perf/run: add '--config' option to the 'run' script

It is error prone and tiring to use many long environment
variables to give parameters to the 'run' script.

Let's make it easy to store some parameters in a config
file and to pass them to the run script.

The GIT_PERF_CONFIG_FILE variable will be set to the
argument of the '--config' option. This variable is not
used yet. It will be used in a following commit.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/perf/run b/t/perf/run
index beb4acc0e428d20280a649c428da8b0b3aa5b4c6..1e7c2a59e45dcfbd8f84fb7e29cf8b0448aa73d2 100755 (executable)
--- a/t/perf/run
+++ b/t/perf/run
@@ -2,9 +2,14 @@
 
 case "$1" in
        --help)
-               echo "usage: $0 [other_git_tree...] [--] [test_scripts]"
+               echo "usage: $0 [--config file] [other_git_tree...] [--] [test_scripts]"
                exit 0
                ;;
+       --config)
+               shift
+               GIT_PERF_CONFIG_FILE=$(cd "$(dirname "$1")"; pwd)/$(basename "$1")
+               export GIT_PERF_CONFIG_FILE
+               shift ;;
 esac
 
 die () {