??? 這兩天在個朋友Yao寫一個很簡單而繁瑣的程序－－學生排座程序。說簡單，是需求很簡單，就是隨機排座；說繁瑣是在很多細節和GUI實現上累的我半死。想想，我還是喜歡寫console程序。。。
??? 程序中的文件存儲操作采用的是xml格式，以前我都使用TinyXML，一個很小，很好用的XML庫。由于這次程序使用的是wxWidgets，因此XML部分也就使用wxWidgets提供的wxXmlDocument/wxXmlNode/wxXmlProperty了。這幾個對象的名字在TinyXML中都有相對應的對象，上手也快，但細節上有些不同，尤其是wxXmlNodeType這個類型的使用上。
enum?wxXmlNodeType
{
????//?note:?values?are?synchronized?with?xmlElementType?from?libxml
????wxXML_ELEMENT_NODE???????=??1,
????wxXML_ATTRIBUTE_NODE?????=??2,
????wxXML_TEXT_NODE??????????=??3,
????wxXML_CDATA_SECTION_NODE?=??4,
????wxXML_ENTITY_REF_NODE????=??5,
????wxXML_ENTITY_NODE????????=??6,
????wxXML_PI_NODE????????????=??7,
????wxXML_COMMENT_NODE???????=??8,
????wxXML_DOCUMENT_NODE??????=??9,
????wxXML_DOCUMENT_TYPE_NODE?=?10,
????wxXML_DOCUMENT_FRAG_NODE?=?11,
????wxXML_NOTATION_NODE??????=?12,
????wxXML_HTML_DOCUMENT_NODE?=?13
};??? 下面是使用wxWidgets中XML對象的open/save操作代碼，記錄下。
??1int?CManageObject::Open(const?wxString?&file)
??2{
??3????wxXmlDocument?doc;
??4????if(!doc.Load(file))
??5????????return?-1;
??6????
??7????wxXmlNode*?root?=?doc.GetRoot();
??8????if(root?==?NULL)
??9????????return?-1;
?10????wxString?str?=?root->GetName();
?11????if(str?!=?wxT("RunSite"))
?12????????return?-1;
?13
?14????New();
?15
?16????wxXmlNode*?si?=?root->GetChildren();
?17????if(si?==?NULL)
?18????????return?-1;
?19????str?=?si->GetName();
?20????if(str?!=?wxT("SiteInfo"))
?21????????return?-1;
?22????wxXmlNode*?col?=?si->GetChildren();
?23????if(col?==?NULL)
?24????????return?-1;
?25????str?=?col->GetName();
?26????if(str?!=?wxT("Col"))
?27????????return?-1;
?28????str?=?col->GetNodeContent();
?29????if(!str.ToLong(&m_data.col))
?30????????return?-1;
?31????wxXmlNode*?row?=?col->GetNext();
?32????if(row?==?NULL)
?33????????return?-1;
?34????str?=?row->GetName();
?35????if(str?!=?wxT("Row"))
?36????????return?-1;
?37????str?=?row->GetNodeContent();
?38????if(!str.ToLong(&m_data.row))
?39????????return?-1;
?40
?41????wxXmlNode*?special?=?row->GetNext();
?42????if(special?!=?NULL)
?43
????{
?44????????m_data.sitespecial?=?true;
?45????????if(special->GetName()?!=?wxT("Special"))
?46????????????return?-1;
?47????????wxXmlNode*?s?=?special->GetChildren();
?48????????if(s?==?NULL?||?s->GetName()?!=?wxT("ColRange"))
?49????????????return?-1;
?50????????wxXmlProperty*?p?=?s->GetProperties();
?51????????if(p?==?NULL?||?p->GetName()?!=?wxT("begin"))
?52????????????return?-1;
?53????????if(!p->GetValue().ToLong(&m_data.bcol))
?54????????????return?-1;
?55????????p?=?p->GetNext();
?56????????if(p?==?NULL?||?p->GetName()?!=?wxT("end"))
?57????????????return?-1;
?58????????if(!p->GetValue().ToLong(&m_data.ecol))
?59????????????return?-1;
?60
?61????????s?=?s->GetNext();
?62????????if(s?==?NULL?||?s->GetName()?!=?wxT("RowRange"))
?63????????????return?-1;
?64????????p?=?s->GetProperties();
?65????????if(p?==?NULL?||?p->GetName()?!=?wxT("begin"))
?66????????????return?-1;
?67????????if(!p->GetValue().ToLong(&m_data.brow))
?68????????????return?-1;
?69????????p?=?p->GetNext();
?70????????if(p?==?NULL?||?p->GetName()?!=?wxT("end"))
?71????????????return?-1;
?72????????if(!p->GetValue().ToLong(&m_data.erow))
?73????????????return?-1;
?74
????}
?75????else
?76????{
?77????????m_data.sitespecial?=?false;
?78????}
?79
?80????wxXmlNode*?bi?=?si->GetNext();
?81????if(bi?==?NULL?||?bi->GetName()?!=?wxT("BoxInfo"))
?82????????return?-1;
?83????wxXmlNode*?b?=?bi->GetChildren();
?84????while(b?!=?NULL)
?85????{
?86????????if(b->GetName()?!=?wxT("Box"))
?87????????????return?-1;
?88????????Data::box_t?box;
?89????????wxXmlProperty*?p?=?b->GetProperties();
?90????????if(p?==?NULL?||?p->GetName()?!=?wxT("id"))
?91????????????return?-1;
?92????????box.id?=?p->GetValue();
?93
?94????????p?=?p->GetNext();
?95????????if(p?==?NULL?||?p->GetName()?!=?wxT("name"))
?96????????????return?-1;
?97????????box.name?=?p->GetValue();
?98
?99????????p?=?p->GetNext();
100????????if(p?!=?NULL)
101????????{
102????????????if(p->GetName()?!=?wxT("special"))
103????????????????return?-1;
104????????????if(p->GetValue()?==?wxT("T"))
105????????????????box.special?=?true;
106????????????else
107????????????????box.special?=?false;
108????????}
109????????else
110????????{
111????????????box.special?=?false;
112????????}
113
114????????m_data.vct.push_back(box);
115
116????????b?=?b->GetNext();
117????}
118
119????return?0;
120}
121
122int?CManageObject::Save(const?wxString?&file)
123{
124????wxXmlNode*?cx?=?NULL;
125????wxXmlNode*?root?=?new?wxXmlNode(NULL,?wxXML_ELEMENT_NODE,?wxT("RunSite"));????
