tools/srepl

   1 #!/bin/sh
   2
   3 #
   4 # Copyright (c) 2019 Jiří Zárevúcky
   5 # All rights reserved.
   6 #
   7 # Redistribution and use in source and binary forms, with or without
   8 # modification, are permitted provided that the following conditions
   9 # are met:
  10 #
  11 # - Redistributions of source code must retain the above copyright
  12 #   notice, this list of conditions and the following disclaimer.
  13 # - Redistributions in binary form must reproduce the above copyright
  14 #   notice, this list of conditions and the following disclaimer in the
  15 #   documentation and/or other materials provided with the distribution.
  16 # - The name of the author may not be used to endorse or promote products
  17 #   derived from this software without specific prior written permission.
  18 #
  19 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29 #
  30
  31 usage()
  32 {
  33         echo "Usage:"
  34         echo
  35         echo "  $0 search_pattern [-- <pathspec> ]"
  36         echo "  $0 search_pattern replacement [-- <pathspec> ]"
  37         echo
  38         echo "Pattern should be a basic regexp as accepted by grep and sed."
  39         echo "For information on pathspec syntax, see git documentation."
  40         echo
  41         exit 1
  42 }
  43
  44 check_unstaged()
  45 {
  46         if ( git status --porcelain | grep '^.[^ ]' ); then
  47                 echo "You have unstaged changes in your tree."
  48                 echo "Either stage them with 'git add', commit them,"
  49                 echo "or discard them with 'git checkout -- .'"
  50                 exit 1
  51         fi
  52 }
  53
  54 _slashify()
  55 {
  56         # Some shells have shoddy handling of backslashes in echo.
  57         printf '%s\n' "$1" | sed 's/\([^\\]\)\//\1\\\//g'
  58 }
  59
  60 if [ "$1" = "--" ]; then
  61         usage
  62 elif [ "$1" = "-d" ]; then
  63         check_unstaged
  64
  65         pattern=`_slashify "$2"`
  66         shift
  67         shift
  68         git grep -I -l "$pattern" "$@" | xargs sed -i "/$pattern/d"
  69
  70 elif [ "$#" -eq 1 ]  || [ "$2" = "--" ]; then
  71         pattern=`_slashify "$1"`
  72         shift
  73         git grep -I -n "$pattern" "$@"
  74 elif [ "$#" -eq 2 ] || [ "$3" = "--" ]; then
  75         check_unstaged
  76
  77         pattern=`_slashify "$1"`
  78         replacement=`_slashify "$2"`
  79         shift
  80         shift
  81         git grep -I -l "$pattern" "$@" | xargs sed -i "s/$pattern/$replacement/g"
  82 else
  83         usage
  84 fi