contrib/dockerrpm

color: support a different color mode when the pager is active

MSYS on Windows has a terminal that supports the "win32" color mode
(which "auto" properly detects for us). However, a popularily configured
pager in that environment (GNU less) only supports the "ansi" color
mode.

This patch teaches color about a new config option: pagermode. It
behaves like "mode" but is only consulted when the pager is active for
the current command. MSYS users can now set "pagermode = ansi" and get a
colorful experience that just works. Previously, MSYS users would have
to live without color when using GNU less as the pager, would have to
manually configure the pager to attend every command, or would have
gibberish if "ansi" was used without the pager.

#!/bin/bash -e

BUILDDIR=$(dirname $0)
ROOTDIR=$(cd $BUILDDIR/..; pwd)

if which docker.io >> /dev/null 2>&1 ; then
  DOCKER=docker.io
elif which docker >> /dev/null 2>&1 ; then
  DOCKER=docker
else
  echo "Error: docker must be installed"
  exit 1
fi

$DOCKER -h 2> /dev/null | grep -q Jansens && { echo "Error: $DOCKER is the Docking System Tray - install docker.io instead"; exit 1; }
$DOCKER version | grep -q "^Client version:" || { echo "Error: unexpected output from \"$DOCKER version\""; exit 1; }
$DOCKER version | grep -q "^Server version:" || { echo "Error: could not get docker server version - check it is running and your permissions"; exit 1; }

PLATFORM="$1"
[ "$PLATFORM" ] || { echo "Error: platform name must be specified"; exit 1; }
shift # extra params are passed to buildrpm

DFILE="$ROOTDIR/contrib/docker/$PLATFORM"
[ -f "$DFILE" ] || { echo "Error: docker file $DFILE not found"; exit 1; }

CONTAINER="hg-dockerrpm-$PLATFORM"

DBUILDUSER=build
(
cat $DFILE
echo RUN groupadd $DBUILDUSER -g `id -g`
echo RUN useradd $DBUILDUSER -u `id -u` -g $DBUILDUSER
) | $DOCKER build --tag $CONTAINER -

RPMBUILDDIR=$ROOTDIR/packages/$PLATFORM
contrib/buildrpm --rpmbuilddir $RPMBUILDDIR --prepare $*

DSHARED=/mnt/shared
$DOCKER run -u $DBUILDUSER --rm -v $RPMBUILDDIR:$DSHARED $CONTAINER \
    rpmbuild --define "_topdir $DSHARED" -ba $DSHARED/SPECS/mercurial.spec --clean

$DOCKER run -u $DBUILDUSER --rm -v $RPMBUILDDIR:$DSHARED $CONTAINER \
    createrepo $DSHARED

cat << EOF > $RPMBUILDDIR/mercurial.repo
# Place this file in /etc/yum.repos.d/mercurial.repo
[mercurial]
name=Mercurial packages for $PLATFORM
# baseurl=file://$RPMBUILDDIR/
baseurl=http://hg.example.com/build/$PLATFORM/
skip_if_unavailable=True
gpgcheck=0
enabled=1
EOF

echo
echo "Build complete - results can be found in $RPMBUILDDIR"