tools/patch

   1 #!/bin/bash
   2 # Script that automatically applies patches.
   3
   4 paths=
   5 patches=
   6
   7 while [ $# -gt 0 ]; do
   8         case "${1}" in
   9                 --search-path=*)
  10                         paths="${paths} ${1#--search-path=}"
  11                         ;;
  12                 *)
  13                         patches="${patches} ${1}"
  14                         ;;
  15         esac
  16         shift
  17 done
  18
  19 if [ -n "${patches}" ]; then
  20         echo "Applying patches..."
  21 fi
  22
  23 # Apply all patches given on command line.
  24 for patch in ${patches}; do
  25         case "${patch}" in
  26                 /*)
  27                         ;;
  28                 *)
  29                         for path in ${paths}; do
  30                                 if [ -e "${path}/${patch}" ]; then
  31                                         patch="${path}/${patch}"
  32                                         break
  33                                 fi
  34                         done
  35                         ;;
  36         esac
  37
  38         # Check if patch file does exist.
  39         if ! [ -e "${patch}" ]; then
  40                 echo >&2 "  ERROR: Patch file does not exist: ${patch}"
  41                 exit 1
  42         fi
  43
  44         # Options applied to patch command.
  45         options="-N"
  46
  47         # Get right -p1 option.
  48         case "${patch}" in
  49                 *.patch[0-9])
  50                         # Get patch level from file name.
  51                         level=${patch:$(( ${#patch} - 1))}
  52                         options="${options} -p${level}"
  53                         ;;
  54                 *.patch|*.diff)
  55                         # Default is -p1.
  56                         options="${options} -p1"
  57                         ;;
  58                 *)
  59                         echo >&2 "   WARNING: Ignoring unknown file: ${patch}"
  60                         continue
  61                         ;;
  62         esac
  63
  64         echo "  Applying ${patch} (${options})..."
  65         patch ${options} -i ${patch} || exit $?
  66 done
  67
  68 exit 0