import os
import fnmatch

def find_pattern_all(pattern, path, casesensitive):
    result = []
    for root, dirs, files in os.walk(path):
        for name in files:
            if casesensitive:
                if fnmatch.fnmatchcase(name,pattern):
                    result.append(os.path.join(root, name))
            else:
                if fnmatch.fnmatch(name.lower(), pattern.lower()):
                    result.append(os.path.join(root, name))
    return result

def find_pattern(pattern, path, casesensitive):
    for root, dirs, files in os.walk(path):
        for name in files:
            if casesensitive:
                if fnmatch.fnmatchcase(name,pattern):
                    return os.path.join(root, name)
            else:
                if fnmatch.fnmatch(name.lower(), pattern.lower()):
                    return os.path.join(root, name)
    return None

def find_all(name, path):
    result = []
    for root, dirs, files in os.walk(path):
        if name in files:
            result.append(os.path.join(root, name))
    return result

def find(name, path):
    for root, dirs, files in os.walk(path):
        if name in files:
            return os.path.join(root, name)
    return None