#!/usr/bin/python2 # # Automatic patch dependency checker and apply script/README.md generator. # # Copyright (C) 2014-2015 Sebastian Lackner # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 of the License, or (at your option) any later version. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA # import binascii import cPickle as pickle import contextlib import fnmatch import hashlib import itertools import math import multiprocessing.pool import operator import os import patchutils import progressbar import re import signal import subprocess import sys import tempfile import textwrap import urllib import xml.dom.minidom _devnull = open(os.devnull, 'wb') # Cached information to speed up patch dependency checks latest_wine_commit = None latest_staging_version = None cached_patch_result = {} class config(object): path_cache = ".patchupdate.cache" path_patches = "patches" path_changelog = "debian/changelog" path_wine = "debian/tools/wine" path_template_script = "debian/tools/patchinstall.sh.in" path_script = "patches/patchinstall.sh" path_template_README_md = "debian/tools/README.md.in" path_README_md = "README.md" path_IfDefined = "9999-IfDefined.patch" class PatchUpdaterError(RuntimeError): """Failed to update patches.""" pass class PatchSet(object): def __init__(self, name, directory): self.name = name self.variable = None self.directory = directory self.fixes = [] self.changes = [] self.disabled = False self.ifdefined = None self.files = [] self.patches = [] self.modified_files = set() self.depends = set() self.auto_depends = set() self.verify_time = None def _pairs(a): """Iterate over all pairs of elements contained in the list a.""" for i, j in enumerate(a): for k in a[i+1:]: yield (j, k) def _unique(iterable, key=None): "List unique elements, preserving order. Remember only the element just seen." # _unique('AAAABBBCCDAABBB') --> A B C D A B # _unique('ABBCcAD', str.lower) --> A B C A D return itertools.imap(next, itertools.imap(operator.itemgetter(1), itertools.groupby(iterable, key))) def _split_seq(iterable, size): """Split an iterator into chunks of a given size.""" it = iter(iterable) items = list(itertools.islice(it, size)) while items: yield items items = list(itertools.islice(it, size)) def _escape(s): """Escape string inside of '...' quotes.""" return s.replace("\\", "\\\\\\\\").replace("\"", "\\\"").replace("'", "'\\''") def _load_dict(filename): """Load a Python dictionary object from a file.""" try: with open(filename) as fp: return pickle.load(fp) except IOError: return {} def _save_dict(filename, value): """Save a Python dictionary object to a file.""" with open("%s.new" % filename, "wb") as fp: pickle.dump(value, fp, pickle.HIGHEST_PROTOCOL) os.rename("%s.new" % filename, filename) def _sha256(fp): """Calculate sha256sum from a file descriptor.""" m = hashlib.sha256() fp.seek(0) while True: buf = fp.read(16384) if buf == "": break m.update(buf) return m.digest() def _parse_int(val, default=0): """Parse an integer or boolean value.""" r = re.match("^[0-9]+$", val) if r: return int(val) try: return {'true': 1, 'yes': 1, 'false': 0, 'no': 0}[val.lower()] except AttributeError: return default def _winebugs_query(bugids): """Query short_desc from multiple wine bugzilla bugs at the same time.""" bugids = list(set(bugids)) # Remove duplicates and convert to fixed order if len(bugids) == 0: return {} # Query bugzilla url = "http://bugs.winehq.org/show_bug.cgi?%s&ctype=xml&field=short_desc&field=bug_status&field=resolution" % \ "&".join(["id=%d" % bugid for bugid in bugids]) with contextlib.closing(urllib.urlopen(url)) as fp: data = xml.dom.minidom.parseString(fp.read()) # convert xml in a dictionary containing all bugs we found result = {} for element in data.getElementsByTagName('bug_id'): bugids.remove(int(element.firstChild.data)) def _get_text(n): return n.firstChild.data if (n and n.firstChild) else None for bugid, element in zip(bugids, data.getElementsByTagName('bug')): if element.getElementsByTagName('bug_id'): continue result[bugid] = { 'short_desc': _get_text(element.getElementsByTagName('short_desc')[0]), 'bug_status': _get_text(element.getElementsByTagName('bug_status')[0]), 'resolution': _get_text(element.getElementsByTagName('resolution')[0]) } return result def _read_changelog(): """Read information from changelog.""" with open(config.path_changelog) as fp: for line in fp: r = re.match("^([a-zA-Z0-9][^(]*)\((.