#!/usr/bin/env python # Future imports for Python 2.7, mandatory in 3.0 from __future__ import division from __future__ import print_function from __future__ import unicode_literals import io import os import re import sys import time def P(path): """ Give 'path' as a path relative to the abs_top_srcdir environment variable. """ return os.path.join( os.environ.get('abs_top_srcdir', "."), path) def warn(msg): """ Print an warning message. """ print("WARNING: {}".format(msg), file=sys.stderr) def find_version(infile): """ Given an open file (or some other iterator of lines) holding a configure.ac file, find the current version line. """ for line in infile: m = re.search(r'AC_INIT\(\[tor\],\s*\[([^\]]*)\]\)', line) if m: return m.group(1) return None def update_version_in(infile, outfile, regex, versionline): """ Copy every line from infile to outfile. If any line matches 'regex', replace it with 'versionline'. Return True if any line was changed; false otherwise. 'versionline' is either a string -- in which case it is used literally, or a function that receives the output of 'regex.match'. """ found = False have_changed = False for line in infile: m = regex.match(line) if m: found = True oldline = line if type(versionline) == type(u""): line = versionline else: line = versionline(m) if not line.endswith("\n"): line += "\n" if oldline != line: have_changed = True outfile.write(line) if not found: warn("didn't find any version line to replace in {}".format(infile.name)) return have_changed def replace_on_change(fname, change): """ If "change" is true, replace fname with fname.tmp. Otherwise, delete fname.tmp. Log what we're doing to stderr. """ if not change: print("No change in {}".format(fname)) os.unlink(fname+".tmp") else: print("Updating {}".format(fname)) os.rename(fname+".tmp", fname) def update_file(fname, regex, versionline, encoding="utf-8"): """ Replace any line matching 'regex' in 'fname' with 'versionline'. Do not modify 'fname' if there are no changes made. Use the provided encoding to read and write. """ with io.open(fname, "r", encoding=encoding) as f, \ io.open(fname+".tmp", "w", encoding=encoding) as outf: have_changed = update_version_in(f, outf, regex, versionline) replace_on_change(fname, have_changed) # Find out our version with open(P("configure.ac")) as f: version = find_version(f) # If we have no version, we can't proceed. if version == None: print("No version found in configure.ac", file=sys.stderr()) sys.exit(1) print("The version is {}".format(version)) today = time.strftime("%Y-%m-%d", time.gmtime()) # In configure.ac, we replace the definition of APPROX_RELEASE_DATE # with "{today} for {version}", but only if the version does not match # what is already there. def replace_fn(m): if m.group(1) != version: # The version changed -- we change the date. return u'AC_DEFINE(APPROX_RELEASE_DATE, ["{}"], # for {}'.format(today, version) else: # No changes. return m.group(0) update_file(P("configure.ac"), re.compile(r'AC_DEFINE\(APPROX_RELEASE_DATE.* for (.*)'), replace_fn) # In tor-mingw.nsi.in, we replace the definition of VERSION. update_file(P("contrib/win32build/tor-mingw.nsi.in"), re.compile(r'!define VERSION .*'), u'!define VERSION "{}"'.format(version), encoding="iso-8859-1")