path: root/bitbake/lib/bb/__init__.py

#!/usr/bin/python
# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
"""
BitBake Build System Python Library

Copyright (C) 2003  Holger Schurig
Copyright (C) 2003, 2004  Chris Larson

Based on Gentoo's portage.py.

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.

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.
"""

__version__ = "1.3.2.1"

__all__ = [

    "debug",
    "note",
    "error",
    "fatal",

    "mkdirhier",
    "movefile",

    "tokenize",
    "evaluate",
    "flatten",
    "relparse",
    "ververify",
    "isjustname",
    "isspecific",
    "pkgsplit",
    "catpkgsplit",
    "vercmp",
    "pkgcmp",
    "dep_parenreduce",
    "dep_opconvert",
    "digraph",

# fetch
    "decodeurl",
    "encodeurl",

# modules
    "parse",
    "data",
    "event",
    "build",
    "fetch",
    "manifest"
 ]

whitespace = '\t\n\x0b\x0c\r '
lowercase = 'abcdefghijklmnopqrstuvwxyz'

import sys, os, types, re, string

#projectdir = os.path.dirname(os.path.dirname(os.path.abspath(sys.argv[0])))
projectdir = os.getcwd()

debug_level = 0

if "BBDEBUG" in os.environ:
    level = int(os.environ["BBDEBUG"])
    if level:
        debug_level = level
    else:
        debug_level = 0

class VarExpandError(Exception):
    pass

class MalformedUrl(Exception):
    """Exception raised when encountering an invalid url"""


#######################################################################
#######################################################################
#
# SECTION: Debug
#
# PURPOSE: little functions to make yourself known
#
#######################################################################
#######################################################################

debug_prepend = ''


def debug(lvl, *args):
    if debug_level >= lvl:
        print debug_prepend + 'DEBUG:', ''.join(args)

def note(*args):
    print debug_prepend + 'NOTE:', ''.join(args)

def error(*args):
    print debug_prepend + 'ERROR:', ''.join(args)

def fatal(*args):
    print debug_prepend + 'ERROR:', ''.join(args)
    sys.exit(1)


#######################################################################
#######################################################################
#
# SECTION: File
#
# PURPOSE: Basic file and directory tree related functions
#
#######################################################################
#######################################################################

def mkdirhier(dir):
    """Create a directory like 'mkdir -p', but does not complain if
    directory already exists like os.makedirs
    """

    debug(3, "mkdirhier(%s)" % dir)
    try:
        os.makedirs(dir)
        debug(2, "created " + dir)
    except OSError, e:
        if e.errno != 17: raise e


#######################################################################

import stat

def movefile(src,dest,newmtime=None,sstat=None):
    """Moves a file from src to dest, preserving all permissions and
    attributes; mtime will be preserved even when moving across
    filesystems.  Returns true on success and false on failure. Move is
    atomic.
    """

    #print "movefile("+src+","+dest+","+str(newmtime)+","+str(sstat)+")"
    try:
        if not sstat:
            sstat=os.lstat(src)
    except Exception, e:
        print "!!! Stating source file failed... movefile()"
        print "!!!",e
        return None

    destexists=1
    try:
        dstat=os.lstat(dest)
    except:
        dstat=os.lstat(os.path.dirname(dest))
        destexists=0

    if destexists:
        if