*)\) ([^;]*)", line) if r: yield (r.group(1).strip(), r.group(2).strip(), r.group(3).strip()) def _latest_staging_version(only_stable=False): """Get version number of the latest stable release.""" for package, version, distro in _read_changelog(): if distro.lower() != "unreleased": return version elif not only_stable: return "%s (unreleased)" % version def _latest_wine_commit(commit=None): """Get latest wine commit.""" if not os.path.isdir(config.path_wine): raise PatchUpdaterError("Please create a symlink to the wine repository in %s" % config.path_wine) if commit is None: commit = subprocess.check_output(["git", "rev-parse", "origin/master"], cwd=config.path_wine).strip() assert len(commit) == 40 and commit == commit.lower() return commit def enum_directories(revision, path): """Enumerate all subdirectories of 'path' at a specific revision.""" dirs = [] if path[0:2] == "./": path = path[2:] elif path[0] == "/": raise RuntimeError("Expected relative path, not an absolute path") if revision is None: for name in os.listdir(path): if name in [".", ".."]: continue directory = os.path.join(path, name) if not os.path.isdir(directory): continue dirs.append((name, directory)) else: filename = "%s:%s" % (revision, path) try: content = subprocess.check_output(["git", "show", filename], stderr=_devnull) except subprocess.CalledProcessError as e: if e.returncode != 128: raise return [] # ignore error lines = content.split("\n") if not lines[0].startswith("tree ") or lines[1] != "": raise RuntimeError("Unexpected output from 'git show %s'" % filename) for name in lines[2:]: if name == "" or name[-1] != "/": continue name = name[:-1] dirs.append((name, os.path.join(path, name))) return dirs def read_patchset(revision = None): """Read information about all patchsets for a specific revision.""" unique_id = itertools.count() all_patches = {} name_to_id = {} all_bugids = set() categories = {} # Read in sorted order (to ensure created Makefile doesn't change too much) for name, directory in sorted(enum_directories(revision, config.path_patches)): patch = PatchSet(name, directory) if revision is None: # If its the latest revision, then request additional information if not os.path.isdir(directory): raise RuntimeError("Unable to open directory %s" % directory) # Enumerate .patch files in the given directory, enumerate individual patches and affected files for f in sorted(os.listdir(directory)): if not re.match("^[0-9]{4}-.*\\.patch$", f): continue if f.startswith(config.path_IfDefined): continue if not os.path.isfile(os.path.join(directory, f)): continue patch.files.append(f) for p in patchutils.read_patch(os.path.join(directory, f)): patch.modified_files.add(p.modified_file) patch.patches.append(p) # No single patch within this directory, ignore it if len(patch.patches) == 0: del patch continue i = next(unique_id) all_patches[i] = patch name_to_id[name] = i # Now read the definition files in a second step for i, patch in all_patches.iteritems(): try: filename = os.path.join(os.path.join(config.path_patches, patch.name), "definition") if revision is None: with open(filename) as fp: content = fp.read() else: filename = "%s:%s" % (revision, filename) content = subprocess.check_output(["git", "show", filename], stderr=_devnull) except (IOError, subprocess.CalledProcessError): continue # Skip this definition file for line in content.split("\n"): if line.startswith("#"): continue tmp = line.split(":", 1) if len(tmp) != 2: continue key, val = tmp[0].lower(), tmp[1].strip() if key == "depends": if not name_to_id.has_key(val): raise PatchUpdaterError("Definition file %s references unknown dependency %s" % (filename, val)) patch.depends.add(name_to_id[val]) elif key == "apply-after": for j, other_patch in all_patches.iteritems(): if i != j and any([fnmatch.fnmatch(f, val) for f in other_patch.modified_files]): patch.auto_depends.add(j) elif key == "category": val = "category-%s" % val if name_to_id.has_key(val): raise PatchUpdaterError("Category name in definition file %s collides with patchset %s" % (filename, val)) if not categories.has_key(val): categories[val] = set() categories[val].add(i) elif key == "fixes": r = re.match("^[0-9]+$", val) if r: bugid = int(val) patch.fixes.append((bugid, None)) all_bugids.add(bugid) continue r = re.match("^\\[ *([0-9]+) *\\](.