X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=lib%2Fgetdate.y;h=658da69fcda14200134889cea2bc5619f3be0625;hb=196caec187f27a3c3e4a68eee6bb388d79dac960;hp=ed35cf3c6f055e084d59ccaff971006873cbce35;hpb=77de7dbb2f58c87ba6490fd3da39784b10dc826a;p=chaz%2Ftar

diff --git a/lib/getdate.y b/lib/getdate.y
index ed35cf3..658da69 100644
--- a/lib/getdate.y
+++ b/lib/getdate.y
@@ -73,7 +73,7 @@
 # include <string.h>
 #endif
 
-#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__
 # define __attribute__(x)
 #endif
 
@@ -146,6 +146,7 @@ struct parser_control
   table local_time_zone_table[3];
 };
 
+#define PC (* (struct parser_control *) parm)
 #define YYLEX_PARAM parm
 #define YYPARSE_PARAM parm
 #define YYSTYPE int
@@ -174,102 +175,100 @@ spec:
 
 item:
     time
-      { ((struct parser_control *) parm)->times_seen++; }
+      { PC.times_seen++; }
   | local_zone
-      { ((struct parser_control *) parm)->local_zones_seen++; }
+      { PC.local_zones_seen++; }
   | zone
-      { ((struct parser_control *) parm)->zones_seen++; }
+      { PC.zones_seen++; }
   | date
-      { ((struct parser_control *) parm)->dates_seen++; }
+      { PC.dates_seen++; }
   | day
-      { ((struct parser_control *) parm)->days_seen++; }
+      { PC.days_seen++; }
   | rel
-      { ((struct parser_control *) parm)->rels_seen++; }
+      { PC.rels_seen++; }
   | number
   ;
 
 time:
     tUNUMBER tMERIDIAN
       {
-	((struct parser_control *) parm)->hour = $1;
-	((struct parser_control *) parm)->minutes = 0;
-	((struct parser_control *) parm)->seconds = 0;
-	((struct parser_control *) parm)->meridian = $2;
+	PC.hour = $1;
+	PC.minutes = 0;
+	PC.seconds = 0;
+	PC.meridian = $2;
       }
   | tUNUMBER ':' tUNUMBER o_merid
       {
-	((struct parser_control *) parm)->hour = $1;
-	((struct parser_control *) parm)->minutes = $3;
-	((struct parser_control *) parm)->seconds = 0;
-	((struct parser_control *) parm)->meridian = $4;
+	PC.hour = $1;
+	PC.minutes = $3;
+	PC.seconds = 0;
+	PC.meridian = $4;
       }
   | tUNUMBER ':' tUNUMBER tSNUMBER
       {
-	((struct parser_control *) parm)->hour = $1;
-	((struct parser_control *) parm)->minutes = $3;
-	((struct parser_control *) parm)->meridian = MER24;
-	((struct parser_control *) parm)->zones_seen++;
-	((struct parser_control *) parm)->time_zone =
-	  $4 % 100 + ($4 / 100) * 60;
+	PC.hour = $1;
+	PC.minutes = $3;
+	PC.meridian = MER24;
+	PC.zones_seen++;
+	PC.time_zone = $4 % 100 + ($4 / 100) * 60;
       }
   | tUNUMBER ':' tUNUMBER ':' tUNUMBER o_merid
       {
-	((struct parser_control *) parm)->hour = $1;
-	((struct parser_control *) parm)->minutes = $3;
-	((struct parser_control *) parm)->seconds = $5;
-	((struct parser_control *) parm)->meridian = $6;
+	PC.hour = $1;
+	PC.minutes = $3;
+	PC.seconds = $5;
+	PC.meridian = $6;
       }
   | tUNUMBER ':' tUNUMBER ':' tUNUMBER tSNUMBER
       {
-	((struct parser_control *) parm)->hour = $1;
-	((struct parser_control *) parm)->minutes = $3;
-	((struct parser_control *) parm)->seconds = $5;
-	((struct parser_control *) parm)->meridian = MER24;
-	((struct parser_control *) parm)->zones_seen++;
-	((struct parser_control *) parm)->time_zone =
-	  $6 % 100 + ($6 / 100) * 60;
+	PC.hour = $1;
+	PC.minutes = $3;
+	PC.seconds = $5;
+	PC.meridian = MER24;
+	PC.zones_seen++;
+	PC.time_zone = $6 % 100 + ($6 / 100) * 60;
       }
   ;
 
