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