%% Copyright (C) 2011 by Marco Daniel 
%% 
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%% The latest version of this license is in
%% 
%%    http://www.latex-project.org/lppl.txt
%% 
%% and version 1.3c or later is part of all distributions of LaTeX
%% version 2008/05/04 or later.
%% 
%% This work has the LPPL maintenance status `maintained'.
%% 
%% The Current Maintainer of this work is Marco Daniel.
%% 
%% This work consists of the files nejm.bbx, nejm.cbx, biblatex-nejm.tex
%% and biblatex-nejm.pdf

%%$Id: nejm.bbx 28 2011-09-09 17:17:01Z marco $
%%$Rev: 28 $
%%$Author: marco $
%%$Date: 2011-09-09 19:17:01 +0200 (Fr, 09. Sep 2011) $
\def\biblatexnejmversionbbx{v0.4}
\def\biblatexnejmpackagenamebbx{nejm.bbx}
\def\biblatexnejmsvnbbx$#1: #2 #3 #4-#5-#6 #7 #8${#4/#5/#6\space }
\ProvidesFile{nejm.bbx}[\biblatexnejmsvnbbx$Id: nejm.bbx 28 2011-09-09 17:17:01Z marco $ \biblatexnejmversionbbx: \biblatexnejmpackagenamebbx]

%use numeric.cbx as base
%Warning if backend isn't biber
\RequireBiber[2]
%need style:
\RequireBibliographyStyle{standard}

%set options to biblatex
\ExecuteBibliographyOptions
  {
    isbn         = false ,
    labelnumber  = true ,
    minnames     = 3 , 
    maxnames     = 6 ,
    firstinits   = true ,
    terseinits   = true ,
    sorting      = none ,
 %   language     = nejm ,
  }


%provide original option
\providebool{bbx:subentry}
\DeclareBibliographyOption{subentry}[true]{%
  \setbool{bbx:subentry}{#1}}

\providetoggle{bbx:articledoi}
\DeclareBibliographyOption{articledoi}[false]{%
  \settoggle{bbx:articledoi}{#1}}

\providetoggle{bbx:articlein}
\DeclareBibliographyOption{articlein}[false]{%
  \settoggle{bbx:articlein}{#1}}

\providetoggle{bbx:printlang}
\DeclareBibliographyOption{printlang}[false]{%
  \settoggle{bbx:printlang}{#1}}


%specify language
\DeclareListFormat{language}{%
   \iftoggle{bbx:printlang}{%
          \usebibmacro{list:delim}{%
               \ifbibstring{#1}%
                 {\bibxstring{#1}}%
                 {\ifbibstring{lang#1}%
                    {\bibxstring{lang#1}}%
                    {#1}}}%
             \ifbibstring{#1}%
               {\bibstring{#1}}%
               {\ifbibstring{lang#1}%
                  {\bibstring{lang#1}}%
                  {#1}}%
          \usebibmacro{list:andothers}%
   }{}%
}

%format date -- only year printed
\@ifpackageloaded{babel}{%
 \edef\blx@tempa{\bbl@main@language}%
 }{%
 \edef\blx@tempa{\blx@languagename}%
}
\DefineBibliographyExtras{\blx@tempa}{%
%<year><month><day>
  \protected\def\mkbibdatelong#1#2#3{%
    \stripzeros{\thefield{#1}}%
    }%
  \protected\def\mkbibdateshort#1#2#3{%
    \mkdatezeros{\thefield{#1}}%
   }%  
}

%Set environment
\defbibenvironment{bibliography}
  {\list
     {\printtext[labelnumberwidth]{%
	\printfield{prefixnumber}%
	\printfield{labelnumber}}}
     {\setlength{\labelwidth}{\labelnumberwidth}%
      \setlength{\leftmargin}{\labelwidth}%
      \setlength{\labelsep}{\biblabelsep}%
      \addtolength{\leftmargin}{\labelsep}%
      \setlength{\itemsep}{\bibitemsep}%
      \setlength{\parsep}{\bibparsep}}%
      \renewcommand*{\makelabel}[1]{\hss##1}}
  {\endlist}
  {\item}

\defbibenvironment{shorthands}
  {\list
     {\printfield[shorthandwidth]{shorthand}}
     {\setlength{\labelwidth}{\shorthandwidth}%
      \setlength{\leftmargin}{\labelwidth}%
      \setlength{\labelsep}{\biblabelsep}%
      \addtolength{\leftmargin}{\labelsep}%
      \setlength{\itemsep}{\bibitemsep}%
      \setlength{\parsep}{\bibparsep}%
      \renewcommand*{\makelabel}[1]{\hss##1}}}
  {\endlist}
  {\item}

