/**
* Will parse the BibTex-Data found when reading from reader.
*
* The reader will be consumed.
*
* Multiple calls to parse() return the same results
*
* @return ParserResult
* @throws IOException
*/
public ParserResult Parse()
{
// If we already parsed this, just return it.
if (_pr != null)
return _pr;
_db = new BibtexDatabase(); // Bibtex related contents.
_meta = new Dictionary<string, string>(); // Metadata in comments for Bibkeeper.
entryTypes = new Dictionary<string, BibtexEntryType>(); // To store custem entry types parsed.
_pr = new ParserResult(_db, _meta, entryTypes);
// First see if we can find the version number of the JabRef version that
// wrote the file:
string versionNum = ReadJabRefVersionNumber();
if (versionNum != null) {
_pr.JabrefVersion = versionNum;
SetMajorMinorVersions();
}
else {
// No version number found. However, we have only
}
SkipWhitespace();
try {
while (!_eof) {
bool found = ConsumeUncritically('@');
if (!found)
break;
SkipWhitespace();
string entryType = ParseTextToken();
BibtexEntryType tp = BibtexEntryType.getType(entryType);
bool isEntry = (tp != null);
// Util.pr(tp.getName());
if (!isEntry) {
// The entry type name was not recognized. This can mean
// that it is a string, preamble, or comment. If so,
// parse and set accordingly. If not, assume it is an entry
// with an unknown type.
if (entryType.ToLower().Equals("preamble")) {
_db.setPreamble(ParsePreamble());
} else if (entryType.ToLower().Equals("string")) {
BibtexString bs = ParseString();
try {
_db.addString(bs);
} catch (KeyCollisionException) {
_pr.AddWarning(Globals.lang("Duplicate string name") + ": "
+ bs.getName());
// ex.printStackTrace();
}
} else if (entryType.ToLower().Equals("comment")) {
StringBuilder commentBuf = ParseBracketedTextExactly();
/**
*
* Metadata are used to store Bibkeeper-specific
* information in .bib files.
*
* Metadata are stored in bibtex files in the format
*
* @comment{jabref-meta: type:data0;data1;data2;...}
*
* Each comment that starts with the META_FLAG is stored
* in the meta Dictionary, with type as key. Unluckily, the
* old META_FLAG bibkeeper-meta: was used in JabRef 1.0
* and 1.1, so we need to support it as well. At least
* for a while. We'll always save with the new one.
*/
// TODO: unicode escape sequences
string comment = commentBuf.ToString().Replace("[\\x0d\\x0a]", "");
if (comment.Substring(0,
Math.Min(comment.Length, Globals.META_FLAG.Length)).Equals(
Globals.META_FLAG)
|| comment.Substring(0,
Math.Min(comment.Length, Globals.META_FLAG_OLD.Length))
.Equals(Globals.META_FLAG_OLD)) {
string rest;
if (comment.Substring(0, Globals.META_FLAG.Length).Equals(
Globals.META_FLAG))
rest = comment.Substring(Globals.META_FLAG.Length);
else
rest = comment.Substring(Globals.META_FLAG_OLD.Length);
int pos = rest.IndexOf(':');
if (pos > 0)
_meta.Add(rest.Substring(0, pos), rest.Substring(pos + 1));
// We remove all line breaks in the metadata - these
// will have been inserted
// to prevent too long lines when the file was
// saved, and are not part of the data.
}
/**
* A custom entry type can also be stored in a
*
* @comment:
*/
if (comment.Substring(0,
Math.Min(comment.Length, Globals.ENTRYTYPE_FLAG.Length)).Equals(
Globals.ENTRYTYPE_FLAG)) {
CustomEntryType typ = CustomEntryType.parseEntryType(comment);
entryTypes.Add(typ.getName().ToLower(), typ);
}
} else {
// The entry type was not recognized. This may mean that
// it is a custom entry type whose definition will
// appear
// at the bottom of the file. So we use an
// UnknownEntryType
// to remember the type name by.
tp = new UnknownEntryType(entryType.ToLower());
// System.out.println("unknown type: "+entryType);
isEntry = true;
}
}
if (isEntry) // True if not comment, preamble or string.
{
/**
* Morten Alver 13 Aug 2006: Trying to make the parser more
* robust. If an exception is thrown when parsing an entry,
* drop the entry and try to resume parsing. Add a warning
* for the user.
*
* An alternative solution is to try rescuing the entry for
* which parsing failed, by returning the entry with the
* exception and adding it before parsing is continued.
*/
try {
BibtexEntry be = ParseEntry(tp);
bool duplicateKey = _db.insertEntry(be);
if (duplicateKey) // JZTODO lyrics
_pr.AddDuplicateKey(be.getCiteKey());
/*_pr.AddWarning(Globals.lang("duplicate BibTeX key") + ": "
+ be.getCiteKey() + " ("
+ Globals.lang("grouping may not work for this entry") + ")"); */
else if (be.getCiteKey() == null || be.getCiteKey().Equals("")) {
_pr.AddWarning(Globals.lang("empty BibTeX key") + ": "
+ be.getAuthorTitleYear(40) + " ("
+ Globals.lang("grouping may not work for this entry") + ")");
}
} catch (IOException ex) {
_pr.AddWarning(Globals.lang("Error occured when parsing entry") + ": '"
+ ex.Message + "'. " + Globals.lang("Skipped entry."));
}
}
SkipWhitespace();
}
// Before returning the database, update entries with unknown type
// based on parsed type definitions, if possible.
CheckEntryTypes(_pr);
return _pr;
} catch (KeyCollisionException kce) {
// kce.printStackTrace();
throw new IOException("Duplicate ID in bibtex file: " + kce.ToString());
}
}
public void CheckEntryTypes(ParserResult _pr)
{
foreach (BibtexEntry be in _db.getEntries()){
if (be.getType() is UnknownEntryType) {
// Look up the unknown type name in our map of parsed types:
object o = entryTypes[(be.getType().getName().ToLower())];
if (o != null) {
BibtexEntryType type = (BibtexEntryType) o;
be.setType(type);
} else {
// System.out.println("Unknown entry type:
// "+be.getType().getName());
_pr
.AddWarning(Globals.lang("unknown entry type") + ": "
+ be.getType().getName() + ". " + Globals.lang("Type set to 'other'")
+ ".");
be.setType(BibtexEntryType.OTHER.Instance);
}
}
}
}
