From 232d518763046ff1b1c3243784caf0c7e821bcef Mon Sep 17 00:00:00 2001
From: Florian Forster <octo@leeloo.lan.home.verplant.org>
Date: Tue, 27 Mar 2007 17:23:51 +0200
Subject: [PATCH] common.[ch]: Provide a function `format_name' to turn a
 value-list into its string representation.

---
 src/common.c | 41 +++++++++++++++++++++++++++++++++++++++--
 src/common.h |  8 ++++++++
 2 files changed, 47 insertions(+), 2 deletions(-)

diff --git a/src/common.c b/src/common.c
index 967a82af..6521a58b 100644
--- a/src/common.c
+++ b/src/common.c
@@ -500,7 +500,7 @@ unsigned long long ntohll (unsigned long long n)
 #else
 	return (((unsigned long long) ntohl (n)) << 32) + ntohl (n >> 32);
 #endif
-}
+} /* unsigned long long ntohll */
 
 unsigned long long htonll (unsigned long long n)
 {
@@ -509,4 +509,41 @@ unsigned long long htonll (unsigned long long n)
 #else
 	return (((unsigned long long) htonl (n)) << 32) + htonl (n >> 32);
 #endif
-}
+} /* unsigned long long htonll */
+
+int format_name (char *ret, int ret_len,
+		const char *hostname,
+		const char *plugin, const char *plugin_instance,
+		const char *type, const char *type_instance)
+{
+	int  status;
+
+	assert (plugin != NULL);
+	assert (type != NULL);
+
+	if ((plugin_instance == NULL) || (strlen (plugin_instance) == 0))
+	{
+		if ((type_instance == NULL) || (strlen (type_instance) == 0))
+			status = snprintf (ret, ret_len, "%s/%s/%s",
+					hostname, plugin, type);
+		else
+			status = snprintf (ret, ret_len, "%s/%s/%s-%s",
+					hostname, plugin, type,
+					type_instance);
+	}
+	else
+	{
+		if ((type_instance == NULL) || (strlen (type_instance) == 0))
+			status = snprintf (ret, ret_len, "%s/%s-%s/%s",
+					hostname, plugin, plugin_instance,
+					type);
+		else
+			status = snprintf (ret, ret_len, "%s/%s-%s/%s-%s",
+					hostname, plugin, plugin_instance,
+					type, type_instance);
+	}
+
+	if ((status < 1) || (status >= ret_len))
+		return (-1);
+	return (0);
+} /* int format_name */
diff --git a/src/common.h b/src/common.h
index 310aa8a5..6c097f6c 100644
--- a/src/common.h
+++ b/src/common.h
@@ -156,4 +156,12 @@ long long get_kstat_value (kstat_t *ksp, char *name);
 unsigned long long ntohll (unsigned long long n);
 unsigned long long htonll (unsigned long long n);
 
+int format_name (char *ret, int ret_len,
+		const char *hostname,
+		const char *plugin, const char *plugin_instance,
+		const char *type, const char *type_instance);
+#define FORMAT_VL(ret, ret_len, vl, ds) \
+	format_name (ret, ret_len, (vl)->host, (vl)->plugin, (vl)->plugin_instance, \
+			(ds)->type, (vl)->type_instance)
+
 #endif /* COMMON_H */
-- 
2.11.0