![]() | ![]() | ![]() | Gnome XSLT Library Reference Manual | ![]() |
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xsltInternals —
#define XSLT_MAX_SORT #define XSLT_PAT_NO_PRIORITY struct xsltRuntimeExtra; typedef xsltRuntimeExtraPtr; #define XSLT_RUNTIME_EXTRA_LST (ctxt, nr) #define XSLT_RUNTIME_EXTRA_FREE (ctxt, nr) #define XSLT_RUNTIME_EXTRA (ctxt, nr) struct xsltTemplate; typedef xsltTemplatePtr; struct xsltDecimalFormat; typedef xsltDecimalFormatPtr; struct xsltDocument; typedef xsltDocumentPtr; struct xsltTransformContext; typedef xsltTransformContextPtr; struct xsltElemPreComp; typedef xsltElemPreCompPtr; void (*xsltTransformFunction) (xsltTransformContextPtr ctxt,xmlNodePtr node,xmlNodePtr inst, xsltElemPreCompPtr comp); void (*xsltSortFunc) (xsltTransformContextPtr ctxt,xmlNodePtr *sorts, int nbsorts); enum xsltStyleType; void (*xsltElemPreCompDeallocator) (xsltElemPreCompPtr comp); struct xsltStylePreComp; typedef xsltStylePreCompPtr; struct xsltStackElem; typedef xsltStackElemPtr; struct xsltStylesheet; typedef xsltStylesheetPtr; enum xsltOutputType; enum xsltTransformState; #define CHECK_STOPPED #define CHECK_STOPPEDE #define CHECK_STOPPED0 xsltStylesheetPtr xsltNewStylesheet (void); xsltStylesheetPtr xsltParseStylesheetFile (constxmlChar *filename); void xsltFreeStylesheet (xsltStylesheetPtr sheet); int xsltIsBlank (xmlChar *str); void xsltFreeStackElemList (xsltStackElemPtr elem); xsltDecimalFormatPtr xsltDecimalFormatGetByName (xsltStylesheetPtr sheet,xmlChar *name); xsltStylesheetPtr xsltParseStylesheetProcess (xsltStylesheetPtr ret,xmlDocPtr doc); void xsltParseStylesheetOutput (xsltStylesheetPtr style,xmlNodePtr cur); xsltStylesheetPtr xsltParseStylesheetDoc (xmlDocPtr doc); xsltStylesheetPtr xsltParseStylesheetImportedDoc (xmlDocPtr doc); xsltStylesheetPtr xsltLoadStylesheetPI (xmlDocPtr doc); void xsltNumberFormat (xsltTransformContextPtr ctxt, xsltNumberDataPtr data,xmlNodePtr node);xmlXPathError xsltFormatNumberConversion (xsltDecimalFormatPtr self,xmlChar *format,double number,xmlChar **result); void xsltParseTemplateContent (xsltStylesheetPtr style,xmlNodePtr templ); int xsltAllocateExtra (xsltStylesheetPtr style); int xsltAllocateExtraCtxt (xsltTransformContextPtr ctxt);xmlDocPtr xsltCreateRVT (xsltTransformContextPtr ctxt); int xsltRegisterTmpRVT (xsltTransformContextPtr ctxt,xmlDocPtr RVT); int xsltRegisterPersistRVT (xsltTransformContextPtr ctxt,xmlDocPtr RVT); void xsltFreeRVTs (xsltTransformContextPtr ctxt);
#define XSLT_PAT_NO_PRIORITY -12345789
Specific value for pattern without priority expressed.
struct xsltRuntimeExtra { void *info; /* pointer to the extra data */ xmlFreeFunc deallocate; /* pointer to the deallocation routine */ void *val; /* data not needing deallocation */ };
Extra information added to the transformation context.
