#!/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