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# -*- coding: utf-8 -*-
from typing import Any
from typing import List
from typing import Optional
from clevercsv import __version__
from clevercsv.dialect import SimpleDialect
def parse_int(val: Any, name: str) -> Optional[int]:
"""Parse a number to an integer if possible"""
if val is None:
return val
try:
return int(val)
except ValueError:
raise ValueError(
f"Please provide a number for {name}, instead of {val}"
)
def generate_code(
filename: str,
dialect: SimpleDialect,
encoding: Optional[str],
use_pandas: bool = False,
) -> List[str]:
assert dialect.quotechar is not None
d = '"\\t"' if dialect.delimiter == "\t" else f'"{dialect.delimiter}"'
q = '"%s"' % (dialect.quotechar.replace('"', '\\"'))
e = repr(f"{dialect.escapechar}").replace("'", '"')
base = [
"",
f"# Code generated with CleverCSV version {__version__}",
"",
"import clevercsv",
]
if use_pandas:
return [
*base,
"",
f'df = clevercsv.read_dataframe("{filename}", delimiter={d}, '
f"quotechar={q}, escapechar={e})",
"",
]
enc = "None" if encoding is None else f'"{encoding}"'
lines = [
*base,
"",
f'with open("{filename}", "r", newline="", encoding={enc}) as fp:',
" reader = clevercsv.reader(fp, "
+ f"delimiter={d}, quotechar={q}, escapechar={e})",
" rows = list(reader)",
"",
]
return lines
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