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Diffstat (limited to 'bitbake/lib/bb/parse/__init__.py')
-rw-r--r-- | bitbake/lib/bb/parse/__init__.py | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/bitbake/lib/bb/parse/__init__.py b/bitbake/lib/bb/parse/__init__.py new file mode 100644 index 0000000000..25effc2200 --- /dev/null +++ b/bitbake/lib/bb/parse/__init__.py | |||
@@ -0,0 +1,164 @@ | |||
1 | """ | ||
2 | BitBake Parsers | ||
3 | |||
4 | File parsers for the BitBake build tools. | ||
5 | |||
6 | """ | ||
7 | |||
8 | |||
9 | # Copyright (C) 2003, 2004 Chris Larson | ||
10 | # Copyright (C) 2003, 2004 Phil Blundell | ||
11 | # | ||
12 | # This program is free software; you can redistribute it and/or modify | ||
13 | # it under the terms of the GNU General Public License version 2 as | ||
14 | # published by the Free Software Foundation. | ||
15 | # | ||
16 | # This program is distributed in the hope that it will be useful, | ||
17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
19 | # GNU General Public License for more details. | ||
20 | # | ||
21 | # You should have received a copy of the GNU General Public License along | ||
22 | # with this program; if not, write to the Free Software Foundation, Inc., | ||
23 | # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | ||
24 | # | ||
25 | # Based on functions from the base bb module, Copyright 2003 Holger Schurig | ||
26 | |||
27 | handlers = [] | ||
28 | |||
29 | import os | ||
30 | import stat | ||
31 | import logging | ||
32 | import bb | ||
33 | import bb.utils | ||
34 | import bb.siggen | ||
35 | |||
36 | logger = logging.getLogger("BitBake.Parsing") | ||
37 | |||
38 | class ParseError(Exception): | ||
39 | """Exception raised when parsing fails""" | ||
40 | def __init__(self, msg, filename, lineno=0): | ||
41 | self.msg = msg | ||
42 | self.filename = filename | ||
43 | self.lineno = lineno | ||
44 | Exception.__init__(self, msg, filename, lineno) | ||
45 | |||
46 | def __str__(self): | ||
47 | if self.lineno: | ||
48 | return "ParseError at %s:%d: %s" % (self.filename, self.lineno, self.msg) | ||
49 | else: | ||
50 | return "ParseError in %s: %s" % (self.filename, self.msg) | ||
51 | |||
52 | class SkipRecipe(Exception): | ||
53 | """Exception raised to skip this recipe""" | ||
54 | |||
55 | class SkipPackage(SkipRecipe): | ||
56 | """Exception raised to skip this recipe (use SkipRecipe in new code)""" | ||
57 | |||
58 | __mtime_cache = {} | ||
59 | def cached_mtime(f): | ||
60 | if f not in __mtime_cache: | ||
61 | __mtime_cache[f] = os.stat(f)[stat.ST_MTIME] | ||
62 | return __mtime_cache[f] | ||
63 | |||
64 | def cached_mtime_noerror(f): | ||
65 | if f not in __mtime_cache: | ||
66 | try: | ||
67 | __mtime_cache[f] = os.stat(f)[stat.ST_MTIME] | ||
68 | except OSError: | ||
69 | return 0 | ||
70 | return __mtime_cache[f] | ||
71 | |||
72 | def update_mtime(f): | ||
73 | __mtime_cache[f] = os.stat(f)[stat.ST_MTIME] | ||
74 | return __mtime_cache[f] | ||
75 | |||
76 | def update_cache(f): | ||
77 | if f in __mtime_cache: | ||
78 | logger.debug(1, "Updating mtime cache for %s" % f) | ||
79 | update_mtime(f) | ||
80 | |||
81 | def mark_dependency(d, f): | ||
82 | if f.startswith('./'): | ||
83 | f = "%s/%s" % (os.getcwd(), f[2:]) | ||
84 | deps = (d.getVar('__depends') or []) | ||
85 | s = (f, cached_mtime_noerror(f)) | ||
86 | if s not in deps: | ||
87 | deps.append(s) | ||
88 | d.setVar('__depends', deps) | ||
89 | |||
90 | def check_dependency(d, f): | ||
91 | s = (f, cached_mtime_noerror(f)) | ||
92 | deps = (d.getVar('__depends') or []) | ||
93 | return s in deps | ||
94 | |||
95 | def supports(fn, data): | ||
96 | """Returns true if we have a handler for this file, false otherwise""" | ||
97 | for h in handlers: | ||
98 | if h['supports'](fn, data): | ||
99 | return 1 | ||
100 | return 0 | ||
101 | |||
102 | def handle(fn, data, include = 0): | ||
103 | """Call the handler that is appropriate for this file""" | ||
104 | for h in handlers: | ||
105 | if h['supports'](fn, data): | ||
106 | with data.inchistory.include(fn): | ||
107 | return h['handle'](fn, data, include) | ||
108 | raise ParseError("not a BitBake file", fn) | ||
109 | |||
110 | def init(fn, data): | ||
111 | for h in handlers: | ||
112 | if h['supports'](fn): | ||
113 | return h['init'](data) | ||
114 | |||
115 | def init_parser(d): | ||
116 | bb.parse.siggen = bb.siggen.init(d) | ||
117 | |||
118 | def resolve_file(fn, d): | ||
119 | if not os.path.isabs(fn): | ||
120 | bbpath = d.getVar("BBPATH", True) | ||
121 | newfn, attempts = bb.utils.which(bbpath, fn, history=True) | ||
122 | for af in attempts: | ||
123 | mark_dependency(d, af) | ||
124 | if not newfn: | ||
125 | raise IOError("file %s not found in %s" % (fn, bbpath)) | ||
126 | fn = newfn | ||
127 | |||
128 | mark_dependency(d, fn) | ||
129 | if not os.path.isfile(fn): | ||
130 | raise IOError("file %s not found" % fn) | ||
131 | |||
132 | return fn | ||
133 | |||
134 | # Used by OpenEmbedded metadata | ||
135 | __pkgsplit_cache__={} | ||
136 | def vars_from_file(mypkg, d): | ||
137 | if not mypkg or not mypkg.endswith((".bb", ".bbappend")): | ||
138 | return (None, None, None) | ||
139 | if mypkg in __pkgsplit_cache__: | ||
140 | return __pkgsplit_cache__[mypkg] | ||
141 | |||
142 | myfile = os.path.splitext(os.path.basename(mypkg)) | ||
143 | parts = myfile[0].split('_') | ||
144 | __pkgsplit_cache__[mypkg] = parts | ||
145 | if len(parts) > 3: | ||
146 | raise ParseError("Unable to generate default variables from filename (too many underscores)", mypkg) | ||
147 | exp = 3 - len(parts) | ||
148 | tmplist = [] | ||
149 | while exp != 0: | ||
150 | exp -= 1 | ||
151 | tmplist.append(None) | ||
152 | parts.extend(tmplist) | ||
153 | return parts | ||
154 | |||
155 | def get_file_depends(d): | ||
156 | '''Return the dependent files''' | ||
157 | dep_files = [] | ||
158 | depends = d.getVar('__base_depends', True) or [] | ||
159 | depends = depends + (d.getVar('__depends', True) or []) | ||
160 | for (fn, _) in depends: | ||
161 | dep_files.append(os.path.abspath(fn)) | ||
162 | return " ".join(dep_files) | ||
163 | |||
164 | from bb.parse.parse_py import __version__, ConfHandler, BBHandler | ||