#!/bin/sh
#
# Copyright by The HDF Group.
# Copyright by the Board of Trustees of the University of Illinois.
# All rights reserved.
#
# This file is part of HDF5.  The full HDF5 copyright notice, including
# terms governing use, modification, and redistribution, is contained in
# the COPYING file, which can be found at the root of the source code
# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
# If you do not have access to either file, you may request a copy from
# help@hdfgroup.org.
#

# Check that all the files in MANIFEST exist and (if this is a
# GIT checkout) that all the GIT-managed files appear in the
# MANIFEST.
# 

verbose=yes
MANIFEST=/tmp/HD_MANIFEST.$$
AUTOGEN=./autogen.sh
AUTOGEN_LOG=/tmp/autogen.log.$$

# Main
test "$verbose" && echo "   Checking MANIFEST..." 1>&2
# clean up $MANIFEST file when exits
trap "rm -f $MANIFEST" 0

# Only split lines on newline, not whitespace
set -f
IFS='
'

# First make sure i am in the directory in which there is an MANIFEST file
# and then do the checking from there.  Will try the following,
# current directory, parent directory, the directory this command resides.
if [ -f MANIFEST ]; then
    continue
elif [ -f ../MANIFEST ]; then
    cd ..
else
    commanddir=`dirname $0`
    if [ -d "$commanddir" -a -f $commanddir/MANIFEST ]; then
	cd $commanddir
	continue
    else
	echo MANIFEST file not found. Abort.
	exit 1
    fi
fi

# Do an autogen if generated files (e.g., configure) is not present
if [ ! -f configure ]; then
    echo "   running $AUTOGEN"
    $AUTOGEN > $AUTOGEN_LOG 2>&1
    if [ $? -ne 0 ]; then
	echo $AUTOGEN encountered error. Abort.
	echo output from $AUTOGEN:
	cat $AUTOGEN_LOG
	exit 1
    fi
    rm $AUTOGEN_LOG
fi

# Check for duplicate entries.  This can be done at any time, but it may as 
# well be sooner so that if something else fails the presence of duplicates
# will already be known.
errcode=0
DUPLICATES=`perl -ne 's/#.*//; next if /^\s*$/; if ($uniq{$_}++) { print $_; }' MANIFEST`
if [ "$DUPLICATES" ]; then
   cat 1>&2 <<EOF
These entries appear more than once in the MANIFEST:  
$DUPLICATES
Please remove the duplicate lines and try again.

EOF
errcode=1 
fi

# Copy the manifest file to get a list of file names.
grep '^\.' MANIFEST | expand | cut -f1 -d' ' >$MANIFEST

for file in `cat $MANIFEST`; do
    if [ ! -f $file ]; then
       echo "- $file"
       fail=yes
    fi
done

# Get the list of files under version control and check that they are
# present.
#
# First get a list of all the pending files with git status and
# check those.
git_stat=`git status -s`
for file in $git_stat; do

    # Newly added files are not listed by git ls-files, which
    # we check later.

    # The line listing new files starts with 'A'.
    letter=`echo $file | head -c 1`
    if [ "$letter" = "A" ]; then
        # Convert the git status columns to './' so it matches
        # the manifest file name.
        #
        # There is a space between the status columns and file name, hence
        # the '3'.
        path=`echo $file | sed 's/^.\{3\}/\.\//g'`
        # Ignore directories
        if [ ! -d $path ]; then
            if (grep ^$path$ $MANIFEST >/dev/null); then
                :
            else
                echo "- $path"
                fail=yes
            fi
        fi
    fi
done

# Next check git ls-files, which gets a list of all files that are
# checked in.
git_ls=`git ls-files`
for file in $git_ls; do
    path="./${file}"
    # Ignore directories
    if [ ! -d $path ]; then
        if (grep ^$path$ $MANIFEST >/dev/null); then
            :
        else
            echo "+ $path"
            fail=yes
        fi
    fi
done

# Finish up
if [ "X$fail" = "Xyes" ]; then
    cat 1>&2 <<EOF
The MANIFEST is out of date. Files marked with a minus sign (-) no
longer exist; files marked with a plus sign (+) are GIT-managed but do
not appear in the MANIFEST.  Please remedy the situation and try again.
EOF
    exit 1
fi

if [ $errcode -ne 0 ]; then
    exit 1
fi 

test "$verbose" && echo "   The MANIFEST is up to date." 1>&2
exit 0