view tests/hghave @ 5369:7530334bf301

revlog: generate trivial deltas against null revision To avoid extra memory usage and performance issues with large files, generate a trivial delta header for deltas against the null revision rather than calling the usual delta generator. We append the delta header to meta rather than prepending it to data to avoid a large allocate and copy.
author Matt Mackall <mpm@selenic.com>
date Wed, 03 Oct 2007 17:17:27 -0500
parents 9400d677efc7
children 190c234c8fa0
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#!/usr/bin/env python
"""Test the running system for features availability. Exit with zero
if all features are there, non-zero otherwise. If a feature name is
prefixed with "no-", the absence of feature is tested.
"""
import optparse
import os
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()
    ret = fh.close()
    return (ignorestatus or ret is None) and r.search(s)

def has_symlink():
    return hasattr(os, "symlink")

def has_fifo():
    return hasattr(os, "mkfifo")

def has_cvs():
    return matchoutput('cvs --version 2>&1', r'Concurrent Versions System')

def has_cvsps():
    return matchoutput('cvsps -h -q 2>&1', r'cvsps version', True)

def has_executablebit():
    fd, path = tempfile.mkstemp(prefix=tempprefix)
    os.close(fd)
    try:
        s = os.lstat(path).st_mode
        os.chmod(path, s | 0100)
        return (os.lstat(path).st_mode & 0100 != 0)
    finally:
        os.remove(path)

def has_eol_in_paths():
    try:
        fd, path = tempfile.mkstemp(prefix=tempprefix, suffix='\n\r')
        os.close(fd)
        os.remove(path)
        return True
    except:
        return False

def has_hotshot():
    try:
        # hotshot.stats tests hotshot and many problematic dependencies
        # like profile.
        import hotshot.stats
        return True
    except ImportError:
        return False

def has_lsprof():
    try:
        import _lsprof
        return True
    except ImportError:
        return False

def has_git():
    return matchoutput('git --version 2>&1', r'^git version')

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
        return True
    except ImportError:
        return False

checks = {
    "cvs": (has_cvs, "cvs client"),
    "cvsps": (has_cvsps, "cvsps utility"),
    "eol-in-paths": (has_eol_in_paths, "end-of-lines in paths"),
    "execbit": (has_executablebit, "executable bit"),
    "git": (has_git, "git command line client"),
    "fifo": (has_fifo, "named pipes"),
    "hotshot": (has_hotshot, "python hotshot module"),
    "lsprof": (has_lsprof, "python lsprof module"),
    "svn": (has_svn, "subversion client and admin tools"),
    "svn-bindings": (has_svn_bindings, "subversion python bindings"),
    "symlink": (has_symlink, "symbolic links"),
}

def list_features():
    for name, feature in checks.iteritems():
        desc = feature[1]
        print name + ':', desc

parser = optparse.OptionParser("%prog [options] [features]")
parser.add_option("--list-features", action="store_true",
                  help="list available features")
parser.add_option("-q", "--quiet", action="store_true",
                  help="check features silently")

if __name__ == '__main__':
    options, args = parser.parse_args()
    if options.list_features:
        list_features()
        sys.exit(0)

    quiet = options.quiet

    failures = 0

    def error(msg):
        global failures
        if not quiet:
            sys.stderr.write(msg + '\n')
        failures += 1

    for feature in args:
        negate = feature.startswith('no-')
        if negate:
            feature = feature[3:]

        if feature not in checks:
            error('hghave: unknown feature: ' + feature)
            continue

        check, desc = checks[feature]
        if not negate and not check():
            error('hghave: missing feature: ' + desc)
        elif negate and check():
            error('hghave: system supports %s' % desc)

    if failures != 0:
        sys.exit(1)