test-lib: parse options in a for loop to keep $@ intact

diff --git a/t/perf/run b/t/perf/run
index 213da5d6b9437b7db7f3e5b824afea1df465d934..9aaa733c770fb97157e273b6c6d1efd38f9a630a 100755 (executable)
--- a/t/perf/run
+++ b/t/perf/run
@@ -1,21 +1,34 @@
 #!/bin/sh
 
-case "$1" in
+die () {
+       echo >&2 "error: $*"
+       exit 1
+}
+
+while [ $# -gt 0 ]; do
+       arg="$1"
+       case "$arg" in
+       --)
+               break ;;
        --help)
-               echo "usage: $0 [--config file] [other_git_tree...] [--] [test_scripts]"
-               exit 0
-               ;;
+               echo "usage: $0 [--config file] [--subsection subsec] [other_git_tree...] [--] [test_scripts]"
+               exit 0 ;;
        --config)
                shift
                GIT_PERF_CONFIG_FILE=$(cd "$(dirname "$1")"; pwd)/$(basename "$1")
                export GIT_PERF_CONFIG_FILE
                shift ;;
-esac
-
-die () {
-       echo >&2 "error: $*"
-       exit 1
-}
+       --subsection)
+               shift
+               GIT_PERF_SUBSECTION="$1"
+               export GIT_PERF_SUBSECTION
+               shift ;;
+       --*)
+               die "unrecognised option: '$arg'" ;;
+       *)
+               break ;;
+       esac
+done
 
 run_one_dir () {
        if test $# -eq 0; then
@@ -172,9 +185,32 @@ get_subsections "perf" >test-results/run_subsections.names
 
 if test $(wc -l <test-results/run_subsections.names) -eq 0
 then
+       if test -n "$GIT_PERF_SUBSECTION"
+       then
+               if test -n "$GIT_PERF_CONFIG_FILE"
+               then
+                       die "no subsections are defined in config file '$GIT_PERF_CONFIG_FILE'"
+               else
+                       die "subsection '$GIT_PERF_SUBSECTION' defined without a config file"
+               fi
+       fi
        (
                run_subsection "$@"
        )
+elif test -n "$GIT_PERF_SUBSECTION"
+then
+       egrep "^$GIT_PERF_SUBSECTION\$" test-results/run_subsections.names >/dev/null ||
+               die "subsection '$GIT_PERF_SUBSECTION' not found in '$GIT_PERF_CONFIG_FILE'"
+
+       egrep "^$GIT_PERF_SUBSECTION\$" test-results/run_subsections.names | while read -r subsec
+       do
+               (
+                       GIT_PERF_SUBSECTION="$subsec"
+                       export GIT_PERF_SUBSECTION
+                       echo "======== Run for subsection '$GIT_PERF_SUBSECTION' ========"
+                       run_subsection "$@"
+               )
+       done
 else
        while read -r subsec
        do