src/kits/network/libnetapi/HttpTime.cpp

   1 /*
   2  * Copyright 2010 Haiku Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Christophe Huriaux, c.huriaux@gmail.com
   7  */
   8
   9 #include <HttpTime.h>
  10
  11 #include <new>
  12
  13 #include <cstdio>
  14
  15
  16 static const char* kDateFormats[] = {
  17         "%a, %d %b %Y %H:%M:%S",
  18         "%a, %d-%b-%Y %H:%M:%S",
  19         "%A, %d-%b-%y %H:%M:%S",
  20         "%a %d %b %H:%M:%S %Y"
  21 };
  22
  23 using namespace BPrivate;
  24
  25
  26 BHttpTime::BHttpTime()
  27         :
  28         fDate(0),
  29         fDateFormat(B_HTTP_TIME_FORMAT_PREFERRED)
  30 {
  31 }
  32
  33
  34 BHttpTime::BHttpTime(BDateTime date)
  35         :
  36         fDate(date),
  37         fDateFormat(B_HTTP_TIME_FORMAT_PREFERRED)
  38 {
  39 }
  40
  41
  42 BHttpTime::BHttpTime(const BString& dateString)
  43         :
  44         fDateString(dateString),
  45         fDate(0),
  46         fDateFormat(B_HTTP_TIME_FORMAT_PREFERRED)
  47 {
  48 }
  49
  50
  51 // #pragma mark Date modification
  52
  53
  54 void
  55 BHttpTime::SetString(const BString& string)
  56 {
  57         fDateString = string;
  58 }
  59
  60
  61 void
  62 BHttpTime::SetDate(BDateTime date)
  63 {
  64         fDate = date;
  65 }
  66
  67
  68 // #pragma mark Date conversion
  69
  70
  71 BDateTime
  72 BHttpTime::Parse()
  73 {
  74         struct tm expireTime;
  75
  76         if (fDateString.Length() < 4)
  77                 return 0;
  78
  79         expireTime.tm_sec = 0;
  80         expireTime.tm_min = 0;
  81         expireTime.tm_hour = 0;
  82         expireTime.tm_mday = 0;
  83         expireTime.tm_mon = 0;
  84         expireTime.tm_year = 0;
  85         expireTime.tm_wday = 0;
  86         expireTime.tm_yday = 0;
  87         expireTime.tm_isdst = 0;
  88
  89         fDateFormat = B_HTTP_TIME_FORMAT_PARSED;
  90         unsigned int i;
  91         for (i = 0; i < sizeof(kDateFormats) / sizeof(const char*);
  92                 i++) {
  93                 const char* result = strptime(fDateString.String(), kDateFormats[i],
  94                         &expireTime);
  95
  96                 // Make sure we parsed enough of the date string, not just a small
  97                 // part of it.
  98                 if (result != NULL && result > fDateString.String() + 24) {
  99                         fDateFormat = i;
 100                         break;
 101                 }
 102         }
 103
 104         if (fDateFormat == B_HTTP_TIME_FORMAT_PARSED)
 105                 return 0;
 106
 107         BTime time(expireTime.tm_hour, expireTime.tm_min, expireTime.tm_sec);
 108         BDate date(expireTime.tm_year + 1900, expireTime.tm_mon + 1,
 109                 expireTime.tm_mday);
 110         BDateTime dateTime(date, time);
 111         return dateTime;
 112 }
 113
 114
 115 BString
 116 BHttpTime::ToString(int8 format)
 117 {
 118         BString expirationFinal;
 119         struct tm expirationTm;
 120         expirationTm.tm_sec = fDate.Time().Second();
 121         expirationTm.tm_min = fDate.Time().Minute();
 122         expirationTm.tm_hour = fDate.Time().Hour();
 123         expirationTm.tm_mday = fDate.Date().Day();
 124         expirationTm.tm_mon = fDate.Date().Month() - 1;
 125         expirationTm.tm_year = fDate.Date().Year() - 1900;
 126         expirationTm.tm_wday = 0;
 127         expirationTm.tm_yday = 0;
 128         expirationTm.tm_isdst = 0;
 129
 130         if (format == B_HTTP_TIME_FORMAT_PARSED)
 131                 format = fDateFormat;
 132
 133         if (format != B_HTTP_TIME_FORMAT_PARSED) {
 134                 static const uint16 kTimetToStringMaxLength = 128;
 135                 char expirationString[kTimetToStringMaxLength + 1];
 136                 size_t strLength;
 137
 138                 strLength = strftime(expirationString, kTimetToStringMaxLength,
 139                         kDateFormats[format], &expirationTm);
 140
 141                 expirationFinal.SetTo(expirationString, strLength);
 142         }
 143         return expirationFinal;
 144 }