[core] Added stream related generic list operations;

include/sxmp/sxmp.h

@@ -201,6 +201,10 @@ struct sxstream_opened {
   uint16_t pin_channelid;
 };
 
+#define sxstream_opened_setpriv(n, p)   (n)->priv = (p)
+#define sxstream_opened_getpriv(n)      (n)->priv
+#define sxstream_opened_getelist(n)     (n)->ent_buf
+
 struct sxstream_ops {
   int (*s_open)(sxlink_t *, struct sxstream_opened *, const char *);
   int (*s_close)(struct sxstream_opened *);
@@ -414,6 +418,11 @@ int sxmp_rpclist_add_function(usrtc_t *tree, int type, const char *fu_name,
 
 int sxmp_rpclist_filter(usrtc_t *source, usrtc_t **dest, int flag, int *filter);
 
+  /* generic sxstream list functions */
+  list_head_t *sxstream_generic_slist_alloc(void);
+  void sxstream_generic_slist_free(list_head_t *list);
+  int sxstream_generic_slist_additem(list_head_t *list, const char *value);
+
 #ifdef __cplusplus
 }
 #endif

lib/Makefile.am

@@ -15,7 +15,7 @@ lib_LTLIBRARIES = libsxmp.la
 
 libsxmp_la_SOURCES = \
 	sxmplv2.c hub.c channel.c message.c rpc.c \
-	uuid.c stream.c error.c
+	uuid.c stream_generic_listops.c stream.c error.c
 
 libsxmp_la_LDFLAGS = 
 

lib/stream_generic_listops.c

@@ -0,0 +1,89 @@
+/*
+ * Secure X Message Passing Library v2 implementation.
+ * (sxmplv2) it superseed all versions before due to the:
+ * - memory consumption
+ * - new features such as pulse emitting
+ * - performance optimization
+ *
+ * (c) Askele Group 2013-2015 <http://askele.com>
+ * (c) Alexander Vdolainen 2013-2015,2016 <avdolainen@zoho.com>
+ *
+ * libsxmp is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * libsxmp is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.";
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <pthread.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <fcntl.h>
+
+#include <tdata/usrtc.h>
+#include <tdata/list.h>
+#include <sexpr/sexp.h>
+
+#include <sxmp/sxmp.h>
+
+list_head_t *sxstream_generic_slist_alloc(void)
+{
+  list_head_t *list = malloc(sizeof(list_head_t));
+
+  if(list) list_init_head(list);
+
+  return list;
+}
+
+void sxstream_generic_slist_free(list_head_t *list)
+{
+  struct _nn_stream_entry_node *entry;
+  list_node_t *iter, *siter;
+
+  list_for_each_safe(list, iter, siter) {
+    entry = list_entry(iter, struct _nn_stream_entry_node, node);
+    list_del(iter);
+    free(entry->value);
+    free(entry);
+  }
+
+  free(list);
+
+  return;
+}
+
+int sxstream_generic_slist_additem(list_head_t *list, const char *value)
+{
+  struct _nn_stream_entry_node *entry = malloc(sizeof(struct _nn_stream_entry_node));
+  size_t value_len = 0;
+
+  if(!entry) return -1;
+  if(!value) {
+  __enomem:
+    free(entry);
+    return -1;
+  } else value_len = strlen(value) + 3*sizeof(char); /* additional nil and two underscopes */
+
+  if(!(entry->value = malloc(value_len)))
+    goto __enomem;
+  else snprintf(entry->value, value_len, "\"%s\"", value);
+
+  list_init_node(&entry->node);
+  list_add2tail(list, &entry->node);
+
+  return 0;
+}
+