replace usage of os.popen() with util.popen()

replace usage of os.popen() with util.popen()

To make this possible, I added a mode parameter to both implementations of
util.popen(), defaulting to 'r' (as it does in the Python stdlib).

--- a/hgext/bugzilla.py	Sun Apr 13 11:31:45 2008 -0500
+++ b/hgext/bugzilla.py	Mon Apr 14 14:34:38 2008 +0200
@@ -55,7 +55,7 @@
 from mercurial.i18n import _
 from mercurial.node import short
 from mercurial import cmdutil, templater, util
-import os, re, time
+import re, time
 
 MySQLdb = None
 
@@ -127,7 +127,7 @@
             cmd = self.ui.config('bugzilla', 'notify',
                                'cd /var/www/html/bugzilla && '
                                './processmail %s [e-mail]') % id
-            fp = os.popen('(%s) 2>&1' % cmd)
+            fp = util.popen('(%s) 2>&1' % cmd)
             out = fp.read()
             ret = fp.close()
             if ret:

--- a/hgext/pager.py	Sun Apr 13 11:31:45 2008 -0500
+++ b/hgext/pager.py	Mon Apr 14 14:34:38 2008 +0200
@@ -47,7 +47,7 @@
 '''
 
 import sys, os, signal
-from mercurial import dispatch
+from mercurial import dispatch, util
 
 def uisetup(ui):
     def pagecmd(ui, options, cmd, cmdfunc):
@@ -56,7 +56,7 @@
             attend = ui.configlist('pager', 'attend')
             if (cmd in attend or
                 (cmd not in ui.configlist('pager', 'ignore') and not attend)):
-                sys.stderr = sys.stdout = os.popen(p, "wb")
+                sys.stderr = sys.stdout = util.popen(p, "wb")
                 if ui.configbool('pager', 'quiet'):
                     signal.signal(signal.SIGPIPE, signal.SIG_DFL)
         return oldrun(ui, options, cmd, cmdfunc)

--- a/hgext/patchbomb.py	Sun Apr 13 11:31:45 2008 -0500
+++ b/hgext/patchbomb.py	Mon Apr 14 14:34:38 2008 +0200
@@ -404,7 +404,7 @@
             ui.status('Displaying ', m['Subject'], ' ...\n')
             ui.flush()
             if 'PAGER' in os.environ:
-                fp = os.popen(os.environ['PAGER'], 'w')
+                fp = util.popen(os.environ['PAGER'], 'w')
             else:
                 fp = ui
             generator = email.Generator.Generator(fp, mangle_from_=False)

--- a/mercurial/mail.py	Sun Apr 13 11:31:45 2008 -0500
+++ b/mercurial/mail.py	Mon Apr 14 14:34:38 2008 +0200
@@ -6,7 +6,8 @@
 # of the GNU General Public License, incorporated herein by reference.
 
 from i18n import _
-import os, smtplib, util, socket
+import os, smtplib, socket
+import util
 
 def _smtp(ui):
     '''build an smtp connection and return a function to send mail'''
@@ -53,7 +54,7 @@
     cmdline = '%s -f %s %s' % (program, util.email(sender),
                                ' '.join(map(util.email, recipients)))
     ui.note(_('sending mail: %s\n') % cmdline)
-    fp = os.popen(cmdline, 'w')
+    fp = util.popen(cmdline, 'w')
     fp.write(msg)
     ret = fp.close()
     if ret:

--- a/mercurial/util.py	Sun Apr 13 11:31:45 2008 -0500
+++ b/mercurial/util.py	Mon Apr 14 14:34:38 2008 +0200
@@ -1086,12 +1086,12 @@
         # through the current COMSPEC. cmd.exe suppress enclosing quotes.
         return '"' + cmd + '"'
 
-    def popen(command):
+    def popen(command, mode='r'):
         # Work around "popen spawned process may not write to stdout
         # under windows"
         # http://bugs.python.org/issue1366
         command += " 2> %s" % nulldev
-        return os.popen(quotecommand(command))
+        return os.popen(quotecommand(command), mode)
 
     def explain_exit(code):
         return _("exited with status %d") % code, code
@@ -1252,8 +1252,8 @@
     def quotecommand(cmd):
         return cmd
 
-    def popen(command):
-        return os.popen(command)
+    def popen(command, mode='r'):
+        return os.popen(command, mode)
 
     def testpid(pid):
         '''return False if pid dead, True if running or not sure'''

--- a/mercurial/version.py	Sun Apr 13 11:31:45 2008 -0500
+++ b/mercurial/version.py	Mon Apr 14 14:34:38 2008 +0200
@@ -12,6 +12,7 @@
 import os
 import re
 import time
+import util
 
 unknown_version = 'unknown'
 remembered_version = False
@@ -48,7 +49,7 @@
     """Store version information."""
     global remembered_version
     if not version and os.path.isdir(".hg"):
-        f = os.popen("hg identify")  # use real hg installation
+        f = util.popen("hg identify")  # use real hg installation
         ident = f.read()[:-1]
         if not f.close() and ident:
             ids = ident.split(' ', 1)