From ccf1630f39874e22a589e809c491536b5ded1064 Mon Sep 17 00:00:00 2001
From: Julian Bouzas <julian.bouzas@collabora.com>
Date: Tue, 26 Jul 2022 16:02:02 -0400
Subject: [PATCH] main: add --version flag to show current version

Fixes #317
---
 lib/wp/wp.c | 20 ++++++++++++++++++++
 lib/wp/wp.h |  6 ++++++
 src/main.c  | 13 +++++++++++++
 3 files changed, 39 insertions(+)

diff --git a/lib/wp/wp.c b/lib/wp/wp.c
index 2175aae0..b13858d9 100644
--- a/lib/wp/wp.c
+++ b/lib/wp/wp.c
@@ -67,6 +67,26 @@ wp_init (WpInitFlags flags)
   g_type_ensure (WP_TYPE_FACTORY);
 }
 
+/*!
+ * \brief Gets the WirePlumber library version
+ * \returns WirePlumber library version
+ */
+const char *
+wp_get_library_version (void)
+{
+  return WIREPLUMBER_VERSION;
+}
+
+/*!
+ * \brief Gets the WirePlumber library API version
+ * \returns WirePlumber library API version
+ */
+const char *
+wp_get_library_api_version (void)
+{
+  return WIREPLUMBER_API_VERSION;
+}
+
 /*!
  * \brief Gets the WirePlumber module directory
  * \returns WirePlumber's module directory
diff --git a/lib/wp/wp.h b/lib/wp/wp.h
index fa09efa8..4e13391b 100644
--- a/lib/wp/wp.h
+++ b/lib/wp/wp.h
@@ -66,6 +66,12 @@ typedef enum {
 WP_API
 void wp_init (WpInitFlags flags);
 
+WP_API
+const char * wp_get_library_version (void);
+
+WP_API
+const char * wp_get_library_api_version (void);
+
 WP_API
 const gchar * wp_get_module_dir (void);
 
diff --git a/src/main.c b/src/main.c
index 8c791834..0e5f109b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -24,10 +24,13 @@ enum WpExitCode
   WP_EXIT_CONFIG = 78,      /* configuration error */
 };
 
+static gboolean show_version = FALSE;
 static gchar * config_file = NULL;
 
 static GOptionEntry entries[] =
 {
+  { "version", 'v', G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &show_version,
+    "Show version", NULL },
   { "config-file", 'c', G_OPTION_FLAG_NONE, G_OPTION_ARG_STRING, &config_file,
     "The context configuration file", NULL },
   { NULL }
@@ -427,6 +430,16 @@ main (gint argc, gchar **argv)
     return WP_EXIT_USAGE;
   }
 
+  if (show_version) {
+    g_print ("%s\n"
+        "Compiled with libwireplumber %s\n"
+        "Linked with libwireplumber %s\n",
+        argv[0],
+        WIREPLUMBER_VERSION,
+        wp_get_library_version());
+    return WP_EXIT_OK;
+  }
+
   if (!config_file)
     config_file = "wireplumber.conf";