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refactor: Reorganize redact script and improve code formatting

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Paul Gauthier 2025-03-11 19:30:46 -07:00 • committed by Paul Gauthier (aider)
parent 533e5ec03f
commit 9513d307a1
1 changed files with 29 additions and 24 deletions
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53
redact.py → scripts/redact-cast.py
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@ -1,41 +1,45 @@
#!/usr/bin/env python3
import json
import os
import re
import sys
import os
import json
# Speed up factor for the recording
SPEEDUP = 1.25
def process_file(input_path, output_path):
"""
Process an asciinema cast v2 file to filter out certain sections based on ANSI cursor commands.
Format: First line is a JSON header. Subsequent lines are JSON arrays: [timestamp, "o", "text"]
If a text field contains "\u001b[ROW;COL]H" followed by "Atuin", skip it and all subsequent
records until finding a text with "\u001b[ROW;(COL-1)H".
Maintains consistent timestamps by:
1. Not advancing time during skip sections
2. Compressing any long gaps to 0.5 seconds maximum
"""
skip_mode = False
target_pattern = None
ansi_pattern = re.compile(r'\u001b\[(\d+);(\d+)H')
ansi_pattern = re.compile(r"\u001b\[(\d+);(\d+)H")
is_first_line = True
last_timestamp = 0.0
time_offset = 0.0 # Accumulator for time to subtract
max_gap = 0.5 # Maximum allowed time gap between events
with open(input_path, 'r', encoding='utf-8') as infile, open(output_path, 'w', encoding='utf-8') as outfile:
with (
open(input_path, "r", encoding="utf-8") as infile,
open(output_path, "w", encoding="utf-8") as outfile,
):
for line in infile:
# Always include the header (first line)
if is_first_line:
outfile.write(line)
is_first_line = False
continue
# Parse the JSON record
try:
record = json.loads(line)
@ -43,28 +47,28 @@ def process_file(input_path, output_path):
# If not a valid record, just write it out
outfile.write(line)
continue
current_timestamp = float(record[0])
text = record[2] # The text content
# If we're not in skip mode, check if we need to enter it
if not skip_mode:
if '\u001b[' in text and 'Atuin' in text:
if "\u001b[" in text and "Atuin" in text:
match = ansi_pattern.search(text)
if match:
row = match.group(1)
col = int(match.group(2))
# Create pattern for the ending sequence
target_pattern = f'\u001b[{row};{col-1}H'
target_pattern = f"\u001b[{row};{col-1}H"
skip_mode = True
# Start tracking time to subtract
skip_start_time = current_timestamp
continue # Skip this record
# If we're not skipping, write the record with adjusted timestamp
# First, adjust for skipped sections
adjusted_timestamp = current_timestamp - time_offset
# Then, check if there's a long gap to compress
if last_timestamp > 0:
time_gap = adjusted_timestamp - last_timestamp
@ -73,27 +77,27 @@ def process_file(input_path, output_path):
excess_time = time_gap - max_gap
time_offset += excess_time
adjusted_timestamp -= excess_time
# Ensure timestamps never go backward
adjusted_timestamp = max(adjusted_timestamp, last_timestamp)
last_timestamp = adjusted_timestamp
# Apply speedup factor to the timestamp
record[0] = adjusted_timestamp / SPEEDUP
outfile.write(json.dumps(record) + '\n')
outfile.write(json.dumps(record) + "\n")
# If we're in skip mode, check if we should exit it
else:
if target_pattern in text:
skip_mode = False
# Calculate how much time to subtract from future timestamps
time_offset += (current_timestamp - skip_start_time)
time_offset += current_timestamp - skip_start_time
# Add a 0.5 second pause after each skip section
last_timestamp += 0.5
# Write this record with adjusted timestamp
adjusted_timestamp = current_timestamp - time_offset
# Check if there's a long gap to compress
if last_timestamp > 0:
time_gap = adjusted_timestamp - last_timestamp
@ -102,19 +106,20 @@ def process_file(input_path, output_path):
excess_time = time_gap - max_gap
time_offset += excess_time
adjusted_timestamp -= excess_time
# Ensure timestamps never go backward
adjusted_timestamp = max(adjusted_timestamp, last_timestamp)
last_timestamp = adjusted_timestamp
# Apply speedup factor to the timestamp
record[0] = adjusted_timestamp / SPEEDUP
outfile.write(json.dumps(record) + '\n')
outfile.write(json.dumps(record) + "\n")
# Otherwise we're still in skip mode, don't write anything
except json.JSONDecodeError:
# If we can't parse the line as JSON, include it anyway
outfile.write(line)
if __name__ == "__main__":
if len(sys.argv) != 3:
print(f"Usage: {os.path.basename(sys.argv[0])} input_file output_file")