documentacion y pistas de tipo en metodos

src/audio_scanner.py

@@ -1,8 +1,8 @@
+import re
 from os import listdir
 from os.path import isfile, join
-from model import Audio
-import re
 from datetime import datetime
+from model import Audio
 
 
 def find_audios(index, audio_dir):

src/create_songbook.py

@@ -6,6 +6,7 @@ import pickle
 
 
 def generate_songbook(songs, song_numbers, out_file, dj_engine):
+    '''Generate an HTML file with a sequence of songs.'''
     # Build the list of songs
     song_list = []
     for n in song_numbers:
@@ -24,6 +25,7 @@ def generate_songbook(songs, song_numbers, out_file, dj_engine):
 
 
 def create_argparser():
+    '''Parse main's arguments.'''
     parser = latex_scanner.create_argparser()
     parser.add_argument("--songs", required=True, nargs='+', type=int, help="A list of song numbers to include.")
     parser.add_argument("--output-file", required=False, nargs=1, default=["misa.html"],

src/latex_scanner.py

@@ -11,7 +11,7 @@ from audio_scanner import find_audios
 from model import Chord, Line, Song, Verse
 
 
-def mkdir(path):
+def mkdir(path: str) -> None:
     if not os.path.exists(path):
         os.mkdir(path)
 
@@ -19,33 +19,40 @@ def mkdir(path):
 # Note that re.match prepends ^ to the pattern, whereas re.search doesn't
 
 
-def read_property(text, key):
+def read_property(text: str, key: str) -> str | None:
+    '''A parser for \\beginsong attributes.'''
     if text is None:
         return None
     match = re.search(key + "={(.*?)}", text)
     return match.group(1) if match else None
 
 
-def extra_put(extra, index, the_type, data=None):
+def extra_put(extra: list, index: int, the_type: str, data: dict|None = None):
+    '''Adds the given data (if any) to the extra list, \
+    at the given index, and tagged with the given the_type.'''
     payload = {'type': the_type, 'data': data} if data else {'type': the_type}
     if index not in extra:
-        extra[index] = []
+         extra[index] = []
     extra[index].append(payload)
 
 
 class SongLoader:
-    def __init__(self, latex_file, audio_dir=None):
+    '''Parses LaTeX files to build a collection of song objects.'''
-        self.index = 1
+
-        self.category = None
+    def __init__(self, latex_file: str, audio_dir: str | None = None):
-        self.categories = []
+        '''Initializes and populates a LaTeX reader.'''
-        self.songs = []
+        self.index: int            = 1
+        self.category: str | None  = None
+        self.categories: list[str] = []
+        self.songs: list[Song]     = []
         if audio_dir:
             self.audio_dir = audio_dir
         self.scan(latex_file)
 
-    def scan(self, latex_file):
+    def scan(self, latex_file: str) -> None:
+        '''Reads through an index file and scans each song, with the same numbers.
+        :param latex_file: The main latex file, which includes songs via \\input.'''
         main_file = open(latex_file, 'r')
-        canciones_dir = join(str(Path(latex_file).parent), "canciones")
         for line in main_file.readlines():
             # Remove newline
             if line[-1] == '\n':
@@ -61,14 +68,18 @@ class SongLoader:
                 self.category = re_chapter_match.group(1)
                 self.categories.append(self.category)
             # Traverse into \input commands if path starts w/ 'canciones/'
-            re_input_match = re.search(r"\\input{canciones/(.*?)}", line)
+            re_input_match = re.search(r"\\input{(.*?)}", line)
             if re_input_match is not None:
-                input_file = join(canciones_dir, re_input_match.group(1))
+                input_file = join(str(Path(latex_file).parent), re_input_match.group(1))
                 if not input_file.endswith(".tex"):
                     input_file += ".tex"
                 self.scan_song_file(input_file)
 
-    def scan_others(self, folder, start_index):
+    def scan_others(self, folder: str, start_index: int) -> None:
+        '''Looks for songs not found during self.scan(...).
+        :param folder:      A folder to scan through, looking for .tex files.
+        :param start_index: When numbering new songs, the first index to use.
+        '''
         self.index = start_index
         self.category = "Nuevas"
         self.categories.append(self.category)
@@ -81,22 +92,46 @@ class SongLoader:
             print("Scanning extra file", f)
             self.scan_song_file(f)
 
-    def scan_song_file(self, song_file):
+    def scan_song_file(self, song_file: str) -> None:
+        '''Scan a single song file and store any songs found.'''
         # Variables
-        ignore = False
+        ignore: bool                = False
-        current_song = None
+        current_song: Song | None   = None
-        current_verse = None
+        current_verse: Verse | None = None
-        memory = None
+        memory: str | None          = None
-        memorizing = False
+        memorizing: bool            = False
-        replay_index = 0
+        replay_index: int           = 0
-        transpose = 0
+        transpose: int              = 0
-        trfmt = "normal"
+        trfmt: str                  = "normal"
 
+        # General behaviour: read the file and scan line-by-line
+        # In each line, read char-by-char, searching for common LaTeX commands
+        # Apply the effects of these commands, and add each verse (line inside
+        # song after removing all commands) to build up each song.
+        # Commands include:
+        ### Comments: % Something something -> Ignored
+        ### Line break locations: \brk -> Ignored
+        ### Transpose:        \transpose{SEMITONES}
+        ### Begin song:       \beginsong{NAME}[METADATA]
+        ### End song:         \endsong
+        ### Verse begin/end:  \beginverse, \endverse
+        ### Chorus begin/end: \beginchorus, \endchorus
+        ### Capo:             \capo{FRET}
+        ### Chord-excl. txt.: \ifchorded, \else, \fi
+        ###    (the contents between \else and \fi are discarded)
+        ### Echoes:           \echo{TEXT}
+        ### Chord:            \[CHORD]
+        ### Chord repetition: \^
+        ### Music repetition: \lrep, \rrep
+        ### Lyric repetition: \rep{TIMES}
+        ### Chord memory:     \memorize, \replay
+        ### Transpose format: \renewcommand{\trchordformat}[2]{.*}
+        ### Other unrecognized commands: \NAME([ARG]|{ARG})*
         for line in open(song_file, "r").readlines():
             # Remove newline
             if line[-1] == '\n':
                 line = line[:-1]
-            # Remove commends and \brk commands
+            # Remove comments and \brk commands
             text = re.sub(r"%.*$", "", line)
             text = re.sub(r"\\brk({})?", '', text)
             text = re.sub(r"``", u"\u201C", text)
@@ -245,7 +280,8 @@ class SongLoader:
                 continue
             current_verse.add_line(Line(text, extras))
 
-    def sort_categories(self):
+    def sort_categories(self) -> dict[str, list[Song]]:
+        '''Returns a dictionary of categories to lists of songs (sorted by number).'''
         result = {}
         for c in self.categories:
             result[c] = sorted([s for s in self.songs if s.category == c],

src/model.py

@@ -4,7 +4,8 @@ from datetime import datetime
 import locale
 
 
-def join_list(the_list, separator="\n"):
+def join_list(the_list: list, separator: str = "\n") -> str:
+    '''Join a list of objects in a string, with a separator.'''
     return ft.reduce(lambda x, y: x + (separator if x else "") + str(y), the_list, "")