/*
* preproc.c: Preprocessing of style operations
*
* References:
* http://www.w3.org/TR/1999/REC-xslt-19991116
*
* Michael Kay "XSLT Programmer's Reference" pp 637-643
* Writing Multiple Output Files
*
* XSLT-1.1 Working Draft
* http://www.w3.org/TR/xslt11#multiple-output
*
* See Copyright for the status of this software.
*
* daniel@veillard.com
*/
#define IN_LIBXSLT
#include "libxslt.h"
#include <string.h>
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/valid.h>
#include <libxml/hash.h>
#include <libxml/uri.h>
#include <libxml/xmlerror.h>
#include "xslt.h"
#include "xsltutils.h"
#include "xsltInternals.h"
#include "transform.h"
#include "templates.h"
#include "variables.h"
#include "numbersInternals.h"
#include "preproc.h"
#include "extra.h"
#include "imports.h"
#include "extensions.h"
#ifdef WITH_XSLT_DEBUG
#define WITH_XSLT_DEBUG_PREPROC
#endif
const xmlChar *xsltExtMarker = (const xmlChar *) "Extension Element";
/************************************************************************
* *
* handling of precomputed data *
* *
************************************************************************/
/**
* xsltNewStylePreComp:
* @style: the XSLT stylesheet
* @type: the construct type
*
* Create a new XSLT Style precomputed block
*
* Returns the newly allocated xsltStylePreCompPtr or NULL in case of error
*/
static xsltStylePreCompPtr
xsltNewStylePreComp(xsltStylesheetPtr style, xsltStyleType type) {
xsltStylePreCompPtr cur;
cur = (xsltStylePreCompPtr) xmlMalloc(sizeof(xsltStylePreComp));
if (cur == NULL) {
xsltPrintErrorContext(NULL, style, NULL);
xsltGenericError(xsltGenericErrorContext,
"xsltNewStylePreComp : malloc failed\n");
style->errors++;
return(NULL);
}
memset(cur, 0, sizeof(xsltStylePreComp));
cur->type = type;
switch (cur->type) {
case XSLT_FUNC_COPY:
cur->func = (xsltTransformFunction) xsltCopy;break;
case XSLT_FUNC_SORT:
cur->func = (xsltTransformFunction) xsltSort;break;
case XSLT_FUNC_TEXT:
cur->func = (xsltTransformFunction) xsltText;break;
case XSLT_FUNC_ELEMENT:
cur->func = (xsltTransformFunction) xsltElement;break;
case XSLT_FUNC_ATTRIBUTE:
cur->func = (xsltTransformFunction) xsltAttribute;break;
case XSLT_FUNC_COMMENT:
cur->func = (xsltTransformFunction) xsltComment;break;
case XSLT_FUNC_PI:
cur->func = (xsltTransformFunction) xsltProcessingInstruction;
break;
case XSLT_FUNC_COPYOF:
cur->func = (xsltTransformFunction) xsltCopyOf;break;
case XSLT_FUNC_VALUEOF:
cur->func = (xsltTransformFunction) xsltValueOf;break;
case XSLT_FUNC_NUMBER:
cur->func = (xsltTransformFunction) xsltNumber;break;
case XSLT_FUNC_APPLYIMPORTS:
cur->func = (xsltTransformFunction) xsltApplyImports;break;
case XSLT_FUNC_CALLTEMPLATE:
cur->func = (xsltTransformFunction) xsltCallTemplate;break;
case XSLT_FUNC_APPLYTEMPLATES:
cur->func = (xsltTransformFunction) xsltApplyTemplates;break;
case XSLT_FUNC_CHOOSE:
cur->func = (xsltTransformFunction) xsltChoose;break;
case XSLT_FUNC_IF:
cur->func = (xsltTransformFunction) xsltIf;break;
case XSLT_FUNC_FOREACH:
cur->func = (xsltTransformFunction) xsltForEach;break;
case XSLT_FUNC_DOCUMENT:
cur->func = (xsltTransformFunction) xsltDocumentElem;break;
case XSLT_FUNC_WITHPARAM:
cur->func = NULL;break;
case XSLT_FUNC_PARAM:
cur->func = NULL;break;
case XSLT_FUNC_VARIABLE:
cur->func = NULL;break;
case XSLT_FUNC_WHEN:
cur->func = NULL;break;
default:
if (cur->func == NULL) {
xsltPrintErrorContext(NULL, style, NULL);
xsltGenericError(xsltGenericErrorContext,
"xsltNewStylePreComp : no function for type %d\n", type);
style->errors++;
}
}
cur->next = style->preComps;
style->preComps = (xsltElemPreCompPtr) cur;
return(cur);
}
/**
* xsltFreeStylePreComp:
* @comp: an XSLT Style precomputed block
*
* Free up the memory allocated by @comp
*/
static void
