On Mon, 28 May 2007, Matthias Weber wrote:
> is there a simple TeX/ConTeXt way to test in a TeX file whether a
> link to an external document is broken
> so that I get an error message if not?
Quick and dirty:
\def\UseURL[#1][#2]{%
\executesystemcommand{%
if wget -qO/dev/null #2 \letterbar\letterbar [ -f #2 ]; then
echo \letterbackslash\letterbackslash useURL[#1][#2];
else
echo \letterbackslash\letterbackslash#1DoesNotExist;
fi >texcmd.tmp}%
\input texcmd.tmp}
\setupcolors[state=start]
\setupinteraction[state=start]
\UseURL[fileOk][/tmp/real-file]
\UseURL[fileNotOk][/tmp/not-existing-file]
\UseURL[urlOk][http://contextgarden.net/]
\UseURL[urlNotOk][http://no.contextgarden.net/]
\starttext
existing file: \from[fileOk]
not existing file: \from[fileNotOk]
existing url: \from[urlOk]
not existing url: \from[urlNotOk]
\stoptext
Cheers, Peter
--
http://pmrb.free.fr/contact/
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