 local_zone:
     tLOCAL_ZONE
-      { ((struct parser_control *) parm)->local_isdst = $1; }
+      { PC.local_isdst = $1; }
   | tLOCAL_ZONE tDST
-      { ((struct parser_control *) parm)->local_isdst = $1 < 0 ? 1 : $1 + 1; }
+      { PC.local_isdst = $1 < 0 ? 1 : $1 + 1; }
   ;
 
 zone:
     tZONE
-      { ((struct parser_control *) parm)->time_zone = $1; }
+      { PC.time_zone = $1; }
   | tDAYZONE
-      { ((struct parser_control *) parm)->time_zone = $1 + 60; }
+      { PC.time_zone = $1 + 60; }
   | tZONE tDST
-      { ((struct parser_control *) parm)->time_zone = $1 + 60; }
+      { PC.time_zone = $1 + 60; }
   ;
 
 day:
     tDAY
       {
-	((struct parser_control *) parm)->day_ordinal = 1;
-	((struct parser_control *) parm)->day_number = $1;
+	PC.day_ordinal = 1;
+	PC.day_number = $1;
       }
   | tDAY ','
       {
-	((struct parser_control *) parm)->day_ordinal = 1;
-	((struct parser_control *) parm)->day_number = $1;
+	PC.day_ordinal = 1;
+	PC.day_number = $1;
       }
   | tUNUMBER tDAY
       {
-	((struct parser_control *) parm)->day_ordinal = $1;
-	((struct parser_control *) parm)->day_number = $2;
+	PC.day_ordinal = $1;
+	PC.day_number = $2;
       }
   ;
 
 date:
     tUNUMBER '/' tUNUMBER
       {
-	((struct parser_control *) parm)->month = $1;
-	((struct parser_control *) parm)->day = $3;
+	PC.month = $1;
+	PC.day = $3;
       }
   | tUNUMBER '/' tUNUMBER '/' tUNUMBER
       {
@@ -279,138 +278,136 @@ date:
 	   you want portability, use the ISO 8601 format.  */
 	if (1000 <= $1)
 	  {
-	    ((struct parser_control *) parm)->year = $1;
-	    ((struct parser_control *) parm)->month = $3;
-	    ((struct parser_control *) parm)->day = $5;
+	    PC.year = $1;
+	    PC.month = $3;
+	    PC.day = $5;
 	  }
 	else
 	  {
-	    ((struct parser_control *) parm)->month = $1;
-	    ((struct parser_control *) parm)->day = $3;
-	    ((struct parser_control *) parm)->year = $5;
+	    PC.month = $1;
+	    PC.day = $3;
+	    PC.year = $5;
 	  }
       }
   | tUNUMBER tSNUMBER tSNUMBER
       {
 	/* ISO 8601 format.  YYYY-MM-DD.  */
-	((struct parser_control *) parm)->year = $1;
-	((struct parser_control *) parm)->month = -$2;
-	((struct parser_control *) parm)->day = -$3;
+	PC.year = $1;
+	PC.month = -$2;
+	PC.day = -$3;
       }
   | tUNUMBER tMONTH tSNUMBER
       {
 	/* e.g. 17-JUN-1992.  */
-	((struct parser_control *) parm)->day = $1;
-	((struct parser_control *) parm)->month = $2;
-	((struct parser_control *) parm)->year = -$3;
+	PC.day = $1;
+	PC.month = $2;
+	PC.year = -$3;
       }
   | tMONTH tUNUMBER
       {
-	((struct parser_control *) parm)->month = $1;
-	((struct parser_control *) parm)->day = $2;
+	PC.month = $1;
+	PC.day = $2;
       }
   | tMONTH tUNUMBER ',' tUNUMBER
       {
-	((struct parser_control *) parm)->month = $1;
-	((struct parser_control *) parm)->day = $2;
-	((struct parser_control *) parm)->year = $4;
+	PC.month = $1;
+	PC.day = $2;
+	PC.year = $4;
       }
   | tUNUMBER tMONTH
       {
-	((struct parser_control *) parm)->month = $2;
-	((struct parser_control *) parm)->day = $1;
+	PC.month = $2;
+	PC.day = $1;
       }
   | tUNUMBER tMONTH tUNUMBER
       {
-	((struct parser_control *) parm)->month = $2;
-	((struct parser_control *) parm)->day = $1;
-	((struct parser_control *) parm)->year = $3;
+	PC.month = $2;
+	PC.day = $1;
+	PC.year = $3;
       }
   ;
 
