creekorful/exif-database
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Improve datetime parsing

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This commit is contained in:
Aloïs Micard 2024-11-15 10:29:14 +01:00
parent 3a9c6512a3
commit 8de5f155ff
1 changed files with 20 additions and 8 deletions
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28
exif_json/__init__.py
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@ -1,16 +1,18 @@
import subprocess
from datetime import datetime
from typing import List
_file_date_format = "%Y:%m:%d %H:%M:%S%z"
_original_date_format = "%Y:%m:%d %H:%M:%S.%f%z"
_original_date_format_fallback = "%Y:%m:%d %H:%M:%S.%f"
_date_fields = {
'file_modification_date/time': _file_date_format,
'file_access_date/time': _file_date_format,
'file_inode_change_date/time': _file_date_format,
'date/time_original': _original_date_format,
'create_date': _original_date_format,
'modify_date': _original_date_format,
'file_modification_date/time': [_file_date_format],
'file_access_date/time': [_file_date_format],
'file_inode_change_date/time': [_file_date_format],
'date/time_original': [_original_date_format, _original_date_format_fallback],
'create_date': [_original_date_format, _original_date_format_fallback],
'modify_date': [_original_date_format, _original_date_format_fallback],
}
_integer_fields = [
@ -58,6 +60,16 @@ _decimal_fields = [
]
def _parse_datetime(raw_value: str, available_formats: List[str]) -> datetime:
for available_format in available_formats:
try:
return datetime.strptime(raw_value, available_format)
except ValueError:
continue
raise ValueError(f"Could not parse datetime '{raw_value}' ({available_formats})")
def execute_exiftool(img_file: str) -> dict:
res = subprocess.run(
['exiftool', img_file],
@ -74,10 +86,10 @@ def execute_exiftool(img_file: str) -> dict:
parts = line.split(':', 1)
exif_metadata[parts[0].strip().lower().replace(' ', '_')] = parts[1].strip()
for (field, date_format) in _date_fields.items():
for (field, date_formats) in _date_fields.items():
if field in exif_metadata:
try:
exif_metadata[field] = datetime.strptime(exif_metadata[field], date_format)
exif_metadata[field] = _parse_datetime(exif_metadata[field], date_formats)
except ValueError as e:
print(f'Failed to convert {field} ({exif_metadata[field]}) to a datetime.')
raise e