mirror of
https://github.com/sharkdp/bat.git
synced 2024-11-01 04:21:01 +01:00
126 lines
3.6 KiB
Python
126 lines
3.6 KiB
Python
#!/usr/bin/env python3
|
|
#
|
|
# This script goes through all languages that are supported by 'bat'. For each
|
|
# language, it loops over the corresponding file extensions and searches a
|
|
# given folder for matching files. It calls 'bat' for each of these files and
|
|
# measures the highlighting speed (number of characters per second). The script
|
|
# reports files which lead to slow highlighting speeds or errors during the
|
|
# execution of 'bat'.
|
|
#
|
|
# Requirements (external programs):
|
|
# - bat (in the $PATH)
|
|
# - fd (https://github.com/sharkdp/fd)
|
|
# - wc
|
|
|
|
import sys
|
|
import time
|
|
import os
|
|
import subprocess as sp
|
|
|
|
|
|
# Threshold speed, characters per second
|
|
THRESHOLD_SPEED = 20000
|
|
|
|
# Maximum time we allow `bat` to run
|
|
BAT_TIMEOUT_SEC = 10
|
|
|
|
# Maximum number of files to measure
|
|
MAX_NUM_FILES = 100
|
|
|
|
# Root folder for the search
|
|
SEARCH_ROOT = os.getenv("HOME")
|
|
|
|
|
|
def find_slow_files(startup_time, glob_pattern, language=None):
|
|
out = sp.check_output(
|
|
[
|
|
"fd",
|
|
"--hidden",
|
|
"--no-ignore",
|
|
"--type=file",
|
|
"--max-results",
|
|
str(MAX_NUM_FILES),
|
|
"--glob",
|
|
glob_pattern,
|
|
SEARCH_ROOT,
|
|
]
|
|
)
|
|
|
|
paths = out.split(b"\n")[:-1]
|
|
language_text = f"Language {language}, " if language else ""
|
|
print(f"{language_text}glob pattern: {glob_pattern} ({len(paths)} matches)")
|
|
|
|
for path in paths:
|
|
num_chars = int(sp.check_output(["wc", "-c", path]).split(b" ")[0].decode())
|
|
|
|
if num_chars < 500:
|
|
# It is hard to measure the exact speed for short files
|
|
continue
|
|
|
|
try:
|
|
start = time.time()
|
|
sp.check_output(["bat", "--color=always", path], timeout=BAT_TIMEOUT_SEC)
|
|
duration = time.time() - start - startup_time
|
|
|
|
if duration <= 0:
|
|
continue
|
|
|
|
highlighting_speed = num_chars / duration
|
|
|
|
if highlighting_speed < THRESHOLD_SPEED:
|
|
print(f" {highlighting_speed:10.0f} chars/s: {path.decode()}")
|
|
|
|
except sp.CalledProcessError:
|
|
print(f" Error while highlighting file '{path.decode()}'.")
|
|
|
|
except sp.TimeoutExpired:
|
|
if num_chars < THRESHOLD_SPEED * BAT_TIMEOUT_SEC:
|
|
print(f" Error: bat timed out on file '{path.decode()}'.")
|
|
else:
|
|
print(
|
|
f" Warning: bat timed out on file '{path.decode()} (but the file is large)."
|
|
)
|
|
|
|
|
|
def measure_bat_startup_speed():
|
|
min_duration = None
|
|
for _ in range(20):
|
|
start = time.time()
|
|
p = sp.Popen(
|
|
["bat", "--color=always", "--language=py"], stdin=sp.PIPE, stdout=sp.PIPE
|
|
)
|
|
p.communicate(input=b"test")
|
|
duration = time.time() - start
|
|
|
|
if not min_duration or duration < min_duration:
|
|
min_duration = duration
|
|
|
|
return min_duration
|
|
|
|
|
|
def traverse_all_languages(startup_time):
|
|
output = sp.check_output(["bat", "--list-languages"]).decode()
|
|
|
|
for line in output.strip().split("\n"):
|
|
language, extensions = line.split(":")
|
|
for ext in extensions.split(","):
|
|
find_slow_files(startup_time, ext, language)
|
|
if not ext.startswith("."):
|
|
find_slow_files(startup_time, f"*.{ext}", language)
|
|
|
|
|
|
def main():
|
|
print("Measuring 'bat' startup speed ... ", flush=True, end="")
|
|
startup_time = measure_bat_startup_speed()
|
|
print(f"{startup_time * 1000:.1f} ms")
|
|
|
|
if len(sys.argv) == 1:
|
|
traverse_all_languages(startup_time)
|
|
else:
|
|
pattern = sys.argv[1]
|
|
find_slow_files(startup_time, pattern)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|