From 371468655c0adbedbe5148fddd2dacaae9eac6e0 Mon Sep 17 00:00:00 2001
From: Thorsten Töpper <atsutane@freethoughts.de>
Date: Thu, 7 Aug 2025 23:33:31 +0200
Subject: options/output: add --quiet to suppress error/warning messages

As the LOGERR macro is modified this option will also suppress debug
messages in case the executable was built with -DDEBUGBUILD.
---
 include/options.h      |  1 +
 include/output.h       |  3 ++-
 man/dir_monitor.1.adoc |  3 +++
 src/options.c          | 14 +++++++++++++-
 4 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/include/options.h b/include/options.h
index cae9aa0..c92dbdf 100644
--- a/include/options.h
+++ b/include/options.h
@@ -30,6 +30,7 @@ extern bool option_sort_reverse_order;
 extern enum esort_type option_sort_type;
 extern bool option_print_boxed_table;
 extern bool option_print_header;
+extern bool option_quiet;
 extern bool option_resolve_symlinks;
 extern bool option_show_hidden_entries;
 extern bool option_timestamp_long;
diff --git a/include/output.h b/include/output.h
index 53f0869..38546aa 100644
--- a/include/output.h
+++ b/include/output.h
@@ -8,10 +8,11 @@
 #define OUTPUT_H
 #include <stdio.h>
 
+#include "options.h"
 #include "data_management.h"
 
 
-#define LOGERR(...) {fprintf(stderr, "[%s:%d] %s: ", __FILE__, __LINE__, __func__); fprintf(stderr, __VA_ARGS__);}
+#define LOGERR(...) {if (!option_quiet){ fprintf(stderr, "[%s:%d] %s: ", __FILE__, __LINE__, __func__); fprintf(stderr, __VA_ARGS__); }}
 
 #ifdef DEBUGBUILD
 #define DBGTRC(...) LOGERR(__VA_ARGS__)
diff --git a/man/dir_monitor.1.adoc b/man/dir_monitor.1.adoc
index f890fb6..6aa15fc 100644
--- a/man/dir_monitor.1.adoc
+++ b/man/dir_monitor.1.adoc
@@ -34,6 +34,9 @@ Print output in form of a boxed table
 **--print-header**, **-H**::
 Print a header above the columns
 
+**--quiet**, **-q**::
+Suppress error and warning messages.
+
 **--resolve-symlinks**::
 The destination (name) of a symlink is resolved
 
diff --git a/src/options.c b/src/options.c
index 235792d..6aa913b 100644
--- a/src/options.c
+++ b/src/options.c
@@ -23,6 +23,7 @@ struct option long_options[] = {
     { "long-timestamp", no_argument, 0, 0 },
     { "print-boxed", no_argument, 0, 0 },
     { "print-header", no_argument, 0, 0 },
+    { "quiet", no_argument, 0, 0 },
     { "resolve-symlinks", no_argument, 0, 0 },
     { "reverse-sort", no_argument, 0, 0 },
     { "show-hidden-entries", no_argument, 0, 0 },
@@ -35,6 +36,7 @@ bool option_sort_reverse_order = false;
 enum esort_type option_sort_type = SORT_BY_SIZE;
 bool option_print_boxed_table = false;
 bool option_print_header = false;
+bool option_quiet = false;
 bool option_resolve_symlinks = false;
 bool option_show_hidden_entries = false;
 bool option_timestamp_long = false;
@@ -65,6 +67,8 @@ void usage(char *executable) {
             "Print a boxed table");
     fprintf(stderr, " %-25s %2s %10s  - %s\n", "--print-header", "-H", "",
             "Print a header above the columns");
+    fprintf(stderr, " %-25s %2s %10s  - %s\n", "--quiet", "-q", "",
+            "Don't print error messages or warnings");
     fprintf(stderr, " %-25s %2s %10s  - %s\n", "--resolve-symlinks", "", "",
             "the destination (name) of a symlink is resolved");
     fprintf(stderr, " %-25s %2s %10s  - %s\n", "--reverse-sort", "", "",
@@ -136,6 +140,11 @@ void set_option(const char *option_name, char *option_argument) {
         return;
     }
 
+    if (strcmp("quiet", option_name) == 0) {
+        option_quiet = true;
+        return;
+    }
+
     if (strcmp("show-hidden-entries", option_name) == 0) {
         option_show_hidden_entries = true;
         return;
@@ -199,7 +208,7 @@ int parse_arguments(int argc, char **argv) {
 
     while(1) {
         index = 0;
-        c = getopt_long(argc, argv, "abHhtf:", long_options, &index);
+        c = getopt_long(argc, argv, "abf:Hhqt", long_options, &index);
 
         if (c == -1) {
             break;
@@ -224,6 +233,9 @@ int parse_arguments(int argc, char **argv) {
             case 'H':
                 option_print_header = true;
                 break;
+            case 'q':
+                option_quiet = true;
+                break;
             case 't':
                 option_timestamp_long = true;
                 break;
-- 
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