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+// file : xsd/cxx/parser/expat/elements.hxx
+// author : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2009 Code Synthesis Tools CC
+// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#ifndef XSD_CXX_PARSER_EXPAT_ELEMENTS_HXX
+#define XSD_CXX_PARSER_EXPAT_ELEMENTS_HXX
+
+#include <string>
+#include <iosfwd>
+#include <cstddef> // std::size_t
+#include <vector>
+
+#include <expat.h>
+
+// We only support UTF-8 expat for now.
+//
+#ifdef XML_UNICODE
+#error UTF-16 expat (XML_UNICODE defined) is not supported
+#endif
+
+#include <xsd/cxx/xml/error-handler.hxx>
+
+#include <xsd/cxx/parser/exceptions.hxx>
+#include <xsd/cxx/parser/elements.hxx>
+#include <xsd/cxx/parser/document.hxx>
+#include <xsd/cxx/parser/error-handler.hxx>
+#include <xsd/cxx/parser/schema-exceptions.hxx>
+
+namespace xsd
+{
+ namespace cxx
+ {
+ namespace parser
+ {
+ namespace expat
+ {
+ // Simple auto pointer for Expat's XML_Parser object.
+ //
+ struct parser_auto_ptr
+ {
+ ~parser_auto_ptr ()
+ {
+ if (parser_ != 0)
+ XML_ParserFree (parser_);
+ }
+
+ explicit
+ parser_auto_ptr (XML_Parser parser = 0)
+ : parser_ (parser)
+ {
+ }
+
+ parser_auto_ptr&
+ operator= (XML_Parser parser)
+ {
+ if (parser_ != 0)
+ XML_ParserFree (parser_);
+
+ parser_ = parser;
+ return *this;
+ }
+
+ public:
+ operator XML_Parser ()
+ {
+ return parser_;
+ }
+
+ private:
+ parser_auto_ptr (const parser_auto_ptr&);
+
+ parser_auto_ptr&
+ operator= (const parser_auto_ptr&);
+
+ private:
+ XML_Parser parser_;
+ };
+
+
+ //
+ //
+ template <typename C>
+ struct document: cxx::parser::document<C> // VC 7.1 likes it qualified
+ {
+ public:
+ document (parser_base<C>&,
+ const C* root_element_name,
+ bool polymorphic = false);
+
+ document (parser_base<C>&,
+ const std::basic_string<C>& root_element_name,
+ bool polymorphic = false);
+
+ document (parser_base<C>&,
+ const C* root_element_namespace,
+ const C* root_element_name,
+ bool polymorphic = false);
+
+ document (parser_base<C>&,
+ const std::basic_string<C>& root_element_namespace,
+ const std::basic_string<C>& root_element_name,
+ bool polymorphic = false);
+
+ protected:
+ document (bool polymorphic = false);
+
+ public:
+ // Parse a local file. The file is accessed with std::ifstream
+ // in binary mode. The std::ios_base::failure exception is used
+ // to report io errors (badbit and failbit).
+ void
+ parse (const std::basic_string<C>& file);
+
+ // Parse a local file with a user-provided error_handler
+ // object. The file is accessed with std::ifstream in binary
+ // mode. The std::ios_base::failure exception is used to report
+ // io errors (badbit and failbit).
+ //
+ void
+ parse (const std::basic_string<C>& file, xml::error_handler<C>&);
+
+ public:
+ // System id is a "system" identifier of the resources (e.g.,
+ // URI or a full file path). Public id is a "public" identifier
+ // of the resource (e.g., application-specific name or relative
+ // file path). System id is used to resolve relative paths.
+ // In diagnostics messages system id is used if public id is
+ // not available. Otherwise public id is used.
+ //
+
+ // Parse std::istream.
+ //
+ void
+ parse (std::istream&);
+
+ // Parse std::istream with a user-provided error_handler object.
+ //
+ void
+ parse (std::istream&, xml::error_handler<C>&);
+
+ // Parse std::istream with a system id.
+ //
+ void
+ parse (std::istream&, const std::basic_string<C>& system_id);
+
+ // Parse std::istream with a system id and a user-provided
+ // error_handler object.
+ //
+ void
+ parse (std::istream&,
+ const std::basic_string<C>& system_id,
+ xml::error_handler<C>&);
+
+ // Parse std::istream with system and public ids.
+ //
+ void
+ parse (std::istream&,
+ const std::basic_string<C>& system_id,
+ const std::basic_string<C>& public_id);
+
+ // Parse std::istream with system and public ids and a user-provided
+ // error_handler object.
+ //
+ void
+ parse (std::istream&,
+ const std::basic_string<C>& system_id,
+ const std::basic_string<C>& public_id,
+ xml::error_handler<C>&);
+
+ public:
+ // Parse a chunk of input. You can call these functions multiple
+ // times with the last call having the last argument true.
