release.sh

   1 #!/bin/sh
   2 #
   3 # Prepares a release:
   4 #   - Bumps version according to specified level (major, minor, or patch)
   5 #   - Updates all necessary headers with new version
   6 #   - Commits the changes
   7 #   - Tags the release
   8 #   - Creates a release tarball
   9
  10 PROJECT=xombrero
  11 PROJECT_UC=$(echo $PROJECT | tr '[:lower:]' '[:upper:]')
  12 SCRIPT=$(basename $0)
  13 HEADER=version.h
  14
  15 # verify params
  16 if [ $# -lt 1 ]; then
  17         echo "usage: $SCRIPT {major | minor | patch}"
  18         exit 1
  19 fi
  20
  21 report_err()
  22 {
  23         echo "$SCRIPT: error: $1" 1>&2
  24         exit 1
  25 }
  26
  27
  28 cd "$(dirname $0)"
  29
  30 # verify header exists
  31 if [ ! -f "$HEADER" ]; then
  32         report_err "$HEADER does not exist"
  33 fi
  34
  35 # verify valid release type
  36 RTYPE="$1"
  37 if [ "$RTYPE" != "major" -a "$RTYPE" != "minor" -a "$RTYPE" != "patch" ]; then
  38         report_err "release type must be major, minor, or patch"
  39 fi
  40
  41 # verify git is available
  42 if ! type git >/dev/null 2>&1; then
  43         report_err "unable to find 'git' in the system path"
  44 fi
  45
  46 # verify the git repository is on the master branch
  47 BRANCH=$(git -c color.ui=no branch | grep '\*' | cut -c3-)
  48 if [ "$BRANCH" != "master" ]; then
  49         report_err "git repository must be on the master branch"
  50 fi
  51
  52 # verify there are no uncommitted modifications prior to release modifications
  53 NUM_MODIFIED=$(git diff 2>/dev/null | wc -l | sed 's/^[ \t]*//')
  54 NUM_STAGED=$(git diff --cached 2>/dev/null | wc -l | sed 's/^[ \t]*//')
  55 if [ "$NUM_MODIFIED" != "0" -o "$NUM_STAGED" != "0" ]; then
  56         report_err "the working directory contains uncommitted modifications"
  57 fi
  58
  59 # get version
  60 PAT_PREFIX="(^#define[[:space:]]+${PROJECT_UC}"
  61 PAT_SUFFIX='[[:space:]]+)[0-9]+$'
  62 MAJOR=$(egrep "${PAT_PREFIX}_MAJOR${PAT_SUFFIX}" $HEADER | awk '{print $3}')
  63 MINOR=$(egrep "${PAT_PREFIX}_MINOR${PAT_SUFFIX}" $HEADER | awk '{print $3}')
  64 PATCH=$(egrep "${PAT_PREFIX}_PATCH${PAT_SUFFIX}" $HEADER | awk '{print $3}')
  65 if [ -z "$MAJOR" -o -z "$MINOR" -o -z "$PATCH" ]; then
  66         report_err "unable to get version from $HEADER"
  67 fi
  68
  69 # bump version according to level
  70 if [ "$RTYPE" = "major" ]; then
  71         MAJOR=$(expr $MAJOR + 1)
  72         MINOR=0
  73         PATCH=0
  74 elif [ "$RTYPE" = "minor" ]; then
  75         MINOR=$(expr $MINOR + 1)
  76         PATCH=0
  77 elif [ "$RTYPE" = "patch" ]; then
  78         PATCH=$(expr $PATCH + 1)
  79 fi
  80 PROJ_VER="$MAJOR.$MINOR.$PATCH"
  81
  82 # update header with new version
  83 sed -E "
  84     s/${PAT_PREFIX}_MAJOR${PAT_SUFFIX}/\1${MAJOR}/;
  85     s/${PAT_PREFIX}_MINOR${PAT_SUFFIX}/\1${MINOR}/;
  86     s/${PAT_PREFIX}_PATCH${PAT_SUFFIX}/\1${PATCH}/;
  87 " <"$HEADER" >"${HEADER}.tmp"
  88
  89 # apply changes
  90 mv "${HEADER}.tmp" "$HEADER"
  91
  92 # commit and tag
  93 TAG="${PROJECT_UC}_${MAJOR}_${MINOR}_${PATCH}"
  94 git commit -am "Prepare for release ${PROJ_VER}." ||
  95     report_err "unable to commit changes"
  96 git tag -s -u release@conformal.com "$TAG" -m "Release ${PROJ_VER}" || report_err "unable to create tag"
  97
  98 # create temp working space and copy repo over
  99 TD=$(mktemp -d /tmp/release.XXXXXXXXXX)
 100 if [ ! -d "$TD" ]; then
 101         report_err "unable to create temp directory"
 102 fi
 103 RELEASE_DIR="$PROJECT-$PROJ_VER"
 104 RELEASE_TAR="$PROJECT-$PROJ_VER.tgz"
 105 git clone . "$TD/$RELEASE_DIR" ||
 106     report_err "unable to copy to $TD/$RELEASE_DIR"
 107
 108 # cleanup repository files
 109 cd "$TD"
 110 if [ -d "$RELEASE_DIR" -a -d "$RELEASE_DIR/.git" ]; then
 111         rm -rf "$RELEASE_DIR/.git"
 112 fi
 113 if [ -d "$RELEASE_DIR" -a -f "$RELEASE_DIR/.gitignore" ]; then
 114         rm -f "$RELEASE_DIR/.gitignore"
 115 fi
 116
 117 # make snap
 118 tar -zcf "$RELEASE_TAR" "$RELEASE_DIR" ||
 119     report_err "unable to create $RELEASE_TAR"
 120
 121
 122 echo "Release tarball:"
 123 echo "  $TD/$RELEASE_TAR"
 124 echo ""
 125 echo "If everything is accurate, use the following command to push the changes:"
 126 echo "  git push --tags origin master"