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#!/bin/bash -eu

#

# Script to reproduce a test failure from a dejagnu .log file.

#

# Contributed by Diego Novillo 

#

# Copyright (C) 2011 Free Software Foundation, Inc.

#

# This file is part of GCC.

#

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

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 3, or (at your option)

# any later version.

#

# GCC 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 for more details.

#

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

# along with GCC; see the file COPYING.  If not, write to

# the Free Software Foundation, 51 Franklin Street, Fifth Floor,

# Boston, MA 02110-1301, USA.

# This script will search a line starting with 'spawn' that includes the

# pattern you are looking for (typically a source file name).

#

# Once it finds that pattern, it re-executes the whole command

# in the spawn line.  If the pattern matches more than one spawn

# command, it asks which one you want.

if [ $# -lt 2 ] ; then

    echo "usage: $0 [--debug|--debug-tui] pattern file.log [additional-args]"

    echo

    echo "Finds the 'spawn' line matching PATTERN in FILE.LOG and executes"

    echo "the command with any arguments in ADDITIONAL-ARGS."

    echo

    echo "If --debug is used, the compiler is invoked with -wrapper gdb,--args"

    echo "If --debug-tui is used, the compiler is invoked with -wrapper "\

         "gdb,--tui,--args"

    exit 1

fi

if [ "$1" == "--debug" ] ; then

    debug_args="-wrapper gdb,--args"

    shift

elif [ "$1" == "--debug-tui" ] ; then

    debug_args="-wrapper gdb,--tui,--args"

    shift

else

    debug_args=""

fi

pattern="$1"

logf="$2"

shift 2

# Find the commands in LOGF that reference PATTERN.

lines=$(grep -E "^spawn .*$pattern" $logf | sed -e 's/^spawn //')

if [ -z "$lines" ] ; then

    echo "Could not find a spawn command for pattern $pattern"

    exit 1

fi

# Collect all the command lines into the COMMANDS array.

old_IFS="$IFS"

IFS="
"

num_lines=0

for line in $lines ; do

    num_lines=$[$num_lines + 1]

    echo "[$num_lines] $line"

    commands[$num_lines]=$line

done

cmds_to_run='0'

if [ $num_lines -gt 1 ] ; then

    echo

    echo

    echo -n "Enter the list of commands to run or '0' to run them all: "

    read cmds_to_run

fi

if [ "$cmds_to_run" = "0" ] ; then

    cmds_to_run=$(seq 1 $num_lines)

fi

IFS="$old_IFS"

for cmd_num in $cmds_to_run ; do

    cmd=${commands[$cmd_num]}

    set -x +e

    $cmd $debug_args "$@"

    set +x -e

done