bin/foamCleanPath

   1 #!/bin/sh
   2 #------------------------------------------------------------------------------
   3 # =========                 |
   4 # \\      /  F ield         | foam-extend: Open Source CFD
   5 #  \\    /   O peration     | Version:     4.0
   6 #   \\  /    A nd           | Web:         http://www.foam-extend.org
   7 #    \\/     M anipulation  | For copyright notice see file Copyright
   8 #------------------------------------------------------------------------------
   9 # License
  10 #     This file is part of foam-extend.
  11 #
  12 #     foam-extend 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 3 of the License, or (at your
  15 #     option) any later version.
  16 #
  17 #     foam-extend is distributed in the hope that it will be useful, but
  18 #     WITHOUT ANY WARRANTY; without even the implied warranty of
  19 #     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20 #     General Public License for more details.
  21 #
  22 #     You should have received a copy of the GNU General Public License
  23 #     along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.
  24 #
  25 # Script
  26 #     foamCleanPath
  27 #
  28 # Description
  29 #     Usage: foamCleanPath [-strip] path [wildcard] .. [wildcard]
  30 #
  31 #     Prints its argument (which should be a ':' separated path)
  32 #     without all
  33 #         - duplicate elements
  34 #         - (if '-strip') non-accessible directories
  35 #         - elements whose start matches a wildcard
  36 #
  37 #     Note:
  38 #         - this routine will fail when directories have embedded spaces
  39 #         - false matches possible if a wildcard contains '.' (sed regex)
  40 #------------------------------------------------------------------------------
  41 if [ "$#" -lt 1 -o "$1" = "-h" -o "$1" = "-help" ]
  42 then
  43    cat <<USAGE 1>&2
  44 Usage: ${0##*/} [-strip] path [wildcard] .. [wildcard]
  45
  46     Prints its argument (which should be a ':' separated list) cleansed from
  47       - duplicate elements
  48       - elements whose start matches one of the wildcard(s)
  49       - (if '-strip') non-accessible directories
  50 USAGE
  51    exit 1
  52 fi
  53
  54
  55 strip=''
  56 if [ "$1" = "-strip" ]
  57 then
  58     strip=true
  59     shift
  60 fi
  61
  62
  63 dirList="$1"
  64 shift
  65
  66 ##DEBUG echo "input>$dirList<" 1>&2
  67
  68 # preserve current IFS and split on whitespace
  69 oldIFS="$IFS"
  70 IFS=' '
  71
  72 # "wildcard1 ... wildcardN" may have been passed as a single parameter
  73 set -- $*
  74
  75 # strip out wildcards via sed
  76 while [ "$#" -ge 1 ]
  77 do
  78     wildcard=$1
  79     shift
  80     ##DEBUG echo "remove>$wildcard<" 1>&2
  81     dirList=`echo "$dirList" | sed -e "s@${wildcard}[^:]*:@@g"`
  82 done
  83
  84 # split on ':' (and on space as well to avoid any surprises)
  85 IFS=': '
  86 set -- $dirList
  87
  88 ##DEBUG echo "intermediate>$dirList<" 1>&2
  89
  90 # rebuild the list from scratch
  91 unset dirList
  92 for dir
  93 do
  94     ##DEBUG echo "check>$dir<" 1>&2
  95     #- dirs must exist
  96     if [ -e "$dir" ]
  97     then
  98         #- no duplicate dirs
  99         duplicate=`echo " $dirList " | sed -ne "s@ $dir @DUP@p"`
 100
 101         if [ ! "$duplicate" ]
 102         then
 103             dirList="$dirList $dir"
 104         fi
 105     elif [ "$strip" != "true" ]
 106     then
 107         # Print non-existing directories if not in 'strip' mode.
 108         dirList="$dirList $dir"
 109     fi
 110 done
 111
 112 # parse on whitespace
 113 IFS=' '
 114 set -- $dirList
 115
 116 # join on ':'
 117 IFS=':'
 118 dirList="$*"
 119
 120 # restore IFS
 121 IFS="$oldIFS"
 122
 123 ##DEBUG echo "output>$dirList<" 1>&2
 124 echo "$dirList"
 125
 126 # -----------------------------------------------------------------------------