bin/foamCleanPath

   1 #!/bin/sh
   2 #------------------------------------------------------------------------------
   3 # =========                 |
   4 # \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   5 #  \\    /   O peration     |
   6 #   \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
   7 #    \\/     M anipulation  |
   8 #-------------------------------------------------------------------------------
   9 # License
  10 #     This file is part of OpenFOAM.
  11 #
  12 #     OpenFOAM is free software; you can redistribute it and/or modify it
  13 #     under the terms of the GNU General Public License as published by the
  14 #     Free Software Foundation; either version 2 of the License, or (at your
  15 #     option) any later version.
  16 #
  17 #     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
  18 #     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  19 #     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  20 #     for more details.
  21 #
  22 #     You should have received a copy of the GNU General Public License
  23 #     along with OpenFOAM; if not, write to the Free Software Foundation,
  24 #     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  25 #
  26 # Script
  27 #     foamCleanPath
  28 #
  29 # Description
  30 #     Usage: foamCleanPath [-strip] path [wildcard] .. [wildcard]
  31 #
  32 #     Prints its argument (which should be a ':' separated path)
  33 #     without all
  34 #         - duplicate elements
  35 #         - (if '-strip') non-accessible directories
  36 #         - elements whose start matches a wildcard
  37 #
  38 #     Note:
  39 #         - this routine will fail when directories have embedded spaces
  40 #         - false matches possible if a wildcard contains '.' (sed regex)
  41 #------------------------------------------------------------------------------
  42 if [ "$#" -lt 1 -o "$1" = "-h" -o "$1" = "-help" ]
  43 then
  44    cat <<USAGE 1>&2
  45 Usage: ${0##*/} [-strip] path [wildcard] .. [wildcard]
  46
  47     Prints its argument (which should be a ':' separated list) cleansed from
  48       - duplicate elements
  49       - elements whose start matches one of the wildcard(s)
  50       - (if '-strip') non-accessible directories
  51 USAGE
  52    exit 1
  53 fi
  54
  55
  56 strip=''
  57 if [ "$1" = "-strip" ]
  58 then
  59     strip=true
  60     shift
  61 fi
  62
  63
  64 dirList="$1"
  65 shift
  66
  67 ##DEBUG echo "input>$dirList<" 1>&2
  68
  69 # preserve current IFS and split on whitespace
  70 oldIFS="$IFS"
  71 IFS=' '
  72
  73 # "wildcard1 ... wildcardN" may have been passed as a single parameter
  74 set -- $*
  75
  76 # strip out wildcards via sed
  77 while [ "$#" -ge 1 ]
  78 do
  79     wildcard=$1
  80     shift
  81     ##DEBUG echo "remove>$wildcard<" 1>&2
  82     dirList=`echo "$dirList" | sed -e "s@${wildcard}[^:]*:@@g"`
  83 done
  84
  85 # split on ':' (and on space as well to avoid any surprises)
  86 IFS=': '
  87 set -- $dirList
  88
  89 ##DEBUG echo "intermediate>$dirList<" 1>&2
  90
  91 # rebuild the list from scratch
  92 unset dirList
  93 for dir
  94 do
  95     ##DEBUG echo "check>$dir<" 1>&2
  96     #- dirs must exist
  97     if [ -e "$dir" ]
  98     then
  99         #- no duplicate dirs
 100         duplicate=`echo " $dirList " | sed -ne "s@ $dir @DUP@p"`
 101
 102         if [ ! "$duplicate" ]
 103         then
 104             dirList="$dirList $dir"
 105         fi
 106     elif [ "$strip" != "true" ]
 107     then
 108         # Print non-existing directories if not in 'strip' mode.
 109         dirList="$dirList $dir"
 110     fi
 111 done
 112
 113 # parse on whitespace
 114 IFS=' '
 115 set -- $dirList
 116
 117 # join on ':'
 118 IFS=':'
 119 dirList="$*"
 120
 121 # restore IFS
 122 IFS="$oldIFS"
 123
 124 ##DEBUG echo "output>$dirList<" 1>&2
 125 echo "$dirList"
 126
 127 # -----------------------------------------------------------------------------