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Commitc59f94e

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Revert "Delete contrib/xml2's legacy implementation of xml_is_well_formed()."
This partly reverts commit2054071.Since we've given up on adding PGDLLEXPORT markers to PG_FUNCTION_INFO_V1,there's no need to remove the legacy compatibility function. I kept thedocumentation changes, though, as they seem appropriate anyway.
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‎contrib/xml2/xpath.c

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@@ -81,6 +81,51 @@ pgxml_parser_init(PgXmlStrictness strictness)
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}
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/*
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* Returns true if document is well-formed
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*
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* Note: this has been superseded by a core function. We still have to
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* have it in the contrib module so that existing SQL-level references
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* to the function won't fail; but in normal usage with up-to-date SQL
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* definitions for the contrib module, this won't be called.
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*/
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PG_FUNCTION_INFO_V1(xml_is_well_formed);
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Datum
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xml_is_well_formed(PG_FUNCTION_ARGS)
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{
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text*t=PG_GETARG_TEXT_P(0);/* document buffer */
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boolresult= false;
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int32docsize=VARSIZE(t)-VARHDRSZ;
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xmlDocPtrdoctree;
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PgXmlErrorContext*xmlerrcxt;
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xmlerrcxt=pgxml_parser_init(PG_XML_STRICTNESS_LEGACY);
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PG_TRY();
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{
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doctree=xmlParseMemory((char*)VARDATA(t),docsize);
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result= (doctree!=NULL);
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if (doctree!=NULL)
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xmlFreeDoc(doctree);
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}
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PG_CATCH();
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{
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pg_xml_done(xmlerrcxt, true);
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PG_RE_THROW();
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}
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PG_END_TRY();
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pg_xml_done(xmlerrcxt, false);
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PG_RETURN_BOOL(result);
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}
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/* Encodes special characters (<, >, &, " and \r) as XML entities */
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PG_FUNCTION_INFO_V1(xml_encode_special_chars);

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