added proper link resolution

src/dragonglass/dragonglass.py

@@ -3,7 +3,7 @@
 import argparse
 import sys
 from pathlib import Path
-from tree import SourceNode
+from tree import SourceNode, SourceIndex
 from mparse import create_markdown_parser
 
 # The command line parser
@@ -29,7 +29,9 @@ def main():
     for node in nodes:
         node.load_metadata(source_dir)
 
-    mdparse = create_markdown_parser()
+    src_index = SourceIndex(nodes)
+
+    mdparse = create_markdown_parser(src_index)
     for node in nodes:
         node.parse_markdown(source_dir, mdparse)
 

src/dragonglass/mparse.py

@@ -23,10 +23,14 @@ class MetaStripper(Extension):
 
 
 class ObsidianLinks(Extension):
+    def __init__(self, src_index, **kwargs):
+        super(ObsidianLinks, self).__init__(**kwargs)
+        self._src_index = src_index
 
     class ObsidianLinksProc(InlineProcessor):
-        def __init__(self, pattern, md):
+        def __init__(self, pattern, md, src_index):
             super(ObsidianLinks.ObsidianLinksProc, self).__init__(pattern, md)
+            self._src_index = src_index
 
         def parse_reference(self, contents):
             text = None
@@ -34,12 +38,21 @@ class ObsidianLinks(Extension):
             if len(t) > 1:
                 text = t[1]
                 contents = t[0]
+
+            node, linktype = self._src_index.lookup(contents)
             if not text:
                 text = contents
-            return contents, text
+            if node:
+                return node.link_target, text
+            return None, text
 
         def handleMatch(self, m, data):
             link, text = self.parse_reference(m.group(0)[2:-2])
+            if link is None:
+                el = etree.Element('span')
+                el.set('class', 'invalid-reference')
+                el.text = text
+            else:
                 el = etree.Element('a')
                 el.set('href', link)
                 el.text = text
@@ -47,18 +60,15 @@ class ObsidianLinks(Extension):
 
     def extendMarkdown(self, md):
         OBSLINK_PATTERN = r'\[\[(.*?)\]\]'
-        md.inlinePatterns.register(ObsidianLinks.ObsidianLinksProc(OBSLINK_PATTERN, md), 'obsidian_links', 0)
+        md.inlinePatterns.register(ObsidianLinks.ObsidianLinksProc(OBSLINK_PATTERN, md, self._src_index),
+                                   'obsidian_links', 0)
 
 
-class Strikeout(Extension):
+class ObsidianInlines(Extension):
     def extendMarkdown(self, md):
         md.inlinePatterns.register(SimpleTagInlineProcessor(r'()~~(.*?)~~', 'del'), 'strikeout', 0)
-
-
-class Highlight(Extension):
-    def extendMarkdown(self, md):
         md.inlinePatterns.register(SimpleTagInlineProcessor(r'()\=\=(.*?)\=\=', 'ins'), 'highlight', 0)
 
 
-def create_markdown_parser():
-    return markdown.Markdown(extensions=[MetaStripper(), ObsidianLinks(), Strikeout(), Highlight()])
+def create_markdown_parser(src_index):
+    return markdown.Markdown(extensions=[MetaStripper(), ObsidianLinks(src_index), ObsidianInlines()])

src/dragonglass/tree.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 
+from urllib.parse import quote as urlquote
 import yaml
 
 # The paths that are always to be ignored.
@@ -21,6 +22,11 @@ class SourceNode:
     def __str__(self):
         return f"SourceNode({self._path}, {self._is_dir}) [is_md={self._is_md}]"
 
+    @property
+    def link_target(self):
+        xpath = self._path.with_suffix('.html') if self._is_md else self._path
+        return urlquote(xpath.as_posix())
+
     @classmethod
     def generate_list(cls, source_root):
         nodes = []
@@ -43,10 +49,8 @@ class SourceNode:
     def load_metadata(self, source_dir):
         if self._is_md:
             with open(source_dir / self._path, "r", encoding="utf-8") as f:
-                print(">>>opened")
                 l = f.readline()
                 if l == '---\n':
-                    print(">>>startmd")
                     metalines = []
                     l = f.readline()
                     while l != '---\n':
@@ -59,3 +63,37 @@ class SourceNode:
             markdown_parser.reset()
             with open(source_dir / self._path, "r", encoding="utf-8") as f:
                 self.text = markdown_parser.convert(f.read())
+
+
+class SourceIndex:
+    def __init__(self, nodelist):
+        self._byname = {}
+        self._byalias = {}
+        for node in nodelist:
+            if node._is_dir:
+                continue
+            if node._is_md:
+                tmp = node._path.with_suffix('')
+                key = tmp.name
+                if key not in self._byname:
+                    self._byname[key] = node
+                self._byname[tmp.as_posix()] = node
+                if node.metadata:
+                    aliases = node.metadata.get('aliases', [])
+                    if isinstance(aliases, list):
+                        for alias in aliases:
+                            if alias not in self._byalias:
+                                self._byalias[alias] = node
+            else:
+                key = self._path.name
+                if key not in self._byname:
+                    self._byname[key] = node
+                self._byname[self._path.as_posix()] = node
+
+    def lookup(self, reference):
+        if reference in self._byname:
+            return self._byname[reference], 'NAME'
+        elif reference in self._byalias:
+            return self._byalias[reference], 'ALIAS'
+        else:
+            return None, None