Allow setting image sizes

patacrep/data/templates/songs/chordpro/chordpro/content_image

@@ -1 +1 @@
-{image: (( content.argument|search_image ))}
+{image: "(( content.filename|search_image ))" ((content.size|render_size))}

patacrep/data/templates/songs/chordpro/latex/content_image

@@ -1,6 +1,6 @@
 (* block image *)
-(* set image = content.argument|search_image|path2posix *)
+(* set image = content.filename|search_image|path2posix *)
 (* if image *)
-\image{(( image ))}
+\image[(( content.size|render_size ))]{(( image ))}
 (*- endif *)
 (*- endblock *)

patacrep/data/templates/styles/patacrep.sty

@@ -6,6 +6,7 @@
 \NeedsTeXFormat{LaTeX2e}[1994/06/01]
 \ProvidesPackage{patacrep}[2014/06/17 Patacrep Package, version 1]
 
+\RequirePackage[space]{grffile}
 \RequirePackage{graphicx,xcolor} %
 \RequirePackage{epstopdf} %
 \RequirePackage{fancybox}

patacrep/songs/chordpro/__init__.py

@@ -182,6 +182,7 @@ def _filters(self):
         parent = super()._filters()
         parent.update({
             'lang2babel': self.lang2babel,
+            'render_size': self._render_size,
             })
         return parent
 
@@ -203,6 +204,13 @@ def lang2babel(self, lang):
             self.errors.append(new_error)
             return error.babel
 
+    @staticmethod
+    def _render_size(size):
+        items = []
+        for name, value, unit in size:
+            items.append(name + "=" + value + unit)
+        return ", ".join(items)
+
 class Chordpro2ChordproSong(ChordproSong):
     """Render chordpro song to chordpro code"""
 
@@ -219,10 +227,25 @@ class Chordpro2ChordproSong(ChordproSong):
         '\\': '\\\\',
     }
 
+    def _filters(self):
+        parent = super()._filters()
+        parent.update({
+            'render_size': self._render_size,
+            })
+        return parent
+
     def search_file(self, filename, extensions=None, *, datadirs=None):
         # pylint: disable=unused-variable
         return filename
 
+    @staticmethod
+    def _render_size(size):
+        items = []
+        for name, value, unit in size:
+            items.append(name + "=" + value + unit)
+        return " ".join(items)
+
+
 SONG_RENDERERS = {
     "tsg": {
         'csg': Chordpro2LatexSong,

patacrep/songs/chordpro/ast.py

@@ -405,6 +405,22 @@ def pretty_key(self):
     def __str__(self):
         return None
 
+class Image(Directive):
+    """An image
+
+    .. attribute:: filename
+        The filename of the image.
+    .. attribute:: size
+        An iterable of tuples ``(type, float, unit)``.
+    """
+
+    def __init__(self, filename, size=None):
+        self.filename = filename
+        if size is None:
+            size = []
+        self.size = size
+        super().__init__("image", None)
+
 class Tab(AST):
     """Tablature"""
 

patacrep/songs/chordpro/syntax.py

@@ -2,6 +2,7 @@
 
 import logging
 import re
+import shlex
 
 import ply.yacc as yacc
 
@@ -124,10 +125,67 @@ def _parse_define(groups):
             fingers=fingers,
             )
 
