mirror of
https://gitlab.gnome.org/GNOME/libxslt
synced 2025-07-29 15:41:13 +03:00
xsltlocale: Make API platform-independent
Make xsltlocale.h more private. This really is an internal header. Use LCMapStringW on Windows. Make the API platform-independent by passing locales as `void *`. Add support for custom locale handlers in a transform context. Update ICU example to use these handlers.
This commit is contained in:
Nick Wellnhofer
@ -1,298 +1,146 @@
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/**
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* xsltICUSort.c: module provided by Richard Jinks to provide a
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* sort function replacement using ICU, it is not
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* included in standard due to the size of the ICU
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* xsltICUSort.c: module to provide a sort function replacement using ICU,
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* it is not included in standard due to the size of the ICU
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* library
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*
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* See http://mail.gnome.org/archives/xslt/2002-November/msg00093.html
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* http://oss.software.ibm.com/icu/index.html
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*
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* Copyright Richard Jinks
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* Requires libxslt 1.1.38
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*/
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#define IN_LIBXSLT
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#include "libxslt.h"
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#include <libxml/parserInternals.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 "transform.h"
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#include "templates.h"
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#include <libxslt/transform.h>
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#include <libxslt/xsltutils.h>
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#include <unicode/ucnv.h>
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#include <unicode/ustring.h>
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#include <unicode/utypes.h>
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#include <unicode/uloc.h>
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#include <unicode/ucol.h>
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/**
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* xsltICUSortFunction:
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* @ctxt: a XSLT process context
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* @sorts: array of sort nodes
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* @nbsorts: the number of sorts in the array
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* xsltICUNewLocale:
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* @lang: lang
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*
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* reorder the current node list accordingly to the set of sorting
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* requirement provided by the arry of nodes.
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* uses the ICU library
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* Create a new ICU collator.
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*/
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void
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xsltICUSortFunction(xsltTransformContextPtr ctxt, xmlNodePtr *sorts,
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int nbsorts) {
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xmlXPathObjectPtr *resultsTab[XSLT_MAX_SORT];
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xmlXPathObjectPtr *results = NULL, *res;
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xmlNodeSetPtr list = NULL;
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int len = 0;
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int i, j, incr;
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int tst;
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int depth;
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xmlNodePtr node;
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xmlXPathObjectPtr tmp;
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const xsltStylePreComp *comp;
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int number[XSLT_MAX_SORT], desc[XSLT_MAX_SORT];
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void *
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xsltICUNewLocale(const xmlChar *lang, int lowerFirst) {
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UCollator *coll;
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UErrorCode status = U_ZERO_ERROR;
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/* Start ICU change */
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UCollator *coll = 0;
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UConverter *conv;
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UErrorCode status;
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UChar *target,*target2;
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int targetlen, target2len;
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/* End ICU change */
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if ((ctxt == NULL) || (sorts == NULL) || (nbsorts <= 0) ||
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(nbsorts >= XSLT_MAX_SORT))
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return;
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if (sorts[0] == NULL)
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return;
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comp = sorts[0]->_private;
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if (comp == NULL)
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return;
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list = ctxt->nodeList;
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if ((list == NULL) || (list->nodeNr <= 1))
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return; /* nothing to do */
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for (j = 0; j < nbsorts; j++) {
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comp = sorts[j]->_private;
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if ((comp->stype == NULL) && (comp->has_stype != 0)) {
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xmlChar *stype =
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xsltEvalAttrValueTemplate(ctxt, sorts[j],
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(const xmlChar *) "data-type",
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XSLT_NAMESPACE);
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number[j] = 0;
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if (stype != NULL) {
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if (xmlStrEqual(stype, (const xmlChar *) "text"))
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;
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else if (xmlStrEqual(stype, (const xmlChar *) "number"))
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number[j] = 1;
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else {
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xsltTransformError(ctxt, NULL, sorts[j],
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"xsltDoSortFunction: no support for data-type = %s\n",
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stype);
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}
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xmlFree(stype);
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}
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} else {
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number[j] = comp->number;
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}
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if ((comp->order == NULL) && (comp->has_order != 0)) {
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xmlChar *order = xsltEvalAttrValueTemplate(ctxt, sorts[j],
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BAD_CAST "order",
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XSLT_NAMESPACE);
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desc[j] = 0;
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if (order != NULL) {
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if (xmlStrEqual(order, (const xmlChar *) "ascending"))
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;
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else if (xmlStrEqual(order, (const xmlChar *) "descending"))
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desc[j] = 1;
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else {
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xsltTransformError(ctxt, NULL, sorts[j],
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"xsltDoSortFunction: invalid value %s for order\n",
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order);
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}
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xmlFree(order);
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}
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} else {
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desc[j] = comp->descending;
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}
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}
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len = list->nodeNr;
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resultsTab[0] = xsltComputeSortResult(ctxt, sorts[0]);
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for (i = 1;i < XSLT_MAX_SORT;i++)
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resultsTab[i] = NULL;