*)$", val) if r: bugid = int(r.group(1)) patch.fixes.append((bugid, r.group(2).strip())) all_bugids.add(bugid) continue patch.fixes.append((None, val)) elif key == "disabled": patch.disabled = _parse_int(val) elif key == "ifdefined": patch.ifdefined = val elif revision is None: print "WARNING: Ignoring unknown command in definition file %s: %s" % (filename, line) # Add virtual targets for all the categories for category, indices in categories.iteritems(): patch = PatchSet(category, directory) patch.depends = indices i = next(unique_id) all_patches[i] = patch name_to_id[name] = i # To simplify the task of keeping the bug list up-to-date, list all bugs # which might require attention. if revision is None: once = True for bugid, bug in sorted(_winebugs_query(all_bugids).items()): if bug['bug_status'] not in ["UNCONFIRMED", "NEW", "ASSIGNED", "REOPENED"]: if once: print "" print "WARNING: The following bugs might require attention:" print "" once = False print " #%d - \"%s\" - %s %s" % (bugid, bug['short_desc'], bug['bug_status'], bug['resolution'] if bug['resolution'] else "") print "" return all_patches def causal_time_combine(a, b): """Combines two timestamps into a new one.""" return [max(a, b) for a, b in zip(a, b)] def causal_time_smaller(a, b): """Checks if timestamp a is smaller than timestamp b.""" return all([i <= j for i, j in zip(a,b)]) and any([i < j for i, j in zip(a,b)]) def causal_time_relation(all_patches, indices): """Checks if the dependencies of patches are compatible with a specific apply order.""" for i, j in _pairs(indices): if causal_time_smaller(all_patches[j].verify_time, all_patches[i].verify_time): return False return True def causal_time_relation_any(all_patches, indices): """Similar to causal_time_relation(), but also check all possible permutations of indices.""" for i, j in _pairs(indices): if not (causal_time_smaller(all_patches[i].verify_time, all_patches[j].verify_time) or \ causal_time_smaller(all_patches[j].verify_time, all_patches[i].verify_time)): return False return True def contains_binary_patch(all_patches, indices, filename): """Checks if any patch with given indices affecting filename is a binary patch.""" for i in indices: for patch in all_patches[i].patches: if patch.modified_file == filename and patch.is_binary(): return True return False def get_wine_file(filename): """Return the content of a file.""" entry = "%s:%s" % (latest_wine_commit, filename) result = tempfile.NamedTemporaryFile() try: content = subprocess.check_call(["git", "show", entry], cwd=config.path_wine, \ stdout=result, stderr=_devnull) except subprocess.CalledProcessError as e: if e.returncode != 128: raise result.flush() # shouldn't be necessary because the subprocess writes directly to the fd return result def extract_patch(patchset, filename): """Extract all changes to a specific file from a patchset.""" p = tempfile.NamedTemporaryFile() m = hashlib.sha256() for patch in patchset.patches: if patch.modified_file != filename: continue for chunk in patch.read_chunks(): p.write(chunk) m.update(chunk) p.write("\n") m.update("\n") p.flush() return (m.digest(), p) def select_patches(all_patches, indices, filename): """Create a temporary patch file for each patchset and calculate the checksum.""" selected_patches = {} for i in indices: selected_patches[i] = extract_patch(all_patches[i], filename) return selected_patches def resolve_dependencies(all_patches, index = None, depends = None): """Returns a sorted list with all dependencies for a given patch.""" def _resolve(depends): for i in depends: # Check for disabled patch if all_patches[i].disabled: raise PatchUpdaterError("Encountered dependency on disabled patchset %s" % all_patches[i].name) # Dependencies already resolved if all_patches[i].verify_resolved > 0: continue # Detect circular dependency if all_patches[i].verify_resolved < 0: raise PatchUpdaterError("Circular dependency while trying to resolve %s" % all_patches[i].name) # Recusively