+ //
+ void
+ parse (const void* data, std::size_t size, bool last);
+
+ void
+ parse (const void* data, std::size_t size, bool last,
+ xml::error_handler<C>&);
+
+ void
+ parse (const void* data, std::size_t size, bool last,
+ const std::basic_string<C>& system_id);
+
+ void
+ parse (const void* data, std::size_t size, bool last,
+ const std::basic_string<C>& system_id,
+ xml::error_handler<C>&);
+
+ void
+ parse (const void* data, std::size_t size, bool last,
+ const std::basic_string<C>& system_id,
+ const std::basic_string<C>& public_id);
+
+ void
+ parse (const void* data, std::size_t size, bool last,
+ const std::basic_string<C>& system_id,
+ const std::basic_string<C>& public_id,
+ xml::error_handler<C>&);
+
+ public:
+ // Low-level Expat-specific parsing API. A typical use case
+ // would look like this (pseudo-code):
+ //
+ // xxx_pimpl root;
+ // document doc (root, "root");
+ //
+ // root.pre ();
+ // doc.parse_begin (xml_parser, "file.xml");
+ //
+ // while (more_stuff_to_parse &&)
+ // {
+ // // Call XML_Parse or XML_ParseBuffer.
+ //
+ // if (status == XML_STATUS_ERROR)
+ // break;
+ // }
+ //
+ // // Call parse_end even in case of an error to translate
+ // // XML and Schema errors to exceptions or error_handler
+ // // calls.
+ // //
+ // doc.parse_end ();
+ // result_type result (root.post_xxx ());
+ //
+ // Notes:
+ //
+ // 1. If your XML instances use XML namespaces, the
+ // XML_ParserCreateNS functions should be used to create the
+ // XML parser. Space (XML_Char (' ')) should be used as a
+ // separator (the second argument to XML_ParserCreateNS).
+ //
+ void
+ parse_begin (XML_Parser);
+
+ void
+ parse_begin (XML_Parser, const std::basic_string<C>& public_id);
+
+ void
+ parse_begin (XML_Parser, xml::error_handler<C>&);
+
+ void
+ parse_begin (XML_Parser,
+ const std::basic_string<C>& public_id,
+ xml::error_handler<C>&);
+ void
+ parse_end ();
+
+ // Event routing.
+ //
+ public:
+ static void XMLCALL
+ start_element_thunk_ (void*, const XML_Char*, const XML_Char**);
+
+ static void XMLCALL
+ end_element_thunk_ (void*, const XML_Char*);
+
+ static void XMLCALL
+ characters_thunk_ (void*, const XML_Char*, int);
+
+ static void XMLCALL
+ start_namespace_decl_thunk_ (
+ void*, const XML_Char*, const XML_Char*);
+
+ static void XMLCALL
+ end_namespace_decl_thunk_ (void*, const XML_Char*);
+
+ protected:
+ void
+ start_element_ (const XML_Char* ns_name, const XML_Char** atts);
+
+ void
+ end_element_ (const XML_Char* ns_name);
+
+ void
+ characters_ (const XML_Char* s, std::size_t n);
+
+ void
+ start_namespace_decl_ (const XML_Char* prefix, const XML_Char* ns);
+
+ void
+ end_namespace_decl_ (const XML_Char* prefix);
+
+ protected:
+ void
+ set ();
+
+ void
+ clear ();
+
+ bool
+ parse (std::istream&,
+ const std::basic_string<C>* system_id,
+ const std::basic_string<C>* public_id,
+ xml::error_handler<C>&);
+
+ bool
+ parse (const void* data, std::size_t size, bool last,
+ const std::basic_string<C>* system_id,
+ const std::basic_string<C>* public_id,
+ xml::error_handler<C>&);
+
+
+ void
+ translate_schema_exception (const schema_exception<C>& e);
+
+ protected:
+ XML_Parser xml_parser_;
+ parser_auto_ptr auto_xml_parser_;
+
+ xml::error_handler<C>* eh_;
+ error_handler<C> default_eh_;
+ std::basic_string<C> public_id_;
+
+ bool polymorphic_;
+
+ // Namespace-prefix mapping. Only maintained in the polymorphic
+ // case.
+ //
+ struct ns_decl
+ {
+ ns_decl (const std::basic_string<C>& p,
+ const std::basic_string<C>& n)
+ : prefix (p), ns (n)
+ {
+ }
+
+ std::basic_string<C> prefix;
+ std::basic_string<C> ns;
+ };
+
+ typedef std::vector<ns_decl> ns_decls;
+
+ ns_decls ns_decls_;
+ };
+ }
+ }
+ }
+}
+
+#include <xsd/cxx/parser/expat/elements.txx>
+
+#endif // XSD_CXX_PARSER_EXPAT_ELEMENTS_HXX