1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
#! /usr/bin/env python3
"""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", end=' ')
print("[-n] [-y] [-m y|n|a] [-s y|n|a] [-d y|n|a] [-f n|y|a]", end=' ')
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 OSError as 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 raw_input(prompt):
sys.stdout.write(prompt)
sys.stdout.flush()
return sys.stdin.readline()
def okay(prompt, answer='ask'):
answer = answer.strip().lower()
if not answer or answer[0] not in 'ny':
answer = 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()
|