resolve dependencies all_patches[i].verify_resolved = -1 _resolve(all_patches[i].depends) _resolve(all_patches[i].auto_depends) all_patches[i].verify_resolved = 1 resolved.append(i) for _, patch in all_patches.iteritems(): patch.verify_resolved = 0 resolved = [] if depends is None: depends = all_patches[index].depends _resolve(depends) return resolved def generate_ifdefined(all_patches): """Update autogenerated ifdefined patches, which can be used to selectively disable features at compile time.""" enabled_patches = dict([(i, patch) for i, patch in all_patches.iteritems() if not patch.disabled]) for i, patch in enabled_patches.iteritems(): if patch.ifdefined is None: continue filename = os.path.join(patch.directory, config.path_IfDefined) with open(filename, "wb") as fp: fp.write("From: Wine Staging Team \n") fp.write("Subject: Autogenerated #ifdef patch for %s.\n" % patch.name) fp.write("\n") depends = resolve_dependencies(enabled_patches, i) for f in patch.modified_files: # Reconstruct the state after applying the dependencies original = get_wine_file(f) for _, (_, p) in select_patches(enabled_patches, depends, f).iteritems(): original = patchutils.apply_patch(original, p, fuzz=0) # Now apply the main patch p = extract_patch(patch, f)[1] patched = patchutils.apply_patch(original, p, fuzz=0) # Now get the diff between both diff = patchutils.generate_ifdef_patch(original, patched, ifdef=patch.ifdefined) if diff is not None: fp.write("diff --git a/%s b/%s\n" % (f, f)) fp.write("--- a/%s\n" % f) fp.write("+++ b/%s\n" % f) while True: buf = diff.read(16384) if buf == "": break fp.write(buf) diff.close() # Close the file fp.close() # Add changes to git subprocess.call(["git", "add", filename]) # Add the autogenerated file as a last patch patch.files.append(os.path.basename(filename)) for p in patchutils.read_patch(filename): assert p.modified_file in patch.modified_files patch.patches.append(p) def generate_script(all_patches): """Resolve dependencies, and afterwards check if everything applies properly.""" depends = sorted([i for i, patch in all_patches.iteritems() if not patch.disabled]) resolved = resolve_dependencies(all_patches, depends=depends) max_patches = max(resolved) + 1 # Generate timestamps based on dependencies, still required for binary patches # Find out which files are modified by multiple patches modified_files = {} for i, patch in [(i, all_patches[i]) for i in resolved]: patch.verify_time = [0]*max_patches patch.verify_time[i] += 1 for j in patch.depends: patch.verify_time = causal_time_combine(patch.verify_time, all_patches[j].verify_time) for f in patch.modified_files: if f not in modified_files: modified_files[f] = [] modified_files[f].append(i) # Check dependencies dependency_cache = _load_dict(config.path_cache) pool = multiprocessing.pool.ThreadPool(processes=4) try: for filename, indices in modified_files.iteritems(): # If one of patches is a binary patch, then we cannot / won't verify it - require dependencies in this case if contains_binary_patch(all_patches, indices, filename): if not causal_time_relation_any(all_patches, indices): raise PatchUpdaterError("Because of binary patch modifying file %s the following patches need explicit dependencies: %s" % (filename, ", ".join([all_patches[i].name for i in indices]))) continue original_content = get_wine_file(filename) original_hash = _sha256(original_content) selected_patches = select_patches(all_patches, indices, filename) # Generate a unique id based on the original content, the selected patches # and the dependency information. Since this information only has to be compared # we can throw it into a single hash. m = hashlib.sha256() m.update(original_hash) for i in indices: m.update("P%s" % selected_patches[i][0]) for j in indices: if causal_time_smaller(all_patches[j].verify_time, all_patches[i].verify_time): m.update("D%s" % selected_patches[j][0]) unique_hash = m.digest() # Skip checks if it matches the information from the cache try: if dependency_cache[filename] == unique_hash: continue except KeyError: pass # Show a progress bar while applying the patches - this task might take some time chunk_size = 20 with progressbar.ProgressBar(desc=filename, total=2 ** len(indices) / chunk_size) as progress: def test_apply(bitstring): set_apply = [(i, all_patches[i]) for u, i in zip(bitstring, indices) if u] set_skip = [(i, all_patches[i]) for u, i in zip(bitstring, indices) if not u] # Check if there is any patch2 which depends directly or indirectly on patch1. # If this is the case we found an impossible situation, we can be skipped in this test. for i, patch1 in set_apply: for j, patch2 in set_skip: if causal_time_smaller(patch2.verify_time, patch1.verify_time): return True # we can skip this test try: original = original_content for i, _ in set_apply: original = patchutils.apply_patch(original, selected_patches[i][1], fuzz=0) except patchutils.PatchApplyError: return False return True # everything is fine def test_apply_seq(bitstrings): for bitstring in bitstrings: if not test_apply(bitstring): return False return True it = _split_seq(itertools.product([0,1], repeat=len(indices)), chunk_size) for k, res in enumerate(pool.imap_unordered(test_apply_seq, it)): if not res: progress.finish("") raise PatchUpdaterError("Changes to file %s don't apply: %s" % (filename, ", ".join([all_patches[i].name for i in indices]))) progress.update(k) # Update the dependency cache dependency_cache[filename] = unique_hash finally: pool.close() _save_dict(config.path_cache, dependency_cache) # Generate code for helper functions lines = [] lines.append("# Enable or disable all patchsets\n") lines.append("patch_enable_all ()\n") lines.append("{\n") for i, patch in sorted([(i, all_patches[i]) for i in resolved], key=lambda x:x[1].name): patch.variable = "enable_%s" % patch.name.replace("-","_").replace(".","_") lines.append("\t%s=\"$1\"\n" % patch.variable) lines.append("}\n") lines.append("\n") lines.append("# Enable or disable a specific patchset\n") lines.append("patch_enable ()\n") lines.append("{\n") lines.append("\tcase \"$1\" in\n") for i, patch in sorted([(i, all_patches[i]) for i in resolved], key=lambda x:x[1].name): lines.append("\t\t%s)\n" % patch.name) lines.append("\t\t\t%s=\"$2\"\n" % patch.variable) lines.append("\t\t\t;;\n") lines.append("\t\t*)\n") lines.append("\t\t\treturn 1\n") lines.append("\t\t\t;;\n") lines.append("\tesac\n") lines.append("\treturn 0\n") lines.append("}\n") lines_helpers = lines # Generate code for dependency resolver lines = [] for i, patch in [(i, all_patches[i]) for i in reversed(resolved)]: if len(patch.depends): lines.append("if test \"$%s\" -eq 1; then\n" % patch.variable) for j in sorted(patch.depends): lines.append("\tif test \"$%s\" -gt 1; then\n" % all_patches[j].variable) lines.append("\t\tabort \"Patchset %s disabled, but %s depends on that.\"\n" % (all_patches[j].name, patch.name)) lines.append("\tfi\n") for j in sorted(patch.depends): lines.append("\t%s=1\n" % all_patches[j].variable) lines.append("fi\n\n") lines_resolver = lines # Generate code for applying all patchsets lines = [] for i, patch in [(i, all_patches[i]) for i in resolved]: # Categories do not have any files associated, so just skip over if len(patch.files) == 0: continue lines.append("# Patchset %s\n" % patch.name) lines.append("# |\n") # List all bugs fixed by this patchset if any([bugid is not None for bugid, bugname in patch.fixes]): lines.append("# | This patchset fixes the following Wine bugs:\n") for bugid, bugname in patch.fixes: if bugid is not None: lines.append("# | *\t%s\n" % "\n# | \t".join(textwrap.wrap("[#%d] %s" % (bugid, bugname), 120))) lines.append("# |\n") # List all modified files lines.append("# | Modified files:\n") lines.append("# | *\t%s\n" % "\n# | \t".join(textwrap.wrap(", ".join(sorted(patch.modified_files)), 120))) lines.append("# |\n") lines.append("if test \"$%s\" -eq 1; then\n" % patch.variable) for f in patch.files: lines.append("\tpatch_apply %s\n" % os.path.join(patch.name, f)) if len(patch.patches): lines.append("\t(\n") for p in _unique(patch.patches, key=lambda p: (p.patch_author, p.patch_subject, p.patch_revision)): lines.append("\t\techo '+ { \"%s\", \"%s\", %d },';\n" % (_escape(p.patch_author), _escape(p.patch_subject), p.patch_revision)) lines.append("\t) >> \"$patchlist\"\n") lines.append("fi\n\n") lines_apply = lines with open(config.path_template_script) as template_fp: template = template_fp.read() with open(config.path_script, "w") as fp: fp.write(template.format(latest_staging_version=_latest_staging_version(), latest_wine_commit=latest_wine_commit, patch_helpers="".join(lines_helpers).rstrip("\n"), patch_resolver="".join(lines_resolver).rstrip("\n"), patch_apply="".join(lines_apply).rstrip("\n"))) # Add changes to git subprocess.call(["git", "add", config.path_script]) def generate_markdown(all_patches, stable_patches): """Generate README.md including information about specific patches and bugfixes.""" def _format_bug(mode, bugid, bugname): if mode < 0: bugname = "~~%s~~" % bugname if bugid is None: return "* %s" % bugname return "* %s ([Wine Bug #%d](https://bugs.winehq.org/show_bug.cgi?id=%d))" % \ (bugname, bugid, bugid) #, short_desc.replace("\\", "\\\\").replace("\"", "\\\"")) all_fixes = {} # Get fixes for current version for _, patch in all_patches.iteritems(): for bugid, bugname in patch.fixes: key = bugid if bugid is not None else bugname all_fixes[key] = [1, bugid, bugname] # Compare with fixes for latest stable version for _, patch in stable_patches.iteritems(): for bugid, bugname in patch.fixes: key = bugid if bugid is not None else bugname if all_fixes.has_key(key): all_fixes[key][0] = 0 else: all_fixes[key] = [-1, bugid, bugname] # Generate lists for all new and old fixes new_fixes = [(mode, bugid, bugname) for dummy, (mode, bugid, bugname) in all_fixes.iteritems() if mode > 0] old_fixes = [(mode, bugid, bugname) for dummy, (mode, bugid, bugname) in all_fixes.iteritems() if mode <= 0] # List of old fixes is not available when releasing a new version if len(old_fixes) == 0: old_fixes = new_fixes new_fixes = [] # Generate information for current version lines = [] if len(new_fixes): lines.append("**Bug fixes and features included in the next upcoming release [%d]:**" % len(new_fixes)) lines.append("") for mode, bugid, bugname in sorted(new_fixes, key=lambda x: x[2]): lines.append(_format_bug(mode, bugid, bugname)) lines.append("") lines.append("") lines.append("**Bug fixes and features in Wine Staging %s [%d]:**" % (latest_staging_version, len(old_fixes))) lines.append("") lines.append("*Note: The following list only contains features and bug fixes which are not") lines.append("yet available in vanilla Wine. They are removed from the list as soon as they") lines.append("are included upstream. The list also includes features and fixes from previous") lines.append("releases, take a look at the") lines.append("[changelog](https://github.com/wine-compholio/wine-staging/blob/master/debian/changelog)") lines.append("for more details.*") lines.append("") for mode, bugid, bugname in sorted(old_fixes, key=lambda x: x[2]): lines.append(_format_bug(mode, bugid, bugname)) # Update README.md with open(config.path_template_README_md) as template_fp: template = template_fp.read() with open(config.path_README_md, "w") as fp: fp.write(template.format(fixes="\n".join(lines))) # Add changes to git subprocess.call(["git", "add", config.path_README_md]) def wrap_changelog(): lines = [] with open(config.path_changelog) as fp: for line in fp: if line.startswith(" *") and len(line.rstrip("\n")) > 80: wrapped = textwrap.wrap(line[3:].strip(), 80 - 4) lines.append(" * %s\n" % "\n ".join(wrapped)) else: lines.append(line) with open(config.path_changelog, "w") as fp: for line in lines: fp.write(line) # Add changes to git subprocess.call(["git", "add", config.path_changelog]) if __name__ == "__main__": # Hack to avoid KeyboardInterrupts on different threads def _sig_int(signum=None, frame=None): signal.signal(signal.SIGINT, signal.SIG_IGN) raise RuntimeError("CTRL+C pressed") signal.signal(signal.SIGINT, _sig_int) try: # Get information about Wine and Staging version latest_wine_commit = _latest_wine_commit(sys.argv[1] if len(sys.argv) >= 2 else None) latest_staging_version = _latest_staging_version(only_stable=True) # Read current and stable patches all_patches = read_patchset() stable_patches = read_patchset(revision="v%s" % latest_staging_version) generate_ifdefined(all_patches) generate_script(all_patches) generate_markdown(all_patches, stable_patches) wrap_changelog() except PatchUpdaterError as e: print "" print "ERROR: %s" % e print "" exit(1)