const char *Section::getDataNameAt(int index) const
{
KeyValue *kv = d_kv_vector[index];
if(kv)
{
return kv->getName();
}
return "";
}
void Writer::visitKeyValue(const KeyValue& dataline) const
{
if(dataline.isDeleted() && ( !d_commentchar || !d_preservedeleted))
{
// Don't preserve deleted data when comments are null
// or we don't want to preserve them
return;
}
else
{
string key = dataline.getName();
string value = dataline.getValue();
string comment = dataline.getComment();
string commentchar(1,d_commentchar);
if(dataline.isDeleted())
{
// print the comment character
//
*d_outputstream << d_commentchar << " ";
}
if(key != "")
{
int position = 0;
size_t location;
// escape all backslashes
//
while( (location = key.find("\\", position)) != string::npos )
{
// location points right at the '\'
key.insert(location, "\\");
position = (int) location + 2;
}
// escape comment characters
// unless the comment character is a backslash, which we've already escaped....
//
if(d_commentchar && d_commentchar != '\\')
{
position = 0;
while( (location = key.find(commentchar, position)) != string::npos )
{
// location points right at the '"'
key.insert(location, "\\");
position = (int) location + 2;
}
}
// escape all delimiters, unless the delimiter is a backslash or the same as the comment, god forbid.
//
//
if(d_delimiter != '\\' && d_delimiter != d_commentchar)
{
if(d_delimiter)
{
string delimiter(1, d_delimiter);
position = 0;
while( (location = key.find(delimiter, position)) != string::npos )
{
// location points right at the '"'
key.insert(location, "\\");
position = (int) location + 2;
}
}
else
{
position = 0;
while( (location = key.find("\t", position)) != string::npos )
{
// location points right at the '"'
key.insert(location, "\\");
position = (int) location + 2;
}
position = 0;
while( (location = key.find(" ", position)) != string::npos )
{
// location points right at the '"'
key.insert(location, "\\");
position = (int) location + 2;
}
}
}
// print the key
//
*d_outputstream << key;
}
if(value != "")
{
// print out the delimiter
//
*d_outputstream << " " << ( d_delimiter ? d_delimiter : '\t' ) << " ";
int position = 0;
size_t location;
// escape all backslashes
//
string backslash(1,'\\');
while( (location = value.find("\\", position)) != string::npos )
{
// location points right at the '\'
value.insert(location, "\\");
position = (int) location + 2;
}
// escape all quotes
//
string quote(1,'"');
position = 0;
while( (location = value.find("\"", position)) != string::npos )
{
// location points right at the '"'
value.insert(location, "\\");
position = (int) location + 2;
}
// escape comment characters
// unless the comment character is a backslash or a quote, which we've already escaped....
//
if(d_commentchar && d_commentchar != '\\' && d_commentchar != '"')
{
position = 0;
while( (location = value.find(commentchar, position)) != string::npos )
{
// location points right at the '"'
value.insert(location, "\\");
position = (int) location + 2;
}
}
// if value starts with whitespace, ends with whitespace or contains the comment character or CRLF's, quote the value,
//
int size = value.size();
if( isspace(value[0]) ||
isspace(value[size-1]) ||
(value.find("\r", 0) != string::npos) ||
(value.find("\f", 0) != string::npos) ||
(value.find("\n", 0)!= string::npos)
)
{
value.insert(0, "\"");
value += "\"";
}
// if data is deleted and there are CRLFS
// then each line must start with a comment character.
// The safest way is just to follow every newline character with a comment
//
if( dataline.isDeleted() && (
(value.find("\r", 0) != string::npos) ||
(value.find("\f", 0) != string::npos) ||
(value.find("\n", 0)!= string::npos) )
)
{
position = 0;
while( (location = value.find("\r", position)) != string::npos )
{
// location points right at the '"'
value.insert(location + 1, commentchar);
position = (int) location + 2;
}
position = 0;
while( (location = value.find("\f", position)) != string::npos )
{
// location points right at the '"'
value.insert(location + 1, commentchar);
position = (int) location + 2;
}
position = 0;
while( (location = value.find("\n", position)) != string::npos )
{
// location points right at the '"'
value.insert(location + 1, commentchar);
position = (int) location + 2;
}
}
*d_outputstream << value;
}
if( comment != "" && d_commentchar && d_preservecomments)
{
// add value's comment at end if it exists
// and there is a comment character
//
*d_outputstream << "\t " << d_commentchar << comment;
}
// end the entry with a newline
//
*d_outputstream << "\n";
}
}