[WIP] Does not work

patacrep/latex/lexer.py

@@ -12,7 +12,7 @@ tokens = (
     'LBRACE',
     'RBRACE',
     'COMMAND',
-    'NEWLINE',
+    'ENDOFLINE',
     'COMMA',
     'EQUAL',
     'CHARACTER',
@@ -34,7 +34,7 @@ class SimpleLexer:
     t_LBRACE = r'{'
     t_RBRACE = r'}'
     t_COMMAND = r'\\([@a-zA-Z]+|[^\\])'
-    t_NEWLINE = r'\\\\'
+    t_ENDOFLINE = r'\\\\'
     SPECIAL_CHARACTERS = (
         t_LBRACKET +
         t_RBRACKET +
@@ -59,7 +59,7 @@ class SimpleLexer:
 
     # Define a rule so we can track line numbers
     @staticmethod
-    def t_newline(token):
+    def t_endofline(token):
         r'\n+'
         token.lexer.lineno += len(token.value)
 

patacrep/latex/syntax.py

@@ -27,7 +27,7 @@ class LatexParser(Parser):
         """expression : brackets expression
                       | braces expression
                       | command expression
-                      | NEWLINE expression
+                      | ENDOFLINE expression
                       | beginsong expression
                       | word expression
                       | SPACE expression
@@ -172,7 +172,7 @@ class LatexParser(Parser):
 
     @staticmethod
     def p_titles_next(symbols):
-        """titles_next : NEWLINE title titles_next
+        """titles_next : ENDOFLINE title titles_next
                        | empty
         """
         if len(symbols) == 2:

patacrep/songs/chordpro/ast.py

@@ -2,47 +2,11 @@
 
 # pylint: disable=too-few-public-methods
 
+from collections import OrderedDict
 import logging
 
 LOGGER = logging.getLogger()
 
-class OrderedLifoDict:
-    """Ordered (LIFO) dictionary.
-
-    Mimics the :class:`dict` dictionary, with:
-    - dictionary is ordered: the order the keys are kept (as with
-      :class:`collections.OrderedDict`), excepted that:
-    - LIFO: the last item is reterned first when iterating.
-    """
-
-    def __init__(self, default=None):
-        if default is None:
-            self._keys = []
-            self._values = {}
-        else:
-            self._keys = list(default.keys())
-            self._values = default.copy()
-
-    def values(self):
-        """Same as :meth:`dict.values`."""
-        for key in self:
-            yield self._values[key]
-
-    def __iter__(self):
-        yield from self._keys
-
-    def __setitem__(self, key, value):
-        if key not in self._keys:
-            self._keys.insert(0, key)
-        self._values[key] = value
-
-    def __getitem__(self, key):
-        return self._values[key]
-
-    def get(self, key, default=None):
-        """Same as :meth:`dict.get`."""
-        return self._values.get(key, default)
-
 def _indent(string):
     """Return and indented version of argument."""
     return "\n".join(["  {}".format(line) for line in string.split('\n')])
@@ -100,8 +64,12 @@ class Line(AST):
         self.line = []
 
     def prepend(self, data):
-        """Add an object at the beginning of line."""
-        self.line.insert(0, data)
+        """Add an object at the beginning of line.
+
+        Does nothing if argument is `None`.
+        """
+        if data is not None:
+            self.line.insert(0, data)
         return self
 
     def strip(self):
@@ -109,14 +77,17 @@ class Line(AST):
         while True:
             if not self.line:
                 return self
-            if isinstance(self.line[0], Space):
+            if isinstance(self.line[0], Space) or isinstance(self.line[0], Error):
                 del self.line[0]
                 continue
-            if isinstance(self.line[-1], Space):
+            if isinstance(self.line[-1], Space) or isinstance(self.line[-1], Error):
                 del self.line[-1]
                 continue
             return self
 
