[journald] add url handler

src/CMakeLists.txt

@@ -233,6 +233,7 @@ list(APPEND GEN_SRCS default-config.h default-config.cc)
 set(BUILTIN_LNAV_SCRIPTS
         scripts/dhclient-summary.lnav
         scripts/docker-url-handler.lnav
+        scripts/journald-url-handler.lnav
         scripts/lnav-pop-view.lnav
         scripts/partition-by-boot.lnav
         scripts/piper-url-handler.lnav

src/root-config.json

@@ -96,14 +96,17 @@
             "docker": {
                 "handler": "docker-url-handler"
             },
-            "podman": {
-                "handler": "docker-url-handler"
-            },
             "docker-compose": {
                 "handler": "docker-compose-url-handler"
             },
+            "journald": {
+                "handler": "journald-url-handler"
+            },
             "piper": {
                 "handler": "piper-url-handler"
+            },
+            "podman": {
+                "handler": "docker-url-handler"
             }
         }
     }

src/scripts/journald-url-handler.lnav

@@ -0,0 +1,32 @@
+#
+# @synopsis: journald-url-handler
+# @description: Internal script to handle opening journald URLs
+#
+
+;SELECT
+    jget(url, '/scheme') AS jscheme,
+    jget(url, '/host') AS jhost,
+    jget(url, '/parameters') as jparams
+    FROM (SELECT parse_url(
+              CASE WHEN regexp('^journald://(?:\?|$)', $1) THEN
+                  'journald://localhost/' || substr($1, 11)
+              END) AS url
+    )
+
+;SELECT
+    printf(':sh journalctl --output=json -f %s', (
+        SELECT group_concat(
+            CASE length(key)
+                WHEN 1 THEN
+                    '-'
+                ELSE
+                    '--'
+            END ||
+            key ||
+            '=' || value,
+            ' ')
+            FROM json_each($jparams)
+        )
+    ) AS cmds
+
+:eval ${cmds}

src/scripts/scripts.am

@@ -2,6 +2,7 @@
 BUILTIN_LNAVSCRIPTS = \
     $(srcdir)/scripts/dhclient-summary.lnav \
     $(srcdir)/scripts/docker-url-handler.lnav \
+    $(srcdir)/scripts/journald-url-handler.lnav \
     $(srcdir)/scripts/lnav-pop-view.lnav \
     $(srcdir)/scripts/partition-by-boot.lnav \
     $(srcdir)/scripts/piper-url-handler.lnav \