335 lines
10 KiB
Python
Executable File
335 lines
10 KiB
Python
Executable File
"""RCS interface module.
|
|
|
|
Defines the class RCS, which represents a directory with rcs version
|
|
files and (possibly) corresponding work files.
|
|
|
|
"""
|
|
|
|
|
|
import fnmatch
|
|
import os
|
|
import regsub
|
|
import string
|
|
import tempfile
|
|
|
|
|
|
class RCS:
|
|
|
|
"""RCS interface class (local filesystem version).
|
|
|
|
An instance of this class represents a directory with rcs version
|
|
files and (possible) corresponding work files.
|
|
|
|
Methods provide access to most rcs operations such as
|
|
checkin/checkout, access to the rcs metadata (revisions, logs,
|
|
branches etc.) as well as some filesystem operations such as
|
|
listing all rcs version files.
|
|
|
|
XXX BUGS / PROBLEMS
|
|
|
|
- The instance always represents the current directory so it's not
|
|
very useful to have more than one instance around simultaneously
|
|
|
|
"""
|
|
|
|
# Characters allowed in work file names
|
|
okchars = string.ascii_letters + string.digits + '-_=+'
|
|
|
|
def __init__(self):
|
|
"""Constructor."""
|
|
pass
|
|
|
|
def __del__(self):
|
|
"""Destructor."""
|
|
pass
|
|
|
|
# --- Informational methods about a single file/revision ---
|
|
|
|
def log(self, name_rev, otherflags = ''):
|
|
"""Return the full log text for NAME_REV as a string.
|
|
|
|
Optional OTHERFLAGS are passed to rlog.
|
|
|
|
"""
|
|
f = self._open(name_rev, 'rlog ' + otherflags)
|
|
data = f.read()
|
|
status = self._closepipe(f)
|
|
if status:
|
|
data = data + "%s: %s" % status
|
|
elif data[-1] == '\n':
|
|
data = data[:-1]
|
|
return data
|
|
|
|
def head(self, name_rev):
|
|
"""Return the head revision for NAME_REV"""
|
|
dict = self.info(name_rev)
|
|
return dict['head']
|
|
|
|
def info(self, name_rev):
|
|
"""Return a dictionary of info (from rlog -h) for NAME_REV
|
|
|
|
The dictionary's keys are the keywords that rlog prints
|
|
(e.g. 'head' and its values are the corresponding data
|
|
(e.g. '1.3').
|
|
|
|
XXX symbolic names and locks are not returned
|
|
|
|
"""
|
|
f = self._open(name_rev, 'rlog -h')
|
|
dict = {}
|
|
while 1:
|
|
line = f.readline()
|
|
if not line: break
|
|
if line[0] == '\t':
|
|
# XXX could be a lock or symbolic name
|
|
# Anything else?
|
|
continue
|
|
i = string.find(line, ':')
|
|
if i > 0:
|
|
key, value = line[:i], string.strip(line[i+1:])
|
|
dict[key] = value
|
|
status = self._closepipe(f)
|
|
if status:
|
|
raise IOError, status
|
|
return dict
|
|
|
|
# --- Methods that change files ---
|
|
|
|
def lock(self, name_rev):
|
|
"""Set an rcs lock on NAME_REV."""
|
|
name, rev = self.checkfile(name_rev)
|
|
cmd = "rcs -l%s %s" % (rev, name)
|
|
return self._system(cmd)
|
|
|
|
def unlock(self, name_rev):
|
|
"""Clear an rcs lock on NAME_REV."""
|
|
name, rev = self.checkfile(name_rev)
|
|
cmd = "rcs -u%s %s" % (rev, name)
|
|
return self._system(cmd)
|
|
|
|
def checkout(self, name_rev, withlock=0, otherflags=""):
|
|
"""Check out NAME_REV to its work file.
|
|
|
|
If optional WITHLOCK is set, check out locked, else unlocked.
|
|
|
|
The optional OTHERFLAGS is passed to co without
|
|
interpretation.
|
|
|
|
Any output from co goes to directly to stdout.
