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-rw-r--r--buildtools/wafsamba/samba_headers.py181
1 files changed, 181 insertions, 0 deletions
diff --git a/buildtools/wafsamba/samba_headers.py b/buildtools/wafsamba/samba_headers.py
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+++ b/buildtools/wafsamba/samba_headers.py
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+# specialist handling of header files for Samba
+
+import os, re, sys, fnmatch
+from waflib import Build, Logs, Utils, Errors
+from samba_utils import TO_LIST
+
+
+def header_install_path(header, header_path):
+ '''find the installation path for a header, given a header_path option'''
+ if not header_path:
+ return ''
+ if not isinstance(header_path, list):
+ return header_path
+ for (p1, dir) in header_path:
+ for p2 in TO_LIST(p1):
+ if fnmatch.fnmatch(header, p2):
+ return dir
+ # default to current path
+ return ''
+
+
+re_header = re.compile('^\s*#\s*include[ \t]*"([^"]+)"', re.I | re.M)
+
+# a dictionary mapping source header paths to public header paths
+header_map = {}
+
+def find_suggested_header(hpath):
+ '''find a suggested header path to use'''
+ base = os.path.basename(hpath)
+ ret = []
+ for h in header_map:
+ if os.path.basename(h) == base:
+ ret.append('<%s>' % header_map[h])
+ ret.append('"%s"' % h)
+ return ret
+
+def create_public_header(task):
+ '''create a public header from a private one, output within the build tree'''
+ src = task.inputs[0].abspath(task.env)
+ tgt = task.outputs[0].bldpath(task.env)
+
+ if os.path.exists(tgt):
+ os.unlink(tgt)
+
+ relsrc = os.path.relpath(src, task.env.TOPDIR)
+
+ infile = open(src, mode='r')
+ outfile = open(tgt, mode='w')
+ linenumber = 0
+
+ search_paths = [ '', task.env.RELPATH ]
+ for i in task.env.EXTRA_INCLUDES:
+ if i.startswith('#'):
+ search_paths.append(i[1:])
+
+ for line in infile:
+ linenumber += 1
+
+ # allow some straight substitutions
+ if task.env.public_headers_replace and line.strip() in task.env.public_headers_replace:
+ outfile.write(task.env.public_headers_replace[line.strip()] + '\n')
+ continue
+
+ # see if its an include line
+ m = re_header.match(line)
+ if m is None:
+ outfile.write(line)
+ continue
+
+ # its an include, get the header path
+ hpath = m.group(1)
+ if hpath.startswith("bin/default/"):
+ hpath = hpath[12:]
+
+ # some are always allowed
+ if task.env.public_headers_skip and hpath in task.env.public_headers_skip:
+ outfile.write(line)
+ continue
+
+ # work out the header this refers to
+ found = False
+ for s in search_paths:
+ p = os.path.normpath(os.path.join(s, hpath))
+ if p in header_map:
+ outfile.write("#include <%s>\n" % header_map[p])
+ found = True
+ break
+ if found:
+ continue
+
+ if task.env.public_headers_allow_broken:
+ Logs.warn("Broken public header include '%s' in '%s'" % (hpath, relsrc))
+ outfile.write(line)
+ continue
+
+ # try to be nice to the developer by suggesting an alternative
+ suggested = find_suggested_header(hpath)
+ outfile.close()
+ os.unlink(tgt)
+ sys.stderr.write("%s:%u:Error: unable to resolve public header %s (maybe try one of %s)\n" % (
+ os.path.relpath(src, os.getcwd()), linenumber, hpath, suggested))
+ raise Errors.WafError("Unable to resolve header path '%s' in public header '%s' in directory %s" % (
+ hpath, relsrc, task.env.RELPATH))
+ infile.close()
+ outfile.close()
+
+
+def public_headers_simple(bld, public_headers, header_path=None, public_headers_install=True):
+ '''install some headers - simple version, no munging needed
+ '''
+ if not public_headers_install:
+ return
+ for h in TO_LIST(public_headers):
+ inst_path = header_install_path(h, header_path)
+ if h.find(':') != -1:
+ s = h.split(":")
+ h_name = s[0]
+ inst_name = s[1]
+ else:
+ h_name = h
+ inst_name = os.path.basename(h)
+ bld.INSTALL_FILES('${INCLUDEDIR}', h_name, destname=inst_name)
+
+
+def PUBLIC_HEADERS(bld, public_headers, header_path=None, public_headers_install=True):
+ '''install some headers
+
+ header_path may either be a string that is added to the INCLUDEDIR,
+ or it can be a dictionary of wildcard patterns which map to destination
+ directories relative to INCLUDEDIR
+ '''
+ bld.SET_BUILD_GROUP('final')
+
+ if not bld.env.build_public_headers:
+ # in this case no header munging neeeded. Used for tdb, talloc etc
+ public_headers_simple(bld, public_headers, header_path=header_path,
+ public_headers_install=public_headers_install)
+ return
+
+ # create the public header in the given path
+ # in the build tree
+ for h in TO_LIST(public_headers):
+ inst_path = header_install_path(h, header_path)
+ if h.find(':') != -1:
+ s = h.split(":")
+ h_name = s[0]
+ inst_name = s[1]
+ else:
+ h_name = h
+ inst_name = os.path.basename(h)
+ curdir = bld.path.abspath()
+ relpath1 = os.path.relpath(bld.srcnode.abspath(), curdir)
+ relpath2 = os.path.relpath(curdir, bld.srcnode.abspath())
+ targetdir = os.path.normpath(os.path.join(relpath1, bld.env.build_public_headers, inst_path))
+ if not os.path.exists(os.path.join(curdir, targetdir)):
+ raise Errors.WafError("missing source directory %s for public header %s" % (targetdir, inst_name))
+ target = os.path.join(targetdir, inst_name)
+
+ # the source path of the header, relative to the top of the source tree
+ src_path = os.path.normpath(os.path.join(relpath2, h_name))
+
+ # the install path of the header, relative to the public include directory
+ target_path = os.path.normpath(os.path.join(inst_path, inst_name))
+
+ header_map[src_path] = target_path
+
+ t = bld.SAMBA_GENERATOR('HEADER_%s/%s/%s' % (relpath2, inst_path, inst_name),
+ group='headers',
+ rule=create_public_header,
+ source=h_name,
+ target=target)
+ t.env.RELPATH = relpath2
+ t.env.TOPDIR = bld.srcnode.abspath()
+ if not bld.env.public_headers_list:
+ bld.env.public_headers_list = []
+ bld.env.public_headers_list.append(os.path.join(inst_path, inst_name))
+ if public_headers_install:
+ bld.INSTALL_FILES('${INCLUDEDIR}',
+ target,
+ destname=os.path.join(inst_path, inst_name), flat=True)
+Build.BuildContext.PUBLIC_HEADERS = PUBLIC_HEADERS