If the vardeps flag is not None, we now silence the warnings about non-literal usage for that variable. (Bitbake rev: e724b9f417d1baf898f5afc6376c73c1a2ad8db9) Signed-off-by: Christopher Larson <chris_larson@mentor.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
339 lines
11 KiB
Python
339 lines
11 KiB
Python
# ex:ts=4:sw=4:sts=4:et
|
|
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
|
|
"""
|
|
BitBake 'Data' implementations
|
|
|
|
Functions for interacting with the data structure used by the
|
|
BitBake build tools.
|
|
|
|
The expandData and update_data are the most expensive
|
|
operations. At night the cookie monster came by and
|
|
suggested 'give me cookies on setting the variables and
|
|
things will work out'. Taking this suggestion into account
|
|
applying the skills from the not yet passed 'Entwurf und
|
|
Analyse von Algorithmen' lecture and the cookie
|
|
monster seems to be right. We will track setVar more carefully
|
|
to have faster update_data and expandKeys operations.
|
|
|
|
This is a treade-off between speed and memory again but
|
|
the speed is more critical here.
|
|
"""
|
|
|
|
# Copyright (C) 2003, 2004 Chris Larson
|
|
# Copyright (C) 2005 Holger Hans Peter Freyther
|
|
#
|
|
# 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
|
|
|
|
import sys, os, re
|
|
if sys.argv[0][-5:] == "pydoc":
|
|
path = os.path.dirname(os.path.dirname(sys.argv[1]))
|
|
else:
|
|
path = os.path.dirname(os.path.dirname(sys.argv[0]))
|
|
sys.path.insert(0, path)
|
|
from itertools import groupby
|
|
|
|
from bb import data_smart
|
|
from bb import codeparser
|
|
import bb
|
|
|
|
logger = data_smart.logger
|
|
_dict_type = data_smart.DataSmart
|
|
|
|
def init():
|
|
"""Return a new object representing the Bitbake data"""
|
|
return _dict_type()
|
|
|
|
def init_db(parent = None):
|
|
"""Return a new object representing the Bitbake data,
|
|
optionally based on an existing object"""
|
|
if parent:
|
|
return parent.createCopy()
|
|
else:
|
|
return _dict_type()
|
|
|
|
def createCopy(source):
|
|
"""Link the source set to the destination
|
|
If one does not find the value in the destination set,
|
|
search will go on to the source set to get the value.
|
|
Value from source are copy-on-write. i.e. any try to
|
|
modify one of them will end up putting the modified value
|
|
in the destination set.
|
|
"""
|
|
return source.createCopy()
|
|
|
|
def initVar(var, d):
|
|
"""Non-destructive var init for data structure"""
|
|
d.initVar(var)
|
|
|
|
|
|
def setVar(var, value, d):
|
|
"""Set a variable to a given value"""
|
|
d.setVar(var, value)
|
|
|
|
|
|
def getVar(var, d, exp = 0):
|
|
"""Gets the value of a variable"""
|
|
return d.getVar(var, exp)
|
|
|
|
|
|
def renameVar(key, newkey, d):
|
|
"""Renames a variable from key to newkey"""
|
|
d.renameVar(key, newkey)
|
|
|
|
def delVar(var, d):
|
|
"""Removes a variable from the data set"""
|
|
d.delVar(var)
|
|
|
|
def setVarFlag(var, flag, flagvalue, d):
|
|
"""Set a flag for a given variable to a given value"""
|
|
d.setVarFlag(var, flag, flagvalue)
|
|
|
|
def getVarFlag(var, flag, d):
|
|
"""Gets given flag from given var"""
|
|
return d.getVarFlag(var, flag)
|
|
|
|
def delVarFlag(var, flag, d):
|
|
"""Removes a given flag from the variable's flags"""
|
|
d.delVarFlag(var, flag)
|
|
|
|
def setVarFlags(var, flags, d):
|
|
"""Set the flags for a given variable
|
|
|
|
Note:
|
|
setVarFlags will not clear previous
|
|
flags. Think of this method as
|
|
addVarFlags
|
|
"""
|
|
d.setVarFlags(var, flags)
|
|
|
|
def getVarFlags(var, d):
|
|
"""Gets a variable's flags"""
|
|
return d.getVarFlags(var)
|
|
|
|
def delVarFlags(var, d):
|
|
"""Removes a variable's flags"""
|
|
d.delVarFlags(var)
|
|
|
|
def keys(d):
|
|
"""Return a list of keys in d"""
|
|
return d.keys()
|
|
|
|
|
|
__expand_var_regexp__ = re.compile(r"\${[^{}]+}")
|
|
__expand_python_regexp__ = re.compile(r"\${@.+?}")
|
|
|
|
def expand(s, d, varname = None):
|
|
"""Variable expansion using the data store"""
|
|
return d.expand(s, varname)
|
|
|
|
def expandKeys(alterdata, readdata = None):
|
|
if readdata == None:
|
|
readdata = alterdata
|
|
|
|
todolist = {}
|
|
for key in keys(alterdata):
|
|
if not '${' in key:
|
|
continue
|
|
|
|
ekey = expand(key, readdata)
|
|
if key == ekey:
|
|
continue
|
|
todolist[key] = ekey
|
|
|
|
# These two for loops are split for performance to maximise the
|
|
# usefulness of the expand cache
|
|
|
|
for key in todolist:
|
|
ekey = todolist[key]
|
|
renameVar(key, ekey, alterdata)
|
|
|
|
def inheritFromOS(d, savedenv, permitted):
|
|
"""Inherit variables from the initial environment."""
