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In my project, I am using Mercurial and a folder in when the user can upload file. But since the user will upload files, the folder is empty.

I don't know how I can add this folder to my project without putting any file inside.

Do you know how I can do ?

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2 Answers 2

up vote 33 down vote accepted

Mercurial is only keeping track of files, not directories.

One of the solution is to add a .emtpy file in your repository :

$ touch uploads/.empty
$ hg add uploads/.empty
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1  
Yes, that is indeed the correct solution: Mercurial is only keeping track of files, not directories. Another solution is to create the empty directories when you deploy your software. –  Martin Geisler Dec 21 '09 at 23:23
2  
I'm thinking naming it .hgempty might give a better clue as to what it's for –  User Oct 9 '12 at 20:40
4  
Yes or .hgkeep –  Natim Oct 10 '12 at 7:28
1  
Might as well go for verbose: .hgkeepifempty :) –  Daniel Sokolowski Feb 25 '13 at 19:40

I have created a python script that automates the process of creating/deleting those files.

Here's the script's source: http://pastebin.com/inbYmMut

#!/usr/bin/python

# Copyright (c) 2011 Ernesto Mendez (der-design.com)
# Dual licensed under the MIT and GPL licenses:
# http://www.opensource.org/licenses/mit-license.php
# http://www.gnu.org/licenses/gpl.html

# Version 1.0.0
# - Initial Release

from __future__ import generators
import sys
from optparse import OptionParser
import os

def main():
    # Process arguments

    if len(args) > 1:
        parser.error('Too many arguments')
        sys.exit()

    elif len(args) == 0:
        parser.error('Missing filename')
        sys.exit()

    if not os.path.exists(options.directory):
        parser.error("%s: No such directory" % options.directory)
        sys.exit()

    filename = args[0]

    # Create generator

    filetree = dirwalk(os.path.abspath(options.directory))

    # Walk directory tree, create files

    if options.remove == True:

        removed = ['Removing the following files: \n']
        cmd = "rm"

        for file in filetree:
            if (os.path.basename(file) == filename):
                removed.append(file)
                cmd += " %s" % fixpath(file)

        if cmd != "rm":
            for f in removed: print f
            os.system(cmd)
        else:
            print "No files named '%s' found" % filename
            sys.exit()

    # Walk directory tree, delete files

    else:

        created = ["Creating the following files:\n"]
        cmd = "touch"

        for file in filetree:
            if (os.path.isdir(file)):
                created.append("%s%s" % (file, filename))
                cmd += " " + fixpath("%s%s" % (file, filename))

        if cmd != "touch":
            for f in created: print f
            os.system(cmd)
        else:
            print "No empty directories found"
            sys.exit()


def dirwalk(dir, giveDirs=1):
    # http://code.activestate.com/recipes/105873-walk-a-directory-tree-using-a-generator/
    for f in os.listdir(dir):
        fullpath = os.path.join(dir, f)
        if os.path.isdir(fullpath) and not os.path.islink(fullpath):
            if not len(os.listdir(fullpath)):
                yield fullpath + os.sep
            else:
                for x in dirwalk(fullpath):  # recurse into subdir
                    if os.path.isdir(x):
                        if giveDirs:
                            yield x
                    else:
                        yield x
        else:
            yield fullpath


def wrap(text, width):
    return reduce(lambda line, word, width=width: '%s%s%s' % (line, ' \n'[(len(line)-line.rfind('\n')-1 + len(word.split('\n', 1)[0] ) >= width)], word), text.split(' ') )


def fixpath(p):
    return shellquote(os.path.normpath(p))


def shellquote(s):
    return "'" + s.replace("'", "'\\''") + "'"


def init_options():
    global parser, options, args
    parser = OptionParser(usage="usage: %prog [options] filename", description="Add or Remove placeholder files for SCM (Source Control Management) tools that do not support empty directories.")
    parser.add_option("-p", "--path", dest="directory", help="search within PATH", metavar="PATH")
    parser.add_option("-r", "--remove", dest="remove", action="store_true", help="remove FILE from PATH, if it's the only file on PATH")

    (options, args) = parser.parse_args()

if __name__ == '__main__':
    print
    init_options()
    main()
    print
share|improve this answer
    
The link is dead. –  Natim Oct 10 '12 at 7:30
    
True, updated link... –  der Oct 11 '12 at 22:20
2  
host it on bitbucket (or ) github , old pastebin is old –  V3ss0n Dec 10 '12 at 15:28

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