#!/bin/bash

YEAR=`date +%Y`

HGROOT=`hg root`

function hg_year() {

    if [ -n "$(hg st $1)" ]; then

        echo $YEAR

    else

        hg log -l 1 --template='{date|isodate}\n' $1 |

        cut -d '-' -f 1

    fi

}

function update_header() {

    TMP_FILE=`mktemp`

    FILE_NAME=$1

    (echo "/* -*- mode: C++; indent-tabs-mode: nil; -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library.

 *

 * Copyright (C) 2003-"$(hg_year $1)"

 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided \"AS IS\" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

"

	awk 'BEGIN { pm=0; }

     pm==3 { print }

     /\/\* / && pm==0 { pm=1;}

     /[^:blank:]/ && (pm==0 || pm==2) { pm=3; print;}

     /\*\// && pm==1 { pm=2;}

    ' $1

	) >$TMP_FILE

    HEADER_CH=`diff -q $TMP_FILE $FILE_NAME >/dev/null&&echo NO||echo YES`

    rm $FILE_NAME

    mv $TMP_FILE $FILE_NAME

}

function update_tabs() {

    TMP_FILE=`mktemp`

    FILE_NAME=$1

    cat $1 |

    sed -e 's/\t/        /g' >$TMP_FILE

    TABS_CH=`diff -q $TMP_FILE $FILE_NAME >/dev/null&&echo NO||echo YES`

    rm $FILE_NAME

    mv $TMP_FILE $FILE_NAME

}

function remove_trailing_space() {

    TMP_FILE=`mktemp`

    FILE_NAME=$1

    cat $1 |

    sed -e 's/ \+$//g' >$TMP_FILE

    SPACES_CH=`diff -q $TMP_FILE $FILE_NAME >/dev/null&&echo NO||echo YES`

    rm $FILE_NAME

    mv $TMP_FILE $FILE_NAME

}

function long_line_test() {

    cat $1 |grep -q -E '.{81,}'

}

function update_file() {

    echo -n '    update' $i ...

    update_header $1

    update_tabs $1

    remove_trailing_space $1

    CHANGED=NO;

    if [[ $HEADER_CH = YES ]];

    then

	echo -n '  [header updated]'

	CHANGED=YES;

    fi

    if [[ $TABS_CH = YES ]];

    then

	echo -n ' [tabs removed]'

	CHANGED=YES;

    fi

    if [[ $SPACES_CH = YES ]];

    then

	echo -n ' [trailing spaces removed]'

	CHANGED=YES;

    fi

    if long_line_test $1 ;

    then

	echo -n ' [LONG LINES]'

	((LONG_LINE_FILES++))

    fi

    echo

    if [[ $CHANGED = YES ]];

    then

	((CHANGED_FILES++))

    fi

}

CHANGED_FILES=0

TOTAL_FILES=0

LONG_LINE_FILES=0

if [ $# == 0 ]; then

    echo Update all source files...

    for i in `hg manifest|grep -E  '\.(cc|h|dox)$'`

    do

	update_file $HGROOT/$i

	((TOTAL_FILES++))

    done

    echo '  done.'

else

    for i in $*

    do

	update_file $i

	((TOTAL_FILES++))

    done

fi

echo $CHANGED_FILES out of $TOTAL_FILES files has been changed.

if [[ $LONG_LINE_FILES -gt 1 ]]; then

    echo

    echo WARNING: $LONG_LINE_FILES files contains long lines!    

    echo

elif [[ $LONG_LINE_FILES -gt 0 ]]; then

    echo

    echo WARNING: a file contains long lines!

    echo

fi