#!/bin/sh
# $Id: id3lib.SlackBuild,v 1.7 2017/09/11 16:28:29 root Exp root $
# Copyright (c) 2007,2008,2010,2017  Eric Hameleers, Eindhoven, NL
# All rights reserved.
#
#   Permission to use, copy, modify, and distribute this software for
#   any purpose with or without fee is hereby granted, provided that
#   the above copyright notice and this permission notice appear in all
#   copies.
#
#   THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
#   WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#   MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
#   IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
#   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
#   USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
#   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
#   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
#   OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
#   SUCH DAMAGE.
# -----------------------------------------------------------------------------
#
# Slackware SlackBuild script 
# ===========================
# By:        Eric Hameleers <alien@slackware.com>
# For:       id3lib
# Descr:     id3 tag manipulation library
# URL:       http://id3lib.sourceforge.net/
# Needs:     
# Changelog:
# 3.8.3-1:   05/jan/2005 by Eric Hameleers
#            * Initial build.
# 3.8.3-2:   28/May/2007 by Eric Hameleers <alien@slackware.com>
#            * Revamped SlackBuild
# 3.8.3-3:   21/jun/2008 by Eric Hameleers <alien@slackware.com>
#            * Revamped SlackBuild again
# 3.8.3-4:   31/jan/2010 by Eric Hameleers <alien@slackware.com>
#            * Rebuilt for Slackware64.
# 3.8.3-5:   01/jun/2010 by Eric Hameleers <alien@slackware.com>
#            * Rebuilt for Slackware 13.1.
# 3.8.3-6:   11/sep/2017 by Eric Hameleers <alien@slackware.com>
#            * Rebuilt for Slackware 14.2 and -current.
# 
# Run 'sh id3lib.SlackBuild' to build a Slackware package.
# The package (.tgz) plus descriptive .txt file are created in /tmp .
# Install using 'installpkg'. 
#
# -----------------------------------------------------------------------------

# Set initial variables:

PRGNAM=id3lib
VERSION=${VERSION:-3.8.3}
BUILD=${BUILD:-6}
TAG=${TAG:-alien}

DOCS="AUTHORS COPYING ChangeLog HISTORY NEWS README THANKS TODO doc/*"

# Where do we look for sources?
SRCDIR=$(cd $(dirname $0); pwd)

# Place to build (TMP) package (PKG) and output (OUTPUT) the program:
TMP=${TMP:-/tmp/build}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

SOURCE="$SRCDIR/${PRGNAM}-${VERSION}.tar.gz"
SRCURL="http://downloads.sourceforge.net/${PRGNAM}/${PRGNAM}-${VERSION}.tar.gz"

##
## --- with a little luck, you won't have to edit below this point --- ##
##

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i486 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
fi

case "$ARCH" in
  i486)      SLKCFLAGS="-O2 -march=i486 -mtune=i686"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  x86_64)    SLKCFLAGS="-O2 -fPIC"
             SLKLDFLAGS="-L/usr/lib64"; LIBDIRSUFFIX="64"
             ;;
  *)         SLKCFLAGS="-O2"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
esac

# Exit the script on errors:
set -e
trap 'echo "$0 FAILED at line $LINENO!" | tee $OUTPUT/error-${PRGNAM}.log' ERR
# Catch unitialized variables:
set -u
P1=${1:-1}

# Save old umask and set to 0022:
_UMASK_=$(umask)
umask 0022

# Create working directories:
mkdir -p $OUTPUT          # place for the package to be saved
mkdir -p $TMP/tmp-$PRGNAM # location to build the source
mkdir -p $PKG             # place for the package to be built
rm -rf $PKG/*             # always erase old package's contents
rm -rf $TMP/tmp-$PRGNAM/* # remove the remnants of previous build

if ! [ -f ${SOURCE} ]; then
  echo "Source '$(basename ${SOURCE})' not available yet..."
  # Check if the $SRCDIR is writable at all - if not, download to $OUTPUT
  [ -w "$SRCDIR" ] || SOURCE="$OUTPUT/$(basename $SOURCE)"
  if [ -f ${SOURCE} ]; then echo "Ah, found it!"; continue; fi
  if ! [ "x${SRCURL}" == "x" ]; then
    echo "Will download file to $(dirname $SOURCE)"
    wget -nv -T 20 -O "${SOURCE}" "${SRCURL}" || true
    if [ $? -ne 0 -o ! -s "${SOURCE}" ]; then
      echo "Downloading '$(basename ${SOURCE})' failed... aborting the build."
      mv -f "${SOURCE}" "${SOURCE}".FAIL
      exit 1
    fi
  else
    echo "File '$(basename ${SOURCE})' not available... aborting the build."
    exit 1
  fi
fi

