import os, stat import re import socket import sys import tempfile tempprefix = 'hg-hghave-' checks = { "true": (lambda: True, "yak shaving"), "false": (lambda: False, "nail clipper"), } def check(name, desc): def decorator(func): checks[name] = (func, desc) return func return decorator def matchoutput(cmd, regexp, ignorestatus=False): """Return True if cmd executes successfully and its output is matched by the supplied regular expression. """ r = re.compile(regexp) fh = os.popen(cmd) s = fh.read() try: ret = fh.close() except IOError: # Happen in Windows test environment ret = 1 return (ignorestatus or ret is None) and r.search(s) @check("baz", "GNU Arch baz client") def has_baz(): return matchoutput('baz --version 2>&1', r'baz Bazaar version') @check("bzr", "Canonical's Bazaar client") def has_bzr(): try: import bzrlib return bzrlib.__doc__ is not None except ImportError: return False @check("bzr114", "Canonical's Bazaar client >= 1.14") def has_bzr114(): try: import bzrlib return (bzrlib.__doc__ is not None and bzrlib.version_info[:2] >= (1, 14)) except ImportError: return False @check("cvs", "cvs client/server") def has_cvs(): re = r'Concurrent Versions System.*?server' return matchoutput('cvs --version 2>&1', re) and not has_msys() @check("cvs112", "cvs client/server >= 1.12") def has_cvs112(): re = r'Concurrent Versions System \(CVS\) 1.12.*?server' return matchoutput('cvs --version 2>&1', re) and not has_msys() @check("darcs", "darcs client") def has_darcs(): return matchoutput('darcs --version', r'2\.[2-9]', True) @check("mtn", "monotone client (>= 1.0)") def has_mtn(): return matchoutput('mtn --version', r'monotone', True) and not matchoutput( 'mtn --version', r'monotone 0\.', True) @check("eol-in-paths", "end-of-lines in paths") def has_eol_in_paths(): try: fd, path = tempfile.mkstemp(dir='.', prefix=tempprefix, suffix='\n\r') os.close(fd) os.remove(path) return True except (IOError, OSError): return False @check("execbit", "executable bit") def has_executablebit(): try: EXECFLAGS = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH fh, fn = tempfile.mkstemp(dir='.', prefix=tempprefix) try: os.close(fh) m = os.stat(fn).st_mode & 0o777 new_file_has_exec = m & EXECFLAGS os.chmod(fn, m ^ EXECFLAGS) exec_flags_cannot_flip = ((os.stat(fn).st_mode & 0o777) == m) finally: os.unlink(fn) except (IOError, OSError): # we don't care, the user probably won't be able to commit anyway return False return not (new_file_has_exec or exec_flags_cannot_flip) @check("icasefs", "case insensitive file system") def has_icasefs(): # Stolen from mercurial.util fd, path = tempfile.mkstemp(dir='.', prefix=tempprefix) os.close(fd) try: s1 = os.stat(path) d, b = os.path.split(path) p2 = os.path.join(d, b.upper()) if path == p2: p2 = os.path.join(d, b.lower()) try: s2 = os.stat(p2) return s2 == s1 except OSError: return False finally: os.remove(path) @check("fifo", "named pipes") def has_fifo(): if getattr(os, "mkfifo", None) is None: return False name = tempfile.mktemp(dir='.', prefix=tempprefix) try: os.mkfifo(name) os.unlink(name) return True except OSError: return False @check("killdaemons", 'killdaemons.py support') def has_killdaemons(): return True @check("cacheable", "cacheable filesystem") def has_cacheable_fs(): from mercurial import util fd, path = tempfile.mkstemp(dir='.', prefix=tempprefix) os.close(fd) try: return util.cachestat(path).cacheable() finally: os.remove(path) @check("lsprof", "python lsprof module") def has_lsprof(): try: import _lsprof _lsprof.Profiler # silence unused import warning return True except ImportError: return False @check("gettext", "GNU Gettext (msgfmt)") def has_gettext(): return matchoutput('msgfmt --version', 'GNU gettext-tools') @check("git", "git command line client") def has_git(): return matchoutput('git --version 2>&1', r'^git version') @check("docutils", "Docutils text processing library") def has_docutils(): try: from docutils.core import publish_cmdline publish_cmdline # silence unused import return True except ImportError: return False def getsvnversion(): m = matchoutput('svn --version --quiet 2>&1', r'^(\d+)\.