From 4f8d4b95cd14085fced4e2d31d06d1c37342e39a Mon Sep 17 00:00:00 2001
From: David Yat Sin <dyatsin@sangoma.com>
Date: Tue, 22 Feb 2011 11:13:44 -0500
Subject: [PATCH] added ftdm_variables.c
---
libs/freetdm/src/ftdm_variables.c | 127 ++++++++++++++++++++++++++++++
1 file changed, 127 insertions(+)
create mode 100644 libs/freetdm/src/ftdm_variables.c
diff --git a/libs/freetdm/src/ftdm_variables.c b/libs/freetdm/src/ftdm_variables.c
new file mode 100644
index 0000000000..706970247b
--- /dev/null
+++ b/libs/freetdm/src/ftdm_variables.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2010, Sangoma Technologies
+ * David Yat Sin <dyatsin@sangoma.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Contributors:
+ *
+ * Moises Silva <moy@sangoma.com>
+ *
+ */
+
+#include "private/ftdm_core.h"
+
+FT_DECLARE(ftdm_status_t) ftdm_event_add_var(ftdm_sigmsg_t *sigmsg, const char *var_name, const char *value)
+{
+ char *t_name = 0, *t_val = 0;
+
+ if (!sigmsg || !var_name || !value) {
+ return FTDM_FAIL;
+ }
+
+ if (!sigmsg->variables) {
+ /* initialize on first use */
+ sigmsg->variables = create_hashtable(16, ftdm_hash_hashfromstring, ftdm_hash_equalkeys);
+ ftdm_assert_return(sigmsg->variables, FTDM_FAIL, "Failed to create hash table\n");
+ }
+
+ t_name = ftdm_strdup(var_name);
+ t_val = ftdm_strdup(value);
+ hashtable_insert(sigmsg->variables, t_name, t_val, HASHTABLE_FLAG_FREE_KEY | HASHTABLE_FLAG_FREE_VALUE);
+ return FTDM_SUCCESS;
+}
+
+FT_DECLARE(ftdm_status_t) ftdm_event_remove_var(ftdm_sigmsg_t *sigmsg, const char *var_name)
+{
+ if (sigmsg && sigmsg->variables) {
+ hashtable_remove(sigmsg->variables, (void *)var_name);
+ }
+ return FTDM_SUCCESS;
+}
+
+FT_DECLARE(const char *) ftdm_event_get_var(ftdm_sigmsg_t *sigmsg, const char *var_name)
+{
+ const char *var = NULL;
+
+ if (!sigmsg || !sigmsg->variables || !var_name) {
+ return NULL;
+ }
+
+ var = (const char *)hashtable_search(((struct hashtable*)sigmsg->variables), (void *)var_name);
+ return var;
+}
+
+FT_DECLARE(ftdm_iterator_t *) ftdm_event_get_var_iterator(const ftdm_sigmsg_t *sigmsg, ftdm_iterator_t *iter)
+{
+ ftdm_hash_iterator_t *hashiter = NULL;
+ if (!sigmsg) {
+ return NULL;
+ }
+
+ hashiter = sigmsg->variables == NULL ? NULL : hashtable_first(sigmsg->variables);
+
+ if (hashiter == NULL) {
+ return NULL;
+ }
+
+ if (!(iter = get_iterator(FTDM_ITERATOR_VARS, iter))) {
+ return NULL;
+ }
+ iter->pvt.hashiter = hashiter;
+ return iter;
+}
+
+FT_DECLARE(ftdm_status_t) ftdm_event_get_current_var(ftdm_iterator_t *iter, const char **var_name, const char **var_val)
+{
+ const void *key = NULL;
+ void *val = NULL;
+
+ *var_name = NULL;
+ *var_val = NULL;
+
+ ftdm_assert_return(iter && (iter->type == FTDM_ITERATOR_VARS) && iter->pvt.hashiter, FTDM_FAIL, "Cannot get variable from invalid iterator!\n");
+
+ hashtable_this(iter->pvt.hashiter, &key, NULL, &val);
+
+ *var_name = key;
+ *var_val = val;
+
+ return FTDM_SUCCESS;
+}
+
+FT_DECLARE(ftdm_status_t) ftdm_event_clear_vars(ftdm_sigmsg_t *sigmsg)
+{
+ if (sigmsg->variables) {
+ hashtable_destroy(sigmsg->variables);
+ sigmsg->variables = NULL;
+ }
+ return FTDM_SUCCESS;
+}