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-rw-r--r--fpdfsdk/cpdfsdk_datetime.cpp405
1 files changed, 405 insertions, 0 deletions
diff --git a/fpdfsdk/cpdfsdk_datetime.cpp b/fpdfsdk/cpdfsdk_datetime.cpp
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+++ b/fpdfsdk/cpdfsdk_datetime.cpp
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+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "fpdfsdk/include/cpdfsdk_datetime.h"
+
+#include "core/fxcrt/include/fx_ext.h"
+
+namespace {
+
+int GetTimeZoneInSeconds(int8_t tzhour, uint8_t tzminute) {
+ return (int)tzhour * 3600 + (int)tzminute * (tzhour >= 0 ? 60 : -60);
+}
+
+bool IsLeapYear(int16_t year) {
+ return ((year % 400 == 0) || ((year % 4 == 0) && (year % 100 != 0)));
+}
+
+uint16_t GetYearDays(int16_t year) {
+ return (IsLeapYear(year) ? 366 : 365);
+}
+
+uint8_t GetMonthDays(int16_t year, uint8_t month) {
+ uint8_t mDays;
+ switch (month) {
+ case 1:
+ case 3:
+ case 5:
+ case 7:
+ case 8:
+ case 10:
+ case 12:
+ mDays = 31;
+ break;
+
+ case 4:
+ case 6:
+ case 9:
+ case 11:
+ mDays = 30;
+ break;
+
+ case 2:
+ if (IsLeapYear(year))
+ mDays = 29;
+ else
+ mDays = 28;
+ break;
+
+ default:
+ mDays = 0;
+ break;
+ }
+
+ return mDays;
+}
+
+} // namespace
+
+CPDFSDK_DateTime::CPDFSDK_DateTime() {
+ ResetDateTime();
+}
+
+CPDFSDK_DateTime::CPDFSDK_DateTime(const CFX_ByteString& dtStr) {
+ ResetDateTime();
+
+ FromPDFDateTimeString(dtStr);
+}
+
+CPDFSDK_DateTime::CPDFSDK_DateTime(const CPDFSDK_DateTime& datetime) {
+ FXSYS_memcpy(&dt, &datetime.dt, sizeof(FX_DATETIME));
+}
+
+CPDFSDK_DateTime::CPDFSDK_DateTime(const FX_SYSTEMTIME& st) {
+ tzset();
+
+ dt.year = static_cast<int16_t>(st.wYear);
+ dt.month = static_cast<uint8_t>(st.wMonth);
+ dt.day = static_cast<uint8_t>(st.wDay);
+ dt.hour = static_cast<uint8_t>(st.wHour);
+ dt.minute = static_cast<uint8_t>(st.wMinute);
+ dt.second = static_cast<uint8_t>(st.wSecond);
+}
+
+void CPDFSDK_DateTime::ResetDateTime() {
+ tzset();
+
+ time_t curTime;
+ time(&curTime);
+ struct tm* newtime = localtime(&curTime);
+
+ dt.year = newtime->tm_year + 1900;
+ dt.month = newtime->tm_mon + 1;
+ dt.day = newtime->tm_mday;
+ dt.hour = newtime->tm_hour;
+ dt.minute = newtime->tm_min;
+ dt.second = newtime->tm_sec;
+}
+
+bool CPDFSDK_DateTime::operator==(const CPDFSDK_DateTime& datetime) const {
+ return (FXSYS_memcmp(&dt, &datetime.dt, sizeof(FX_DATETIME)) == 0);
+}
+
+bool CPDFSDK_DateTime::operator!=(const CPDFSDK_DateTime& datetime) const {
+ return !(*this == datetime);
+}
+
+time_t CPDFSDK_DateTime::ToTime_t() const {
+ struct tm newtime;
+
+ newtime.tm_year = dt.year - 1900;
+ newtime.tm_mon = dt.month - 1;
+ newtime.tm_mday = dt.day;
+ newtime.tm_hour = dt.hour;
+ newtime.tm_min = dt.minute;
+ newtime.tm_sec = dt.second;
+
+ return mktime(&newtime);
+}
+
+CPDFSDK_DateTime& CPDFSDK_DateTime::FromPDFDateTimeString(
+ const CFX_ByteString& dtStr) {
