# Path: chirp/common/timestamp.py
# _TIMESTAMP_FORMAT = "%Y%m%d-%H%M%S"
# _PRETTY_FORMAT = "%c"
# PROCESS_START_TIME = time.time()  # time of importing this file
# _MIN_REASONABLE_TIMESTAMP = parse_human_readable("20081130-000000")
# _MAX_REASONABLE_TIMESTAMP = parse_human_readable("20380119-000000")
# _SECONDS_PER_MINUTE = 60
# _SECONDS_PER_HOUR = 60 * _SECONDS_PER_MINUTE
# _SECONDS_PER_DAY = 24 * _SECONDS_PER_HOUR
# def now():
# def now_ms():
# def process_start_time_ms():
# def process_age_ms():
# def get_human_readable(ts=None):
# def get_human_readable_ms(ms_ts):
# def get_pretty(ts=None):
# def get_pretty_ms(ms_ts):
# def parse_human_readable(human_readable_str):
# def is_valid(ts):
# def get_human_readable_duration(duration_s):
#     def _pluralize(n, unit):
# def get_human_readable_duration_ms(duration_ms):
# 
# Path: chirp/library/audio_file.py
# class AudioFile(object):
#     def __eq__(self, other):
#         def _mutagen_id3_set(obj):
#     def has_ufid(self):
#     def ufid(self):
#     def ufid_tag(self):
#     def tpe1(self):
#     def talb(self):
#     def tit2(self):
#     def canonical_directory(self, prefix=""):
#     def canonical_filename(self):
#     def canonical_path(self, prefix=""):
# def _get_mp3(path):
# def _tag_to_int(au_file, tag_key):
# def scan_fast(path, _read_id3_hook=None):
# def scan(path, _read_id3_hook=None):
# 
# Path: chirp/library/schema.py
# def audio_file_to_tuple(au_file):
# def tuple_to_audio_file(au_file_tuple):
# def id3_tag_to_tuple(fingerprint, timestamp, tag):


import sqlite3
import mutagen.id3
from chirp.common import timestamp
from chirp.library import audio_file
from chirp.library import schema
    # greatest possible timestamp first.
    sql += " ORDER BY timestamp DESC"

    cursor = conn.execute(sql)
    au_file.mutagen_id3 = mutagen.id3.ID3()
    max_timestamp = None
    while True:
        item = cursor.fetchone()
        if item is None:
            break
        this_timestamp, this_repr = item
        # We only want to return tags from a single timestamp.
        if max_timestamp is None:
            max_timestamp = this_timestamp
        elif max_timestamp != this_timestamp:
            break
        tag = eval(this_repr, mutagen.id3.__dict__, {})
        au_file.mutagen_id3.add(tag)
    # max_timestamp is None if and only if we didn't find any
    # matching rows.
    return (max_timestamp is not None)


def _audio_file_generator(conn, sql):
    """Turns a SQL query into a generator of AudioFile objects."""
    cursor = conn.execute(sql)
    while True:
        au_file_tuple = cursor.fetchone()
        if au_file_tuple is None:
            return

# Path: chirp/common/timestamp.py
# _TIMESTAMP_FORMAT = "%Y%m%d-%H%M%S"
# _PRETTY_FORMAT = "%c"
# PROCESS_START_TIME = time.time()  # time of importing this file
# _MIN_REASONABLE_TIMESTAMP = parse_human_readable("20081130-000000")
# _MAX_REASONABLE_TIMESTAMP = parse_human_readable("20380119-000000")
# _SECONDS_PER_MINUTE = 60
# _SECONDS_PER_HOUR = 60 * _SECONDS_PER_MINUTE
# _SECONDS_PER_DAY = 24 * _SECONDS_PER_HOUR
# def now():
# def now_ms():
# def process_start_time_ms():
# def process_age_ms():
# def get_human_readable(ts=None):
# def get_human_readable_ms(ms_ts):
# def get_pretty(ts=None):
# def get_pretty_ms(ms_ts):
# def parse_human_readable(human_readable_str):
# def is_valid(ts):
# def get_human_readable_duration(duration_s):
#     def _pluralize(n, unit):
# def get_human_readable_duration_ms(duration_ms):
# 
# Path: chirp/library/audio_file.py
# class AudioFile(object):
#     def __eq__(self, other):
#         def _mutagen_id3_set(obj):
#     def has_ufid(self):
#     def ufid(self):
#     def ufid_tag(self):
#     def tpe1(self):
#     def talb(self):
#     def tit2(self):
#     def canonical_directory(self, prefix=""):
#     def canonical_filename(self):
#     def canonical_path(self, prefix=""):
# def _get_mp3(path):
# def _tag_to_int(au_file, tag_key):
# def scan_fast(path, _read_id3_hook=None):
# def scan(path, _read_id3_hook=None):
# 
# Path: chirp/library/schema.py
# def audio_file_to_tuple(au_file):
# def tuple_to_audio_file(au_file_tuple):
# def id3_tag_to_tuple(fingerprint, timestamp, tag):


# Path: chirp/library/database.py
import sqlite3
import mutagen.id3
from chirp.common import timestamp
from chirp.library import audio_file
from chirp.library import schema

    # greatest possible timestamp first.
    sql += " ORDER BY timestamp DESC"

    cursor = conn.execute(sql)
    au_file.mutagen_id3 = mutagen.id3.ID3()
    max_timestamp = None
    while True:
        item = cursor.fetchone()
        if item is None:
            break
        this_timestamp, this_repr = item
        # We only want to return tags from a single timestamp.
        if max_timestamp is None:
            max_timestamp = this_timestamp
        elif max_timestamp != this_timestamp:
            break
        tag = eval(this_repr, mutagen.id3.__dict__, {})
        au_file.mutagen_id3.add(tag)
    # max_timestamp is None if and only if we didn't find any
    # matching rows.
    return (max_timestamp is not None)


def _audio_file_generator(conn, sql):
    """Turns a SQL query into a generator of AudioFile objects."""
    cursor = conn.execute(sql)
    while True:
        au_file_tuple = cursor.fetchone()
        if au_file_tuple is None:
            return

        au_file = schema.tuple_to_audio_file(au_file_tuple)