+    def is_empty(self):
+        return len(self.strip().line) == 0
+
 class LineElement(AST):
     """Something present on a line."""
     # pylint: disable=abstract-method
@@ -206,26 +177,29 @@ class Song(AST):
     def __init__(self, filename):
         super().__init__()
         self.content = []
-        self.meta = OrderedLifoDict()
+        self.meta = OrderedDict()
         self._authors = []
         self._titles = []
         self._subtitles = []
-        self._keys = []
         self.filename = filename
 
     def add(self, data):
         """Add an element to the song"""
         if isinstance(data, Error):
-            return self
+            pass
         elif data is None:
             # New line
-            if not (self.content and isinstance(self.content[0], Newline)):
-                self.content.insert(0, Newline())
-        elif isinstance(data, Line):
+            if not (self.content and isinstance(self.content[0], EndOfLine)):
+                self.content.insert(0, EndOfLine())
+        elif isinstance(data, Line) or isinstance(data, NewLine):
             # Add a new line, maybe in the current verse.
-            if not (self.content and isinstance(self.content[0], Verse)):
-                self.content.insert(0, Verse())
-            self.content[0].prepend(data.strip())
+            if not data.is_empty():
+                if not (self.content and isinstance(self.content[0], Verse)):
+                    self.content.insert(0, Verse())
+                self.content[0].prepend(data.strip())
+        elif isinstance(data, Directive) and data.inline:
+            # Add a directive in the content of the song.
+            self.content.append(data)
         elif data.inline:
             # Add an object in the content of the song.
             self.content.insert(0, data)
@@ -242,13 +216,13 @@ class Song(AST):
 
     def add_title(self, data):
         """Add a title"""
-        self._titles.insert(0, data.argument)
+        self._titles.append(data.argument)
 
     def add_cumulative(self, data):
         """Add a cumulative argument into metadata"""
         if data.keyword not in self.meta:
             self.meta[data.keyword] = []
-        self.meta[data.keyword].insert(0, data)
+        self.meta[data.keyword].append(data)
 
     def get_data_argument(self, keyword, default):
         """Return `self.meta[keyword].argument`.
@@ -267,7 +241,7 @@ class Song(AST):
 
     def add_subtitle(self, data):
         """Add a subtitle"""
-        self._subtitles.insert(0, data.argument)
+        self._subtitles.append(data.argument)
 
     @property
     def titles(self):
@@ -276,7 +250,7 @@ class Song(AST):
 
     def add_author(self, data):
         """Add an auhor."""
-        self._authors.insert(0, data.argument)
+        self._authors.append(data.argument)
 
     @property
     def authors(self):
@@ -286,19 +260,20 @@ class Song(AST):
     def add_key(self, data):
         """Add a new {key: foo: bar} directive."""
         key, *argument = data.argument.split(":")
-        if 'keys' not in self.meta:
-            self.meta['keys'] = []
-        self.meta['keys'].insert(0, Directive(
+        if 'morekeys' not in self.meta:
+            self.meta['morekeys'] = []
+        self.meta['morekeys'].append(Directive(
             key.strip(),
             ":".join(argument).strip(),
             ))
 
-class Newline(AST):
+class EndOfLine(AST):
     """New line"""
-    _template = "newline"
+    _template = "endofline"
 
 class Directive(AST):
     """A directive"""
+    meta = True
 
     def __init__(self, keyword, argument=None):
         super().__init__()
@@ -322,6 +297,21 @@ class Directive(AST):
     def __str__(self):
         return self.argument
 
+    @classmethod
+    def create(cls, keyword, argument=None):
+        if keyword == "newline":
+            return NewLine(keyword, argument)
+        else:
+            return cls(keyword, argument)
+
+class NewLine(Directive):
+    keyword = "newline"
+    _template = "newline"
+    meta = False
+
+    def strip(self):
+        return self
+
 class Define(Directive):
     """A chord definition.
 

patacrep/songs/chordpro/data/chordpro/content_endofline

@@ -0,0 +1 @@
+

patacrep/songs/chordpro/data/chordpro/content_newline

@@ -1 +1 @@
-
+{newline}

patacrep/songs/chordpro/data/chordpro/song_header

@@ -25,7 +25,7 @@
   {(( 'cov' )): (( metadata['cov'].argument|search_image ))}
 (* endif *)
 
-(*- for key in metadata.keys -*)
+(*- for key in metadata.morekeys -*)
   {key: (( key.keyword )): (( key.argument ))}
 (* endfor *)
 

patacrep/songs/chordpro/data/html/content_endofline

@@ -0,0 +1 @@
+

patacrep/songs/chordpro/data/html/content_newline

@@ -1 +1 @@
-
+<br/>

patacrep/songs/chordpro/data/html/song_header

@@ -23,7 +23,7 @@
 
 (* include 'content_metadata_cover' *)
 
