cmap

git-svn-id: svn://tug.org/texlive/trunk@767 c570f23f-e606-0410-a88d-b1316a301751

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+% Copyright (c) 2003-2005 Vladimir Volovich <vvv@vsu.ru>
+% cmap package -- download CMap files into PDF
+%   to make "search" and "cut-n-paste" functions work properly
+% You may distribute and/or modify this program under the terms of LPPL
+% the program consists of cmap.sty and {t1,t2a,t2b,t2c,t5}.cmap
+% Usage: put \usepackage{cmap} immediately after the \documentclass line
+% Thanks to:
+%   Han The Thanh
+%   Maxim I. Tishin
+%   Petr Sojka
+%   Werner Lemberg
+% TODO:
+%   add *.cmap files for other font encodings (contributions are welcome):
+%     TS1, OT1, OT2, LY1, IL2, OML, OMS, ...
+%   support dvips?
+% History:
+% 2003/03/07 private version
+% 2003/03/11 version 1.0: first public version
+% 2003/03/13 version 1.0a:
+%   change error to warning for non-pdftex
+%   added warnings if cmap is loaded after fontenc or babel
+%   added t5.cmap - thanks to Han The Thanh
+% 2003/03/19 version 1.0b:
+%   minor refinements
+% 2003/05/22 version 1.0c:
+%   fixed a typo due to which the package had no effect at all
+% 2004/06/16 version 1.0d (wl):
+%   add support for subfonts as used in the CJK package
+% 2005/05/03 version 1.0e:
+%   do not fail under pdftex with \pdfoutput=0 (thanks to Robin Fairbairns)
+
+\ProvidesPackage{cmap}[2004/06/16 v1.0e CMap support: searchable PDF]
+
+\@ifundefined{pdffontattr}{%
+% The cmap package can be used only with pdflatex,
+% but not with ordinary latex
+  \PackageWarningNoLine{cmap}{pdftex not detected - will not do anything}%
+  \endinput
+}\relax
+\ifnum\pdfoutput<1
+  \PackageWarningNoLine{cmap}{pdftex in DVI mode - will not do anything}
+  \expandafter\endinput
+\fi
+
+\edef\reserved@a{\noexpand\in@{,fontenc.sty,}{\@filelist}}% enc.def
+\reserved@a
+\ifin@
+\PackageWarningNoLine{cmap}{fontenc already loaded - some fonts may be unprocessed}
+\fi
+%\@ifpackageloaded{babel}{%
+%\PackageWarningNoLine{cmap}{babel already loaded - some fonts may be unprocessed}%
+%}\relax
+
+\def\extract@font{%
+  \get@external@font
+  \global\expandafter\font\font@name\external@font\relax
+  \font@name\relax
+  \cmap@hook
+  \csname\f@encoding+\f@family\endcsname
+  \csname\curr@fontshape\endcsname
+  \relax
+}
+\def\cmap@load{%
+  \edef\reserved@f{\lowercase{\def\noexpand\reserved@f{\cmap@f@encoding.cmap}}}%
+  \reserved@f
+  \IfFileExists{\reserved@f}{%
+    \immediate\pdfobj stream
+      %attr {/Type /CIDFile}
+      file {\reserved@f}%
+    \expandafter\xdef\csname cmap@set@\cmap@f@encoding\endcsname{%
+      \noexpand\expandafter\pdffontattr\noexpand\font@name{/ToUnicode \the\pdflastobj\space 0 R}}%
+  }{%
+    \global\expandafter\let\csname cmap@set@\cmap@f@encoding\endcsname\empty
+  }%
+}
+\def\cmap@hook{%
+  \@ifundefined{CJK@plane}{%
+    \edef\cmap@f@encoding{\f@encoding}%
+  }{%
+    \edef\cmap@f@encoding{\f@encoding\CJK@plane}%
+  }%
+  \@ifundefined{cmap@set@\cmap@f@encoding}{\cmap@load}\relax
+  \csname cmap@set@\cmap@f@encoding\endcsname
+}
+
+\endinput