all2one awakening :: 'touch' command-line utility in Python

'touch' command-line utility in Python
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Game Development
2008/08/01 15:52
commandline, Python, TOUCH, 명령행, 파이썬
Posted by all2one
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'touch' command-line utility in Python

import os
import stat
import time
import sys
import getopt
import re
import exceptions

# Finds files matching the expression.
def find_files(name_pattern, path, recursive, exclude_pattern):
    if path[-1] != os.sep:
        path += os.sep

retList = []
    for name in os.listdir(path):
        if stat.S_ISDIR(os.stat(path + name).st_mode):
            if recursive:
                retList += find_files(name_pattern, path + name, recursive, exclude_pattern)
        else:
            m = name_pattern.match(name)
            ex = exclude_pattern.match(name)
            if m <> None and m.group() == name:
                if ex == None or ex.group() <> name:
                    retList.append(path + name)

return retList
   
# ======= Main ========
if len(sys.argv[1:]) == 0:
    print "for help use --help"
    sys.exit()
    
opts, args = getopt.getopt(sys.argv[1:], "hfrx:", ["help", "force", "recursive", "exclude="])

# Parses command line options.
force = False
recursive = False
exclude = ''
for op, p in opts:
    if op == '-h' or op == '--help':
        print '''[-f] [-r] [-x excluding_regex] matching_regex
        matching_regex : A regular expression for files to be touched
        -f(--force) : Touches read-only files, too
        -r(--recursive) : Touches recursively
        -x(--exclude) : Specifes a regular expression for the exclusion'''
        sys.exit()
    elif op == '-f' or op == '--force':
        force = True
    elif op == '-r' or op == '--recursive':
        recursive = True
    elif op == '-x' or op == '--exclude':
        exclude = p
        
# Gets a matching pattern from the first argument.
name_pattern = re.compile(args[0], re.I)
exclude_pattern = re.compile(exclude, re.I)
# Touches.
for name in find_files(name_pattern, ".", recursive, exclude_pattern):
    readonly = False
    if os.access(name, os.W_OK) == False:
        if force:
            os.chmod(name, stat.S_IWRITE)
            readonly = True
        else:
            continue
    # Changes access/modify time to the current time.
    os.utime(name, None)
    print name
    if readonly == True:
        os.chmod(name, stat.S_IREAD)

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이 저작물은 크리에이티브 커먼즈 코리아 저작자표시-비영리-변경금지 2.0 대한민국 라이선스에 따라 이용하실 수 있습니다.

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