Mercurial > libpst
annotate src/timeconv.c @ 118:0f1492b7fe8b
patch from Fridrich Strba for building on mingw and general cleanup of autoconf files
add processing for pst files of type 0x0f
start adding support for properly building and installing libpst.so and the header files required to use it.
remove version.h since the version number is now in config.h
more const correctness issues regarding getopt()
| author | Carl Byington <carl@five-ten-sg.com> |
|---|---|
| date | Sat, 31 Jan 2009 12:12:36 -0800 |
| parents | 987aa872294e |
| children | bdb38b434c0a |
| rev | line source |
|---|---|
| 16 | 1 /*********************************************************************** |
| 2 * | |
| 3 * Borrowed from WINE sources!! (http://www.winehq.com) | |
| 4 * Converts a Win32 FILETIME structure to a UNIX time_t value | |
| 5 */ | |
| 6 | |
| 7 /*** WARNING **** | |
|
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8 * This file is not to be included in a Visual C++ Project |
| 16 | 9 * It will make the whole project fail to compile |
| 10 * There are functions in libpst.c to handle the dates | |
| 11 * Do not use this one | |
| 12 */ | |
| 13 | |
|
118
0f1492b7fe8b
patch from Fridrich Strba for building on mingw and general cleanup of autoconf files
Carl Byington <carl@five-ten-sg.com>
parents:
75
diff
changeset
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14 #ifndef _WIN32 |
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0f1492b7fe8b
patch from Fridrich Strba for building on mingw and general cleanup of autoconf files
Carl Byington <carl@five-ten-sg.com>
parents:
75
diff
changeset
|
15 |
| 16 | 16 #include <time.h> |
|
118
0f1492b7fe8b
patch from Fridrich Strba for building on mingw and general cleanup of autoconf files
Carl Byington <carl@five-ten-sg.com>
parents:
75
diff
changeset
|
17 #include "define.h" |
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0f1492b7fe8b
patch from Fridrich Strba for building on mingw and general cleanup of autoconf files
Carl Byington <carl@five-ten-sg.com>
parents:
75
diff
changeset
|
18 #include "common.h" |
| 16 | 19 #include "timeconv.h" |
| 20 | |
| 21 char * fileTimeToAscii (const FILETIME *filetime) { | |
| 22 time_t t1; | |
| 23 | |
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cfd6175f9334
Start work on pst2dii to convert to Summation dii load file format.
Carl Byington <carl@five-ten-sg.com>
parents:
59
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changeset
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24 t1 = fileTimeToUnixTime(filetime, NULL); |
| 16 | 25 return ctime(&t1); |
| 26 } | |
| 27 | |
| 28 struct tm * fileTimeToStructTM (const FILETIME *filetime) { | |
| 29 time_t t1; | |
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63
cfd6175f9334
Start work on pst2dii to convert to Summation dii load file format.
Carl Byington <carl@five-ten-sg.com>
parents:
59
diff
changeset
|
30 t1 = fileTimeToUnixTime(filetime, NULL); |
| 16 | 31 return gmtime(&t1); |
| 32 } | |
| 33 | |
| 34 /*********************************************************************** | |
| 35 * DOSFS_FileTimeToUnixTime | |
| 36 * | |
| 37 * Convert a FILETIME format to Unix time. | |
| 38 * If not NULL, 'remainder' contains the fractional part of the filetime, | |
