% \def\filename{amsbooka.dtx}
% \def\fileversion{2.08}
% \def\filedate{2014/07/11}
%
% \iffalse meta-comment
%
% American Mathematical Society
% Technical Support
% Publications Technical Group
% 201 Charles Street
% Providence, RI 02904
% USA
% tel: (401) 455-4080
%      (800) 321-4267 (USA and Canada only)
% fax: (401) 331-3842
% email: tech-support@ams.org
%
% Copyright 1995, 2008, 2014 American Mathematical Society.
%
% This work 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 the American Mathematical
% Society.
% 
% \fi
%
% \iffalse
%<*driver>
\documentclass{amsdtx}

\CodelineIndex

\begin{document}
\title{The \pkg{amsbooka} package}
\author{American Mathematical Society\\Barbara Beeton}
\date{Version \fileversion, \filedate}
\DocInput{amsbooka.dtx}
\end{document}
%</driver>
% \fi
%
% \maketitle
%
% \MakeShortVerb\|
%
% \section{Introduction}
%
%    This package is an add-on to the \amslatex/ document classes for
%    monographs.  It provides the facility to include an author's name
%    with a part or chapter title of a monograph, and automatically pass
%    the author information on to the table of contents for presentation
%    in a style compatible with the regular (series-specific) TOC style.
%    It also provides facilities to add elements often associated with
%    separately authored chapters, including a copyright notice,
%    uunumbered footnotes, and a section-level bibliography.
%
%    This package may become part of the \amslatex/ collection of
%    document classes and related packages.
%
% \StopEventually{}
%
%    Standard file identification.
%    \begin{macrocode}
\NeedsTeXFormat{LaTeX2e}% LaTeX 2.09 can't be used (nor non-LaTeX)
[1995/06/01]% LaTeX date must be June 1995 or later
\ProvidesPackage{amsbooka}[2014/07/11 v2.08 monograph part/chapter authors]
%    \end{macrocode}
%
% \section{User instructions}
%
%    \textbf{Getting started:} The front matter of the book must include
%    (at least) a \cn{title} and \cn{\maketitle}.  If these are absent,
%    an unintelligible error message will result.  This is caused by
%    the redefinition of the \cn{author} command, which is ordinarily
%    expected to occur only in the book's front matter.
%
% \subsection{Chapter and part headings}
%
%    A part or chapter with no associated author is input in the usual
%    way:\\[2pt]
%    \verb|\part{|\<full title>\verb|}|\\
%    \verb|\chapter[|\<short title>\verb|]{|\<full title>\verb|}|\\[2pt]
%    The part or chapter title will be set in the regular style for
%    the series.
%
%    If an author is to be associated with a chapter, then the short
%    title \emph{must} be provided, and the author is included within
%    the full title, thus:\\[2pt]
%    \verb|\chapter[|\<short title>\verb|]{|\<full title>%
%    \verb| \author{|\<author name>\verb|}}|
%
%    \vspace{2pt}
%
%    This works for both \verb|\chapter| and \verb|\chapter*|.
%    Similarly, a part title with an associated author must include
%    the author as follows:\\[2pt]
%    \verb|\part{|\<full title>\verb| \author{|\<author name>\verb|}}|\\[2pt]
%    No short title is required for a part title with author.
%
%    The author name will be set following the title and also included
%    in the table of contents, both in the appropriate style for the
%    series.
%
%    When an author is specified for a chapter, the left-hand running
%    head will be the author name; the right-hand running head will
%    be the chapter title, taken from the short title.  For a chapter
%    with no specified author, the running heads will be the same as
%    for an ``ordinary'' monograph: chapter title on the left and
%    section heading on the right, except that, if the chapter has
%    no sections, the chapter title will also appear on the right.
%
%    By default, ``authored'' chapters will be numbered, but chapter
%    numbers will be omitted from the running heads.  (Most volumes
%    encountered so far in this style are essentially collections.)
%    Chapter numbers can be restored to the running heads by using the
%    documentclass option \opt{[rhchapnum]}.  In the present version
%    of \pkg{amsbooka} this is an all-or-nothing proposition, but
%    this decision may be reconsidered if an example emerges in which
%    there is justification for including chapter numbers in some
%    running heads but not in others.
%
%    Similarly, the ``standard'' monograph running heads (chapter on
%    the left, section on the right) can be forced for all authored
%    chapters by specifying the documentclass option \opt{[rhchapsec]}.
%    With this option, chapter numbers will not be suppressed.  Again,
%    this is an all-or-nothing choice.
