dev-support/smart-apply-patch.sh

   1 #!/usr/bin/env bash
   2 # Licensed to the Apache Software Foundation (ASF) under one
   3 # or more contributor license agreements.  See the NOTICE file
   4 # distributed with this work for additional information
   5 # regarding copyright ownership.  The ASF licenses this file
   6 # to you under the Apache License, Version 2.0 (the
   7 # "License"); you may not use this file except in compliance
   8 # with the License.  You may obtain a copy of the License at
   9 #
  10 #   http://www.apache.org/licenses/LICENSE-2.0
  11 #
  12 # Unless required by applicable law or agreed to in writing,
  13 # software distributed under the License is distributed on an
  14 # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  15 # KIND, either express or implied.  See the License for the
  16 # specific language governing permissions and limitations
  17 # under the License.
  18
  19 set -e
  20
  21 PATCH_FILE=$1
  22 if [ -z "$PATCH_FILE" ]; then
  23   echo usage: $0 patch-file
  24   exit 1
  25 fi
  26
  27 PATCH=${PATCH:-patch} # allow overriding patch binary
  28
  29 # Cleanup handler for temporary files
  30 TOCLEAN=""
  31 cleanup() {
  32   rm $TOCLEAN
  33   exit $1
  34 }
  35 trap "cleanup 1" HUP INT QUIT TERM
  36
  37 # Allow passing "-" for stdin patches
  38 if [ "$PATCH_FILE" == "-" ]; then
  39   PATCH_FILE=/tmp/tmp.in.$$
  40   cat /dev/fd/0 > $PATCH_FILE
  41   TOCLEAN="$TOCLEAN $PATCH_FILE"
  42 fi
  43
  44 # Come up with a list of changed files into $TMP
  45 TMP=/tmp/tmp.paths.$$
  46 TOCLEAN="$TOCLEAN $TMP"
  47
  48 if $PATCH -p0 -E --dry-run < $PATCH_FILE 2>&1 > $TMP; then
  49   PLEVEL=0
  50   #if the patch applied at P0 there is the possability that all we are doing
  51   # is adding new files and they would apply anywhere. So try to guess the
  52   # correct place to put those files.
  53
  54 #  NOTE 2014/07/17:
  55 #  Temporarily disabling below check since our jenkins boxes seems to be not defaulting to bash
  56 #  causing below checks to fail. Once it is fixed, we can revert the commit and enable this again.
  57
  58 #  TMP2=/tmp/tmp.paths.2.$$
  59 #  TOCLEAN="$TOCLEAN $TMP2"
  60 #
  61 #  grep '^patching file ' $TMP | awk '{print $3}' | grep -v /dev/null | sort | uniq > $TMP2
  62 #
  63 #  #first off check that all of the files do not exist
  64 #  FOUND_ANY=0
  65 #  for CHECK_FILE in $(cat $TMP2)
  66 #  do
  67 #    if [[ -f $CHECK_FILE ]]; then
  68 #      FOUND_ANY=1
  69 #    fi
  70 #  done
  71 #
  72 #  if [[ "$FOUND_ANY" = "0" ]]; then
  73 #    #all of the files are new files so we have to guess where the correct place to put it is.
  74 #
  75 #    # if all of the lines start with a/ or b/, then this is a git patch that
  76 #    # was generated without --no-prefix
  77 #    if ! grep -qv '^a/\|^b/' $TMP2 ; then
  78 #      echo Looks like this is a git patch. Stripping a/ and b/ prefixes
  79 #      echo and incrementing PLEVEL
  80 #      PLEVEL=$[$PLEVEL + 1]
  81 #      sed -i -e 's,^[ab]/,,' $TMP2
  82 #    fi
  83 #  fi
  84 elif $PATCH -p1 -E --dry-run < $PATCH_FILE 2>&1 > /dev/null; then
  85   PLEVEL=1
  86 elif $PATCH -p2 -E --dry-run < $PATCH_FILE 2>&1 > /dev/null; then
  87   PLEVEL=2
  88 else
  89   echo "The patch does not appear to apply with p0 to p2";
  90   cleanup 1;
  91 fi
  92
  93 echo Going to apply patch with: $PATCH -p$PLEVEL
  94 $PATCH -p$PLEVEL -E < $PATCH_FILE
  95
  96 cleanup $?