removed all references to sprintf from several files (not all files yet)

[citadel.git] / citadel / genstamp.c

diff --git a/citadel/genstamp.c b/citadel/genstamp.c
index 4c7cf0d005aa51e00483e4c0a160bfbd4e83e917..737b3fa54ebd8fdfaa8535329527776f2d0f617e 100644 (file)
--- a/citadel/genstamp.c
+++ b/citadel/genstamp.c
@@ -5,11 +5,28 @@
  *
  */
 
+#ifdef DLL_EXPORT
+#define IN_LIBCIT
+#endif
+
+#define timezonevar 1
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
 #include <string.h>
-#include <time.h>
+
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+
 #include "genstamp.h"
 
 
@@ -27,20 +44,56 @@ static char *weekdays[] = {
  * Supplied with a unix timestamp, generate an RFC822-compliant textual
  * time and date stamp.
  */
-void generate_rfc822_datestamp(char *buf, time_t xtime) {
+void datestring(char *buf, size_t n, time_t xtime, int which_format) {
        struct tm *t;
 
+       long offset;
+       char offsign;
+
        t = localtime(&xtime);
 
-       sprintf(buf, "%s, %02d %s %04d %02d:%02d:%02d %s",
-               weekdays[t->tm_wday],
-               t->tm_mday,
-               months[t->tm_mon],
-               t->tm_year + 1900,
-               t->tm_hour,
-               t->tm_min,
-               t->tm_sec,
-               tzname[0]
-               );
+       /* Convert "seconds west of GMT" to "hours/minutes offset" */
+#ifdef HAVE_STRUCT_TM_TM_GMTOFF
+       offset = t->tm_gmtoff;
+#else
+       offset = timezone;
+#endif
+       if (offset > 0) {
+               offsign = '-';
+       }
+       else {
+               offset = 0L - offset;
+               offsign = '+';
+       }
+       offset = ( (offset / 3600) * 100 ) + ( offset % 60 );
+
+       switch(which_format) {
+
+               case DATESTRING_RFC822:
+                       snprintf(buf, n, "%s, %02d %s %04d %02d:%02d:%02d %c%04ld",
+                               weekdays[t->tm_wday],
+                               t->tm_mday,
+                               months[t->tm_mon],
+                               t->tm_year + 1900,
+                               t->tm_hour,
+                               t->tm_min,
+                               t->tm_sec,
+                               offsign, offset
+                               );
+               break;
+
+               case DATESTRING_IMAP:
+                       snprintf(buf, n, "%02d-%s-%04d %02d:%02d:%02d %c%04ld",
+                               t->tm_mday,
+                               months[t->tm_mon],
+                               t->tm_year + 1900,
+                               t->tm_hour,
+                               t->tm_min,
+                               t->tm_sec,
+                               offsign, offset
+                               );
+               break;
+
+       }
 }