Merge change 5350 into donut

/*

 * Copyright (C) 2005 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#ifndef ANDROID_TIME_H

#define ANDROID_TIME_H

#include <time.h>

#include <cutils/tztime.h>

#include <stdint.h>

#include <sys/types.h>

#include <sys/time.h>

#include <utils/String8.h>

#include <utils/String16.h>

namespace android {

/*

 * This class is the core implementation of the android.util.Time java

 * class.  It doesn't implement some of the methods that are implemented

 * in Java.  They could be done here, but it's not expected that this class

 * will be used.  If that assumption is incorrect, feel free to update this

 * file.  The reason to do it here is to not mix the implementation of this

 * class and the jni glue code.

 */

class Time

{

public:

    struct tm t;

    // this object doesn't own this string

    const char *timezone;

    enum {

        SEC = 1,

        MIN = 2,

        HOUR = 3,

        MDAY = 4,

        MON = 5,

        YEAR = 6,

        WDAY = 7,

        YDAY = 8

    };

    static int compare(Time& a, Time& b);

    Time();

    void switchTimezone(const char *timezone);

    String8 format(const char *format, const struct strftime_locale *locale) const;

    void format2445(short* buf, bool hasTime) const;

    String8 toString() const;

    void setToNow();

    int64_t toMillis(bool ignoreDst);

    void set(int64_t millis);

    inline void set(int sec, int min, int hour, int mday, int mon, int year,

            int isdst)

    {

        this->t.tm_sec = sec;

        this->t.tm_min = min;

        this->t.tm_hour = hour;

        this->t.tm_mday = mday;

        this->t.tm_mon = mon;

        this->t.tm_year = year;

        this->t.tm_isdst = isdst;

#ifdef HAVE_TM_GMTOFF

        this->t.tm_gmtoff = 0;

#endif

        this->t.tm_wday = 0;

        this->t.tm_yday = 0;

    }

};

}; // namespace android

#endif // ANDROID_TIME_H

	Region.cpp \

	Surface.cpp \

	SurfaceComposerClient.cpp \

	SurfaceFlingerSynchro.cpp \

	Time.cpp

	SurfaceFlingerSynchro.cpp 

LOCAL_SHARED_LIBRARIES := \

	libcorecg \

#include <utils/TimeUtils.h>

#include <stdio.h>

#include <cutils/tztime.h>

namespace android {

static void

dump(const Time& t)

{

    #ifdef HAVE_TM_GMTOFF

        long tm_gmtoff = t.t.tm_gmtoff;

    #else

        long tm_gmtoff = 0;

    #endif

    printf("%04d-%02d-%02d %02d:%02d:%02d (%d,%ld,%d,%d)\n",

            t.t.tm_year+1900, t.t.tm_mon+1, t.t.tm_mday,

            t.t.tm_hour, t.t.tm_min, t.t.tm_sec,

            t.t.tm_isdst, tm_gmtoff, t.t.tm_wday, t.t.tm_yday);

}

Time::Time()

{

    t.tm_sec = 0;

    t.tm_min = 0;

    t.tm_hour = 0;

    t.tm_mday = 0;

    t.tm_mon = 0;

    t.tm_year = 0;

    t.tm_wday = 0;

    t.tm_yday = 0;

    t.tm_isdst = -1; // we don't know, so let the C library determine

    #ifdef HAVE_TM_GMTOFF

        t.tm_gmtoff = 0;

    #endif

}

#define COMPARE_FIELD(field) do { \

        int diff = a.t.field - b.t.field; \

        if (diff != 0) return diff; \

    } while(0)

int

Time::compare(Time& a, Time& b)

{

    if (0 == strcmp(a.timezone, b.timezone)) {

        // if the timezones are the same, we can easily compare the two

        // times.  Otherwise, convert to milliseconds and compare that.

        // This requires that object be normalized.

