Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/lib/utc-mktime.c @ 9191:b340ecb24469 HEAD

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Fix VPATH build of RQUOTA support. Some rpcgen derive #include "..." paths from the infile argument. This will be off for VPATH builds, as the generated rquota_xdr.c code will look in $(srcdir), but we'll generate the rquota.h file in $(builddir). Play safe and copy rquota.x to $(builddir) first. This fixes the build on openSUSE 11.1.
author Matthias Andree <matthias.andree@gmx.de>
date Tue, 07 Jul 2009 21:01:36 +0200
parents b9faf4db2a9f
children 00cd9aacd03c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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b9faf4db2a9f Updated copyright notices to include year 2009.
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1 /* Copyright (c) 2007-2009 Dovecot authors, see the included COPYING file */
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2
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3 #include "lib.h"
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4 #include "utc-mktime.h"
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5
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6 static int tm_cmp(const struct tm *tm1, const struct tm *tm2)
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7 {
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8 int diff;
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9
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10 if ((diff = tm1->tm_year - tm2->tm_year) != 0)
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11 return diff;
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12 if ((diff = tm1->tm_mon - tm2->tm_mon) != 0)
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13 return diff;
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14 if ((diff = tm1->tm_mday - tm2->tm_mday) != 0)
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15 return diff;
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16 if ((diff = tm1->tm_hour - tm2->tm_hour) != 0)
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17 return diff;
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18 if ((diff = tm1->tm_min - tm2->tm_min) != 0)
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19 return diff;
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20 return tm1->tm_sec - tm2->tm_sec;
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21 }
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22
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23 time_t utc_mktime(const struct tm *tm)
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24 {
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25 const struct tm *try_tm;
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26 time_t t;
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27 int bits, dir;
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28
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29 /* we'll do a binary search across the entire valid time_t range.
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30 when gmtime()'s output matches the tm parameter, we've found the
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31 correct time_t value. this also means that if tm contains invalid
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32 values, -1 is returned. */
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33 #ifdef TIME_T_SIGNED
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34 t = 0;
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35 #else
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36 t = 1 << (TIME_T_MAX_BITS - 1);
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37 #endif
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38 for (bits = TIME_T_MAX_BITS - 2;; bits--) {
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39 try_tm = gmtime(&t);
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40 dir = tm_cmp(tm, try_tm);
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41 if (dir == 0)
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42 return t;
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43 if (bits < 0)
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44 break;
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45
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46 if (dir < 0)
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47 t -= (time_t)1 << bits;
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48 else
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49 t += (time_t)1 << bits;
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50 }
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51
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52 return (time_t)-1;
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53 }