3 files changed, 489 insertions, 0 deletions

diff --git a/bitbake/lib/bb/parse/parse_py/BBHandler.py b/bitbake/lib/bb/parse/parse_py/BBHandler.py
new file mode 100644
index 0000000000..408890e48a
--- /dev/null
+++ b/bitbake/lib/bb/parse/parse_py/BBHandler.py
@@ -0,0 +1,267 @@
+#!/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*{$" )
+__inherit_regexp__       = re.compile( r"inherit\s+(.+)" )
+__export_func_regexp__   = re.compile( r"EXPORT_FUNCTIONS\s+(.+)" )
+__addtask_regexp__       = re.compile("addtask\s+(?P<func>\w+)\s*((before\s*(?P<before>((.*(?=after))|(.*))))|(after\s*(?P<after>((.*(?=before))|(.*)))))*")
+__deltask_regexp__       = re.compile("deltask\s+(?P<func>\w+)")
+__addhandler_regexp__    = re.compile( r"addhandler\s+(.+)" )
+__def_regexp__           = re.compile( r"def\s+(\w+).*:" )
+__python_func_regexp__   = re.compile( r"(\s+.*)|(^$)" )
+
+
+__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 os.path.isabs(file):
+            dname = os.path.dirname(fn)
+            bbpath = "%s:%s" % (dname, d.getVar("BBPATH", True))
+            abs_fn, attempts = bb.utils.which(bbpath, file, history=True)
+            for af in attempts:
+                if af != abs_fn:
+                    bb.parse.mark_dependency(d, af)
+            if abs_fn:
+                file = abs_fn
+
+        if not file in __inherit_cache:
+            logger.log(logging.DEBUG -1, "BB %s:%d: inheriting %s", fn, lineno, file)
+            __inherit_cache.append( file )
+            d.setVar('__inherit_cache', __inherit_cache)
+            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)
+        file.close()
+        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)
+            d.setVar('__inherit_cache', __inherit_cache)
+
+    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":
+        d.setVar('FILE', abs_fn)
+
+    try:
+        statements.eval(d)
+    except bb.parse.SkipPackage:
+        bb.data.setVar("__SKIPPED", True, d)
+        if include == 0:
+            return { "" : d }
+
+    if ext != ".bbclass" and include == 0:
+        return ast.multi_finalize(fn, d)
+
+    if oldfile:
+        d.setVar("FILE", oldfile)
+
+    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.fatal("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 len(__residue__) != 0 and __residue__[0][0] == "#" and (not s or s[0] != "#"):
+        bb.fatal("There is a confusing multiline, partially commented expression on line %s of file %s (%s).\nPlease clarify whether this is all a comment or should be parsed." % (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 = __deltask_regexp__.match(s)
+    if m:
+        ast.handleDelTask(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
diff --git a/bitbake/lib/bb/parse/parse_py/ConfHandler.py b/bitbake/lib/bb/parse/parse_py/ConfHandler.py
new file mode 100644
index 0000000000..978ebe4608
--- /dev/null
+++ b/bitbake/lib/bb/parse/parse_py/ConfHandler.py
@@ -0,0 +1,189 @@
+#!/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 configuration data files
+
+   Reads a .conf 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.
+
+import re, os
+import logging
+import bb.utils
+from bb.parse import ParseError, resolve_file, ast, logger
+
+__config_regexp__  = re.compile( r"""
+    ^
+    (?P<exp>export\s*)?
+    (?P<var>[a-zA-Z0-9\-~_+.${}/]+?)
+    (\[(?P<flag>[a-zA-Z0-9\-_+.]+)\])?
+
+    \s* (
+        (?P<colon>:=) |
+        (?P<lazyques>\?\?=) |
+        (?P<ques>\?=) |
+        (?P<append>\+=) |
+        (?P<prepend>=\+) |
+        (?P<predot>=\.) |
+        (?P<postdot>\.=) |
+        =
+    ) \s*
+
+    (?!'[^']*'[^']*'$)
+    (?!\"[^\"]*\"[^\"]*\"$)
+    (?P<apo>['\"])
+    (?P<value>.*)
+    (?P=apo)
+    $
+    """, re.X)
+__include_regexp__ = re.compile( r"include\s+(.+)" )
+__require_regexp__ = re.compile( r"require\s+(.+)" )
+__export_regexp__ = re.compile( r"export\s+([a-zA-Z0-9\-_+.${}/]+)$" )
+
+def init(data):
+    topdir = data.getVar('TOPDIR')
+    if not topdir:
+        data.setVar('TOPDIR', os.getcwd())
+
+
+def supports(fn, d):
+    return fn[-5:] == ".conf"
+
+def include(oldfn, fn, lineno, data, error_out):
+    """
+    error_out: A string indicating the verb (e.g. "include", "inherit") to be
+    used in a ParseError that will be raised if the file to be included could
+    not be included. Specify False to avoid raising an error in this case.
