1 files changed, 81 insertions, 0 deletions
diff --git a/common.c b/common.c
new file mode 100644
index 0000000..3bf7dd1
--- /dev/null
+++ b/common.c
@@ -0,0 +1,81 @@
+/************************************************************************
+ * This file is part of trayfreq-archlinux.                             *
+ *                                                                      *
+ * trayfreq-archlinux is free software; you can redistribute it and/or  *
+ * modify it under the terms of the GNU General Public License as       *
+ * published by the Free Software Foundation; either version 3 of the   *
+ * License, or (at your option) any later version.                      *
+ *                                                                      *
+ * trayfreq-archlinux 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 General Public License for more details.                         *
+ *                                                                      *
+ * You should have received a copy of the GNU General Public License    *
+ * along with trayfreq-archlinux. If not, see                           *
+ * <http://www.gnu.org/licenses/>.                                      *
+ ************************************************************************/
+
+#include "common.h"
+
+#include <stdio.h> /* fopen, fgets, printf */
+#include <stdlib.h> /* atoi */
+#include <string.h> /* lots of functions */
+
+/***********************************************************************
+ * Return integer value from first line in file
+ **********************************************************************/
+int get_int_value_from_file(const char* filename)
+{
+	FILE* fd;
+	char buffer[512];
+	int value;
+
+	if(!(fd = fopen(filename, "r")))
+		return -1;
+
+	if (fgets(buffer, sizeof(buffer), fd))
+		value = get_int(buffer);
+
+	fclose(fd);
+	return value;
+}
+
+
+/***********************************************************************
+ * Return true/false if a file has specified line of text
+ **********************************************************************/
+bool file_has_line(const char *filename, const char *line)
+{
+	FILE* fd;
+	char buffer[512];
+
+	if (!(fd = fopen(filename, "r")))
+		return false;
+
+	while (fgets(buffer, sizeof(buffer), fd) != NULL)
+	{
+		if(strstr(buffer, line) != NULL)
+		{
+			fclose(fd);
+			return true;
+		}
+	}
+	fclose(fd);
+	return false;
+}
+
+
+/***********************************************************************
+ * Fetches first number (ie the 35 of "35 123") from a
+ * string
+ **********************************************************************/
+int get_int(const char* string)
+{
+	char* first_num;
+
+	first_num = strpbrk(string, "0123456789");
+	debug("first_num: '%s'\n",first_num);
+
+	return atoi(first_num);
+}