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%
% verbfwr.sty -- LaTeX package that writes verbatim to a file
% by pts@fazekas.hu at Sat Sep 27 23:40:12 CEST 2003
%
% Code partially ripped from sverb.sty
% Dat: space tokens at EOL are ignored by TeX's eyes
%
% Dat: changed \@tempa to \VerbFwrLines, so we have:
% ! File ended while scanning use of \VerbFwrLines.
% !! use latex.ltx \begin{filecontents}
%
% Dat: callbacks are: (see below)
% \verbfwr@actemitlineone
% \verbfwr@actemitline
% \verbfwr@actemitdone
%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{verbfwr}[2003/09/25 v0.02 Verbatim file write]
\newif\ifverbfwr@matched
\def\verbfwr@matcher#1#2#3{%
\expandafter\def\csname\string#1$after\endcsname##1#2\relax{%
\def\verbfwr@@terminator{#2}% `\end{foo}' with \string
\def\verbfwr@@after{##1}}%
\expandafter\def\csname\string#1$match\endcsname##1#2##2##3\end{%
\ifx##2\relax\verbfwr@matchedfalse
\else\verbfwr@matchedtrue\csname\string#1$after\endcsname##2##3\fi
#3{##1}%
}%
\expandafter\def\expandafter#1\expandafter##\expandafter1\expandafter{%
\csname\string#1$match\endcsname##1#2\relax\end%
}%
}
\begingroup
\catcode\string`\%=12
\gdef\verbfwr@percent#1#2\relax
{\ifx\check@percent\@@undefined
\ifx#1\relax\def\VerbFwrLines{}\else
\def\VerbFwrLines{#1#2}\fi\else
\ifx#1\relax\def\VerbFwrLines{}\else
\ifx#1%\def\VerbFwrLines{#2}\else
\def\VerbFwrLines{#1#2}\fi\fi\fi}
\endgroup
\begingroup
\lccode\string`\~32
\lowercase{\endgroup
\def\verbfwr@isspaces#1{%
\ifx#1\relax \def\@tempb{\@tempswafalse}%
\else\ifx#1~\let\@tempb\verbfwr@isspaces%
\else\def\@tempb##1\relax{}%
\fi\fi%
\@tempb%
}
\def\verbfwr@safespc{\catcode32 13 \def~{ }}
}
\def\verbfwr@default@acts{%
%** Callback called before each line. Should call
%** `\let\verbfwr@actemitlineone\@empty' to prevent subsequent callbacks.
\gdef\verbfwr@actemitlineone{%
%\hrule
\let\verbfwr@actemitlineone\@empty
}%
%** Callback called after the last line (even if \verbfwr@actemitlineone
%** isn't \@empty). This can detect the presence of lines by checking
%** \ifx\verbfwr@actemitlineone\@empty .
\let\verbfwr@actemitdone\@empty
%** Called fore each line, with macro \VerbFwrLines containing the line itself
%** @param #1 \cs process-line-proc
\def\verbfwr@actemitline##1{%
\begingroup
\expandafter##1\expandafter{\VerbFwrLines}%
\endgroup
}%
}
\verbfwr@default@acts
%** Dat: discards spaces at EOL (but not at BOL if BOL!=EOL)
%** @param #1 end-text
%** @param #2 \cs process-line-proc
%** @param #3 \cs end-proc
\def\verbfwr@read#1#2#3{%
\begingroup%
\verbfwr@matcher\verbfwr@match{#1}\verbfwr@read@ii%
\@tempswafalse
\catcode13 13 \catcode32 13
\lccode\string`\~13\lowercase{%
\def\verbfwr@read@i##1~{\verbfwr@match{##1}}%
}%
\def\verbfwr@read@ii##1{%
% Dat: The TeXbook, page 46 says that characters with code 32 are removed
% from the end of the lines. This is independent of \catcode32
