Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!sdd.hp.com!uakari.primate.wisc.edu!aplcen!jhunix!barrett
From: barrett@jhunix.HCF.JHU.EDU (Dan Barrett)
Newsgroups: comp.text.tex
Subject: Grabbing substrings?
Keywords: strrchr()
Message-ID: <8487@jhunix.HCF.JHU.EDU>
Date: 28 May 91 20:29:29 GMT
Followup-To: poster
Distribution: usa
Organization: The Johns Hopkins University - HCF
Lines: 27


	I want to write a LaTeX or TeX macro that expands to a substring
of its argument.  For example, a macro \basename{} would take a UNIX
filename as an argument:

		\basename{/usr/local/bin/foobar}

and expand to:

		foobar

Can TeX/LaTeX isolate substrings in a macro argument?  The rule I want to
embody is:

		"If the argument has a '/' character, then expand to
		the string immediately following the last '/'.
		Otherwise, expand to the entire argument."

Please respond by e-mail only  -- thanks!

                                                        Dan

 //////////////////////////////////////\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
| Dan Barrett, Department of Computer Science      Johns Hopkins University |
| INTERNET:   barrett@cs.jhu.edu           |                                |
| COMPUSERVE: >internet:barrett@cs.jhu.edu | UUCP:   barrett@jhunix.UUCP    |
 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\/////////////////////////////////////