#define XSLT_RUNTIME_EXTRA_LST(ctxt, nr) (ctxt)->extras[(nr)].info
Macro used to access extra information stored in the context
ctxt : | the transformation context |
nr : | the index |
#define XSLT_RUNTIME_EXTRA_FREE(ctxt, nr) (ctxt)->extras[(nr)].deallocate
Macro used to free extra information stored in the context
ctxt : | the transformation context |
nr : | the index |
#define XSLT_RUNTIME_EXTRA(ctxt, nr) (ctxt)->extras[(nr)].val
Macro used to define extra information stored in the context
ctxt : | the transformation context |
nr : | the index |
struct xsltTemplate { struct _xsltTemplate *next;/* chained list sorted by priority */ struct _xsltStylesheet *style;/* the containing stylesheet */ xmlChar *match; /* the matching string */ float priority; /* as given from the stylesheet, not computed */ xmlChar *name; /* the local part of the name QName */ xmlChar *nameURI; /* the URI part of the name QName */ xmlChar *mode; /* the local part of the mode QName */ xmlChar *modeURI; /* the URI part of the mode QName */ xmlNodePtr content; /* the template replacement value */ xmlNodePtr elem; /* the source element */ int inheritedNsNr; /* number of inherited namespaces */ xmlNsPtr *inheritedNs;/* inherited non-excluded namespaces */ /* Profiling informations */ int nbCalls; /* the number of time the template was called */ unsigned long time; /* the time spent in this template */ };
The in-memory structure corresponding to an XSLT Template.
struct xsltDecimalFormat { struct _xsltDecimalFormat *next; /* chained list */ xmlChar *name; /* Used for interpretation of pattern */ xmlChar *digit; xmlChar *patternSeparator; /* May appear in result */ xmlChar *minusSign; xmlChar *infinity; xmlChar *noNumber; /* Not-a-number */ /* Used for interpretation of pattern and may appear in result */ xmlChar *decimalPoint; xmlChar *grouping; xmlChar *percent; xmlChar *permille; xmlChar *zeroDigit; };
Data structure of decimal-format.
struct xsltDocument { struct _xsltDocument *next; /* documents are kept in a chained list */ int main; /* is this the main document */ xmlDocPtr doc; /* the parsed document */ void *keys; /* key tables storage */ };
Data structure associated to a parsed document.
struct xsltTransformContext { xsltStylesheetPtr style; /* the stylesheet used */ xsltOutputType type; /* the type of output */ xsltTemplatePtr templ; /* the current template */ int templNr; /* Nb of templates in the stack */ int templMax; /* Size of the templtes stack */ xsltTemplatePtr *templTab; /* the template stack */ xsltStackElemPtr vars; /* the current variable list */ int varsNr; /* Nb of variable list in the stack */ int varsMax; /* Size of the variable list stack */ xsltStackElemPtr *varsTab; /* the variable list stack */ int varsBase; /* the var base for current templ */ /* * Extensions */ xmlHashTablePtr extFunctions; /* the extension functions */ xmlHashTablePtr extElements; /* the extension elements */ xmlHashTablePtr extInfos; /* the extension data */ const xmlChar *mode; /* the current mode */ const xmlChar *modeURI; /* the current mode URI */ xsltDocumentPtr docList; /* the document list */ xsltDocumentPtr document; /* the current document */ xmlNodePtr node; /* the current node being processed */ xmlNodeSetPtr nodeList; /* the current node list */ /* xmlNodePtr current; the node */ xmlDocPtr output; /* the resulting document */ xmlNodePtr insert; /* the insertion node */ xmlXPathContextPtr xpathCtxt; /* the XPath context */ xsltTransformState state; /* the current state */ /* * Global variables */ xmlHashTablePtr globalVars; /* the global variables and params */ xmlNodePtr inst; /* the instruction in the stylesheet */ int xinclude; /* should XInclude be processed */ const char * outputFile; /* the output URI if known */ int profile; /* is this run profiled */ long prof; /* the current profiled value */ int profNr; /* Nb of templates in the stack */ int profMax; /* Size of the templtaes stack */ long *profTab; /* the profile template stack */ void *_private; /* user defined data */ int extrasNr; /* the number of extras used */ int extrasMax; /* the number of extras allocated */ xsltRuntimeExtraPtr extras; /* extra per runtime informations */ xsltDocumentPtr styleList; /* the stylesheet docs list */ void * sec; /* the security preferences if any */ xmlGenericErrorFunc error; /* a specific error handler */ void * errctx; /* context for the error handler */ xsltSortFunc sortfunc; /* a ctxt specific sort routine */ /* * handling of temporary Result Value Tree */ xmlDocPtr tmpRVT; /* list of RVT without persistance */ xmlDocPtr persistRVT; /* list of persistant RVTs */ int ctxtflags; /* context processing flags */ /* * Speed optimization when coalescing text nodes */ const xmlChar *lasttext; /* last text node content */ unsigned int lasttsize; /* last text node size */ unsigned int lasttuse; /* last text node use */ };
struct xsltElemPreComp { xsltElemPreCompPtr next; /* chained list */ xsltStyleType type; /* type of the element */ xsltTransformFunction func; /* handling function */ xmlNodePtr inst; /* the instruction */ /* end of common part */ xsltElemPreCompDeallocator free; /* the deallocator */ };
The in-memory structure corresponding to element precomputed data, designed to be extended by extension implementors.
