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#!/bin/bash
#
# mkpatch: 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=1.1
BASENAME=`basename $0`
function get_line {
# get a line $1 from file $2
[ $# -ne 2 ] && exit $ERROR_PAR_NUMBER
! is_number $1 && exit $ERROR_NOT_NUMBER
[ ! -e $2 ] && exit $ERROR_FILE_NOTFOUND
sed "$1 q;d" $2
}
function get_diff_line {
# get diff line e return:
# - Action in Diff_Action
# - Diff Line in Diff_Str_Line
if [ $1 -gt $Diff_N_Lines ]; then
Diff_Action=" "
Diff_Str_Line=""
return 0
fi
Line=`get_line $1 $2`
Diff_Action=`echo "$Line" | cut -c1`
Diff_Str_Line=`echo "$Line" | cut -c2-`
}
# ----------------------------------------------------------------
# ------------------- mkpatch program ----------------------------
# common.sh library start
COMMON_SH="/usr/libexec/simplepkg/common.sh"
if [ -f "$COMMON_SH" ]; then
source $COMMON_SH
else
echo "$BASENAME: file $COMMON_SH not found. Check your $BASENAME installation"
fi
# Load error codes
error_codes
# ----------------
if [ "$1" = "--help" -o "$1" = "-h" ]; then
echo "Use: $BASENAME <diff_file> <source_file>"
exit $ERROR_HELP
fi
# Check input parameters
[ $# -ne 2 ] && exit $ERROR_PAR_NUMBER
[ ! -e $1 ] && exit $ERROR_FILE_NOTFOUND
[ ! -e $2 ] && exit $ERROR_FILE_NOTFOUND
# Start variables
Diff_File=$1
Source_File=$2
Diff_N_Lines=`wc -l $1 | cut -f1 -d" "`
Source_N_Lines=`wc -l $2 | cut -f1 -d" "`
# Start vars
Diff_Line=1
Diff_Pointer=1
Status_Diff=0
# Get frist Diff_File line
get_diff_line $Diff_Line $Diff_File || exit $?
Source_Line=1
# Get frist Source_File line
Source_Str_Line=`get_line $Source_Line $Source_File` || exit $?
while [ $Source_Line -le $Source_N_Lines ]; do
# make Actions
case $Diff_Action in
'-')
if [ "$Source_Str_Line" = "$Diff_Str_Line" ]; then
Status_Diff=1
let Diff_Line++
else
Diff_Line=$Diff_Pointer
Status_Diff=0
echo "$Source_Str_Line"
fi
get_diff_line $Diff_Line $Diff_File || exit $?
let Source_Line++
Source_Str_Line=`get_line $Source_Line $Source_File` || exit $?
;;
'+')
echo "$Diff_Str_Line"
let Diff_Line++
get_diff_line $Diff_Line $Diff_File || exit $?
;;
' ')
if [ "$Source_Str_Line" = "$Diff_Str_Line" ]; then
Status_Diff=1
let Diff_Line++
else
Status_Diff=0
Diff_Line=$Diff_Pointer
fi
echo "$Source_Str_Line"
get_diff_line $Diff_Line $Diff_File || exit $?
let Source_Line++
Source_Str_Line=`get_line $Source_Line $Source_File` || exit $?
;;
'=')
let Diff_Line++
Status_Diff=0
Diff_Pointer=$Diff_Line
get_diff_line $Diff_Line $Diff_File || exit $?
;;
*)
echo "Invalid diff action."
exit $ERROR_MKPATCH
;;
esac
done
# Make others addline "+" in the end file
while [ "$Diff_Action" = "+" -a $Diff_Line -le $Diff_N_Lines ]; do
echo "$Diff_Str_Line"
let Diff_Line++
get_diff_line $Diff_Line $Diff_File || exit $?
done
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