%%
\DeclareBibliographyDriver{set}{%
  \entryset
    {\ifbool{bbx:subentry}
       {\printfield[bibentrysetcount]{entrysetcount}%
	\setunit*{\addnbspace}}
       {}}
    {}%
  \newunit\newblock
  \usebibmacro{setpageref}%
  \finentry}

%remove punctuation and space after initials -- require biber
\renewrobustcmd*{\bibinitperiod}{}
%separator printed before the pages field
\renewcommand*{\bibpagespunct}{\addcolon}
%no bracktes in thebibliography and add dot
\DeclareFieldFormat{labelnumberwidth}{#1\adddot}
%not formating pages
\DeclareFieldFormat*{pages}{#1}
%not formated journaltitle
\DeclareFieldFormat*{journaltitle}{#1}
%not formated title
\DeclareFieldFormat*{title}{#1}


%Set name format
\DeclareNameAlias{default}{last-first}
\DeclareNameAlias{sortname}{last-first}
%Not needed??
\DeclareNameAlias{author}{last-first}
\DeclareNameAlias{editor}{last-first}
\DeclareNameAlias{translator}{last-first}

%remove comma between familyname and firstname
\renewbibmacro*{name:last-first}[4]{%
  \ifuseprefix
    {\usebibmacro{name:delim}{#3#1}%
     \usebibmacro{name:hook}{#3#1}%
     \ifblank{#3}{}{%
       \ifcapital
         {\mkbibnameprefix{\MakeCapital{#3}}\isdot}
     {\mkbibnameprefix{#3}\isdot}%
       \ifpunctmark{'}{}{\bibnamedelimc}}%
     \mkbibnamelast{#1}\isdot
     \ifblank{#4}{}{\bibnamedelimd\mkbibnameaffix{#4}\isdot}%
     \ifblank{#2}{}{\bibnamedelimd\mkbibnamefirst{#2}\isdot}}%remove \addcomma
    {\usebibmacro{name:delim}{#1}%
     \usebibmacro{name:hook}{#1}%
     \mkbibnamelast{#1}\isdot
     \ifblank{#4}{}{\bibnamedelimd\mkbibnameaffix{#4}\isdot}%
%     \ifblank{#2#3}{}{\addcomma}%%commented
     \ifblank{#2}{}{\bibnamedelimd\mkbibnamefirst{#2}\isdot}%
     \ifblank{#3}{}{\bibnamedelimd\mkbibnameprefix{#3}\isdot}}}

%option articledoi -- no doi / eprint / url in article
\newbibmacro*{doi+eprint+url-use}{%
       \iftoggle{bbx:doi}%
         {\printfield{doi}}%
         {}%
       \newunit\newblock
       \iftoggle{bbx:eprint}%
         {\usebibmacro{eprint}}%
         {}%
       \newunit\newblock
       \iftoggle{bbx:url}%
         {\usebibmacro{url+urldate}}%
         {}%
}

\renewbibmacro*{doi+eprint+url}{%
  \ifentrytype{article}%
    {%
     \iftoggle{bbx:articledoi}%
      {\usebibmacro{doi+eprint+url-use}}{}%
    }{\usebibmacro{doi+eprint+url-use}
    }%
}

%no bibstring in in article:
\renewbibmacro*{in:}{%
\ifentrytype{article}%
    {\iftoggle{bbx:articlein}{\printtext{\bibstring{in}\intitlepunct}}{}}%
    {\printtext{\bibstring{in}\intitlepunct}}%
}

%no number in ouput of bibliography
\renewbibmacro*{volume+number+eid}{%
  \printfield{volume}%
%  \setunit*{\adddot}%
%  \printfield{number}%
  \setunit{\addcomma\space}%
  \printfield{eid}}

%Order year;volume:page
\renewbibmacro*{issue+date}{%
  \printtext{%
    \iffieldundef{issue}
      {\usebibmacro{date}}
      {\printfield{issue}%
       \setunit*{\addspace}%
       \usebibmacro{date}}}%
  \newunit}

\renewbibmacro*{journal+issuetitle}{%
  \usebibmacro{journal}%
  \setunit*{\addspace}%
  \usebibmacro{issue+date}%
  \setunit*{\addsemicolon}
  \iffieldundef{series}
    {}
    {\newunit
     \printfield{series}%
     \setunit{\addspace}}%
  \usebibmacro{volume+number+eid}%
  \setunit{\addspace}%
  \setunit{\addcomma\space}%
  \usebibmacro{issue}%
  \newunit}

\endinput