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#!/usr/bin/env python3
"""Calculate average size from multiple linker map files."""
import argparse
import glob
import sys
import os
# Add linkermap module to path
sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'linkermap'))
import linkermap
def expand_files(file_patterns):
"""Expand file patterns (globs) to list of files.
Args:
file_patterns: List of file paths or glob patterns
Returns:
List of expanded file paths
"""
expanded = []
for pattern in file_patterns:
if '*' in pattern or '?' in pattern:
expanded.extend(glob.glob(pattern))
else:
expanded.append(pattern)
return expanded
def combine_maps(map_files, filters=None):
"""Combine multiple map files into a list of json_data.
Args:
map_files: List of paths to linker map files or JSON files
filters: List of path substrings to filter object files (default: [])
Returns:
all_json_data: Dictionary with mapfiles list and data from each map file
"""
import json
filters = filters or []
all_json_data = {"mapfiles": [], "data": []}
for map_file in map_files:
if not os.path.exists(map_file):
print(f"Warning: {map_file} not found, skipping", file=sys.stderr)
continue
try:
if map_file.endswith('.json'):
with open(map_file, 'r', encoding='utf-8') as f:
json_data = json.load(f)
# Apply path filters to JSON data
if filters:
filtered_files = [
f for f in json_data["files"]
if f.get("path") and any(filt in f["path"] for filt in filters)
]
json_data["files"] = filtered_files
else:
json_data = linkermap.analyze_map(map_file, filters=filters)
all_json_data["mapfiles"].append(map_file)
all_json_data["data"].append(json_data)
except Exception as e:
print(f"Warning: Failed to analyze {map_file}: {e}", file=sys.stderr)
continue
return all_json_data
def compute_avg(all_json_data):
"""Compute average sizes from combined json_data.
Args:
all_json_data: Dictionary with mapfiles and data from combine_maps()
Returns:
json_average: Dictionary with averaged size data
"""
if not all_json_data["data"]:
return None
# Collect all sections preserving order
all_sections = []
for json_data in all_json_data["data"]:
for s in json_data["sections"]:
if s not in all_sections:
all_sections.append(s)
# Merge files with the same 'file' value and compute averages
file_accumulator = {} # key: file name, value: {"sections": {section: [sizes]}, "totals": [totals]}
for json_data in all_json_data["data"]:
for f in json_data["files"]:
fname = f["file"]
if fname not in file_accumulator:
file_accumulator[fname] = {"sections": {}, "totals": [], "path": f.get("path")}
file_accumulator[fname]["totals"].append(f["total"])
for section, size in f["sections"].items():
if section in file_accumulator[fname]["sections"]:
file_accumulator[fname]["sections"][section].append(size)
else:
file_accumulator[fname]["sections"][section] = [size]
# Build json_average with averaged values
files_average = []
for fname, data in file_accumulator.items():
avg_total = round(sum(data["totals"]) / len(data["totals"]))
avg_sections = {}
for section, sizes in data["sections"].items():
avg_sections[section] = round(sum(sizes) / len(sizes))
files_average.append({
"file": fname,
"path": data["path"],
"sections": avg_sections,
"total": avg_total
})
json_average = {
"mapfiles": all_json_data["mapfiles"],
"sections": all_sections,
"files": files_average
}
return json_average
def main(argv=None):
parser = argparse.ArgumentParser(description='Calculate average size from linker map files')
parser.add_argument('files', nargs='+', help='Path to map file(s) or glob pattern(s)')
parser.add_argument('-f', '--filter', dest='filters', action='append', default=[],
help='Only include object files whose path contains this substring (can be repeated)')
parser.add_argument('-o', '--out', dest='out', default='metrics',
help='Output path basename for JSON and Markdown files (default: metrics)')
parser.add_argument('-j', '--json', dest='json_out', action='store_true',
help='Write JSON output file')
parser.add_argument('-m', '--markdown', dest='markdown_out', action='store_true',
help='Write Markdown output file')
parser.add_argument('-q', '--quiet', dest='quiet', action='store_true',
help='Suppress summary output')
args = parser.parse_args(argv)
# Expand glob patterns
map_files = expand_files(args.files)
all_json_data = combine_maps(map_files, args.filters)
json_average = compute_avg(all_json_data)
if json_average is None:
print("No valid map files found", file=sys.stderr)
sys.exit(1)
if not args.quiet:
linkermap.print_summary(json_average, False)
if args.json_out:
linkermap.write_json(json_average, args.out + '.json')
if args.markdown_out:
linkermap.write_markdown(json_average, args.out + '.md')
if __name__ == '__main__':
main()
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