#!/usr/bin/env python # Available modulesets: # # bootstrap.modules # freedesktop.modules # gcj.modules # gnome-2.10.modules # gnome-2.12.modules # gnome-2.14.modules # gnome-2.16.modules # gnutls.modules # gtk28.modules # gtk.modules # xorg-7.0.modules # xorg.modules moduleset = 'xorg.modules' import cElementTree as ElementTree # import lxml.etree as ElementTree import re, os, bb, bb.data class Handlers(object): """ Class to act as a store for handlers of jhbuild xml elements, and as a dispatcher of parsed Elements to those handlers. These handlers exist to take an xml element from the jhbuild files and either produce bitbake metadata in self.packages, or produce data which will be used by other element handlers to do so. Handlers(filename) -> new object to parse and process jhbuild file of name 'filename'. """ cvsrootpat = re.compile(r''' \s* # Skip leading whitespace :(?P<scheme>[^:]+): # scheme (i.e. pserver, ext) ((?P<user>\S+?)@)? # username (?P<host>\S+?): # non-greedy match of the remote host (?P<path>\S+) # remote path ''', re.VERBOSE) def __init__(self, msfile): self.msfile = msfile self.msbasename = os.path.basename(msfile) self.msdirname = os.path.dirname(msfile) self.handled = {} self.cvsroots = {} self.repositories = {} self.packages = [] def handle(self, element, parent): import sys """ XML Element dispatch function. Can be called both from outside the Handlers object to initiate handling, and from within individual XML element handlers to ensure that dependent elements have been handled. Does not handle a given XML Element more than once, as it retains information about the handling state of the Elements it encounters. """ try: state = self.handled[element] except KeyError: pass except: return try: self.__class__.__dict__[element.tag](self, element, parent) self.handled[element] = True except KeyError: self.handled[element] = False sys.__stderr__.write('Unhandled element: %s\n' % element.tag) except Exception: sys.__stderr__.write('Error handling %s: %s:\n %s\n' % (element.tag, sys.exc_type, sys.exc_value)) self.handled[element] = False print('handle(%s, %s) -> %s' % (element, parent, self.handled[element])) return self.handled[element] def cvsroot(self, element, parent): # Rip apart the cvsroot style location to build a cvs:// url for # bitbake's usage in the cvsmodule handler. # root=":pserver:anoncvs@cvs.freedesktop.org:/cvs/fontconfig" print("cvsroot(%s, %s)" % (element, parent)) root = element.attrib.get('root') rootmatch = re.match(Handlers.cvsrootpat, root) name = element.attrib.get('name') user = rootmatch.group('user') or '' if user != '': pw = element.attrib.get('password') or '' if pw != '': pw = ':' + pw + '@' else: user = user + '@' print('user: %s' % user) print('pw: %s' % pw) host = rootmatch.group('host') print('host: %s' % host) path = rootmatch.group('path') or '/' print('path: %s' % path) root = "cvs://%s%s%s%s" % (user, pw, host, path) print('root: %s' % root) self.cvsroots[name] = root def cvsmodule(self, element, parent): rootlist = [root for root in list(parent) if root.attrib.get('name') == element.attrib.get('cvsroot')] if len(rootlist) < 1: raise Exception("Error: cvsmodule '%s' requires cvsroot '%s'." % (element.attrib.get('module'), element.attrib.get('cvsroot'))) cvsroot = rootlist[0] def include(self, element, parent): href = element.attrib.get('href') fullhref = os.path.join(self.msdirname, href) tree = ElementTree.ElementTree(file=fullhref) elem = tree.getroot() # Append the children of the newly included root element to the parent # element, and manually handle() them, as the currently running # iteration isn't going to hit them. for child in elem: self.handle(child, elem) parent.append(elem) def repository(self, element, parent): # TODO: # Convert the URL in the href attribute, if necessary, to the format # which bitbake expects to see in SRC_URI. name = element.attrib.get('name') self.repositories[name] = element.attrib.get('href') def moduleset(self, element, parent): for child in element: