styles/backref.sty

   1 %%
   2 %% This is file `backref.sty',
   3 %% generated with the docstrip utility.
   4 %%
   5 %% The original source files were:
   6 %%
   7 %% backref.dtx  (with options: `package')
   8 %%
   9 \def\fileversion{1.19}
  10 \def\filedate{2000/01/19}
  11 %% File: backref.dtx Copyright (C) 1995, 1996, 1997, 1999 David Carlisle, Sebastian Rahtz
  12 %% This file is part of the `Hyperref Bundle'.
  13 %% -------------------------------------------
  14 %%
  15 %% It may be distributed under the conditions of the LaTeX Project Public
  16 %% License, either version 1.2 of this license or (at your option) any
  17 %% later version.  The latest version of this license is in
  18 %%    http://www.latex-project.org/lppl.txt
  19 %% and version 1.2 or later is part of all distributions of LaTeX
  20 %% version 1999/12/01 or later.
  21 %%
  22 %% The list of all files belonging to the `Hyperref Bundle' is
  23 %% given in the file `manifest.txt'.
  24 \ProvidesPackage{backref}%
  25   [\filedate\space v\fileversion\space Bibliographical back referencing]
  26 \newif\ifBR@verbose
  27 \@ifundefined{ifHy@verbose}{%
  28   \BR@verbosefalse
  29 }{%
  30   \let\ifBR@verbose\ifHy@verbose
  31 }
  32 \DeclareOption{verbose}{\BR@verbosetrue}
  33 \long\def\page@backref#1#2#3{#1}
  34 \long\def\section@backref#1#2#3{#2}
  35 \long\def\hyper@section@backref#1#2#3{\hyperlink{#3}{#2}}
  36 \long\def\hyper@page@backref#1#2#3{\hyperlink{page.#1}{#1}}
  37 \def\backrefpagesname{pages}
  38 \def\backrefsectionsname{sections}
  39 \DeclareOption{pageref}{%
  40   \def\backref{\backrefpagesname\ }%
  41   \let\backrefxxx\page@backref
  42 }
  43 \DeclareOption{ref}{%
  44   \def\backref{\backrefsectionsname\ }%
  45   \let\backrefxxx\section@backref
  46 }
  47 \DeclareOption{hyperref}{%
  48   \def\backref{}\let\backrefxxx\hyper@section@backref
  49 }
  50 \DeclareOption{hyperpageref}{%
  51   \def\backref{}\let\backrefxxx\hyper@page@backref
  52 }
  53 \ExecuteOptions{pageref}
  54 \ProcessOptions
  55 \def\BR@bibitem{\@ifnextchar[\BR@@lbibitem\BR@@bibitem}
  56 \def\BR@@lbibitem[#1]#2#3\par{%
  57   \BRorg@bibitem[#1]{#2}#3
  58   \newblock
  59   \backref{\csname br@#2\endcsname}%
  60   \par
  61 }%
  62 \def\BR@@bibitem#1#2\par{%
  63   \BRorg@bibitem{#1}#2
  64   \newblock
  65   \backref{\csname br@#1\endcsname}%
  66   \par
  67 }
  68 \@ifundefined{newblock}{\def\newblock{\par}}{}
  69 \def\backcite#1#2{%
  70   \@for\x:=#1\do{%
  71     \edef\x{\expandafter\@firstofone\x\@empty}%
  72     \expandafter\ifx\csname br@\x\endcsname\relax
  73       \expandafter\protected@xdef\csname br@\x\endcsname{%
  74         \protect\backrefxxx#2%
  75       }%
  76     \else
  77       \begingroup
  78         \expandafter\def\expandafter\reserved@a\expandafter{%
  79           \backrefxxx#2%
  80         }%
  81         \let\BRorg@backrefxxx\backrefxxx
  82         \global\let\BR@found=N%
  83         \long\def\backrefxxx##1##2##3{%
  84           \expandafter\def\expandafter\reserved@b\expandafter{%
  85             \BRorg@backrefxxx{##1}{##2}{##3}%
  86           }%
  87           \ifx\reserved@a\reserved@b
  88             \global\let\BR@found=Y%
  89           \fi
  90         }%
  91         \setbox\@tempboxa\hbox{\csname br@\x\endcsname}%
  92       \endgroup
  93       \if N\BR@found
  94         \expandafter\protected@xdef\csname br@\x\endcsname{%
  95           \csname br@\x\endcsname, %
  96           \protect\backrefxxx#2%
  97         }%
  98       \fi
  99     \fi
 100   }%
 101 }
 102 \def\@currentHref{}
 103 \AtBeginDocument{%
 104   \let\BRorg@bibitem\bibitem
 105   \let\bibitem\BR@bibitem
 106   \let\BRorg@thebibliography\thebibliography
 107   \def\thebibliography{%
 108     \@starttoc{brf}{}%
 109     \BRorg@thebibliography
 110   }%
 111   \@ifundefined{NAT@parse}{%
 112     \global\let\BRorg@citex\@citex
 113     \global\let\@citex\BR@citex
 114   }{%
 115     \PackageInfo{backref}{** backref set up for natbib **}%
 116   }%
 117 }
 118 \def\BR@citex[#1]#2{%
 119   \BRorg@citex[#1]{#2}%
 120   \ifBR@verbose
 121     \PackageInfo{backref}{back cite \string`#2\string'}%
 122   \fi
 123   \Hy@backout{#2}%
 124 }
 125 \@ifpackageloaded{chicago}{%
 126   \let\BRorg@citedatax\@citedatax
 127   \def\@citedatax[#1]#2{%
 128     \BRorg@citedatax[#1]{#2}%
 129     \Hy@backout{#2}%
 130   }%
 131 }{}
 132 \def\Hy@backout#1{%
 133   \@bsphack
 134   \ifx\@empty\@currentlabel
 135     \protected@write\@auxout{}{%
 136       \string\@writefile{brf}{%
 137         \string\backcite{#1}{{\thepage}{(document)}{Doc-Start}}%
 138       }%
 139     }%
 140   \else
 141    \protected@write\@auxout{}{%
 142      \string\@writefile{brf}{%
 143        \string\backcite{#1}{{\thepage}{\@currentlabel}{\@currentHref}}%
 144      }%
 145    }%
 146   \fi
 147   \@esphack
 148 }
 149 \endinput
 150 %%
 151 %% End of file `backref.sty'.