diff options
Diffstat (limited to 'src/core/basetypes/MCLibetpan.cpp')
| -rw-r--r-- | src/core/basetypes/MCLibetpan.cpp | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/src/core/basetypes/MCLibetpan.cpp b/src/core/basetypes/MCLibetpan.cpp new file mode 100644 index 00000000..51a27430 --- /dev/null +++ b/src/core/basetypes/MCLibetpan.cpp @@ -0,0 +1,223 @@ +// +// MCLibetpan.cpp +// mailcore2 +// +// Created by Hoa Dinh on 6/28/13. +// Copyright (c) 2013 MailCore. All rights reserved. +// + +#include "MCWin32.h" // should be included first. + +#include "MCLibetpan.h" + +#include <libetpan/libetpan.h> + +#include "MCDefines.h" + +using namespace mailcore; + +static time_t mkgmtime(struct tm * tmp); +static int tmcomp(struct tm * atmp, struct tm * btmp); + +INITIALIZE(Libetpan) +{ + // It will enable CFStream on platforms that supports it. + mailstream_cfstream_enabled = 1; +} + +time_t mailcore::timestampFromDate(struct mailimf_date_time * date_time) +{ + struct tm tmval; + time_t timeval; + int zone_min; + int zone_hour; + + tmval.tm_sec = date_time->dt_sec; + tmval.tm_min = date_time->dt_min; + tmval.tm_hour = date_time->dt_hour; + tmval.tm_mday = date_time->dt_day; + tmval.tm_mon = date_time->dt_month - 1; + if (date_time->dt_year < 1000) { + // workaround when century is not given in year + tmval.tm_year = date_time->dt_year + 2000 - 1900; + } + else { + tmval.tm_year = date_time->dt_year - 1900; + } + + timeval = mkgmtime(&tmval); + + if (date_time->dt_zone >= 0) { + zone_hour = date_time->dt_zone / 100; + zone_min = date_time->dt_zone % 100; + } + else { + zone_hour = -((- date_time->dt_zone) / 100); + zone_min = -((- date_time->dt_zone) % 100); + } + timeval -= zone_hour * 3600 + zone_min * 60; + + return timeval; +} + +struct mailimf_date_time * mailcore::dateFromTimestamp(time_t timeval) +{ + struct tm gmt; + struct tm lt; + int off; + struct mailimf_date_time * date_time; + int sign; + int hour; + int min; + + gmtime_r(&timeval, &gmt); + localtime_r(&timeval, <); + + off = (int) ((mkgmtime(<) - mkgmtime(&gmt)) / 60); + if (off < 0) { + sign = -1; + } + else { + sign = 1; + } + off = off * sign; + min = off % 60; + hour = off / 60; + off = hour * 100 + min; + off = off * sign; + + date_time = mailimf_date_time_new(lt.tm_mday, lt.tm_mon + 1, + lt.tm_year + 1900, + lt.tm_hour, lt.tm_min, lt.tm_sec, + off); + + return date_time; +} + +struct mailimap_date_time * mailcore::imapDateFromTimestamp(time_t timeval) +{ + struct tm gmt; + struct tm lt; + int off; + struct mailimap_date_time * date_time; + int sign; + int hour; + int min; + + gmtime_r(&timeval, &gmt); + localtime_r(&timeval, <); + + off = (int) ((mkgmtime(<) - mkgmtime(&gmt)) / 60); + if (off < 0) { + sign = -1; + } + else { + sign = 1; + } + off = off * sign; + min = off % 60; + hour = off / 60; + off = hour * 100 + min; + off = off * sign; + + date_time = mailimap_date_time_new(lt.tm_mday, lt.tm_mon + 1, + lt.tm_year + 1900, + lt.tm_hour, lt.tm_min, lt.tm_sec, + off); + + return date_time; +} + +time_t mailcore::timestampFromIMAPDate(struct mailimap_date_time * date_time) +{ + struct tm tmval; + time_t timeval; + int zone_min; + int zone_hour; + + tmval.tm_sec = date_time->dt_sec; + tmval.tm_min = date_time->dt_min; + tmval.tm_hour = date_time->dt_hour; + tmval.tm_mday = date_time->dt_day; + tmval.tm_mon = date_time->dt_month - 1; + if (date_time->dt_year < 1000) { + // workaround when century is not given in year + tmval.tm_year = date_time->dt_year + 2000 - 1900; + } + else { + tmval.tm_year = date_time->dt_year - 1900; + } + + timeval = mkgmtime(&tmval); + + if (date_time->dt_zone >= 0) { + zone_hour = date_time->dt_zone / 100; + zone_min = date_time->dt_zone % 100; + } + else { + zone_hour = -((- date_time->dt_zone) / 100); + zone_min = -((- date_time->dt_zone) % 100); + } + timeval -= zone_hour * 3600 + zone_min * 60; + + return timeval; +} + +#define INVALID_TIMESTAMP (-1) + +static int tmcomp(struct tm * atmp, struct tm * btmp) +{ + int result; + + if ((result = (atmp->tm_year - btmp->tm_year)) == 0 && + (result = (atmp->tm_mon - btmp->tm_mon)) == 0 && + (result = (atmp->tm_mday - btmp->tm_mday)) == 0 && + (result = (atmp->tm_hour - btmp->tm_hour)) == 0 && + (result = (atmp->tm_min - btmp->tm_min)) == 0) + result = atmp->tm_sec - btmp->tm_sec; + return result; +} + +static time_t mkgmtime(struct tm * tmp) +{ + int dir; + int bits; + int saved_seconds; + time_t t; + struct tm yourtm, mytm; + + yourtm = *tmp; + saved_seconds = yourtm.tm_sec; + yourtm.tm_sec = 0; + /* + ** Calculate the number of magnitude bits in a time_t + ** (this works regardless of whether time_t is + ** signed or unsigned, though lint complains if unsigned). + */ + for (bits = 0, t = 1; t > 0; ++bits, t <<= 1) + ; + /* + ** If time_t is signed, then 0 is the median value, + ** if time_t is unsigned, then 1 << bits is median. + */ + if(bits > 40) bits = 40; + t = (t < 0) ? 0 : ((time_t) 1 << bits); + for ( ; ; ) { + gmtime_r(&t, &mytm); + dir = tmcomp(&mytm, &yourtm); + if (dir != 0) { + if (bits-- < 0) { + return INVALID_TIMESTAMP; + } + if (bits < 0) + --t; + else if (dir > 0) + t -= (time_t) 1 << bits; + else t += (time_t) 1 << bits; + continue; + } + break; + } + t += saved_seconds; + return t; +} |