nosy

# nosetests continuously. 

import os
import os.path
import sys
import stat
import time
import subprocess
from fnmatch import fnmatch


def match_patterns(pathname, patterns):
    """Returns True if the pathname matches any of the given patterns."""
    for pattern in patterns:
        if fnmatch(pathname, pattern):
            return True
    return False


def filter_paths(pathnames, patterns=["*"], ignore_patterns=[]):
    """Filters from a set of paths based on acceptable patterns and
    ignorable patterns."""
    result = []
    if patterns is None:
        patterns = []
    if ignore_patterns is None:
        ignore_patterns = []
    for path in pathnames:
        if match_patterns(path, patterns) and not match_patterns(path, ignore_patterns):
            result.append(path)
    return result


def absolute_walker(path, recursive):
    if recursive:
        walk = os.walk
    else:
        def walk(path):
            return os.walk(path).next()
    for root, directories, filenames in walk(path):
        yield root
        for directory in directories:
            yield os.path.abspath(os.path.join(root, directory))
        for filename in filenames:
            yield os.path.abspath(os.path.join(root, filename))


def glob_recursive(path, patterns=["*"], ignore_patterns=[]):
    full_paths = []
    for root, directories, filenames in os.walk(path):
        for filename in filenames:
            full_path = os.path.abspath(os.path.join(root, filename))
            full_paths.append(full_path)
    filepaths = filter_paths(full_paths, patterns, ignore_patterns)
    return filepaths


def check_sum(path='.', patterns=["*"], ignore_patterns=[]):
    sum = 0
    for f in glob_recursive(path, patterns, ignore_patterns):
        stats = os.stat(f)
        sum += stats[stat.ST_SIZE] + stats[stat.ST_MTIME]
    return sum


if __name__ == "__main__":
    if len(sys.argv) > 1:
        path = sys.argv[1]
    else:
        path = '.'

    if len(sys.argv) > 2:
        command = sys.argv[2]
    else:
        #command = "make -C docs html; bin/python tests/run_tests.py"
        # The reports coverage generates all by itself are more user friendly than the ones which nosetests generates.
        command = "coverage erase; bin/python tests/run_tests.py; coverage html"
        #command = "bin/python tests/run_tests.py"


    previous_checksum = 0
    while True:
        calculated_checksum = check_sum(path, patterns=['*.py', '*.rst', '*.rst.inc'])
        if calculated_checksum != previous_checksum:
            previous_checksum = calculated_checksum
            subprocess.Popen(command, shell=True)
            time.sleep(2)