void (*xsltTransformFunction) (xsltTransformContextPtr ctxt,xmlNodePtr node,xmlNodePtr inst, xsltElemPreCompPtr comp);
Signature of the function associated to elements part of the stylesheet language like xsl:if or xsl:apply-templates.
ctxt : | the XSLT transformation context |
node : | the input node |
inst : | the stylesheet node |
comp : | the compiled information from the stylesheet |
void (*xsltSortFunc) (xsltTransformContextPtr ctxt,xmlNodePtr *sorts, int nbsorts);
Signature of the function to use during sorting
ctxt : | a transformation context |
sorts : | the node-set to sort |
nbsorts : | the number of sorts |
typedef enum { XSLT_FUNC_COPY=1, XSLT_FUNC_SORT, XSLT_FUNC_TEXT, XSLT_FUNC_ELEMENT, XSLT_FUNC_ATTRIBUTE, XSLT_FUNC_COMMENT, XSLT_FUNC_PI, XSLT_FUNC_COPYOF, XSLT_FUNC_VALUEOF, XSLT_FUNC_NUMBER, XSLT_FUNC_APPLYIMPORTS, XSLT_FUNC_CALLTEMPLATE, XSLT_FUNC_APPLYTEMPLATES, XSLT_FUNC_CHOOSE, XSLT_FUNC_IF, XSLT_FUNC_FOREACH, XSLT_FUNC_DOCUMENT, XSLT_FUNC_WITHPARAM, XSLT_FUNC_PARAM, XSLT_FUNC_VARIABLE, XSLT_FUNC_WHEN, XSLT_FUNC_EXTENSION } xsltStyleType;
void (*xsltElemPreCompDeallocator) (xsltElemPreCompPtr comp);
Deallocates an xsltElemPreComp structure.
comp : | the xsltElemPreComp to free up |
struct xsltStylePreComp { xsltElemPreCompPtr next; /* chained list */ xsltStyleType type; /* type of the element */ xsltTransformFunction func; /* handling function */ xmlNodePtr inst; /* the instruction */ /* * Pre computed values. */ xmlChar *stype; /* sort */ int has_stype; /* sort */ int number; /* sort */ xmlChar *order; /* sort */ int has_order; /* sort */ int descending; /* sort */ xmlChar *lang; /* sort */ int has_lang; /* sort */ xmlChar *case_order; /* sort */ int lower_first; /* sort */ xmlChar *use; /* copy, element */ int has_use; /* copy, element */ int noescape; /* text */ xmlChar *name; /* element, attribute, pi */ int has_name; /* element, attribute, pi */ xmlChar *ns; /* element */ int has_ns; /* element */ xmlChar *mode; /* apply-templates */ xmlChar *modeURI; /* apply-templates */ xmlChar *test; /* if */ xsltTemplatePtr templ; /* call-template */ xmlChar *select; /* sort, copy-of, value-of, apply-templates */ int ver11; /* document */ xmlChar *filename; /* document URL */ int has_filename; /* document */ xsltNumberData numdata; /* number */ xmlXPathCompExprPtr comp; /* a precompiled XPath expression */ xmlNsPtr *nsList; /* the namespaces in scope */ int nsNr; /* the number of namespaces in scope */ };
The in-memory structure corresponding to XSLT stylesheet constructs precomputed data.
