code.vuplus.com Git - vuplus_bitbake/blob - bin/oe/parse/OEHandler.py

   1 """class for handling .oe files
   2
   3    Reads the file and obtains its metadata"""
   4
   5 import re, oe, os, sys
   6 import oe.fetch
   7 from oe import debug, data, fetch, fatal
   8
   9 from oe.parse.ConfHandler import include, localpath, obtain, init
  10
  11 __func_start_regexp__    = re.compile( r"(((?P<py>python)|(?P<fr>fakeroot))\s*)*(?P<func>\w+)?\s*\(\s*\)\s*{$" )
  12 __inherit_regexp__       = re.compile( r"inherit\s+(.+)" )
  13 __export_func_regexp__   = re.compile( r"EXPORT_FUNCTIONS\s+(.+)" )
  14 __addtask_regexp__       = re.compile("addtask\s+(?P<func>\w+)\s*((before\s*(?P<before>((.*(?=after))|(.*))))|(after\s*(?P<after>((.*(?=before))|(.*)))))*")
  15 __addhandler_regexp__       = re.compile( r"addhandler\s+(.+)" )
  16 __word__ = re.compile(r"\S+")
  17
  18 __infunc__ = ""
  19 __body__   = []
  20 __oepath_found__ = 0
  21 __classname__ = ""
  22 classes = [ None, ]
  23
  24 def supports(fn, d):
  25         localfn = localpath(fn, d)
  26         return localfn[-3:] == ".oe" or localfn[-8:] == ".oeclass"
  27
  28 def inherit(files, d):
  29         __inherit_cache = data.getVar('__inherit_cache', d) or ""
  30         fn = ""
  31         lineno = 0
  32         for f in files:
  33                 file = data.expand(f, d)
  34                 if file[0] != "/" and file[-8:] != ".oeclass":
  35                         file = "classes/%s.oeclass" % file
  36
  37                 if not file in __inherit_cache.split():
  38                         debug(2, "OE %s:%d: inheriting %s" % (fn, lineno, file))
  39                         __inherit_cache += " %s" % file
  40                         include(fn, file, d)
  41         data.setVar('__inherit_cache', __inherit_cache, d)
  42
  43
  44 def handle(fn, d = {}, include = 0):
  45         global __func_start_regexp__, __inherit_regexp__, __export_func_regexp__, __addtask_regexp__, __addhandler_regexp__, __infunc__, __body__, __oepath_found__
  46         __body__ = []
  47         __oepath_found__ = 0
  48         __infunc__ = ""
  49         __classname__ = ""
  50
  51         if include == 0:
  52                 debug(2, "OE " + fn + ": handle(data)")
  53         else:
  54                 debug(2, "OE " + fn + ": handle(data, include)")
  55
  56         (root, ext) = os.path.splitext(os.path.basename(fn))
  57         if ext == ".oeclass":
  58                 __classname__ = root
  59                 classes.append(__classname__)
  60
  61         init(d)
  62
  63         oldfile = data.getVar('FILE', d)
  64
  65         fn = obtain(fn, d)
  66         oepath = ['.']
