[evolution-data-server] Add imapx_lookup_capability().

[Matthew Barnes <mbarnes src gnome org>]

commit 7887e4533ec53deed8d9eabbbfd132f0b865d932
Author: Matthew Barnes <mbarnes redhat com>
Date:   Wed Aug 29 13:05:07 2012 -0400

    Add imapx_lookup_capability().
    
    Just a thread-safe lookup function for the capabilities hash table.

 camel/camel-imapx-utils.c |   26 +++++++++++++++++---------
 camel/camel-imapx-utils.h |    1 +
 2 files changed, 18 insertions(+), 9 deletions(-)
---
diff --git a/camel/camel-imapx-utils.c b/camel/camel-imapx-utils.c
index a1e2782..2efadcc 100644
--- a/camel/camel-imapx-utils.c
+++ b/camel/camel-imapx-utils.c
@@ -408,7 +408,6 @@ imapx_parse_capability (CamelIMAPXStream *stream,
 	gint tok;
 	guint len;
 	guchar *token, *p, c;
-	gpointer pp = NULL;
 	gboolean free_token = FALSE;
 	struct _capability_info * cinfo;
 	GError *local_error = NULL;
@@ -440,14 +439,7 @@ imapx_parse_capability (CamelIMAPXStream *stream,
 				}
 			case IMAPX_TOK_INT:
 				d (stream->tagprefix, " cap: '%s'\n", token);
-				g_mutex_lock (&capa_htable_lock);
-				pp = g_hash_table_lookup (capa_htable,
-							  (gchar *) token);
-				g_mutex_unlock (&capa_htable_lock);
-				if (pp != NULL) {
-					guint32 capa_id = GPOINTER_TO_UINT (pp);
-					cinfo->capa |= capa_id;
-				}
+				cinfo->capa |= imapx_lookup_capability ((gchar *) token);
 				if (free_token) {
 					g_free (token);
 					token = NULL;
@@ -523,6 +515,22 @@ imapx_register_capability (const gchar *capability)
 	return capa_id;
 }
 
+guint32
+imapx_lookup_capability (const gchar *capability)
+{
+	gpointer data;
+
+	g_return_val_if_fail (capability != NULL, 0);
+
+	g_mutex_lock (&capa_htable_lock);
+
+	data = g_hash_table_lookup (capa_htable, capability);
+
+	g_mutex_unlock (&capa_htable_lock);
+
+	return GPOINTER_TO_UINT (data);
+}
+
 struct _CamelIMAPXNamespaceList *
 imapx_parse_namespace_list (CamelIMAPXStream *stream,
                             GCancellable *cancellable,
diff --git a/camel/camel-imapx-utils.h b/camel/camel-imapx-utils.h
index b777065..afe018d 100644
--- a/camel/camel-imapx-utils.h
+++ b/camel/camel-imapx-utils.h
@@ -136,6 +136,7 @@ struct _capability_info {
 struct _capability_info *imapx_parse_capability (struct _CamelIMAPXStream *stream, GCancellable *cancellable, GError **error);
 void imapx_free_capability (struct _capability_info *);
 guint32 imapx_register_capability (const gchar *capability);
+guint32 imapx_lookup_capability (const gchar *capability);
 
 gboolean imapx_parse_param_list (struct _CamelIMAPXStream *is, struct _camel_header_param **plist, GCancellable *cancellable, GError **error) /* IO,PARSE */;
 struct _CamelContentDisposition *imapx_parse_ext_optional (struct _CamelIMAPXStream *is, GCancellable *cancellable, GError **error) /* IO,PARSE */;