175 lines
4.9 KiB
Python
175 lines
4.9 KiB
Python
"""
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BitBake Parsers
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File parsers for the BitBake build tools.
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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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#
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# Based on functions from the base bb module, Copyright 2003 Holger Schurig
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handlers = []
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import errno
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import logging
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import os
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import stat
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import bb
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import bb.utils
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import bb.siggen
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logger = logging.getLogger("BitBake.Parsing")
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class ParseError(Exception):
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"""Exception raised when parsing fails"""
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def __init__(self, msg, filename, lineno=0):
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self.msg = msg
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self.filename = filename
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self.lineno = lineno
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Exception.__init__(self, msg, filename, lineno)
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def __str__(self):
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if self.lineno:
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return "ParseError at %s:%d: %s" % (self.filename, self.lineno, self.msg)
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else:
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return "ParseError in %s: %s" % (self.filename, self.msg)
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class SkipRecipe(Exception):
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"""Exception raised to skip this recipe"""
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class SkipPackage(SkipRecipe):
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"""Exception raised to skip this recipe (use SkipRecipe in new code)"""
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__mtime_cache = {}
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def cached_mtime(f):
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if f not in __mtime_cache:
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__mtime_cache[f] = os.stat(f)[stat.ST_MTIME]
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return __mtime_cache[f]
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def cached_mtime_noerror(f):
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if f not in __mtime_cache:
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try:
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__mtime_cache[f] = os.stat(f)[stat.ST_MTIME]
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except OSError:
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return 0
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return __mtime_cache[f]
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def update_mtime(f):
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try:
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__mtime_cache[f] = os.stat(f)[stat.ST_MTIME]
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except OSError:
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if f in __mtime_cache:
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del __mtime_cache[f]
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return 0
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return __mtime_cache[f]
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def update_cache(f):
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if f in __mtime_cache:
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logger.debug(1, "Updating mtime cache for %s" % f)
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update_mtime(f)
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def clear_cache():
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global __mtime_cache
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__mtime_cache = {}
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def mark_dependency(d, f):
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if f.startswith('./'):
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f = "%s/%s" % (os.getcwd(), f[2:])
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deps = (d.getVar('__depends', False) or [])
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s = (f, cached_mtime_noerror(f))
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if s not in deps:
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deps.append(s)
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d.setVar('__depends', deps)
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def check_dependency(d, f):
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s = (f, cached_mtime_noerror(f))
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deps = (d.getVar('__depends', False) or [])
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return s in deps
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def supports(fn, data):
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"""Returns true if we have a handler for this file, false otherwise"""
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for h in handlers:
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if h['supports'](fn, data):
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return 1
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return 0
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def handle(fn, data, include = 0):
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"""Call the handler that is appropriate for this file"""
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for h in handlers:
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if h['supports'](fn, data):
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with data.inchistory.include(fn):
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return h['handle'](fn, data, include)
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raise ParseError("not a BitBake file", fn)
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def init(fn, data):
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for h in handlers:
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if h['supports'](fn):
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return h['init'](data)
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def init_parser(d):
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bb.parse.siggen = bb.siggen.init(d)
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def resolve_file(fn, d):
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if not os.path.isabs(fn):
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bbpath = d.getVar("BBPATH")
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newfn, attempts = bb.utils.which(bbpath, fn, history=True)
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for af in attempts:
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mark_dependency(d, af)
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if not newfn:
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raise IOError(errno.ENOENT, "file %s not found in %s" % (fn, bbpath))
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fn = newfn
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mark_dependency(d, fn)
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if not os.path.isfile(fn):
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raise IOError(errno.ENOENT, "file %s not found" % fn)
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return fn
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# Used by OpenEmbedded metadata
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__pkgsplit_cache__={}
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def vars_from_file(mypkg, d):
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if not mypkg or not mypkg.endswith((".bb", ".bbappend")):
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return (None, None, None)
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if mypkg in __pkgsplit_cache__:
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return __pkgsplit_cache__[mypkg]
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myfile = os.path.splitext(os.path.basename(mypkg))
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parts = myfile[0].split('_')
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__pkgsplit_cache__[mypkg] = parts
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if len(parts) > 3:
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raise ParseError("Unable to generate default variables from filename (too many underscores)", mypkg)
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exp = 3 - len(parts)
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tmplist = []
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while exp != 0:
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exp -= 1
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tmplist.append(None)
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parts.extend(tmplist)
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return parts
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def get_file_depends(d):
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'''Return the dependent files'''
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dep_files = []
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depends = d.getVar('__base_depends', False) or []
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depends = depends + (d.getVar('__depends', False) or [])
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for (fn, _) in depends:
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dep_files.append(os.path.abspath(fn))
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return " ".join(dep_files)
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from bb.parse.parse_py import __version__, ConfHandler, BBHandler
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