Add options to write to a log and be quiet.

setter/src/log.c

@@ -0,0 +1,110 @@
+/****************************************************************************
+Aaru Data Preservation Suite
+-----------------------------------------------------------------------------
+
+    Author(s)      : Natalia Portillo
+
+--[ License ] ---------------------------------------------------------------
+     This program 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.
+
+     This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+-----------------------------------------------------------------------------
+Copyright (C) 2011-2021 Natalia Portillo
+*****************************************************************************/
+
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <time.h>
+
+#include "log.h"
+
+#include "main.h"
+
+static int log_opened;
+static int log_quiet;
+FILE*      log_file;
+
+int log_open(int quiet)
+{
+    time_t curtime;
+
+    log_opened = 0;
+    log_quiet  = 0;
+
+    curtime = time(NULL);
+
+    log_file = fopen("fssetter.log", "a+");
+
+    if(log_file == NULL)
+    {
+        fprintf(stderr, "Error %d opening log.\n", errno);
+        return 1;
+    }
+
+    fprintf(log_file, "Aaru Filesystem Tester (Setter) %s\n", AARU_FSTESTER_VERSION);
+    fprintf(log_file, "%s\n", AARU_COPYRIGHT);
+    fprintf(log_file, "==============================================\n");
+    fprintf(log_file, "Log started on %s\n\n", asctime(gmtime(&curtime)));
+    fflush(log_file);
+
+    log_opened = 1;
+    log_quiet  = quiet;
+
+    return 0;
+}
+
+void log_write(const char* fmt, ...)
+{
+    va_list args;
+
+    if(log_opened)
+    {
+        va_start(args, fmt);
+        vfprintf(log_file, fmt, args);
+        va_end(args);
+
+        fflush(log_file);
+    }
+
+    if(!log_quiet)
+    {
+        va_start(args, fmt);
+        vprintf(fmt, args);
+        va_end(args);
+    }
+}
+
+void log_close()
+{
+    time_t curtime;
+    if(!log_opened) return;
+
+    curtime = time(NULL);
+
+    fprintf(log_file, "==============================================\n");
+    fprintf(log_file, "Log finished on %s\n", asctime(gmtime(&curtime)));
+    fprintf(log_file, "==============================================\n\n");
+
+    fclose(log_file);
+
+    log_file   = NULL;
+    log_opened = 0;
+    log_quiet  = 0;
+}
+
+void log_set_quiet(int quiet)
+{
+    log_file  = NULL;
+    log_quiet = quiet;
+}