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1df5ab5ee2
When parsing multiline variables in conf files, the last character can be accidentally removed. s2 contains new data read from the file which may or may not end with the continuation character. It makes sense to let the next loop iteration strip this if needed. We don't often use multiline expressions in .conf files which is why I'd imagine we haven't noticed this before. Most variables are quoted and its the closing quotation which often disappears. (Bitbake rev: 09a9146262d58dfe4a2ea4270026b90ae33f6c91) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
140 lines
4.2 KiB
Python
140 lines
4.2 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 configuration data files
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Reads a .conf 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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import re, bb.data, os
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import logging
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import bb.utils
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from bb.parse import ParseError, resolve_file, ast, logger
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#__config_regexp__ = re.compile( r"(?P<exp>export\s*)?(?P<var>[a-zA-Z0-9\-_+.${}]+)\s*(?P<colon>:)?(?P<ques>\?)?=\s*(?P<apo>['\"]?)(?P<value>.*)(?P=apo)$")
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__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)$")
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__include_regexp__ = re.compile( r"include\s+(.+)" )
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__require_regexp__ = re.compile( r"require\s+(.+)" )
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__export_regexp__ = re.compile( r"export\s+(.+)" )
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def init(data):
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topdir = bb.data.getVar('TOPDIR', data)
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if not topdir:
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bb.data.setVar('TOPDIR', os.getcwd(), data)
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def supports(fn, d):
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return fn[-5:] == ".conf"
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def include(oldfn, fn, data, error_out):
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"""
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error_out If True a ParseError will be raised if the to be included
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config-files could not be included.
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"""
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if oldfn == fn: # prevent infinite recursion
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return None
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import bb
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fn = bb.data.expand(fn, data)
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oldfn = bb.data.expand(oldfn, data)
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if not os.path.isabs(fn):
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dname = os.path.dirname(oldfn)
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bbpath = "%s:%s" % (dname, bb.data.getVar("BBPATH", data, 1))
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abs_fn = bb.utils.which(bbpath, fn)
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if abs_fn:
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fn = abs_fn
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from bb.parse import handle
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try:
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ret = handle(fn, data, True)
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except IOError:
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if error_out:
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raise ParseError("Could not %(error_out)s file %(fn)s" % vars() )
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logger.debug(2, "CONF file '%s' not found", fn)
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def handle(fn, data, include):
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init(data)
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if include == 0:
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oldfile = None
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else:
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oldfile = bb.data.getVar('FILE', data)
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abs_fn = resolve_file(fn, data)
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f = open(abs_fn, 'r')
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if include:
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bb.parse.mark_dependency(data, abs_fn)
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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 = f.readline()
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if not s: break
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w = s.strip()
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if not w: continue # skip empty lines
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s = s.rstrip()
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if s[0] == '#': continue # skip comments
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while s[-1] == '\\':
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s2 = f.readline().strip()
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lineno = lineno + 1
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s = s[:-1] + s2
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feeder(lineno, s, fn, statements)
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# DONE WITH PARSING... time to evaluate
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bb.data.setVar('FILE', fn, data)
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statements.eval(data)
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if oldfile:
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bb.data.setVar('FILE', oldfile, data)
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return data
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def feeder(lineno, s, fn, statements):
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m = __config_regexp__.match(s)
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if m:
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groupd = m.groupdict()
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ast.handleData(statements, fn, lineno, groupd)
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return
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m = __include_regexp__.match(s)
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if m:
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ast.handleInclude(statements, fn, lineno, m, False)
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return
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m = __require_regexp__.match(s)
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if m:
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ast.handleInclude(statements, fn, lineno, m, True)
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return
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m = __export_regexp__.match(s)
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if m:
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ast.handleExport(statements, fn, lineno, m)
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return
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raise ParseError("%s:%d: unparsed line: '%s'" % (fn, lineno, s));
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# Add us to the handlers list
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from bb.parse import handlers
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handlers.append({'supports': supports, 'handle': handle, 'init': init})
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del handlers
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