mercurial/posix.py
author Patrick Mezard <patrick@mezard.eu>
Wed, 08 Aug 2012 21:38:53 +0200
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parent 17203 0cb55b5c19a3
child 17391 fc24c10424d2
permissions -rw-r--r--
Merge with stable
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# posix.py - Posix utility function implementations for Mercurial
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#
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#  Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from i18n import _
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import encoding
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import os, sys, errno, stat, getpass, pwd, grp, tempfile, unicodedata
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posixfile = open
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nulldev = '/dev/null'
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normpath = os.path.normpath
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samestat = os.path.samestat
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oslink = os.link
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unlink = os.unlink
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rename = os.rename
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expandglobs = False
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umask = os.umask(0)
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os.umask(umask)
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def openhardlinks():
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    '''return true if it is safe to hold open file handles to hardlinks'''
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    return True
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def nlinks(name):
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    '''return number of hardlinks for the given file'''
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    return os.lstat(name).st_nlink
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def parsepatchoutput(output_line):
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    """parses the output produced by patch and returns the filename"""
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    pf = output_line[14:]
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    if os.sys.platform == 'OpenVMS':
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        if pf[0] == '`':
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            pf = pf[1:-1] # Remove the quotes
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    else:
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        if pf.startswith("'") and pf.endswith("'") and " " in pf:
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            pf = pf[1:-1] # Remove the quotes
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    return pf
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def sshargs(sshcmd, host, user, port):
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    '''Build argument list for ssh'''
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    args = user and ("%s@%s" % (user, host)) or host
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    return port and ("%s -p %s" % (args, port)) or args
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def isexec(f):
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    """check whether a file is executable"""
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    return (os.lstat(f).st_mode & 0100 != 0)
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def setflags(f, l, x):
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    s = os.lstat(f).st_mode
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    if l:
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        if not stat.S_ISLNK(s):
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            # switch file to link
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            fp = open(f)
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            data = fp.read()
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            fp.close()
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            os.unlink(f)
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            try:
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                os.symlink(data, f)
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            except OSError:
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                # failed to make a link, rewrite file
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                fp = open(f, "w")
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                fp.write(data)
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                fp.close()
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        # no chmod needed at this point
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        return
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    if stat.S_ISLNK(s):
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        # switch link to file
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        data = os.readlink(f)
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        os.unlink(f)
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        fp = open(f, "w")
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        fp.write(data)
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        fp.close()
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        s = 0666 & ~umask # avoid restatting for chmod
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    sx = s & 0100
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    if x and not sx:
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        # Turn on +x for every +r bit when making a file executable
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        # and obey umask.
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        os.chmod(f, s | (s & 0444) >> 2 & ~umask)
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    elif not x and sx:
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        # Turn off all +x bits
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        os.chmod(f, s & 0666)
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def copymode(src, dst, mode=None):
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    '''Copy the file mode from the file at path src to dst.
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    If src doesn't exist, we're using mode instead. If mode is None, we're
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    using umask.'''
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    try:
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        st_mode = os.lstat(src).st_mode & 0777
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    except OSError, inst:
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        if inst.errno != errno.ENOENT:
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            raise
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        st_mode = mode
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        if st_mode is None:
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            st_mode = ~umask
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        st_mode &= 0666
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    os.chmod(dst, st_mode)
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def checkexec(path):
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    """
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    Check whether the given path is on a filesystem with UNIX-like exec flags
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    Requires a directory (like /foo/.hg)
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    """
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    # VFAT on some Linux versions can flip mode but it doesn't persist
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    # a FS remount. Frequently we can detect it if files are created
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    # with exec bit on.
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    try:
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        EXECFLAGS = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
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        fh, fn = tempfile.mkstemp(dir=path, prefix='hg-checkexec-')
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        try:
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            os.close(fh)
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            m = os.stat(fn).st_mode & 0777
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            new_file_has_exec = m & EXECFLAGS
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            os.chmod(fn, m ^ EXECFLAGS)
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            exec_flags_cannot_flip = ((os.stat(fn).st_mode & 0777) == m)
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        finally:
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            os.unlink(fn)
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    except (IOError, OSError):
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        # we don't care, the user probably won't be able to commit anyway
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        return False
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    return not (new_file_has_exec or exec_flags_cannot_flip)
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def checklink(path):
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    """check whether the given path is on a symlink-capable filesystem"""
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    # mktemp is not racy because symlink creation will fail if the
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    # file already exists
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    name = tempfile.mktemp(dir=path, prefix='hg-checklink-')
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    try:
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        os.symlink(".", name)
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        os.unlink(name)
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        return True
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    except (OSError, AttributeError):
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        return False
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   141
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def checkosfilename(path):
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    '''Check that the base-relative path is a valid filename on this platform.
