Protocol switch from using generators to stream-like objects.
This allows the the pull side to precisely control how much data is
read so that another encapsulation layer is not needed.
An http client gets a response with a finite size. Because ssh clients
need to keep the stream open, we must not read more data than is sent
in a response. But due to the streaming nature of the changegroup
scheme, only the piece that's parsing the data knows how far it's
allowed to read.
This means the generator scheme isn't fine-grained enough. Instead we
need file-like objects with a read(x) method. This switches everything
for push/pull over to using file-like objects rather than generators.
# ui.py - user interface bits for mercurial
#
# Copyright 2005 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
import os, ConfigParser
from demandload import *
demandload(globals(), "re socket sys util")
class ui:
def __init__(self, verbose=False, debug=False, quiet=False,
interactive=True):
self.cdata = ConfigParser.SafeConfigParser()
self.cdata.read(os.path.expanduser("~/.hgrc"))
self.quiet = self.configbool("ui", "quiet")
self.verbose = self.configbool("ui", "verbose")
self.debugflag = self.configbool("ui", "debug")
self.interactive = self.configbool("ui", "interactive", True)
self.quiet = (self.quiet or quiet) and not verbose and not debug
self.verbose = (self.verbose or verbose) or debug
self.debugflag = (self.debugflag or debug)
self.interactive = (self.interactive and interactive)
def readconfig(self, fp):
self.cdata.readfp(fp)
def config(self, section, val, default=None):
if self.cdata.has_option(section, val):
return self.cdata.get(section, val)
return default
def configbool(self, section, val, default=False):
if self.cdata.has_option(section, val):
return self.cdata.getboolean(section, val)
return default
def configitems(self, section):
if self.cdata.has_section(section):
return self.cdata.items(section)
return []
def username(self):
return (self.config("ui", "username") or
os.environ.get("HGUSER") or
os.environ.get("EMAIL") or
(os.environ.get("LOGNAME",
os.environ.get("USERNAME", "unknown"))
+ '@' + socket.getfqdn()))
def expandpath(self, loc):
paths = {}
for name, path in self.configitems("paths"):
paths[name] = path
return paths.get(loc, loc)
def write(self, *args):
for a in args:
sys.stdout.write(str(a))
def write_err(self, *args):
sys.stdout.flush()
for a in args:
sys.stderr.write(str(a))
def readline(self):
return sys.stdin.readline()[:-1]
def prompt(self, msg, pat, default = "y"):
if not self.interactive: return default
while 1:
self.write(msg, " ")
r = self.readline()
if re.match(pat, r):
return r
else:
self.write("unrecognized response\n")
def status(self, *msg):
if not self.quiet: self.write(*msg)
def warn(self, *msg):
self.write_err(*msg)
def note(self, *msg):
if self.verbose: self.write(*msg)
def debug(self, *msg):
if self.debugflag: self.write(*msg)
def edit(self, text):
import tempfile
(fd, name) = tempfile.mkstemp("hg")
f = os.fdopen(fd, "w")
f.write(text)
f.close()
editor = (self.config("ui", "editor") or
os.environ.get("HGEDITOR") or
os.environ.get("EDITOR", "vi"))
util.system("%s %s" % (editor, name), errprefix = "edit failed")
t = open(name).read()
t = re.sub("(?m)^HG:.*\n", "", t)
return t