placeins.sty

%  P L A C E I N S . S T Y          ver 2.2  April 18, 2005
%  Donald Arseneau                  asnd@triumf.ca
%  Keep floats `in their place'; don't let them float into another section.
%  Instructions are below.
%
%  placeins.sty is freely released to the public domain.


\def\@fb@botlist{\@botlist}
\def\@fb@topbarrier{\suppressfloats[t]}

\catcode`\V=14 % `V' is a comment character unless [verbose]

\@ifundefined{DeclareOption}{}%
{\DeclareOption{below}{\def\@fb@botlist{}}
 \DeclareOption{above}{\def\@fb@topbarrier{}}
 \DeclareOption{section}{\AtBeginDocument{%
     \expandafter\renewcommand\expandafter\section\expandafter
       {\expandafter\@fb@secFB\section}%
     \newcommand\@fb@secFB{\FloatBarrier
     \gdef\@fb@afterHHook{\@fb@topbarrier \gdef\@fb@afterHHook{}}}
     \g@addto@macro\@afterheading{\@fb@afterHHook}
     \gdef\@fb@afterHHook{}
  }}
 \DeclareOption{verbose}{\catcode`\V=9 }% Activate things after `V'
 \ProvidesPackage{placeins}[2005/04/18 \space  v 2.2]
 \ProcessOptions 
} % end of \@ifundefined

\def\FloatBarrier{\par\begingroup \let\@elt\relax
V\edef\@tempa{\write\m@ne{Package placeins Info: Float barrier, from
V  input line \the\inputlineno, processed on page \thepage, lands on
V  page \noexpand\thepage. }}\@tempa
 \edef\@tempa{\@fb@botlist\@deferlist\@dbldeferlist}%
 \ifx\@tempa\@empty V\PackageInfo{placeins}{No floats held,}%
 \else
    \ifx\@fltovf\relax % my indicator of recursion
       \if@firstcolumn V\PackageWarning{placeins}{Some floats are stuck,}%
         \clearpage 
       \else V\PackageInfo{placeins}{Eject a column and check again:}%
         \null\newpage\FloatBarrier 
       \fi
    \else V\PackageInfo{placeins}{Must dump some floats}%
       \newpage \let\@fltovf\relax V\PackageInfo{placeins}{Check again:}%
       \FloatBarrier % recurse once only
 \fi\fi \endgroup
 \@fb@topbarrier }

\catcode`\V=11
\endinput