Accessing array elements with spaces in TCSH

Question

I'm trying to create a small little convenience script for our team. Unfortunately, our entire build environment is based on tcsh for historical reasons. In the following script, each element of BUILD_MATRIX is a : delimited pair. I need to separate out each part of this pair for processing, but the array malfunctions for some reason.

#!/bin/tcsh

set BUILD_MATRIX = ( "makefile.make:make --jobs --makefile=makefile.make" \
                     "Makefile:make --jobs --makefile=Makefile" \
                     "build.xml:ant" )

foreach pair ( ${BUILD_MATRIX} )
  echo "pair: ${pair}"
end

gives

pair: makefile.make:make
pair: --jobs
pair: --makefile=makefile.make
pair: Makefile:make
pair: --jobs
pair: --makefile=Makefile
pair: build.xml:ant

As you can see, the array is split on spaces -- completely reasonable, but not what is desired. How can I get pair=makefile.make:make --jobs --makefile=makefile.make?

possible duplicate of Csh adding strings to an array, whitespace troubles — Etan Reisner
– Etan Reisner, Commented Dec 4, 2014 at 19:56
@EtanReisner Didn't see that question, but thanks for the link. I don't think it's quite a duplicate -- these are two different questions (albeit with similar underlying principles), so there are two different goals and two different answers. I'll try to adapt the answer given there again to this application. — Sean Allred
– Sean Allred, Commented Dec 4, 2014 at 19:59
The answer there specifically covers the foreach case too. — Etan Reisner
– Etan Reisner, Commented Dec 4, 2014 at 19:59
@EtanReisner Whoops - my fault. I was using the brace syntax: ${array}:q does not work. I'll add that as a comment and my answer as another option. This should be closed as a dupe. Thanks :) — Sean Allred
– Sean Allred, Commented Dec 4, 2014 at 20:04

Sean Allred · Accepted Answer · 2014-12-04 20:17:48Z

1

Using the linked duplicate, I was able to find a complete answer:

foreach pair ( $BUILD_MATRIX:q )
  set candidate = `echo $pair | sed 's/\([^:]*\):\(.*\)/\1/'`
  set command   = `echo $pair | sed 's/\([^:]*\):\(.*\)/\2/'`
  echo "pair: ${pair}"
  echo "candidate: ${candidate}"
  echo "command: ${command}"
end

edited Dec 4, 2014 at 20:17

answered Dec 4, 2014 at 19:57

Sean Allred

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