+ int strLength = dtStr.GetLength();
+ if (strLength <= 0)
+ return *this;
+
+ int i = 0;
+ while (i < strLength && !std::isdigit(dtStr[i]))
+ ++i;
+
+ if (i >= strLength)
+ return *this;
+
+ int j = 0;
+ int k = 0;
+ FX_CHAR ch;
+ while (i < strLength && j < 4) {
+ ch = dtStr[i];
+ k = k * 10 + FXSYS_toDecimalDigit(ch);
+ j++;
+ if (!std::isdigit(ch))
+ break;
+ i++;
+ }
+ dt.year = static_cast<int16_t>(k);
+ if (i >= strLength || j < 4)
+ return *this;
+
+ j = 0;
+ k = 0;
+ while (i < strLength && j < 2) {
+ ch = dtStr[i];
+ k = k * 10 + FXSYS_toDecimalDigit(ch);
+ j++;
+ if (!std::isdigit(ch))
+ break;
+ i++;
+ }
+ dt.month = static_cast<uint8_t>(k);
+ if (i >= strLength || j < 2)
+ return *this;
+
+ j = 0;
+ k = 0;
+ while (i < strLength && j < 2) {
+ ch = dtStr[i];
+ k = k * 10 + FXSYS_toDecimalDigit(ch);
+ j++;
+ if (!std::isdigit(ch))
+ break;
+ i++;
+ }
+ dt.day = static_cast<uint8_t>(k);
+ if (i >= strLength || j < 2)
+ return *this;
+
+ j = 0;
+ k = 0;
+ while (i < strLength && j < 2) {
+ ch = dtStr[i];
+ k = k * 10 + FXSYS_toDecimalDigit(ch);
+ j++;
+ if (!std::isdigit(ch))
+ break;
+ i++;
+ }
+ dt.hour = static_cast<uint8_t>(k);
+ if (i >= strLength || j < 2)
+ return *this;
+
+ j = 0;
+ k = 0;
+ while (i < strLength && j < 2) {
+ ch = dtStr[i];
+ k = k * 10 + FXSYS_toDecimalDigit(ch);
+ j++;
+ if (!std::isdigit(ch))
+ break;
+ i++;
+ }
+ dt.minute = static_cast<uint8_t>(k);
+ if (i >= strLength || j < 2)
+ return *this;
+
+ j = 0;
+ k = 0;
+ while (i < strLength && j < 2) {
+ ch = dtStr[i];
+ k = k * 10 + FXSYS_toDecimalDigit(ch);
+ j++;
+ if (!std::isdigit(ch))
+ break;
+ i++;
+ }
+ dt.second = static_cast<uint8_t>(k);
+ if (i >= strLength || j < 2)
+ return *this;
+
+ ch = dtStr[i++];
+ if (ch != '-' && ch != '+')
+ return *this;
+ if (ch == '-')
+ dt.tzHour = -1;
+ else
+ dt.tzHour = 1;
+ j = 0;
+ k = 0;
+ while (i < strLength && j < 2) {
+ ch = dtStr[i];
+ k = k * 10 + FXSYS_toDecimalDigit(ch);
+ j++;
+ if (!std::isdigit(ch))
+ break;
+ i++;
+ }
+ dt.tzHour *= static_cast<int8_t>(k);
+ if (i >= strLength || j < 2)
+ return *this;
+
+ if (dtStr[i++] != '\'')
+ return *this;
+ j = 0;
+ k = 0;
+ while (i < strLength && j < 2) {
+ ch = dtStr[i];
+ k = k * 10 + FXSYS_toDecimalDigit(ch);
+ j++;
+ if (!std::isdigit(ch))
+ break;
+ i++;
+ }
+ dt.tzMinute = static_cast<uint8_t>(k);
+ return *this;
+}
+
+CFX_ByteString CPDFSDK_DateTime::ToCommonDateTimeString() {
+ CFX_ByteString str1;
+ str1.Format("%04d-%02u-%02u %02u:%02u:%02u ", dt.year, dt.month, dt.day,
+ dt.hour, dt.minute, dt.second);
+ if (dt.tzHour < 0)
+ str1 += "-";
+ else
+ str1 += "+";
+ CFX_ByteString str2;
+ str2.Format("%02d:%02u", std::abs(static_cast<int>(dt.tzHour)), dt.tzMinute);
+ return str1 + str2;
+}
+
+CFX_ByteString CPDFSDK_DateTime::ToPDFDateTimeString() {
+ CFX_ByteString dtStr;
+ char tempStr[32];
+ memset(tempStr, 0, sizeof(tempStr));
+ FXSYS_snprintf(tempStr, sizeof(tempStr) - 1, "D:%04d%02u%02u%02u%02u%02u",
+ dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second);
+ dtStr = CFX_ByteString(tempStr);
+ if (dt.tzHour < 0)
+ dtStr += CFX_ByteString("-");
+ else
+ dtStr += CFX_ByteString("+");
+ memset(tempStr, 0, sizeof(tempStr));
+ FXSYS_snprintf(tempStr, sizeof(tempStr) - 1, "%02d'%02u'",
+ std::abs(static_cast<int>(dt.tzHour)), dt.tzMinute);
+ dtStr += CFX_ByteString(tempStr);
+ return dtStr;
+}
+
+void CPDFSDK_DateTime::ToSystemTime(FX_SYSTEMTIME& st) {
+ time_t t = this->ToTime_t();
+ struct tm* pTime = localtime(&t);
+
+ if (!pTime)
+ return;
+
+ st.wYear = static_cast<uint16_t>(pTime->tm_year) + 1900;
+ st.wMonth = static_cast<uint16_t>(pTime->tm_mon) + 1;
+ st.wDay = static_cast<uint16_t>(pTime->tm_mday);
+ st.wDayOfWeek = static_cast<uint16_t>(pTime->tm_wday);
+ st.wHour = static_cast<uint16_t>(pTime->tm_hour);
+ st.wMinute = static_cast<uint16_t>(pTime->tm_min);
+ st.wSecond = static_cast<uint16_t>(pTime->tm_sec);
+ st.wMilliseconds = 0;
+}
+
+CPDFSDK_DateTime CPDFSDK_DateTime::ToGMT() const {
+ CPDFSDK_DateTime new_dt = *this;
+ new_dt.AddSeconds(
+ -GetTimeZoneInSeconds(new_dt.dt.tzHour, new_dt.dt.tzMinute));
+ new_dt.dt.tzHour = 0;
+ new_dt.dt.tzMinute = 0;
+ return new_dt;
+}
+
+CPDFSDK_DateTime& CPDFSDK_DateTime::AddDays(short days) {
+ if (days == 0)
+ return *this;
+
+ int16_t y = dt.year;
+ uint8_t m = dt.month;
+ uint8_t d = dt.day;
+
+ int ldays = days;
+ if (ldays > 0) {
+ int16_t yy = y;
+ if ((static_cast<uint16_t>(m) * 100 + d) > 300)
+ yy++;
+ int ydays = GetYearDays(yy);
+ int mdays;
+ while (ldays >= ydays) {
+ y++;
+ ldays -= ydays;
+ yy++;
+ mdays = GetMonthDays(y, m);
+ if (d > mdays) {
+ m++;
+ d -= mdays;
+ }
+ ydays = GetYearDays(yy);
+ }
+ mdays = GetMonthDays(y, m) - d + 1;
+ while (ldays >= mdays) {
+ ldays -= mdays;
+ m++;
+ d = 1;
+ mdays = GetMonthDays(y, m);
+ }
+ d += ldays;
+ } else {
+ ldays *= -1;
+ int16_t yy = y;
+ if ((static_cast<uint16_t>(m) * 100 + d) < 300)
+ yy--;
+ int ydays = GetYearDays(yy);
+ while (ldays >= ydays) {
+ y--;
+ ldays -= ydays;
+ yy--;
+ int mdays = GetMonthDays(y, m);
+ if (d > mdays) {
+ m++;
+ d -= mdays;
+ }
+ ydays = GetYearDays(yy);
+ }
+ while (ldays >= d) {
+ ldays -= d;
+ m--;
+ d = GetMonthDays(y, m);
+ }
+ d -= ldays;
+ }
+
+ dt.year = y;
+ dt.month = m;
+ dt.day = d;
+
+ return *this;
+}
+
+CPDFSDK_DateTime& CPDFSDK_DateTime::AddSeconds(int seconds) {
+ if (seconds == 0)
+ return *this;
+
+ int n;
+ int days;
+
+ n = dt.hour * 3600 + dt.minute * 60 + dt.second + seconds;
+ if (n < 0) {
+ days = (n - 86399) / 86400;
+ n -= days * 86400;
+ } else {
+ days = n / 86400;
+ n %= 86400;
+ }
+ dt.hour = static_cast<uint8_t>(n / 3600);
+ dt.hour %= 24;
+ n %= 3600;
+ dt.minute = static_cast<uint8_t>(n / 60);
+ dt.second = static_cast<uint8_t>(n % 60);
+ if (days != 0)
+ AddDays(days);
+
+ return *this;
+}
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