  67         if not os.path.isabs(fn):
  68                 f = None
  69                 voepath = data.getVar("OEPATH", d)
  70                 if voepath:
  71                         oepath += voepath.split(":")
  72                 for p in oepath:
  73                         p = data.expand(p, d)
  74                         if os.access(os.path.join(p, fn), os.R_OK):
  75                                 f = open(os.path.join(p, fn), 'r')
  76                 if f is None:
  77                         raise IOError("file not found")
  78         else:
  79                 f = open(fn,'r')
  80
  81         if ext != ".oeclass":
  82                 data.setVar('FILE', fn, d)
  83                 i = (data.getVar("INHERIT", d, 1) or "").split()
  84                 if not "base" in i and __classname__ != "base":
  85                         i[0:0] = ["base"]
  86                 inherit(i, d)
  87
  88         lineno = 0
  89         while 1:
  90                 lineno = lineno + 1
  91                 s = f.readline()
  92                 if not s: break
  93                 w = s.strip()
  94                 if not w: continue              # skip empty lines
  95                 s = s.rstrip()
  96                 if s[0] == '#': continue        # skip comments
  97                 while s[-1] == '\\':
  98                         s2 = f.readline()[:-1].strip()
  99                         s = s[:-1] + s2
 100                 feeder(lineno, s, fn, d)
 101         if ext == ".oeclass":
 102                 classes.remove(__classname__)
 103         else:
 104                 if include == 0:
 105                         data.expandKeys(d)
 106                         data.update_data(d)
 107                         set_additional_vars(fn, d, include)
 108                         anonqueue = data.getVar("__anonqueue", d, 1) or []
 109                         for anon in anonqueue:
 110                                 data.setVar("__anonfunc", anon["content"], d)
 111                                 data.setVarFlags("__anonfunc", anon["flags"], d)
 112                                 from oe import build
 113                                 try:
 114                                         t = data.getVar('T', d)
 115                                         data.setVar('T', '${TMPDIR}/', d)
 116                                         build.exec_func("__anonfunc", d)
 117                                         data.delVar('T', d)
 118                                         if t:
 119                                                 data.setVar('T', t, d)
 120                                 except Exception, e:
 121                                         oe.error("executing anonymous function: %s" % e)
 122                                         pass
 123                         data.delVar("__anonqueue", d)
 124                         data.delVar("__anonfunc", d)
 125
 126                         for var in d.keys():
 127                                 if data.getVarFlag(var, 'handler', d):
 128                                         oe.event.register(data.getVar(var, d))
 129                                         continue
 130
 131                                 if not data.getVarFlag(var, 'task', d):
 132                                         continue
 133
 134                                 deps = data.getVarFlag(var, 'deps', d) or []
 135                                 postdeps = data.getVarFlag(var, 'postdeps', d) or []
 136                                 oe.build.add_task(var, deps, d)
 137                                 for p in postdeps:
 138                                         pdeps = data.getVarFlag(p, 'deps', d) or []
 139                                         pdeps.append(var)
 140                                         data.setVarFlag(p, 'deps', pdeps, d)
 141                                         oe.build.add_task(p, pdeps, d)
 142         if oldfile:
 143                 data.setVar('FILE', oldfile, d)
 144         return d
 145
 146 def feeder(lineno, s, fn, d):
 147         global __func_start_regexp__, __inherit_regexp__, __export_func_regexp__, __addtask_regexp__, __addhandler_regexp__, __infunc__, __body__, __oepath_found__, classes, oe
 148         if __infunc__:
 149                 if s == '}':
 150                         __body__.append('')
 151                         data.setVar(__infunc__, '\n'.join(__body__), d)
 152                         data.setVarFlag(__infunc__, "func", 1, d)
 153                         data.setVar(__infunc__, string.join(__body__, '\n'), d)
 154                         if __infunc__ == "__anonymous":
 155                                 anonqueue = oe.data.getVar("__anonqueue", d) or []
 156                                 anonitem = {}
 157                                 anonitem["content"] = oe.data.getVar("__anonymous", d)
 158                                 anonitem["flags"] = oe.data.getVarFlags("__anonymous", d)
 159                                 anonqueue.append(anonitem)
 160                                 oe.data.setVar("__anonqueue", anonqueue, d)
 161                                 oe.data.delVarFlags("__anonymous", d)
 162                                 oe.data.delVar("__anonymous", d)
 163                         __infunc__ = ""
 164                         __body__ = []
 165                 else:
 166                         __body__.append(s)
 167                 return
 168
 169         m = __func_start_regexp__.match(s)
 170         if m:
 171                 __infunc__ = m.group("func") or "__anonymous"
 172                 key = __infunc__
 173                 if data.getVar(key, d):
 174                         # clean up old version of this piece of metadata, as its
 175                         # flags could cause problems
