#!/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 files COPYING and Copyright.html.  COPYING can be found at the root
# of the source code distribution tree; Copyright.html can be found at the
# root level of an installed copy of the electronic HDF5 document set and
# is linked from the top-level documents page.  It can also be found at
# http://hdfgroup.org/HDF5/doc/Copyright.html.  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 that (if this is a
# SVN checkout) that all the SVN-managed files appear in the
# MANIFEST.

verbose=yes
MANIFEST=/tmp/HD_MANIFEST.$$
SVNENTRY=/tmp/HD_SVNENTRY.$$

# function definitions

GETSVNENTRIES_13 ()
# Purpose: Extract filenames from the svn v1.3.* entries file
# $1: directory name in which the svn entries is.
# steps:
# 1. remove all single line entries so that step 2 does not fail on them. 
# 2. merge all multiple lines entries into single lines.
# 3. remove all non file entries.
# 4. insert a blank line because some entries files has no kind="file"
#    entry and ed does not like to do g on an empty file.
# 5. remove everything except the file name.
# 6. remove all blank lines, including the inserted one.
{
cp $1/entries $SVNENTRY
chmod u+w $SVNENTRY	# entries file is not writable.
ed - $SVNENTRY <<EOF
g/^<.*>$/d
g/^</.,/>$/j
v/kind="file"/d
a

.
g/.*name="/s///
g/".*/s///
g/^$/d
w
q
EOF
cat $SVNENTRY
rm $SVNENTRY
}

GETSVNENTRIES_14 ()
# Purpose: Extract filenames from the svn v1.4.* entries file
# $1: directory name in which the svn entries is.
# steps:
# 1. all valid files are followed by a line containing "file" only.
# 2. find them by looking for "file" first, then mark its preceding line as
#    wanted.
# 3. remove all non-marked line.
# 4. insert a blank line because some entries files has no kind="file"
#    entry and ed does not like to do g on an empty file.
# 5. remove the marks.
{
cp $1/entries $SVNENTRY
chmod u+w $SVNENTRY	# entries file is not writable.
ed - $SVNENTRY <<EOF
g/^file$/-s/^/%WANTED%/
v/%WANTED%/d
a

.
g/^%WANTED%/s///
w
q
EOF
cat $SVNENTRY
rm $SVNENTRY
}


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

# 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

# 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


# Inspect the .svn/entries to figure out what version of svn file entry is
# used.
# The following algorithm is formed via reverse engineering.
# I don't know what the official svn format is if such a specification exists.
# Algorithm:
# If the first line of the file has 'xml version="1.0"' in it, it is created
# by svn 1.3 or older; else if it has '^file$' in it, it is created by svn 1.4.
svn_entry_file=.svn/entries
if head -1 $svn_entry_file | grep 'xml version="1.0"' > /dev/null 2>&1;then
    getsvnentries=GETSVNENTRIES_13
elif grep '^file$' $svn_entry_file > /dev/null 2>&1; then
    getsvnentries=GETSVNENTRIES_14
else
    echo "Unknown svn entries format. Aborted"
    exit 1
fi

for svn in `find . -type d -name .svn -print`; do
    path=`echo $svn |sed 's/\/.svn//'`
    for file in `$getsvnentries $svn`; do
	if (grep ^$path/$file$ $MANIFEST >/dev/null); then
	    :
	else
	    echo "+ $path/$file"
	    fail=yes
	fi
    done
done

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 SVN-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