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-rw-r--r--common.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/common.c b/common.c
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+++ b/common.c
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+/************************************************************************
+ * 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);
+}