%
% \subsection{Elements at the bottom of the first page}
%
%    If information such as a previous publication or an alternate
%    source is noted, this should appear on the first page of the
%    chapter as an unnumbered footnote.  Enter this immediately
%    after the \verb|\chapter| title, using this command:\\[2pt]
%    \verb|\barefootnote{|\<footnote text>\verb|}|
%
%    \vspace{2pt}
%
%    If a separate copyright notice is required for a chapter,
%    enter it as follows:\\[2pt]
%    \verb|\copyrightinfo{|\<year>\verb|}{|\<copyright holder>\verb|}|\\[2pt]
%    If this command is not input for a chapter, no notice will appear.
%
% \subsection{Bibliography within a chapter}
%
%    The bibliography of a monograph usually appears as a separate chapter.
%    However, for collections addressed by the present package, each
%    individual chapter may have its own reference list, which should
%    be treated as a section.
%    
%    If the chapter bibliography has been prepared for \pkg{amsrefs},
%    specify \env{bibsection} to obtain the proper format.  (See the
%    \pkg{amsrefs} documentation for details.)
%
%    If the chapter bibliography has been prepared using \BibTeX,
%    substitute\\[2pt]
%    \verb|\begin{inchapterbibliography}|\\
%    \verb|...|\\
%    \verb|\end{inchapterbibliography}|\\[2pt]
%    for the usual \env{thebibliography} environment.  The actual contents
%    of the bibliography should be included within the chapter file,
%    not read in from a separate \fn{.bbl} file.  If the heading of
%    this section needs to be changed,\\[2pt]
%    \verb|\renewcommand{\bibname}{...}|
%    
%
% \section{Implementation}
%
%    This package is meant for use with all AMS monograph series.
%    Two series, GSM and STML, have special requirements, so provide
%    matching strings that can be used to identify them.  Other series
%    may be added to this list, so also provide a switch that can be
%    used to identify them collectively.
%    \begin{macrocode}
\def\@gsm{gsm-l}
\def\@stml{stml-l}
\newif\if@ruledchapterhead
\@ruledchapterheadfalse
\ifx\@classname\@gsm \@ruledchapterheadtrue
  \else\ifx\@classname\@stml \@ruledchapterheadtrue
  \fi
\fi
%    \end{macrocode}
%
%    Some ramifications with running heads are best addressed with
%    defaults that can be overridden by options.
%
%    First option: force ``standard'' (chapter/section) running heads.
%    \begin{macrocode}
\newif\if@rhchapnum
\@rhchapnumfalse
\DeclareOption{rhchapnum}{\@rhchapnumtrue}
%    \end{macrocode}
%
%    Next option: force ``standard'' (chapter/section) running heads.
%    This also turns on chapter numbers in the running heads.
%    \begin{macrocode}
\newif\if@rhchapsec
\@rhchapsecfalse
\DeclareOption{rhchapsec}{\@rhchapsectrue \@rhchapnumtrue}
%    \end{macrocode}
%
%    \begin{macrocode}
\ProcessOptions\relax
%    \end{macrocode}
%
% \subsection{Chapter headings}
%
%  \begin{macro}{@schaptera}
%  \begin{macro}{@schapterb}
%    In order to associate an author name with an unnumbered chapter,
%    we need to redefine \cs{@schapter} to accept a bracketed optional
%    version for the running head.  The original version, without
%    optional text, is still required for the bibliography and index
%    as well as for other unauthored chapters.  Use the original
%    \cs{@schapter} for this by giving it another name, and check
%    again for the presence of a bracketed option.
%    \begin{macrocode}
\let\@schapterb\@schapter
\def\@schapter{\secdef\@schaptera\@schapterb}
\def\@schaptera[#1]#2{\typeout{#1}%
  \let\@secnumber\@empty
  \def\@toclevel{0}%
  \ifx\chaptername\appendixname \@tocwriteb\tocappendix{chapter}{#2}%
  \else \@tocwriteb\tocchapter{chapter}{#2}\fi
  \chaptermark{#1}%
  \addtocontents{lof}{\protect\addvspace{10\p@}}%
  \addtocontents{lot}{\protect\addvspace{10\p@}}%
  \@makeschapterhead{#2}\@afterheading
}
%    \end{macrocode}
%  \end{macro}
%  \end{macro}
%
%  \begin{macro}{@makechapterhead}
%  \begin{macro}{@makeschapterhead}
%    Redefine the commands \cs{@makechapterhead} and \cs{@makeschapterhead}
%    from the regular monograph document classes, handling special cases
%    as necessary.