xsltFreeStylePreComp(xsltStylePreCompPtr comp) {
if (comp == NULL)
return;
if (comp->stype != NULL)
xmlFree(comp->stype);
if (comp->order != NULL)
xmlFree(comp->order);
if (comp->use != NULL)
xmlFree(comp->use);
if (comp->name != NULL)
xmlFree(comp->name);
if (comp->ns != NULL)
xmlFree(comp->ns);
if (comp->mode != NULL)
xmlFree(comp->mode);
if (comp->modeURI != NULL)
xmlFree(comp->modeURI);
if (comp->test != NULL)
xmlFree(comp->test);
if (comp->select != NULL)
xmlFree(comp->select);
if (comp->filename != NULL)
xmlFree(comp->filename);
if (comp->numdata.level != NULL)
xmlFree(comp->numdata.level);
if (comp->numdata.count != NULL)
xmlFree(comp->numdata.count);
if (comp->numdata.from != NULL)
xmlFree(comp->numdata.from);
if (comp->numdata.value != NULL)
xmlFree(comp->numdata.value);
if (comp->numdata.format != NULL)
xmlFree(comp->numdata.format);
if (comp->comp != NULL)
xmlXPathFreeCompExpr(comp->comp);
if (comp->nsList != NULL)
xmlFree(comp->nsList);
xmlFree(comp);
}
/************************************************************************
* *
* XSLT-1.1 extensions *
* *
************************************************************************/
/**
* xsltDocumentComp:
* @style: the XSLT stylesheet
* @inst: the instruction in the stylesheet
*
* Pre process an XSLT-1.1 document element
*/
xsltElemPreCompPtr
xsltDocumentComp(xsltStylesheetPtr style, xmlNodePtr inst,
xsltTransformFunction function ATTRIBUTE_UNUSED) {
xsltStylePreCompPtr comp;
xmlChar *filename = NULL;
xmlChar *base = NULL;
xmlChar *URL = NULL;
comp = xsltNewStylePreComp(style, XSLT_FUNC_DOCUMENT);
if (comp == NULL)
return (NULL);
comp->inst = inst;
comp->ver11 = 0;
if (xmlStrEqual(inst->name, (const xmlChar *) "output")) {
#ifdef WITH_XSLT_DEBUG_EXTRA
xsltGenericDebug(xsltGenericDebugContext,
"Found saxon:output extension\n");
#endif
filename = xsltEvalStaticAttrValueTemplate(style, inst,
(const xmlChar *)"file",
XSLT_SAXON_NAMESPACE, &comp->has_filename);
} else if (xmlStrEqual(inst->name, (const xmlChar *) "write")) {
#ifdef WITH_XSLT_DEBUG_EXTRA
xsltGenericDebug(xsltGenericDebugContext,
"Found xalan:write extension\n");
#endif
comp->ver11 = 0; /* the filename need to be interpreted */
} else if (xmlStrEqual(inst->name, (const xmlChar *) "document")) {
filename = xsltEvalStaticAttrValueTemplate(style, inst,
(const xmlChar *)"href",
XSLT_XT_NAMESPACE, &comp->has_filename);
if (comp->has_filename == 0) {
#ifdef WITH_XSLT_DEBUG_EXTRA
xsltGenericDebug(xsltGenericDebugContext,
"Found xslt11:document construct\n");
#endif
filename = xsltEvalStaticAttrValueTemplate(style, inst,
(const xmlChar *)"href",
XSLT_NAMESPACE, &comp->has_filename);
comp->ver11 = 1;
} else {
#ifdef WITH_XSLT_DEBUG_EXTRA
xsltGenericDebug(xsltGenericDebugContext,
"Found xt:document extension\n");
#endif
comp->ver11 = 0;
}
}
if (!comp->has_filename) {
goto error;
}
if (filename != NULL) {
/*
* Compute output URL
*/
base = xmlNodeGetBase(inst->doc, inst);
URL = xmlBuildURI(filename, base);
if (URL == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsltDocumentComp: URL computation failed %s\n", filename);
style->warnings++;
comp->filename = xmlStrdup(filename);
} else {
comp->filename = URL;
}
} else {
comp->filename = NULL;
}
error:
if (base != NULL)
xmlFree(base);
if (filename != NULL)
xmlFree(filename);
return ((xsltElemPreCompPtr) comp);
}
/************************************************************************
* *
* Most of the XSLT-1.0 transformations *
* *
************************************************************************/
/**
* xsltSortComp:
* @style: the XSLT stylesheet
* @inst: the xslt sort node
*
* Process the xslt sort node on the source node
*/
static void
xsltSortComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_SORT);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
