(xsltTransformContextPtr ctxt, xmlNodePtr node,
|
|
xsltStylesheetPtr style)
|
|
{
|
|
xsltStylesheetPtr curstyle;
|
|
xsltTemplatePtr ret = NULL;
|
|
const xmlChar *name = NULL;
|
|
xsltCompMatchPtr list = NULL;
|
|
float priority;
|
|
int keyed = 0;
|
|
|
|
if ((ctxt == NULL) || (node == NULL))
|
|
return(NULL);
|
|
|
|
if (style == NULL) {
|
|
curstyle = ctxt->style;
|
|
} else {
|
|
curstyle = xsltNextImport(style);
|
|
}
|
|
|
|
while ((curstyle != NULL) && (curstyle != style)) {
|
|
priority = XSLT_PAT_NO_PRIORITY;
|
|
/* TODO : handle IDs/keys here ! */
|
|
if (curstyle->templatesHash != NULL) {
|
|
/*
|
|
* Use the top name as selector
|
|
*/
|
|
switch (node->type) {
|
|
case XML_ELEMENT_NODE:
|
|
if (node->name[0] == ' ')
|
|
break;
|
|
/* Intentional fall-through */
|
|
case XML_ATTRIBUTE_NODE:
|
|
case XML_PI_NODE:
|
|
name = node->name;
|
|
break;
|
|
case XML_DOCUMENT_NODE:
|
|
case XML_HTML_DOCUMENT_NODE:
|
|
case XML_TEXT_NODE:
|
|
case XML_CDATA_SECTION_NODE:
|
|
case XML_COMMENT_NODE:
|
|
case XML_ENTITY_REF_NODE:
|
|
case XML_ENTITY_NODE:
|
|
case XML_DOCUMENT_TYPE_NODE:
|
|
case XML_DOCUMENT_FRAG_NODE:
|
|
case XML_NOTATION_NODE:
|
|
case XML_DTD_NODE:
|
|
case XML_ELEMENT_DECL:
|
|
case XML_ATTRIBUTE_DECL:
|
|
case XML_ENTITY_DECL:
|
|
case XML_NAMESPACE_DECL:
|
|
case XML_XINCLUDE_START:
|
|
case XML_XINCLUDE_END:
|
|
break;
|
|
default:
|
|
return(NULL);
|
|
|
|
}
|
|
}
|
|
if (name != NULL) {
|
|
/*
|
|
* find the list of applicable expressions based on the name
|
|
*/
|
|
list = (xsltCompMatchPtr) xmlHashLookup3(curstyle->templatesHash,
|
|
name, ctxt->mode, ctxt->modeURI);
|
|
} else
|
|
list = NULL;
|
|
while (list != NULL) {
|
|
if (xsltTestCompMatch(ctxt, list, node,
|
|
ctxt->mode, ctxt->modeURI) == 1) {
|
|
ret = list->template;
|
|
priority = list->priority;
|
|
break;
|
|
}
|
|
list = list->next;
|
|
}
|
|
list = NULL;
|
|
|
|
/*
|
|
* find alternate generic matches
|
|
*/
|
|
switch (node->type) {
|
|
case XML_ELEMENT_NODE:
|
|
if (node->name[0] == ' ')
|
|
list = curstyle->rootMatch;
|
|
else
|
|
list = curstyle->elemMatch;
|
|
if (node->psvi != NULL) keyed = 1;
|
|
break;
|
|
case XML_ATTRIBUTE_NODE: {
|
|
xmlAttrPtr attr;
|
|
|
|
list = curstyle->attrMatch;
|
|
attr = (xmlAttrPtr) node;
|
|
if (attr->psvi != NULL) keyed = 1;
|
|
break;
|
|
}
|
|
case XML_PI_NODE:
|
|
list = curstyle->piMatch;
|
|
if (node->psvi != NULL) keyed = 1;
|
|
break;
|
|
case XML_DOCUMENT_NODE:
|
|
case XML_HTML_DOCUMENT_NODE: {
|
|
xmlDocPtr doc;
|
|
|
|
list = curstyle->rootMatch;
|
|
doc = (xmlDocPtr) node;
|
|
if (doc->psvi != NULL) keyed = 1;
|
|
break;
|
|
}
|
|
case XML_TEXT_NODE:
|
|
case XML_CDATA_SECTION_NODE:
|
|
list = curstyle->textMatch;
|
|
if (node->psvi != NULL) keyed = 1;
|
|
break;
|
|
case XML_COMMENT_NODE:
|
|
list = curstyle->commentMatch;
|
|
if (node->psvi != NULL) keyed = 1;
|
|
break;
|
|
case XML_ENTITY_REF_NODE:
|
|
case XML_ENTITY_NODE:
|
|
case XML_DOCUMENT_TYPE_NODE:
|
|
case XML_DOCUMENT_FRAG_NODE:
|
|
case XML_NOTATION_NODE:
|
|
case XML_DTD_NODE:
|
|
case XML_ELEMENT_DECL:
|
|
case XML_ATTRIBUTE_DECL:
|
|
case XML_ENTITY_DECL:
|
|
case XML_NAMESPACE_DECL:
|
|
case XML_XINCLUDE_START:
|
|
case XML_XINCLUDE_END:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
while ((list != NULL) &&
|
|
((ret == NULL) ||
|
|
(list->priority > priority) ||
|
|
((list->priority == priority) &&
|
|
(list->template->position > ret->position)))) {
|
|
if (xsltTestCompMatch(ctxt, list, node,
|
|
ctxt->mode, ctxt->modeURI) == 1) {
|
|
ret = list->template;
|
|
priority = list->priority;
|
|
break;
|
|
}
|
|
list = list->next;
|
|
}
|
|
/*
|
|
* Some of the tests for elements can also apply to documents
|
|
*/
|
|
if ((node->type == XML_DOCUMENT_NODE) ||
|
|