%%\def\VerbFwrLines{##1}\show\VerbFwrLines
\verbfwr@percent##1\relax\relax%
\ifverbfwr@matched\@tempswafalse\fi%
% vvv Dat: ignore the very first line (with \begin{VerbWrite}), entirely
% made of spaces -- will never occur, because
% trailing spaces have already been trimmed
\if@tempswa\else\@tempswatrue\expandafter\verbfwr@isspaces\VerbFwrLines\relax\fi%
\if@tempswa
\verbfwr@actemitlineone
\verbfwr@actemitline{#2}%
\fi%
\@tempswatrue
\ifverbfwr@matched
\ifx\verbfwr@@after\@empty\else
\PackageWarning{verbfwr}{Text right from \verbfwr@@terminator\space was ignored}%
\fi
%\def\reserved@a{##1}%
\def\VerbFwrLines{%\ifx\verbfwr@actemitlineone\@empty\verbfwr@actemitdone\fi
\verbfwr@actemitdone \endgroup#3}%
\else\let\VerbFwrLines\verbfwr@read@i\fi%
\VerbFwrLines
}%
\verbfwr@read@i
}
\begingroup
\lccode\string`\<=\string`\{ \lccode\string`\>=\string`\} \lccode\string`\|=\string`\\
\lowercase{\endgroup
%** @example \verbfwr@readenv\verbfwr@read
\def\verbfwr@readenv#1{%
\expandafter\expandafter\expandafter%
#1\expandafter\verbfwr@readenv@i\@currenvir\hfuzz}
\def\verbfwr@readenv@i#1\hfuzz{{|end<#1>}{\end{#1}}}
%** @param #1 stop line
%** @param #2 code to call at stop
\def\verbfwr@readenv@ii#1\hfuzz#2{{|end<#1>}{#2}}
}
%** @param #1<-\end{VerbWrite} (with full catcode 12)
%** @param #2<-\end {VerbWrite} (with various catcodes for \, e, { and }
\def\verbfwr@write#1#2{%
\begingroup%
\@savsf1000 \@savsk\z@skip% in case \verbfwr@actemitlineone initiates horizontal mode
\@bsphack% Dat: too early to say \@bsphack here, because
\let\do\@makeother\dospecials% \catcode`\\=12 etc. (see latex.ltx for \dospecials)
\@tempcnta127
\loop\ifnum\@tempcnta<256 \catcode\@tempcnta12 \advance\@tempcnta\@ne\repeat
\catcode9=12 % tab: \t, will be emitted as ^^I to the file (force this!)
% Dat: eempost.sty has to be updated (?! not sure)
%\catcode\string`\^13 % allow ^^e1 hex...
\verbfwr@safespc% each space counts when reading (similar to \obeyspaces)
\verbfwr@read{#1}\verbfwr@actwriteline{\@esphack\endgroup#2}%
}
%** \let\verbfwr@actwriteline\verbfwr@writeline
\def\verbfwr@writeline#1{%
%%\showthe\catcode92 \toks0{#1} \showthe\toks0
\immediate\write\verbfwr@writecs{#1}%
}
\newwrite\verbfwr@writefile
%** Usage: \begin{VerbWrite}{filename.ext}...\end{VerbWrite}. File will end with \n. The
%** line contents after \end{verbwrite} are ignored.
\def\VerbWrite#1{%
\immediate\openout\verbfwr@writefile#1\relax%
\let\verbfwr@writecs\verbfwr@writefile
\let\verbfwr@actwriteline\verbfwr@writeline
\verbfwr@readenv\verbfwr@write
% \foo\bar % would write also this!
}
\def\endVerbWrite{\immediate\closeout\verbfwr@writefile}
%\expandafter\def\csname verbwrite*\endcsname#1#2{%
% \immediate\openout\verbfwr@writefile#2\relax%
% \let\verbfwr@writecs\verbfwr@writefile
% \verbfwr@write{#1}{\immediate\closeout\verbfwr@writefile\end{verbwrite*}}%
%}
\begingroup\catcode\string`\^^M=3 % math shift. Weird enough.
