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authorKarl Berry <karl@freefriends.org>2021-12-20 22:50:40 +0000
committerKarl Berry <karl@freefriends.org>2021-12-20 22:50:40 +0000
commit956b4d32335efcb457be1f3e20529bce220968ea (patch)
treef23f49f7184b1c2e49c204d403bfdfcb40515f6c /Master/texmf-dist/tex/generic/tex4ht
parent8bb375368aa88b921556812993147e5b470131c4 (diff)
backlinks for biblatex, tex4hr r1037
git-svn-id: svn://tug.org/texlive/trunk@61362 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/tex/generic/tex4ht')
-rw-r--r--Master/texmf-dist/tex/generic/tex4ht/biblatex.4ht54
1 files changed, 52 insertions, 2 deletions
diff --git a/Master/texmf-dist/tex/generic/tex4ht/biblatex.4ht b/Master/texmf-dist/tex/generic/tex4ht/biblatex.4ht
index 2db5ba238ff..ee7346a4829 100644
--- a/Master/texmf-dist/tex/generic/tex4ht/biblatex.4ht
+++ b/Master/texmf-dist/tex/generic/tex4ht/biblatex.4ht
@@ -1,4 +1,4 @@
-% biblatex.4ht (2021-08-14-14:10), generated from tex4ht-4ht.tex
+% biblatex.4ht (2021-12-20-14:48), generated from tex4ht-4ht.tex
% Copyright 2007-2009 Eitan M. Gurari
% Copyright 2009-2021 TeX Users Group
%
@@ -17,7 +17,7 @@
%
% If you modify this program, changing the
% version identification would be appreciated.
-\immediate\write-1{version 2021-08-14-14:10}
+\immediate\write-1{version 2021-12-20-14:48}
\def\make:blx:ver#1.#2#3\relax{%
%\ifdim#1pt< 3pt \xdef\blx:ver:no{2}\else\xdef\blx:ver:no{3}\fi%
@@ -598,6 +598,56 @@
\@fntORI}% frenchle
\let\do\:temp
+ \pend:defI\blx@backref{%
+ % prevent duplicate backlink on the same page
+ \ifcsdef{bk##1\thepage}{}{%
+ % insert link to the page
+ \html:addr\Link-{}{x\last:haddr}\EndLink%
+ % save link to the .xref file
+ \Tag{)Q##1\thepage}{x\last:haddr}%
+ % we need to save the link destination in .xref file
+ % too, otherwise \Link command would issue warning
+ \Tag{)Qx\last:haddr}{\FileNumber}%
+ }%
+ % declare this backlink destination as used, so we don't
+ % declare another one with the same name
+ \expandafter\gdef\csname bk##1\thepage\endcsname{}%
+}
+
+% version of \hyperlink that links back to saved link in citation
+% on the given DVI page
+\def\bbx:hyperlink#1#2{
+ % first argument is destination used by Hyperref, second is page number
+ % test if we saved link to the current bibitem and page
+ \ifTag{)Q\abx@field@entrykey#2}{%
+ \Link{\LikeRef{)Q\abx@field@entrykey#2}}{}#2\EndLink%
+ }%
+ {#2}% print just page number if there is no saved link
+ }
+
+% we need to redefine pageref format, which is used for printing of
+% back link page numbers. custom \hyperlink command is used
+\DeclareListFormat{pageref}{%
+ % we redefine \hyperlink command to link page numbers in backreferences
+ % back to the citations on the given pages
+ \let\orig:hyperlink\hyperlink%
+ \let\hyperlink\bbx:hyperlink%
+ \ifnumless{\abx@pagerefstyle}{0}
+ {\usebibmacro{list:plain}%
+ \ifhyperref
+ {\hyperlink{page.#1}{#1}}
+ {#1}}
+ {\ifnumequal{\value{listcount}}{1}
+ {\usebibmacro{pageref:init}}
+ {}%
+ \usebibmacro{pageref:comp}{#1}%
+ \ifnumequal{\value{listcount}}{\value{liststop}}
+ {\usebibmacro{pageref:dump}}
+ {}}
+ \let\hyperlink\orig:hyperlink%
+}
+
+
\Hinput{biblatex}
\endinput