new latex package everyhook (27sep10)

git-svn-id: svn://tug.org/texlive/trunk@19935 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 128 insertions, 0 deletions

diff --git a/Master/texmf-dist/tex/latex/everyhook/everyhook.sty b/Master/texmf-dist/tex/latex/everyhook/everyhook.sty
new file mode 100644
index 00000000000..6f546801a64
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+++ b/Master/texmf-dist/tex/latex/everyhook/everyhook.sty
@@ -0,0 +1,128 @@
+%%
+%% This is file `everyhook.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% everyhook.dtx  (with options: `package')
+%% Copyright (C) 2010 by Stephen Checkoway
+%% 
+%% This file may be distributed and/or modified under the
+%% conditions of the LaTeX Project Public License, either
+%% version 1.3c of this license or (at your option) any later
+%% version. The latest version of this license is in:
+%% 
+%% http://www.latex-project.org/lppl.txt
+%% 
+%% and version 1.3c or later is part of all distributions of
+%% LaTeX version 2005/12/01 or later.
+%% 
+%% This work has the LPPL maintenance status 'maintained'.
+%% 
+%% The Current Maintainer of this work is Stephen Checkoway.
+%% 
+%% This work consists of everyhook.dtx and the derived file
+%% everyhook.sty.
+%% 
+\NeedsTeXFormat{LaTeX2e}[1999/12/01]
+\RequirePackage{svn-prov}
+\ProvidesPackageSVN
+{$Id: everyhook.dtx 9 2010-09-27 07:39:15Z steve $}
+[v1.0 \revinfo\ Hooks for low level TeX everyX primitives.]
+\RequirePackage{etoolbox}
+\def\eh@definehook#1#2{%
+\cslet{eh@every#1}#2%
+\newtoks#2%
+#2\csuse{eh@every#1}%
+\csdef{eh@pre#1}{}%
+\csdef{eh@post#1}{}%
+\csuse{eh@every#1}\expandafter{\csname eh@pre#1\expandafter\endcsname
+\expandafter\the\expandafter\expandafter\expandafter#2%
+\csname eh@post#1\endcsname}%
+}
+\eh@definehook{par}\everypar
+\eh@definehook{math}\frozen@everymath
+\eh@definehook{display}\frozen@everydisplay
+\eh@definehook{hbox}\everyhbox
+\eh@definehook{vbox}\everyvbox
+\eh@definehook{cr}\everycr
+\undef\eh@definehook
+\def\eh@hookseparator{}
+\def\eh@checkhook#1#2{%
+\ifcsdef{eh@every#1}{}{\PackageError{everyhook}{Argument #1 to
+\protect#2\space is invalid}{There is no hook for
+\protect\every#1.}}%
+}
+\def\eh@checkhooknotempty#1#2#3{%
+\eh@checkhook{#2}#3%
+\ifcsempty{eh@#1#2}{\PackageError{everyhook}{The #1 hook for
+\protect\every#2\space is empty}{I have seen too many
+\protect#3{#2}s.}{}}%
+}
+\newrobustcmd\PushPreHook[2]{%
+\eh@checkhook{#1}\PushPreHook
+\def\eh@tempi{#2}%
+\letcs\eh@tempii{eh@pre#1}%
+\expandafter\gdef\csname eh@pre#1\expandafter\expandafter
+\expandafter\endcsname\expandafter\expandafter
+\expandafter{\expandafter\eh@tempi\expandafter
+             \eh@hookseparator\eh@tempii}%
+\undef\eh@tempi
+\undef\eh@tempii
+}
+\newrobustcmd\PopPreHook[1]{%
+\eh@checkhooknotempty{pre}{#1}\PopPreHook
+\expandafter\eh@popprehook\csname eh@pre#1\expandafter
+\expandafter\expandafter\endcsname
+\csname eh@pre#1\endcsname\eh@hookend
+}
+\def\eh@popprehook#1#2\eh@hookseparator#3\eh@hookend{\gdef#1{#3}}
+\newrobustcmd\PushPostHook[2]{%
+\eh@checkhook{#1}\PushPostHook
+\letcs\eh@tempi{eh@post#1}%
+\expandafter\gdef\csname eh@post#1\expandafter\endcsname
+\expandafter{\eh@tempi\eh@hookseparator#2}%
+\undef\eh@tempi
+}
+\newrobustcmd\PopPostHook[1]{%
+\eh@checkhooknotempty{post}{#1}\PopPostHook
+\letcs\eh@tempi{eh@post#1}%
+\expandafter\eh@popposthook\csname eh@post#1\expandafter
+\endcsname\expandafter{\expandafter}\eh@tempi
+\eh@hookend\eh@hookseparator\eh@sentinel\eh@hookend
+\undef\eh@tempi
+}
+\def\eh@popposthook#1#2\eh@hookseparator#3\eh@hookseparator#4\eh@hookend{%
+\def\eh@tempi{#4}%
+\ifdefequal\eh@sentinel\eh@tempi%
+{\gdef#1{#2}\undef\eh@tempi}%
+{\eh@popposthook#1{#2\eh@hookseparator#3}\eh@hookseparator#4\eh@hookend}%
+}
+\def\eh@sentinel{\eh@sentinel}
+\newrobustcmd\ClearPreHook[1]{%
+\eh@checkhook{#1}\ClearPreHook
+\global\csdef{eh@pre#1}{}%
+}
+\newrobustcmd\ClearPostHook[1]{%
+\eh@checkhook{#1}\ClearPostHook
+\global\csdef{eh@post#1}{}%
+}
+\newrobustcmd\SavePreHook[2]{%
+\eh@checkhook{#1}\SavePreHook
+\letcs#2{eh@pre#1}%
+}
+\newrobustcmd\SavePostHook[2]{%
+\eh@checkhook{#1}\SavePostHook
+\letcs#2{eh@post#1}%
+}
+\newrobustcmd\RestorePreHook[2]{%
+\eh@checkhook{#1}\RestorePreHook
+\global\cslet{eh@pre#1}#2%
+}
+\newrobustcmd\RestorePostHook[2]{%
+\eh@checkhook{#1}\RestorePostHook
+\global\cslet{eh@post#1}#2%
+}
+\endinput
+%%
+%% End of file `everyhook.sty'.