 176                         data.setVarFlag(key, 'python', None, d)
 177                         data.setVarFlag(key, 'fakeroot', None, d)
 178                 if m.group("py") is not None:
 179                         data.setVarFlag(key, "python", "1", d)
 180                 else:
 181                         data.delVarFlag(key, "python", d)
 182                 if m.group("fr") is not None:
 183                         data.setVarFlag(key, "fakeroot", "1", d)
 184                 else:
 185                         data.delVarFlag(key, "fakeroot", d)
 186                 return
 187
 188         m = __export_func_regexp__.match(s)
 189         if m:
 190                 fns = m.group(1)
 191                 n = __word__.findall(fns)
 192                 for f in n:
 193                         allvars = []
 194                         allvars.append(f)
 195                         allvars.append(classes[-1] + "_" + f)
 196
 197                         vars = [[ allvars[0], allvars[1] ]]
 198                         if len(classes) > 1 and classes[-2] is not None:
 199                                 allvars.append(classes[-2] + "_" + f)
 200                                 vars = []
 201                                 vars.append([allvars[2], allvars[1]])
 202                                 vars.append([allvars[0], allvars[2]])
 203
 204                         for (var, calledvar) in vars:
 205                                 if data.getVar(var, d) and not data.getVarFlag(var, 'export_func', d):
 206                                         continue
 207
 208                                 if data.getVar(var, d):
 209                                         data.setVarFlag(var, 'python', None, d)
 210                                         data.setVarFlag(var, 'func', None, d)
 211
 212                                 for flag in [ "func", "python" ]:
 213                                         if data.getVarFlag(calledvar, flag, d):
 214                                                 data.setVarFlag(var, flag, data.getVarFlag(calledvar, flag, d), d)
 215                                 for flag in [ "dirs" ]:
 216                                         if data.getVarFlag(var, flag, d):
 217                                                 data.setVarFlag(calledvar, flag, data.getVarFlag(var, flag, d), d)
 218
 219                                 if data.getVarFlag(calledvar, "python", d):
 220                                         data.setVar(var, "\treturn oe.build.exec_func('" + calledvar + "', d)\n", d)
 221                                 else:
 222                                         data.setVar(var, "\t" + calledvar + "\n", d)
 223                                 data.setVarFlag(var, 'export_func', '1', d)
 224
 225                 return
 226
 227         m = __addtask_regexp__.match(s)
 228         if m:
 229                 func = m.group("func")
 230                 before = m.group("before")
 231                 after = m.group("after")
 232                 if func is None:
 233                         return
 234                 var = "do_" + func
 235
 236                 data.setVarFlag(var, "task", 1, d)
 237
 238                 if after is not None:
 239                         # set up deps for function
 240                         data.setVarFlag(var, "deps", after.split(), d)
 241                 if before is not None:
 242                         # set up things that depend on this func
 243                         data.setVarFlag(var, "postdeps", before.split(), d)
 244                 return
 245
 246         m = __addhandler_regexp__.match(s)
 247         if m:
 248                 fns = m.group(1)
 249                 hs = __word__.findall(fns)
 250                 for h in hs:
 251                         data.setVarFlag(h, "handler", 1, d)
 252                 return
 253
 254         m = __inherit_regexp__.match(s)
 255         if m:
 256
 257                 files = m.group(1)
 258                 n = __word__.findall(files)
 259                 inherit(n, d)
 260                 return
 261
 262         from oe.parse import ConfHandler
 263         return ConfHandler.feeder(lineno, s, fn, d)
 264
 265 __pkgsplit_cache__={}
 266 def vars_from_file(mypkg, d):
 267         if not mypkg:
 268                 return (None, None, None)
 269         if mypkg in __pkgsplit_cache__:
 270                 return __pkgsplit_cache__[mypkg]
 271
 272         myfile = os.path.splitext(os.path.basename(mypkg))
 273         parts = myfile[0].split('_')
 274         __pkgsplit_cache__[mypkg] = parts
 275         exp = 3 - len(parts)
 276         tmplist = []
 277         while exp != 0:
 278                 exp -= 1
 279                 tmplist.append(None)
 280         parts.extend(tmplist)
 281         return parts
 282
 283 def set_additional_vars(file, d, include):
 284         """Deduce rest of variables, e.g. ${A} out of ${SRC_URI}"""
 285
 286         debug(2,"OE %s: set_additional_vars" % file)
 287
 288         src_uri = data.getVar('SRC_URI', d)
 289         if not src_uri:
 290                 return
 291         src_uri = data.expand(src_uri, d)
 292
 293         a = data.getVar('A', d)
 294         if a:
 295                 a = data.expand(a, d).split()
 296         else:
 297                 a = []
 298
 299         from oe import fetch
 300         try:
 301                 fetch.init(src_uri.split())
 302         except fetch.NoMethodError:
 303                 pass
 304
 305         a += fetch.localpaths(d)
 306         del fetch
 307         data.setVar('A', "".join(a), d)
 308
 309
 310 # Add us to the handlers list
 311 from oe.parse import handlers
 312 handlers.append({'supports': supports, 'handle': handle, 'init': init})
 313 del handlers