(node->type == XML_HTML_DOCUMENT_NODE) ||
|
|
(node->type == XML_TEXT_NODE)) {
|
|
list = curstyle->elemMatch;
|
|
while ((list != NULL) &&
|
|
((ret == NULL) ||
|
|
(list->priority > priority) ||
|
|
((list->priority == priority) &&
|
|
(list->template->position > ret->position)))) {
|
|
if (xsltTestCompMatch(ctxt, list, node,
|
|
ctxt->mode, ctxt->modeURI) == 1) {
|
|
ret = list->template;
|
|
priority = list->priority;
|
|
break;
|
|
}
|
|
list = list->next;
|
|
}
|
|
} else if ((node->type == XML_PI_NODE) ||
|
|
(node->type == XML_COMMENT_NODE)) {
|
|
list = curstyle->elemMatch;
|
|
while ((list != NULL) &&
|
|
((ret == NULL) ||
|
|
(list->priority > priority) ||
|
|
((list->priority == priority) &&
|
|
(list->template->position > ret->position)))) {
|
|
if (xsltTestCompMatch(ctxt, list, node,
|
|
ctxt->mode, ctxt->modeURI) == 1) {
|
|
ret = list->template;
|
|
priority = list->priority;
|
|
break;
|
|
}
|
|
list = list->next;
|
|
}
|
|
}
|
|
|
|
keyed_match:
|
|
if (keyed) {
|
|
list = curstyle->keyMatch;
|
|
while ((list != NULL) &&
|
|
((ret == NULL) ||
|
|
(list->priority > priority) ||
|
|
((list->priority == priority) &&
|
|
(list->template->position > ret->position)))) {
|
|
if (xsltTestCompMatch(ctxt, list, node,
|
|
ctxt->mode, ctxt->modeURI) == 1) {
|
|
ret = list->template;
|
|
priority = list->priority;
|
|
break;
|
|
}
|
|
list = list->next;
|
|
}
|
|
}
|
|
else if (ctxt->hasTemplKeyPatterns &&
|
|
((ctxt->document == NULL) ||
|
|
(ctxt->document->nbKeysComputed < ctxt->nbKeys)))
|
|
{
|
|
/*
|
|
* Compute all remaining keys for this document.
|
|
*
|
|
* REVISIT TODO: I think this could be further optimized.
|
|
*/
|
|
if (xsltComputeAllKeys(ctxt, node) == -1)
|
|
goto error;
|
|
|
|
switch (node->type) {
|
|
case XML_ELEMENT_NODE:
|
|
if (node->psvi != NULL) keyed = 1;
|
|
break;
|
|
case XML_ATTRIBUTE_NODE:
|
|
if (((xmlAttrPtr) node)->psvi != NULL) keyed = 1;
|
|
break;
|
|
case XML_TEXT_NODE:
|
|
case XML_CDATA_SECTION_NODE:
|
|
case XML_COMMENT_NODE:
|
|
case XML_PI_NODE:
|
|
if (node->psvi != NULL) keyed = 1;
|
|
break;
|
|
case XML_DOCUMENT_NODE:
|
|
case XML_HTML_DOCUMENT_NODE:
|
|
if (((xmlDocPtr) node)->psvi != NULL) keyed = 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (keyed)
|
|
goto keyed_match;
|
|
}
|
|
if (ret != NULL)
|
|
return(ret);
|
|
|
|
/*
|
|
* Cycle on next curstylesheet import.
|
|
*/
|
|
curstyle = xsltNextImport(curstyle);
|
|
}
|
|
|
|
error:
|
|
return(NULL);
|
|
}
|
|
|
|
/**
|
|
* xsltCleanupTemplates:
|
|
* @style: an XSLT stylesheet
|
|
*
|
|
* Cleanup the state of the templates used by the stylesheet and
|
|
* the ones it imports.
|
|
*/
|
|
void
|
|
xsltCleanupTemplates(xsltStylesheetPtr style ATTRIBUTE_UNUSED) {
|
|
}
|
|
|
|
/**
|
|
* xsltFreeTemplateHashes:
|
|
* @style: an XSLT stylesheet
|
|
*
|
|
* Free up the memory used by xsltAddTemplate/xsltGetTemplate mechanism
|
|
*/
|
|
void
|
|
xsltFreeTemplateHashes(xsltStylesheetPtr style) {
|
|
if (style->templatesHash != NULL)
|
|
xmlHashFree(style->templatesHash, xsltFreeCompMatchListEntry);
|
|
if (style->rootMatch != NULL)
|
|
xsltFreeCompMatchList(style->rootMatch);
|
|
if (style->keyMatch != NULL)
|
|
xsltFreeCompMatchList(style->keyMatch);
|
|
if (style->elemMatch != NULL)
|
|
xsltFreeCompMatchList(style->elemMatch);
|
|
if (style->attrMatch != NULL)
|
|
xsltFreeCompMatchList(style->attrMatch);
|
|
if (style->parentMatch != NULL)
|
|
xsltFreeCompMatchList(style->parentMatch);
|
|
if (style->textMatch != NULL)
|
|
xsltFreeCompMatchList(style->textMatch);
|
|
if (style->piMatch != NULL)
|
|
xsltFreeCompMatchList(style->piMatch);
|
|
if (style->commentMatch != NULL)
|
|
xsltFreeCompMatchList(style->commentMatch);
|
|
if (style->namedTemplates != NULL)
|
|
xmlHashFree(style->namedTemplates, NULL);
|
|
}
|
|
|