count Java import classes

cout-java-import-classes.py

"""
Copyright 2015 Guoliang Li
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
    http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""


import collections
import os


def get_java_source_files(source_folder):
    java_source_files = list()
    for root, dirs, files in os.walk(source_folder):
        for f in files:
            if f.endswith(".java"):
                java_source_files.append(os.path.join(root, f))
    return java_source_files


def count_imports(source_folder):
    import_counts = dict()

    for source_file in get_java_source_files(source_folder):
        with open(source_file) as f:
            for l in f.readlines():
                if l.startswith("import "):
                    klass = l[len("import"):].strip()[:-1]
                    import_counts[klass] = import_counts.get(klass, 0) + 1

    return collections.OrderedDict(sorted(import_counts.items()))


if __name__ == '__main__':
    source_folder = raw_input("source folder: ").strip()

    import_class_count = count_imports(source_folder)
    for (klass, count) in import_class_count.items():
        print klass, count