if [ "$P1" == "--download" ]; then
  echo "Download complete."
  exit 0
fi

# --- PACKAGE BUILDING ---

echo "++"
echo "|| $PRGNAM-$VERSION"
echo "++"

cd $TMP/tmp-$PRGNAM

echo "Extracting the source archive(s) for $PRGNAM..."
tar -xvf ${SOURCE}
chown -R root:root *
chmod -R u+w,go+r-w,a+X-s *
 
cd ${PRGNAM}-${VERSION}

# Patches obtained from Arch who obtained them from Debian and elsewhere -
# Use proper C++ headers:
cat $CWD/patches/id3lib.cppheaders.patch | patch -p1 --verbose || exit 1
# Add man pages:
cat $CWD/patches/id3lib.manpages.patch | patch -p1 --verbose || exit 1
# Write UTF8/UTF16 characters correctly:
cat $CWD/patches/id3lib.utf8_writing.patch | patch -p1 --verbose || exit 1
# Securely use mkstemp:
cat $CWD/patches/id3lib.mkstemp.patch | patch -p1 --verbose || exit 1
# Add C wrapper functions for field encoding:
cat $CWD/patches/id3lib.c_wrapper.patch | patch -p1 --verbose || exit 1
# Add a null pointer check:
cat $CWD/patches/id3lib.nullpointer_check.patch | patch -p1 --verbose || exit 1
# Fix stack smash crashes when reading VBR MP3:
cat $CWD/patches/id3lib.vbr_stack_smash.patch | patch -p1 --verbose || exit 1

# iomanip.h is obsolete; use the standard C++ header:
sed -e "s%iomanip.h%iomanip%g" -i configure

echo Building ...
LDFLAGS="$SLKLDFLAGS" \
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --localstatedir=/var \
  --sysconfdir=/etc \
  --enable-static=no \
  --enable-debug=no \
  --program-prefix= \
  --program-suffix= \
  --build=$ARCH-slackware-linux \
  2>&1 | tee $OUTPUT/configure-${PRGNAM}.log
make 2>&1 | tee $OUTPUT/make-${PRGNAM}.log

# Install all the needed stuff to the package dir
make DESTDIR=$PKG install 2>&1 |tee $OUTPUT/install-${PRGNAM}.log

# Make the docs
make docs
 
# Strip down the doc and examples directories so we can copy w/impunity:
for i in doc/ examples/; do \
  find $i                   \
  \(  -name 'Makefile*' -or \
      -name '*.ps.gz'   -or \
      -name '*.pdf'     -or \
      -name '*.in'          \
  \)  -exec rm {} \; ; done

# Add documentation:
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION || true
cp -a $SRCDIR/$(basename $0) $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
chown -R root:root $PKG/usr/doc/$PRGNAM-$VERSION
find $PKG/usr/doc -type f -exec chmod 644 {} \;

# Remove the massive amount of API docs
rm -rf $PKG/usr/doc/$PRGNAM-$VERSION/api

# Compress the man page(s):
if [ -d $PKG/usr/man ]; then
  find $PKG/usr/man -type f -name "*.?" -exec gzip -9f {} \;
fi

# Strip binaries:
find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

# Add a package description:
mkdir -p $PKG/install
cat $SRCDIR/slack-desc > $PKG/install/slack-desc

# Build the package:
cd $PKG
makepkg --linkadd y --chown n $OUTPUT/${PRGNAM}-${VERSION}-${ARCH}-${BUILD}${TAG}.tgz 2>&1 | tee $OUTPUT/makepkg-${PRGNAM}.log
cd $OUTPUT
md5sum ${PRGNAM}-${VERSION}-${ARCH}-${BUILD}${TAG}.tgz > ${PRGNAM}-${VERSION}-${ARCH}-${BUILD}${TAG}.tgz.md5
cd -
cat $PKG/install/slack-desc | grep "^${PRGNAM}" > $OUTPUT/${PRGNAM}-${VERSION}-${ARCH}-${BUILD}${TAG}.txt

# Restore the original umask:
umask ${_UMASK_}