NEW MODEEeEeeeeeeEEEeeeeeEEe

1 files changed, 68 insertions, 13 deletions

diff --git a/timetolocal.c b/timetolocal.c
index 0b96bf8..f5998dd 100644
--- a/timetolocal.c
+++ b/timetolocal.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <strings.h>
+#include <sys/types.h>
 #include <time.h>
 #include <stdlib.h>
 #include <ctype.h>
@@ -53,17 +54,22 @@ char* gethhmm(char* buffer, size_t max_size) {
     return buffer;
 }
 
+int gettimeandstuff(void){
+    time_t rawtime = time(NULL);
+    struct tm utc = *gmtime(&rawtime); /*copy, gmtime uses a static buffer*/
+ 
+    utc.tm_isdst = -1;
+    time_t gmt = mktime(&utc);
+    return difftime(rawtime, gmt) / 60;
+}
+
+
 /*tozone = 0 time is in zone, print it as local time
 tozone = 1 time is local time, print it in zone
 returns 0 ok -1 zone not found and -2 if invalid time*/
 int convert(char *timey, char *zone, int tozone){
-    time_t rawtime = time(NULL);
-    struct tm utc = *gmtime(&rawtime); //gmtime uses a static buffer so it just copies 
-
-    utc.tm_isdst = -1;
-    time_t gmt = mktime(&utc);
-    int offset = difftime(rawtime, gmt) / 60;
-    //this sould take even daylight savings too, i stole it from stack overflow i've been trying to not use llms to code shit like this
+    
+    int offset = gettimeandstuff(); 
 
     //tmzn hour --> utc00 --> local time 
     int zntime = findintable(zone);
@@ -86,22 +92,71 @@ int convert(char *timey, char *zone, int tozone){
     if(day) printf(" %+dd", day);  
     printf("\n");
     return 0;
-} 
+}
 
+/*takes in a single argument
+and returns whatever timezones allign with the input*/
+int convert2(char *timey){
+    /*it should fist get the offset between local time and input
+    it should probably round up to ~5 minutes so multiples of 5
+    input is like 7:32 rounds down to 7:30 
+    finds the closest match, on many matches it just presents the first in the list*/ 
+ 
+    int localoffset = gettimeandstuff(); 
+    davidtime hi; 
+    if(strtimetoint(timey, &hi) == -1) return -2;
+ 
+    char nowstr[16];
+    davidtime now;
+    gethhmm(nowstr, sizeof(nowstr));
+    strtimetoint(nowstr, &now);
+ 
+    int inmins  = hi.hour * 60 + hi.minutes;
+    int nowmins = now.hour * 60 + now.minutes;
+    inmins  -= inmins % 5;   /*round down to multiples of 5*/
+    nowmins -= nowmins % 5;
+ 
+    //offset of the zone that has the input as its current time
+    int target = localoffset + (inmins - nowmins);
+ 
+    int best = -1, bestdist = 1441;
+    for(size_t i = 0; i < TZTABLE_LENGHT; i++){
+        //distance on the 24h clock so +13 and -11 count as the same time
+        int d = ((tz_table[i].offset - target) % 1440 + 1440) % 1440;
+        if(d > 720) d = 1440 - d;
+        if(d < bestdist){ 
+            bestdist = d;
+            best = (int)i;
+        }
+    }
+    if(best == -1) return -1;
+ 
+    int off = tz_table[best].offset;
+    printf("%s (UTC%c%02d:%02d)\n", tz_table[best].zn, off < 0 ? '-' : '+', abs(off) / 60, abs(off) % 60);
+    return 0;
+}
 
 int main (int argc, char **argv){
-
+ 
     if((argc <= 1) || (argc > 3)){
-        printf("%s: usage: %s [TIME (24hs)] [ZONE]\ne.g: %s 7:15 est\n\nalso get relative times like %s [ZONE]\ne.g: %s est\n", argv[0], argv[0], argv[0], argv[0], argv[0]);
+        printf("%s: usage: %s [TIME (24hs)] [ZONE]\ne.g: %s 7:15 est\n\nalso get relative times like %s [ZONE]\ne.g: %s est\n\nor find which zone has a given time right now like %s [TIME (24hs)]\ne.g: %s 17:00\n", argv[0], argv[0], argv[0], argv[0], argv[0], argv[0], argv[0]);
         exit(1);
     }
-
+ 
     char timestr[16];
     gethhmm(timestr, sizeof(timestr));
     if (argc == 2) {
         if (isdigit((unsigned char)argv[1][0])) {
-            printf("timezones don't have numbers in them\n");
-            return 1;
+            int res2 = convert2(argv[1]);
+            if (res2 == -2) {
+                printf("%s: invalid time, use 24hs format like 7:15\n", argv[0]);
+                return 1;
+            }
+            if (res2 == -1) {
+                printf("%s: no time zones to match against\n", argv[0]);
+                return 1;
+            }
+            return 0;
         }
         if (convert(timestr, argv[1], 1) == -1) {
             printf("%s: time zone not found, did you write it correctly?\n", argv[0]);