comp->stype = xsltEvalStaticAttrValueTemplate(style, inst,
(const xmlChar *)"data-type",
XSLT_NAMESPACE, &comp->has_stype);
if (comp->stype != NULL) {
if (xmlStrEqual(comp->stype, (const xmlChar *) "text"))
comp->number = 0;
else if (xmlStrEqual(comp->stype, (const xmlChar *) "number"))
comp->number = 1;
else {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsltSortComp: no support for data-type = %s\n", comp->stype);
comp->number = -1;
style->warnings++;
}
}
comp->order = xsltEvalStaticAttrValueTemplate(style, inst,
(const xmlChar *)"order",
XSLT_NAMESPACE, &comp->has_order);
if (comp->order != NULL) {
if (xmlStrEqual(comp->order, (const xmlChar *) "ascending"))
comp->descending = 0;
else if (xmlStrEqual(comp->order, (const xmlChar *) "descending"))
comp->descending = 1;
else {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsltSortComp: invalid value %s for order\n", comp->order);
comp->descending = -1;
style->warnings++;
}
}
/* TODO: xsl:sort lang attribute */
/* TODO: xsl:sort case-order attribute */
comp->select = xsltGetNsProp(inst,(const xmlChar *)"select", XSLT_NAMESPACE);
if (comp->select == NULL) {
/*
* The default value of the select attribute is ., which will
* cause the string-value of the current node to be used as
* the sort key.
*/
comp->select = xmlStrdup((const xmlChar *)".");
}
comp->comp = xmlXPathCompile(comp->select);
if (comp->comp == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsltSortComp: could not compile select expression '%s'\n",
comp->select);
style->errors++;
}
}
/**
* xsltCopyComp:
* @style: the XSLT stylesheet
* @inst: the xslt copy node
*
* Process the xslt copy node on the source node
*/
static void
xsltCopyComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_COPY);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
comp->use = xsltGetNsProp(inst, (const xmlChar *)"use-attribute-sets",
XSLT_NAMESPACE);
if (comp->use == NULL)
comp->has_use = 0;
else
comp->has_use = 1;
}
/**
* xsltTextComp:
* @style: a XSLT process context
* @inst: the xslt text node
*
* Process the xslt text node on the source node
*/
static void
xsltTextComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
xmlChar *prop;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_TEXT);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
comp->noescape = 0;
prop = xsltGetNsProp(inst,
(const xmlChar *)"disable-output-escaping",
XSLT_NAMESPACE);
if (prop != NULL) {
if (xmlStrEqual(prop, (const xmlChar *)"yes")) {
comp->noescape = 1;
} else if (!xmlStrEqual(prop,
(const xmlChar *)"no")){
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:text: disable-output-escaping allows only yes or no\n");
style->warnings++;
}
xmlFree(prop);
}
}
/**
* xsltElementComp:
* @style: a XSLT process context
* @inst: the xslt element node
*
* Process the xslt element node on the source node
*/
static void
xsltElementComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_ELEMENT);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
/*
* TODO: more computation can be done there, especially namespace lookup
*/
comp->name = xsltEvalStaticAttrValueTemplate(style, inst,
(const xmlChar *)"name",
XSLT_NAMESPACE, &comp->has_name);
comp->ns = xsltEvalStaticAttrValueTemplate(style, inst,
(const xmlChar *)"namespace",
XSLT_NAMESPACE, &comp->has_ns);
comp->use = xsltEvalStaticAttrValueTemplate(style, inst,
(const xmlChar *)"use-attribute-sets",
XSLT_NAMESPACE, &comp->has_use);
}
/**
* xsltAttributeComp:
* @style: a XSLT process context
* @inst: the xslt attribute node
*
* Process the xslt attribute node on the source node
*/
static void
xsltAttributeComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_ATTRIBUTE);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
/*
