rpms/kernel/devel gen-patches,NONE,1.1

[Roland McGrath (roland)]

Author: roland

Update of /cvs/pkgs/rpms/kernel/devel
In directory cvs-int.fedora.redhat.com:/tmp/cvs-serv2526

Added Files:
	gen-patches 
Log Message:
This script goes with the Makefile hacks for git/branch builds.



--- NEW FILE gen-patches ---
#!/bin/sh
#
# This script goes with the Makefile hacks for git/branch builds.
#

nopatches=1
if [ "x$1" = "x--fedora" ]; then
  nopatches=0
  shift
  patchcomment="plus Fedora patches"
else
  patchcomment="no Fedora patches"
fi

name=
if [ "x$1" = "x--name" ]; then
  shift
  name="$1"
  shift
fi

if [ $# -lt 2 ]; then
  echo >&2 "Usage: GIT_DIR=REPO $0 [--fedora] [--name NAME]\
 TARBALL-TAG [PATCH-TAG...] BRANCH..."
  exit 2
fi

base=$1
shift
base_rev=`git-rev-parse "$base"` || exit

nextpatch=1
usepatch()
{
  patches[$nextpatch]=$1
  nextpatch=$(($nextpatch + 1))
}

lasturl=:
loglines="- Experimental build from git sources ($patchcomment)\\
"
log()
{
  local logrev=$1
  local logbranch=$3
  case $logbranch in
  refs/remotes/*)
    logbranch=${logbranch#refs/remotes/}
    local remote=${logbranch%%/*}
    logbranch=${logbranch#*/}
    logbranch=${logbranch//\//-}
    local url
    url=`git-config "remote.${remote}.url"` || {
      echo >&2 "Cannot find URL for remote $remote"
      exit 2
    }
    if [ "$url" != "$lasturl" ]; then
      lasturl="$url"
      loglines="${loglines}- $url\\
"
    fi
    logtext="$(printf %12s "remote: ")$logbranch"
    ;;
  *)
    lasturl=:
    logtext="$(printf %-12s "git $2:")$logbranch"
    ;;
  esac
  loglines="${loglines}- $(printf %-35s "$logtext") ${logrev}\\
"
}

patch_headers()
{
  p=1
  while [ $p -lt $nextpatch ]; do
    echo "Patch$p: ${patches[$p]}\\"
    p=$(($p + 1))
  done
}

patch_apply()
{
  p=1
  while [ $p -lt $nextpatch ]; do
#    echo "%patch$p -p1\\"
    echo "ApplyPatch ${patches[$p]}\\"
    p=$(($p + 1))
  done
}

base_rev()
{
  local base=$1
  if [ -r "$GIT_DIR/refs/tags/$base" ]; then
    tag_rev=`git-rev-parse $base` || {
      echo >&2 "Cannot find tag $base"
      exit 2
    }
    return 0
  fi
  case "$1" in
  v*-git*)
    local id=patch-${1#v}.id
    if [ ! -r $id ]; then
      make download UPSTREAM_FILES=$id UPSTREAM_CHECKS=-- > /dev/null 2>&1
    fi
    [ -r $id ] && tag_rev=`cat $id` && return 0
    ;;
  esac
  return 1
}

log $base_rev base $base
while base_rev $1; do
  base=$1
  base_rev=$tag_rev
  shift
  usepatch patch-${base#v}.bz2
  log $tag_rev tag $base
done
version=${base#v}

now="`date +'%Y-%m-%d %H:%M %Z'`"

for branch; do

  merge_base=`git-merge-base $base_rev $branch` || {
    echo >&2 "No common ancestor for $base and $branch"
    exit 2
  }
  branch_rev=`git-rev-parse $branch`

  case "$branch" in
  refs/remotes/*/master)
    branch_name=${branch#refs/remotes/}
    branch_name=${branch_name%/master}
    ;;
  refs/remotes/*)
    branch_name=${branch#refs/remotes/}
    branch_name=${branch_name//\//-}
    ;;
  */*)
    branch_name=${branch_name//\//-}
    ;;
  *)
    branch_name=$branch
    ;;
  esac

  file=linux-${version}-${branch_name}.patch
  git diff --no-renames -p \
	   -r "${merge_base}" -r "${branch_rev}" > $file || exit
  if [ ! -s $file ]; then
    rm -f $file
    continue
  fi

  usepatch $file
  log $branch_rev branch $branch

  base="$branch"
  base_rev="$base"
done
name=`echo ${name:-${branch}} | sed s/-/_/g`

#upstream_branch=`date -u -d "$now" +${branch}.%Y%m%dT%H%M | sed s/-/_/g`
upstream_branch=$name
branch_rev=`git describe $base_rev | sed 's/-g[0-9a-f]*$//;s/-/./g;s/^v//'`

logdate=`date -d "$now" +'%a %b %d %Y'`

sed "/%define nopatches/c\\
%define nopatches ${nopatches}\\
%define upstream_branch ${name}\\
%define upstream_branch_release ${branch_rev}
/^### BRANCH PATCH/a\\
`patch_headers`
###
/^### BRANCH APPLY/a\\
`patch_apply`
###
/^%changelog/a\\
* ${logdate} ${GIT_AUTHOR_NAME} <${GIT_AUTHOR_EMAIL}>\\
$loglines

"