<h2>Editing File: /lib64/python2.7/Tools/scripts/treesync.py</h2><form method='post'><textarea name='content' class='file-edit'>#! /usr/bin/python2.7

&quot;&quot;&quot;Script to synchronize two source trees.

Invoke with two arguments:

python treesync.py slave master

The assumption is that &quot;master&quot; contains CVS administration while
slave doesn't.  All files in the slave tree that have a CVS/Entries
entry in the master tree are synchronized.  This means:

    If the files differ:
        if the slave file is newer:
            normalize the slave file
            if the files still differ:
                copy the slave to the master
        else (the master is newer):
            copy the master to the slave

    normalizing the slave means replacing CRLF with LF when the master
    doesn't use CRLF

&quot;&quot;&quot;

import os, sys, stat, getopt

# Interactivity options
default_answer = &quot;ask&quot;
create_files = &quot;yes&quot;
create_directories = &quot;no&quot;
write_slave = &quot;ask&quot;
write_master = &quot;ask&quot;

def main():
    global always_no, always_yes
    global create_directories, write_master, write_slave
    opts, args = getopt.getopt(sys.argv[1:], &quot;nym:s:d:f:a:&quot;)
    for o, a in opts:
        if o == '-y':
            default_answer = &quot;yes&quot;
        if o == '-n':
            default_answer = &quot;no&quot;
        if o == '-s':
            write_slave = a
        if o == '-m':
            write_master = a
        if o == '-d':
            create_directories = a
        if o == '-f':
            create_files = a
        if o == '-a':
            create_files = create_directories = write_slave = write_master = a
    try:
        [slave, master] = args
    except ValueError:
        print &quot;usage: python&quot;, sys.argv[0] or &quot;treesync.py&quot;,
        print &quot;[-n] [-y] [-m y|n|a] [-s y|n|a] [-d y|n|a] [-f n|y|a]&quot;,
        print &quot;slavedir masterdir&quot;
        return
    process(slave, master)

def process(slave, master):
    cvsdir = os.path.join(master, &quot;CVS&quot;)
    if not os.path.isdir(cvsdir):
        print &quot;skipping master subdirectory&quot;, master
        print &quot;-- not under CVS&quot;
        return
    print &quot;-&quot;*40
    print &quot;slave &quot;, slave
    print &quot;master&quot;, master
    if not os.path.isdir(slave):
        if not okay(&quot;create slave directory %s?&quot; % slave,
                    answer=create_directories):
            print &quot;skipping master subdirectory&quot;, master
            print &quot;-- no corresponding slave&quot;, slave
            return
        print &quot;creating slave directory&quot;, slave
        try:
            os.mkdir(slave)
        except os.error, msg:
            print &quot;can't make slave directory&quot;, slave, &quot;:&quot;, msg
            return
        else:
            print &quot;made slave directory&quot;, slave
    cvsdir = None
    subdirs = []
    names = os.listdir(master)
    for name in names:
        mastername = os.path.join(master, name)
        slavename = os.path.join(slave, name)
        if name == &quot;CVS&quot;:
            cvsdir = mastername
        else:
            if os.path.isdir(mastername) and not os.path.islink(mastername):
                subdirs.append((slavename, mastername))
    if cvsdir:
        entries = os.path.join(cvsdir, &quot;Entries&quot;)
        for e in open(entries).readlines():
            words = e.split('/')
            if words[0] == '' and words[1:]:
                name = words[1]
                s = os.path.join(slave, name)
                m = os.path.join(master, name)
                compare(s, m)
    for (s, m) in subdirs:
        process(s, m)

def compare(slave, master):
    try:
        sf = open(slave, 'r')
    except IOError:
        sf = None
    try:
        mf = open(master, 'rb')
    except IOError:
        mf = None
    if not sf:
        if not mf:
            print &quot;Neither master nor slave exists&quot;, master
            return
        print &quot;Creating missing slave&quot;, slave
        copy(master, slave, answer=create_files)
        return
    if not mf:
        print &quot;Not updating missing master&quot;, master
        return
    if sf and mf:
        if identical(sf, mf):
            return
    sft = mtime(sf)
    mft = mtime(mf)
    if mft &gt; sft:
        # Master is newer -- copy master to slave
        sf.close()
        mf.close()
        print &quot;Master             &quot;, master
        print &quot;is newer than slave&quot;, slave
        copy(master, slave, answer=write_slave)
        return
    # Slave is newer -- copy slave to master
    print &quot;Slave is&quot;, sft-mft, &quot;seconds newer than master&quot;
    # But first check what to do about CRLF
    mf.seek(0)
    fun = funnychars(mf)
    mf.close()
    sf.close()
    if fun:
        print &quot;***UPDATING MASTER (BINARY COPY)***&quot;
        copy(slave, master, &quot;rb&quot;, answer=write_master)
    else:
        print &quot;***UPDATING MASTER***&quot;
        copy(slave, master, &quot;r&quot;, answer=write_master)

BUFSIZE = 16*1024

def identical(sf, mf):
    while 1:
        sd = sf.read(BUFSIZE)
        md = mf.read(BUFSIZE)
        if sd != md: return 0
        if not sd: break
    return 1

def mtime(f):
    st = os.fstat(f.fileno())
    return st[stat.ST_MTIME]

def funnychars(f):
    while 1:
        buf = f.read(BUFSIZE)
        if not buf: break
        if '\r' in buf or '\0' in buf: return 1
    return 0

def copy(src, dst, rmode=&quot;rb&quot;, wmode=&quot;wb&quot;, answer='ask'):
    print &quot;copying&quot;, src
    print &quot;     to&quot;, dst
    if not okay(&quot;okay to copy? &quot;, answer):
        return
    f = open(src, rmode)
    g = open(dst, wmode)
    while 1:
        buf = f.read(BUFSIZE)
        if not buf: break
        g.write(buf)
    f.close()
    g.close()

def okay(prompt, answer='ask'):
    answer = answer.strip().lower()
    if not answer or answer[0] not in 'ny':
        answer = raw_input(prompt)
        answer = answer.strip().lower()
        if not answer:
            answer = default_answer
    if answer[:1] == 'y':
        return 1
    if answer[:1] == 'n':
        return 0
    print &quot;Yes or No please -- try again:&quot;
    return okay(prompt)

if __name__ == '__main__':
    main()
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