1 files changed, 199 insertions, 0 deletions

diff --git a/bitbake/lib/bb/parse/parse_py/ConfHandler.py b/bitbake/lib/bb/parse/parse_py/ConfHandler.py
new file mode 100644
index 0000000000..41ef96d557
--- /dev/null
+++ b/bitbake/lib/bb/parse/parse_py/ConfHandler.py
@@ -0,0 +1,199 @@
+#!/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 as published by the Free Software
+   Foundation; either version 2 of the License, or (at your option) any later
+   version.
+   
+   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., 59 Temple
+   Place, Suite 330, Boston, MA 02111-1307 USA.""" 
+
+import re, bb.data, os, sys
+from bb import debug, fatal
+from bb.parse import ParseError
+
+#__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+(.+)" )
+
+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
+
+    localfn = None
+    try:
+        localfn = bb.fetch.localpath(fn, d)
+    except bb.MalformedUrl:
+        pass
+
+    if not localfn:
+        localfn = fn
+    return localfn
+
+def obtain(fn, data = bb.data.init()):
+    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:
+            debug(1, "obtain: DL_DIR not defined")
+            return localfn
+        bb.mkdirhier(dldir)
+        try:
+            bb.fetch.init([fn])
+        except bb.fetch.NoMethodError:
+            (type, value, traceback) = sys.exc_info()
+            debug(1, "obtain: no method: %s" % value)
+            return localfn
+
+        try:
+            bb.fetch.go(data)
+        except bb.fetch.MissingParameterError:
+            (type, value, traceback) = sys.exc_info()
+            debug(1, "obtain: missing parameters: %s" % value)
+            return localfn
+        except bb.fetch.FetchError:
+            (type, value, traceback) = sys.exc_info()
+            debug(1, "obtain: failed: %s" % value)
+            return localfn
+    return localfn
+
+
+def include(oldfn, fn, data = bb.data.init()):
+    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, 1)
+    except IOError:
+        debug(2, "CONF file '%s' not found" % fn)
+
+def handle(fn, data = bb.data.init(), 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)
+    bbpath = []
+    if not os.path.isabs(fn):
+        f = None
+        vbbpath = bb.data.getVar("BBPATH", data)
+        if vbbpath:
+            bbpath += vbbpath.split(":")
+        for p in bbpath:
+            currname = os.path.join(bb.data.expand(p, data), fn)
+            if os.access(currname, os.R_OK):
+                f = open(currname, 'r')
+                abs_fn = currname
+                debug(1, "CONF %s %s" % (inc_string, currname))
+                break
+        if f is None:
+            raise IOError("file not found")
+    else:
+        f = open(fn,'r')
+        debug(1, "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 = bb.data.init()):
+    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 = bb.data.getVar(key, data)
+            if val == None:
+                val = groupd["value"]
+        elif "colon" in groupd and groupd["colon"] != None:
+            val = bb.data.expand(groupd["value"], data)
+        elif "append" in groupd and groupd["append"] != None:
+            val = "%s %s" % ((bb.data.getVar(key, data) or ""), groupd["value"])
+        elif "prepend" in groupd and groupd["prepend"] != None:
+            val = "%s %s" % (groupd["value"], (bb.data.getVar(key, data) or ""))
+        elif "postdot" in groupd and groupd["postdot"] != None:
+            val = "%s%s" % ((bb.data.getVar(key, data) or ""), groupd["value"])
+        elif "predot" in groupd and groupd["predot"] != None:
+            val = "%s%s" % (groupd["value"], (bb.data.getVar(key, data) or ""))
+        else:
+            val = groupd["value"]
+        if 'flag' in groupd and groupd['flag'] != None:
+#           bb.note("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)
+#       debug(2, "CONF %s:%d: including %s" % (fn, lineno, s))
+        include(fn, s, 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