|
|
exportlist = bb.utils.preserved_envvars_exported()
|
|
for s in savedenv.keys():
|
|
if s in permitted:
|
|
try:
|
|
setVar(s, getVar(s, savedenv, True), d)
|
|
if s in exportlist:
|
|
setVarFlag(s, "export", True, d)
|
|
except TypeError:
|
|
pass
|
|
|
|
def emit_var(var, o=sys.__stdout__, d = init(), all=False):
|
|
"""Emit a variable to be sourced by a shell."""
|
|
if getVarFlag(var, "python", d):
|
|
return 0
|
|
|
|
export = getVarFlag(var, "export", d)
|
|
unexport = getVarFlag(var, "unexport", d)
|
|
func = getVarFlag(var, "func", d)
|
|
if not all and not export and not unexport and not func:
|
|
return 0
|
|
|
|
try:
|
|
if all:
|
|
oval = getVar(var, d, 0)
|
|
val = getVar(var, d, 1)
|
|
except (KeyboardInterrupt, bb.build.FuncFailed):
|
|
raise
|
|
except Exception as exc:
|
|
o.write('# expansion of %s threw %s: %s\n' % (var, exc.__class__.__name__, str(exc)))
|
|
return 0
|
|
|
|
if all:
|
|
commentVal = re.sub('\n', '\n#', str(oval))
|
|
o.write('# %s=%s\n' % (var, commentVal))
|
|
|
|
if (var.find("-") != -1 or var.find(".") != -1 or var.find('{') != -1 or var.find('}') != -1 or var.find('+') != -1) and not all:
|
|
return 0
|
|
|
|
varExpanded = expand(var, d)
|
|
|
|
if unexport:
|
|
o.write('unset %s\n' % varExpanded)
|
|
return 0
|
|
|
|
if not val:
|
|
return 0
|
|
|
|
val = str(val)
|
|
|
|
if func:
|
|
# NOTE: should probably check for unbalanced {} within the var
|
|
o.write("%s() {\n%s\n}\n" % (varExpanded, val))
|
|
return 1
|
|
|
|
if export:
|
|
o.write('export ')
|
|
|
|
# if we're going to output this within doublequotes,
|
|
# to a shell, we need to escape the quotes in the var
|
|
alter = re.sub('"', '\\"', val.strip())
|
|
alter = re.sub('\n', ' \\\n', alter)
|
|
o.write('%s="%s"\n' % (varExpanded, alter))
|
|
return 0
|
|
|
|
def emit_env(o=sys.__stdout__, d = init(), all=False):
|
|
"""Emits all items in the data store in a format such that it can be sourced by a shell."""
|
|
|
|
isfunc = lambda key: bool(d.getVarFlag(key, "func"))
|
|
keys = sorted((key for key in d.keys() if not key.startswith("__")), key=isfunc)
|
|
grouped = groupby(keys, isfunc)
|
|
for isfunc, keys in grouped:
|
|
for key in keys:
|
|
emit_var(key, o, d, all and not isfunc) and o.write('\n')
|
|
|
|
def exported_keys(d):
|
|
return (key for key in d.keys() if not key.startswith('__') and
|
|
d.getVarFlag(key, 'export') and
|
|
not d.getVarFlag(key, 'unexport'))
|
|
|
|
def exported_vars(d):
|
|
for key in exported_keys(d):
|
|
try:
|
|
value = d.getVar(key, True)
|
|
except Exception:
|
|
pass
|
|
|
|
if value is not None:
|
|
yield key, str(value)
|
|
|
|
def emit_func(func, o=sys.__stdout__, d = init()):
|
|
"""Emits all items in the data store in a format such that it can be sourced by a shell."""
