#!/bin/bash

#

# Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.

#

# This code is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

# Usage: sh shell-tracer.sh <TIME_CMD> <OUTPUT_FILE> <OLD_SHELL> <shell command line>

#

# This shell script is supposed to be set as a replacement for SHELL in make,

# causing it to be called whenever make wants to execute shell commands.

# The <shell command line> is suitable for passing on to the old shell, 

# typically beginning with -c.

#

# This script will make sure the shell command line is executed with 

# OLD_SHELL -x, and it will also store a simple log of the the time it takes to

# execute the command in the OUTPUT_FILE, using the "time" utility as pointed 

# to by TIME_CMD. If TIME_CMD is "-", no timestamp will be stored.

TIME_CMD="$1"

OUTPUT_FILE="$2"

OLD_SHELL="$3"

shift

shift

shift

if [ "$TIME_CMD" != "-" ]; then

"$TIME_CMD" -f "[TIME:%E] $*" -a -o "$OUTPUT_FILE" "$OLD_SHELL" -x "$@"

else

"$OLD_SHELL" -x "$@"

fi