Opens files wherever they are in your machine. Change to any directory from anywhere.

open.cmd

@echo off
REM = """
REM python -x skipped that first line...
REM make sure that this file is saved with Windows newlines
REM make sure to change the next lines to whatever this file is called:

set FOLDER=D:/Apps/Misc
python -x %FOLDER%/o.cmd %*
if errorlevel == 1 goto changedir
goto end
"""

import os, os.path, re, sys

folders = (
    ('',             'D:\\blog',                                    0),
    ('',             'D:\\Anand',                                   9),
    ('',             'D:\\Entertainment\\Books',                    9),
    ('',             'D:\\Entertainment\\Non-Fiction',              9),
    ('',             'D:\\My Music',                                9),
    ('',             'D:\\Infy',                                    9),
    ('',             'D:\\site',                                    3),
    ('',             'D:\\My Dropbox',                              9),
    ('',             'D:\\code',                                    2),
    ('',             'D:\\ext',                                     2),
    (r'(exe|bat)$',  'D:\\xampp',                                   0),
    (r'(exe|bat)$',  'D:\\Apps',                                    2),
    (r'exe$',        'C:\\Program Files',                           2),
)

current_dir =  ('', '.', 0)

fallback = (
    current_dir,
    ('',    'D:\\Downloads', 0),
    ('',    'D:\\temp', 0),
    ('',    'D:\\Entertainment\\Non-Fiction', 9),
)

exclude_dirs    = re.compile(r'^\.|^Archive', re.IGNORECASE)
exclude_files   = re.compile(r'^\.|unins', re.IGNORECASE)

path, file  = os.path.split(__file__)

config_file = os.path.join(path, 'o.index')
if not os.path.exists(config_file): open(config_file, 'w').close()
file_index  = open(config_file).readlines()

used_file   = os.path.join(path, 'o.shortcuts')
if not os.path.exists(used_file): open(used_file, 'w').close()
used_index  = dict(line.split('\t')[:2] for line in open(used_file))

dir_index   = sorted(dict(((os.path.split(file)[0], 1) for file in file_index)).keys())


def get_files(folders):
    for condition, folder, depth in folders:
        print folder
        match = condition and re.compile(condition) or None
        for root, dirs, files in os.walk(folder):
            level = root.count(os.path.sep) - folder.count(os.path.sep)
            for i in xrange(len(dirs), 0, -1):
                if level >= depth or exclude_dirs.search(dirs[i-1]): del dirs[i-1]
            for file in files:
                if exclude_files.search(file): continue
                if match:
                    if match.search(file): yield os.path.join(root, file) + '\n'
                else:
                    yield os.path.join(root, file) + '\n'

def run_file(file):
    file = file.strip()
    print "Opening", file
    path, name = os.path.split(file)
    os.chdir(path)
    os.startfile(file)

def change_dir(folder):
    '''Todo: Figure out how to change directory of the command prompt'''
    open(os.path.join(path, '__cd.bat'), 'w').write('cd "%s"' % folder)
    print
    sys.exit(1)

def exactmatch(file, words):
    return file.lower().endswith('\\' + ' '.join(words).lower())

def filter_index(index, words, nofallback = False, command=run_file):
    '''Filter the index using the words, and run the only program left'''

    # Check if already used
    phrase = ' '.join(words).lower()
    result = used_index.get(phrase, None)
    if result:
        command(result)
        return

    # Filter out all files not matching the words
    for word in words:
        p = re.compile(word, re.IGNORECASE)
        for i in xrange(len(index), 0, -1):
            if not p.search(index[i-1]): del index[i-1]

    index = sorted(index, key=lambda file:not(exactmatch(file, words)))
    exactmatches = [file for file in index if exactmatch(file, words)]

    if len(exactmatches) >= 1: index = exactmatches             # If there are exact matches, just stick to them

    if len(index) > 1:                                          # If there's more than one choice,
        for i, file in enumerate(index[:10]):                   #   Show the first 10
            print "  ", i, file.strip()
        choice = raw_input('> (0-9, q, any word): ').strip()    #   Get the user's choice
        if re.match(r'^\d$', choice):                           # If a number,
            result = index[int(choice)]
            command(result)                                     #   run that programe
            open(used_file, 'a').write(phrase+'\t'+result)      #   and save it as a used result
        elif choice == 'q':
            return                                              #   If 'q', quit
        else:
            filter_index(index, words + choice.split())         #   If words, filter further
    elif len(index) == 1:                                       # If there's only one choice,
        command(index[0])                                       #   Run it
    else:
        if not nofallback: filter_index(list(get_files(fallback)), words,
            nofallback = True)

if len(sys.argv) > 1 and sys.argv[1] == '-index': open(config_file, 'w').writelines(get_files(folders))
elif len(sys.argv) > 1 and sys.argv[1] == 'cd': filter_index(dir_index, sys.argv[2:], command=change_dir)
elif len(sys.argv) > 1 and sys.argv[1] == '.': filter_index(list(get_files([current_dir])), sys.argv[2:], nofallback=True)
else: filter_index(file_index, sys.argv[1:])

"""
:changedir
call %FOLDER%/__cd.bat
:end """