% pdfwebtofront.tex % Code from knuth.drv in https://github.com/oberdiek/latex-tds % 2020/05/21 v1.0 by Andreas Scherer. % % This file is part of project https://github.com/ascherer/cwebbin % and may be distributed under the MIT License or the LaTeX Project % Public License. % % Move table-of-contents page to the front in PDF output. % Works with pdftex and xetex in connection with either 'webmac.tex' % for Pascal/WEB programs or 'cwebmac.tex' for C/CWEB programs. % \ifx\detokenize\undefined\endinput\fi \newread\testread \openin\testread=\contentsfile\relax \ifeof\testread % First run \else % Second run \let\ORGcon\con \let\ORGtoc\topofcontents \ifx\undefined\grouptitle \mark{1} % WEB: let's start with section '1'. \else\def\topofcontents{\ORGtoc\gtitle={\the\grouptitle}}\fi % CWEB % Redefine '\con' to be invoked before the first '\N' (starred section). \def\con{% \def\:{\par\hangindent 2em} % Fix for 'bibtex.web'. \begingroup \let\end\relax \ORGcon\eject \endgroup \let\con\end }% % Redefine '\N’ to invoke redefined '\con' before switching back % to original '\N'. \expandafter\let\csname ORGN\expandafter\endcsname \csname N\endcsname \expandafter\outer\expandafter\def\csname N\endcsname{% \con \expandafter\let\csname N\expandafter\endcsname \csname ORGN\endcsname \csname N\endcsname }% % Special variant of the above for 'mf.web' and 'tex.web'. They put % their tables-of-contents on a sparce 'page 2' and start on page '3'. \begingroup \def\num{0}% \edef\x{\jobname}% \edef\y{\detokenize{tex}}% \ifx\x\y \def\num{1}\else \edef\y{\detokenize{mf}}% \ifx\x\y \def\num{1}\else \edef\y{\detokenize{pdftex}}% \ifx\x\y \def\num{1}\else \edef\y{\detokenize{xetex}}% \ifx\x\y \def\num{1}\fi\fi\fi\fi \expandafter\endgroup\ifnum\num=1 % \def\contentspagenumber{2}% \let\ORGpageno\pageno \def\pageno{% \let\pageno\ORGpageno \expandafter\let\csname ORGN\expandafter\endcsname \csname N\endcsname \expandafter\outer\expandafter\def\csname N\endcsname{% \con \expandafter\let\csname N\expandafter\endcsname \csname ORGN\endcsname \csname N\endcsname }% \pageno }% \fi \fi