        COMPARE_FIELD(tm_year);

        COMPARE_FIELD(tm_mon);

        COMPARE_FIELD(tm_mday);

        COMPARE_FIELD(tm_hour);

        COMPARE_FIELD(tm_min);

        COMPARE_FIELD(tm_sec);

        return 0;

    } else {

        int64_t am = a.toMillis(false /* use isDst */);

        int64_t bm = b.toMillis(false /* use isDst */);

        int64_t diff = am-bm;

        return (diff < 0) ? -1 : ((diff > 0) ? 1 : 0);

    }

}

static const int DAYS_PER_MONTH[] = {

                        31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31

                    };

static inline int days_this_month(int year, int month)

{

    int n = DAYS_PER_MONTH[month];

    if (n != 28) {

        return n;

    } else {

        int y = year;

        return ((y%4)==0&&((y%100)!=0||(y%400)==0)) ? 29 : 28;

    }

}

void 

Time::switchTimezone(const char* timezone)

{

    time_t seconds = mktime_tz(&(this->t), this->timezone);

    localtime_tz(&seconds, &(this->t), timezone);

}

String8 

Time::format(const char *format, const struct strftime_locale *locale) const

{

    char buf[257];

    int n = strftime_tz(buf, 257, format, &(this->t), locale);

    if (n > 0) {

        return String8(buf);

    } else {

        return String8();

    }

}

static inline short

tochar(int n)

{

    return (n >= 0 && n <= 9) ? ('0'+n) : ' ';

}

static inline short

next_char(int *m, int k)

{

    int n = *m / k;

    *m = *m % k;

    return tochar(n);

}

void

Time::format2445(short* buf, bool hasTime) const

{

    int n;

    n = t.tm_year+1900;

    buf[0] = next_char(&n, 1000);

    buf[1] = next_char(&n, 100);

    buf[2] = next_char(&n, 10);

    buf[3] = tochar(n);

    n = t.tm_mon+1;

    buf[4] = next_char(&n, 10);

    buf[5] = tochar(n);

    n = t.tm_mday;

    buf[6] = next_char(&n, 10);

    buf[7] = tochar(n);

    if (hasTime) {

      buf[8] = 'T';

      n = t.tm_hour;

      buf[9] = next_char(&n, 10);

      buf[10] = tochar(n);

      n = t.tm_min;

      buf[11] = next_char(&n, 10);

      buf[12] = tochar(n);

      n = t.tm_sec;

      buf[13] = next_char(&n, 10);

      buf[14] = tochar(n);

      bool inUtc = strcmp("UTC", timezone) == 0;

      if (inUtc) {

          buf[15] = 'Z';

      }

    }

}

String8 

Time::toString() const

{

    String8 str;

    char* s = str.lockBuffer(150);

    #ifdef HAVE_TM_GMTOFF

        long tm_gmtoff = t.tm_gmtoff;

    #else

        long tm_gmtoff = 0;

    #endif

    sprintf(s, "%04d%02d%02dT%02d%02d%02d%s(%d,%d,%ld,%d,%d)", 

            t.tm_year+1900, t.tm_mon+1, t.tm_mday, t.tm_hour, t.tm_min,

            t.tm_sec, timezone, t.tm_wday, t.tm_yday, tm_gmtoff, t.tm_isdst,

            (int)(((Time*)this)->toMillis(false /* use isDst */)/1000));

    str.unlockBuffer();

    return str;

}

void 

Time::setToNow()

{

    time_t seconds;

    time(&seconds);

    localtime_tz(&seconds, &(this->t), this->timezone);

}

int64_t 

Time::toMillis(bool ignoreDst)

{

    if (ignoreDst) {

        this->t.tm_isdst = -1;

    }

    int64_t r = mktime_tz(&(this->t), this->timezone);

    if (r == -1)

        return -1;

    return r * 1000;

}

void 

Time::set(int64_t millis)

{

    time_t seconds = millis / 1000;

    localtime_tz(&seconds, &(this->t), this->timezone);

}

}; // namespace android