+    def _iter_raw_image_size_arguments(self, arguments, *, lineno):
+        for item in arguments:
+            prefix, _, suffix = item.partition("=")
+            if prefix in ['width', 'height']:
+                match = re.compile(
+                    r"^(?P<value>(\d*\.\d+|\d+))(?P<unit>cm|em|pt)$",
+                    re.VERBOSE,
+                    ).match(suffix)
+                if match is not None:
+                    yield (prefix, match.groupdict()['value'], match.groupdict()['unit'])
+                    continue
+            elif prefix in ['scale']:
+                match = re.compile(
+                    r"^(?P<value>(\d*\.\d+|\d+))$",
+                    re.VERBOSE,
+                    ).match(suffix)
+                if match is not None:
+                    yield (prefix, match.groupdict()['value'], "")
+                    continue
+            else:
+                self.error(
+                    line=lineno,
+                    message="Image: Unknown argument name '{}'.".format(prefix),
+                )
+                continue
+            self.error(
+                line=lineno,
+                message="Image: Unsupported {} value: '{}'.".format(prefix, suffix),
+            )
+
+    def _iter_image_size_arguments(self, argument, *, lineno):
+        arguments = set()
+        length_names = frozenset(["width", "height"])
+        for name, value, unit in self._iter_raw_image_size_arguments(argument, lineno=lineno):
+            if name in arguments:
+                self.error(
+                    line=lineno,
+                    message="Image: Ignoring repeated argument: {}.".format(name),
+                    )
+                continue
+            if (
+                    name == "scale" and not length_names.isdisjoint(arguments)
+                ) or (
+                    name in length_names and "scale" in arguments
+                ):
+                self.error(
+                    line=lineno,
+                    message=(
+                        "Image: Ignoring '{}' argument: Cannot mix scale and "
+                        "width or height argument."
+                        ).format(name),
+                    )
+                continue
+            arguments.add(name)
+            yield name, value, unit
+
     def p_directive(self, symbols):
         """directive : LBRACE KEYWORD directive_next RBRACE
                      | LBRACE SPACE KEYWORD directive_next RBRACE
         """
+        # pylint: disable=too-many-branches
         if len(symbols) == 5:
             keyword = symbols[2]
             argument = symbols[3]
@@ -171,7 +229,21 @@ def p_directive(self, symbols):
                 symbols[0] = ast.Error()
                 return
             self._directives.append(define)
-
+        elif keyword == "image":
+            splitted = shlex.split(argument)
+            if len(splitted) < 1:
+                self.error(
+                    line=symbols.lexer.lineno,
+                    message="Missing filename for image directive",
+                    )
+                symbols[0] = ast.Error()
+            else:
+                symbols[0] = ast.Image(
+                    splitted[0],
+                    list(
+                        self._iter_image_size_arguments(splitted[1:], lineno=symbols.lexer.lineno)
+                        ),
+                    )
         else:
             directive = ast.Directive(keyword, argument)
             if directive.inline:

test/test_book/datadir.tex.control

@@ -111,7 +111,7 @@ Chordpro}[
 
 
 \lilypond{scores/datadir.ly}
-\image{img/datadir.png}
+\image[]{img/datadir.png}
 
 
 \endsong
@@ -138,7 +138,7 @@ Chordpro}[
 
 
 \lilypond{scores/datadir2.ly}
-\image{img/datadir2.png}
+\image[]{img/datadir2.png}
 
 
 \endsong
@@ -165,7 +165,7 @@ Chordpro}[
 
 
 \lilypond{@TEST_FOLDER@/datadir_datadir/songs/./relative.ly}
-\image{@TEST_FOLDER@/datadir_datadir/songs/./relative.png}
+\image[]{@TEST_FOLDER@/datadir_datadir/songs/./relative.png}
 
 
 \endsong
@@ -192,7 +192,7 @@ Chordpro}[
 
 
 \lilypond{@TEST_FOLDER@/datadir_datadir/songs/./subdir/subdir.ly}
-\image{@TEST_FOLDER@/datadir_datadir/songs/./subdir/subdir.png}
+\image[]{@TEST_FOLDER@/datadir_datadir/songs/./subdir/subdir.png}
 
 
 \endsong

test/test_book/syntax.tex.control

@@ -2,8 +2,6 @@
 
 
 
-
-
 %% Automatically generated document.
 %% You may edit this file but all changes will be overwritten.
 %% If you want to change this document, have a look at
@@ -91,6 +89,69 @@ guitar,
 \addcontentsline{toc}{section}{\songlistname}
 
