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+% \iffalse
+%%
+%% File: nccrules.dtx Copyright (C) 2005 by Alexander I. Rozhenko
+%%
+%<package>\NeedsTeXFormat{LaTeX2e}
+%<package>\ProvidesPackage{nccrules}
+%<package>      [2005/05/13 v1.0 More rules (NCC)]
+%
+% \changes{v1.0}{2005/05/13}{This version was uploaded to CTAN}
+%
+%<*driver>
+\documentclass{ltxdoc}
+\usepackage{nccrules}
+\newfootnoterule{starred}{\mboxfill[1.5\width][s]{$*$}}
+\newfootnoterule{dotted}{\mboxfill[2\width][s]{.}}
+\newfootnotedashrule{double}{}{.4 1 .4}
+\newfootnotedashrule{dashed}{3 3}{.4}
+\newfootnotedashrule{dotdashed}{4 2 1 2 4 -4}{.6}
+\newfootnotedashrule{ddotdashed}{6 2 1 2 1 2 6 -6}{.6}
+\GetFileInfo{nccrules.sty}
+\begin{document}
+\title{The \textsf{nccrules} package\thanks{This file
+        has version number \fileversion, last
+        revised \filedate.}}
+\author{Alexander I. Rozhenko\\rozhenko@oapmg.sscc.ru}
+\date{\filedate}
+\maketitle
+\DocInput{nccrules.dtx}
+\end{document}
+%</driver>
+% \fi
+% This package implements
+% |\dashrule| and |\dashrulefill| commands,
+% that simplify composing of dashed
+% lines and dashed multilines. Two kinds of footnote rule generation
+% commands are also introduced: |\newfootnoterule| creates a footnote
+% rule with an arbitrary contents and |\newfootnotedashrule| creates
+% a footnote rule based on dash rule.
+%
+% \section{User Interface}
+%
+% \subsection{Dash Rules}
+%
+% \DescribeMacro\dashrule
+% The command
+% \begin{quote}
+% |\dashrule|\oarg{raise}\marg{h-pattern}\marg{v-pattern}
+% \end{quote}
+% prepares a dash rule. Its syntax is quite similar to the |\rule| command
+% except that \meta{h-pattern} and \meta{v-pattern} can contain a list of
+% sizes delimited with spaces. List sizes are interpreted as follows:
+% size, space, size, space, etc. In other words, every odd size is a
+% size of rule part and every even size is a space between neighbour parts.
+% If the last size in the list is even
+% (means a space), its space value is divided by two and
+% is added before the first rule part and after the last rule part.
+% Units in sizes can be omitted. In this case, pt-units are supposed.
+% Examples:
+% \begin{center}
+% \begin{tabular}{@{}l@{\qquad\qquad}l@{}}
+% x\dashrule[.5ex]{10mm}{1pt}x &
+% |x\dashrule[.5ex]{10mm}{1pt}x| \\
+% x\dashrule{5mm 3 3 3 5mm}{.4}x &
+% |x\dashrule{5mm 3 3 3 5mm}{.4}x| \\
+% x\dashrule{1}{3 2 3}x&
+% |x\dashrule{1}{3 2 3}x|\\
+% x\dashrule{2 2}{2 2}x &
+% |x\dashrule{2 2}{2 2}x|\\
+% x\dashrule{5 3 1 3 5 10}{1 1 0.4 1 1}x &
+% |x\dashrule{5 3 1 3 5 10}{1 1 0.4 1 1}x|
+% \end{tabular}
+% \end{center}
+%
+% \DescribeMacro\dashrulefill
+% The command
+% \begin{quote}
+% |\dashrulefill|\oarg{raise}\oarg{leader-type}\marg{h-pattern}\marg{v-pattern}
+% \end{quote}
+% fills a free space with a dash rule. The rule is composed from the 1st,
+% 3rd, and 4th arguments of the command and is repeated as more times as
+% necessary to fill a free horizontal space. The rest of space after filling is
+% stored depending on \meta{leader-type} used. Default leader type
+% is ``aligned leaders'': every rule is aligned to the multiple of its width
+% counted from the left boundary of filled box. Other cases are: |c| means
+% centered leaders (all extra spaces are collected at both ends of fill
+% area), |x| means distributed leaders (extra spaces are uniformly
+% distributed between every dash rule), and |s| means stretched leaders
+% (the space in h-pattern going after the last rule size is considered as
+% stretchable space and rules are stretched to the whole width of the
+% fill area).
