public Bibliography Parse(string bibtexstring)
{
// TODO - Add Comment handling TODO - Add abbreviation handlings TODO - Add proper
Bibliography bib = new Bibliography();
// exception handling
string tempparser = bibtexstring.Replace("\r", "").Replace("\n", "");
int index = 0;
while (tempparser.Length > index + 1)
{
switch (tempparser[index])
{
case '@':
// Entity Detected
int openindex = tempparser.IndexOf('{', index);
string entityname = tempparser.Substring(index + 1, openindex - index - 1);
if (entityname.Equals(string.Empty)) throw new BibTexParseException("Entry malformed, No entity name specified");
switch (entityname.ToLower())
{
case "string":
// TODO - handle variables and process once entity is found.
break;
case "preamble":
// Ignore preamble as is not relevant for MS WORD
break;
default:
Entry entry = new Entry();
entry.EntryType = entityname;
string entitycontents = GetContentBetweenOpenCloseBraces(tempparser.Substring(openindex), '{', '}');
ProcessEntry(entityname, entry, entitycontents);
bib.Entries.Add(entry);
int closeindex = openindex + entitycontents.Length;
index = closeindex;
break;
}
break;
default:
index++;
break;
}
}
return bib;
}
/// <summary>
/// This is the process
/// </summary>
/// <param name="openindex">
/// </param>
/// <param name="entityname">
/// </param>
/// <param name="entry">
/// </param>
/// <param name="entitycontents">
/// </param>
private void ProcessEntry(string entityname, Entry entry, string entitycontents)
{
if (entitycontents.Equals(string.Empty)) throw new BibTexParseException(string.Format("Entry malformed, no contents for entry found for entry {0}", entityname));
bool internalKeySet = false;
// Process all tags and validate based on entity type
int index = 0;
int previousentityindex = 0;
int braces = 0;
while (index < entitycontents.Length)
{
//Check if we have a valid entity, ends in ',' or end of the string
if (entitycontents[index].Equals(',') && braces == 0)
{
// Handle entity
string entity = entitycontents.Substring(previousentityindex, index - previousentityindex);
entity = entity.Trim(); // Clear wrapped whitespace
if (entity.Contains("="))
{
//Key Value Pair
var kv = entity.Split(new char[] { '=' }, 2);
string key = kv[0].Trim();
string value = kv[1].Trim();
if (!value.Trim().Equals(string.Empty))
{
//Dont add the key if it has no data
if (value.Contains("{"))
{
value = GetContentBetweenOpenCloseBraces(value, '{', '}').Trim();
}
entry.Tags.Add(key, value);
}
}
else
{
//Internal Key
if (!internalKeySet && !entity.Equals(string.Empty))
{
entry.InternalKey = entity;
internalKeySet = true;
}
}
previousentityindex = index + 1;
}
if (entitycontents[index].Equals('{')) braces++;
if (entitycontents[index].Equals('}')) braces--;
index++;
}
}
