47 lines
1.7 KiB
Python
47 lines
1.7 KiB
Python
import csv
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from io import StringIO
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from urllib.parse import urlparse
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import requests
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from embedchain.loaders.base_loader import BaseLoader
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class CsvLoader(BaseLoader):
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@staticmethod
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def _detect_delimiter(first_line):
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delimiters = [",", "\t", ";", "|"]
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counts = {delimiter: first_line.count(delimiter) for delimiter in delimiters}
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return max(counts, key=counts.get)
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@staticmethod
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def _get_file_content(content):
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url = urlparse(content)
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if all([url.scheme, url.netloc]) and url.scheme not in ["file", "http", "https"]:
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raise ValueError("Not a valid URL.")
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if url.scheme in ["http", "https"]:
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response = requests.get(content)
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response.raise_for_status()
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return StringIO(response.text)
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elif url.scheme == "file":
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path = url.path
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return open(path, newline="") # Open the file using the path from the URI
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else:
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return open(content, newline="") # Treat content as a regular file path
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@staticmethod
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def load_data(content):
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"""Load a csv file with headers. Each line is a document"""
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result = []
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with CsvLoader._get_file_content(content) as file:
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first_line = file.readline()
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delimiter = CsvLoader._detect_delimiter(first_line)
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file.seek(0) # Reset the file pointer to the start
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reader = csv.DictReader(file, delimiter=delimiter)
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for i, row in enumerate(reader):
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line = ", ".join([f"{field}: {value}" for field, value in row.items()])
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result.append({"content": line, "meta_data": {"url": content, "row": i + 1}})
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return result
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