Mark on document where input starts and what is the filename

Question

I have a master document, and use many input{...} commands to compile the total document from many parts.

I would like to mark on the working document, the start of each new input, and, what the filename was at that point.

I could renew the \input{..} command, but I do not want the mark to disrupt what would otherwise be the standard ouput, ie, the mark should be an underlay / watermark.

Is there a package that does this, I am thinking something similar to what the showkeys package does.

I had the following in mind, to create a label whenever input is used, relying on showkeys do do the underlying marking on the document, but it isn't working:

\let\oldinput\input
\newcounter{inputcounter}\setcounter{inputcounter}{0}
\renewcommand{\input}[1]{%
    \stepcounter{inputcounter}%
    \label{inp:\theinputcounter:#1}%
    \oldinput{#1}%
}

More than likely tikz code for images, and, source code for listings, but also, chapters, sections, subsections, so, basically everything. — Nicholas Hamilton, May 22 '13 at 05:00
It works fine for me when you use your redefinition of \input. What do you mean by "it isn't working"? — Werner, May 22 '13 at 05:16
throws an error from pgfrcs.sty, file 'p.tex' not found, looking at pgfrcs.sty, it has: \input pgfutil-common.tex and \input pgfutil-latex.def so I dont know what is going on. — Nicholas Hamilton, May 22 '13 at 05:18
LaTeX's \input is set up to allow both plain TeX and LaTeX-like syntaxes. You probably want to redefine \@iinput, which is used internally with the LaTeX-like version. — Joseph Wright, May 22 '13 at 06:01
@Joseph Genius. That worked. Cheers. If you want to post an answer, ill tick it off. — Nicholas Hamilton, May 22 '13 at 06:07

score 4 · Accepted Answer · answered May 22 '13 at 07:23

The LaTeX definition of \input is designed to allow both the standard LaTeX braced-argument syntax

\input{filename}

and the original primitive syntax

\input filename % Space-terminated

However, you've redefined it such that it will only work with the LaTeX syntax. If you take a peek at the definition of \input, you'll find that the LaTeX syntax branch is handled by \@iinput. So that's the place to make a change

\makeatletter
\newcounter{inputcounter}
\let\old@iinput\@iinput
\renewcommand{\@iinput}[1]{%
    \stepcounter{inputcounter}%
    \label{inp:\theinputcounter:#1}%
    \old@iinput{#1}%
}
\makeatother

This assumes that you don't want to track use of the primitive syntax use, which is probably being used only by cross-format packages like pgf.

What would be the best way to place a horizontal rule (dashed) the width of the page, at the label location, without shifting any of the subsequent content down in any way, ie, non-disruptive? — Nicholas Hamilton, May 22 '13 at 20:11

Mark on document where input starts and what is the filename

1 Answers1

Linked