-(*- for key in metadata.keys -*)
+(*- for key in metadata.morekeys -*)
   {key: (( key.keyword )): (( key.argument ))}
 (* endfor *)
 

patacrep/songs/chordpro/data/latex/content_endofline

@@ -0,0 +1,2 @@
+
+

patacrep/songs/chordpro/data/latex/content_newline

@@ -1,2 +1 @@
-
-
+~\\

patacrep/songs/chordpro/data/latex/song

@@ -30,7 +30,7 @@
   (* if 'cov' in metadata *)
   cov={(( metadata["cov"].argument|search_image ))},
   (* endif *)
-  (* for key in metadata.keys *)
+  (* for key in metadata.morekeys *)
   (( key.keyword ))={(( key.argument ))},
   (* endfor *)
 ]

patacrep/songs/chordpro/lexer.py

@@ -9,7 +9,7 @@ LOGGER = logging.getLogger()
 tokens = (
     'LBRACE',
     'RBRACE',
-    'NEWLINE',
+    'ENDOFLINE',
     'COLON',
     'WORD',
     'SPACE',
@@ -81,14 +81,14 @@ class ChordProLexer:
         return token
 
     t_tablature_TEXT = r'[^\n]+'
-    t_tablature_NEWLINE = r'\n'
+    t_tablature_ENDOFLINE = r'\n'
 
     def __init__(self):
         self.__class__.lexer = lex.lex(module=self)
 
     # Define a rule so we can track line numbers
     @staticmethod
-    def t_NEWLINE(token):
+    def t_ENDOFLINE(token):
         r'[\n\r]'
         token.lexer.lineno += 1
         return token

patacrep/songs/chordpro/syntax.py

@@ -16,26 +16,25 @@ class ChordproParser(Parser):
     def __init__(self, filename=None):
         super().__init__()
         self.tokens = tokens
-        self.filename = filename
+        self.song = ast.Song(filename)
 
     def p_song(self, symbols):
         """song : block song
                 | empty
         """
         if len(symbols) == 2:
-            symbols[0] = ast.Song(self.filename)
+            symbols[0] = self.song
         else:
             symbols[0] = symbols[2].add(symbols[1])
 
     @staticmethod
     def p_block(symbols):
         """block : SPACE block
-                 | directive NEWLINE
-                 | line NEWLINE
-                 | chorus NEWLINE
-                 | tab NEWLINE
-                 | bridge NEWLINE
-                 | NEWLINE
+                 | line ENDOFLINE
+                 | chorus ENDOFLINE
+                 | tab ENDOFLINE
+                 | bridge ENDOFLINE
+                 | ENDOFLINE
         """
         if len(symbols) == 3 and isinstance(symbols[1], str):
             symbols[0] = symbols[2]
@@ -133,16 +132,22 @@ class ChordproParser(Parser):
                 symbols[0] = ast.Error()
                 return
 
-            symbols[0] = self._parse_define(match.groupdict())
-            if symbols[0] is None:
+            define = self._parse_define(match.groupdict())
+            if define is None:
                 self.error(
                     line=symbols.lexer.lineno,
                     message="Invalid chord definition '{}'.".format(argument),
                     )
                 symbols[0] = ast.Error()
+                return
+            self.song.add(define)
 
         else:
-            symbols[0] = ast.Directive(keyword, argument)
+            directive = ast.Directive.create(keyword, argument)
+            if directive.meta:
+                self.song.add(directive)
+            else:
+                symbols[0] = directive
 
     @staticmethod
     def p_directive_next(symbols):
@@ -164,6 +169,7 @@ class ChordproParser(Parser):
     def p_line(symbols):
         """line : word line_next
                 | chord line_next
+                | directive line_next
         """
         symbols[0] = symbols[2].prepend(symbols[1])
 
@@ -172,6 +178,7 @@ class ChordproParser(Parser):
         """line_next : word line_next
                      | space line_next
                      | chord line_next
+                     | directive line_next
                      | empty
         """
         if len(symbols) == 2:
@@ -196,13 +203,13 @@ class ChordproParser(Parser):
 
     @staticmethod
     def p_chorus(symbols):
-        """chorus : SOC maybespace NEWLINE chorus_content EOC maybespace
+        """chorus : SOC maybespace ENDOFLINE chorus_content EOC maybespace
         """
         symbols[0] = symbols[4]
 
     @staticmethod
     def p_chorus_content(symbols):
-        """chorus_content : line NEWLINE chorus_content
+        """chorus_content : line ENDOFLINE chorus_content
                           | SPACE chorus_content
                           | empty
         """
@@ -215,13 +222,13 @@ class ChordproParser(Parser):
 