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    Returns None if the path is ok, or a UI string describing the problem.'''
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    pass # on posix platforms, every path is ok
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   146
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def setbinary(fd):
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    pass
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def pconvert(path):
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    return path
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def localpath(path):
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    return path
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def samefile(fpath1, fpath2):
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    """Returns whether path1 and path2 refer to the same file. This is only
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    guaranteed to work for files, not directories."""
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    return os.path.samefile(fpath1, fpath2)
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   160
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   161
def samedevice(fpath1, fpath2):
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    """Returns whether fpath1 and fpath2 are on the same device. This is only
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    guaranteed to work for files, not directories."""
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    st1 = os.lstat(fpath1)
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    st2 = os.lstat(fpath2)
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   166
    return st1.st_dev == st2.st_dev
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   167
15488
6eff984d8e76 dirstate: fix case-folding identity for traditional Unix
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   168
# os.path.normcase is a no-op, which doesn't help us on non-native filesystems
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   169
def normcase(path):
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    return path.lower()
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   172
if sys.platform == 'darwin':
10757
ab3782458827 posix: move a global fcntl import to keep it from breaking jython
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   173
    import fcntl # only needed on darwin, missing on jython
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1fa41d1f1351 posix: add extended support for OS X path folding
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   174
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   175
    def normcase(path):
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   176
        try:
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   177
            u = path.decode('utf-8')
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   178
        except UnicodeDecodeError:
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   179
            # percent-encode any characters that don't round-trip
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            p2 = path.decode('utf-8', 'ignore').encode('utf-8')
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   181
            s = ""
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            pos = 0
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   183
            for c in path:
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   184
                if p2[pos:pos + 1] == c:
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   185
                    s += c
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   186
                    pos += 1
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   187
                else:
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   188
                    s += "%%%02X" % ord(c)
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diff changeset
   189
            u = s.decode('utf-8')
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diff changeset
   190
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   191
        # Decompose then lowercase (HFS+ technote specifies lower)
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diff changeset
   192
        return unicodedata.normalize('NFD', u).lower().encode('utf-8')
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diff changeset
   193
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   194
    def realpath(path):
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   195
        '''
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   196
        Returns the true, canonical file system path equivalent to the given
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   197
        path.
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   198
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   199
        Equivalent means, in this case, resulting in the same, unique
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   200
        file system link to the path. Every file system entry, whether a file,
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   201
        directory, hard link or symbolic link or special, will have a single
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   202
        path preferred by the system, but may allow multiple, differing path
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   203
        lookups to point to it.
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   204
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        Most regular UNIX file systems only allow a file system entry to be
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   206
        looked up by its distinct path. Obviously, this does not apply to case
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   207
        insensitive file systems, whether case preserving or not. The most
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   208
        complex issue to deal with is file systems transparently reencoding the
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   209
        path, such as the non-standard Unicode normalisation required for HFS+
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   210
        and HFSX.
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   211
        '''
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   212
        # Constants copied from /usr/include/sys/fcntl.h
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   213
        F_GETPATH = 50
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   214
        O_SYMLINK = 0x200000
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diff changeset
   215
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   216
        try:
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   217
            fd = os.open(path, O_SYMLINK)
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   218
        except OSError, err:
13007
e98bf6948092 posix: remove is-comparison between integers
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parents: 12689
diff changeset
   219
            if err.errno == errno.ENOENT:
9238
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   220
                return path
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diff changeset
   221
            raise
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parents: 9031
diff changeset
   222
40196d036a71 util: add realpath() for getting the 'true' path.
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   223
        try:
40196d036a71 util: add realpath() for getting the 'true' path.
