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Make tokenization respect escaped quotes. #77

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Make tokenization respect escaped quotes. #77

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912d2c2
Make tokenization respect escaped quotes.
hXtreme Dec 17, 2021
a699add
Add import for type annotation.
hXtreme Dec 18, 2021
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20 changes: 17 additions & 3 deletions process_sql.py
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@

import json
import sqlite3
from typing import List
from nltk import word_tokenize

CLAUSE_KEYWORDS = ('select', 'from', 'where', 'group', 'order', 'limit', 'intersect', 'union', 'except')
Expand Down Expand Up @@ -112,11 +113,24 @@ def get_schema_from_json(fpath):

return schema

def find_quoted_strings(text: str) -> List[int]:
quote_idxs = []
idx = 0
escaped = False
while idx < len(text):
if escaped:
idx, escaped = idx + 1, False
c = text[idx]
if c == "\\":
escaped = True
elif c == "\'" or c == "\"":
quote_idxs.append(idx)
idx += 1
return quote_idxs


def tokenize(string):
string = str(string)
string = string.replace("\'", "\"") # ensures all string values wrapped by "" problem??
quote_idxs = [idx for idx, char in enumerate(string) if char == '"']
quote_idxs = find_quoted_strings(string)
assert len(quote_idxs) % 2 == 0, "Unexpected quote"

# keep string value as token
Expand Down