self.handle(child, element) def packagename(self, name): # mangle name into an appropriate bitbake package name return name.replace('/', '-') def metamodule(self, element, parent): # grab the deps deps = None for child in element: if child.tag == 'dependencies': deps = [self.packagename(dep.attrib.get('package')) for dep in child if dep.tag == "dep"] # create the package d = bb.data.init() pn = self.packagename(element.attrib.get('id')) bb.data.setVar('PN', pn, d) bb.data.setVar('DEPENDS', ' '.join(deps), d) bb.data.setVar('_handler', 'metamodule', d) self.packages.append(d) def autotools(self, element, parent): deps = None branch = None for child in element: if child.tag == 'dependencies': deps = [self.packagename(dep.attrib.get('package')) for dep in child if dep.tag == "dep"] elif child.tag == 'branch': branch = child # create the package d = bb.data.init() id = element.attrib.get('id') if id is None: raise Exception('Error: autotools element has no id attribute.') pn = self.packagename(id) bb.data.setVar('PN', pn, d) if deps is not None: bb.data.setVar('DEPENDS', ' '.join(deps), d) if branch is not None: # <branch repo="git.freedesktop.org" module="xorg/xserver"/> repo = os.path.join(self.repositories[branch.attrib.get('repo')], branch.attrib.get('module')) bb.data.setVar('SRC_URI', repo, d) checkoutdir = branch.attrib.get('checkoutdir') if checkoutdir is not None: bb.data.setVar('S', os.path.join('${WORKDIR}', checkoutdir), d) # build class bb.data.setVar('INHERITS', 'autotools', d) bb.data.setVarFlag('INHERITS', 'operator', '+=', d) bb.data.setVar('_handler', 'autotools', d) self.packages.append(d) class Emitter(object): """ Class which contains a single method for the emission of a bitbake package from the bitbake data produced by a Handlers object. """ def __init__(self, filefunc = None, basedir = None): def _defaultfilefunc(package): # return a relative path to the bitbake .bb which will be written return bb.data.getVar('PN', package, 1) + '.bb' self.filefunc = filefunc or _defaultfilefunc self.basedir = basedir or os.path.abspath(os.curdir) def write(self, package, template = None): # 1) Assemble new file contents in ram, either new from bitbake # metadata, or a combination of the template and that metadata. # 2) Open the path returned by the filefunc + the basedir for writing. # 3) Write the new bitbake data file. fdata = '' if template: f = file(template, 'r') fdata = f.read() f.close() for key in bb.data.keys(package): fdata = fdata.replace('@@'+key+'@@', bb.data.getVar(key, package)) else: for key in bb.data.keys(package): if key == '_handler': continue elif key == 'INHERITS': fdata += 'inherit %s\n' % bb.data.getVar('INHERITS', package) else: oper = bb.data.getVarFlag(key, 'operator', package) or '=' fdata += '%s %s "%s"\n' % (key, oper, bb.data.getVar(key, package)) if not os.path.exists(os.path.join(self.basedir, os.path.dirname(self.filefunc(package)))): os.makedirs(os.path.join(self.basedir, os.path.dirname(self.filefunc(package)))) out = file(os.path.join(self.basedir, self.filefunc(package)), 'w') out.write(fdata) out.close() def _test(): msfile = os.path.join(os.path.abspath(os.curdir), 'modulesets', moduleset) tree = ElementTree.ElementTree(file=msfile) elem = tree.getroot() handlers = Handlers(msfile) handlers.handle(elem, None) def filefunc(package): # return a relative path to the bitbake .bb which will be written src_uri = bb.data.getVar('SRC_URI', package, 1) filename = bb.data.getVar('PN', package, 1) + '.bb' if not src_uri: return filename else: substr = src_uri[src_uri.find('xorg/'):] subdirlist = substr.split('/')[:2] subdir = '-'.join(subdirlist) return os.path.join(subdir, filename) emitter = Emitter(filefunc) for package in handlers.packages: template = emitter.filefunc(package) + '.in' if os.path.exists(template): print("%s exists, emitting based on template" % template) emitter.write(package, template) else: print("%s does not exist, emitting non-templated" % template) emitter.write(package) if __name__ == "__main__": _test()