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diff changeset
   224
            return fcntl.fcntl(fd, F_GETPATH, '\0' * 1024).rstrip('\0')
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   225
        finally:
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diff changeset
   226
            os.close(fd)
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ab600a25dfc0 posix: workaround for os.path.realpath bug in Python 2.4.1 and before
Thomas Arendsen Hein <thomas@intevation.de>
parents: 15056
diff changeset
   227
elif sys.version_info < (2, 4, 2, 'final'):
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diff changeset
   228
    # Workaround for http://bugs.python.org/issue1213894 (os.path.realpath
ab600a25dfc0 posix: workaround for os.path.realpath bug in Python 2.4.1 and before
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   229
    # didn't resolve symlinks that were the first component of the path.)
ab600a25dfc0 posix: workaround for os.path.realpath bug in Python 2.4.1 and before
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diff changeset
   230
    def realpath(path):
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diff changeset
   231
        if os.path.isabs(path):
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   232
            return os.path.realpath(path)
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diff changeset
   233
        else:
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   234
            return os.path.realpath('./' + path)
9238
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   235
else:
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   236
    # Fallback to the likely inadequate Python builtin function.
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   237
    realpath = os.path.realpath
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   238
15711
c51c9dc13a58 cygwin: add cygwin specific normcase logic
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   239
if sys.platform == 'cygwin':
c51c9dc13a58 cygwin: add cygwin specific normcase logic
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diff changeset
   240
    # workaround for cygwin, in which mount point part of path is
c51c9dc13a58 cygwin: add cygwin specific normcase logic
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parents: 15672
diff changeset
   241
    # treated as case sensitive, even though underlying NTFS is case
c51c9dc13a58 cygwin: add cygwin specific normcase logic
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   242
    # insensitive.
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diff changeset
   243
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
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   244
    # default mount points
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   245
    cygwinmountpoints = sorted([
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   246
            "/usr/bin",
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   247
            "/usr/lib",
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   248
            "/cygdrive",
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   249
            ], reverse=True)
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   250
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   251
    # use upper-ing as normcase as same as NTFS workaround
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   252
    def normcase(path):
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   253
        pathlen = len(path)
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   254
        if (pathlen == 0) or (path[0] != os.sep):
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   255
            # treat as relative
17203
0cb55b5c19a3 util, posix: eliminate encodinglower and encodingupper
Adrian Buehlmann <adrian@cadifra.com>
parents: 16726
diff changeset
   256
            return encoding.upper(path)
15711
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   257
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   258
        # to preserve case of mountpoint part
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   259
        for mp in cygwinmountpoints:
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   260
            if not path.startswith(mp):
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   261
                continue
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   262
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   263
            mplen = len(mp)
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   264
            if mplen == pathlen: # mount point itself
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   265
                return mp
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   266
            if path[mplen] == os.sep:
17203
0cb55b5c19a3 util, posix: eliminate encodinglower and encodingupper
Adrian Buehlmann <adrian@cadifra.com>
parents: 16726
diff changeset
   267
                return mp + encoding.upper(path[mplen:])
15711
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   268
17203
0cb55b5c19a3 util, posix: eliminate encodinglower and encodingupper
Adrian Buehlmann <adrian@cadifra.com>
parents: 16726
diff changeset
   269
        return encoding.upper(path)
