* Steve McClure, 1998
*/
-#include <errno.h>
-#include <stdio.h>
+#include <limits.h>
+#include <time.h>
#include "misc.h"
-#include "nat.h"
-#include "tel.h"
-#include "proto.h"
-#include "com.h"
-#include "keyword.h"
-#include "file.h"
-#include "common.h"
#include "optlist.h"
-#include <time.h>
+static char *weekday(char *str, int *wday);
+static char *daytime(char *str, int *min);
+static char *daytime_range(char *str, int *from_min, int *to_min);
/*
- * returns true if game can be played now.
+ * Is week day WDAY (Sunday is 0) allowed by restriction DAYS?
+ * If DAYS is not empty, it lists the allowed week day names. See
+ * weekday() for syntax.
*/
int
-gamehours(time_t now)
+is_wday_allowed(int wday, char *days)
{
- register s_char *bp;
- register struct tm *tm;
- int day;
- int curtime;
- int okday[7];
- int hour[2];
-
- tm = localtime(&now);
- curtime = tm->tm_min + tm->tm_hour * 60;
- bp = game_days;
- if (*bp != 0) {
- for (day = 0; day < 7; day++)
- okday[day] = 0;
- while (NULL != (bp = kw_parse(CF_WEEKDAY, bp, &day)))
- okday[day] = 1;
- } else {
- for (day = 0; day < 7; day++)
- okday[day] = 1;
- }
- if (!okday[tm->tm_wday])
+ int wd;
+
+ if (!days || !*days)
+ return 1;
+
+ while (NULL != (days = weekday(days, &wd)))
+ if (wd == wday)
+ return 1;
+
+ return 0;
+}
+
+/*
+ * Is day time DTIME (minutes since midnight) allowed by restriction TIMES?
+ * If TIMES is not empty, it lists the allowed day time ranges. See
+ * daytime_range() for syntax.
+ */
+int
+is_daytime_allowed(int dtime, char *times)
+{
+ int from, to;
+
+ if (!times || !*times)
+ return 1;
+
+ while (NULL != (times = daytime_range(times, &from, &to)))
+ if (from <= dtime && dtime < to)
+ return 1;
+
+ return 0;
+}
+
+/*
+ * Can the game played at time T?
+ */
+int
+gamehours(time_t t)
+{
+ struct tm *tm;
+
+ tm = localtime(&t);
+ if (!is_wday_allowed(tm->tm_wday, game_days))
return 0;
- bp = game_hours;
- if (*bp != 0) {
- while (NULL != (bp = kw_parse(CF_TIMERANGE, bp, hour)))
- if (curtime >= hour[0] && curtime < hour[1])
- break;
- if (bp == 0)
- return 0;
+ return is_daytime_allowed(60 * tm->tm_hour + tm->tm_min, game_hours);
+}
+
+/*
+ * Is day time DTIME (minutes since midnight) near a time in TIMES?
+ * TIMES is a list of day times. See daytime() for syntax.
+ * DTIME is near a listed time T if its within T and T + SLOP minutes.
+ */
+int
+is_daytime_near(int dtime, char *times, int slop)
+{
+ int dt;
+
+ if (times)
+ while (NULL != (times = daytime(times, &dt)))
+ if (dt <= dtime && dtime < dt + slop)
+ return 1;
+
+ return 0;
+}
+
+/*
+ * Return time in minutes between DTIME and next time in TIMES.
+ * If TIMES doesn't give a time, return -1.
+ * DTIME is day time in minutes since midnight.
+ * TIMES is a list of day times. See daytime() for syntax.
+ */
+int
+min_to_next_daytime(int dtime, char *times)
+{
+ int mindt = INT_MAX;
+ int dt;
+
+ if (times) {
+ while (NULL != (times = daytime(times, &dt))) {
+ if (dt < dtime)
+ dt += 24 * 60; /* tomorrow */
+ if (dt < mindt)
+ mindt = dt;
+ }
+ }
+
+ if (mindt == INT_MAX)
+ return -1;
+ return mindt - dtime;
+}
+
+/*
+ * Parse weekday name in STR.
+ * On success assign day number (Sunday is 0) to *WDAY and return
+ * pointer to first character not parsed.
+ * Else return NULL.
+ * Abbreviated names are recognized, but not single characters.
+ * Initial whitespace is ignored.
+ */
+static char *
+weekday(char *str, int *wday)
+{
+ /*
+ * strptime() format " %a" would do fine, but it's XPG and Windows
+ * doesn't have it. Besides, Empire accepts more abbreviations.
+ */
+ static char *day_name[7] = {
+ "sunday", "monday", "tuesday", "wednesday",
+ "thursday", "friday", "saturday" };
+ int i, j;
+
+ for (; isspace(*str); ++str) ;
+
+ for (i = 0; i < 7; ++i) {
+ j = 0;
+ while (str[j] && tolower(str[j]) == day_name[i][j])
+ ++j;
+ if (j > 1) {
+ *wday = i;
+ return str + j;
+ }
}
- return 1;
+
+ return NULL;
+}
+
+/*
+ * Parse day time in STR.
+ * On success store minutes since midnight in *MIN and return pointer
+ * to first character not parsed.
+ * Else return NULL.
+ * Time format is HOUR:MINUTE. Initial whitespace is ignored.
+ */
+char *
+daytime(char *str, int *min)
+{
+ /*
+ * strptime() format " %H:%M" would do fine, but it's XPG and
+ * Windows doesn't have it.
+ */
+ char *end;
+ unsigned long h, m;
+
+ h = strtoul(str, &end, 10);
+ if (end == str || h > 23)
+ return NULL;
+
+ if (*end++ != ':')
+ return NULL;
+
+ str = end;
+ m = strtoul(str, &end, 10);
+ if (end == str || m > 59)
+ return NULL;
+
+ *min = 60 * h + m;
+ return end;
+}
+
+/*
+ * Parse a day time range in STR.
+ * On success store minutes since midnight in *FROM and *TO, return
+ * pointer to first character not parsed.
+ * Else return NULL.
+ * Format is HOUR:MINUTE-HOUR:MINUTE. Initial whitespace is ignored.
+ */
+char *
+daytime_range(char *str, int *from_min, int *to_min)
+{
+ char *end;
+
+ end = daytime(str, from_min);
+ if (!end)
+ return NULL;
+ while (isspace(*end)) ++end;
+ if (*end++ != '-')
+ return NULL;
+ return daytime(end, to_min);
}
projects / empserver / blobdiff