Initial non-working version

__init__.py

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+from finder import *

finder.py

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+from zim.plugins import PluginClass
+from zim.command import Command
+from zim.notebook import resolve_notebook, build_notebook
+
+usagehelp ='''\
+usage: zim --plugin linklist [OPTIONS] [Notebook]
+
+--help, -h      Print this help
+--page, -p      Check links only on the given page
+'''
+class LinkFinderPlugin(PluginClass):
+    plugin_info = {
+        'name': 'Multi-link finder',
+        'description': '''\
+List pages that link to another page more than once.
+        ''',
+        'author': 'Gergely Polonkai',
+    }
+
+class LinkFinderCommand(Command):
+    options = (
+        ('help',          'h', 'Print this help text and exit'),
+    )
+
+    def parse_options(self, *args):
+        Command.parse_options(self, *args)
+
+    def _all_links(self):
+        for page in self.nb.index.walk():
+            yield page
+
+    def run(self):
+        if self.opts.get('help'):
+            print usagehelp
+
+            return
+
+        if len(self.args) == 0:
+            # TODO: find and open the default notebook
+            notebook, ns = build_notebook(nb)
+            print(notebook)
+        else:
+            nbi = resolve_notebook(self.args[0])
+            notebook, ns = build_notebook(nbi)
+
+        self.process_subpages(notebook, None)
+
+    def process_subpages(self, notebook, path):
+        for page in notebook.get_pagelist(path):
+            _links = {}
+
+            for linktype, destination, attrs in page.get_links():
+                if linktype == 'page':
+                    path = notebook.resolve_path(destination,
+                                                 source=page,
+                                                 index=notebook.index)
+                    if path.name in _links:
+                        _links[path.name] += 1
+                    else:
+                        _links[path.name] = 1
+
+
+            for page_name, count in _links.items():
+                if count > 1:
+                    print("{} is linked {} times from {}".format(
+                        page_name, count, page.name))
+
+            # Process subpages of this one
+            self.process_subpages(notebook, page)