68 lines
2.2 KiB
Python
68 lines
2.2 KiB
Python
# Copyright (c) 2025 Salvador E. Tropea
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# Copyright (c) 2025 Instituto Nacional de Tecnologïa Industrial
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# License: GPL-3.0
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# Project: ComfyUI-AudioBatch
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NODES_NAME = "AudioBatch"
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NODES_DEBUG_VAR = NODES_NAME.upper() + "_NODES_DEBUG"
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def parse_time_to_seconds(time_str: str) -> float:
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"""
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Converts a flexible time string into total seconds.
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Handles multiple formats:
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- A raw number of seconds: '123.45'
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- Seconds: '45.5'
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- Minutes and Seconds: '10:30.5'
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- Hours, Minutes, and Seconds: '01:10:30.5'
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Args:
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time_str: The string representing time.
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Returns:
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The total number of seconds as a float.
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Raises:
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ValueError: If the string format is invalid.
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"""
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if time_str is None:
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return 0.0
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if not isinstance(time_str, str):
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raise TypeError("Input must be a string.")
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if not time_str:
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return 0.0
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# First, try a direct float conversion for the simplest case.
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try:
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return float(time_str)
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except ValueError:
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# If it fails, it contains non-numeric characters, likely ':'.
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pass
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# Scalable parsing for HH:MM:SS formats
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try:
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parts = time_str.split(':')
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total_seconds = 0.0
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multiplier = 1 # Starts with seconds
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# Iterate through parts in reverse (from seconds to hours)
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for part in reversed(parts):
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if multiplier > 3600:
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raise ValueError()
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if not part: # Handles empty parts like in "1::30"
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raise RuntimeError("Empty part in time string (`{time_str}`)")
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part_number = float(part)
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if (part_number > 59 and multiplier < 3600) or part_number < 0:
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raise RuntimeError("Minutes or seconds segment is out of range (0-59) (`{time_str}`)")
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total_seconds += part_number * multiplier
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multiplier *= 60 # Next multiplier is 60 times bigger
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return total_seconds
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except (ValueError, TypeError) as e:
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# Re-raise with a clear, user-friendly message.
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raise ValueError(f"Invalid time format: '{time_str}'. "
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"Expected 'SECONDS', 'MM:SS.ss', or 'HH:MM:SS.ss'.") from e
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except RuntimeError as e:
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raise ValueError(str(e))
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