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/**
* xsltICUSort.c: module to provide a sort function replacement using ICU,
* it is not included in standard due to the size of the ICU
* library
*
* Requires libxslt 1.1.38
*/
#include <libxslt/transform.h>
#include <libxslt/xsltutils.h>
#include <unicode/ucnv.h>
#include <unicode/ucol.h>
/**
* xsltICUNewLocale:
* @lang: lang
*
* Create a new ICU collator.
*/
void *
xsltICUNewLocale(const xmlChar *lang, int lowerFirst) {
UCollator *coll;
UErrorCode status = U_ZERO_ERROR;
coll = ucol_open((const char *) lang, &status);
if (U_FAILURE(status)) {
status = U_ZERO_ERROR;
coll = ucol_open("en", &status);
if (U_FAILURE(status)) {
return NULL;
}
}
if (lowerFirst)
ucol_setAttribute(coll, UCOL_CASE_FIRST, UCOL_LOWER_FIRST, &status);
else
ucol_setAttribute(coll, UCOL_CASE_FIRST, UCOL_UPPER_FIRST, &status);
return (void *) coll;
}
/**
* xsltICUNewLocale:
* @locale: ICU collator
*
* Free the ICU collator.
*/
void
xsltICUFreeLocale(void *coll) {
ucol_close((UCollator *) coll);
}
/**
* xsltICUGenSortKey:
* @locale: ICU collator
* @str: source string
*
* Generate a localized sort key.
*/
xmlChar *
xsltICUGenSortKey(void *coll, const xmlChar *str) {
UConverter *conv;
UChar *ustr = NULL;
xmlChar *result = NULL;
UErrorCode status = U_ZERO_ERROR;
int32_t ustrLen, resultLen;
conv = ucnv_open("UTF8", &status);
if (U_FAILURE(status))
goto error;
ustrLen = ucnv_toUChars(conv, NULL, 0, (const char *) str, -1, &status);
if (U_FAILURE(status) && status != U_BUFFER_OVERFLOW_ERROR)
goto error;
status = U_ZERO_ERROR;
ustr = (UChar *) xmlMalloc((ustrLen + 1) * sizeof(UChar));
if (ustr == NULL)
goto error;
ustrLen = ucnv_toUChars(conv, ustr, ustrLen, (const char *) str, -1,
&status);
if (U_FAILURE(status))
goto error;
resultLen = ucol_getSortKey((UCollator *) coll, ustr, ustrLen, NULL, 0);
if (resultLen == 0)
goto error;
result = (xmlChar *) xmlMalloc(resultLen);
if (result == NULL)
goto error;
resultLen = ucol_getSortKey((UCollator *) coll, ustr, ustrLen, result,
resultLen);
if (resultLen == 0) {
xmlFree(result);
result = NULL;
goto error;
}
error:
xmlFree(ustr);
return result;
}
int main(void) {
xmlDocPtr sourceDoc = xmlReadDoc(
BAD_CAST
"<d>\n"
" <e>Berta</e>\n"
" <e>Ärger</e>\n"
"</d>\n",
NULL, NULL, 0
);
xmlDocPtr styleDoc = xmlReadDoc(
BAD_CAST
"<xsl:stylesheet"
" version='1.0'"
" xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>\n"
" <xsl:template match='d'>\n"
" <xsl:for-each select='*'>\n"
" <xsl:sort lang='de'/>\n"
" <xsl:copy-of select='.'/>\n"
" </xsl:for-each>\n"
" </xsl:template>\n"
"</xsl:stylesheet>\n",
NULL, NULL, 0
);
xsltStylesheetPtr style = xsltParseStylesheetDoc(styleDoc);
if (style == NULL)
xmlFreeDoc(styleDoc);
xsltTransformContextPtr tctxt = xsltNewTransformContext(style, sourceDoc);
xsltSetCtxtLocaleHandlers(tctxt, xsltICUNewLocale, xsltICUFreeLocale,
xsltICUGenSortKey);
xmlDocPtr resultDoc = xsltApplyStylesheetUser(style, sourceDoc, NULL, NULL,
NULL, tctxt);
xsltFreeTransformContext(tctxt);
xsltSaveResultToFile(stdout, resultDoc, style);
xmlFreeDoc(resultDoc);
xsltFreeStylesheet(style);
xmlFreeDoc(sourceDoc);
return 0;
}
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