#!/bin/bash

#	-------------------------------------------------------------------
#
#	Shell program to rebuild rpm for cross-compile.
#
#	Copyright 2003,  <niisi@raiko2.NIISI>.
#
#	This program 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 (at your option) any later version. 
#
#	This program 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.
#
#	Description:
#
set +x

#. script
PROGNAME=$(basename $0)
VERSION="0.0.1"

#	-----------------
#	configure section
#	-----------------


# You can modify that list 
tool_ignore_reqs="/sbin/ldconfig /usr/bin/perl /bin/sh /sbin/install-info rpmlib.* pkgconfig /etc/termcap /usr/bin/env grep sed textutils mktemp fileutils initscripts words gawk sh-utils /usr/sbin/groupadd rpm cracklib-dicts pwdb /bin/ln /lib/cpp /usr/sbin/chkfontpath /usr/X11R6/bin/mkfontdir /usr/X11R6/bin/xauth XFree86-base-fonts XFree86-xfs"

# You can modify that list of files ext. for Function "get_all_files"
file_exts=".*\.h .*\.a .*\.la .*\.so .*\.so\..* .*\.pc .*\.hwm .*\.pwd .*\.pwi .*bitmaps/.* .*qmake\.conf"
tool_replace_reqs="libc.* libutil.* libm.* libdl.* libpthread.* libnsl.* librt.* libresolv.* ld-linux.* ld\.so\..* libstdc.*" 
spec_build_root='%{_tmppath}/%{name}'

#	-----------
#	Functions
#	-----------


# check errors
function check_error
{
        if [ "$1" != 0 ]
        then
		echo "${PROGNAME}: ${2:-'Unknown error'}" >&2
		exit 1
        fi
}                

function usage
{
	echo "Usage: ${PROGNAME} base_pack [aux_pack ... ]"
	echo "Optional: key -fb [file]"
}

# Section that see keys of programm
change_lib_flag=0
has_prefix_flag=0
default_insert_place=0

TEMP=`getopt -o t:: --long fb: --long prefix:,arch: -- "$@"`
 
if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
 
# Note the quotes around `$TEMP': they are essential!
eval set -- "$TEMP"
#set -x 
while true ; do
        case "$1" in
                --fb) change_lib_flag=1; file=$2 ; shift 2 ;;
		--prefix) has_prefix_flag=1; objprefix=$2; shift 2;;
		--arch) build_arch=$2; shift 2;;
		-t) 
			case "$2" in 
				"") default_insert_place="post"; shift 2;;
				*) default_insert_place=$2 ; shift 2;;
			esac ;;
                --) shift ; break ;;
                *) echo "Internal error!" ; exit 1 ;;
        esac
done
#set +x

prefix=${objprefix}
lib_prefix=${prefix}/${build_arch}/lib
include_prefix=${prefix}/${build_arch}/include

if [ ! -f $file ]
then
check_error 1 "No such file $file"
fi

if [ $change_lib_flag -eq 1 ]
then
	file ${file} | grep ASCII > /dev/null
	check_error $? "Not right format of fb file: ${file}"
fi


# Check number of args
function check_args
{
	num="$1"
	shift
	func="$1"
	shift
	if [ $# -ne $num ]
	then
		check_error 1 "Internal error in ${func}"
	fi
}

function list2grep
{
	for i in $@
	do
		echo '-e ^'"$i"'$'
	done
}

function list2sed
{
	repl="$1"
	shift
	for i in $@
	do
		echo "s|^${build_arch}-$i$|${repl}|; "
	done
}

function xecho
{
	echo -ne $1

}

# ###### Section with functions to generate RPM specs items ######  #

# -- Section with base functions to create all basic information -- #

# Funcion that get require any RPM information 
function rpm_info
{
	check_args 2 "$FUNCNAME" $@
	what="$1"
	pack="$2"
	rpm -pq --qf '[%{'${what}'}\n]' ${pack} 2>/dev/null
	check_error $? "No rpm file ${pack}"
}

# Function get name of RPM pack
function get_pack_name
{
	rpm_info NAME $@
}

# Function get version of RPM pack
function get_pack_vers
{
	rpm_info VERSION $@
}

# Function get release of RPM pack
function get_pack_rel
{
	rpm_info RELEASE $@
}

# Function get provides of RPM pack
function get_pack_provides
{
	rpm_info PROVIDES $@
}

# Function get requires of RPM pack
function get_pack_reqs
{
	rpm_info REQUIRENAME $@
}

# ------   Section that generate provides and requires 	 -------  #
# ------ 	of RPM for toolchain-utils 		 -------- #

# Function generate provides that needs for RPM 
# mips-linux (See configure section for Ignore list) 
function get_all_provides
{
	base_pack="$1"
	grep_ignore_list=`get_pack_name ${base_pack} | sed -e "s/^.*$/^&$/"`
	for i in $@
	do
		get_pack_provides $i
	done | sort | uniq | grep -v ${grep_ignore_list}
}

