mirror of
https://gitlab.gnome.org/GNOME/libxslt
synced 2025-04-19 05:42:15 +03:00
eaa68b7738
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.
147 lines
3.7 KiB
C
147 lines
3.7 KiB
C
/**
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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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* Requires libxslt 1.1.38
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*/
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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/ucol.h>
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/**
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* xsltICUNewLocale:
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* @lang: lang
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*
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* Create a new ICU collator.
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*/
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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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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 (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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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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