public Dictionary<string, MapItem> ReadFromFile(string fileName)
{
Func<string, bool> isComment = m => !string.IsNullOrEmpty(CommentKey) && m.StartsWith(CommentKey);
var result = new Dictionary<string, MapItem>();
using (StreamReader sr = new StreamReader(fileName))
{
string line;
while ((line = sr.ReadLine()) != null)
{
if (!isComment(line))
{
break;
}
}
if (keyIndex == -1)
{
var parts = line.Split(this.delimiter);
keyIndex = Array.IndexOf(parts, key);
if (keyIndex == -1)
{
throw new ArgumentException(string.Format("Cannot find key column {0} in file {1}", key, fileName));
}
valueIndex = Array.IndexOf(parts, value);
if (valueIndex == -1)
{
throw new ArgumentException(string.Format("Cannot find value column {0} in file {1}", value, fileName));
}
if (!string.IsNullOrEmpty(information))
{
informationIndex = Array.IndexOf(parts, information);
if (informationIndex == -1)
{
throw new ArgumentException(string.Format("Cannot find information column {0} in file {1}", informationIndex, fileName));
}
}
line = sr.ReadLine();
}
else if (hasHeader)
{
line = sr.ReadLine();
}
while (line != null)
{
if (!string.IsNullOrWhiteSpace(line) && !isComment(line))
{
if (CheckEnd(line))
{
break;
}
var curParts = line.Split(this.delimiter);
var item = new MapItem();
item.Key = curParts[keyIndex];
item.Value = curParts[valueIndex];
if (informationIndex != -1)
{
item.Information = curParts[informationIndex];
}
result[item.Key] = item;
}
line = sr.ReadLine();
}
}
return result;
}