tar-tree: Use the prefix field of a tar header

[git.git] / date.c

diff --git a/date.c b/date.c
index d2a67cc..1c1917b 100644 (file)
--- a/date.c
+++ b/date.c
@@ -123,8 +123,6 @@ static const struct {
        { "IDLE", +12, 0, },    /* International Date Line East */
 };
 
-#define NR_TZ (sizeof(timezone_names) / sizeof(timezone_names[0]))
-       
 static int match_string(const char *date, const char *str)
 {
        int i = 0;
@@ -173,7 +171,7 @@ static int match_alpha(const char *date, struct tm *tm, int *offset)
                }
        }
 
-       for (i = 0; i < NR_TZ; i++) {
+       for (i = 0; i < ARRAY_SIZE(timezone_names); i++) {
                int match = match_string(date, timezone_names[i].name);
                if (match >= 3) {
                        int off = timezone_names[i].offset;
@@ -326,7 +324,7 @@ static int match_digit(const char *date, struct tm *tm, int *offset, int *tm_gmt
 
        /*
         * NOTE! We will give precedence to day-of-month over month or
-        * year numebers in the 1-12 range. So 05 is always "mday 5",
+        * year numbers in the 1-12 range. So 05 is always "mday 5",
         * unless we already have a mday..
         *
         * IOW, 01 Apr 05 parses as "April 1st, 2005".
@@ -468,12 +466,52 @@ static void update_tm(struct tm *tm, unsigned long sec)
        localtime_r(&n, tm);
 }
 
+static void date_yesterday(struct tm *tm, int *num)
+{
+       update_tm(tm, 24*60*60);
+}
+
+static void date_time(struct tm *tm, int hour)
+{
+       if (tm->tm_hour < hour)
+               date_yesterday(tm, NULL);
+       tm->tm_hour = hour;
+       tm->tm_min = 0;
+       tm->tm_sec = 0;
+}
+
+static void date_midnight(struct tm *tm, int *num)
+{
+       date_time(tm, 0);
+}
+
+static void date_noon(struct tm *tm, int *num)
+{
+       date_time(tm, 12);
+}
+
+static void date_tea(struct tm *tm, int *num)
+{
+       date_time(tm, 17);
+}
+
+static const struct special {
+       const char *name;
+       void (*fn)(struct tm *, int *);
+} special[] = {
+       { "yesterday", date_yesterday },
+       { "noon", date_noon },
+       { "midnight", date_midnight },
+       { "tea", date_tea },
+       { NULL }
+};
+
 static const char *number_name[] = {
        "zero", "one", "two", "three", "four",
        "five", "six", "seven", "eight", "nine", "ten",
 };
 
-static struct typelen {
+static const struct typelen {
        const char *type;
        int length;
 } typelen[] = {
@@ -487,7 +525,8 @@ static struct typelen {
 
 static const char *approxidate_alpha(const char *date, struct tm *tm, int *num)
 {
-       struct typelen *tl;
+       const struct typelen *tl;
+       const struct special *s;
        const char *end = date;
        int n = 1, i;
 
@@ -502,9 +541,12 @@ static const char *approxidate_alpha(const char *date, struct tm *tm, int *num)
                }
        }
 
-       if (match_string(date, "yesterday") > 8) {
-               update_tm(tm, 24*60*60);
-               return end;
+       for (s = special; s->name; s++) {
+               int len = strlen(s->name);
+               if (match_string(date, s->name) == len) {
+                       s->fn(tm, num);
+                       return end;
+               }
        }
 
        if (!*num) {
@@ -596,7 +638,7 @@ unsigned long approxidate(const char *date)
        }
        if (number > 0 && number < 32)
                tm.tm_mday = number;
-       if (tm.tm_mon > now.tm_mon)
+       if (tm.tm_mon > now.tm_mon && tm.tm_year == now.tm_year)
                tm.tm_year--;
        return mktime(&tm);
 }