%define major 1
%define libname %mklibname %{name}_ %{major}
%define devname %mklibname %{name} -d

%bcond_with pdf

Summary:	Extremely powerful file compression utility
Name:		bzip2
Version:	1.0.8
Release:	2
License:	BSD
Group:		Archiving/Compression
Url:		http://www.bzip.org/index.html
Source0:	https://sourceware.org/pub/bzip2/bzip2-%{version}.tar.gz
Source1:	bzgrep
Source2:	bzme
Source3:	bzme.1
Source4:	bzip2.pc
Patch0:		bzip2-1.0.6-makefile.diff
Patch1:		bzip2-1.0.6-improve-makefile.patch
Patch2:		build_good-so-lib.patch
# (tpg) ClearLinux Patches
Patch10:	https://raw.githubusercontent.com/clearlinux-pkgs/bzip2/master/0001-Improve-file-access.patch
BuildRequires:	libtool
BuildRequires:	texinfo
%if %{with pdf}
BuildRequires:	tetex-dvips
BuildRequires:	tetex-latex
%endif
Requires:	mktemp
Requires:	%{libname} = %{version}-%{release}

%description
Bzip2 compresses files using the Burrows-Wheeler block-sorting text
compression algorithm, and Huffman coding. Compression is generally
considerably better than that achieved by more conventional LZ77/LZ78-based
compressors, and approaches the performance of the PPM family of statistical
compressors.

The command-line options are deliberately very similar to those of GNU Gzip,
but they are not identical.

%files
%doc README LICENSE CHANGES
%{_bindir}/*
%{_mandir}/man1/*

#----------------------------------------------------------------------------

%package -n %{libname}
Summary:	Libraries for developing apps which will use bzip2
Group:		System/Libraries

%description -n %{libname}
Library of bzip2 functions, for developing apps which will use the
bzip2 library (aka libz2).

%files -n %{libname}
%doc LICENSE
/%{_lib}/libbz2.so.%{major}
/%{_lib}/libbz2.so.%{major}.*

#----------------------------------------------------------------------------

%package -n %{devname}
Summary:	Header files for developing apps which will use bzip2
Group:		Development/C
Requires:	%{libname} = %{version}-%{release}
Provides:	lib%{name}-devel = %{version}-%{release}
Provides:	%{name}-devel = %{version}-%{release}
Obsoletes:	%{mklibname bzip2_ 1 -d} < 1.0.5-3

%description -n %{devname}
Header files and static library of bzip2 functions, for developing apps which
will use the bzip2 library (aka libz2).

%files -n %{devname}
%doc *.html LICENSE
%if %{with pdf}
%doc manual.pdf
%endif
%{_libdir}/libbz2.so
%{_includedir}/*.h
%{_libdir}/pkgconfig/*.pc

#----------------------------------------------------------------------------

%prep
%setup -q
%apply_patches

echo "lib = %{_lib}" >> config.in
echo "CFLAGS = %{optflags}" >> config.in
echo "LDFLAGS = %{ldflags}" >> config.in

cp %{SOURCE1} bzgrep
cp %{SOURCE2} bzme
cp %{SOURCE3} bzme.1
cp %{SOURCE4} bzip2.pc
sed -i "s|^libdir=|libdir=%{_libdir}|" bzip2.pc
sed -i "s|@VERSION@|%{version}|" bzip2.pc

%build
%make -f Makefile-libbz2_so
%make

%if %{with pdf}
texi2dvi --pdf manual.texi
%endif

%install
%make_install -f Makefile-libbz2_so
make install-bin install-dev -f Makefile DESTDIR=%{buildroot}

install -m755 %{SOURCE1} -D %{buildroot}%{_bindir}/bzgrep
install -m755 %{SOURCE2} -D %{buildroot}%{_bindir}/bzme
install -m644 %{SOURCE3} -D %{buildroot}%{_mandir}/man1/bzme.1
mkdir -p %{buildroot}%{_libdir}/pkgconfig
install -m0644 bzip2.pc %{buildroot}%{_libdir}/pkgconfig

cat > %{buildroot}%{_bindir}/bzless <<EOF
#!/bin/sh
%{_bindir}/bunzip2 -c "\$@" | %{_bindir}/less
EOF
chmod 755 %{buildroot}%{_bindir}/bzless

# Compatibility with Debian, Ubuntu and logics
# https://bugzilla.rosalinux.ru/show_bug.cgi?id=9286
# https://stackoverflow.com/a/10586169
# bashisms :(
IFS='.' read -r -a array <<< %{version}
buildroot_lib="%{buildroot}/%{_lib}"
cur_name="libbz2.so" #cur_name - current name
for index in "${!array[@]}"
do
	#echo "$index ${array[index]}"
	if [ "$index" != '0' ]
	then
		cur_name="${cur_name}.${array[index]}"
		[ ! -f "${buildroot_lib}/${cur_name}" ] && \
		ln -sr "${buildroot_lib}/${cur_name_major}" "${buildroot_lib}/${cur_name}"
	else
		cur_name_major="${cur_name}.${array[index]}"
		[ -f "${buildroot_lib}/${cur_name_major}" ] || exit 1
		cur_name="${cur_name_major}"
	fi
done