import os, stat, socket import re import sys import tempfile tempprefix = 'hg-hghave-' 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) def has_baz(): return matchoutput('baz --version 2>&1', r'baz Bazaar version') def has_bzr(): try: import bzrlib return bzrlib.__doc__ is not None except ImportError: return False def has_bzr114(): try: import bzrlib return (bzrlib.__doc__ is not None and bzrlib.version_info[:2] >= (1, 14)) except ImportError: return False def has_cvs(): re = r'Concurrent Versions System.*?server' return matchoutput('cvs --version 2>&1', re) and not has_msys() def has_darcs(): return matchoutput('darcs --version', r'2\.[2-9]', True) def has_mtn(): return matchoutput('mtn --version', r'monotone', True) and not matchoutput( 'mtn --version', r'monotone 0\.', True) 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 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 & 0777 new_file_has_exec = m & EXECFLAGS os.chmod(fn, m ^ EXECFLAGS) exec_flags_cannot_flip = ((os.stat(fn).st_mode & 0777) == 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) 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) def has_inotify(): try: import hgext.inotify.linux.watcher except ImportError: return False name = tempfile.mktemp(dir='.', prefix=tempprefix) sock = socket.socket(socket.AF_UNIX) try: sock.bind(name) except socket.error, err: return False sock.close() os.unlink(name) return True 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 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) def has_lsprof(): try: import _lsprof return True except ImportError: return False def has_gettext(): return matchoutput('msgfmt --version', 'GNU gettext-tools') def has_git(): return matchoutput('git --version 2>&1', r'^git version') def has_docutils(): try: from docutils.core import publish_cmdline return True except ImportError: return False def getsvnversion(): m = matchoutput('svn --version 2>&1', r'^svn,\s+version\s+(\d+)\.(\d+)') if not m: return (0, 0) return (int(m.group(1)), int(m.group(2))) def has_svn15(): return getsvnversion() >= (1, 5) def has_svn13(): return getsvnversion() >= (1, 3) def has_svn(): return matchoutput('svn --version 2>&1', r'^svn, version') and \ matchoutput('svnadmin --version 2>&1', r'^svnadmin, version') 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 def has_p4(): return (matchoutput('p4 -V', r'Rev\. P4/') and matchoutput('p4d -V', r'Rev\. P4D/')) 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 def has_hardlink(): from mercurial import util fh, fn = tempfile.mkstemp(dir='.', prefix=tempprefix) os.close(fh) name = tempfile.mktemp(dir='.', prefix=tempprefix) try: try: util.oslink(fn, name) os.unlink(name) return True except OSError: return False finally: os.unlink(fn) def has_tla(): return matchoutput('tla --version 2>&1', r'The GNU Arch Revision') def has_gpg(): return matchoutput('gpg --version 2>&1', r'GnuPG') def has_unix_permissions(): d = tempfile.mkdtemp(dir='.', prefix=tempprefix) try: fname = os.path.join(d, 'foo') for umask in (077, 007, 022): os.umask(umask) f = open(fname, 'w') f.close() mode = os.stat(fname).st_mode os.unlink(fname) if mode & 0777 != ~umask & 0666: return False return True finally: os.rmdir(d) def has_pyflakes(): return matchoutput("sh -c \"echo 'import re' 2>&1 | pyflakes\"", r":1: 're' imported but unused", True) def has_pygments(): try: import pygments return True except ImportError: return False 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) def has_ssl(): try: import ssl import OpenSSL OpenSSL.SSL.Context return True except ImportError: return False def has_windows(): return os.name == 'nt' def has_system_sh(): return os.name != 'nt' def has_serve(): return os.name != 'nt' # gross approximation def has_tic(): return matchoutput('test -x "`which tic`"', '') def has_msys(): return os.getenv('MSYSTEM') checks = { "true": (lambda: True, "yak shaving"), "false": (lambda: False, "nail clipper"), "baz": (has_baz, "GNU Arch baz client"), "bzr": (has_bzr, "Canonical's Bazaar client"), "bzr114": (has_bzr114, "Canonical's Bazaar client >= 1.14"), "cacheable": (has_cacheable_fs, "cacheable filesystem"), "cvs": (has_cvs, "cvs client/server"), "darcs": (has_darcs, "darcs client"), "docutils": (has_docutils, "Docutils text processing library"), "eol-in-paths": (has_eol_in_paths, "end-of-lines in paths"), "execbit": (has_executablebit, "executable bit"), "fifo": (has_fifo, "named pipes"), "gettext": (has_gettext, "GNU Gettext (msgfmt)"), "git": (has_git, "git command line client"), "gpg": (has_gpg, "gpg client"), "hardlink": (has_hardlink, "hardlinks"), "icasefs": (has_icasefs, "case insensitive file system"), "inotify": (has_inotify, "inotify extension support"), "lsprof": (has_lsprof, "python lsprof module"), "mtn": (has_mtn, "monotone client (>= 1.0)"), "outer-repo": (has_outer_repo, "outer repo"), "p4": (has_p4, "Perforce server and client"), "pyflakes": (has_pyflakes, "Pyflakes python linter"), "pygments": (has_pygments, "Pygments source highlighting library"), "serve": (has_serve, "platform and python can manage 'hg serve -d'"), "ssl": (has_ssl, "python >= 2.6 ssl module and python OpenSSL"), "svn": (has_svn, "subversion client and admin tools"), "svn13": (has_svn13, "subversion client and admin tools >= 1.3"), "svn15": (has_svn15, "subversion client and admin tools >= 1.5"), "svn-bindings": (has_svn_bindings, "subversion python bindings"), "symlink": (has_symlink, "symbolic links"), "system-sh": (has_system_sh, "system() uses sh"), "tic": (has_tic, "terminfo compiler"), "tla": (has_tla, "GNU Arch tla client"), "unix-permissions": (has_unix_permissions, "unix-style permissions"), "windows": (has_windows, "Windows"), "msys": (has_msys, "Windows with MSYS"), }