 \begin{songs}{titleidx,authidx}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% songs/./images.csg
+
+\selectlanguage{english}
+
+\beginsong{}[
+  by={
+  },
+]
+
+
+\image[]{img/image.png}
+\image[]{img/image with spaces.png}
+
+
+
+\image[scale=2]{img/image.png}
+\image[scale=.20]{img/image with spaces.png}
+\image[scale=1.2]{img/image.png}
+
+
+
+\image[width=2cm]{img/image.png}
+\image[height=2cm]{img/image with spaces.png}
+\image[width=2cm, height=1cm]{img/image.png}
+
+
+
+\image[width=2em]{img/image.png}
+\image[height=2em]{img/image with spaces.png}
+\image[width=2em, height=1em]{img/image.png}
+
+
+
+\image[width=50pt]{img/image.png}
+\image[height=50pt]{img/image with spaces.png}
+\image[width=50pt, height=100pt]{img/image.png}
+
+
+
+\image[width=2.5cm]{img/image.png}
+\image[height=2.5cm]{img/image with spaces.png}
+\image[width=2.5cm, height=1.5cm]{img/image.png}
+
+
+
+\image[width=3cm, height=10pt]{img/image.png}
+\image[width=10pt, height=3cm]{img/image with spaces.png}
+
+
+
+\image[]{img/image.png}
+\image[]{img/image.png}
+\image[]{img/image with spaces.png}
+\image[]{img/image with spaces.png}
+\image[]{img/image.png}
+\image[width=2cm]{img/image.png}
+\image[width=2cm]{img/image.png}
+\image[width=2cm]{img/image.png}
+
+
+\endsong
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% songs/./musicnote.csg
 
@@ -117,4 +178,4 @@ guitar,
 
 
 
-\end{document}
+\end{document}

test/test_book/syntax_datadir/songs/images.csg

@@ -0,0 +1,35 @@
+{image: image.png}
+{image: "image with spaces.png"}
+
+{image: image.png scale=2     }
+{image: "image with spaces.png"    scale=.20}
+{image:        image.png scale=1.2}
+
+{image: image.png width=2cm}
+{image: "image with spaces.png" height=2cm}
+{image: image.png width=2cm height=1cm}
+
+{image: image.png width=2em}
+{image: "image with spaces.png" height=2em}
+{image: image.png width=2em height=1em}
+
+{image: image.png width=50pt}
+{image: "image with spaces.png" height=50pt}
+{image: image.png width=50pt height=100pt}
+
+{image: image.png width=2.5cm}
+{image: "image with spaces.png" height=2.5cm}
+{image: image.png width=2.5cm height=1.5cm}
+
+{image: image.png width=3cm height=10pt}
+{image: "image with spaces.png" width=10pt height=3cm}
+
+{image: image.png width= height=}
+{image: image.png error=foo}
+{image: "image with spaces.png" not_a_size}
+{image: "image with spaces.png" too many arguments}
+{image: image.png width=2ex height=3km}
+{image: image.png width=2cm width=3cm}
+{image: image.png width=2cm scale=3cm}
+{image: image.png width=2cm scale=3}
+{image: }

test/test_song/image.csg

@@ -0,0 +1,44 @@
+{lang: en}
+
+{image: "image.png" }
+{image: "image with spaces.png" }
+
+
+{image: "image.png" scale=2}
+{image: "image with spaces.png" scale=.20}
+{image: "image.png" scale=1.2}
+
+
+{image: "image.png" width=2cm}
+{image: "image with spaces.png" height=2cm}
+{image: "image.png" width=2cm height=1cm}
+
+
+{image: "image.png" width=2em}
+{image: "image with spaces.png" height=2em}
+{image: "image.png" width=2em height=1em}
+
+
+{image: "image.png" width=50pt}
+{image: "image with spaces.png" height=50pt}
+{image: "image.png" width=50pt height=100pt}
+
+
+{image: "image.png" width=2.5cm}
+{image: "image with spaces.png" height=2.5cm}
+{image: "image.png" width=2.5cm height=1.5cm}
+
+
+{image: "image.png" width=3cm height=10pt}
+{image: "image with spaces.png" width=10pt height=3cm}
+
+
+{image: "image.png" }
+{image: "image.png" }
+{image: "image with spaces.png" }
+{image: "image with spaces.png" }
+{image: "image.png" }
+{image: "image.png" width=2cm}
+{image: "image.png" width=2cm}
+{image: "image.png" width=2cm}
+