126
127//SiteInfo
128????wxXmlNode*?si?=?new?wxXmlNode(NULL,?wxXML_ELEMENT_NODE,?wxT("SiteInfo"),?wxEmptyString);
129
130????wxXmlNode*?col?=?new?wxXmlNode(wxXML_ELEMENT_NODE,?wxT("Col"));
131????cx?=?new?wxXmlNode(wxXML_TEXT_NODE,?wxEmptyString,?wxString::Format(wxT("%d"),?m_data.col));
132????col->AddChild(cx);
133????si->AddChild(col);
134????wxXmlNode*?row?=?new?wxXmlNode(wxXML_ELEMENT_NODE,?wxT("Row"));
135????cx?=?new?wxXmlNode(wxXML_TEXT_NODE,?wxEmptyString,?wxString::Format(wxT("%d"),?m_data.row));
136????row->AddChild(cx);
137????si->AddChild(row);
138
139????wxXmlNode*?sp?=?NULL;
140
141????if(m_data.sitespecial)
142????{
143????????wxXmlNode*?sp?=?new?wxXmlNode(NULL,?wxXML_ELEMENT_NODE,?wxT("Special"));
144
145????????wxXmlProperty*?e?=?new?wxXmlProperty(wxT("end"),?wxString::Format(wxT("%d"),?m_data.ecol));
146????????wxXmlProperty*?b?=?new?wxXmlProperty(wxT("begin"),?wxString::Format(wxT("%d"),?m_data.bcol),?e);
147????????wxXmlNode*?c?=?new?wxXmlNode(NULL,?wxXML_ELEMENT_NODE,?wxT("ColRange"),?wxEmptyString,?b);
148//????????c->AddProperty(b);
149????????
150????????sp->AddChild(c);
151
152????????
153????????e?=?new?wxXmlProperty(wxT("end"),?wxString::Format(wxT("%d"),?m_data.erow));
154????????b?=?new?wxXmlProperty(wxT("begin"),?wxString::Format(wxT("%d"),?m_data.brow),?e);
155????????wxXmlNode*?r?=?new?wxXmlNode(NULL,?wxXML_ELEMENT_NODE,?wxT("RowRange"),?wxEmptyString,?b);
156//????????r->AddProperty(b);
157????????sp->AddChild(r);
158
159????????si->AddChild(sp);
160????}
161
162????root->AddChild(si);
163
164//Box?Info
165????wxXmlNode*?bi?=?new?wxXmlNode(NULL,?wxXML_ELEMENT_NODE,?wxT("BoxInfo"));
166????for(Data::TBoxVector::const_iterator?it?=?m_data.vct.begin();?it?!=?m_data.vct.end();?++?it)
167????{
168????????wxXmlProperty*?s?=?NULL;
169????????if(it->special)
170????????????s?=?new?wxXmlProperty(wxT("special"),?wxT("T"));
171
172????????wxXmlProperty*?n?=?new?wxXmlProperty(wxT("name"),?it->name,?s);
173????????wxXmlProperty*?i?=?new?wxXmlProperty(wxT("id"),?it->id,?n);
174????????wxXmlNode*?b?=?new?wxXmlNode(NULL,?wxXML_ELEMENT_NODE,?wxT("Box"),?wxEmptyString,?i);
175//????????b->AddProperty(i);
176
177????????bi->AddChild(b);
178????}
179
180????root->AddChild(bi);
181
182????wxXmlDocument?doc;
183????doc.SetRoot(root);
184????if(!doc.Save(file))
185????????return?-1;
186
187????return?0;
188} ??? 邊學邊寫，凌亂的狠，還好，想來朋友Yao不會關心代碼是怎么寫的，只是自己看著不舒服了～對應的XML文件如下：
<?xml?version="1.0"?encoding="utf-8"?>
<RunSite>
??<SiteInfo>
????<Col>3</Col>
????<Row>4</Row>
????<Special>
??????<ColRange?begin="2"?end="3"/>
??????<RowRange?begin="3"?end="4"/>
????</Special>
??</SiteInfo>
??<BoxInfo>
????<Box?id="1"?name="11"/>
????<Box?id="2"?name="22"?special="T"/>
??</BoxInfo>
</RunSite>