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results = resultsTab[0];
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comp = sorts[0]->_private;
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if (results == NULL)
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return;
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/* Start ICU change */
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status = U_ZERO_ERROR;
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conv = ucnv_open("UTF8", &status);
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if(U_FAILURE(status)) {
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xsltTransformError(ctxt, NULL, NULL, "xsltICUSortFunction: Error opening converter\n");
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}
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if(comp->has_lang)
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coll = ucol_open((const char *) comp->lang, &status);
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if(U_FAILURE(status) || !comp->has_lang) {
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coll = ucol_open((const char *) lang, &status);
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if (U_FAILURE(status)) {
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status = U_ZERO_ERROR;
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coll = ucol_open("en", &status);
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if (U_FAILURE(status)) {
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return NULL;
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}
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}
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if(U_FAILURE(status)) {
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xsltTransformError(ctxt, NULL, NULL, "xsltICUSortFunction: Error opening collator\n");
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}
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if(comp->lower_first)
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ucol_setAttribute(coll,UCOL_CASE_FIRST,UCOL_LOWER_FIRST,&status);
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if (lowerFirst)
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ucol_setAttribute(coll, UCOL_CASE_FIRST, UCOL_LOWER_FIRST, &status);
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else
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ucol_setAttribute(coll,UCOL_CASE_FIRST,UCOL_UPPER_FIRST,&status);
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if(U_FAILURE(status)) {
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xsltTransformError(ctxt, NULL, NULL, "xsltICUSortFunction: Error setting collator attribute\n");
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}
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/* End ICU change */
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ucol_setAttribute(coll, UCOL_CASE_FIRST, UCOL_UPPER_FIRST, &status);
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/* Shell's sort of node-set */
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for (incr = len / 2; incr > 0; incr /= 2) {
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for (i = incr; i < len; i++) {
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j = i - incr;
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if (results[i] == NULL)
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continue;
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while (j >= 0) {
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if (results[j] == NULL)
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tst = 1;
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else {
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if (number[0]) {
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if (results[j]->floatval == results[j + incr]->floatval)
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tst = 0;
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else if (results[j]->floatval >
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results[j + incr]->floatval)
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tst = 1;
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else tst = -1;
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} else {
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/* tst = xmlStrcmp(results[j]->stringval,
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results[j + incr]->stringval); */
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/* Start ICU change */
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targetlen = xmlStrlen(results[j]->stringval) * 2;
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target2len = xmlStrlen(results[j + incr]->stringval) * 2;
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target = xmlMalloc(targetlen * sizeof(UChar));
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target2 = xmlMalloc(target2len * sizeof(UChar));
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targetlen = ucnv_toUChars(conv, target, targetlen,
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(const char *) results[j]->stringval,
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-1, &status);
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target2len = ucnv_toUChars(conv, target2, target2len,
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(const char *) results[j+incr]->stringval,
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-1, &status);
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tst = ucol_strcoll(coll, target, u_strlen(target), target2, u_strlen(target2));
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/* End ICU change */
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}
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if (desc[0])
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tst = -tst;
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}
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if (tst == 0) {
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/*
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* Okay we need to use multi level sorts
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*/
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depth = 1;
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while (depth < nbsorts) {
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if (sorts[depth] == NULL)
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break;
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comp = sorts[depth]->_private;
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if (comp == NULL)
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break;
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/*
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* Compute the result of the next level for the
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* full set, this might be optimized ... or not
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*/
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if (resultsTab[depth] == NULL)
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resultsTab[depth] = xsltComputeSortResult(ctxt,
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sorts[depth]);
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res = resultsTab[depth];
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if (res == NULL)
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break;
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if (res[j] == NULL)
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tst = 1;
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else {
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if (number[depth]) {
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if (res[j]->floatval == res[j + incr]->floatval)
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tst = 0;
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else if (res[j]->floatval >
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res[j + incr]->floatval)
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tst = 1;
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else tst = -1;
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} else {
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/* tst = xmlStrcmp(res[j]->stringval,
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res[j + incr]->stringval); */
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/* Start ICU change */
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targetlen = xmlStrlen(res[j]->stringval) * 2;
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target2len = xmlStrlen(res[j + incr]->stringval) * 2;
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target = xmlMalloc(targetlen * sizeof(UChar));
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target2 = xmlMalloc(target2len * sizeof(UChar));
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targetlen = ucnv_toUChars(conv, target, targetlen,
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(const char *) res[j]->stringval,
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-1, &status);
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target2len = ucnv_toUChars(conv, target2, target2len,
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(const char *) res[j+incr]->stringval,
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-1, &status);
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tst = ucol_strcoll(coll, target, u_strlen(target), target2, u_strlen(target2));
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/* End ICU change */
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}
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if (desc[depth])
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tst = -tst;
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}
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/*
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* if we still can't differenciate at this level
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* try one level deeper.