# Function generate requires that needs for 
# mips-linux RPM (See configure section for Ignore list)
function get_all_requires
{
	grep_ignore_list=`list2grep $tool_ignore_reqs`
	provides_list=`get_all_provides $@`
	grep_ignore_list="${grep_ignore_list} `list2grep $provides_list`"
	for  i in $@
	do
		pack_list="${pack_list} `get_pack_name $i`"
	done
	grep_ignore_list="${grep_ignore_list} `list2grep $pack_list`"
	for  i in $@
	do
		get_pack_reqs $i
	done | sort | uniq | grep -v ${grep_ignore_list}
}

# ------ Section that generate and output RPM specs headers ------ #

# Function create Summary of mips-linux RPM packet
function get_Summary
{
	echo -n "Summary: "

	rpm_info SUMMARY $@
}

# Function create Name of mips-linux RPM packet
function get_Name
{
	check_args 1 "$FUNCNAME" $@
	echo -n "${build_arch}-"
	get_pack_name "$1"
}

# Function create Version of mips-linux RPM packet
function get_Version
{
	echo -n "Version: "

	get_pack_vers $@
} 

# Function create Release of mips-linux RPM packet
function get_Release
{
	echo -n "Release: "

	get_pack_rel $@
} 

# Function create License of mips-linux RPM packet
function get_License
{
	echo -n "License: "

	rpm_info LICENSE $@
}

# Function create Group of mips-linux RPM packet
function get_Group
{
	echo -n "Group: "

	echo "Development/Libraries/MIPS"
}

# Function create Sources of mips-linux RPM packet
function get_Sources
{
	n=0
	for i in $@
	do
		name=`basename "$i"`
		echo "Source$n: ${name}"
		n=`expr $n + 1`
	done
	
}

# Function create Requires of mips-linux RPM packet
function get_Requires
{
	#set -x

	#sed_list=`list2sed ${build_arch}-glibc ${tool_replace_reqs}`
	sed_list=`list2sed toolchain-mips ${tool_replace_reqs}`
	
	echo -n "Requires: "	

	get_all_requires $@ | sed -e "s/^.*$/${build_arch}-&/" | sed -e "${sed_list}" | sort | uniq
}

# Function create Provides of mips-linux RPM packet
function get_Provides
{
	provides=`get_all_provides $@`
	if [ ! -z "${provides}" ]
	then
		echo -n "Provides: "
		echo "${provides}" | sed -e "s/^.*$/${build_arch}-&/"
	fi
}

# ------   Section that generate RPM spec-file sections    ------ #
# ------   (like descriptions, install, etc...) 	   ------ #

# Function create list of RPM packet files
function get_pack_files
{
	check_args 1 "$FUNCNAME" $@
	pack="$1"
	rpm -pql "${pack}"
	check_error $? "No rpm file ${pack_path}"
}


# Function generate files for mips-linux RPM packet
# (See configure sections for list of files ext.)
function get_all_files
{
	grep_ext_list=`list2grep ${file_exts}`
	for i in $@
	do
		get_pack_files $i
	done | grep ${grep_ext_list}
}

# Function create %Description section of mips-linux RPM packet
function get_Description
{
	echo '%description'

	rpm_info DESCRIPTION $@
}

# Function create %Prep section of mips-linux RPM packet
function get_Prep 
{
	echo '%setup -c -T'
	cpio="cpio -i --no-absolute-filenames --make-directories --no-preserve-owner"
	get_Sources ${base_pack} ${aux_packs} | 
		sed -e 's/\(Source[0-9]*\).*$/\1/' | tr '[a-z]' '[A-Z]' |
		sed -e "s/^.*/rpm2cpio \%\{&\} | ${cpio}/"
}

# Function create %Build section of mips-linux RPM packet
function get_Build
{
	echo '[' -d usr/lib/pkgconfig ']' '&&' find usr/lib/pkgconfig -name '\*.pc' -exec sh -c '"' mv '{}' '{}.tmp' '&&' sed -e "s./usr.${prefix}/${build_arch}.g" '{}.tmp' '>' '{}"' "';'"

	 echo find usr/ -name '\*.la' -exec sh -c '"' mv '{}' '{}.tmp' '&&' sed -e "s./usr.${prefix}/${build_arch}.g" '{}.tmp' '>' '{}"' "';'"
}