% ^^^ Dat: Each line following the prev. catcode def. must end with `%'
% otherwise we get `! Missing $ inserted' for
% \begin{PSource}[srcstyle=leftleft]
% a&b
% \end{PSource}
\gdef\verbfwr@noter@endtest#1#2#3#4#5#6^^M{%%
\edef\reserved@a{\string#1}%%
\def\reserved@b{#1#2#3#4{#5}}%%
}%%
\gdef\verbfwr@noter@eachline#1^^M{%%
\expandafter\verbfwr@noter@endtest\string#1[][][]^^M% set \reserved@a and \reserved@b
%%\show\reserved@b%
\if\string^^M\reserved@a%%
% If we are here then our line, #1 begins with ^^M (with a \catcode
% different from 3, which we've set above). This means that somebody
% (our caller) has inserted a ^^M before we've been able to change
% \catcodes. The typical example is \@ifnextchar, looking for a `[', but
% finding only ^^M. That ^^M would have whatever catcode. Another typical
% example is \verbfwr@noter@read0, whose ^^M we should ignore immediately
% Our strategy is to ignore that extra ^^M.
\expandafter\expandafter\expandafter\verbfwr@noter@endtest%%
\expandafter\string\@gobble#1[][][]^^M%%
% ^^^ this sets \reserved@b, so we can properly end the environment here
\let\reserved@a\@gobble%%
\else%%
\let\reserved@a\@empty%%
\fi%%
\ifx\reserved@b\verbfwr@@noter@end%%
%\ifx\verbfwr@actemitlineone\@empty\verbfwr@actemitdone\fi%
\verbfwr@actemitdone%% BUGFIX: added `%' to this line at Fri Nov 12 00:03:26 CET 2004
\endgroup%% &agroup;
\expandafter\end\expandafter{\@currenvir}%%
\else%%
\verbfwr@actemitlineone%%
\expandafter\def\expandafter\VerbFwrLines\expandafter{\reserved@a#1}%%
\verbfwr@actemitline{}%%
\expandafter\verbfwr@noter@eachline%%
\fi%%
}%%
\endgroup% \catcode
%** by pts@fazekas.hu at Sun Dec 7 20:41:22 CET 2003
%** Similar to \verbfwr@readenv\verbfwr@write (which doesn't write anything
%** to a file if all \verbfwr@actemit.. callbacks are redefined), but always
%** stops reading at end of \@currenvir (and doesn't gobble the rest of the
%** line) provided that it is at BOL (/^\s*/). Calls the usual callbacks
%** \verbfwr@actemitlineone, \verbfwr@actemitlineone and
%** \verbfwr@actemitline. Works with normal \catcodes, only the \catcode of
%** ^^M is changed.
%** @param #1 0|1. Insert an empty line if \begin{...} is followed by ^^M?
%** Dat: discards spaces at BOL and EOL
%** Dat: doesn't discard empty lines
%** Dat: accepts \end{...} marker only at BOL (/^\s*/)
\def\verbfwr@noter@read#1{%
\begingroup% &agroup;
\edef\verbfwr@@noter@end{\string\end{\@currenvir}}%
\if1\noexpand#1%
\expandafter\verbfwr@noter@ignore@start% remember ^^M just after \begin{foo}
\else
\obeylines% \catcode\string`^^M=13
\expandafter\expandafter\expandafter\verbfwr@noter@ignore@start
\expandafter\noexpand% trick to ignore ^^M after \begin{foo}
\fi
}
\def\verbfwr@noter@ignore@start{%
\catcode\string`\^^M=3
\verbfwr@noter@eachline%
}
%** \begin{WFile}{filename}contents^^J\end{WFile}
\def\WFile#1{%
\immediate\openout\verbfwr@writefile#1\relax
\let\verbfwr@writecs\verbfwr@writefile
\let\verbfwr@actwriteline\verbfwr@writeline
\verbfwr@default@acts
\verbfwr@readenv\verbfwr@write}% finish this \cs here
\def\endWFile{\immediate\closeout\verbfwr@writefile}
%** Writes directly to the aux file
\def\WAux{%
\let\verbfwr@writecs\@auxout
\let\verbfwr@actwriteline\verbfwr@writeline
\verbfwr@default@acts
\verbfwr@readenv\verbfwr@write}% finish this \cs here
\def\endWAux{}%
\endinput%% End of verbfwr.sty
|
