245 lines
6.0 KiB
TeX
245 lines
6.0 KiB
TeX
%%
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%% This is file `sref.sty',
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%% generated with the docstrip utility.
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%%
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%% The original source files were:
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%%
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%% sref.dtx (with options: `package')
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%%
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\NeedsTeXFormat{LaTeX2e}[1999/12/01]
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\ProvidesPackage{sref}[2016/04/07 v1.2 Semantic Cross-References]
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\newif\ifextrefs\extrefsfalse
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\DeclareOption{extrefs}{\extrefstrue}
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\ProcessOptions
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\RequirePackage{metakeys}
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\RequirePackage{xspace}
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\RequirePackage{etoolbox}
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\addmetakey{sref}{linktext}
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\addmetakey{sref}{fallback}
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\addmetakey{sref}{pre}
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\addmetakey{sref}{post}
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\newcommand\sref[2][]{%
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\metasetkeys{sref}{#1}%
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\ifcsundef{sref@part}{%
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\sref@hlink[\sref@linktext]{#2}{\sref@fallback}{\sref@pre}{\sref@post}%
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}{%
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\sref@hlink[\sref@linktext]{\sref@part @#2}{\sref@fallback}{\sref@pre}{\sref@post}%
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}%
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\xspace%
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}%
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\newcommand\srefs[3][]{%
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\def\@test{#1}%
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\ifx\@test\@empty%
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\sref{#2} and \sref{#3}%
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\else%
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#1%
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\fi%
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}%
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\newcommand\srefl[3][]{%
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\def\@test{#1}%
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\ifx\@test\@empty%
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\sref{#2} to \sref{#3}%
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\else%
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#1%
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\fi%
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}%
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\newcommand\spageref[1]{%
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\ifcsundef{sref@part}{%
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\sref@pageref{#1}%
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}{%
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\sref@pageref{\sref@part @#1}%
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}%
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}%
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\newif\ifhref\hreffalse%
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\AtBeginDocument{%
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\@ifpackageloaded{hyperref}{%
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\hreftrue%
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}{%
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\hreffalse%
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}%
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}%
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\newcommand\sref@href@ifh[2]{%
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\ifhref%
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\href{#1}{#2}%
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\else%
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#2%
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\fi%
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}%
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\newcommand\sref@hlink@ifh[2]{%
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\ifhref%
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\hyperlink{#1}{#2}%
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\else%
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#2%
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\fi%
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}%
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\newcommand\sref@target@ifh[2]{%
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\ifhref%
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\hypertarget{#1}{#2}%
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\else%
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#2%
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\fi%
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}%
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\def\sref@target{%
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\ifx\sref@id\@empty%
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\relax%
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\else%
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\edef\@target{sref@\ifcsundef{sref@part}{}{\sref@part @}\sref@id @target}%
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\sref@target@ifh\@target{}%
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\fi%
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}%
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\newcommand\@sref@def[3]{\csgdef{sref@#1@#2}{#3}}
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\ifextrefs%
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\newwrite\refs@file%
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\else%
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\def\refs@file{\@auxout}%
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\fi%
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\newcommand\sref@def[3]{%
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%\@sref@def{#1}{#2}{#3}%
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\protected@write\refs@file{}{\string\@sref@def{#1}{#2}{#3}}%
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}%
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\addmetakey{srefaddidkey}{prefix}
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\newcommand\srefaddidkey[2][]{%
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\metasetkeys{srefaddidkey}{#1}%
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\@metakeys@ext@clear@keys{#2}{sref@id}{}% id cannot have a default
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\metakeys@ext@clear@keys{#2}{id}{}%
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\metakeys@ext@showkeys{#2}{id}%
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\define@key{#2}{id}{%
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\edef\sref@id{\srefaddidkey@prefix ##1}%
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%\expandafter\edef\csname #2@id\endcsname{\srefaddidkey@prefix ##1}%
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\csedef{#2@id}{\srefaddidkey@prefix ##1}%
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}%
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}%
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\newcommand\makeextrefs[1]{%
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\gdef\sref@part{#1}%
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\makeatletter%
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\IfFileExists{\jobname.refs}{\input{\jobname.refs}}{}%
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\immediate\openout\refs@file=\jobname.refs
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\makeatother%
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}%
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\newcommand\sref@label[2]{%
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\sref@def{\ifcsundef{sref@part}{}{\sref@part @}#2}{page}{\thepage}%
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\sref@def{\ifcsundef{sref@part}{}{\sref@part @}#2}{label}{#1}%
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}%
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\newcommand\sreflabel[2]{\sref@label{#1 \@currentlabel}{#2}}
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\newcommand\sref@label@id[1]{%
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\ifx\sref@id\@empty%
