##// END OF EJS Templates
rhg: use `Command::exec` instead of `Command::status`...
rhg: use `Command::exec` instead of `Command::status` `rhg` is supposed to be a transparent executable, using a subprocess defeats that purpose. See inline comments for more details. This also introduces the `which` crate to check if the fallback executable actually exists to help debugging (plain `execve` doesn't give much information). The error code 253 is used to signify that the fallback is not found, but may mean in the future that it is otherwise invalid if we start being more specific. Differential Revision: https://phab.mercurial-scm.org/D12578

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packagelib.sh
43 lines | 1.3 KiB | application/x-sh | BashLexer
# Extract version number into 4 parts, some of which may be empty:
#
# version: the numeric part of the most recent tag. Will always look like 1.3.
#
# type: if an rc build, "rc", otherwise empty
#
# distance: the distance from the nearest tag, or empty if built from a tag
#
# node: the node|short hg was built from, or empty if built from a tag
gethgversion() {
if [ -z "${1+x}" ]; then
python="python"
else
python="$1"
fi
export HGRCPATH=
export HGPLAIN=
make cleanbutpackages PYTHON=$python
make local PURE=--pure PYTHON=$python
HG="$PWD/hg"
$python "$HG" version > /dev/null || { echo 'abort: hg version failed!'; exit 1 ; }
hgversion=`LANGUAGE=C $python "$HG" version | sed -ne 's/.*(version \(.*\))$/\1/p'`
if echo $hgversion | grep + > /dev/null 2>&1 ; then
tmp=`echo $hgversion | cut -d+ -f 2`
hgversion=`echo $hgversion | cut -d+ -f 1`
distance=`echo $tmp | cut -d- -f 1`
node=`echo $tmp | cut -d- -f 2`
else
distance=''
node=''
fi
if echo $hgversion | grep -E -- '[0-9]\.[0-9](\.[0-9])?rc' > /dev/null 2>&1; then
version=`echo $hgversion | cut -d'r' -f1`
type="rc`echo $hgversion | cut -d'c' -f2-`"
else
version=$hgversion
type=''
fi
}