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73 lines
2.1 KiB
73 lines
2.1 KiB
"""Helper functions."""
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import os
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import shutil
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import pathlib
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import re
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import json
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import traceback
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from asl_rulebook2.webapp import app, CONFIG_DIR
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# ---------------------------------------------------------------------
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def make_data_path( path ):
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"""Generate a path relative to the data directory."""
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dname = app.config.get( "DATA_DIR" )
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if not dname:
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return None
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return os.path.join( dname, path )
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def make_config_path( path ):
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"""Generate a path in the config directory."""
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return os.path.join( CONFIG_DIR, path )
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def load_data_file( fname, ftype, binary, logger, on_error ):
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"""Load a data file."""
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try:
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# load the file
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logger.debug("- Loading %s: %s", ftype, fname )
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if binary:
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with open( fname, mode="rb" ) as fp:
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data = fp.read()
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else:
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with open( fname, "r", encoding="utf-8" ) as fp:
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data = json.load( fp )
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except Exception as ex: #pylint: disable=broad-except
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msg = "Couldn't load \"{}\".".format( os.path.basename(fname) )
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on_error( msg, str(ex) )
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logger.error( "%s\n%s", msg, traceback.format_exc() )
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return None
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return data
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# ---------------------------------------------------------------------
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def change_extn( fname, extn ):
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"""Change a filename's extension."""
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return pathlib.Path( fname ).with_suffix( extn )
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def slugify( val ):
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"""Convert a string to a slug."""
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val = re.sub( r"\s+", " ", val ).lower()
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def fix( ch ):
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if ch.isalnum() or ch == "-":
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return ch
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if ch in " _":
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return "-"
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return "_"
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return "".join( fix(ch) for ch in val )
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def split_strip( val, sep ):
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"""Split a string and strip each field."""
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return [ v.strip() for v in val.split( sep ) ]
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def parse_int( val, default=None ):
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"""Parse an integer."""
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try:
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return int( val )
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except (ValueError, TypeError):
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return default
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def get_gs_path():
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"""Find the Ghostscript executable."""
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return app.config.get( "GS_PATH", shutil.which("gs") )
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