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annotate libervia/web/server/tasks/implicit/task_sass.py @ 1518:eb00d593801d

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refactoring: rename `libervia` to `libervia.web` + update imports following backend changes
author Goffi <goffi@goffi.org>
date Fri, 02 Jun 2023 16:49:28 +0200
parents libervia/server/tasks/implicit/task_sass.py@106bae41f5c8
children 54ba0f74a488
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1 #!/ur/bin/env python3
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2
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3 import json
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4 from libervia.backend.core.log import getLogger
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5 from libervia.backend.core import exceptions
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6 from libervia.web.server.tasks import task
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7
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8
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9 log = getLogger(__name__)
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10
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11 SASS_SUFFIXES = ('.sass', '.scss')
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12
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13
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14 class Task(task.Task):
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15 """Compile .sass and .scss files found in themes browser paths"""
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16 AFTER = ['js_modules']
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17
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18 async def prepare(self):
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19 # we look for any Sass file, and cancel this task if none is found
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20 sass_dirs = set()
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21 for browser_path in self.resource.browser_modules.get('themes_browser_paths', []):
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22 for p in browser_path.iterdir():
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23 if p.suffix in SASS_SUFFIXES:
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24 sass_dirs.add(browser_path)
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25 break
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26
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27 if not sass_dirs:
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28 raise exceptions.CancelError("No Sass file found")
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29
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30 # we have some Sass files, we need to install the compiler
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31 d_path = self.resource.dev_build_path
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32 package_path = d_path / "package.json"
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33 try:
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34 with package_path.open() as f:
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35 package = json.load(f)
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36 except FileNotFoundError:
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37 package = {}
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38 except Exception as e:
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39 log.error(f"Unexepected exception while parsing package.json: {e}")
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40
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41 if 'node-sass' not in package.setdefault('dependencies', {}):
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42 package['dependencies']['node-sass'] = 'latest'
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43 with package_path.open('w') as f:
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44 json.dump(package, f, indent=4)
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45
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46 cmd = self.find_command('yarnpkg', 'yarn')
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47 await self.runCommand(cmd, 'install', path=str(d_path))
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48
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49 self.WATCH_DIRS = list(sass_dirs)
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50
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51 async def on_dir_event(self, host, filepath, flags):
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52 if filepath.suffix in SASS_SUFFIXES:
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53 await self.manager.run_task_instance(self)
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54
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55 async def start(self):
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56 d_path = self.resource.dev_build_path
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57 node_sass = d_path / 'node_modules' / 'node-sass' / 'bin' / 'node-sass'
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58 for browser_path in self.resource.browser_modules['themes_browser_paths']:
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59 for p in browser_path.iterdir():
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60 if p.suffix not in SASS_SUFFIXES:
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61 continue
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62 await self.runCommand(
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63 str(node_sass),
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64 "--omit-source-map-url",
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65 "--output-style", "compressed",
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66 "--output", str(self.build_path),
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67 str(p),
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68 path=str(self.build_path)
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69 )