struct xsltStackElem { struct _xsltStackElem *next;/* chained list */ xsltStylePreCompPtr comp; /* the compiled form */ int computed; /* was the evaluation done */ xmlChar *name; /* the local part of the name QName */ xmlChar *nameURI; /* the URI part of the name QName */ xmlChar *select; /* the eval string */ xmlNodePtr tree; /* the tree if no eval string or the location */ xmlXPathObjectPtr value; /* The value if computed */ };
struct xsltStylesheet { /* * The stylesheet import relation is kept as a tree. */ struct _xsltStylesheet *parent; struct _xsltStylesheet *next; struct _xsltStylesheet *imports; xsltDocumentPtr docList; /* the include document list */ /* * General data on the style sheet document. */ xmlDocPtr doc; /* the parsed XML stylesheet */ xmlHashTablePtr stripSpaces;/* the hash table of the strip-space and preserve space elements */ int stripAll; /* strip-space * (1) preserve-space * (-1) */ xmlHashTablePtr cdataSection;/* the hash table of the cdata-section */ /* * Global variable or parameters. */ xsltStackElemPtr variables; /* linked list of param and variables */ /* * Template descriptions. */ xsltTemplatePtr templates; /* the ordered list of templates */ void *templatesHash; /* hash table or wherever compiled templates informations are stored */ void *rootMatch; /* template based on / */ void *keyMatch; /* template based on key() */ void *elemMatch; /* template based on * */ void *attrMatch; /* template based on @* */ void *parentMatch; /* template based on .. */ void *textMatch; /* template based on text() */ void *piMatch; /* template based on processing-instruction() */ void *commentMatch; /* template based on comment() */ /* * Namespace aliases. */ xmlHashTablePtr nsAliases; /* the namespace alias hash tables */ /* * Attribute sets. */ xmlHashTablePtr attributeSets;/* the attribute sets hash tables */ /* * Namespaces. */ xmlHashTablePtr nsHash; /* the set of namespaces in use */ void *nsDefs; /* the namespaces defined */ /* * Key definitions. */ void *keys; /* key definitions */ /* * Output related stuff. */ xmlChar *method; /* the output method */ xmlChar *methodURI; /* associated namespace if any */ xmlChar *version; /* version string */ xmlChar *encoding; /* encoding string */ int omitXmlDeclaration; /* omit-xml-declaration = "yes" | "no" */ /* * Number formatting. */ xsltDecimalFormatPtr decimalFormat; int standalone; /* standalone = "yes" | "no" */ xmlChar *doctypePublic; /* doctype-public string */ xmlChar *doctypeSystem; /* doctype-system string */ int indent; /* should output being indented */ xmlChar *mediaType; /* media-type string */ /* * Precomputed blocks. */ xsltElemPreCompPtr preComps;/* list of precomputed blocks */ int warnings; /* number of warnings found at compilation */ int errors; /* number of errors found at compilation */ xmlChar *exclPrefix; /* last excluded prefixes */ xmlChar **exclPrefixTab; /* array of excluded prefixes */ int exclPrefixNr; /* number of excluded prefixes in scope */ int exclPrefixMax; /* size of the array */ void *_private; /* user defined data */ /* * Extensions. */ xmlHashTablePtr extInfos; /* the extension data */ int extrasNr; /* the number of extras required */ };
typedef enum { XSLT_OUTPUT_XML = 0, XSLT_OUTPUT_HTML, XSLT_OUTPUT_TEXT } xsltOutputType;
typedef enum { XSLT_STATE_OK = 0, XSLT_STATE_ERROR, XSLT_STATE_STOPPED } xsltTransformState;
#define CHECK_STOPPED if (ctxt->state == XSLT_STATE_STOPPED) return;
Macro to check if the XSLT processing should be stopped. Will return from the function.
#define CHECK_STOPPEDE if (ctxt->state == XSLT_STATE_STOPPED) goto error;
Macro to check if the XSLT processing should be stopped. Will goto the error: label.
#define CHECK_STOPPED0 if (ctxt->state == XSLT_STATE_STOPPED) return(0);
Macro to check if the XSLT processing should be stopped. Will return from the function with a 0 value.
xsltStylesheetPtr xsltNewStylesheet (void);
Create a new XSLT Stylesheet
Returns : | the newly allocated xsltStylesheetPtr or NULL in case of error |
xsltStylesheetPtr xsltParseStylesheetFile (constxmlChar *filename);
Load and parse an XSLT stylesheet
filename : | the filename/URL to the stylesheet |
Returns : | a new XSLT stylesheet structure. |
void xsltFreeStylesheet (xsltStylesheetPtr sheet);
Free up the memory allocated by sheet
sheet : | an XSLT stylesheet |
int xsltIsBlank (xmlChar *str);
Check if a string is ignorable
str : | a string |
Returns : | 1 if the string is NULL or made of blanks chars, 0 otherwise |
void xsltFreeStackElemList (xsltStackElemPtr elem);
Free up the memory allocated by elem
elem : | an XSLT stack element |
xsltDecimalFormatPtr xsltDecimalFormatGetByName (xsltStylesheetPtr sheet,xmlChar *name);
Find decimal-format by name
sheet : | the XSLT stylesheet |
name : | the decimal-format name to find |
Returns : | the xsltDecimalFormatPtr |
xsltStylesheetPtr xsltParseStylesheetProcess (xsltStylesheetPtr ret,xmlDocPtr doc);
parse an XSLT stylesheet adding the associated structures
ret : | the XSLT stylesheet |
doc : | and xmlDoc parsed XML |
Returns : | the value of the 'ret' parameter if everything went right, NULL if something went amiss. |
void xsltParseStylesheetOutput (xsltStylesheetPtr style,xmlNodePtr cur);
parse an XSLT stylesheet output element and record information related to the stylesheet output
style : | the XSLT stylesheet |
cur : | the "output" element |
xsltStylesheetPtr xsltParseStylesheetDoc (xmlDocPtr doc);
parse an XSLT stylesheet building the associated structures
doc : | and xmlDoc parsed XML |
Returns : | a new XSLT stylesheet structure. |
xsltStylesheetPtr xsltParseStylesheetImportedDoc (xmlDocPtr doc);
parse an XSLT stylesheet building the associated structures except the processing not needed for imported documents.
