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#!/usr/bin/env python
# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
"""
class for handling .bb files
Reads a .bb file and obtains its metadata
"""
# Copyright (C) 2003, 2004 Chris Larson
# Copyright (C) 2003, 2004 Phil Blundell
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
from __future__ import absolute_import
import re, bb, os
import logging
import bb.build, bb.utils
from bb import data
from . import ConfHandler
from .. import resolve_file, ast, logger
from .ConfHandler import include, init
# For compatibility
bb.deprecate_import(__name__, "bb.parse", ["vars_from_file"])
__func_start_regexp__ = re.compile( r"(((?P<py>python)|(?P<fr>fakeroot))\s*)*(?P<func>[\w\.\-\+\{\}\$]+)?\s*\(\s*\)\s*{$" )
__inherit_regexp__ = re.compile( r"inherit\s+(.+)" )
__export_func_regexp__ = re.compile( r"EXPORT_FUNCTIONS\s+(.+)" )
__addtask_regexp__ = re.compile("addtask\s+(?P<func>\w+)\s*((before\s*(?P<before>((.*(?=after))|(.*))))|(after\s*(?P<after>((.*(?=before))|(.*)))))*")
__addhandler_regexp__ = re.compile( r"addhandler\s+(.+)" )
__def_regexp__ = re.compile( r"def\s+(\w+).*:" )
__python_func_regexp__ = re.compile( r"(\s+.*)|(^$)" )
__infunc__ = ""
__inpython__ = False
__body__ = []
__classname__ = ""
cached_statements = {}
# We need to indicate EOF to the feeder. This code is so messy that
# factoring it out to a close_parse_file method is out of question.
# We will use the IN_PYTHON_EOF as an indicator to just close the method
#
# The two parts using it are tightly integrated anyway
IN_PYTHON_EOF = -9999999999999
def supports(fn, d):
"""Return True if fn has a supported extension"""
return os.path.splitext(fn)[-1] in [".bb", ".bbclass", ".inc"]
def inherit(files, fn, lineno, d):
__inherit_cache = d.getVar('__inherit_cache') or []
files = d.expand(files).split()
for file in files:
if not os.path.isabs(file) and not file.endswith(".bbclass"):
file = os.path.join('classes', '%s.bbclass' % file)
if not file in __inherit_cache:
logger.log(logging.DEBUG -1, "BB %s:%d: inheriting %s", fn, lineno, file)
__inherit_cache.append( file )
data.setVar('__inherit_cache', __inherit_cache, d)
include(fn, file, lineno, d, "inherit")
__inherit_cache = d.getVar('__inherit_cache') or []
def get_statements(filename, absolute_filename, base_name):
global cached_statements
try:
return cached_statements[absolute_filename]
except KeyError:
file = open(absolute_filename, 'r')
statements = ast.StatementGroup()
lineno = 0
while True:
lineno = lineno + 1
s = file.readline()
if not s: break
s = s.rstrip()
feeder(lineno, s, filename, base_name, statements)
if __inpython__:
# add a blank line to close out any python definition
feeder(IN_PYTHON_EOF, "", filename, base_name, statements)
if filename.endswith(".bbclass") or filename.endswith(".inc"):
cached_statements[absolute_filename] = statements
return statements
def handle(fn, d, include):
global __func_start_regexp__, __inherit_regexp__, __export_func_regexp__, __addtask_regexp__, __addhandler_regexp__, __infunc__, __body__, __residue__, __classname__
__body__ = []
__infunc__ = ""
__classname__ = ""
__residue__ = []
if include == 0:
logger.debug(2, "BB %s: handle(data)", fn)
else:
logger.debug(2, "BB %s: handle(data, include)", fn)
base_name = os.path.basename(fn)
(root, ext) = os.path.splitext(base_name)
init(d)
if ext == ".bbclass":
__classname__ = root
__inherit_cache = d.getVar('__inherit_cache') or []
if not fn in __inherit_cache:
__inherit_cache.append(fn)
data.setVar('__inherit_cache', __inherit_cache, d)
if include != 0:
oldfile = d.getVar('FILE')
else:
oldfile = None
abs_fn = resolve_file(fn, d)
if include:
bb.parse.mark_dependency(d, abs_fn)
# actual loading
statements = get_statements(fn, abs_fn, base_name)
# DONE WITH PARSING... time to evaluate
if ext != ".bbclass":
data.setVar('FILE', abs_fn, d)
statements.eval(d)
if ext != ".bbclass" and include == 0:
return ast.multi_finalize(fn, d)
if oldfile:
d.setVar("FILE", oldfile)
# we have parsed the bb class now
if ext == ".bbclass" or ext == ".inc":
bb.methodpool.set_parsed_module(base_name)
return d
def feeder(lineno, s, fn, root, statements):
global __func_start_regexp__, __inherit_regexp__, __export_func_regexp__, __addtask_regexp__, __addhandler_regexp__, __def_regexp__, __python_func_regexp__, __inpython__, __infunc__, __body__, bb, __residue__, __classname__
if __infunc__:
if s == '}':
__body__.append('')
ast.handleMethod(statements, fn, lineno, __infunc__, __body__)
__infunc__ = ""
__body__ = []
else:
__body__.append(s)
return
if __inpython__:
m = __python_func_regexp__.match(s)
if m and lineno != IN_PYTHON_EOF:
__body__.append(s)
return
else:
ast.handlePythonMethod(statements, fn, lineno, __inpython__,
root, __body__)
__body__ = []
__inpython__ = False
if lineno == IN_PYTHON_EOF:
return
if s and s[0] == '#':
if len(__residue__) != 0 and __residue__[0][0] != "#":
bb.error("There is a comment on line %s of file %s (%s) which is in the middle of a multiline expression.\nBitbake used to ignore these but no longer does so, please fix your metadata as errors are likely as a result of this change." % (lineno, fn, s))
if s and s[-1] == '\\':
__residue__.append(s[:-1])
return
s = "".join(__residue__) + s
__residue__ = []
# Skip empty lines
if s == '':
return
# Skip comments
if s[0] == '#':
return
m = __func_start_regexp__.match(s)
if m:
__infunc__ = m.group("func") or "__anonymous"
ast.handleMethodFlags(statements, fn, lineno, __infunc__, m)
return
m = __def_regexp__.match(s)
if m:
__body__.append(s)
__inpython__ = m.group(1)
return
m = __export_func_regexp__.match(s)
if m:
ast.handleExportFuncs(statements, fn, lineno, m, __classname__)
return
m = __addtask_regexp__.match(s)
if m:
ast.handleAddTask(statements, fn, lineno, m)
return
m = __addhandler_regexp__.match(s)
if m:
ast.handleBBHandlers(statements, fn, lineno, m)
return
m = __inherit_regexp__.match(s)
if m:
ast.handleInherit(statements, fn, lineno, m)
return
return ConfHandler.feeder(lineno, s, fn, statements)
# Add us to the handlers list
from .. import handlers
handlers.append({'supports': supports, 'handle': handle, 'init': init})
del handlers
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