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Config.cpp
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Config.cpp
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#include <cmath>
#include <fstream>
#include <map>
#include <set>
#include <string>
#include "Config.h"
#pragma warning(push)
#pragma warning(disable:4996)
typedef std::map<SimpleString,SimpleString> VariableSet;
typedef std::set<SimpleString> StringSet;
using namespace std;
static SimpleString preprocess(fstream& InputFile) {
SimpleString tmp;
string line;
while (getline(InputFile,line, '\n')) {
line = line.substr(0,line.find("//"));
for (string::iterator i = line.begin(); i != line.end(); ++i) {
switch (*i) {
case ' ':case '\t': case '\n': case '\r':
break;
default:
tmp.append(*i);
}
}
}
return tmp;
}
static bool preload(fstream& InputFile, VariableSet &variables, StringSet §ions) {
static SimpleString buf;
SimpleString tmp;
int recursion=0;
tmp = preprocess(InputFile);
SimpleString::iterator i=tmp.begin();
SimpleString tmpname;
SimpleString tmpvalue;
SimpleString currentSection;
findname:
if (i == tmp.end()) {
goto end;
}
switch (*i) {
case '{':
if (sections.insert(tmpname).second == false) {
sections.clear();
variables.clear();
return false;
}
currentSection = tmpname;
tmpname.resize(0);
goto insection;
break;
default:
tmpname.append(&*i,1);
}
++i;
goto findname;
insection:
if (i == tmp.end()) {
sections.clear();
variables.clear();
return false;
}
switch (*i) {
case '{':
++recursion;
break;
case '}':
--recursion;
if (recursion == 0) {
++i;
currentSection.resize(0);
goto findname;
}
break;
default:
goto variablename;
}
++i;
goto insection;
variablename:
if (i == tmp.end()) {
sections.clear();
variables.clear();
return false;
}
switch (*i) {
case '{':
goto insection;
case '}':
sections.clear();
variables.clear();
return false;
case '=':
if (tmpname.empty()) {
sections.clear();
variables.clear();
return false;
}
++i;
goto variablevalue;
default:
tmpname.append(&*i,1);
break;
}
++i;
goto variablename;
variablevalue:
if (i == tmp.end()) {
sections.clear();
variables.clear();
return false;
}
switch (*i) {
case '{':
sections.clear();
variables.clear();
return false;
case '}':
sections.clear();
variables.clear();
return false;
case ';':
if (tmpvalue.empty()) {
sections.clear();
variables.clear();
return false;
}
buf.assign(currentSection);
buf.append('/');
buf.append(tmpname);
variables.insert(VariableSet::value_type(buf, tmpvalue));
tmpname.resize(0);
tmpvalue.resize(0);
++i;
goto insection;
default:
tmpvalue.append(i,1);
break;
}
++i;
goto variablevalue;
end:
return true;
}
Config::Config(const SimpleString &sFileName) :
m_pVariables(NULL),
m_pSections(NULL),
m_sFileName(sFileName),
m_bLoaded(false)
{
}
Config::~Config()
{
if (m_pVariables != NULL)
delete static_cast<VariableSet *>(m_pVariables);
if (m_pSections != NULL)
delete static_cast<StringSet *>(m_pSections);
}
int Config::SetSection(const SimpleString &sName)
{
if (!m_bLoaded) {
m_bLoaded = true;
m_pVariables = new VariableSet();
m_pSections = new StringSet();
fstream InputFile;
bool result;
InputFile.open(m_sFileName.c_str(), ios::in);
if (InputFile.is_open() == 0) {
result = false;
} else {
result = preload(InputFile,
*(static_cast<VariableSet *>(m_pVariables)),
*(static_cast<StringSet *>(m_pSections)));
InputFile.close();
}
if (!result) {
delete static_cast<VariableSet *>(m_pVariables);
m_pVariables = NULL;
delete static_cast<StringSet *>(m_pSections);
m_pSections = NULL;
return -1;
}
}
if (m_pVariables == NULL) {
return -1;
}
StringSet::const_iterator i =
((StringSet*)m_pSections)->find(sName);
if (i != ((StringSet*)m_pSections)->end() ) {
m_sCurrentSection.assign(sName).append('/');
return 0;
} else {
m_sCurrentSection.resize(0);
return -1;
}
}
int Config::GetByNameAsInteger(const SimpleString &sName, int lDefaut) const
{
static SimpleString longName;
longName.assign(m_sCurrentSection).append(sName);
VariableSet::const_iterator i =
((VariableSet *)m_pVariables)->find(longName);
if (i != ((VariableSet *)m_pVariables)->end())
return atoi((*i).second.c_str());
else {
return lDefaut;
}
}
const SimpleString &Config::GetByNameAsString(const SimpleString &sName, const SimpleString &sDefaut) const
{
static SimpleString longName;
longName.assign(m_sCurrentSection).append(sName);
VariableSet::const_iterator i =
((VariableSet *)m_pVariables)->find(longName);
if (i != ((VariableSet *)m_pVariables)->end())
return (*i).second;
else {
return sDefaut;
}
}
double Config::GetByNameAsFloat(const SimpleString &sName, double fDefaut) const
{
static SimpleString longName;
longName.assign(m_sCurrentSection).append(sName);
VariableSet::const_iterator i =
static_cast<VariableSet *>(m_pVariables)->find(longName);
if (i != ((VariableSet *)m_pVariables)->end())
return atof((*i).second.c_str());
else {
return fDefaut;
}
}
bool Config::GetByNameAsBoolean(const SimpleString &sName, bool bDefaut) const
{
static SimpleString longName;
longName.assign(m_sCurrentSection).append(sName);
VariableSet::const_iterator i =
static_cast<VariableSet *>(m_pVariables)->find(longName);
if (i != ((VariableSet *)m_pVariables)->end()) {
return (*i).second.compare("true")==0;
} else {
return bDefaut;
}
}
vector3d Config::GetByNameAsVector(const SimpleString &sName, const vector3d& vDefault) const
{
vector3d tempvector3d;
static SimpleString longName;
longName.assign(m_sCurrentSection).append(sName);
VariableSet::const_iterator i =
static_cast<VariableSet *>(m_pVariables)->find(longName);
if (i != ((VariableSet *)m_pVariables)->end()) {
int nbRead = sscanf(i->second.c_str(), "%f,%f,%f", &tempvector3d.x, &tempvector3d.y, &tempvector3d.z);
if (nbRead != 3) {
return vDefault;
}
return tempvector3d;
} else {
return vDefault;
}
}
point Config::GetByNameAsPoint(const SimpleString &sName, const point& ptDefault) const
{
point tempPoint;
static SimpleString longName;
longName.assign(m_sCurrentSection).append(sName);
VariableSet::const_iterator i =
static_cast<VariableSet *>(m_pVariables)->find(longName);
if (i != ((VariableSet *)m_pVariables)->end()) {
int nbRead = sscanf(i->second.c_str(), "%f,%f,%f", &tempPoint.x, &tempPoint.y, &tempPoint.z);
if (nbRead != 3) {
return ptDefault;
}
return tempPoint;
} else {
return ptDefault;
}
}
#pragma warning(pop)