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import os |
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import logging |
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import time |
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import requests |
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from PIL import Image |
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from .text import Text |
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log = logging.getLogger(__name__) |
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class Template: |
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"""Blank image to generate a meme.""" |
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DEFAULT = 'default' |
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EXTENSIONS = ('.png', '.jpg') |
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SAMPLE_LINES = ["YOUR TEXT", "GOES HERE"] |
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VALID_LINK_FLAG = '.valid_link.tmp' |
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MIN_HEIGHT = 240 |
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MIN_WIDTH = 240 |
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def __init__(self, key, |
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name=None, lines=None, aliases=None, link=None, root=None): |
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self.key = key |
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self.name = name or "" |
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self.lines = lines or [] |
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self.aliases = aliases or [] |
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self.link = link or "" |
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self.root = root or "" |
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def __str__(self): |
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return self.key |
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def __eq__(self, other): |
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return self.key == other.key |
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def __ne__(self, other): |
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return self.key != other.key |
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def __lt__(self, other): |
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return self.name < other.name |
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48
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@property |
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def dirpath(self): |
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return os.path.join(self.root, self.key) |
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@property |
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def path(self): |
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return self.get_path() |
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56
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@property |
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def default_text(self): |
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return Text(self.lines) |
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@property |
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def default_path(self): |
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return self.default_text.path or Text.EMPTY |
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@property |
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def sample_text(self): |
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return self.default_text or Text(self.SAMPLE_LINES) |
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68
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@property |
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def sample_path(self): |
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return self.sample_text.path |
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@property |
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def aliases_lowercase(self): |
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return [self.strip(a, keep_special=True) for a in self.aliases] |
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@property |
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def aliases_stripped(self): |
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return [self.strip(a, keep_special=False) for a in self.aliases] |
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@property |
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def styles(self): |
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return sorted(self._styles()) |
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def _styles(self): |
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"""Yield all template style names.""" |
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for filename in os.listdir(self.dirpath): |
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name, ext = os.path.splitext(filename.lower()) |
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if ext in self.EXTENSIONS and name != self.DEFAULT: |
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yield name |
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@staticmethod |
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def strip(text, keep_special=False): |
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text = text.lower().strip().replace(' ', '-') |
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if not keep_special: |
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for char in ('-', '_', '!', "'"): |
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text = text.replace(char, '') |
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return text |
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99
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def get_path(self, *styles): |
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for name in (n.lower() for n in (*styles, self.DEFAULT) if n): |
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for extension in self.EXTENSIONS: |
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path = os.path.join(self.dirpath, name + extension) |
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if os.path.isfile(path): |
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return path |
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return None |
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def validate(self, validators=None): |
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if validators is None: |
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validators = [ |
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self.validate_meta, |
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self.validate_link, |
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self.validate_size, |
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] |
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for validator in validators: |
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if not validator(): |
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return False |
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return True |
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119
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def validate_meta(self): |
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if not self.lines: |
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log.error("Template '%s' has no default lines of text", self) |
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return False |
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if not self.name: |
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log.error("Template '%s' has no name", self) |
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return False |
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if not self.name[0].isalnum(): |
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msg = "Template '%s' name %r should start with an alphanumeric" |
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log.error(msg, self, self.name) |
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return False |
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if not self.path: |
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log.error("Template '%s' has no default image", self) |
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return False |
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return True |
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135
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def validate_link(self): |
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if self.link: |
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flag = os.path.join(self.dirpath, self.VALID_LINK_FLAG) |
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if os.path.isfile(flag): |
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log.info("Link already checked: %s", self.link) |
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else: |
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log.info("Checking link %s ...", self.link) |
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try: |
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response = requests.get(self.link, timeout=5) |
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except requests.exceptions.ReadTimeout: |
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log.warning("Connection timed out") |
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return True # assume URL is OK; it will be checked again |
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if response.status_code >= 400 and response.status_code != 429: |
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msg = "Template '%s' link is invalid (%s)" |
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log.error(msg, self, response.status_code) |
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return False |
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else: |
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with open(flag, 'w') as stream: |
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stream.write(str(int(time.time()))) |
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return True |
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155
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156
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1 |
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def validate_size(self): |
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im = Image.open(self.path) |
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w, h = im.size |
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159
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1 |
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if w < self.MIN_WIDTH or h < self.MIN_HEIGHT: |
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log.error("Image must be at least %ix%i (is %ix%i)", |
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self.MIN_WIDTH, self.MIN_HEIGHT, w, h) |
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return False |
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return True |
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jacebrowning /
memegen
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This can be caused by one of the following:
1. Missing Dependencies
This error could indicate a configuration issue of Pylint. Make sure that your libraries are available by adding the necessary commands.
2. Missing __init__.py files
This error could also result from missing
__init__.pyfiles in your module folders. Make sure that you place one file in each sub-folder.