|
1
|
|
|
# -*- coding: utf-8 -*- |
|
2
|
|
|
# ----------------------------------------------------------------------------- |
|
3
|
|
|
# Copyright (c) 2015 Yann Lanthony |
|
4
|
|
|
# Copyright (c) 2017-2018 Spyder Project Contributors |
|
5
|
|
|
# |
|
6
|
|
|
# Licensed under the terms of the MIT License |
|
7
|
|
|
# (See LICENSE.txt for details) |
|
8
|
|
|
# ----------------------------------------------------------------------------- |
|
9
|
|
|
"""Source files event handler.""" |
|
10
|
|
|
|
|
11
|
|
|
# Standard library imports |
|
12
|
|
|
import os |
|
13
|
|
|
import time |
|
14
|
|
|
|
|
15
|
|
|
# Third party imports |
|
16
|
|
|
from watchdog.events import FileSystemEventHandler |
|
17
|
|
|
|
|
18
|
|
|
|
|
19
|
|
|
# py2 has no FileNotFoundError |
|
20
|
|
|
try: |
|
21
|
|
|
FileNotFoundError |
|
22
|
|
|
except NameError: |
|
23
|
|
|
FileNotFoundError = IOError |
|
|
|
|
|
|
24
|
|
|
|
|
25
|
|
|
|
|
26
|
|
|
class SourceModificationEventHandler(FileSystemEventHandler): |
|
|
|
|
|
|
27
|
|
|
|
|
28
|
|
|
def __init__(self, input_file, dest_file, watched_dir, compiler): |
|
29
|
|
|
super(SourceModificationEventHandler, self).__init__() |
|
30
|
|
|
self._input_file = input_file |
|
31
|
|
|
self._dest_file = dest_file |
|
32
|
|
|
self._compiler = compiler |
|
33
|
|
|
self._watched_dir = watched_dir |
|
34
|
|
|
self._watched_extension = os.path.splitext(self._input_file)[1] |
|
35
|
|
|
|
|
36
|
|
|
def _recompile(self): |
|
37
|
|
|
i = 0 |
|
38
|
|
|
success = False |
|
39
|
|
|
while i < 10 and not success: |
|
40
|
|
|
try: |
|
41
|
|
|
time.sleep(0.2) |
|
42
|
|
|
self._compiler(self._input_file, self._dest_file) |
|
43
|
|
|
success = True |
|
44
|
|
|
except FileNotFoundError: |
|
45
|
|
|
i += 1 |
|
46
|
|
|
|
|
47
|
|
|
def on_modified(self, event): |
|
48
|
|
|
# On Mac, event will always be a directory. |
|
49
|
|
|
# On Windows, only recompile if event's file |
|
50
|
|
|
# has the same extension as the input file |
|
51
|
|
|
we_should_recompile = ( |
|
|
|
|
|
|
52
|
|
|
event.is_directory and |
|
53
|
|
|
os.path.samefile(event.src_path, self._watched_dir) or |
|
54
|
|
|
os.path.splitext(event.src_path)[1] == self._watched_extension |
|
55
|
|
|
) |
|
56
|
|
|
if we_should_recompile: |
|
57
|
|
|
self._recompile() |
|
58
|
|
|
|
|
59
|
|
|
def on_created(self, event): |
|
60
|
|
|
if os.path.splitext(event.src_path)[1] == self._watched_extension: |
|
61
|
|
|
self._recompile() |
|
62
|
|
|
|
It is generally discouraged to redefine built-ins as this makes code very hard to read.