Fix up "make doc"

diff --git a/date.c b/date.c
index aa4fb3efef5f35d510c14c3a73d497143406f5e7..b46f2ce344d53585901820b39dffc8cb4c631364 100644 (file)
--- a/date.c
+++ b/date.c
@@ -4,12 +4,11 @@
  * Copyright (C) Linus Torvalds, 2005
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
 #include <ctype.h>
 #include <time.h>
 
+#include "cache.h"
+
 static time_t my_mktime(struct tm *tm)
 {
        static const int mdays[] = {
@@ -38,6 +37,34 @@ static const char *weekday_names[] = {
        "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
 };
 
+/*
+ * The "tz" thing is passed in as this strange "decimal parse of tz"
+ * thing, which means that tz -0100 is passed in as the integer -100,
+ * even though it means "sixty minutes off"
+ */
+const char *show_date(unsigned long time, int tz)
+{
+       struct tm *tm;
+       time_t t;
+       static char timebuf[200];
+       int minutes;
+
+       minutes = tz < 0 ? -tz : tz;
+       minutes = (minutes / 100)*60 + (minutes % 100);
+       minutes = tz < 0 ? -minutes : minutes;
+       t = time + minutes * 60;
+       tm = gmtime(&t);
+       if (!tm)
+               return NULL;
+       sprintf(timebuf, "%.3s %.3s %d %02d:%02d:%02d %d %+05d",
+               weekday_names[tm->tm_wday],
+               month_names[tm->tm_mon],
+               tm->tm_mday,
+               tm->tm_hour, tm->tm_min, tm->tm_sec,
+               tm->tm_year + 1900, tz);
+       return timebuf;
+}
+
 /*
  * Check these. And note how it doesn't do the summer-time conversion.
  *
@@ -197,7 +224,7 @@ static int is_date(int year, int month, int day, struct tm *tm)
        return 0;
 }
 
-static int match_multi_number(unsigned long num, char c, char *date, char *end, struct tm *tm)
+static int match_multi_number(unsigned long num, char c, const char *date, char *end, struct tm *tm)
 {
        long num2, num3;
 
@@ -243,7 +270,7 @@ static int match_multi_number(unsigned long num, char c, char *date, char *end,
 /*
  * We've seen a digit. Time? Year? Date? 
  */
-static int match_digit(char *date, struct tm *tm, int *offset)
+static int match_digit(const char *date, struct tm *tm, int *offset, int *tm_gmt)
 {
        int n;
        char *end;
@@ -256,8 +283,10 @@ static int match_digit(char *date, struct tm *tm, int *offset)
         */
        if (num > 946684800) {
                time_t time = num;
-               if (gmtime_r(&time, tm))
+               if (gmtime_r(&time, tm)) {
+                       *tm_gmt = 1;
                        return end - date;
+               }
        }
 
        /*
@@ -332,7 +361,7 @@ static int match_digit(char *date, struct tm *tm, int *offset)
        return n;
 }
 
-static int match_tz(char *date, int *offp)
+static int match_tz(const char *date, int *offp)
 {
        char *end;
        int offset = strtoul(date+1, &end, 10);
@@ -359,10 +388,10 @@ static int match_tz(char *date, int *offp)
 
 /* Gr. strptime is crap for this; it doesn't have a way to require RFC2822
    (i.e. English) day/month names, and it doesn't work correctly with %z. */
-void parse_date(char *date, char *result, int maxlen)
+void parse_date(const char *date, char *result, int maxlen)
 {
        struct tm tm;
-       int offset, sign;
+       int offset, sign, tm_gmt;
        time_t then;
 
        memset(&tm, 0, sizeof(tm));
@@ -371,6 +400,7 @@ void parse_date(char *date, char *result, int maxlen)
        tm.tm_mday = -1;
        tm.tm_isdst = -1;
        offset = -1;
+       tm_gmt = 0;
 
        for (;;) {
                int match = 0;
@@ -383,7 +413,7 @@ void parse_date(char *date, char *result, int maxlen)
                if (isalpha(c))
                        match = match_alpha(date, &tm, &offset);
                else if (isdigit(c))
-                       match = match_digit(date, &tm, &offset);
+                       match = match_digit(date, &tm, &offset, &tm_gmt);
                else if ((c == '-' || c == '+') && isdigit(date[1]))
                        match = match_tz(date, &offset);
 
@@ -403,7 +433,8 @@ void parse_date(char *date, char *result, int maxlen)
        if (then == -1)
                return;
 
-       then -= offset * 60;
+       if (!tm_gmt)
+               then -= offset * 60;
 
        sign = '+';
        if (offset < 0) {