Fix anchor links

jandd/sphinxext/ip.py

@@ -62,12 +62,13 @@ class IPV4RangeDirective(IPRangeDirective):
     title_prefix = _("IPv4 range")
 
     def add_target_and_index(self, name: T, sig: str, signode: desc_signature) -> None:
-        signode["ids"].append("ip4_range" + "-" + sig)
+        anchor = "ip-ipv4range-{0}".format(sig)
+        signode["ids"].append(anchor)
         ips = self.env.get_domain("ip")
         ips.add_ip4_range(sig)
         idx_text = "{}; {}".format(self.title_prefix, name)
         self.indexnode["entries"] = [
-            ("single", idx_text, name, "", None),
+            ("single", idx_text, anchor, "", None),
         ]
 
 
@@ -75,12 +76,13 @@ class IPV6RangeDirective(IPRangeDirective):
     title_prefix = _("IPv6 range")
 
     def add_target_and_index(self, name: T, sig: str, signode: desc_signature) -> None:
-        signode["ids"].append("ip6_range" + "-" + sig)
+        anchor = "ip-ipv6range-{0}".format(sig)
+        signode["ids"].append(anchor)
         ips = self.env.get_domain("ip")
         ips.add_ip6_range(sig)
         idx_text = "{}; {}".format(self.title_prefix, name)
         self.indexnode["entries"] = [
-            ("single", idx_text, name, "", None),
+            ("single", idx_text, anchor, "", None),
         ]
 
 
@@ -121,7 +123,7 @@ class IPXRefRole(XRefRole):
         node_list, message = super().result_nodes(document, env, node, is_ref)
 
         ip = env.get_domain("ip")
-        if self.reftype in ["v4", "v6"] and self.target not in ip.data["ips"]:
+        if self.reftype in ["v4", "v6"] and self.target not in ip.data["ip_dict"]:
             return node_list, message
         if (
             self.reftype in ["v4range", "v6range"]
@@ -130,7 +132,11 @@ class IPXRefRole(XRefRole):
             return node_list, message
 
         index_node = addnodes.index()
-        target_id = "index-{}".format(env.new_serialno("index"))
+        target_id = "ip-{}-{}".format(self.reftype, env.new_serialno("index"))
+
+        if self.reftype in ["v4", "v6"]:
+            ip.add_ip_address_anchor(self.target, env.docname, target_id)
+
         target_node = nodes.target("", "", ids=[target_id])
         doc_title = next(d for d in document.traverse(nodes.title)).astext()
 
@@ -175,10 +181,9 @@ class IPDomain(Domain):
 
     initial_data = {
         "range_nodes": [],
-        "ip_refs": [],
+        "ip_refs": defaultdict(list),
         "range_refs": [],
         "ranges": defaultdict(list),
-        "ips": defaultdict(list),
         "ip_dict": {},
     }
 
@@ -218,23 +223,15 @@ class IPDomain(Domain):
         self._add_ip_address_reference("v6", ip_address)
 
     def _add_ip_address_reference(self, family, sig):
-        name = "ip{}.{}".format(family, sig)
-        anchor = "ip-ip{}-{}".format(family, sig)
+        try:
+            self.data["ip_dict"][sig] = IP(sig)
+        except ValueError as e:
+            logger.error("invalid ip address '%s': %s", sig, e)
+
+    def add_ip_address_anchor(self, sig, docname, anchor):
         try:
             ip = IP(sig)
-            self.data["ip_refs"].append(
-                (
-                    name,
-                    sig,
-                    "IP{}".format(family),
-                    str(ip),
-                    self.env.docname,
-                    anchor,
-                    0,
-                )
-            )
-            self.data["ips"][sig].append((ip, self.env.docname, anchor))
-            self.data["ip_dict"][sig] = ip
+            self.data["ip_refs"][sig].append((ip, docname, anchor))
         except ValueError as e:
             logger.error("invalid ip address '%s': %s", sig, e)
 
@@ -276,13 +273,25 @@ class IPDomain(Domain):
         contnode: nodes.Element,
     ) -> Optional[nodes.Element]:
         match = []
+
+        def address_tuple(docname, anchor, ip_range) -> Tuple[str, str, str]:
+            return (
+                docname,
+                anchor,
+                _(
+                    "IPv{0} range {1}".format(
+                        ip_range.version(), ip_range.to_compressed()
+                    )
+                ),
+            )
+
         if typ in ("v4", "v6"):
             # reference to IP range
             if target not in self.data["ip_dict"]:
                 # invalid ip address
                 raise NoUri(target)
             match = [
-                (docname, anchor)
+                address_tuple(docname, anchor, ip_range)
                 for ip_range, docname, anchor in [
                     r
                     for range_nodes in self.data["ranges"].values()
@@ -293,7 +302,7 @@ class IPDomain(Domain):
         elif typ in ("v4range", "v6range"):
             if target in self.data["ranges"]:
                 match = [
-                    (docname, anchor)
+                    address_tuple(docname, anchor, ip_range)
                     for ip_range, docname, anchor in [
                         range_nodes for range_nodes in self.data["ranges"][target]
                     ]
@@ -301,8 +310,9 @@ class IPDomain(Domain):
         if len(match) > 0:
             todocname = match[0][0]
             targ = match[0][1]
+            title = match[0][2]
 
-            return make_refnode(builder, fromdocname, todocname, targ, contnode, targ)
+            return make_refnode(builder, fromdocname, todocname, targ, contnode, title)
         else:
             logger.error("found no link target for %s", target)
         return None
@@ -319,7 +329,7 @@ def process_ip_nodes(app, doctree, fromdocname):
         content = []
         net = Network(node["range_spec"])
         addresses = defaultdict(list)
-        for ip_address_sig, refs in ips.data["ips"].items():
+        for ip_address_sig, refs in ips.data["ip_refs"].items():
             for ip_address, todocname, anchor in refs:
                 if ip_address in net:
                     addresses[ip_address_sig].append((ip_address, todocname, anchor))