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eodev/eo/src/utils/eoState.cpp

147 lines
2.9 KiB
C++

#ifdef _MSC_VER
#pragma warning(disable:4786)
#endif
#include <algorithm>
#include <fstream>
#include <strstream>
#include "eoState.h"
#include "eoObject.h"
#include "eoPersistent.h"
using namespace std;
void removeComment(string& str, string comment)
{
string::size_type pos = str.find(comment);
if (pos != string::npos)
{
str.erase(pos, str.size());
}
}
bool is_section(const string& str, string& name)
{
string::size_type pos = str.find("\\section{");
if (pos == string::npos)
return false;
//else
string::size_type end = str.find("}");
if (end == string::npos)
return false;
// else
name = str.substr(pos + 9, end-9);
return true;
}
void eoState::registerObject(eoPersistent& registrant)
{
string name = createObjectName(dynamic_cast<eoObject*>(&registrant));
objectMap[name] = &registrant;
}
void eoState::load(const string& _filename)
{
ifstream is (_filename.c_str());
if (is.fail())
{
string str = "Could not open file " + _filename;
throw runtime_error(str);
}
string str;
string name;
getline(is, str);
while(is)
{ // parse section header
if (is_section(str, name))
{
string fullString;
ObjectMap::iterator it = objectMap.find(name);
if (it == objectMap.end())
{ // ignore
while (getline(is, str))
{
if (is_section(str, name))
break;
}
}
else
{
eoPersistent* object = it->second;
// now we have the object, get lines, remove comments etc.
string fullstring;
while (getline(is, str))
{
if (is_section(str, name))
break;
removeComment(str, getCommentString());
fullstring += str + "\n";
}
istrstream the_stream(fullstring.c_str(), fullstring.size());
object->readFrom(the_stream);
}
}
}
}
void eoState::save(const string& filename)
{
ofstream os(filename.c_str());
for (ObjectMap::iterator it = objectMap.begin(); it != objectMap.end(); ++it)
{
os << "\\section{" << it->first << "}\n";
it->second->printOn(os);
os << '\n';
}
}
string eoState::createObjectName(eoObject* obj)
{
if (obj == 0)
{
ostrstream os;
os << objectMap.size();
return os.str();
}
// else
string name = obj->className();
ObjectMap::const_iterator it = objectMap.find(name);
unsigned count = 1;
while (it != objectMap.end())
{
ostrstream os;
os << obj->className().c_str() << count++ << ends;
name = os.str();
it = objectMap.find(name);
}
return name;
}