# For compatibility
def base_path_join(a, *p):
    return oe.path.join(a, *p)

def base_path_relative(src, dest):
    return oe.path.relative(src, dest)

def base_path_out(path, d):
    return oe.path.format_display(path, d)

def base_read_file(filename):
    return oe.utils.read_file(filename)

def base_ifelse(condition, iftrue = True, iffalse = False):
    return oe.utils.ifelse(condition, iftrue, iffalse)

def base_conditional(variable, checkvalue, truevalue, falsevalue, d):
    return oe.utils.conditional(variable, checkvalue, truevalue, falsevalue, d)

def base_less_or_equal(variable, checkvalue, truevalue, falsevalue, d):
    return oe.utils.less_or_equal(variable, checkvalue, truevalue, falsevalue, d)

def base_version_less_or_equal(variable, checkvalue, truevalue, falsevalue, d):
    return oe.utils.version_less_or_equal(variable, checkvalue, truevalue, falsevalue, d)

def base_contains(variable, checkvalues, truevalue, falsevalue, d):
    return oe.utils.contains(variable, checkvalues, truevalue, falsevalue, d)

def base_both_contain(variable1, variable2, checkvalue, d):
    return oe.utils.both_contain(variable1, variable2, checkvalue, d)

def base_prune_suffix(var, suffixes, d):
    return oe.utils.prune_suffix(var, suffixes, d)

def oe_filter(f, str, d):
    return oe.utils.str_filter(f, str, d)

def oe_filter_out(f, str, d):
    return oe.utils.str_filter_out(f, str, d)

def machine_paths(d):
    """List any existing machine specific filespath directories"""
    machine = d.getVar("MACHINE", True)
    filespathpkg = d.getVar("FILESPATHPKG", True).split(":")
    for basepath in d.getVar("FILESPATHBASE", True).split(":"):
        for pkgpath in filespathpkg:
            machinepath = os.path.join(basepath, pkgpath, machine)
            if os.path.isdir(machinepath):
                yield machinepath

def is_machine_specific(d):
    """Determine whether the current recipe is machine specific"""
    machinepaths = set(machine_paths(d))
    srcuri = d.getVar("SRC_URI", True).split()
    for url in srcuri:
        fetcher = bb.fetch2.Fetch([srcuri], d)
        if url.startswith("file://"):
            if any(fetcher.localpath(url).startswith(mp + "/") for mp in machinepaths):
                return True

oe_soinstall() {
	# Purpose: Install shared library file and
	#          create the necessary links
	# Example:
	#
	# oe_
	#
	#bbnote installing shared library $1 to $2
	#
	libname=`basename $1`
	install -m 755 $1 $2/$libname
	sonamelink=`${HOST_PREFIX}readelf -d $1 |grep 'Library soname:' |sed -e 's/.*\[\(.*\)\].*/\1/'`
	solink=`echo $libname | sed -e 's/\.so\..*/.so/'`
	ln -sf $libname $2/$sonamelink
	ln -sf $libname $2/$solink
}

oe_libinstall() {
	# Purpose: Install a library, in all its forms
	# Example
	#
	# oe_libinstall libltdl ${STAGING_LIBDIR}/
	# oe_libinstall -C src/libblah libblah ${D}/${libdir}/
	dir=""
	libtool=""
	silent=""
	require_static=""
	require_shared=""
	staging_install=""
	while [ "$#" -gt 0 ]; do
		case "$1" in
		-C)
			shift
			dir="$1"
			;;
		-s)
			silent=1
			;;
		-a)
			require_static=1
			;;
		-so)
			require_shared=1
			;;
		-*)
			bbfatal "oe_libinstall: unknown option: $1"
			;;
		*)
			break;
			;;
		esac
		shift
	done

	libname="$1"
	shift
	destpath="$1"
	if [ -z "$destpath" ]; then
		bbfatal "oe_libinstall: no destination path specified"
	fi
	if echo "$destpath/" | egrep '^${STAGING_LIBDIR}/' >/dev/null
	then
		staging_install=1
	fi