 rel:
     relunit tAGO
       {
-	((struct parser_control *) parm)->rel_seconds = -((struct parser_control *) parm)->rel_seconds;
-	((struct parser_control *) parm)->rel_minutes = -((struct parser_control *) parm)->rel_minutes;
-	((struct parser_control *) parm)->rel_hour = -((struct parser_control *) parm)->rel_hour;
-	((struct parser_control *) parm)->rel_day = -((struct parser_control *) parm)->rel_day;
-	((struct parser_control *) parm)->rel_month = -((struct parser_control *) parm)->rel_month;
-	((struct parser_control *) parm)->rel_year = -((struct parser_control *) parm)->rel_year;
+	PC.rel_seconds = -PC.rel_seconds;
+	PC.rel_minutes = -PC.rel_minutes;
+	PC.rel_hour = -PC.rel_hour;
+	PC.rel_day = -PC.rel_day;
+	PC.rel_month = -PC.rel_month;
+	PC.rel_year = -PC.rel_year;
       }
   | relunit
   ;
 
 relunit:
     tUNUMBER tYEAR_UNIT
-      { ((struct parser_control *) parm)->rel_year += $1 * $2; }
+      { PC.rel_year += $1 * $2; }
   | tSNUMBER tYEAR_UNIT
-      { ((struct parser_control *) parm)->rel_year += $1 * $2; }
+      { PC.rel_year += $1 * $2; }
   | tYEAR_UNIT
-      { ((struct parser_control *) parm)->rel_year += $1; }
+      { PC.rel_year += $1; }
   | tUNUMBER tMONTH_UNIT
-      { ((struct parser_control *) parm)->rel_month += $1 * $2; }
+      { PC.rel_month += $1 * $2; }
   | tSNUMBER tMONTH_UNIT
-      { ((struct parser_control *) parm)->rel_month += $1 * $2; }
+      { PC.rel_month += $1 * $2; }
   | tMONTH_UNIT
-      { ((struct parser_control *) parm)->rel_month += $1; }
+      { PC.rel_month += $1; }
   | tUNUMBER tDAY_UNIT
-      { ((struct parser_control *) parm)->rel_day += $1 * $2; }
+      { PC.rel_day += $1 * $2; }
   | tSNUMBER tDAY_UNIT
-      { ((struct parser_control *) parm)->rel_day += $1 * $2; }
+      { PC.rel_day += $1 * $2; }
   | tDAY_UNIT
-      { ((struct parser_control *) parm)->rel_day += $1; }
+      { PC.rel_day += $1; }
   | tUNUMBER tHOUR_UNIT
-      { ((struct parser_control *) parm)->rel_hour += $1 * $2; }
+      { PC.rel_hour += $1 * $2; }
   | tSNUMBER tHOUR_UNIT
-      { ((struct parser_control *) parm)->rel_hour += $1 * $2; }
+      { PC.rel_hour += $1 * $2; }
   | tHOUR_UNIT
-      { ((struct parser_control *) parm)->rel_hour += $1; }
+      { PC.rel_hour += $1; }
   | tUNUMBER tMINUTE_UNIT
-      { ((struct parser_control *) parm)->rel_minutes += $1 * $2; }
+      { PC.rel_minutes += $1 * $2; }
   | tSNUMBER tMINUTE_UNIT
-      { ((struct parser_control *) parm)->rel_minutes += $1 * $2; }
+      { PC.rel_minutes += $1 * $2; }
   | tMINUTE_UNIT
-      { ((struct parser_control *) parm)->rel_minutes += $1; }
+      { PC.rel_minutes += $1; }
   | tUNUMBER tSEC_UNIT
-      { ((struct parser_control *) parm)->rel_seconds += $1 * $2; }
+      { PC.rel_seconds += $1 * $2; }
   | tSNUMBER tSEC_UNIT
-      { ((struct parser_control *) parm)->rel_seconds += $1 * $2; }
+      { PC.rel_seconds += $1 * $2; }
   | tSEC_UNIT
-      { ((struct parser_control *) parm)->rel_seconds += $1; }
+      { PC.rel_seconds += $1; }
   ;
 