* TODO: more computation can be done there, especially namespace lookup
*/
comp->name = xsltEvalStaticAttrValueTemplate(style, inst,
(const xmlChar *)"name",
XSLT_NAMESPACE, &comp->has_name);
comp->ns = xsltEvalStaticAttrValueTemplate(style, inst,
(const xmlChar *)"namespace",
XSLT_NAMESPACE, &comp->has_ns);
}
/**
* xsltCommentComp:
* @style: a XSLT process context
* @inst: the xslt comment node
*
* Process the xslt comment node on the source node
*/
static void
xsltCommentComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_COMMENT);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
}
/**
* xsltProcessingInstructionComp:
* @style: a XSLT process context
* @inst: the xslt processing-instruction node
*
* Process the xslt processing-instruction node on the source node
*/
static void
xsltProcessingInstructionComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_PI);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
comp->name = xsltEvalStaticAttrValueTemplate(style, inst,
(const xmlChar *)"name",
XSLT_NAMESPACE, &comp->has_name);
}
/**
* xsltCopyOfComp:
* @style: a XSLT process context
* @inst: the xslt copy-of node
*
* Process the xslt copy-of node on the source node
*/
static void
xsltCopyOfComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_COPYOF);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
comp->select = xsltGetNsProp(inst, (const xmlChar *)"select",
XSLT_NAMESPACE);
if (comp->select == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:copy-of : select is missing\n");
style->errors++;
return;
}
comp->comp = xmlXPathCompile(comp->select);
if (comp->comp == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:copy-of : could not compile select expression '%s'\n",
comp->select);
style->errors++;
}
}
/**
* xsltValueOfComp:
* @style: a XSLT process context
* @inst: the xslt value-of node
*
* Process the xslt value-of node on the source node
*/
static void
xsltValueOfComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
xmlChar *prop;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_VALUEOF);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
prop = xsltGetNsProp(inst,
(const xmlChar *)"disable-output-escaping",
XSLT_NAMESPACE);
if (prop != NULL) {
if (xmlStrEqual(prop, (const xmlChar *)"yes")) {
comp->noescape = 1;
} else if (!xmlStrEqual(prop,
(const xmlChar *)"no")){
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:value-of : disable-output-escaping allows only yes or no\n");
style->warnings++;
}
xmlFree(prop);
}
comp->select = xsltGetNsProp(inst, (const xmlChar *)"select",
XSLT_NAMESPACE);
if (comp->select == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:value-of : select is missing\n");
style->errors++;
return;
}
comp->comp = xmlXPathCompile(comp->select);
if (comp->comp == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:value-of : could not compile select expression '%s'\n",
comp->select);
style->errors++;
}
}
/**
* xsltWithParamComp:
* @style: a XSLT process context
* @inst: the xslt with-param node
*
* Process the xslt with-param node on the source node
*/
static void
xsltWithParamComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
xmlChar *prop;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_WITHPARAM);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
/*
* The full namespace resolution can be done statically
*/
prop = xsltGetNsProp(inst, (const xmlChar *)"name", XSLT_NAMESPACE);
if (prop == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:with-param : name is missing\n");
style->errors++;
} else {
const xmlChar *URI;
URI = xsltGetQNameURI(inst, &prop);
if (prop == NULL) {
style->errors++;
} else {
comp->name = prop;
comp->has_name = 1;
if (URI != NULL) {
comp->ns = xmlStrdup(URI);
comp->has_ns = 1;
} else {
comp->has_ns = 0;
}
}
}