	__runcmd () {
		if [ -z "$silent" ]; then
			echo >&2 "oe_libinstall: $*"
		fi
		$*
	}

	if [ -z "$dir" ]; then
		dir=`pwd`
	fi

	dotlai=$libname.lai

	# Sanity check that the libname.lai is unique
	number_of_files=`(cd $dir; find . -name "$dotlai") | wc -l`
	if [ $number_of_files -gt 1 ]; then
		bbfatal "oe_libinstall: $dotlai is not unique in $dir"
	fi


	dir=$dir`(cd $dir;find . -name "$dotlai") | sed "s/^\.//;s/\/$dotlai\$//;q"`
	olddir=`pwd`
	__runcmd cd $dir

	lafile=$libname.la

	# If such file doesn't exist, try to cut version suffix
	if [ ! -f "$lafile" ]; then
		libname1=`echo "$libname" | sed 's/-[0-9.]*$//'`
		lafile1=$libname.la
		if [ -f "$lafile1" ]; then
			libname=$libname1
			lafile=$lafile1
		fi
	fi

	if [ -f "$lafile" ]; then
		# libtool archive
		eval `cat $lafile|grep "^library_names="`
		libtool=1
	else
		library_names="$libname.so* $libname.dll.a $libname.*.dylib"
	fi

	__runcmd install -d $destpath/
	dota=$libname.a
	if [ -f "$dota" -o -n "$require_static" ]; then
		rm -f $destpath/$dota
		__runcmd install -m 0644 $dota $destpath/
	fi
	if [ -f "$dotlai" -a -n "$libtool" ]; then
		rm -f $destpath/$libname.la
		__runcmd install -m 0644 $dotlai $destpath/$libname.la
	fi

	for name in $library_names; do
		files=`eval echo $name`
		for f in $files; do
			if [ ! -e "$f" ]; then
				if [ -n "$libtool" ]; then
					bbfatal "oe_libinstall: $dir/$f not found."
				fi
			elif [ -L "$f" ]; then
				__runcmd cp -P "$f" $destpath/
			elif [ ! -L "$f" ]; then
				libfile="$f"
				rm -f $destpath/$libfile
				__runcmd install -m 0755 $libfile $destpath/
			fi
		done
	done

	if [ -z "$libfile" ]; then
		if  [ -n "$require_shared" ]; then
			bbfatal "oe_libinstall: unable to locate shared library"
		fi
	elif [ -z "$libtool" ]; then
		# special case hack for non-libtool .so.#.#.# links
		baselibfile=`basename "$libfile"`
		if (echo $baselibfile | grep -qE '^lib.*\.so\.[0-9.]*$'); then
			sonamelink=`${HOST_PREFIX}readelf -d $libfile |grep 'Library soname:' |sed -e 's/.*\[\(.*\)\].*/\1/'`
			solink=`echo $baselibfile | sed -e 's/\.so\..*/.so/'`
			if [ -n "$sonamelink" -a x"$baselibfile" != x"$sonamelink" ]; then
				__runcmd ln -sf $baselibfile $destpath/$sonamelink
			fi
			__runcmd ln -sf $baselibfile $destpath/$solink
		fi
	fi

	__runcmd cd "$olddir"
}

oe_machinstall() {
	# Purpose: Install machine dependent files, if available
	#          If not available, check if there is a default
	#          If no default, just touch the destination
	# Example:
	#                $1  $2   $3         $4
	# oe_machinstall -m 0644 fstab ${D}/etc/fstab
	#
	# TODO: Check argument number?
	#
	filename=`basename $3`
	dirname=`dirname $3`

	for o in `echo ${OVERRIDES} | tr ':' ' '`; do
		if [ -e $dirname/$o/$filename ]; then
			bbnote $dirname/$o/$filename present, installing to $4
			install $1 $2 $dirname/$o/$filename $4
			return
		fi
	done
#	bbnote overrides specific file NOT present, trying default=$3...
	if [ -e $3 ]; then
		bbnote $3 present, installing to $4
		install $1 $2 $3 $4
	else
		bbnote $3 NOT present, touching empty $4
		touch $4
	fi
}

