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<h1>DDXParser.h</h1><a href="DDXParser_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00002"></a>00002 <span class="comment">// -*- mode: c++; c-basic-offset:4 -*-</span>
<a name="l00003"></a>00003
<a name="l00004"></a>00004 <span class="comment">// This file is part of libdap, A C++ implementation of the OPeNDAP Data</span>
<a name="l00005"></a>00005 <span class="comment">// Access Protocol.</span>
<a name="l00006"></a>00006
<a name="l00007"></a>00007 <span class="comment">// Copyright (c) 2003 OPeNDAP, Inc.</span>
<a name="l00008"></a>00008 <span class="comment">// Author: James Gallagher <jgallagher@opendap.org></span>
<a name="l00009"></a>00009 <span class="comment">//</span>
<a name="l00010"></a>00010 <span class="comment">// This library is free software; you can redistribute it and/or</span>
<a name="l00011"></a>00011 <span class="comment">// modify it under the terms of the GNU Lesser General Public</span>
<a name="l00012"></a>00012 <span class="comment">// License as published by the Free Software Foundation; either</span>
<a name="l00013"></a>00013 <span class="comment">// version 2.1 of the License, or (at your option) any later version.</span>
<a name="l00014"></a>00014 <span class="comment">//</span>
<a name="l00015"></a>00015 <span class="comment">// This library is distributed in the hope that it will be useful,</span>
<a name="l00016"></a>00016 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00017"></a>00017 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00018"></a>00018 <span class="comment">// Lesser General Public License for more details.</span>
<a name="l00019"></a>00019 <span class="comment">//</span>
<a name="l00020"></a>00020 <span class="comment">// You should have received a copy of the GNU Lesser General Public</span>
<a name="l00021"></a>00021 <span class="comment">// License along with this library; if not, write to the Free Software</span>
<a name="l00022"></a>00022 <span class="comment">// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
<a name="l00023"></a>00023 <span class="comment">//</span>
<a name="l00024"></a>00024 <span class="comment">// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="preprocessor">#ifndef ddx_parser_h</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span><span class="preprocessor">#define ddx_parser_h</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <string></span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <map></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <stack></span>
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="preprocessor">#include <libxml/parserInternals.h></span>
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="preprocessor">#ifndef ddx_exceptions_h</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="DDXExceptions_8h.html">DDXExceptions.h</a>"</span>
<a name="l00037"></a>00037 <span class="preprocessor">#endif</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span>
<a name="l00039"></a>00039 <span class="preprocessor">#ifndef _dds_h</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="DDS_8h.html">DDS.h</a>"</span>
<a name="l00041"></a>00041 <span class="preprocessor">#endif</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span>
<a name="l00043"></a>00043 <span class="preprocessor">#ifndef _basetype_h</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="BaseType_8h.html">BaseType.h</a>"</span>
<a name="l00045"></a>00045 <span class="preprocessor">#endif</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span>
<a name="l00047"></a>00047 <span class="preprocessor">#ifndef base_type_factory_h</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="BaseTypeFactory_8h.html">BaseTypeFactory.h</a>"</span>
<a name="l00049"></a>00049 <span class="preprocessor">#endif</span>
<a name="l00050"></a>00050 <span class="preprocessor"></span>
<a name="l00051"></a>00051 <span class="keyword">namespace </span>libdap
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053
<a name="l00079"></a><a class="code" href="classlibdap_1_1DDXParser.html">00079</a> <span class="keyword">class </span><a class="code" href="classlibdap_1_1DDXParser.html">DDXParser</a>
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 <span class="keyword">private</span>:
<a name="l00084"></a>00084 <span class="keyword">enum</span> ParseState {
<a name="l00085"></a>00085 parser_start,
<a name="l00086"></a>00086
<a name="l00087"></a>00087 inside_dataset,
<a name="l00088"></a>00088
<a name="l00089"></a>00089 inside_attribute_container,
<a name="l00090"></a>00090 inside_attribute,
<a name="l00091"></a>00091 inside_attribute_value,
<a name="l00092"></a>00092
<a name="l00093"></a>00093 inside_alias,
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="comment">// This covers Byte, ..., Url.</span>
<a name="l00096"></a>00096 inside_simple_type,
<a name="l00097"></a>00097