doc : | and xmlDoc parsed XML |
Returns : | a new XSLT stylesheet structure. |
xsltStylesheetPtr xsltLoadStylesheetPI (xmlDocPtr doc);
This function tries to locate the stylesheet PI in the given document If found, and if contained within the document, it will extract that subtree to build the stylesheet to process doc (doc itself will be modified). If found but referencing an external document it will attempt to load it and generate a stylesheet from it. In both cases, the resulting stylesheet and the document need to be freed once the transformation is done.
doc : | a document to process |
Returns : | a new XSLT stylesheet structure or NULL if not found. |
void xsltNumberFormat (xsltTransformContextPtr ctxt, xsltNumberDataPtr data,xmlNodePtr node);
Convert one number.
ctxt : | the XSLT transformation context |
data : | the formatting informations |
node : | the data to format |
xmlXPathError xsltFormatNumberConversion (xsltDecimalFormatPtr self,xmlChar *format,double number,xmlChar **result);
format-
http://java.sun.com/products/jdk/1.1/docs/api/java.text.DecimalFormat.html
Structure:
pattern := subpattern{;subpattern} subpattern := {prefix}integer{.fraction}{suffix} prefix := '\\u0000'..'\\uFFFD' - specialCharacters suffix := '\\u0000'..'\\uFFFD' - specialCharacters integer := '#'* '0'* '0' fraction := '0'* '#'*
Notation: X* 0 or more instances of X (X | Y) either X or Y. X..Y any character from X up to Y, inclusive. S - T characters in S, except those in T
Special Characters:
Symbol Meaning 0 a digit # a digit, zero shows as absent . placeholder for decimal separator , placeholder for grouping separator. ; separates formats. - default negative prefix. % multiply by 100 and show as percentage ? multiply by 1000 and show as per mille X any other characters can be used in the prefix or suffix ' used to quote special characters in a prefix or suffix.
self : | the decimal format |
format : | the format requested |
number : | the value to format |
result : | the place to ouput the result |
Returns : | a possible XPath error |
void xsltParseTemplateContent (xsltStylesheetPtr style,xmlNodePtr templ);
parse a template content-model Clean-up the template content from unwanted ignorable blank nodes and process xslt:text
style : | the XSLT stylesheet |
templ : | the container node (can be a document for literal results) |
int xsltAllocateExtra (xsltStylesheetPtr style);
Allocate an extra runtime information slot statically while compiling the stylesheet and return its number
style : | an XSLT stylesheet |
Returns : | the number of the slot |
int xsltAllocateExtraCtxt (xsltTransformContextPtr ctxt);
Allocate an extra runtime information slot at run-time and return its number This make sure there is a slot ready in the transformation context
ctxt : | an XSLT transformation context |
Returns : | the number of the slot |
xmlDocPtr xsltCreateRVT (xsltTransformContextPtr ctxt);
Create a result value tree
ctxt : | an XSLT transformation context |
Returns : | the result value tree or NULL in case of error |
int xsltRegisterTmpRVT (xsltTransformContextPtr ctxt,xmlDocPtr RVT);
Register the result value tree for destruction at the end of the context
ctxt : | an XSLT transformation context |
RVT : | a result value tree |
Returns : | 0 in case of success and -1 in case of error. |
int xsltRegisterPersistRVT (xsltTransformContextPtr ctxt,xmlDocPtr RVT);
Register the result value tree for destruction at the end of the processing
ctxt : | an XSLT transformation context |
RVT : | a result value tree |
Returns : | 0 in case of success and -1 in case of error. |
void xsltFreeRVTs (xsltTransformContextPtr ctxt);
Free all the registered result value tree of the transformation
ctxt : | an XSLT transformation context |
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