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\relax%
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\else%
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\sref@label{#1}{\sref@id}%
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\fi%
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}%
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\newcommand\sref@label@id@arg[2]{%
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\def\@@id{#2}
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\ifx\@@id\@empty%
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\relax%
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\else%
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\sref@label{#1}{\@@id}%
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\fi%
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}%
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\newcommand\sref@hlink[5][]{%
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\edef\@linktext{#1}%
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\edef\@fallback{#3}%
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\ifcsundef{sref@#2@label}{%
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\ifx\@fallback\@empty% warn about undefined links and show a substitute
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\protect\G@refundefinedtrue\@latex@warning{reference #2 undefined}%
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\ifx\@linktext\@empty%
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?#2?%
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\else%
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\@linktext%
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\fi%
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\else%
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\protect\G@refundefinedtrue\@latex@warning{using fallback for undefined reference #2}%
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\@fallback%
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\fi
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}{%
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\edef\@link{#4\@nameuse{sref@#2@label}#5}% retrieve the reference label and prepost it
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\ifx\@linktext\@empty%
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\sref@hlink@ifh{sref@#2@target}{\@link}%
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\else%
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\sref@hlink@ifh{sref@#2@target}{\@linktext}%
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\fi%
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}%
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}%
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\newcommand\sref@page@label[1]{p.~{#1}}
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\newcommand\sref@pageref[1]{%
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\ifcsundef{sref@#1@page}{%
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\protect\G@refundefinedtrue\@latex@warning{reference #1 undefined}\sref@page@label{??}%
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}{%
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\sref@hlink@ifh{sref@#1@target}{\sref@page@label{\@nameuse{sref@#1@page}}}%
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}%
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}%
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\newcommand\sref@href[3][]{%
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\edef\@linktext{#1}%
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\ifcsundef{sref@#2@label}{%
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\protect\G@refundefinedtrue\@latex@warning{reference #2 undefined}??%
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}{%
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\ifcsundef{sref@#3@URI}{%
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\protect\G@refundefinedtrue\@latex@warning{external refs of type #3 undefined}??%
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}{%
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\edef\@uri{\@nameuse{sref@#3@URI}.pdf\#sref@#2@target}%
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\edef\@label{\ifx\@linktext\@empty\@nameuse{sref@#2@label}\else\@linktext\fi}%
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\sref@href@ifh\@uri\@label%
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}%
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}%
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}%
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\ifextrefs%
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\newcommand\extref[3][]{%
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\def\theextref{\sref@href[#1]{#2@#3}{#2}}%
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\csname doextref@#2\endcsname%
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}%
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\else%
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\newcommand\extref[3][]{\sref[#1]{#3}}%
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\fi%
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\ifextrefs%
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\newcommand\extpageref[3][]{%
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\def\theextref{\sref@pageref{#2@#3}}%
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\csname doextpageref@#2\endcsname%
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}%
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\else%
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\newcommand\extpageref[3][]{\spageref{#3}}%
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\fi%
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\newcommand\extrefstyle[2]{\csgdef{doextref@#1}{#2}}%
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\newcommand\extpagerefstyle[2]{\csgdef{doextpageref@#1}{#2}}%
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\newcommand\inputrefs[2]{%
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%\@namedef{sref@#1@URI}{#2}%
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\csdef{sref@#1@URI}{#2}%
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\extrefstyle{#1}{\theextref}\extpagerefstyle{#1}{\theextref}%
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\makeatletter%
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\IfFileExists{#2.refs}{%
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\message{Reading external references: #2.refs}\input{#2.refs}%
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}{%
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\PackageError{sref}{Reference file #2.refs does not exist}%
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{Maybe you have to run LaTeX on #2.tex first}}%
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\makeatother%
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}%
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\srefaddidkey{sequation}%
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\def\sref@sequation@heading{equation}%
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\newenvironment{sequation}[1][]{%
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\metasetkeys{sequation}{#1}%
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\ifx\sref@id\@empty%
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\begin{displaymath}%
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\else% no id, using equation*
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\begin{equation}%
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\sref@target\sref@label@id{\sref@sequation@heading~(\theequation)}%
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\fi%
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}{%
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\ifx\sref@id\@empty%
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\end{displaymath}%
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\else%
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\end{equation}%
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\fi%
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}%
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\newenvironment{seqnarray}[1][]{%
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\metasetkeys{sequation}{#1}%
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\begin{eqnarray*}%
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\sref@target%
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\sref@label@id{\sref@sequation@heading~(\theequation)}%
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}{%
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\end{eqnarray*}%
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}%
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\newcommand\withcite[2]{#2~\cite{#1}}%
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\newenvironment{withcitation}[1]{\def\citeit{\cite{#1}}}{}%
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\endinput
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%%
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%% End of file `sref.sty'.
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