+%
+% Example:
+% \begin{flushleft}
+% |\noindent x\dashrulefill{2 2}{2}\mbox{}\\|\\
+% |xxxxx\dashrulefill[.4ex]{2 2}{2}\mbox{}\\|\\
+% |\mbox{}\dashrulefill[.4ex]{4 4}{2}\mbox{}\\|\\
+% |\mbox{}\dashrulefill[.4ex][c]{4 4}{2}\mbox{}\\|\\
+% |\mbox{}\dashrulefill[.4ex][x]{4 4}{2}\mbox{}\\|\\
+% |\mbox{}\dashrulefill[.4ex][s]{4 4}{2}\mbox{}\\|\\
+% |\mbox{}\dashrulefill[.4ex][s]{4 2 1 2 4 -4}{1}\mbox{}\\[1ex]|\\
+% |\mbox{}\dashrulefill[0mm][c]{2 3}{2 3 2 3 2}\mbox{}\\|\\
+% |\mbox{}\dashrulefill{5 3 1 3 5}{1 1 0.4 1 1}\mbox{}\\|\\
+% |\mbox{}\dashrulefill[0mm][c]{5 3 1 3 5}{1 1 0.4 1 1}\mbox{}\\[-2ex]|\\
+% |\mbox{}\hrulefill|
+% \end{flushleft}
+%
+% It produces the following:
+%
+% \noindent x\dashrulefill{2 2}{2}\mbox{}\\
+% xxxxx\dashrulefill[.4ex]{2 2}{2}\mbox{}\\
+% \mbox{}\dashrulefill[.4ex]{4 4}{2}\mbox{}\\
+% \mbox{}\dashrulefill[.4ex][c]{4 4}{2}\mbox{}\\
+% \mbox{}\dashrulefill[.4ex][x]{4 4}{2}\mbox{}\\
+% \mbox{}\dashrulefill[.4ex][s]{4 4}{2}\mbox{}\\
+% \mbox{}\dashrulefill[.4ex][s]{4 2 1 2 4 -4}{1}\mbox{}\\[1ex]
+% \mbox{}\dashrulefill[0mm][c]{2 3}{2 3 2 3 2}\mbox{}\\
+% \mbox{}\dashrulefill{5 3 1 3 5}{1 1 0.4 1 1}\mbox{}\\
+% \mbox{}\dashrulefill[0mm][c]{5 3 1 3 5}{1 1 0.4 1 1}\mbox{}\\[-2ex]
+% \mbox{}\hrulefill
+%
+% \subsection{Custom Footnote Rules}
+%
+% In |manyfoot| package, you can separate footnote levels
+% with custom footnote rules. In this package we provide two ways for
+% creation such rules. All footnote rules should follow the following
+% contract: they must be prepared as |\hrule| or |\hbox|; the total height
+% of rule or box must be compensated with kerns. Usually a negative
+% kern is inserted before a footnote rule and a nonnegative kern is
+% inserted after the rule. The sum of both kerns and of total height of
+% rule must be equal to zero. We follow this contract in footnote rules
+% created with this package.
+%
+% In |manyfoot| package, every footnote rule must have a name
+% |\|\meta{prefix}|footnoterule|. So, we need to specify the prefix only
+% when a new footnote rule is constructed. Next that we need to specify is
+% a rule width. If width is omitted, the default width of |0.4\columnwidth|
+% is used. The footnote rule generation commands described below
+% are used in the preamble only.
+%
+% \DescribeMacro\newfootnoterule
+% The command
+% \begin{quote}
+% |\newfootnoterule|\marg{prefix}\oarg{width}\marg{rule code}
+% \end{quote}
+% produces a custom user-defined rule.
+% The \meta{rule code} must be stretchable to the given width.
+% The |\mboxfill| command from the |mboxfill| package is useful in it.
+% Examples:
+% \begin{quote}
+% |\newfootnoterule{starred}{\mboxfill[1.5\width][s]{$*$}}|\\
+% |\newfootnoterule{dotted}{\mboxfill[2\width][s]{.}}|
+% \end{quote}
+% The |\starredfootnoterule| and |\dottedfootnoterule| commands
+% are created here. They produce the following rules:
+%
+% \vspace{3mm}
+% \starredfootnoterule
+% \dottedfootnoterule
+%
+% \DescribeMacro\newfootnotedashrule
+% The command
+% \begin{quote}
+% |\newfootnotedashrule|\marg{prefix}\oarg{width}\marg{h-pattern}\marg{v-pattern}
+% \end{quote}
+% produces a dash footnote rule. The special case, when \meta{h-pattern}
+% is empty means the solid rule. Examples:
+% \begin{quote}
+% |\newfootnotedashrule{double}{}{.4 1 .4}|\\
+% |\newfootnotedashrule{dashed}{3 3}{.4}|\\
+% |\newfootnotedashrule{dotdashed}{4 2 1 2 4 -4}{.6}|\\
+% |\newfootnotedashrule{ddotdashed}{6 2 1 2 1 2 6 -6}{.6}|
+% \end{quote}
+% The following rules are created here:
+% |\doublefootnoterule|, |\dashedfootnoterule|,
+% |\dotdashedfootnoterule|, and |\ddotdashedfootnoterule|.
