hgext/pager.py
author Shun-ichi Goto <shunichi.goto@gmail.com>
Wed, 13 Aug 2008 20:18:40 -0500
changeset 6887 304484c7e0ba
parent 6548 962eb403165b
child 7216 292fb2ad2846
permissions -rw-r--r--
Update win32mbcs extension * Code cleanup by Matt. * Fix the issue with case-insensitive fs support by wrapping also util.fspath() and util.checkcase() * Abort program when path conversion is failed.

# pager.py - display output using a pager
#
# Copyright 2008 David Soria Parra <dsp@php.net>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
#
# To load the extension, add it to your .hgrc file:
#
#   [extension]
#   hgext.pager =
#
# Run "hg help pager" to get info on configuration.

'''browse command output with external pager

To set the pager that should be used, set the application variable:

  [pager]
  pager = LESS='FSRX' less

If no pager is set, the pager extensions uses the environment
variable $PAGER. If neither pager.pager, nor $PAGER is set, no pager
is used.

If you notice "BROKEN PIPE" error messages, you can disable them
by setting:

  [pager]
  quiet = True

You can disable the pager for certain commands by adding them to the
pager.ignore list:

  [pager]
  ignore = version, help, update

You can also enable the pager only for certain commands using pager.attend:

  [pager]
  attend = log

If pager.attend is present, pager.ignore will be ignored.

To ignore global commands like "hg version" or "hg help", you have to specify
them in the global .hgrc
'''

import sys, os, signal
from mercurial import dispatch, util

def uisetup(ui):
    def pagecmd(ui, options, cmd, cmdfunc):
        p = ui.config("pager", "pager", os.environ.get("PAGER"))
        if p and sys.stdout.isatty() and '--debugger' not in sys.argv:
            attend = ui.configlist('pager', 'attend')
            if (cmd in attend or
                (cmd not in ui.configlist('pager', 'ignore') and not attend)):
                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)

    oldrun = dispatch._runcommand
    dispatch._runcommand = pagecmd