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*/
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if (tst != 0)
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break;
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depth++;
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}
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}
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if (tst == 0) {
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tst = results[j]->index > results[j + incr]->index;
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}
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if (tst > 0) {
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tmp = results[j];
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results[j] = results[j + incr];
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results[j + incr] = tmp;
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node = list->nodeTab[j];
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list->nodeTab[j] = list->nodeTab[j + incr];
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list->nodeTab[j + incr] = node;
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depth = 1;
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while (depth < nbsorts) {
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if (sorts[depth] == NULL)
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break;
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if (resultsTab[depth] == NULL)
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break;
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res = resultsTab[depth];
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tmp = res[j];
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res[j] = res[j + incr];
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res[j + incr] = tmp;
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depth++;
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}
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j -= incr;
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} else
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break;
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}
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}
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}
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/* Start ICU change */
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ucol_close(coll);
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ucnv_close(conv);
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/* End ICU change */
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for (j = 0; j < nbsorts; j++) {
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comp = sorts[j]->_private;
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if (resultsTab[j] != NULL) {
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for (i = 0;i < len;i++)
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xmlXPathFreeObject(resultsTab[j][i]);
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xmlFree(resultsTab[j]);
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}
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}
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return (void *) coll;
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}
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/**
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* xsltICUNewLocale:
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* @locale: ICU collator
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*
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* Free the ICU collator.
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*/
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void
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xsltICUFreeLocale(void *coll) {
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ucol_close((UCollator *) coll);
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}
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/**
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* xsltICUGenSortKey:
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* @locale: ICU collator
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* @str: source string
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*
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* Generate a localized sort key.
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*/
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xmlChar *
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xsltICUGenSortKey(void *coll, const xmlChar *str) {
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UConverter *conv;
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UChar *ustr = NULL;
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xmlChar *result = NULL;
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UErrorCode status = U_ZERO_ERROR;
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int32_t ustrLen, resultLen;
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conv = ucnv_open("UTF8", &status);
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if (U_FAILURE(status))
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goto error;
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ustrLen = ucnv_toUChars(conv, NULL, 0, (const char *) str, -1, &status);
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if (U_FAILURE(status) && status != U_BUFFER_OVERFLOW_ERROR)
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goto error;
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status = U_ZERO_ERROR;
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ustr = (UChar *) xmlMalloc((ustrLen + 1) * sizeof(UChar));
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if (ustr == NULL)
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goto error;
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ustrLen = ucnv_toUChars(conv, ustr, ustrLen, (const char *) str, -1,
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&status);
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if (U_FAILURE(status))
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goto error;
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resultLen = ucol_getSortKey((UCollator *) coll, ustr, ustrLen, NULL, 0);
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if (resultLen == 0)
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goto error;
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result = (xmlChar *) xmlMalloc(resultLen);
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if (result == NULL)
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goto error;
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resultLen = ucol_getSortKey((UCollator *) coll, ustr, ustrLen, result,
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resultLen);
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if (resultLen == 0) {
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xmlFree(result);
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result = NULL;
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goto error;
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}
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error:
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xmlFree(ustr);
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return result;
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}
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int main(void) {
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xmlDocPtr sourceDoc = xmlReadDoc(
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BAD_CAST
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"<d>\n"
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" <e>Berta</e>\n"
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" <e>Ärger</e>\n"
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"</d>\n",
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NULL, NULL, 0
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);
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xmlDocPtr styleDoc = xmlReadDoc(
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BAD_CAST
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"<xsl:stylesheet"
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" version='1.0'"
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" xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>\n"
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" <xsl:template match='d'>\n"
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" <xsl:for-each select='*'>\n"
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" <xsl:sort lang='de'/>\n"
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" <xsl:copy-of select='.'/>\n"
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" </xsl:for-each>\n"
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" </xsl:template>\n"
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"</xsl:stylesheet>\n",
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NULL, NULL, 0
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);
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xsltStylesheetPtr style = xsltParseStylesheetDoc(styleDoc);
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if (style == NULL)
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xmlFreeDoc(styleDoc);
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xsltTransformContextPtr tctxt = xsltNewTransformContext(style, sourceDoc);
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xsltSetCtxtLocaleHandlers(tctxt, xsltICUNewLocale, xsltICUFreeLocale,
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xsltICUGenSortKey);
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xmlDocPtr resultDoc = xsltApplyStylesheetUser(style, sourceDoc, NULL, NULL,
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NULL, tctxt);
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xsltFreeTransformContext(tctxt);
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xsltSaveResultToFile(stdout, resultDoc, style);
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xmlFreeDoc(resultDoc);
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xsltFreeStylesheet(style);
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xmlFreeDoc(sourceDoc);
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return 0;
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}
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