Disk: add keys years, days-of-year and years-fraction

Fix #1847

Author: CarterLi

src/modules/disk/disk.c

@@ -125,7 +125,8 @@ static void printDisk(FFDiskOptions* options, const FFDisk* disk, uint32_t index
         bool isHidden = !!(disk->type & FF_DISK_VOLUME_TYPE_HIDDEN_BIT);
         bool isReadOnly = !!(disk->type & FF_DISK_VOLUME_TYPE_READONLY_BIT);
 
-        uint64_t duration = ffTimeGetNow() - disk->createTime;
+        uint64_t now = ffTimeGetNow();
+        uint64_t duration = now - disk->createTime;
         uint32_t milliseconds = (uint32_t) (duration % 1000);
         duration /= 1000;
         uint32_t seconds = (uint32_t) (duration % 60);
@@ -136,6 +137,33 @@ static void printDisk(FFDiskOptions* options, const FFDisk* disk, uint32_t index
         duration /= 24;
         uint32_t days = (uint32_t) duration;
 
+        time_t past_s = (time_t) (disk->createTime / 1000);
+        struct tm past_tm;
+        #ifdef _WIN32
+        localtime_s(&past_tm, &past_s);
+        #else
+        localtime_r(&past_s, &past_tm);
+        #endif
+
+        time_t now_s = (time_t) (now / 1000);
+        struct tm now_tm;
+        #ifdef _WIN32
+        localtime_s(&now_tm, &now_s);
+        #else
+        localtime_r(&now_s, &now_tm);
+        #endif
+
+        uint32_t years = (uint32_t) (now_tm.tm_year - past_tm.tm_year);
+        if (now_tm.tm_yday < past_tm.tm_yday)
+            years--;
+        past_tm.tm_year += years;
+        uint32_t gap_s = (uint32_t) (now_s - mktime(&past_tm));
+        uint32_t daysOfYear = gap_s / (24 * 60 * 60);
+
+        uint32_t pastYear = past_tm.tm_year + 1900;
+        bool isLeapYear = (pastYear % 4 == 0 && pastYear % 100 != 0) || (pastYear % 400 == 0);
+        double yearsFraction = (double) daysOfYear / (isLeapYear ? 366 : 365) + years;
+
         FF_PRINT_FORMAT_CHECKED(key.chars, 0, &options->moduleArgs, FF_PRINT_TYPE_NO_CUSTOM_KEY, ((FFformatarg[]) {
             FF_FORMAT_ARG(usedPretty, "size-used"),
             FF_FORMAT_ARG(totalPretty, "size-total"),
@@ -158,6 +186,9 @@ static void printDisk(FFDiskOptions* options, const FFDisk* disk, uint32_t index
             FF_FORMAT_ARG(milliseconds, "milliseconds"),
             FF_FORMAT_ARG(disk->mountpoint, "mountpoint"),
             FF_FORMAT_ARG(disk->mountFrom, "mount-from"),
+            FF_FORMAT_ARG(years, "years"),
+            FF_FORMAT_ARG(daysOfYear, "days-of-year"),
+            FF_FORMAT_ARG(yearsFraction, "years-fraction"),
         }));
     }
 }
@@ -523,6 +554,9 @@ static FFModuleBaseInfo ffModuleInfo = {
         {"Milliseconds after creation", "milliseconds"},
         {"Mount point / drive letter", "mountpoint"},
         {"Mount from (device path)", "mount-from"},
+        {"Years integer after creation", "years"},
+        {"Days of year after creation", "days-of-year"},
+        {"Years fraction after creation", "years-fraction"},
     }))
 };