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import os
# db class that works for both html and md files
class Database:
def __init__(self, db_path: str):
self.db_path: str = db_path
self.e: dict[str, tuple[float, float, list[str]]] = dict()
self.__read()
def update_tags(self, file_name: str,
tags: list[str]) -> None:
if file_name in self.e:
cts, mts, _ = self.e[file_name]
self.e[file_name] = (cts, mts, tags)
# returns a bool that indicates if the entry
# was (includes new entries) or wasn't updated
# 0.0 means no mod
def update(self, file_name: str,
remove: str=None) -> bool:
# initial default values
f: str = file_name
tags: list[str] = []
if remove is not None:
f = file_name.replace(remove, '')
# get current time, needs actual file name
time: float = os.stat(file_name).st_mtime
# three cases, 1) entry didn't exist,
# 2) entry hasn't been mod and,
# 3) entry has been mod
#1)
if f not in self.e:
self.e[f] = (time, 0.0, tags)
return True
old_time, old_mod_time, tags = self.e[f]
# 2)
if old_mod_time == 0.0:
if time > old_time:
self.e[f] = (old_time, time, tags)
return True
# 3)
else:
if time > old_mod_time:
self.e[f] = (old_time, time, tags)
return True
return False
def write(self) -> None:
with open(self.db_path, 'w') as file:
# write each k,v pair in dict to db file
for k, v in self.e.items():
t: str = None
if len(v[2]) == 0:
t = '-'
else:
t = ','.join(v[2])
file.write(f'{k} {v[0]} {v[1]} {t}\n')
def __read(self) -> None:
# only if the path exists and it is a file
if os.path.exists(self.db_path) and os.path.isfile(self.db_path):
# get all db file lines
lines: list[str] = None
with open(self.db_path, 'r') as file:
lines = file.readlines()
# parse each entry and populate accordingly
l: list[str] = None
# l=list of values in entry
for line in lines:
l = tuple(line.strip().split())
if len(l) != 4:
raise Exception('db entry doesn\'t contain 4 elements')
t: list[str] = None
if l[3] == '-':
t = []
else:
t = l[3].split(',')
self.e[l[0]] = (float(l[1]), float(l[2]), t)
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