%    \begin{macrocode}
\def\@makechapterhead#1{%
  \ifx\@classname\@gsm \@makegsmchapterhead{#1}%
  \else \ifx\@classname\@stml \@makestmlchapterhead{#1}%
  \else \@makeplainchapterhead{#1}%
  \fi \fi
}
\newif\if@schapter \@schapterfalse
\def\@makeschapterhead#1{%
  \@schaptertrue
  \ifx\@classname\@gsm \@makegsmchapterhead{#1}%
  \else \ifx\@classname\@stml \@makestmlchapterhead{#1}%
  \else \@makeplainschapterhead{#1}%
  \fi \fi
}
%    \end{macrocode}
%  \end{macro}
%  \end{macro}
%
%  \begin{macro}{@makeplainchapterhead}
%  \begin{macro}{@makeschapterhead}
%    The ``plain'' chapter head style is used for nearly all AMS
%    monograph series.  The title is set in the usual style, with
%    the author name centered below in small caps.\\
%    The author name is set up to be the left-hand running head,
%    as it would be for a journal or proceedings article.  This
%    will be effected only for chapters with an \cn{author}.
%    It can also be suppressed with the \opt{[rhchapsec]} option.\\
%    If a copyright notice is included, suppress it for the next
%    chapter.
%    \begin{macrocode}
\def\@makeplainchapterhead#1{%
  \global\topskip 7.5pc\relax
  \@setcopyright
  \let\copyrightyear\@empty
  \begingroup
  \def\title{}%
  \def\author##1{%
    \if@rhchapsec
    \else \markleft{\MakeUppercase{##1}}%
    \fi
    \vskip1pc\fontsize{\@xiipt}{14}\mdseries\textsc{##1}}%
  \fontsize{\@xivpt}{18}\bfseries\centering
    \ifnum\c@secnumdepth>\m@ne
      \leavevmode \hskip-\leftskip
      \rlap{\vbox to\z@{\vss
          \centerline{\normalsize\mdseries
              \MakeUppercase{\chaptername}\enspace\thechapter}
          \vskip 3pc}}\hskip\leftskip
    \fi
    #1\par \endgroup
  \skip@34\p@ \advance\skip@-\normalbaselineskip
  \vskip\skip@
}
\def\@makeschapterhead#1{%
  \global\topskip 7.5pc\relax
  \@setcopyright
  \let\copyrightyear\@empty
  \begingroup
  \def\title{}%
  \def\author##1{%
    \if@rhchapsec
    \else \markleft{\MakeUppercase{##1}}%
    \fi
    \vskip1pc\fontsize{\@xiipt}{14}\mdseries\textsc{##1}}%
  \fontsize{\@xivpt}{18}\bfseries\centering
  #1\par \endgroup
  \skip@34\p@ \advance\skip@-\normalbaselineskip
  \vskip\skip@
}
%    \end{macrocode}
%  \end{macro}
%  \end{macro}
%
%  \begin{macro}{@makeruledchapterhead}
%  \begin{macro}{@makeruledschapterhead}
%    GSM and STML require a rule at the top of the page and a smaller
%    rule above the page number at the bottom.  Other specs are
%    publication-specific.
%    \begin{macrocode}
\def\@makeruledchapterhead#1{%
  \global\topskip\normaltopskip
  \begingroup
  \def\author##1{%
    \if@rhchapsec
    \else \markleft{##1}%
    \fi
    \\ \hfil \\ \@chapauthorstyle ##1}%
  \vbox to\topskip{%
    \chapter@number
    \vss
  }\penalty\@M
  \@chapheadstyle \raggedright
  \noindent #1\par \endgroup
  \if@index
    \@indexstyle
  \else
    \@dropfolio
    \@noindexstyle
  \fi
  \@afterheading
}
\def\@makeruledschapterhead#1{%
  \global\topskip\normaltopskip
  \begingroup
  \def\author##1{%
    \if@rhchapsec
    \else \markleft{##1}%
    \fi
    \\ \hfil \\ \@chapauthorstyle ##1}%
  \@chapheadstyle \raggedright
  \noindent #1\par \endgroup
  \if@index
    \@indexstyle
  \else
    \@dropfolio
    \@noindexstyle
  \fi
  \@afterheading
}
%    \end{macrocode}
%  \end{macro}
%  \end{macro}
%
%  \begin{macro}{@makegsmchapterhead}
%    The style for GSM requires a rule at the top of the page, with
%    the chapter title flush left, bold, and the author information
%    below the title also flush left and bold but in a smaller size.
