ustctl cli rewrite

[ust.git] / ustctl / scanning_functions.c

diff --git a/ustctl/scanning_functions.c b/ustctl/scanning_functions.c
new file mode 100644 (file)
index 0000000..0cf809e
--- /dev/null
+++ b/ustctl/scanning_functions.c
@@ -0,0 +1,84 @@
+/* Copyright (C) 2011  Ericsson AB, Nils Carlson <nils.carlson@ericsson.com>
+ *
+ * This library 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 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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 library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <ust/ustcmd.h>
+#include "usterr.h"
+
+
+pid_t parse_pid(const char *pid_string)
+{
+       pid_t pid;
+
+       errno = 0;
+       pid = strtoull(pid_string, NULL, 10);
+       if (errno) {
+               perror("Failed to parse pid");
+               exit(EXIT_FAILURE);
+       }
+
+       return pid;
+}
+
+int scan_ch_marker(const char *channel_marker, char **channel, char **marker)
+{
+       int result;
+
+       *channel = NULL;
+       *marker = NULL;
+
+       result = sscanf(channel_marker, "%a[^/]/%as", channel, marker);
+       if (result != 2) {
+               if (errno) {
+                       PERROR("Failed to read channel and marker names");
+               } else {
+                       ERR("Failed to parse marker and channel names");
+               }
+               if (*channel) {
+                       free(*channel);
+               }
+               if (*marker) {
+                       free(*marker);
+               }
+               return -1;
+       }
+
+       return 0;
+}
+
+int scan_ch_and_num(const char *ch_num, char **channel, unsigned int *num)
+{
+       int result;
+
+       *channel = NULL;
+
+       result = sscanf(ch_num, "%a[^/]/%u", channel, num);
+       if (result != 2) {
+               if (errno) {
+                       PERROR("Failed to parse channel and number");
+               } else {
+                       ERR("Failed to parse channel and number");
+               }
+               if (*channel) {
+                       free(*channel);
+               }
+               return -1;
+       }
+
+       return 0;
+}