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zephyr-env.sh: Fixed sourcing the project environment file

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In zsh the value of $0 depends on the FUNCTION_ARGZERO option
which is set by default. FUNCTION_ARGZERO, when it is set, sets
$0 temporarily to the name of the function/script when executing
a shell function or sourcing a script. POSIX_ARGZERO option,
when it is set, exposes the original value of $0 in spite of the
current FUNCTION_ARGZERO setting.

This patch allows to source the project environment file from
both zsh and bash. It also removes the -z option from the
basename command which is missing in OS X.

Change-Id: I5a32404784d9064bf749fa58b4d73d4b56c908c2
Signed-off-by: Yannis Damigos <giannis.damigos@gmail.com>
This commit is contained in:
Yannis Damigos 2016-03-01 12:31:29 +02:00 • committed by Gerrit Code Review
commit 3e3e297719
1 changed files with 18 additions and 1 deletions
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19
zephyr-env.sh
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@ -14,7 +14,24 @@
# limitations under the License.
#
if [ "X$(basename -z -- "$0")" "==" "Xzephyr-env.sh" ]; then
# In zsh the value of $0 depends on the FUNCTION_ARGZERO option which is
# set by default. FUNCTION_ARGZERO, when it is set, sets $0 temporarily
# to the name of the function/script when executing a shell function or
# sourcing a script. POSIX_ARGZERO option, when it is set, exposes the
# original value of $0 in spite of the current FUNCTION_ARGZERO setting.
if [ -n "$ZSH_VERSION" ]; then
if [ $options[posixargzero] != "on" ]; then
setopt posixargzero
NAME=$(basename -- "$0")
setopt posixargzero
else
NAME=$(basename -- "$0")
fi
else
NAME=$(basename -- "$0")
fi
if [ "X$NAME" "==" "Xzephyr-env.sh" ]; then
echo "Source this file (do NOT execute it!) to set the Zephyr Kernel environment."
exit
fi