+% They produce the following rules:
+%
+% \vspace{2mm}%
+% \doublefootnoterule
+% \dashedfootnoterule
+% \dotdashedfootnoterule
+% \ddotdashedfootnoterule
+%
+% \StopEventually{}
+%
+% \section{The Implementation}
+%
+% The |mboxfill| package is required here:
+%    \begin{macrocode}
+%<*package>
+\RequirePackage{mboxfill}
+%    \end{macrocode}
+%
+% \begin{macro}{\dashrule}
+% |\dashrule|\oarg{raise}\marg{h-pattern}\marg{v-pattern}
+%    \begin{macrocode}
+\newcommand\dashrule{}
+\DeclareRobustCommand*\dashrule[3][\z@]{%
+  \setbox\@tempboxa\vbox{}%
+  \NCC@composedash{\NCC@vdash{#2}}{#3}%
+  \setlength\@tempdima{#1}\leavevmode
+  \raise\@tempdima\hbox{%
+    \vbox to\@tempdimc{\vss\unvbox\@tempboxa\vss}}%
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\dashrulefill}
+% |\dashrulefill|\oarg{raise}\oarg{leader-type}\marg{h-pattern}\marg{v-pattern}\\
+% This command is a composition of the |\mboxfill| and
+% |\dashrule| commands. A trick is applied here:
+% we decrease dash rule width on the value of last space
+% in it and then apply |\mboxfill|.
+%    \begin{macrocode}
+\newcommand*\dashrulefill[1][\z@]{%
+  \@ifnextchar[{\NCC@dashfill{#1}}{\NCC@dashfill{#1}[]}%
+}
+\def\NCC@dashfill#1[#2]#3#4{%
+  \NCC@composedash{}{#3}%
+  \advance\@tempdimb-\@tempdimc
+  \setbox\@tempboxa\hb@xt@-\@tempdimb
+    {\hss\dashrule[#1]{#3}{#4}\hss}%
+  \mboxfill[\@tempdimc][#2]{\box\@tempboxa}%
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\NCC@composedash}
+% |\NCC@composedash|\marg{action}\marg{pattern} parses the pattern
+% and calls the action when a rule size is parsed. At this point,
+% the |\@tempdima| contains a size parsed and |\@tempdimb| contains
+% the previous space. In |\@tempdimc|, the whole rule size is calculated.
+%    \begin{macrocode}
+\def\NCC@composedash#1#2{%
+  \@tempdimb\z@ % Last space
+  \@tempdimc\z@ % Accumulator
+  \@tempswatrue % True value means producing an entry
+  \NCC@parsedash#2 ! !\@nil{%
+    \advance\@tempdimc\@tempdima
+    \if@tempswa #1\@tempswafalse \else
+      \@tempdimb\@tempdima \@tempswatrue
+    \fi
+  }%
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\NCC@parsedash}
+% Pattern parser:
+%    \begin{macrocode}
+\def\NCC@parsedash#1 #2\@nil#3{%
+  \if/#1/\else % Empty arg. ignored
+    \ifx#1!\else % Exclamation mark ends the list
+      \@defaultunits\@tempdima#1pt\relax\@nnil
+      #3\NCC@parsedash#2\@nil{#3}%
+    \fi
+  \fi
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\NCC@vdash}
+% |\NCC@vdash|\marg{h-pattern} is
+% applied when a vertical dash is composed.
+% |\@tempdimb| contains the required skip,
+% |\@tempdima| contains the rule height.
+%    \begin{macrocode}
+\def\NCC@vdash#1{%
+  \setbox\@tempboxa\vbox{%
+    \unvbox\@tempboxa \vskip\@tempdimb
+    \setbox\@tempboxa\hbox{}%
+    \@tempskipa\@tempdima % Save rule height in \@tempskipa
+    \NCC@composedash{\NCC@hdash}{#1}%
+    \hb@xt@\@tempdimc{\hss\unhbox\@tempboxa\hss}%
+  }%
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\NCC@hdash}
+% This action is applied when a horizontal dash is composed.
+% |\@tempdimb| contains the required skip,
+% |\@tempdima| contains the rule width,
+% |\@tempskipa| contains the rule height.
+%    \begin{macrocode}
+\def\NCC@hdash{%
+  \setbox\@tempboxa\hbox{%
+    \unhbox\@tempboxa \kern\@tempdimb
+    \vrule \@width\@tempdima \@height\@tempskipa
+  }%
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\NCC@fnoterule}
+% |\NCC@fnoterule|\marg{width}\marg{rule code}\\
+% This is the footnote rule producing command.