15711
c51c9dc13a58 cygwin: add cygwin specific normcase logic
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 15672
diff changeset
   270
16240
95e45abe7e8e posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents: 15791
diff changeset
   271
    # Cygwin translates native ACLs to POSIX permissions,
95e45abe7e8e posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents: 15791
diff changeset
   272
    # but these translations are not supported by native
95e45abe7e8e posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents: 15791
diff changeset
   273
    # tools, so the exec bit tends to be set erroneously.
95e45abe7e8e posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents: 15791
diff changeset
   274
    # Therefore, disable executable bit access on Cygwin.
95e45abe7e8e posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents: 15791
diff changeset
   275
    def checkexec(path):
95e45abe7e8e posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents: 15791
diff changeset
   276
        return False
95e45abe7e8e posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents: 15791
diff changeset
   277
16241
60cc3a0d2249 posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents: 16240
diff changeset
   278
    # Similarly, Cygwin's symlink emulation is likely to create
60cc3a0d2249 posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents: 16240
diff changeset
   279
    # problems when Mercurial is used from both Cygwin and native
60cc3a0d2249 posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents: 16240
diff changeset
   280
    # Windows, with other native tools, or on shared volumes
60cc3a0d2249 posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents: 16240
diff changeset
   281
    def checklink(path):
60cc3a0d2249 posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents: 16240
diff changeset
   282
        return False
60cc3a0d2249 posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents: 16240
diff changeset
   283
7890
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   284
def shellquote(s):
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   285
    if os.sys.platform == 'OpenVMS':
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   286
        return '"%s"' % s
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   287
    else:
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   288
        return "'%s'" % s.replace("'", "'\\''")
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   289
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   290
def quotecommand(cmd):
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   291
    return cmd
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   292
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   293
def popen(command, mode='r'):
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   294
    return os.popen(command, mode)
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   295
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   296
def testpid(pid):
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   297
    '''return False if pid dead, True if running or not sure'''
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   298
    if os.sys.platform == 'OpenVMS':
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   299
        return True
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   300
    try:
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   301
        os.kill(pid, 0)
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   302
        return True
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   303
    except OSError, inst:
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   304
        return inst.errno != errno.ESRCH
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   305
14234
600e64004eb5 rename explain_exit to explainexit
Adrian Buehlmann <adrian@cadifra.com>
parents: 14233
diff changeset
   306
def explainexit(code):
9517
4368f582c806 util.system: Use subprocess instead of os.system
Mads Kiilerich <mads@kiilerich.com>
parents: 9238
diff changeset
   307
    """return a 2-tuple (desc, code) describing a subprocess status
4368f582c806 util.system: Use subprocess instead of os.system
Mads Kiilerich <mads@kiilerich.com>
parents: 9238
diff changeset
   308
    (codes from kill are negative - not os.system/wait encoding)"""
4368f582c806 util.system: Use subprocess instead of os.system
Mads Kiilerich <mads@kiilerich.com>
parents: 9238
diff changeset
   309
    if code >= 0:
4368f582c806 util.system: Use subprocess instead of os.system
Mads Kiilerich <mads@kiilerich.com>
parents: 9238
diff changeset
   310
        return _("exited with status %d") % code, code
4368f582c806 util.system: Use subprocess instead of os.system
Mads Kiilerich <mads@kiilerich.com>
parents: 9238
diff changeset
   311
    return _("killed by signal %d") % -code, -code
7890
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   312
8657
3fa92c618624 posix: do not use fstat in isowner
Martin Geisler <mg@lazybytes.net>
parents: 8614
diff changeset
   313
def isowner(st):
3fa92c618624 posix: do not use fstat in isowner
Martin Geisler <mg@lazybytes.net>
parents: 8614
diff changeset
   314
    """Return True if the stat object st is from the current user."""
7890
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   315
    return st.st_uid == os.getuid()
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   316
14271
4030630fb59c rename util.find_exe to findexe
Adrian Buehlmann <adrian@cadifra.com>
parents: 14237
diff changeset
   317
def findexe(command):
7890
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   318
    '''Find executable for command searching like which does.
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   319
    If command is a basename then PATH is searched for command.
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   320
    PATH isn't searched if command is an absolute or relative path.
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   321
    If command isn't found None is returned.'''
