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#!/bin/bash
#
# MKPatch 2.0.0: Simple patch program to .mkbuild models
# feedback: rudsonaalves at yahoo.com.br | gpl
#
# mkbuild 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 2 of the License, or any later version.
#
# mkbuild 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
# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
# Place - Suite 330, Boston, MA 02111-1307, USA
#
# Input:
# - $1 Diff_File
# - #2 Source_File
#
# Version:
PROG_VERSION=2.0
BASENAME=`basename $0`
if [ "$1" = "--help" -o "$1" = "-h" ]; then
echo "Use: $BASENAME <diff_file> <source_file>"
exit $ERROR_HELP
fi
# check number of parameters
[ $# -ne 2 ] && exit 102
# check diff_file exit
[ ! -e $1 ] && exit 100
# check source_file exit
[ ! -e $2 ] && exit 100
# Change IFS to <ENTER> only
OLD_IFS=$IFS
IFS='
'
# Read file patch
index=0
while read line; do
Diff_lines[index]="`echo $line | cut -c2-`"
Diff_action[index]="`echo $line | cut -c1`"
let index++
done < $1
let Diff_n_lines=index-1
#for index in `seq 1 $Diff_n_lines`; do
# echo "Action:"${Diff_action[index]}"< Line:"${Diff_lines[index]}"<"
#done
# Read source file
index=0
while read line; do
Source_lines[index]="$line"
let index++
done < $2
let Source_n_lines=index-1
#for index in `seq 1 $Source_n_lines`; do
# echo "${Source_lines[index]}"
#done
IFS=$OLD_IFS
Source_index=0
Diff_index=0
Diff_pointer=0
Status_diff=0
Output=""
Output_index=0
#echo -e "\n\nStart Patch...\n\n"
#set -x
while [ $Source_index -le $Source_n_lines -a $Diff_index -le $Diff_n_lines ]; do
# make Actions
#echo ">${Diff_action[Diff_index]}<"
case "${Diff_action[Diff_index]}" in
'-')
if [ "${Source_lines[Source_index]}" == "${Diff_lines[Diff_index]}" ]; then
Status_diff=1
let Diff_index++
else
Diff_index=$Diff_pointer
Status_diff=0
Output[Output_index]="${Source_lines[Souce_index]}"
let Output_index++
fi
let Source_index++
;;
'+')
Output[Output_index]="${Diff_lines[Diff_index]}"
let Diff_index++
let Output_index++
;;
' ')
if [ "${Source_lines[Source_index]}" == "${Diff_lines[Diff_index]}" ]; then
Status_diff=1
let Diff_index++
else
Status_diff=0
Diff_index=$Diff_pointer
fi
Output[Output_index]="${Source_lines[Source_index]}"
let Output_index++
let Source_index++
;;
'=')
let Diff_index++
Status_diff=0
Diff_pointer=$Diff_index
;;
'*')
echo "Invalid diff action."
exit 600
;;
esac
#read ANS; clear
done
#set -x
if [ $Diff_index -gt $Diff_n_lines -a $Source_index -le $Source_n_lines ]; then
for index in `seq $Source_index $Source_n_lines`; do
Output[Output_index]="${Source_lines[index]}"
let Output_index++
done
elif [ $Diff_index -le $Diff_n_lines ]; then
# Make others addline "+" in the end file
while [ "${Diff_Action[Diff_index]}" == "+" ]; do
Output[Output_index]="${Diff_lines[Diff_index]}"
let Diff_index++
let Output_index++
done
fi
#exit 1
# Print Output file
for index in `seq 1 $Output_index`; do
echo "${Output[$index-1]}"
done
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