62 lines
2.1 KiB
Python
Executable File
62 lines
2.1 KiB
Python
Executable File
#! /usr/bin/python3
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#
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# Run sassc and watch for changes in source files (using inotitfy) to rebuild
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# automatically.
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#
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# Usage: sassw INPUT
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# (output will automatically be INPUT with .scss changed to .css)
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import json
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import glob
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import os
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import pyinotify
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import subprocess
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import sys
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import time
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filename = sys.argv[1]
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if os.path.isdir(filename):
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scss_filenames = [x for x in os.listdir(filename) if x.startswith('_') and x.endswith('.scss')]
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if not scss_filenames:
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print('Error: directory specified but no proper scss file within.', file=sys.stderr)
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filename = os.path.join(filename, scss_filenames[0])
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def build():
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global sources, directories
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result = subprocess.run(
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['sassc', '-mauto', filename, filename.replace('.scss', '.css')],
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capture_output=True,
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text=True)
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sys.stdout.write(result.stdout)
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sys.stderr.write(result.stderr)
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if result.returncode:
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# error
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with open(filename.replace('.scss', '.css'), 'w') as fd:
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print('''body::before {
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white-space: pre;
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font-family: monospace;
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content: "%s";
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}''' % result.stderr.replace('\n', '\\A').replace('"', '\\"'),
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file=fd)
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basepath = os.path.abspath(os.path.dirname(filename))
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sources = [os.path.abspath(os.path.join(basepath, x)) for x in json.load(open(filename.replace('.scss', '.css.map')))['sources']]
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directories = set([os.path.dirname(x) for x in sources])
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class EventManager(pyinotify.ProcessEvent):
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def process_default(self, event):
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if event.pathname in sources:
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filename = os.path.basename(event.pathname)
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print(f'{filename} changed, building', end='')
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t0 = time.time()
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build()
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print(f' ({time.time() - t0:.2f}s)')
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build()
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wm = pyinotify.WatchManager()
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notifier = pyinotify.Notifier(wm, default_proc_fun=EventManager())
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for directory in directories:
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wm.add_watch(directory, pyinotify.IN_CLOSE_WRITE)
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notifier.coalesce_events()
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print('>>> Sassw is watching for changes. Press Ctrl-C to stop.')
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notifier.loop()
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