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   322
    if sys.platform == 'OpenVMS':
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   323
        return command
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   324
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   325
    def findexisting(executable):
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   326
        'Will return executable if existing file'
15499
58f96703a9ab posix: fix findexe() to check for file type and access
Marc-Antoine Ruel <maruel@google.com>
parents: 15488
diff changeset
   327
        if os.path.isfile(executable) and os.access(executable, os.X_OK):
7890
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   328
            return executable
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   329
        return None
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   330
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   331
    if os.sep in command:
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   332
        return findexisting(command)
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   333
16383
f5dd179bfa4a plan9: initial support for plan 9 from bell labs
Steven Stallion <sstallion@gmail.com>
parents: 16241
diff changeset
   334
    if sys.platform == 'plan9':
f5dd179bfa4a plan9: initial support for plan 9 from bell labs
Steven Stallion <sstallion@gmail.com>
parents: 16241
diff changeset
   335
        return findexisting(os.path.join('/bin', command))
f5dd179bfa4a plan9: initial support for plan 9 from bell labs
Steven Stallion <sstallion@gmail.com>
parents: 16241
diff changeset
   336
7890
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   337
    for path in os.environ.get('PATH', '').split(os.pathsep):
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   338
        executable = findexisting(os.path.join(path, command))
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   339
        if executable is not None:
15499
58f96703a9ab posix: fix findexe() to check for file type and access
Marc-Antoine Ruel <maruel@google.com>
parents: 15488
diff changeset
   340
            return executable
7890
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   341
    return None
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   342
14237
4d684d8210a1 rename util.set_signal_handler to setsignalhandler
Adrian Buehlmann <adrian@cadifra.com>
parents: 14235
diff changeset
   343
def setsignalhandler():
7890
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   344
    pass
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   345
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   346
def statfiles(files):
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   347
    'Stat each file in files and yield stat or None if file does not exist.'
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   348
    lstat = os.lstat
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   349
    for nf in files:
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   350
        try:
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   351
            st = lstat(nf)
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   352
        except OSError, err:
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   353
            if err.errno not in (errno.ENOENT, errno.ENOTDIR):
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   354
                raise
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   355
            st = None
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   356
        yield st
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   357
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   358
def getuser():
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   359
    '''return name of current user'''
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   360
    return getpass.getuser()
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   361
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   362
def username(uid=None):
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   363
    """Return the name of the user with the given uid.
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   364
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   365
    If uid is None, return the name of the current user."""
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   366
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   367
    if uid is None:
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   368
        uid = os.getuid()
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   369
    try:
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   370
        return pwd.getpwuid(uid)[0]
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   371
    except KeyError:
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   372
        return str(uid)
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   373
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   374
def groupname(gid=None):
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   375
    """Return the name of the group with the given gid.
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   376
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   377
    If gid is None, return the name of the current group."""
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   378
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   379
    if gid is None:
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   380
        gid = os.getgid()
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   381
    try:
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   382
        return grp.getgrgid(gid)[0]
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   383
    except KeyError:
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff changeset
   384
        return str(gid)
10237
2f7a38f336f4 serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents: 10218
diff changeset
   385
11138
99eee847beaa acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents: 11011
diff changeset
   386
def groupmembers(name):
99eee847beaa acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents: 11011
diff changeset
   387
    """Return the list of members of the group with the given
99eee847beaa acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents: 11011
diff changeset
   388
    name, KeyError if the group does not exist.
99eee847beaa acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents: 11011
diff changeset
   389
    """
99eee847beaa acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents: 11011
diff changeset
   390
    return list(grp.getgrnam(name).gr_mem)
99eee847beaa acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents: 11011
diff changeset
   391
10237
2f7a38f336f4 serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents: 10218
diff changeset
   392
def spawndetached(args):
2f7a38f336f4 serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents: 10218
diff changeset
   393
    return os.spawnvp(os.P_NOWAIT | getattr(os, 'P_DETACH', 0),
2f7a38f336f4 serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents: 10218
diff changeset
   394
                      args[0], args)
2f7a38f336f4 serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents: 10218
diff changeset
   395
10239
8e4be44a676f Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents: 10237
diff changeset
   396
def gethgcmd():
8e4be44a676f Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents: 10237
diff changeset
   397
    return sys.argv[:1]
11010
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   398
12689
c52c629ce19e termwidth: move to ui.ui from util
Augie Fackler <durin42@gmail.com>
parents: 11138
diff changeset
   399
def termwidth():
11010
