// Load
// Attempts to load in the text file. If successful it will populate the
// Section list with the key/value pairs found in the file. Note that comments
// are saved so that they can be rewritten to the file later.
bool CDataFile::Load(t_Str szFileName)
{
// We dont want to create a new file here. If it doesn't exist, just
// return false and report the failure.
std::fstream File(szFileName.c_str(), std::ios_base::in);
// |std::ios_base::nocreate
if ( File.is_open() )
{
bool bDone = false;
bool bAutoKey = (m_Flags & AUTOCREATE_KEYS) == AUTOCREATE_KEYS;
bool bAutoSec = (m_Flags & AUTOCREATE_SECTIONS) == AUTOCREATE_SECTIONS;
t_Str szLine;
t_Str szComment;
char buffer[MAX_BUFFER_LEN];
t_Section* pSection = GetSection("");
// These need to be set, we'll restore the original values later.
m_Flags |= AUTOCREATE_KEYS;
m_Flags |= AUTOCREATE_SECTIONS;
while ( !bDone )
{
memset(buffer, 0, MAX_BUFFER_LEN);
File.getline(buffer, MAX_BUFFER_LEN);
szLine = buffer;
Trim(szLine);
bDone = ( File.eof() || File.bad() || File.fail() );
if ( szLine.find_first_of(CommentIndicators) == 0 )
{
szComment += "\n";
szComment += szLine;
}
else
if ( szLine.find_first_of('[') == 0 ) // new section
{
szLine.erase( 0, 1 );
szLine.erase( szLine.find_last_of(']'), 1 );
CreateSection(szLine, szComment);
pSection = GetSection(szLine);
szComment = t_Str("");
}
else
if ( szLine.size() > 0 ) // we have a key, add this key/value pair
{
t_Str szKey = GetNextWord(szLine);
t_Str szValue = szLine;
if ( szKey.size() > 0 && szValue.size() > 0 )
{
SetValue(szKey, szValue, szComment, pSection->szName);
szComment = t_Str("");
}
}
}
// Restore the original flag values.
if ( !bAutoKey )
m_Flags &= ~AUTOCREATE_KEYS;
if ( !bAutoSec )
m_Flags &= ~AUTOCREATE_SECTIONS;
}
else
{
Report(E_INFO, "[CDataFile::Load] Unable to open file. Does it exist?");
return false;
}
File.close();
return true;
}
// GetValue
// Returns the key value as a t_Str object. A return value of
// t_Str("") indicates that the key could not be found.
t_Str CDataFile::GetValue(t_Str szKey, t_Str szSection)
{
t_Key* pKey = GetKey(szKey, szSection);
return (pKey == NULL) ? t_Str("") : pKey->szValue;
}
// Clear
// Resets the member variables to their defaults
void CDataFile::Clear()
{
m_bDirty = false;
m_szFileName = t_Str("");
m_Sections.clear();
}