(\d+)') if not m: return (0, 0) return (int(m.group(1)), int(m.group(2))) @check("svn15", "subversion client and admin tools >= 1.5") def has_svn15(): return getsvnversion() >= (1, 5) @check("svn13", "subversion client and admin tools >= 1.3") def has_svn13(): return getsvnversion() >= (1, 3) @check("svn", "subversion client and admin tools") def has_svn(): return matchoutput('svn --version 2>&1', r'^svn, version') and \ matchoutput('svnadmin --version 2>&1', r'^svnadmin, version') @check("svn-bindings", "subversion python bindings") def has_svn_bindings(): try: import svn.core version = svn.core.SVN_VER_MAJOR, svn.core.SVN_VER_MINOR if version < (1, 4): return False return True except ImportError: return False @check("p4", "Perforce server and client") def has_p4(): return (matchoutput('p4 -V', r'Rev\. P4/') and matchoutput('p4d -V', r'Rev\. P4D/')) @check("symlink", "symbolic links") def has_symlink(): if getattr(os, "symlink", None) is None: return False name = tempfile.mktemp(dir='.', prefix=tempprefix) try: os.symlink(".", name) os.unlink(name) return True except (OSError, AttributeError): return False @check("hardlink", "hardlinks") def has_hardlink(): from mercurial import util fh, fn = tempfile.mkstemp(dir='.', prefix=tempprefix) os.close(fh) name = tempfile.mktemp(dir='.', prefix=tempprefix) try: util.oslink(fn, name) os.unlink(name) return True except OSError: return False finally: os.unlink(fn) @check("tla", "GNU Arch tla client") def has_tla(): return matchoutput('tla --version 2>&1', r'The GNU Arch Revision') @check("gpg", "gpg client") def has_gpg(): return matchoutput('gpg --version 2>&1', r'GnuPG') @check("unix-permissions", "unix-style permissions") def has_unix_permissions(): d = tempfile.mkdtemp(dir='.', prefix=tempprefix) try: fname = os.path.join(d, 'foo') for umask in (0o77, 0o07, 0o22): os.umask(umask) f = open(fname, 'w') f.close() mode = os.stat(fname).st_mode os.unlink(fname) if mode & 0o777 != ~umask & 0o666: return False return True finally: os.rmdir(d) @check("unix-socket", "AF_UNIX socket family") def has_unix_socket(): return getattr(socket, 'AF_UNIX', None) is not None @check("root", "root permissions") def has_root(): return getattr(os, 'geteuid', None) and os.geteuid() == 0 @check("pyflakes", "Pyflakes python linter") def has_pyflakes(): return matchoutput("sh -c \"echo 'import re' 2>&1 | pyflakes\"", r":1: 're' imported but unused", True) @check("pygments", "Pygments source highlighting library") def has_pygments(): try: import pygments pygments.highlight # silence unused import warning return True except ImportError: return False @check("json", "some json module available") def has_json(): try: import json json.dumps return True except ImportError: try: import simplejson as json json.dumps return True except ImportError: pass return False @check("outer-repo", "outer repo") def has_outer_repo(): # failing for other reasons than 'no repo' imply that there is a repo return not matchoutput('hg root 2>&1', r'abort: no repository found', True) @check("ssl", ("(python >= 2.6 ssl module and python OpenSSL) " "OR python >= 2.7.9 ssl")) def has_ssl(): try: import ssl if getattr(ssl, 'create_default_context', False): return True import OpenSSL OpenSSL.SSL.Context return True except ImportError: return False @check("sslcontext", "python >= 2.7.9 ssl") def has_sslcontext(): try: import ssl ssl.SSLContext return True except (ImportError, AttributeError): return False @check("defaultcacerts", "can verify SSL certs by system's CA certs store") def has_defaultcacerts(): from mercurial import sslutil return sslutil._defaultcacerts() != '!' @check("windows", "Windows") def has_windows(): return os.name == 'nt' @check("system-sh", "system() uses sh") def has_system_sh(): return os.name != 'nt' @check("serve", "platform and python can manage 'hg serve -d'") def has_serve(): return os.name != 'nt' # gross approximation @check("test-repo", "running tests from repository") def has_test_repo(): t = os.environ["TESTDIR"] return os.path.isdir(os.path.join(t, "..", ".hg")) @check("tic", "terminfo compiler and curses module") def has_tic(): try: import curses curses.COLOR_BLUE return matchoutput('test -x "`which tic`"', '') except ImportError: return False @check("msys", "Windows with MSYS") def has_msys(): return os.getenv('MSYSTEM') @check("aix", "AIX") def has_aix(): return sys.platform.startswith("aix") @check("osx", "OS X") def has_osx(): return sys.platform == 'darwin' @check("absimport", "absolute_import in __future__") def has_absimport(): import __future__ from mercurial import util return util.safehasattr(__future__, "absolute_import") @check("py3k", "running with Python 3.x") def has_py3k(): return 3 == sys.version_info[0]