%    \begin{macrocode}
\def\@makegsmchapterhead#1{%
  \def\@chapheadstyle{\Huge\bfseries \hsize24pc
    \top@space{11pc}}%
  \def\@chapauthorstyle{\LARGE\bfseries}%
  \def\@indexstyle{%
    \ifx\@empty\indexintro
      \bb@space{7.5pc}%
    \else
      \vspace{3pc}%
      \begingroup \small
        \parbox[t]{27pc}{\leftskip3pc\normalfont\indexintro\par}%
      \endgroup
      \bb@space{3pc}%
    \fi
    }%
  \def\@noindexstyle{\bb@space{7.5pc}}%
  \if@schapter
    \@makeruledschapterhead{#1}%
  \else
    \@makeruledchapterhead{#1}%
  \fi
}
%    \end{macrocode}
%  \end{macro}
%
%  \begin{macro}{@makestmlchapterhead}
%    The style for STML is similar to that for GSM, except for the
%    smaller page size and the author information set in lightface
%    in the LARGE size.
%    \begin{macrocode}
\def\@makestmlchapterhead#1{%
  \def\@chapheadstyle{\fontsize\@xxpt{22}\selectfont\bfseries\hsize 21pc
    \top@par@space{9pc}}%
  \def\@chapauthorstyle{\LARGE\mdseries}%
  \def\@indexstyle{%
    \ifx\@empty\indexintro
      \bb@par@space{6.5pc}%
    \else
      \vspace{2.5pc}%
      \begingroup \small
        \parbox[t]{22.5pc}{\leftskip2.5pc\normalfont\indexintro\par}%
      \endgroup
      \bb@par@space{2.5pc}%
    \fi
    }%
  \def\@noindexstyle{\bb@par@space{6.5pc}}%
  \if@schapter
    \@makeruledschapterhead{#1}%
  \else
    \@makeruledchapterhead{#1}%
  \fi
}
%    \end{macrocode}
%  \end{macro}
%
%  \subsection{Running heads}
%
%  \begin{macro}{chapterrunhead}
%    Unless overridden by the \opt{[]} option, omit chapter numbers
%    from the right-hand running head with chapter title.  (Explicit
%    line breaks with \verb|\\| are converted to spaces.)
%    \begin{macrocode}
\if@rhchapnum
\else
  \def\chapterrunhead#1#2#3{%
    \def\@tempa{#3}%
    \begingroup \def\\{ \ignorespaces}%
      \uppercasenonmath\@tempa\@tempa
    \endgroup
  }
\fi
%    \end{macrocode}
%  \end{macro}
%
%  \subsection{Part headings}
%
%  \begin{macro}{@plainpart}
%    The ``plain'' part head style is used for nearly all AMS
%    monograph series.  The title is set in the usual style, with
%    the author name centered below in italic.
%    \begin{macrocode}
\def\partauthor{%
  \def\author##1{\newline\phantom{Part 1.\enspace}{\mdseries\scshape##1}}}
\def\@part[#1]#2{%
  \ifnum \c@secnumdepth >-2\relax \refstepcounter{part}%
    \addcontentsline{toc}{part}{\partname\ \thepart.%
        \protect\partauthor\protect\enspace\protect\noindent#1}%
  \else
    \addcontentsline{toc}{part}{#1}\fi
  \begingroup
  \def\author##1{\\ \hfil \\ \fontsize{\@xivpt}{20}\mdseries\itshape ##1}%
  \centering
  \ifnum \c@secnumdepth >-2\relax
     {\fontsize{\@xviipt}{22}\bfseries
       \partname\ \thepart} \vskip 20\p@ \fi
  \fontsize{\@xxpt}{25}\bfseries
    #1\vfil\vfil\endgroup \newpage\thispagestyle{empty}}
\def\@spart#1{\addcontentsline{toc}{part}%
  {\protect\partauthor\protect\noindent#1}%
  \begingroup
  \def\author##1{\\ \hfil \\ \fontsize{\@xivpt}{20}\mdseries\itshape ##1}%
  \centering
  \fontsize{\@xxpt}{25}\bfseries
    #1\vfil\vfil\endgroup \newpage\thispagestyle{empty}}
%    \end{macrocode}
%  \end{macro}
%
%  \subsection{Table of Contents}
%
%    Allow more space for the page number than provided in \cls{amsbook};
%    that is only 1.6em, and results in unpleasantly long text.
