import traceback
import sys, os
import html
import re
import polars as pl
sys.path.insert(
0,
os.path.abspath(
os.path.join(os.path.dirname(os.path.abspath(__file__)), "../carousel/src")
),
)
from carousel import match_from_prefs
print("Content-Type: text/html\n")
message = ""
content_type = os.environ.get("CONTENT_TYPE", "")
content_length = int(os.environ.get("CONTENT_LENGTH", 0) or 0)
boundary = content_type.split("boundary=")[-1].encode()
body = sys.stdin.buffer.read(content_length)
parts = body.split(b"--" + boundary)
spreadsheet = None
for part in parts:
if b"Content-Disposition" in part and b'name="spreadsheet"' in part:
header, _, data = part.partition(b"\r\n\r\n")
filename_match = re.search(rb'filename="([^"]+)"', header)
if filename_match:
filename = filename_match.group(1).decode()
filedata = data.rstrip(b"\r\n--")
spreadsheet = (filename, filedata)
break
if spreadsheet is not None:
filename, filedata = spreadsheet
if filename and filedata:
filepath = os.path.join("/tmp", filename)
with open(filepath, "wb") as f:
f.write(filedata)
try:
if filename.endswith(".csv"):
df = pl.read_csv(filepath)
elif filename.endswith((".xlsx", ".xls")):
df = pl.read_excel(filepath)
else:
message = """
Error
File extension is not valid. Use CSV (.csv) or Excel (.xlsx, .xls).
Go Back
"""
# TODO: unpack df appropriately
if df is not None:
# Normalize
df = df.with_columns(
[
pl.col(c)
.cast(pl.Utf8)
.str.strip_chars()
.cast(pl.Int64, strict=False)
.fill_null(0)
for c in df.columns
]
)
match = match_from_prefs(df) # Solve!
message = f"""
The TA-optimal (Gale-Shapley) match is:
{match}
Go Back
"""
else:
message = """
Error
DataFrame was empty.
Go Back
"""
except Exception as e:
message = f"""
Error
Internal Error Encountered: {e}
Go Back
"""
traceback.print_exc()
else:
message = """
Error
Filename or File Data not found/valid in form submission.
Go Back
"""
else:
message = """
Error
No file field found in the form.
Go Back
"""
print("""
Carousel - Stable Matcher
""")
print(message)
print("""
""")