     @staticmethod
     def p_bridge(symbols):
-        """bridge : SOB maybespace NEWLINE bridge_content EOB maybespace
+        """bridge : SOB maybespace ENDOFLINE bridge_content EOB maybespace
         """
         symbols[0] = symbols[4]
 
     @staticmethod
     def p_bridge_content(symbols):
-        """bridge_content : line NEWLINE bridge_content
+        """bridge_content : line ENDOFLINE bridge_content
                           | SPACE bridge_content
                           | empty
         """
@@ -235,13 +242,13 @@ class ChordproParser(Parser):
 
     @staticmethod
     def p_tab(symbols):
-        """tab : SOT maybespace NEWLINE tab_content EOT maybespace
+        """tab : SOT maybespace ENDOFLINE tab_content EOT maybespace
         """
         symbols[0] = symbols[4]
 
     @staticmethod
     def p_tab_content(symbols):
-        """tab_content : NEWLINE tab_content
+        """tab_content : ENDOFLINE tab_content
                        | TEXT tab_content
                        | SPACE tab_content
                        | empty

test/test_chordpro/metadata.sgc

@@ -15,5 +15,7 @@
 
 {comment: Comment}
 {guitar_comment: GuitarComment}
-{image: Image}
 {partition: Lilypond}
+{image: Image}
+
+Foo

test/test_chordpro/metadata.source

@@ -15,5 +15,7 @@
 {key: foo: Foo}
 {comment: Comment}
 {guitar_comment: GuitarComment}
-{image: Image}
 {partition: Lilypond}
+{image: Image}
+
+Foo

test/test_chordpro/metadata.tex

@@ -19,7 +19,10 @@ Subtitle5}[
 
 \textnote{Comment}
 \musicnote{GuitarComment}
-\image{Image}
 \lilypond{Lilypond}
+\image{Image}
 
+\begin{verse}
+    Foo
+\end{verse}
 \endsong

test/test_chordpro/newline.sgc

@@ -0,0 +1,41 @@
+{language: english}
+
+This is a verse
+With a new line
+{newline}
+The second part of the verse
+Is this line
+
+
+Here is a new line at the end
+{newline}
+
+
+Foo bar
+
+
+{newline}
+And a new line
+At the beginning
+
+
+{start_of_chorus}
+    New lines can also
+    {newline}
+    Be in chorus
+{end_of_chorus}
+
+
+{start_of_bridge}
+    New lines can also
+    {newline}
+    Be in bridges
+{end_of_bridge}
+
+
+New lines can also
+{newline}
+Be surrounded by spaces
+
+
+New lines can {newline} appear in the middle of a line

test/test_chordpro/newline.source

@@ -0,0 +1,32 @@
+This is a verse
+With a new line
+{newline}
+The second part of the verse
+Is this line
+
+Here is a new line at the end
+{newline}
+
+Foo bar
+
+{newline}
+And a new line
+At the beginning
+
+{soc}
+New lines can also
+{newline}
+Be in chorus
+{eoc}
+
+{sob}
+New lines can also
+{newline}
+Be in bridges
+{eob}
+
+New lines can also
+    {newline}    
+Be surrounded by spaces
+
+New lines can {newline} appear in the middle of a line

test/test_chordpro/newline.tex

@@ -0,0 +1,61 @@
+\selectlanguage{english}
+
+\beginsong{}[
+  by={
+  },
+]
+
+
+\begin{verse}
+    This is a verse
+    With a new line
+    ~\\
+    The second part of the verse
+    Is this line
+\end{verse}
+
+
+\begin{verse}
+    Here is a new line at the end
+    ~\\
+\end{verse}
+
+
+\begin{verse}
+    Foo bar
+\end{verse}
+
+
+\begin{verse}
+    ~\\
+    And a new line
+    At the beginning
+\end{verse}
+
+
+\begin{chorus}
+    New lines can also
+    ~\\
+    Be in chorus
+\end{chorus}
+
+
+\begin{bridge}
+    New lines can also
+    ~\\
+    Be in bridges
+\end{bridge}
+
+
+\begin{verse}
+    New lines can also
+    ~\\
+    Be surrounded by spaces
+\end{verse}
+
+
+\begin{verse}
+    New lines can ~\\ appear in the middle of a line
+\end{verse}
+
+\endsong