+    """
+    if oldfn == fn: # prevent infinite recursion
+        return None
+
+    import bb
+    fn = data.expand(fn)
+    oldfn = data.expand(oldfn)
+
+    if not os.path.isabs(fn):
+        dname = os.path.dirname(oldfn)
+        bbpath = "%s:%s" % (dname, data.getVar("BBPATH", True))
+        abs_fn, attempts = bb.utils.which(bbpath, fn, history=True)
+        if abs_fn and bb.parse.check_dependency(data, abs_fn):
+            bb.warn("Duplicate inclusion for %s in %s" % (abs_fn, data.getVar('FILE', True)))
+        for af in attempts:
+            bb.parse.mark_dependency(data, af)
+        if abs_fn:
+            fn = abs_fn
+    elif bb.parse.check_dependency(data, fn):
+        bb.warn("Duplicate inclusion for %s in %s" % (fn, data.getVar('FILE', True)))
+
+    from bb.parse import handle
+    try:
+        ret = handle(fn, data, True)
+    except (IOError, OSError):
+        if error_out:
+            raise ParseError("Could not %(error_out)s file %(fn)s" % vars(), oldfn, lineno)
+        logger.debug(2, "CONF file '%s' not found", fn)
+        bb.parse.mark_dependency(data, fn)
+
+# We have an issue where a UI might want to enforce particular settings such as
+# an empty DISTRO variable. If configuration files do something like assigning
+# a weak default, it turns out to be very difficult to filter out these changes,
+# particularly when the weak default might appear half way though parsing a chain 
+# of configuration files. We therefore let the UIs hook into configuration file
+# parsing. This turns out to be a hard problem to solve any other way.
+confFilters = []
+
+def handle(fn, data, include):
+    init(data)
+
+    if include == 0:
+        oldfile = None
+    else:
+        oldfile = data.getVar('FILE')
+
+    abs_fn = resolve_file(fn, data)
+    f = open(abs_fn, 'r')
+
+    if include:
+        bb.parse.mark_dependency(data, abs_fn)
+
+    statements = ast.StatementGroup()
+    lineno = 0
+    while True:
+        lineno = lineno + 1
+        s = f.readline()
+        if not s:
+            break
+        w = s.strip()
+        # skip empty lines
+        if not w:
+            continue
+        s = s.rstrip()
+        while s[-1] == '\\':
+            s2 = f.readline().strip()
+            lineno = lineno + 1
+            if (not s2 or s2 and s2[0] != "#") and s[0] == "#" :
+                bb.fatal("There is a confusing multiline, partially commented expression on line %s of file %s (%s).\nPlease clarify whether this is all a comment or should be parsed." % (lineno, fn, s))
+            s = s[:-1] + s2
+        # skip comments
+        if s[0] == '#':
+            continue
+        feeder(lineno, s, abs_fn, statements)
+
+    # DONE WITH PARSING... time to evaluate
+    data.setVar('FILE', abs_fn)
+    statements.eval(data)
+    if oldfile:
+        data.setVar('FILE', oldfile)
+
+    f.close()
+
+    for f in confFilters:
+        f(fn, data)
+
+    return data
+
+def feeder(lineno, s, fn, statements):
+    m = __config_regexp__.match(s)
+    if m:
+        groupd = m.groupdict()
+        ast.handleData(statements, fn, lineno, groupd)
+        return
+
+    m = __include_regexp__.match(s)
+    if m:
+        ast.handleInclude(statements, fn, lineno, m, False)
+        return
+
+    m = __require_regexp__.match(s)
+    if m:
+        ast.handleInclude(statements, fn, lineno, m, True)
+        return
+
+    m = __export_regexp__.match(s)
+    if m:
+        ast.handleExport(statements, fn, lineno, m)
+        return
+
+    raise ParseError("unparsed line: '%s'" % s, fn, lineno);
+
+# Add us to the handlers list
+from bb.parse import handlers
+handlers.append({'supports': supports, 'handle': handle, 'init': init})
+del handlers
diff --git a/bitbake/lib/bb/parse/parse_py/__init__.py b/bitbake/lib/bb/parse/parse_py/__init__.py
new file mode 100644
index 0000000000..3e658d0de9
--- /dev/null
+++ b/bitbake/lib/bb/parse/parse_py/__init__.py
@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+"""
+BitBake Parsers
+
+File parsers for the BitBake build tools.
+
+"""
+
+# 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.
+#
+# Based on functions from the base bb module, Copyright 2003 Holger Schurig
+
+from __future__ import absolute_import
+from . import ConfHandler
+from . import BBHandler
+
+__version__ = '1.0'