comp->select = xsltGetNsProp(inst, (const xmlChar *)"select",
XSLT_NAMESPACE);
if (comp->select != NULL) {
comp->comp = xmlXPathCompile(comp->select);
if (comp->comp == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:param : could not compile select expression '%s'\n",
comp->select);
style->errors++;
}
if (inst->children != NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:param : content should be empty since select is present \n");
style->warnings++;
}
}
}
/**
* xsltNumberComp:
* @style: a XSLT process context
* @cur: the xslt number node
*
* Process the xslt number node on the source node
*/
static void
xsltNumberComp(xsltStylesheetPtr style, xmlNodePtr cur) {
xsltStylePreCompPtr comp;
xmlChar *prop;
if ((style == NULL) || (cur == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_NUMBER);
if (comp == NULL)
return;
cur->_private = comp;
if ((style == NULL) || (cur == NULL))
return;
comp->numdata.doc = cur->doc;
comp->numdata.node = cur;
comp->numdata.value = xsltGetNsProp(cur, (const xmlChar *)"value",
XSLT_NAMESPACE);
prop = xsltEvalStaticAttrValueTemplate(style, cur,
(const xmlChar *)"format",
XSLT_NAMESPACE, &comp->numdata.has_format);
if (comp->numdata.has_format == 0) {
comp->numdata.format = xmlStrdup(BAD_CAST(""));
} else {
comp->numdata.format = prop;
}
comp->numdata.count = xsltGetNsProp(cur, (const xmlChar *)"count",
XSLT_NAMESPACE);
comp->numdata.from = xsltGetNsProp(cur, (const xmlChar *)"from",
XSLT_NAMESPACE);
prop = xsltGetNsProp(cur, (const xmlChar *)"level", XSLT_NAMESPACE);
if (prop != NULL) {
if (xmlStrEqual(prop, BAD_CAST("single")) ||
xmlStrEqual(prop, BAD_CAST("multiple")) ||
xmlStrEqual(prop, BAD_CAST("any"))) {
comp->numdata.level = prop;
} else {
xsltPrintErrorContext(NULL, style, cur);
xsltGenericError(xsltGenericErrorContext,
"xsl:number : invalid value %s for level\n", prop);
style->warnings++;
xmlFree(prop);
}
}
prop = xsltGetNsProp(cur, (const xmlChar *)"lang", XSLT_NAMESPACE);
if (prop != NULL) {
XSLT_TODO; /* xsl:number lang attribute */
xmlFree(prop);
}
prop = xsltGetNsProp(cur, (const xmlChar *)"letter-value", XSLT_NAMESPACE);
if (prop != NULL) {
if (xmlStrEqual(prop, BAD_CAST("alphabetic"))) {
xsltPrintErrorContext(NULL, style, cur);
xsltGenericError(xsltGenericErrorContext,
"xsl:number : letter-value 'alphabetic' not implemented\n");
style->warnings++;
XSLT_TODO; /* xsl:number letter-value attribute alphabetic */
} else if (xmlStrEqual(prop, BAD_CAST("traditional"))) {
xsltPrintErrorContext(NULL, style, cur);
xsltGenericError(xsltGenericErrorContext,
"xsl:number : letter-value 'traditional' not implemented\n");
style->warnings++;
XSLT_TODO; /* xsl:number letter-value attribute traditional */
} else {
xsltPrintErrorContext(NULL, style, cur);
xsltGenericError(xsltGenericErrorContext,
"xsl:number : invalid value %s for letter-value\n", prop);
style->warnings++;
}
xmlFree(prop);
}
prop = xsltGetNsProp(cur, (const xmlChar *)"grouping-separator",
XSLT_NAMESPACE);
if (prop != NULL) {
comp->numdata.groupingCharacter = prop[0];
xmlFree(prop);
}
prop = xsltGetNsProp(cur, (const xmlChar *)"grouping-size", XSLT_NAMESPACE);
if (prop != NULL) {
sscanf((char *)prop, "%d", &comp->numdata.digitsPerGroup);
xmlFree(prop);
} else {
comp->numdata.groupingCharacter = 0;
}
/* Set default values */
if (comp->numdata.value == NULL) {
if (comp->numdata.level == NULL) {
comp->numdata.level = xmlStrdup(BAD_CAST("single"));
}
}
}
/**
* xsltApplyImportsComp:
* @style: a XSLT process context
* @inst: the xslt apply-imports node
*
* Process the xslt apply-imports node on the source node
*/
static void
xsltApplyImportsComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_APPLYIMPORTS);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
}
/**
* xsltCallTemplateComp:
* @style: a XSLT process context
* @inst: the xslt call-template node
*
* Process the xslt call-template node on the source node
*/
static void
xsltCallTemplateComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
xmlChar *prop;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_CALLTEMPLATE);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
/*
* The full template resolution can be done statically
*/
prop = xsltGetNsProp(inst, (const xmlChar *)"name", XSLT_NAMESPACE);
if (prop == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:call-template : name is missing\n");
style->errors++;
} else {
const xmlChar *URI;
URI = xsltGetQNameURI(inst, &prop);
if (prop == NULL) {
style->errors++;
} else {
comp->name = prop;
comp->has_name = 1;
if (URI != NULL) {
comp->ns = xmlStrdup(URI);
comp->has_ns = 1;
} else {
comp->has_ns = 0;
}
}
comp->templ = NULL;
}
}
/**
* xsltApplyTemplatesComp:
* @style: a XSLT process context
* @inst: the apply-templates node
*
* Process the apply-templates node on the source node
*/
static void
xsltApplyTemplatesComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
xmlChar *prop;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_APPLYTEMPLATES);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
/*
* Get mode if any
*/
prop = xsltGetNsProp(inst, (const xmlChar *)"mode", XSLT_NAMESPACE);
if (prop != NULL) {
const xmlChar *URI;
URI = xsltGetQNameURI(inst, &prop);
if (prop == NULL) {
style->errors++;
} else {
comp->mode = prop;
if (URI != NULL) {
comp->modeURI = xmlStrdup(URI);
} else {
comp->modeURI = NULL;
}
}
}
comp->select = xsltGetNsProp(inst, (const xmlChar *)"select",
XSLT_NAMESPACE);
if (comp->select != NULL) {
comp->comp = xmlXPathCompile(comp->select);
if (comp->comp == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:apply-templates : could not compile select expression '%s'\n",
comp->select);
style->errors++;
}
}
/* TODO: handle (or skip) the xsl:sort and xsl:with-param */
}
/**
* xsltChooseComp:
* @style: a XSLT process context
* @inst: the xslt choose node
*
* Process the xslt choose node on the source node
*/
static void
xsltChooseComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_CHOOSE);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
}
/**
* xsltIfComp:
* @style: a XSLT process context
* @inst: the xslt if node
*
* Process the xslt if node on the source node
*/
static void
xsltIfComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_IF);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
comp->test = xsltGetNsProp(inst, (const xmlChar *)"test", XSLT_NAMESPACE);
if (comp->test == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:if : test is not defined\n");
style->errors++;
return;
}
comp->comp = xmlXPathCompile(comp->test);
if (comp->comp == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:if : could not compile test expression '%s'\n",
comp->test);
style->errors++;
}
}
/**
* xsltWhenComp:
* @style: a XSLT process context
* @inst: the xslt if node
*
* Process the xslt if node on the source node
*/
static void
xsltWhenComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_WHEN);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
comp->test = xsltGetNsProp(inst, (const xmlChar *)"test", XSLT_NAMESPACE);
if (comp->test == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:when : test is not defined\n");
style->errors++;
return;
}
comp->comp = xmlXPathCompile(comp->test);
if (comp->comp == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:when : could not compile test expression '%s'\n",
comp->test);
style->errors++;
}
}
/**
* xsltForEachComp:
* @style: a XSLT process context
* @inst: the xslt for-each node
*
* Process the xslt for-each node on the source node
*/
static void
xsltForEachComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_FOREACH);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
comp->select = xsltGetNsProp(inst, (const xmlChar *)"select",
XSLT_NAMESPACE);
if (comp->select == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:for-each : select is missing\n");
style->errors++;
} else {
comp->comp = xmlXPathCompile(comp->select);
if (comp->comp == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:for-each : could not compile select expression '%s'\n",
comp->select);
style->errors++;
}
}
/* TODO: handle and skip the xsl:sort */
}
/**
* xsltVariableComp:
* @style: a XSLT process context
* @inst: the xslt variable node
*
* Process the xslt variable node on the source node
*/
static void
xsltVariableComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
xmlChar *prop;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_VARIABLE);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
/*
* The full template resolution can be done statically
*/
prop = xsltGetNsProp(inst, (const xmlChar *)"name", XSLT_NAMESPACE);
if (prop == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:variable : name is missing\n");
style->errors++;
} else {
const xmlChar *URI;
URI = xsltGetQNameURI(inst, &prop);
if (prop == NULL) {
style->errors++;
} else {
comp->name = prop;
comp->has_name = 1;
if (URI != NULL) {
comp->ns = xmlStrdup(URI);
comp->has_ns = 1;
} else {
comp->has_ns = 0;
}
}
}
comp->select = xsltGetNsProp(inst, (const xmlChar *)"select",
XSLT_NAMESPACE);
if (comp->select != NULL) {
comp->comp = xmlXPathCompile(comp->select);
if (comp->comp == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:variable : could not compile select expression '%s'\n",
comp->select);
style->errors++;
}
if (inst->children != NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:variable : content should be empty since select is present \n");
style->warnings++;
}
}
}
/**
* xsltParamComp:
* @style: a XSLT process context
* @inst: the xslt param node
*
* Process the xslt param node on the source node
*/
static void
xsltParamComp(xsltStylesheetPtr style, xmlNodePtr inst) {
xsltStylePreCompPtr comp;
xmlChar *prop;
if ((style == NULL) || (inst == NULL))
return;
comp = xsltNewStylePreComp(style, XSLT_FUNC_PARAM);
if (comp == NULL)
return;
inst->_private = comp;
comp->inst = inst;
/*
* The full template resolution can be done statically
*/
prop = xsltGetNsProp(inst, (const xmlChar *)"name", XSLT_NAMESPACE);
if (prop == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:param : name is missing\n");
style->errors++;
} else {
const xmlChar *URI;
URI = xsltGetQNameURI(inst, &prop);
if (prop == NULL) {
style->errors++;
} else {
comp->name = prop;
comp->has_name = 1;
if (URI != NULL) {
comp->ns = xmlStrdup(URI);
comp->has_ns = 1;
} else {
comp->has_ns = 0;
}
}
}
comp->select = xsltGetNsProp(inst, (const xmlChar *)"select",
XSLT_NAMESPACE);
if (comp->select != NULL) {
comp->comp = xmlXPathCompile(comp->select);
if (comp->comp == NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:param : could not compile select expression '%s'\n",
comp->select);
style->errors++;
}
if (inst->children != NULL) {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsl:param : content should be empty since select is present \n");
style->warnings++;
}
}
}
/************************************************************************
* *
* Generic interface *
* *
************************************************************************/
/**
* xsltFreeStylePreComps:
* @style: an XSLT transformation context
*
* Free up the memory allocated by all precomputed blocks
*/
void
xsltFreeStylePreComps(xsltStylesheetPtr style) {
xsltElemPreCompPtr cur, next;
if (style == NULL)
return;
cur = style->preComps;
while (cur != NULL) {
next = cur->next;