+% As usual, two kerns must be inserted surround the rule: a negative
+% kern before the rule and a nonnegative kern after the rule.
+% The sum of kern values and of the total rule height must
+% vanish. Kerns are calculated in such a way to vertically center
+% the rule relative to 2.8pt distance top to the current position.
+% If the total height of rule is greater than 5.6pt, the rule is moved
+% up on the total rule height (the kern after the rule is zero in this case).
+%    \begin{macrocode}
+\def\NCC@fnoterule#1#2{%
+  \setlength\@tempdima{#1}%
+  \setbox\@tempboxa\hb@xt@\@tempdima{#2}%
+  \@tempdima\ht\@tempboxa \advance\@tempdima\dp\@tempboxa
+  \@tempdimb 2.8\p@ \@tempdimc .5\@tempdima
+  \ifdim\@tempdimc>\@tempdimb \@tempdimb\@tempdimc \fi
+  \advance\@tempdimb\@tempdimc
+  \kern-\@tempdimb
+  \box\@tempboxa
+  \advance\@tempdimb -\@tempdima
+  \kern\@tempdimb
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\NCC@fnotedashrule}
+% |\NCC@fnotedashrule|\marg{width}\marg{h-pattern}\marg{v-pattern}\\
+% Produces the rule based on |\dashrulefill|. A special case of empty
+% \meta{h-pattern} means the solid (maybe multi-line) rule.
+%    \begin{macrocode}
+\def\NCC@fnotedashrule#1#2#3{%
+  \NCC@fnoterule{#1}{\def\@tempa{#2}%
+    \ifx\@tempa\@empty
+      \@tempskipb\@tempdima \dashrule{\@tempskipb}{#3}%
+    \else
+      \dashrulefill[\z@][s]{#2}{#3}%
+    \fi
+  }%
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\NCC@fnotecreate}
+% |\NCC@fnotecreate|\marg{prefix}\marg{body}\\
+% Creates a footnote rule whose name is composed from the
+% given \meta{prefix} and |footnoterule|. For example if the prefix
+% is |dashed|, the |\dashedfootnoterule| command will be created.
+%    \begin{macrocode}
+\def\NCC@fnotecreate#1{%
+  \edef\@tempa{\noexpand\newcommand*%
+    \expandafter\noexpand\csname #1footnoterule\endcsname}%
+  \@tempa
+}
+\@onlypreamble\NCC@fnotecreate
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\NCC@fnoteprepare}
+% |\NCC@fnoteprepare|\marg{driver}\marg{prefix}\oarg{width}\\
+% Prepares a footnote rule command. The \meta{driver} is a command
+% that will be called for collecting rule code (it gets more arguments
+% from the input). When a driver prepares the code, it calls the
+% |\NCC@fnotecreate| command. If \meta{width} is omitted, the standard
+% width of |0.4\columnwidth| is used.
+%    \begin{macrocode}
+\def\NCC@fnoteprepare#1#2{%
+  \@ifnextchar[{#1{#2}}{#1{#2}[.4\columnwidth]}%
+}
+\@onlypreamble\NCC@fnoteprepare
+%    \end{macrocode}
+% \end{macro}
+%
+% Footnote rule creation driver has the following syntax:
+% \begin{quote}
+% |\|\meta{driver}\marg{prefix}\oarg{width}\meta{more arguments}
+% \end{quote}
+%
+% \begin{macro}{\newfootnoterule}
+% |\newfootnoterule|\marg{prefix}\oarg{width}\marg{rule code}
+%    \begin{macrocode}
+\newcommand\newfootnoterule{\NCC@fnoteprepare\NCC@fnotedriver}
+\def\NCC@fnotedriver#1[#2]#3{%
+  \NCC@fnotecreate{#1}{\NCC@fnoterule{#2}{#3}}%
+}
+\@onlypreamble\newfootnoterule
+\@onlypreamble\NCC@fnotedriver
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\newfootnotedashrule}
+% |\newfootnotedashrule|\marg{prefix}\oarg{width}\marg{h-pattern}\marg{v-pattern}
+%    \begin{macrocode}
+\newcommand\newfootnotedashrule{\NCC@fnoteprepare\NCC@fnotedashdriver}
+\def\NCC@fnotedashdriver#1[#2]#3#4{%
+  \NCC@fnotecreate{#1}{\NCC@fnotedashrule{#2}{#3}{#4}}%
+}
+\@onlypreamble\newfootnotedashrule
+\@onlypreamble\NCC@fnotedashdriver
+%</package>
+%    \end{macrocode}
+% \end{macro}
+\endinput