|
|
|
|
keys = (key for key in d.keys() if not key.startswith("__") and not d.getVarFlag(key, "func"))
|
|
for key in keys:
|
|
emit_var(key, o, d, False) and o.write('\n')
|
|
|
|
emit_var(func, o, d, False) and o.write('\n')
|
|
newdeps = bb.codeparser.ShellParser(func, logger).parse_shell(d.getVar(func, True))
|
|
seen = set()
|
|
while newdeps:
|
|
deps = newdeps
|
|
seen |= deps
|
|
newdeps = set()
|
|
for dep in deps:
|
|
if bb.data.getVarFlag(dep, "func", d):
|
|
emit_var(dep, o, d, False) and o.write('\n')
|
|
newdeps |= bb.codeparser.ShellParser(dep, logger).parse_shell(d.getVar(dep, True))
|
|
newdeps -= seen
|
|
|
|
def update_data(d):
|
|
"""Performs final steps upon the datastore, including application of overrides"""
|
|
d.finalize()
|
|
|
|
def build_dependencies(key, keys, shelldeps, d):
|
|
deps = set()
|
|
vardeps = d.getVarFlag(key, "vardeps", True)
|
|
try:
|
|
if d.getVarFlag(key, "func"):
|
|
if d.getVarFlag(key, "python"):
|
|
parsedvar = d.expandWithRefs(d.getVar(key, False), key)
|
|
parser = bb.codeparser.PythonParser(key, logger)
|
|
parser.parse_python(parsedvar.value)
|
|
deps = deps | parser.references
|
|
else:
|
|
parsedvar = d.expandWithRefs(d.getVar(key, False), key)
|
|
parser = bb.codeparser.ShellParser(key, logger)
|
|
parser.parse_shell(parsedvar.value)
|
|
deps = deps | shelldeps
|
|
if vardeps is None:
|
|
parser.log.flush()
|
|
deps = deps | parsedvar.references
|
|
deps = deps | (keys & parser.execs) | (keys & parsedvar.execs)
|
|
else:
|
|
parser = d.expandWithRefs(d.getVar(key, False), key)
|
|
deps |= parser.references
|
|
deps = deps | (keys & parser.execs)
|
|
deps |= set((vardeps or "").split())
|
|
deps -= set((d.getVarFlag(key, "vardepsexclude", True) or "").split())
|
|
except:
|
|
bb.note("Error expanding variable %s" % key)
|
|
raise
|
|
return deps
|
|
#bb.note("Variable %s references %s and calls %s" % (key, str(deps), str(execs)))
|
|
#d.setVarFlag(key, "vardeps", deps)
|
|
|
|
def generate_dependencies(d):
|
|
|
|
keys = set(key for key in d.keys() if not key.startswith("__"))
|
|
shelldeps = set(key for key in keys if d.getVarFlag(key, "export") and not d.getVarFlag(key, "unexport"))
|
|
|
|
deps = {}
|
|
|
|
tasklist = bb.data.getVar('__BBTASKS', d) or []
|
|
for task in tasklist:
|
|
deps[task] = build_dependencies(task, keys, shelldeps, d)
|
|
newdeps = deps[task]
|
|
seen = set()
|
|
while newdeps:
|
|
nextdeps = newdeps
|
|
seen |= nextdeps
|
|
newdeps = set()
|
|
for dep in nextdeps:
|
|
if dep not in deps:
|
|
deps[dep] = build_dependencies(dep, keys, shelldeps, d)
|
|
newdeps |= deps[dep]
|
|
newdeps -= seen
|
|
#print "For %s: %s" % (task, str(taskdeps[task]))
|
|
return tasklist, deps
|
|
|
|
def inherits_class(klass, d):
|
|
val = getVar('__inherit_cache', d) or []
|
|
if os.path.join('classes', '%s.bbclass' % klass) in val:
|
|
return True
|
|
return False
|