source: vendor/3.6.0/buildtools/wafsamba/samba_headers.py

Last change on this file was 740, checked in by Silvan Scherrer, 13 years ago

Samba Server: update vendor to 3.6.0
File size: 6.6 KB
Line 
1# specialist handling of header files for Samba
2
3import Build, re, Task, TaskGen, shutil, sys, Logs
4from samba_utils import *
5
6
7def header_install_path(header, header_path):
8 '''find the installation path for a header, given a header_path option'''
9 if not header_path:
10 return ''
11 if not isinstance(header_path, list):
12 return header_path
13 for (p1, dir) in header_path:
14 for p2 in TO_LIST(p1):
15 if fnmatch.fnmatch(header, p2):
16 return dir
17 # default to current path
18 return ''
19
20
21re_header = re.compile('^\s*#\s*include[ \t]*"([^"]+)"', re.I | re.M)
22
23# a dictionary mapping source header paths to public header paths
24header_map = {}
25
26def find_suggested_header(hpath):
27 '''find a suggested header path to use'''
28 base = os.path.basename(hpath)
29 ret = []
30 for h in header_map:
31 if os.path.basename(h) == base:
32 ret.append('<%s>' % header_map[h])
33 ret.append('"%s"' % h)
34 return ret
35
36def create_public_header(task):
37 '''create a public header from a private one, output within the build tree'''
38 src = task.inputs[0].abspath(task.env)
39 tgt = task.outputs[0].bldpath(task.env)
40
41 if os.path.exists(tgt):
42 os.unlink(tgt)
43
44 relsrc = os_path_relpath(src, task.env.TOPDIR)
45
46 infile = open(src, mode='r')
47 outfile = open(tgt, mode='w')
48 linenumber = 0
49
50 search_paths = [ '', task.env.RELPATH ]
51 for i in task.env.EXTRA_INCLUDES:
52 if i.startswith('#'):
53 search_paths.append(i[1:])
54
55 for line in infile:
56 linenumber += 1
57
58 # allow some straight substitutions
59 if task.env.public_headers_replace and line.strip() in task.env.public_headers_replace:
60 outfile.write(task.env.public_headers_replace[line.strip()] + '\n')
61 continue
62
63 # see if its an include line
64 m = re_header.match(line)
65 if m is None:
66 outfile.write(line)
67 continue
68
69 # its an include, get the header path
70 hpath = m.group(1)
71 if hpath.startswith("bin/default/"):
72 hpath = hpath[12:]
73
74 # some are always allowed
75 if task.env.public_headers_skip and hpath in task.env.public_headers_skip:
76 outfile.write(line)
77 continue
78
79 # work out the header this refers to
80 found = False
81 for s in search_paths:
82 p = os.path.normpath(os.path.join(s, hpath))
83 if p in header_map:
84 outfile.write("#include <%s>\n" % header_map[p])
85 found = True
86 break
87 if found:
88 continue
89
90 if task.env.public_headers_allow_broken:
91 Logs.warn("Broken public header include '%s' in '%s'" % (hpath, relsrc))
92 outfile.write(line)
93 continue
94
95 # try to be nice to the developer by suggesting an alternative
96 suggested = find_suggested_header(hpath)
97 outfile.close()
98 os.unlink(tgt)
99 sys.stderr.write("%s:%u:Error: unable to resolve public header %s (maybe try one of %s)\n" % (
100 os.path.relpath(src, os.getcwd()), linenumber, hpath, suggested))
101 raise Utils.WafError("Unable to resolve header path '%s' in public header '%s' in directory %s" % (
102 hpath, relsrc, task.env.RELPATH))
103 infile.close()
104 outfile.close()
105
106
107def public_headers_simple(bld, public_headers, header_path=None, public_headers_install=True):
108 '''install some headers - simple version, no munging needed
109 '''
110 if not public_headers_install:
111 return
112 for h in TO_LIST(public_headers):
113 inst_path = header_install_path(h, header_path)
114 if h.find(':') != -1:
115 s = h.split(":")
116 h_name = s[0]
117 inst_name = s[1]
118 else:
119 h_name = h
120 inst_name = os.path.basename(h)
121 bld.INSTALL_FILES('${INCLUDEDIR}', h_name, destname=inst_name)
122
123
124
125def PUBLIC_HEADERS(bld, public_headers, header_path=None, public_headers_install=True):
126 '''install some headers
127
128 header_path may either be a string that is added to the INCLUDEDIR,
129 or it can be a dictionary of wildcard patterns which map to destination
130 directories relative to INCLUDEDIR
131 '''
132 bld.SET_BUILD_GROUP('final')
133
134 if not bld.env.build_public_headers:
135 # in this case no header munging neeeded. Used for tdb, talloc etc
136 public_headers_simple(bld, public_headers, header_path=header_path,
137 public_headers_install=public_headers_install)
138 return
139
140 # create the public header in the given path
141 # in the build tree
142 for h in TO_LIST(public_headers):
143 inst_path = header_install_path(h, header_path)
144 if h.find(':') != -1:
145 s = h.split(":")
146 h_name = s[0]
147 inst_name = s[1]
148 else:
149 h_name = h
150 inst_name = os.path.basename(h)
151 relpath1 = os_path_relpath(bld.srcnode.abspath(), bld.curdir)
152 relpath2 = os_path_relpath(bld.curdir, bld.srcnode.abspath())
153 targetdir = os.path.normpath(os.path.join(relpath1, bld.env.build_public_headers, inst_path))
154 if not os.path.exists(os.path.join(bld.curdir, targetdir)):
155 raise Utils.WafError("missing source directory %s for public header %s" % (targetdir, inst_name))
156 target = os.path.join(targetdir, inst_name)
157
158 # the source path of the header, relative to the top of the source tree
159 src_path = os.path.normpath(os.path.join(relpath2, h_name))
160
161 # the install path of the header, relative to the public include directory
162 target_path = os.path.normpath(os.path.join(inst_path, inst_name))
163
164 header_map[src_path] = target_path
165
166 t = bld.SAMBA_GENERATOR('HEADER_%s/%s/%s' % (relpath2, inst_path, inst_name),
167 group='headers',
168 rule=create_public_header,
169 source=h_name,
170 target=target)
171 t.env.RELPATH = relpath2
172 t.env.TOPDIR = bld.srcnode.abspath()
173 if not bld.env.public_headers_list:
174 bld.env.public_headers_list = []
175 bld.env.public_headers_list.append(os.path.join(inst_path, inst_name))
176 if public_headers_install:
177 bld.INSTALL_FILES('${INCLUDEDIR}',
178 target,
179 destname=os.path.join(inst_path, inst_name), flat=True)
180Build.BuildContext.PUBLIC_HEADERS = PUBLIC_HEADERS
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