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Update CHWALA reader to handle daily zip archives of .dat files #253

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Update CHWALA reader to handle daily zip archives of .dat files #253

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38 changes: 17 additions & 21 deletions disdrodb/l0/readers/LPM/KIT/CHWALA.py
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Original file line number Diff line number Diff line change
Expand Up @@ -16,13 +16,14 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# -----------------------------------------------------------------------------.
"""DISDRODB reader for GID LPM sensors not measuring wind."""
import os
"""DISDRODB reader for KIT IMK-IFU Thies LPM disdrometer."""
import zipfile

import pandas as pd

from disdrodb.l0.l0_reader import is_documented_by, reader_generic_docstring
from disdrodb.l0.l0a_processing import read_raw_text_file
from disdrodb.utils.logger import log_error


@is_documented_by(reader_generic_docstring)
Expand Down Expand Up @@ -199,27 +200,22 @@ def read_txt_file(file, filename):
# Return the dataframe adhering to DISDRODB L0 standards
return df

#### TEMPORARY: to read just a single 1-min timestep
df = read_txt_file(file=filepath, filename=os.path.basename(filepath))

#### FUTURE: Iterate over all files (aka 1-min timesteps) in the daily zip archive
# - Each file contain a single timestep !
# list_df = []
# with zipfile.ZipFile(filepath, "r") as zip_ref:
# filenames = sorted(zip_ref.namelist())
# for filename in filenames:
# if filename.endswith(".dat"):
# # Open file
# with zip_ref.open(filename) as file:
# try:
# df = read_txt_file(file=file, filename=filename)
# list_df.append(df)
# except Exception as e:
# msg = f"An error occurred while reading {filename}. The error is: {e}."
# log_error(logger=logger, msg=msg, verbose=True)
#### Iterate over all .dat files in the daily zip archive
list_df = []
with zipfile.ZipFile(filepath, "r") as zip_ref:
filenames = sorted(zip_ref.namelist())
for filename in filenames:
if filename.endswith(".dat"):
with zip_ref.open(filename) as file:
try:
df = read_txt_file(file=file, filename=filename)
list_df.append(df)
except Exception as e:
msg = f"An error occurred while reading {filename}. The error is: {e}."
log_error(logger=logger, msg=msg, verbose=True)

# Concatenate all dataframes into a single one
# df = pd.concat(list_df)
df = pd.concat(list_df)

# Return the dataframe adhering to DISDRODB L0 standards
return df