| 39 * in the range of [0..9999999] (even if time_t is negative). | |
| 40 */ | |
| 41 time_t fileTimeToUnixTime( const FILETIME *filetime, DWORD *remainder ) | |
| 42 { | |
| 43 /* Read the comment in the function DOSFS_UnixTimeToFileTime. */ | |
| 44 #if USE_LONG_LONG | |
| 45 | |
| 46 long long int t = filetime->dwHighDateTime; | |
| 47 t <<= 32; | |
| 48 t += (UINT32)filetime->dwLowDateTime; | |
| 49 t -= 116444736000000000LL; | |
| 50 if (t < 0) | |
| 51 { | |
| 52 if (remainder) *remainder = 9999999 - (-t - 1) % 10000000; | |
| 53 return -1 - ((-t - 1) / 10000000); | |
| 54 } | |
| 55 else | |
| 56 { | |
| 57 if (remainder) *remainder = t % 10000000; | |
| 58 return t / 10000000; | |
| 59 } | |
| 60 | |
| 61 #else /* ISO version */ | |
| 62 | |
| 63 UINT32 a0; /* 16 bit, low bits */ | |
| 64 UINT32 a1; /* 16 bit, medium bits */ | |
| 65 UINT32 a2; /* 32 bit, high bits */ | |
| 66 UINT32 r; /* remainder of division */ | |
| 67 unsigned int carry; /* carry bit for subtraction */ | |
| 68 int negative; /* whether a represents a negative value */ | |
| 69 | |
| 70 /* Copy the time values to a2/a1/a0 */ | |
| 71 a2 = (UINT32)filetime->dwHighDateTime; | |
| 72 a1 = ((UINT32)filetime->dwLowDateTime ) >> 16; | |
| 73 a0 = ((UINT32)filetime->dwLowDateTime ) & 0xffff; | |
| 74 | |
| 75 /* Subtract the time difference */ | |
| 76 if (a0 >= 32768 ) a0 -= 32768 , carry = 0; | |
| 77 else a0 += (1 << 16) - 32768 , carry = 1; | |
| 78 | |
| 79 if (a1 >= 54590 + carry) a1 -= 54590 + carry, carry = 0; | |
| 80 else a1 += (1 << 16) - 54590 - carry, carry = 1; | |
| 81 | |
| 82 a2 -= 27111902 + carry; | |
| 46 | 83 |
| 16 | 84 /* If a is negative, replace a by (-1-a) */ |
| 85 negative = (a2 >= ((UINT32)1) << 31); | |
| 86 if (negative) | |
| 87 { | |
| 88 /* Set a to -a - 1 (a is a2/a1/a0) */ | |
| 89 a0 = 0xffff - a0; | |
| 90 a1 = 0xffff - a1; | |
| 91 a2 = ~a2; | |
| 92 } | |
| 93 | |
| 94 /* Divide a by 10000000 (a = a2/a1/a0), put the rest into r. | |
| 95 Split the divisor into 10000 * 1000 which are both less than 0xffff. */ | |
| 96 a1 += (a2 % 10000) << 16; | |
| 97 a2 /= 10000; | |
| 98 a0 += (a1 % 10000) << 16; | |
| 99 a1 /= 10000; | |
| 100 r = a0 % 10000; | |
| 101 a0 /= 10000; | |
| 102 | |
| 103 a1 += (a2 % 1000) << 16; | |
| 104 a2 /= 1000; | |
| 105 a0 += (a1 % 1000) << 16; | |
| 106 a1 /= 1000; | |
| 107 r += (a0 % 1000) * 10000; | |
| 108 a0 /= 1000; | |
| 109 | |
| 110 /* If a was negative, replace a by (-1-a) and r by (9999999 - r) */ | |
| 111 if (negative) | |
| 112 { | |
| 113 /* Set a to -a - 1 (a is a2/a1/a0) */ | |
| 114 a0 = 0xffff - a0; | |
| 115 a1 = 0xffff - a1; | |
| 116 a2 = ~a2; | |
| 117 | |
| 118 r = 9999999 - r; | |
| 119 } | |
| 120 | |
| 121 if (remainder) *remainder = r; | |
| 122 | |
| 123 /* Do not replace this by << 32, it gives a compiler warning and it does | |
| 124 not work. */ | |
| 125 return ((((time_t)a2) << 16) << 16) + (a1 << 16) + a0; | |
| 126 #endif | |
| 127 } | |
|
118
0f1492b7fe8b
patch from Fridrich Strba for building on mingw and general cleanup of autoconf files
Carl Byington <carl@five-ten-sg.com>
parents:
75
diff
changeset
|
128 |
|
0f1492b7fe8b
patch from Fridrich Strba for building on mingw and general cleanup of autoconf files
Carl Byington <carl@five-ten-sg.com>
parents:
75
diff
changeset
|
129 #endif /* !_WIN32 */ |