%    \begin{macrocode}
\setbox\z@\hbox{\kern1.5pc 999}
\renewcommand{\@pnumwidth}{\wd\z@}
%    \end{macrocode}
%
%  \begin{macro}{@tocline}
%    Replace the \cs{@tocline} command to include the \cn{author}
%    information.  This will be set in small caps on the line following
%    the chapter title, with the same indentation as the title.
%    \begin{macrocode}
\def\@tocline#1#2#3#4#5#6#7{\relax
  \ifnum #1>\c@tocdepth % then omit
  \else
    \def\author##1{\newline\textsc{##1}}%
    \par \addpenalty\@secpenalty\addvspace{#2}%
    \begingroup \hyphenpenalty\@M
    \@ifempty{#4}{%
      \@tempdima\csname r@tocindent\number#1\endcsname\relax
    }{%
      \@tempdima#4\relax
    }%
    \parindent\z@ \leftskip#3\relax \advance\leftskip\@tempdima\relax
    \rightskip\@pnumwidth plus.2\hsize \parfillskip-\@pnumwidth
    #5\leavevmode\hskip-\@tempdima #6\nobreak\relax
    \hfil\hbox to\@pnumwidth{\@tocpagenum{#7}}\par
    \nobreak
    \endgroup
  \fi
}
%    \end{macrocode}
%  \end{macro}
%
%  \subsection{Other features}
%
%  \subsubsection{Copyright notice}
%    A copyright notice is sometimes wanted on separately authored
%    chapters of a ``composite'' monograph or volume of collected works.
%    Provide the ability to add this feature if required, using the
%    same command, \cn{copyrightinfo}, used for journal and proceedings
%    articles.  \cn{copyrightinfo} is present in \cls{amsbook}, so it
%    suffices to set an appropriate default to suppress it unless it
%    is requested explicitly.
%    \begin{macrocode}
\let\copyrightyear\@empty
%    \end{macrocode}
%
%    For now, don't allow a copyright notice for GSM or STML or other
%    books with a similar design.  The need is unlikely, but the more
%    important reason is that the style needs rethinking if such a
%    notice is to be included.
%    \begin{macrocode}
\if@ruledchapterhead \def\copyrightinfo#1#2{}\fi
%    \end{macrocode}
%
%  \begin{macro}{barefootnote}
%  \subsubsection{``Bare'' footnotes}
%    Unnumbered footnotes (such as those that appear on the first page
%    of a journal or proceedings article) are needed to provide information
%    regarding earlier publication and the like.
%    \begin{macrocode}
\newcommand{\barefootnote}[1]{{%
  \let\@makefnmark\relax \let\@thefnmark\relax
  \@footnotetext{#1}}}
%    \end{macrocode}
%  \end{macro}
%
%  \begin{macro}{inchapterbibliography}
%    \subsubsection{Chapter-specific bibliography}
%    Separately authored chapters often have individual bibliographies,
%    which should be presented as sections, not chapters.  For now,
%    disable the mark for the section header (copying the code from
%    the initial value in \cls{amsbook}); it should not appear as
%    the right-hand running head if the author/chapter title headers
%    are in effect.  Still to be determined is whether the section title
%    ``Bibliography'' should appear in the running head if no author is
%    specified and the ``standard'' running heads are used.
%    \begin{macrocode}
\newenvironment{inchapterbibliography}[1]{%
  \let\sectionmark\@gobble
  \@xp\section\@xp*\@xp{\bibname}%
  \normalfont\footnotesize\labelsep .5em\relax
  \renewcommand\theenumiv{\arabic{enumiv}}\let\p@enumiv\@empty
  \list{\@biblabel{\theenumiv}}{\settowidth\labelwidth{\@biblabel{#1}}%
    \leftmargin\labelwidth \advance\leftmargin\labelsep
    \usecounter{enumiv}}%
  \sloppy \clubpenalty\@M \widowpenalty\clubpenalty
  \sfcode`\.=\@m
}{%
  \def\@noitemerr{\@latex@warning{Empty `inchapterbibliography' environment}}%
  \endlist
}
%    \end{macrocode}
%  \end{macro}
%
%  \subsection{Boilerplate}
%
%    The usual \cs{endinput} to ensure that random garbage at the end of
%    the file doesn't get copied by \fn{docstrip}.
%    \begin{macrocode}
\endinput
%    \end{macrocode}
%
% \CheckSum{566}
% \Finale