Store everything from lstat()

1 files changed, 34 insertions, 1 deletions

diff --git a/src/options.c b/src/options.c
index 2136c83..e60d4a2 100644
--- a/src/options.c
+++ b/src/options.c
@@ -8,6 +8,7 @@
 #include <string.h>
 #include <getopt.h>
 #include <stdbool.h>
+#include <ctype.h>
 
 #include "output.h"
 #include "options.h"
@@ -16,17 +17,26 @@
 
 /* === GLOBAL VARIABLES === */
 struct option long_options[] = {
+    { "long-timestamp", no_argument, 0, 0 },
     { "reverse-sort", no_argument, 0, 0 },
     { "show-hidden-entries", no_argument, 0, 0 },
     { "sort-by", required_argument, 0, 0 },
-    { "long-timestamp", no_argument, 0, 0 },
+    { "time-field", required_argument, 0, 0 },
     { 0, 0, 0, 0 }
 };
+
 bool option_sort_reverse_order = false;
 enum esort_type option_sort_type = SORT_BY_SIZE;
 bool option_show_hidden_entries = false;
 bool option_timestamp_long = false;
 
+/* There are three fields regarding time, valid values 'a','c', 'm':
+ * st_atime / st_atim.tv_sec - time of the last access
+ * st_ctime / st_ctim.tv_sec - time of the last change to the inode
+ * st_mtime / st_mtim.tv_sec - time of last modification of the content
+ */
+char option_time_field = 'm';
+
 
 
 /* === IMPLEMENTATION === */
@@ -43,6 +53,8 @@ void usage(char *executable) {
             "Show hidden entries in the directory");
     fprintf(stderr, " %-25s %2s %10s %s\n", "--sort-by", "", "size|time",
             "Sort either by time or size");
+    fprintf(stderr, " %-25s %2s %10s %s\n", "--time-field", "", "a|c|m",
+            "Sort by (a)ccess, (c)hange or (m)odification time. Default: m");
 }
 
 
@@ -89,6 +101,27 @@ void set_option(const char *option_name, char *option_argument) {
         return;
     }
 
+    if (strcmp(option_name, "time-field") == 0) {
+        switch (option_argument[0]) {
+            case 'a':
+                option_time_field = 'a';
+                break;
+            case 'c':
+                option_time_field = 'c';
+                break;
+            case 'm':
+                option_time_field = 'm';
+                break;
+            default:
+                /* Keep in mind: isgraph ignores space, but an explicit call --time-field ' ' is strange */
+                LOGERR("WARNING: --time-field: invalid value %c 0x%02X - falling back to default m\n",
+                    ((isgraph(option_argument[0])) ? option_argument[0] : ' '), option_argument[0]);
+                option_time_field = 'm';
+                break;
+        };
+        return;
+    }
+
     LOGERR("ERROR: Option '%s' not recognized\n.", option_name);
 }