From c30eddb243e7e65f67f656e62848a033cf6f2e5c Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Tue, 30 Sep 2008 15:08:33 +0000 Subject: Add bitbake-dev to allow ease of testing and development of bitbake trunk git-svn-id: https://svn.o-hand.com/repos/poky/trunk@5337 311d38ba-8fff-0310-9ca6-ca027cbcb966 --- bitbake-dev/lib/bb/parse/parse_py/ConfHandler.py | 228 +++++++++++++++++++++++ 1 file changed, 228 insertions(+) create mode 100644 bitbake-dev/lib/bb/parse/parse_py/ConfHandler.py (limited to 'bitbake-dev/lib/bb/parse/parse_py/ConfHandler.py') diff --git a/bitbake-dev/lib/bb/parse/parse_py/ConfHandler.py b/bitbake-dev/lib/bb/parse/parse_py/ConfHandler.py new file mode 100644 index 000000000..e6488bbe1 --- /dev/null +++ b/bitbake-dev/lib/bb/parse/parse_py/ConfHandler.py @@ -0,0 +1,228 @@ +#!/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, bb.data, os, sys +from bb.parse import ParseError + +#__config_regexp__ = re.compile( r"(?Pexport\s*)?(?P[a-zA-Z0-9\-_+.${}]+)\s*(?P:)?(?P\?)?=\s*(?P['\"]?)(?P.*)(?P=apo)$") +__config_regexp__ = re.compile( r"(?Pexport\s*)?(?P[a-zA-Z0-9\-_+.${}/]+)(\[(?P[a-zA-Z0-9\-_+.]+)\])?\s*((?P:=)|(?P\?=)|(?P\+=)|(?P=\+)|(?P=\.)|(?P\.=)|=)\s*(?P['\"]?)(?P.*)(?P=apo)$") +__include_regexp__ = re.compile( r"include\s+(.+)" ) +__require_regexp__ = re.compile( r"require\s+(.+)" ) +__export_regexp__ = re.compile( r"export\s+(.+)" ) + +def init(data): + if not bb.data.getVar('TOPDIR', data): + bb.data.setVar('TOPDIR', os.getcwd(), data) + if not bb.data.getVar('BBPATH', data): + bb.data.setVar('BBPATH', os.path.join(sys.prefix, 'share', 'bitbake'), data) + +def supports(fn, d): + return localpath(fn, d)[-5:] == ".conf" + +def localpath(fn, d): + if os.path.exists(fn): + return fn + + if "://" not in fn: + return fn + + localfn = None + try: + localfn = bb.fetch.localpath(fn, d, False) + except bb.MalformedUrl: + pass + + if not localfn: + return fn + return localfn + +def obtain(fn, data): + import sys, bb + fn = bb.data.expand(fn, data) + localfn = bb.data.expand(localpath(fn, data), data) + + if localfn != fn: + dldir = bb.data.getVar('DL_DIR', data, 1) + if not dldir: + bb.msg.debug(1, bb.msg.domain.Parsing, "obtain: DL_DIR not defined") + return localfn + bb.mkdirhier(dldir) + try: + bb.fetch.init([fn], data) + except bb.fetch.NoMethodError: + (type, value, traceback) = sys.exc_info() + bb.msg.debug(1, bb.msg.domain.Parsing, "obtain: no method: %s" % value) + return localfn + + try: + bb.fetch.go(data) + except bb.fetch.MissingParameterError: + (type, value, traceback) = sys.exc_info() + bb.msg.debug(1, bb.msg.domain.Parsing, "obtain: missing parameters: %s" % value) + return localfn + except bb.fetch.FetchError: + (type, value, traceback) = sys.exc_info() + bb.msg.debug(1, bb.msg.domain.Parsing, "obtain: failed: %s" % value) + return localfn + return localfn + + +def include(oldfn, fn, data, error_out): + """ + + error_out If True a ParseError will be reaised if the to be included + """ + if oldfn == fn: # prevent infinate recursion + return None + + import bb + fn = bb.data.expand(fn, data) + oldfn = bb.data.expand(oldfn, data) + + from bb.parse import handle + try: + ret = handle(fn, data, True) + except IOError: + if error_out: + raise ParseError("Could not %(error_out)s file %(fn)s" % vars() ) + bb.msg.debug(2, bb.msg.domain.Parsing, "CONF file '%s' not found" % fn) + +def handle(fn, data, include = 0): + if include: + inc_string = "including" + else: + inc_string = "reading" + init(data) + + if include == 0: + bb.data.inheritFromOS(data) + oldfile = None + else: + oldfile = bb.data.getVar('FILE', data) + + fn = obtain(fn, data) + if not os.path.isabs(fn): + f = None + bbpath = bb.data.getVar("BBPATH", data, 1) or [] + for p in bbpath.split(":"): + currname = os.path.join(p, fn) + if os.access(currname, os.R_OK): + f = open(currname, 'r') + abs_fn = currname + bb.msg.debug(2, bb.msg.domain.Parsing, "CONF %s %s" % (inc_string, currname)) + break + if f is None: + raise IOError("file '%s' not found" % fn) + else: + f = open(fn,'r') + bb.msg.debug(1, bb.msg.domain.Parsing, "CONF %s %s" % (inc_string,fn)) + abs_fn = fn + + if include: + bb.parse.mark_dependency(data, abs_fn) + + lineno = 0 + bb.data.setVar('FILE', fn, data) + while 1: + lineno = lineno + 1 + s = f.readline() + if not s: break + w = s.strip() + if not w: continue # skip empty lines + s = s.rstrip() + if s[0] == '#': continue # skip comments + while s[-1] == '\\': + s2 = f.readline()[:-1].strip() + lineno = lineno + 1 + s = s[:-1] + s2 + feeder(lineno, s, fn, data) + + if oldfile: + bb.data.setVar('FILE', oldfile, data) + return data + +def feeder(lineno, s, fn, data): + def getFunc(groupd, key, data): + if 'flag' in groupd and groupd['flag'] != None: + return bb.data.getVarFlag(key, groupd['flag'], data) + else: + return bb.data.getVar(key, data) + + m = __config_regexp__.match(s) + if m: + groupd = m.groupdict() + key = groupd["var"] + if "exp" in groupd and groupd["exp"] != None: + bb.data.setVarFlag(key, "export", 1, data) + if "ques" in groupd and groupd["ques"] != None: + val = getFunc(groupd, key, data) + if val == None: + val = groupd["value"] + elif "colon" in groupd and groupd["colon"] != None: + e = data.createCopy() + bb.data.update_data(e) + val = bb.data.expand(groupd["value"], e) + elif "append" in groupd and groupd["append"] != None: + val = "%s %s" % ((getFunc(groupd, key, data) or ""), groupd["value"]) + elif "prepend" in groupd and groupd["prepend"] != None: + val = "%s %s" % (groupd["value"], (getFunc(groupd, key, data) or "")) + elif "postdot" in groupd and groupd["postdot"] != None: + val = "%s%s" % ((getFunc(groupd, key, data) or ""), groupd["value"]) + elif "predot" in groupd and groupd["predot"] != None: + val = "%s%s" % (groupd["value"], (getFunc(groupd, key, data) or "")) + else: + val = groupd["value"] + if 'flag' in groupd and groupd['flag'] != None: + bb.msg.debug(3, bb.msg.domain.Parsing, "setVarFlag(%s, %s, %s, data)" % (key, groupd['flag'], val)) + bb.data.setVarFlag(key, groupd['flag'], val, data) + else: + bb.data.setVar(key, val, data) + return + + m = __include_regexp__.match(s) + if m: + s = bb.data.expand(m.group(1), data) + bb.msg.debug(3, bb.msg.domain.Parsing, "CONF %s:%d: including %s" % (fn, lineno, s)) + include(fn, s, data, False) + return + + m = __require_regexp__.match(s) + if m: + s = bb.data.expand(m.group(1), data) + include(fn, s, data, "include required") + return + + m = __export_regexp__.match(s) + if m: + bb.data.setVarFlag(m.group(1), "export", 1, data) + return + + raise ParseError("%s:%d: unparsed line: '%s'" % (fn, lineno, s)); + +# Add us to the handlers list +from bb.parse import handlers +handlers.append({'supports': supports, 'handle': handle, 'init': init}) +del handlers -- cgit v1.2.3