if (cur->type == XSLT_FUNC_EXTENSION)
cur->free(cur);
else
xsltFreeStylePreComp((xsltStylePreCompPtr) cur);
cur = next;
}
}
/**
* xsltStylePreCompute:
* @style: the XSLT stylesheet
* @inst: the instruction in the stylesheet
*
* Precompute an XSLT stylesheet element
*/
void
xsltStylePreCompute(xsltStylesheetPtr style, xmlNodePtr inst) {
if (inst->_private != NULL)
return;
if (IS_XSLT_ELEM(inst)) {
xsltStylePreCompPtr cur;
if (IS_XSLT_NAME(inst, "apply-templates")) {
xsltApplyTemplatesComp(style, inst);
} else if (IS_XSLT_NAME(inst, "with-param")) {
xsltWithParamComp(style, inst);
} else if (IS_XSLT_NAME(inst, "value-of")) {
xsltValueOfComp(style, inst);
} else if (IS_XSLT_NAME(inst, "copy")) {
xsltCopyComp(style, inst);
} else if (IS_XSLT_NAME(inst, "copy-of")) {
xsltCopyOfComp(style, inst);
} else if (IS_XSLT_NAME(inst, "if")) {
xsltIfComp(style, inst);
} else if (IS_XSLT_NAME(inst, "when")) {
xsltWhenComp(style, inst);
} else if (IS_XSLT_NAME(inst, "choose")) {
xsltChooseComp(style, inst);
} else if (IS_XSLT_NAME(inst, "for-each")) {
xsltForEachComp(style, inst);
} else if (IS_XSLT_NAME(inst, "apply-imports")) {
xsltApplyImportsComp(style, inst);
} else if (IS_XSLT_NAME(inst, "attribute")) {
xsltAttributeComp(style, inst);
} else if (IS_XSLT_NAME(inst, "element")) {
xsltElementComp(style, inst);
} else if (IS_XSLT_NAME(inst, "text")) {
xsltTextComp(style, inst);
} else if (IS_XSLT_NAME(inst, "sort")) {
xsltSortComp(style, inst);
} else if (IS_XSLT_NAME(inst, "comment")) {
xsltCommentComp(style, inst);
} else if (IS_XSLT_NAME(inst, "number")) {
xsltNumberComp(style, inst);
} else if (IS_XSLT_NAME(inst, "processing-instruction")) {
xsltProcessingInstructionComp(style, inst);
} else if (IS_XSLT_NAME(inst, "call-template")) {
xsltCallTemplateComp(style, inst);
} else if (IS_XSLT_NAME(inst, "param")) {
xsltParamComp(style, inst);
} else if (IS_XSLT_NAME(inst, "variable")) {
xsltVariableComp(style, inst);
} else if (IS_XSLT_NAME(inst, "otherwise")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "template")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "output")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "preserve-space")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "strip-space")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "stylesheet")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "transform")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "key")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "message")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "attribute-set")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "namespace-alias")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "include")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "import")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "decimal-format")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "fallback")) {
/* no computation needed */
return;
} else if (IS_XSLT_NAME(inst, "document")) {
inst->_private = (void *) xsltDocumentComp(style, inst,
(xsltTransformFunction) xsltDocumentElem);
} else {
xsltPrintErrorContext(NULL, style, inst);
xsltGenericError(xsltGenericErrorContext,
"xsltStylePreCompute: unknown xsl:%s\n", inst->name);
style->warnings++;
}
/*
* Add the namespace lookup here, this code can be shared by
* all precomputations.
*/
cur = (xsltStylePreCompPtr) inst->_private;
if (cur != NULL) {
int i = 0;
cur->nsList = xmlGetNsList(inst->doc, inst);
if (cur->nsList != NULL) {
while (cur->nsList[i] != NULL)
i++;
}
cur->nsNr = i;
}
} else {
inst->_private =
(void *) xsltPreComputeExtModuleElement(style, inst);
/*
* Unknown element, maybe registered at the context
* level. Mark it for later recognition.
*/
if (inst->_private == NULL)
inst->_private = (void *) xsltExtMarker;
}
}