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Edit File : treesync.py \| Size : 5.65 KB
#! /usr/bin/python2.7 """Script to synchronize two source trees. Invoke with two arguments: python treesync.py slave master The assumption is that "master" 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 """ import os, sys, stat, getopt # Interactivity options default_answer = "ask" create_files = "yes" create_directories = "no" write_slave = "ask" write_master = "ask" def main(): global always_no, always_yes global create_directories, write_master, write_slave opts, args = getopt.getopt(sys.argv[1:], "nym:s:d:f:a:") for o, a in opts: if o == '-y': default_answer = "yes" if o == '-n': default_answer = "no" 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 "usage: python", sys.argv[0] or "treesync.py", print "[-n] [-y] [-m y\|n\|a] [-s y\|n\|a] [-d y\|n\|a] [-f n\|y\|a]", print "slavedir masterdir" return process(slave, master) def process(slave, master): cvsdir = os.path.join(master, "CVS") if not os.path.isdir(cvsdir): print "skipping master subdirectory", master print "-- not under CVS" return print "-"40 print "slave ", slave print "master", master if not os.path.isdir(slave): if not okay("create slave directory %s?" % slave, answer=create_directories): print "skipping master subdirectory", master print "-- no corresponding slave", slave return print "creating slave directory", slave try: os.mkdir(slave) except os.error, msg: print "can't make slave directory", slave, ":", msg return else: print "made slave directory", 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 == "CVS": 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, "Entries") 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 "Neither master nor slave exists", master return print "Creating missing slave", slave copy(master, slave, answer=create_files) return if not mf: print "Not updating missing master", master return if sf and mf: if identical(sf, mf): return sft = mtime(sf) mft = mtime(mf) if mft > sft: # Master is newer -- copy master to slave sf.close() mf.close() print "Master ", master print "is newer than slave", slave copy(master, slave, answer=write_slave) return # Slave is newer -- copy slave to master print "Slave is", sft-mft, "seconds newer than master" # But first check what to do about CRLF mf.seek(0) fun = funnychars(mf) mf.close() sf.close() if fun: print "UPDATING MASTER (BINARY COPY)" copy(slave, master, "rb", answer=write_master) else: print "UPDATING MASTER" copy(slave, master, "r", answer=write_master) BUFSIZE = 161024 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="rb", wmode="wb", answer='ask'): print "copying", src print " to", dst if not okay("okay to copy? ", 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 "Yes or No please -- try again:" return okay(prompt) if __name__ == '__main__': main() Back

Edit File : treesync.py | Size : 5.65 KB

#! /usr/bin/python2.7

"""Script to synchronize two source trees.

Invoke with two arguments:

python treesync.py slave master

The assumption is that "master" 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

"""

import os, sys, stat, getopt

# Interactivity options
default_answer = "ask"
create_files = "yes"
create_directories = "no"
write_slave = "ask"
write_master = "ask"

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

def process(slave, master):
    cvsdir = os.path.join(master, "CVS")
    if not os.path.isdir(cvsdir):
        print "skipping master subdirectory", master
        print "-- not under CVS"
        return
    print "-"*40
    print "slave ", slave
    print "master", master
    if not os.path.isdir(slave):
        if not okay("create slave directory %s?" % slave,
                    answer=create_directories):
            print "skipping master subdirectory", master
            print "-- no corresponding slave", slave
            return
        print "creating slave directory", slave
        try:
            os.mkdir(slave)
        except os.error, msg:
            print "can't make slave directory", slave, ":", msg
            return
        else:
            print "made slave directory", 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 == "CVS":
            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, "Entries")
        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 "Neither master nor slave exists", master
            return
        print "Creating missing slave", slave
        copy(master, slave, answer=create_files)
        return
    if not mf:
        print "Not updating missing master", master
        return
    if sf and mf:
        if identical(sf, mf):
            return
    sft = mtime(sf)
    mft = mtime(mf)
    if mft > sft:
        # Master is newer -- copy master to slave
        sf.close()
        mf.close()
        print "Master             ", master
        print "is newer than slave", slave
        copy(master, slave, answer=write_slave)
        return
    # Slave is newer -- copy slave to master
    print "Slave is", sft-mft, "seconds newer than master"
    # But first check what to do about CRLF
    mf.seek(0)
    fun = funnychars(mf)
    mf.close()
    sf.close()
    if fun:
        print "***UPDATING MASTER (BINARY COPY)***"
        copy(slave, master, "rb", answer=write_master)
    else:
        print "***UPDATING MASTER***"
        copy(slave, master, "r", 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="rb", wmode="wb", answer='ask'):
    print "copying", src
    print "     to", dst
    if not okay("okay to copy? ", 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 "Yes or No please -- try again:"
    return okay(prompt)

if __name__ == '__main__':
    main()

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