create_cmdline_wrapper () {
	# Create a wrapper script where commandline options are needed
	#
	# These are useful to work around relocation issues, by passing extra options 
	# to a program
	#
	# Usage: create_cmdline_wrapper FILENAME <extra-options>

	cmd=$1
	shift

	echo "Generating wrapper script for $cmd"

	mv $cmd $cmd.real
	cmdname=`basename $cmd`.real
	cat <<END >$cmd
#!/bin/bash
realpath=\`readlink -fn \$0\`
exec -a $cmd \`dirname \$realpath\`/$cmdname $@ "\$@"
END
	chmod +x $cmd
}

create_wrapper () {
	# Create a wrapper script where extra environment variables are needed
	#
	# These are useful to work around relocation issues, by setting environment
	# variables which point to paths in the filesystem.
	#
	# Usage: create_wrapper FILENAME [[VAR=VALUE]..]

	cmd=$1
	shift

	echo "Generating wrapper script for $cmd"

	mv $cmd $cmd.real
	cmdname=`basename $cmd`
	cat <<END >$cmd
#!/bin/bash
realpath=\`readlink -fn \$0\`
export $@
exec -a \`dirname \$realpath\`/$cmdname \`dirname \$realpath\`/$cmdname.real "\$@"
END
	chmod +x $cmd
}

def check_app_exists(app, d):
    app = d.expand(app)
    path = d.getVar('PATH', d, True)
    return bool(bb.utils.which(path, app))

def explode_deps(s):
    return bb.utils.explode_deps(s)

def base_set_filespath(path, d):
    filespath = []
    extrapaths = (d.getVar("FILESEXTRAPATHS", True) or "")
    # Don't prepend empty strings to the path list
    if extrapaths != "":
        path = extrapaths.split(":") + path
    # The ":" ensures we have an 'empty' override
    overrides = ((d.getVar("FILESOVERRIDES", True) or "") + ":").split(":")
    for p in path:
        if p != "": 
            for o in overrides:
                filespath.append(os.path.join(p, o))
    return ":".join(filespath)

def extend_variants(d, var, extend, delim=':'):
    """Return a string of all bb class extend variants for the given extend"""
    variants = []
    whole = d.getVar(var, True) or ""
    for ext in whole.split():
        eext = ext.split(delim)
        if len(eext) > 1 and eext[0] == extend:
            variants.append(eext[1])
    return " ".join(variants)

def multilib_pkg_extend(d, pkg):
    variants = (d.getVar("MULTILIB_VARIANTS", True) or "").split()
    if not variants:
        return pkg
    pkgs = pkg
    for v in variants:
        pkgs = pkgs + " " + v + "-" + pkg
    return pkgs

def all_multilib_tune_values(d, var, unique = True, need_split = True, delim = ' '):
    """Return a string of all ${var} in all multilib tune configuration"""
    values = []
    value = d.getVar(var, True) or ""
    if value != "":
        if need_split:
            for item in value.split(delim):
                values.append(item)
        else:
            values.append(value)
    variants = d.getVar("MULTILIB_VARIANTS", True) or ""
    for item in variants.split():
        localdata = bb.data.createCopy(d)
        overrides = localdata.getVar("OVERRIDES", False) + ":virtclass-multilib-" + item
        localdata.setVar("OVERRIDES", overrides)
        bb.data.update_data(localdata)
        value = localdata.getVar(var, True) or ""
        if value != "":
            if need_split:
                for item in value.split(delim):
                    values.append(item)
            else:
                values.append(value)
    if unique:
        #we do this to keep order as much as possible
        ret = []
        for value in values:
            if not value in ret:
                ret.append(value)
    else:
        ret = values
    return " ".join(ret)