<a name="l00098"></a>00098 inside_array,
<a name="l00099"></a>00099 inside_dimension,
<a name="l00100"></a>00100
<a name="l00101"></a>00101 inside_grid,
<a name="l00102"></a>00102 inside_map,
<a name="l00103"></a>00103
<a name="l00104"></a>00104 inside_structure,
<a name="l00105"></a>00105 inside_sequence,
<a name="l00106"></a>00106
<a name="l00107"></a>00107 inside_blob_href,
<a name="l00108"></a>00108
<a name="l00109"></a>00109 parser_unknown,
<a name="l00110"></a>00110 parser_error
<a name="l00111"></a>00111 };
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <a class="code" href="classlibdap_1_1BaseTypeFactory.html">BaseTypeFactory</a> *d_factory;
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="comment">// These stacks hold the state of the parse as it progresses.</span>
<a name="l00116"></a>00116 stack<ParseState> s; <span class="comment">// Current parse state</span>
<a name="l00117"></a>00117 stack<BaseType*> bt_stack; <span class="comment">// current variable(s)</span>
<a name="l00118"></a>00118 stack<AttrTable*> at_stack; <span class="comment">// current attribute table</span>
<a name="l00119"></a>00119
<a name="l00120"></a>00120 <span class="comment">// These are used for processing errors.</span>
<a name="l00121"></a>00121 <span class="keywordtype">string</span> error_msg; <span class="comment">// Error message(s), if any.</span>
<a name="l00122"></a>00122 xmlParserCtxtPtr ctxt; <span class="comment">// used for error msg line numbers</span>
<a name="l00123"></a>00123
<a name="l00124"></a>00124 <span class="comment">// The results of the parse operation are stored in these fields.</span>
<a name="l00125"></a>00125 <a class="code" href="classlibdap_1_1DDS.html">DDS</a> *dds; <span class="comment">// dump DDX here</span>
<a name="l00126"></a>00126 <span class="keywordtype">string</span> *blob_href; <span class="comment">// put href to blob here</span>
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="comment">// These hold temporary values read during the parse.</span>
<a name="l00129"></a>00129 <span class="keywordtype">string</span> dods_attr_name; <span class="comment">// DAP2 attributes, not XML attributes</span>
<a name="l00130"></a>00130 <span class="keywordtype">string</span> dods_attr_type; <span class="comment">// ... not XML ...</span>
<a name="l00131"></a>00131 <span class="keywordtype">string</span> char_data; <span class="comment">// char data in value elements; null after use</span>
<a name="l00132"></a>00132 map<string, string> attributes; <span class="comment">// dump XML attributes here</span>
<a name="l00133"></a>00133
<a name="l00134"></a>00134 <span class="comment">// These are kind of silly...</span>
<a name="l00135"></a>00135 <span class="keywordtype">void</span> set_state(DDXParser::ParseState state);
<a name="l00136"></a>00136 DDXParser::ParseState get_state() <span class="keyword">const</span>;
<a name="l00137"></a>00137 <span class="keywordtype">void</span> pop_state();
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <span class="comment">// Glue for the BaseTypeFactory class.</span>
<a name="l00140"></a>00140 <a class="code" href="classlibdap_1_1BaseType.html" title="The basic data type for the DODS DAP types.">BaseType</a> *factory(<a class="code" href="namespacelibdap.html#05ca706d4539ae7b750c3bc7066ab6e6" title="Identifies the data type.">Type</a> t, <span class="keyword">const</span> <span class="keywordtype">string</span> &name);
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="comment">// Common cleanup code for intern() and intern_stream()</span>
<a name="l00143"></a>00143 <span class="keywordtype">void</span> cleanup_parse(xmlParserCtxtPtr &context) <span class="keyword">const</span>;
<a name="l00144"></a>00144
<a name="l00151"></a>00151 <span class="keywordtype">void</span> transfer_attrs(<span class="keyword">const</span> <span class="keywordtype">char</span> **attrs);
<a name="l00152"></a>00152 <span class="keywordtype">bool</span> check_required_attribute(<span class="keyword">const</span> <span class="keywordtype">string</span> &attr);
<a name="l00153"></a>00153 <span class="keywordtype">bool</span> check_attribute(<span class="keyword">const</span> <span class="keywordtype">string</span> & attr);
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="keywordtype">void</span> process_attribute_element(<span class="keyword">const</span> <span class="keywordtype">char</span> **attrs);
<a name="l00156"></a>00156 <span class="keywordtype">void</span> process_attribute_alias(<span class="keyword">const</span> <span class="keywordtype">char</span> **attrs);
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="keywordtype">void</span> process_variable(<a class="code" href="namespacelibdap.html#05ca706d4539ae7b750c3bc7066ab6e6" title="Identifies the data type.">Type</a> t, ParseState s, <span class="keyword">const</span> <span class="keywordtype">char</span> **attrs);