|
|
|
|
"""
|
|
name, rev = self.checkfile(name_rev)
|
|
if withlock: lockflag = "-l"
|
|
else: lockflag = "-u"
|
|
cmd = 'co %s%s %s %s' % (lockflag, rev, otherflags, name)
|
|
return self._system(cmd)
|
|
|
|
def checkin(self, name_rev, message=None, otherflags=""):
|
|
"""Check in NAME_REV from its work file.
|
|
|
|
The optional MESSAGE argument becomes the checkin message
|
|
(default "<none>" if None); or the file description if this is
|
|
a new file.
|
|
|
|
The optional OTHERFLAGS argument is passed to ci without
|
|
interpretation.
|
|
|
|
Any output from ci goes to directly to stdout.
|
|
|
|
"""
|
|
name, rev = self._unmangle(name_rev)
|
|
new = not self.isvalid(name)
|
|
if not message: message = "<none>"
|
|
if message and message[-1] != '\n':
|
|
message = message + '\n'
|
|
lockflag = "-u"
|
|
if new:
|
|
f = tempfile.NamedTemporaryFile()
|
|
f.write(message)
|
|
f.flush()
|
|
cmd = 'ci %s%s -t%s %s %s' % \
|
|
(lockflag, rev, f.name, otherflags, name)
|
|
else:
|
|
message = regsub.gsub('\([\\"$`]\)', '\\\\\\1', message)
|
|
cmd = 'ci %s%s -m"%s" %s %s' % \
|
|
(lockflag, rev, message, otherflags, name)
|
|
return self._system(cmd)
|
|
|
|
# --- Exported support methods ---
|
|
|
|
def listfiles(self, pat = None):
|
|
"""Return a list of all version files matching optional PATTERN."""
|
|
files = os.listdir(os.curdir)
|
|
files = filter(self._isrcs, files)
|
|
if os.path.isdir('RCS'):
|
|
files2 = os.listdir('RCS')
|
|
files2 = filter(self._isrcs, files2)
|
|
files = files + files2
|
|
files = map(self.realname, files)
|
|
return self._filter(files, pat)
|
|
|
|
def isvalid(self, name):
|
|
"""Test whether NAME has a version file associated."""
|
|
namev = self.rcsname(name)
|
|
return (os.path.isfile(namev) or
|
|
os.path.isfile(os.path.join('RCS', namev)))
|
|
|
|
def rcsname(self, name):
|
|
"""Return the pathname of the version file for NAME.
|
|
|
|
The argument can be a work file name or a version file name.
|
|
If the version file does not exist, the name of the version
|
|
file that would be created by "ci" is returned.
|
|
|
|
"""
|
|
if self._isrcs(name): namev = name
|
|
else: namev = name + ',v'
|
|
if os.path.isfile(namev): return namev
|
|
namev = os.path.join('RCS', os.path.basename(namev))
|
|
if os.path.isfile(namev): return namev
|
|
if os.path.isdir('RCS'):
|
|
return os.path.join('RCS', namev)
|
|
else:
|
|
return namev
|
|
|
|
def realname(self, namev):
|
|
"""Return the pathname of the work file for NAME.
|
|
|
|
The argument can be a work file name or a version file name.
|
|
If the work file does not exist, the name of the work file
|
|
that would be created by "co" is returned.
|
|
|
|
"""
|
|
if self._isrcs(namev): name = namev[:-2]
|
|
else: name = namev
|
|
if os.path.isfile(name): return name
|
|
name = os.path.basename(name)
|
|
return name
|
|
|
|
def islocked(self, name_rev):
|
|
"""Test whether FILE (which must have a version file) is locked.
|
|
|
|
XXX This does not tell you which revision number is locked and
|
|
ignores any revision you may pass in (by virtue of using rlog
|
|
-L -R).
