analysis.py

#!/usr/bin/env python3
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

import csv
import sys

GENERAL_TERMS = ["team", "developer", "author", "project"]

def is_general(authors):
    for author in authors:
        author = author.lower()
        for term in GENERAL_TERMS:
            if term in author:
                return True
    return False

# Fix loading versions.csv
csv.field_size_limit(sys.maxsize)

print("loading version authors")
version_authors = {}
version_authors_mut = {}
with open("data/version_authors.csv", "r") as f:
    reader = csv.DictReader(f)
    for line in reader:
        try:
            version_authors_mut[int(line["version_id"])].append(line["name"])
        except KeyError:
            version_authors_mut[int(line["version_id"])] = [line["name"]]
for version_id, authors in version_authors_mut.items():
    version_authors[version_id] = tuple(authors)

print("loading crate versions")
crate_versions = {}
with open("data/versions.csv", "r") as f:
    reader = csv.DictReader(f)
    for line in reader:
        try:
            crate_versions[int(line["crate_id"])].append(int(line["id"]))
        except KeyError:
            crate_versions[int(line["crate_id"])] = [int(line["id"])]

print("counting number of changes")
number_of_changes = {}
did_generalize = 0
already_general = 0
for crate_id, versions in crate_versions.items():
    different = set(version_authors.get(id, tuple()) for id in versions)
    try:
        number_of_changes[len(different)] += 1
    except KeyError:
        number_of_changes[len(different)] = 1

    if len(different) == 2:
        different = list(different)
        general0 = is_general(different[0])
        general1 = is_general(different[1])
        if general0 ^ general1:
            did_generalize += 1
        elif general0 and general1:
            already_general += 1

number_of_changes = {k: v for k, v in sorted(number_of_changes.items(), key=lambda item: item[0])}

print()
print("| # of field changes | # of crates | % of crates |")
print("| --- | --- | --- |")
for changes, crates in number_of_changes.items():
    print("| {} | {} | {:.1f}% |".format(changes - 1, crates, crates * 100 / len(crate_versions)))

print()
print("did generalize: {} ({:.1f}%)".format(did_generalize, did_generalize * 100 / number_of_changes[2]))
print("already general: {} ({:.1f}%)".format(already_general, already_general * 100 / number_of_changes[2]))