1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
#!/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, resolve_file
#__config_regexp__ = re.compile( r"(?P<exp>export\s*)?(?P<var>[a-zA-Z0-9\-_+.${}]+)\s*(?P<colon>:)?(?P<ques>\?)?=\s*(?P<apo>['\"]?)(?P<value>.*)(?P=apo)$")
__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<ques>\?=)|(?P<append>\+=)|(?P<prepend>=\+)|(?P<predot>=\.)|(?P<postdot>\.=)|=)\s*(?P<apo>['\"]?)(?P<value>.*)(?P=apo)$")
__include_regexp__ = re.compile( r"include\s+(.+)" )
__require_regexp__ = re.compile( r"require\s+(.+)" )
__export_regexp__ = re.compile( r"export\s+(.+)" )
# routines for the parser, to be turned into an AST
def handleInclude(m, fn, lineno, data, force):
s = bb.data.expand(m.group(1), data)
bb.msg.debug(3, bb.msg.domain.Parsing, "CONF %s:%d: including %s" % (fn, lineno, s))
if force:
include(fn, s, data, "include required")
else
include(fn, s, data, False)
def handleExport(m, data):
bb.data.setVarFlag(m.group(1), "export", 1, data)
def handleData(groupd, data):
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)
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)
def init(data):
topdir = bb.data.getVar('TOPDIR', data)
if not topdir:
topdir = os.getcwd()
bb.data.setVar('TOPDIR', topdir, data)
if not bb.data.getVar('BBPATH', data):
from pkg_resources import Requirement, resource_filename
bitbake = Requirement.parse("bitbake")
datadir = resource_filename(bitbake, "../share/bitbake")
basedir = resource_filename(bitbake, "..")
bb.data.setVar('BBPATH', '%s:%s:%s' % (topdir, datadir, basedir), data)
def supports(fn, d):
return fn[-5:] == ".conf"
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)
if not os.path.isabs(fn):
dname = os.path.dirname(oldfn)
bbpath = "%s:%s" % (dname, bb.data.getVar("BBPATH", data, 1))
abs_fn = bb.which(bbpath, fn)
if abs_fn:
fn = abs_fn
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):
init(data)
if include == 0:
oldfile = None
else:
oldfile = bb.data.getVar('FILE', data)
(f, abs_fn) = resolve_file(fn, data)
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):
m = __config_regexp__.match(s)
if m:
groupd = m.groupdict()
handleData(groupd, data)
return
m = __include_regexp__.match(s)
if m:
handleInclude(m, fn, lineno, data, False)
return
m = __require_regexp__.match(s)
if m:
handleInclude(m, fn, lineno, data, True)
return
m = __export_regexp__.match(s)
if m:
handleExport(m, 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
|
