Re: Call for comments: File BibTex

Hi Jesus, > Am Freitag, 7. April 2006 18:43 schrieb Jesus M. Castagnetto: > Hi Elmar, > > --- Elmar Pitschke <elmar.pitschke@gmx.de> wrote: > > Am Donnerstag, 6. April 2006 22:07 schrieb Arnaud Limbourg: > > > Elmar Pitschke wrote: > > > > Hello, > > > > > > > > this is my first proposal to Pear so please be patient if i'm doing > > > > some stupid mistakes. I have proposed the outcome of a project i did > > > > at my university to work with BibTex data. The class works but i > > > > don't know if there is anything more needed for proposal. > > > > > > > > If you have a minute to spare please take a look at this proposal: > > > > > > > > http://pear.php.net/pepr/pepr-proposal-show.php?id=386 > > > > > > > > Thanks for your time > > > > Regards > > > > Elmar Pitschke > > > > > > Hi, > > > > > > It would be great if you could put .phps files online. > > > > > > Does the class generate the bibtex.tex file as well, it looks like the > > > most useful feature to me ? > > > > > > Arnaud. > > > > Hi, > > thanks for the comment. I put a .phps file online at: > > http://www.helftgreg.de/bibtex/BibTex.phps > > Also i updated the proposal. Of course there is also a method to export > > the data in BibTex Format again it is called "bibTex". > > The code for the parser is very naive. Seems like you did not test it with > a variety of BIBTEX input. For one, you cannot rely on the field data being > on just one line. That is an artificial restriction you are putting in your > code and does not exist in the original Bibtex spec. Your code fails in > many sample files known in the literature. > > Also, it seems like the code is just the start of a Bibtex parser, because > it does not do any validation of the entries being added, or parsed (see > example below). It might be nice to have some sort of encapsulation and > validation of entries, but this could be a new package (Structure_BibTex > perhaps?), so one could do: > > $art = new Structure_BibTex_Article(); > $art->setAuthor(array('Random Nerd', 'Unix Foggie')); > ... etc. > > In any case, take a look at: > > > ftp://sunsite.unc.edu/pub/packages/TeX/biblio/bibtex/distribs/doc/btxdoc.te >x (or the similar document in the tetex distribution) > http://en.wikipedia.org/wiki/BibTeX > > http://www-static.cc.gatech.edu/classes/RWL/Projects/citation/Docs/UserManu >als/Reference_Pages/bibtex_doc.html > http://www.ecst.csuchico.edu/~jacobsd/bib/formats/bibtex.html > > From the second URL we can take an example that will break your code: > > [ex.bib] > @Book{abramowitz+stegun, > author = "Milton Abramowitz and Irene A. Stegun", > title = "Handbook of Mathematical Functions with > Formulas, Graphs, and Mathematical Tables", > publisher = "Dover", > year = 1964, > address = "New York", > edition = "ninth Dover printing, tenth GPO printing", > isbn = "0-486-61272-4" > } > > when run with your code: > > $ex = new File_BibTex(); > $ex->loadFile('ex.bib'); > $ex->parse(); > print_r($ex->data); > > gives the incorrect: > > Array > ( > [0] => Array > ( > [type] => Book > [cite] => abramowitz+stegun > [author] => Array > ( > [0] => Milton Abramowitz > [1] => Irene A. Stegun > ) > > [title] => Handbook of Mathematical Functions wit > [Formulas, Graphs, and Mathematical Tables", > publisher] => Dover > [year] => 1964 > [address] => New York > [edition] => ninth Dover printing, tenth GPO printing > [isbn] => 0-486-61272-4 > ) > > ) > > > -- > Jesus M. Castagnetto (jcastagnetto@yahoo.com) > Web site: http://www.castagnetto.org/ > Research: http://metallo.scripps.edu/ > PEAR stuff: http://pear.php.net/user/jmcastagnetto > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com thanks for the remarks. The funny thing is that with the example which is in the german version of wikipedia my code won't break. Nevertheless on the weekend i had a rather good idea to get a better parser but it takes me some time to implement it. I will get back to this list as soon as it is finished. And i also added your BibTex example to my Unit Testings. I also see this as the beginning of a BibTex class. Validation would be another possibility what may be implemented later. Another possibility would be some export functions: BibTex, text or even RTF. But first i am satisfied if the parser works ;) Thanks for your help Regards Elmar