# Function create %Install section of mips-linux RPM packet
function get_Install
{
	get_all_files $@ |
		sed -e 's|^/\(.*\)$|install_file \1 /\1|' |
#		sed -e 's|^/\(.*\)$|mkdir -p `dirname /\1`; test ! -e /\1 -o -L /\1 \&\& rm -f /\1 \&\& cp -a \1 /\1|' |
		sed "s. /usr/include/asm-sparc. \$RPM_BUILD_ROOT${include_prefix}/asm.g" |
		sed "s. /usr/include. \$RPM_BUILD_ROOT${include_prefix}.g" |
		sed "s. /usr/X11R6/include. \$RPM_BUILD_ROOT${include_prefix}.g" |
		sed "s. /usr/include/linux. \$RPM_BUILD_ROOT${include_prefix}/linux.g" |
		sed "s. /usr/kerberos/include. \$RPM_BUILD_ROOT${include_prefix}.g" |
		#sed "s./usr/\([/a-zA-Z0-9]*\)include. \$RPM_BUILD_ROOT${include_prefix}.g" |
		sed "s. /lib. \$RPM_BUILD_ROOT${lib_prefix}.g" |
		sed "s. /usr/lib. \$RPM_BUILD_ROOT${lib_prefix}.g" | 
		#sed "s./usr\([/a-zA-Z0-9]*\)lib. \$RPM_BUILD_ROOT${lib_prefix}.g" 
		sed "s. /usr/X11R6/lib. \$RPM_BUILD_ROOT${lib_prefix}.g" |
		sed "s. /usr/share/doc/ncurses-devel-5\.2/test. \$RPM_BUILD_ROOT${include_prefix}.g" |
		sed "s. /usr/share/doc/db3-devel-3\.3\.11/examples_c. \$RPM_BUILD_ROOT${include_prefix}.g" |
		sed "s. /usr/kerberos/lib. \$RPM_BUILD_ROOT${lib_prefix}.g" |
		sed "s. /usr/X11R6/LessTif/Motif1\.2/lib. \$RPM_BUILD_ROOT${lib_prefix}.g" |
		sed "s. /usr/X11R6/LessTif/Motif1\.2/include. \$RPM_BUILD_ROOT${include_prefix}.g" |
		sed "/\/usr\/share\/doc/d"
}

# Function create %Clean section of mips-linux RPM packet
function get_Clean
{
	echo 'rm -rf $RPM_BUILD_ROOT'
}

#Function create %post section of mips-linux RPM package
function get_Post
{
	if [ $change_lib_flag -eq 1 ]
	then
        	if [ $has_prefix_flag -eq 1 ]
        	then
                	cat $file | sed "s. \${lib_prefix}. $lib_prefix.g"
        	else cat $file
        	fi
	fi	
}

# Function create %Files section of mips-linux RPM packet
function get_Files
{
	echo '%defattr(-,root,root)'
	echo "${prefix}/${build_arch}" 
}

# ---------------------------
#	Program starts here
# ---------------------------

##### Main Logic #####

if [ $# -eq 0 ]
then
	usage
	exit 1
fi


base_pack="$1"
shift
aux_packs="$@"


(
get_Summary ${base_pack}
check_error $?

echo -n "Name: "
get_Name ${base_pack}
check_error $?

get_Version ${base_pack}
check_error $?


get_Release ${base_pack}
check_error $?

get_License ${base_pack}
check_error $?

get_Group ${base_pack}
check_error $?

get_Sources ${base_pack} ${aux_packs}
if [ $change_lib_flag -eq 1 ]
then
	echo "Source1000: ${file}"
	check_error $?
fi
echo "BuildRoot: ${spec_build_root}"
echo "AutoReqProv: no"

echo `get_Requires ${base_pack} ${aux_packs}`
check_error $?

echo `get_Provides ${base_pack} ${aux_packs}`
check_error $?

echo -ne "\n"

get_Description ${base_pack}

echo -ne "\n"

echo '%prep'
get_Prep ${base_pack}

echo -ne "\n"

echo '%build'
get_Build
if [ $change_lib_flag -eq 1 ] && [ $default_insert_place == "build" ]
	then 
	get_Post
	echo -ne "\n"
fi


echo -ne "\n"

echo '%install'
echo 'install_file()'
echo '{'
echo -e '\tsrc="$1"'
echo -e '\tdst="$2"'
echo -e	'\tmkdir -p `dirname ${dst}`'
echo -e '\tif [ -L ${src} ]'
echo -e '\tthen'
echo -e '\t\tif [ ! -e ${dst} ]'
echo -e '\t\tthen'
echo -ne '\t\t\tdr_src=`ls -l ${src} | '
echo "sed 's/^.*-> \(.*\)$/\1/'"'`'
echo -e '\t\t\techo ${dst}'
echo -e '\t\t\tif echo ${dr_src} |'"grep '^\.\./.*$'"
echo -e '\t\t\tthen'
echo -e '\t\t\t\tlinkto=`basename ${dr_src}`'
echo -e '\t\t\t\ttest ! -e ${dst} && ln -s ${linkto} ${dst}'
echo -e '\t\t\telse'
echo -e '\t\t\t\tcp -a ${src} ${dst}'
echo -e '\t\t\tfi'
echo -e '\t\tfi'
echo -e '\telse'
echo -e '\t\ttest -L ${dst} && rm -f ${dst}'
echo -e '\t\tcp -a ${src} ${dst}'
echo -e '\tfi'
echo '}'

get_Install ${base_pack} ${aux_packs}
if [ $change_lib_flag -eq 1 ] && [ $default_insert_place == "install" ]
	then 
	get_Post
	echo -ne "\n"
fi

echo -ne "\n"

echo '%clean'
get_Clean

echo -ne "\n"

if [ $change_lib_flag -eq 1 ] && [ $default_insert_place == "post" ]
then
	echo '%post'
	get_Post
	echo -ne "\n"
fi

echo '%files'
get_Files

) > $(get_Name ${base_pack}).spec