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="keywordtype">void</span> process_dimension(<span class="keyword">const</span> <span class="keywordtype">char</span> **attrs);
<a name="l00161"></a>00161 <span class="keywordtype">void</span> process_blob(<span class="keyword">const</span> <span class="keywordtype">char</span> **attrs);
<a name="l00162"></a>00162
<a name="l00163"></a>00163 <span class="keywordtype">bool</span> is_attribute_or_alias(<span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> <span class="keywordtype">char</span> **attrs);
<a name="l00164"></a>00164 <span class="keywordtype">bool</span> is_variable(<span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> <span class="keywordtype">char</span> **attrs);
<a name="l00165"></a>00165
<a name="l00166"></a>00166 <span class="keywordtype">void</span> finish_variable(<span class="keyword">const</span> <span class="keywordtype">char</span> *tag, <a class="code" href="namespacelibdap.html#05ca706d4539ae7b750c3bc7066ab6e6" title="Identifies the data type.">Type</a> t, <span class="keyword">const</span> <span class="keywordtype">char</span> *expected);
<a name="l00168"></a>00168
<a name="l00170"></a>00170 <a class="code" href="classlibdap_1_1DDXParser.html">DDXParser</a>()
<a name="l00171"></a>00171 {}
<a name="l00172"></a>00172
<a name="l00173"></a>00173 <span class="keyword">public</span>:
<a name="l00174"></a><a class="code" href="classlibdap_1_1DDXParser.html#bfbc95ad430e73daf1b31049feb71dd5">00174</a> <a class="code" href="classlibdap_1_1DDXParser.html">DDXParser</a>(<a class="code" href="classlibdap_1_1BaseTypeFactory.html">BaseTypeFactory</a> *factory) : d_factory(factory)
<a name="l00175"></a>00175 {}
<a name="l00176"></a>00176
<a name="l00177"></a>00177 <span class="keywordtype">void</span> <a class="code" href="classlibdap_1_1DDXParser.html#53f69a6fdbf4321fd9c3a2b3df73c145">intern</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &document, <a class="code" href="classlibdap_1_1DDS.html">DDS</a> *dest_dds);
<a name="l00178"></a>00178 <span class="keywordtype">void</span> <a class="code" href="classlibdap_1_1DDXParser.html#18db544f577097e17fae0515a6eb9cf2" title="Read the DDX from a stream instead of a file.">intern_stream</a>(FILE *in, <a class="code" href="classlibdap_1_1DDS.html">DDS</a> *dds);
<a name="l00179"></a>00179
<a name="l00180"></a>00180 <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classlibdap_1_1DDXParser.html#359f2fa2c5afcc6af99810b499c10359">ddx_start_document</a>(<a class="code" href="classlibdap_1_1DDXParser.html">DDXParser</a> *parser);
<a name="l00181"></a>00181 <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classlibdap_1_1DDXParser.html#f4d0d88734c1c47ff3f81d88420b6395">ddx_end_document</a>(<a class="code" href="classlibdap_1_1DDXParser.html">DDXParser</a> *parser);
<a name="l00182"></a>00182 <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classlibdap_1_1DDXParser.html#855b5c5d3776191d952edf06bc1d85a1">ddx_start_element</a>(<a class="code" href="classlibdap_1_1DDXParser.html">DDXParser</a> *parser, <span class="keyword">const</span> <span class="keywordtype">char</span> *name,
<a name="l00183"></a>00183 <span class="keyword">const</span> <span class="keywordtype">char</span> **attrs);
<a name="l00184"></a>00184 <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classlibdap_1_1DDXParser.html#eb094c9ba8bdf2ab61445b1e22627c76">ddx_end_element</a>(<a class="code" href="classlibdap_1_1DDXParser.html">DDXParser</a> *parser, <span class="keyword">const</span> <span class="keywordtype">char</span> *name);
<a name="l00185"></a>00185 <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classlibdap_1_1DDXParser.html#2457c4c72e6bddc1012eb1140ee00213">characters</a>(<a class="code" href="classlibdap_1_1DDXParser.html">DDXParser</a> *parser, <span class="keyword">const</span> xmlChar *ch, <span class="keywordtype">int</span> len);
<a name="l00186"></a>00186 <span class="keyword">static</span> xmlEntityPtr <a class="code" href="classlibdap_1_1DDXParser.html#2e203e095de0fa86bb9e6ee6a5133345">ddx_get_entity</a>(<a class="code" href="classlibdap_1_1DDXParser.html">DDXParser</a> *parser,
<a name="l00187"></a>00187 <span class="keyword">const</span> xmlChar *name);
<a name="l00188"></a>00188 <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classlibdap_1_1DDXParser.html#1bb54991cfa9273eeff010cd43486d52">ddx_fatal_error</a>(<a class="code" href="classlibdap_1_1DDXParser.html">DDXParser</a> *parser, <span class="keyword">const</span> <span class="keywordtype">char</span> *msg, ...);
<a name="l00189"></a>00189 };
<a name="l00190"></a>00190
<a name="l00191"></a>00191 } <span class="comment">// namespace libdap</span>
<a name="l00192"></a>00192
<a name="l00193"></a>00193 <span class="preprocessor">#endif // ddx_parser_h</span>
</pre></div></div>
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