 number:
     tUNUMBER
       {
-	if (((struct parser_control *) parm)->times_seen
-	    && ((struct parser_control *) parm)->dates_seen
-	    && ! ((struct parser_control *) parm)->rels_seen)
-	  ((struct parser_control *) parm)->year = $1;
+	if (PC.dates_seen && ! PC.rels_seen && (PC.times_seen || 100 <= $1))
+	  PC.year = $1;
 	else
 	  {
 	    if (10000 < $1)
 	      {
-		((struct parser_control *) parm)->dates_seen++;
-		((struct parser_control *) parm)->day = $1 % 100;
-		((struct parser_control *) parm)->month = ($1 / 100) % 100;
-		((struct parser_control *) parm)->year = $1 / 10000;
+		PC.dates_seen++;
+		PC.day = $1 % 100;
+		PC.month = ($1 / 100) % 100;
+		PC.year = $1 / 10000;
 	      }
 	    else
 	      {
-		((struct parser_control *) parm)->times_seen++;
+		PC.times_seen++;
 		if ($1 < 100)
 		  {
-		    ((struct parser_control *) parm)->hour = $1;
-		    ((struct parser_control *) parm)->minutes = 0;
+		    PC.hour = $1;
+		    PC.minutes = 0;
 		  }
 		else
 		  {
-		    ((struct parser_control *) parm)->hour = $1 / 100;
-		    ((struct parser_control *) parm)->minutes = $1 % 100;
+		    PC.hour = $1 / 100;
+		    PC.minutes = $1 % 100;
 		  }
-		((struct parser_control *) parm)->seconds = 0;
-		((struct parser_control *) parm)->meridian = MER24;
+		PC.seconds = 0;
+		PC.meridian = MER24;
 	      }
 	  }
       }
@@ -506,7 +503,7 @@ static table const relative_time_table[] =
   { "TODAY",	tMINUTE_UNIT,	 0 },
   { "NOW",	tMINUTE_UNIT,	 0 },
   { "LAST",	tUNUMBER,	-1 },
-  { "THIS",	tMINUTE_UNIT,	 0 },
+  { "THIS",	tUNUMBER,	 0 },
   { "NEXT",	tUNUMBER,	 1 },
   { "FIRST",	tUNUMBER,	 1 },
 /*{ "SECOND",	tUNUMBER,	 2 }, */
@@ -834,7 +831,10 @@ yyerror (char *s ATTRIBUTE_UNUSED)
   return 0;
 }
 
-/* ?? */
+/* Parse a date/time string P.  Return the corresponding time_t value,
+   or (time_t) -1 if there is an error.  P can be an incomplete or
+   relative time specification; if so, use *NOW as the basis for the
+   returned time.  */
 time_t
 get_date (const char *p, const time_t *now)
 {
@@ -879,18 +879,18 @@ get_date (const char *p, const time_t *now)
   /* Probe the names used in the next three calendar quarters, looking
      for a tm_isdst different from the one we already have.  */
   {
-    int probe;
-    for (probe = 1; probe <= 3; probe++)
+    int quarter;
+    for (quarter = 1; quarter <= 3; quarter++)
       {
-	time_t probe = Start + probe * (90 * 24 * 60 * 60);
-	struct tm *tm = localtime (&probe);
-	if (tm && tm->tm_zone
-	    && tm->tm_isdst != pc.local_time_zone_table[0].value)
+	time_t probe = Start + quarter * (90 * 24 * 60 * 60);
+	struct tm *probe_tm = localtime (&probe);
+	if (probe_tm && probe_tm->tm_zone
+	    && probe_tm->tm_isdst != pc.local_time_zone_table[0].value)
 	  {
 	      {
-		pc.local_time_zone_table[1].name = tm->tm_zone;
+		pc.local_time_zone_table[1].name = probe_tm->tm_zone;
 		pc.local_time_zone_table[1].type = tLOCAL_ZONE;
-		pc.local_time_zone_table[1].value = tm->tm_isdst;
+		pc.local_time_zone_table[1].value = probe_tm->tm_isdst;
 		pc.local_time_zone_table[2].name = 0;
 	      }
 	    break;