|
|
|
|
"""
|
|
f = self._open(name_rev, 'rlog -L -R')
|
|
line = f.readline()
|
|
status = self._closepipe(f)
|
|
if status:
|
|
raise IOError, status
|
|
if not line: return None
|
|
if line[-1] == '\n':
|
|
line = line[:-1]
|
|
return self.realname(name_rev) == self.realname(line)
|
|
|
|
def checkfile(self, name_rev):
|
|
"""Normalize NAME_REV into a (NAME, REV) tuple.
|
|
|
|
Raise an exception if there is no corresponding version file.
|
|
|
|
"""
|
|
name, rev = self._unmangle(name_rev)
|
|
if not self.isvalid(name):
|
|
raise os.error, 'not an rcs file %r' % (name,)
|
|
return name, rev
|
|
|
|
# --- Internal methods ---
|
|
|
|
def _open(self, name_rev, cmd = 'co -p', rflag = '-r'):
|
|
"""INTERNAL: open a read pipe to NAME_REV using optional COMMAND.
|
|
|
|
Optional FLAG is used to indicate the revision (default -r).
|
|
|
|
Default COMMAND is "co -p".
|
|
|
|
Return a file object connected by a pipe to the command's
|
|
output.
|
|
|
|
"""
|
|
name, rev = self.checkfile(name_rev)
|
|
namev = self.rcsname(name)
|
|
if rev:
|
|
cmd = cmd + ' ' + rflag + rev
|
|
return os.popen("%s %r" % (cmd, namev))
|
|
|
|
def _unmangle(self, name_rev):
|
|
"""INTERNAL: Normalize NAME_REV argument to (NAME, REV) tuple.
|
|
|
|
Raise an exception if NAME contains invalid characters.
|
|
|
|
A NAME_REV argument is either NAME string (implying REV='') or
|
|
a tuple of the form (NAME, REV).
|
|
|
|
"""
|
|
if type(name_rev) == type(''):
|
|
name_rev = name, rev = name_rev, ''
|
|
else:
|
|
name, rev = name_rev
|
|
for c in rev:
|
|
if c not in self.okchars:
|
|
raise ValueError, "bad char in rev"
|
|
return name_rev
|
|
|
|
def _closepipe(self, f):
|
|
"""INTERNAL: Close PIPE and print its exit status if nonzero."""
|
|
sts = f.close()
|
|
if not sts: return None
|
|
detail, reason = divmod(sts, 256)
|
|
if reason == 0: return 'exit', detail # Exit status
|
|
signal = reason&0x7F
|
|
if signal == 0x7F:
|
|
code = 'stopped'
|
|
signal = detail
|
|
else:
|
|
code = 'killed'
|
|
if reason&0x80:
|
|
code = code + '(coredump)'
|
|
return code, signal
|
|
|
|
def _system(self, cmd):
|
|
"""INTERNAL: run COMMAND in a subshell.
|
|
|
|
Standard input for the command is taken from /dev/null.
|
|
|
|
Raise IOError when the exit status is not zero.
|
|
|
|
Return whatever the calling method should return; normally
|
|
None.
|
|
|
|
A derived class may override this method and redefine it to
|
|
capture stdout/stderr of the command and return it.
|
|
|
|
"""
|
|
cmd = cmd + " </dev/null"
|
|
sts = os.system(cmd)
|
|
if sts: raise IOError, "command exit status %d" % sts
|
|
|
|
def _filter(self, files, pat = None):
|
|
"""INTERNAL: Return a sorted copy of the given list of FILES.
|
|
|
|
If a second PATTERN argument is given, only files matching it
|
|
are kept. No check for valid filenames is made.
|
|
|
|
"""
|
|
if pat:
|
|
def keep(name, pat = pat):
|
|
return fnmatch.fnmatch(name, pat)
|
|
files = filter(keep, files)
|
|
else:
|
|
files = files[:]
|
|
files.sort()
|
|
return files
|
|
|
|
def _remove(self, fn):
|
|
"""INTERNAL: remove FILE without complaints."""
|
|
try:
|
|
os.unlink(fn)
|
|
except os.error:
|
|
pass
|
|
|
|
def _isrcs(self, name):
|
|
"""INTERNAL: Test whether NAME ends in ',v'."""
|
|
return name[-2:] == ',v'
|