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authorKhem Raj <raj.khem@gmail.com>2011-02-23 10:48:51 -0800
committerKhem Raj <raj.khem@gmail.com>2011-02-23 10:48:51 -0800
commit951cbf3f65f347c7a7bbcae193218f9187a15fbf (patch)
tree96e9c74551e6931804992f8f49af05f732eb0fff /bitbake/lib/bb/data.py
parentadbaae2179a6c3746e53f7fbb2ca0939e85a7ea9 (diff)
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bitbake: Remove in-tree version
Bitbake should be used by checking it out from its own repo Signed-off-by: Khem Raj <raj.khem@gmail.com>
Diffstat (limited to 'bitbake/lib/bb/data.py')
-rw-r--r--bitbake/lib/bb/data.py338
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diff --git a/bitbake/lib/bb/data.py b/bitbake/lib/bb/data.py
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-# 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
-
-_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):
- """Inherit variables from the environment."""
- exportlist = bb.utils.preserved_envvars_exported()
- for s in os.environ.keys():
- try:
- setVar(s, os.environ[s], 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, 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 export_vars(d):
- keys = (key for key in d.keys() if d.getVarFlag(key, "export"))
- ret = {}
- for k in keys:
- try:
- v = d.getVar(k, True)
- if v:
- ret[k] = v
- except (KeyboardInterrupt, bb.build.FuncFailed):
- raise
- except Exception, exc:
- pass
- return ret
-
-def export_envvars(v, d):
- for s in os.environ.keys():
- if s not in v:
- v[s] = os.environ[s]
- return v
-
-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().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().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()
- try:
- if d.getVarFlag(key, "func"):
- if d.getVarFlag(key, "python"):
- parsedvar = d.expandWithRefs(d.getVar(key, False), key)
- parser = bb.codeparser.PythonParser()
- parser.parse_python(parsedvar.value)
- deps = deps | parser.references
- else:
- parsedvar = d.expandWithRefs(d.getVar(key, False), key)
- parser = bb.codeparser.ShellParser()
- parser.parse_shell(parsedvar.value)
- deps = deps | shelldeps
- 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((d.getVarFlag(key, "vardeps", True) 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