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   400
    try:
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   401
        import termios, array, fcntl
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   402
        for dev in (sys.stderr, sys.stdout, sys.stdin):
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   403
            try:
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   404
                try:
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   405
                    fd = dev.fileno()
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   406
                except AttributeError:
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   407
                    continue
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   408
                if not os.isatty(fd):
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   409
                    continue
16726
7002bb17cc5e posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents: 16383
diff changeset
   410
                try:
7002bb17cc5e posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents: 16383
diff changeset
   411
                    arri = fcntl.ioctl(fd, termios.TIOCGWINSZ, '\0' * 8)
7002bb17cc5e posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents: 16383
diff changeset
   412
                    width = array.array('h', arri)[1]
7002bb17cc5e posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents: 16383
diff changeset
   413
                    if width > 0:
7002bb17cc5e posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents: 16383
diff changeset
   414
                        return width
7002bb17cc5e posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents: 16383
diff changeset
   415
                except AttributeError:
7002bb17cc5e posix: workaround lack of TIOCGWINSZ on Irix (issue3449)
Mark Round <hg@markround.com>
parents: 16383
diff changeset
   416
                    pass
11010
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   417
            except ValueError:
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   418
                pass
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   419
            except IOError, e:
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   420
                if e[0] == errno.EINVAL:
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   421
                    pass
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   422
                else:
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   423
                    raise
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   424
    except ImportError:
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   425
        pass
18e81d42ee5c util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents: 10264
diff changeset
   426
    return 80
14908
e2b5605501df util: move "default" makedir to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14273
diff changeset
   427
e2b5605501df util: move "default" makedir to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14273
diff changeset
   428
def makedir(path, notindexed):
e2b5605501df util: move "default" makedir to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14273
diff changeset
   429
    os.mkdir(path)
14909
c627fe32c923 util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14908
diff changeset
   430
c627fe32c923 util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14908
diff changeset
   431
def unlinkpath(f):
c627fe32c923 util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14908
diff changeset
   432
    """unlink and remove the directory if it is empty"""
c627fe32c923 util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14908
diff changeset
   433
    os.unlink(f)
c627fe32c923 util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14908
diff changeset
   434
    # try removing directories that might now be empty
c627fe32c923 util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14908
diff changeset
   435
    try:
c627fe32c923 util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14908
diff changeset
   436
        os.removedirs(os.path.dirname(f))
c627fe32c923 util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14908
diff changeset
   437
    except OSError:
c627fe32c923 util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14908
diff changeset
   438
        pass
c627fe32c923 util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14908
diff changeset
   439
14910
570ea0259b0a util: move "default" lookupreg to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14909
diff changeset
   440
def lookupreg(key, name=None, scope=None):
570ea0259b0a util: move "default" lookupreg to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14909
diff changeset
   441
    return None
14911
5b39503157fd util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14910
diff changeset
   442
5b39503157fd util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14910
diff changeset
   443
def hidewindow():
5b39503157fd util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14910
diff changeset
   444
    """Hide current shell window.
5b39503157fd util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14910
diff changeset
   445
5b39503157fd util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14910
diff changeset
   446
    Used to hide the window opened when starting asynchronous
5b39503157fd util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14910
diff changeset
   447
    child process under Windows, unneeded on other systems.
5b39503157fd util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14910
diff changeset
   448
    """
5b39503157fd util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents: 14910
diff changeset
   449
    pass
14926
4e7e63fc685a util: eliminate wildcard imports
Adrian Buehlmann <adrian@cadifra.com>
parents: 14911
diff changeset
   450
14927
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   451
class cachestat(object):
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   452
    def __init__(self, path):
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   453
        self.stat = os.stat(path)
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   454
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   455
    def cacheable(self):
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   456
        return bool(self.stat.st_ino)
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   457
15791
a814f8fcc65a Use explicit integer division
Martin Geisler <mg@aragost.com>
parents: 15711
diff changeset
   458
    __hash__ = object.__hash__
a814f8fcc65a Use explicit integer division
Martin Geisler <mg@aragost.com>
parents: 15711
diff changeset
   459
14927
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   460
    def __eq__(self, other):
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   461
        try:
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   462
            return self.stat == other.stat
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   463
        except AttributeError:
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   464
            return False
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   465
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   466
    def __ne__(self, other):
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   467
        return not self == other
2aa3e07b2f07 posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents: 14926
diff changeset
   468
14926
4e7e63fc685a util: eliminate wildcard imports
Adrian Buehlmann <adrian@cadifra.com>
parents: 14911
diff changeset
   469
def executablepath():
4e7e63fc685a util: eliminate wildcard imports
Adrian Buehlmann <adrian@cadifra.com>
parents: 14911
diff changeset
   470
    return None # available on Windows only