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path: root/lib/st-decode.cc
authorMichael Krelin <hacker@klever.net>2009-12-12 00:21:52 (UTC)
committer Michael Krelin <hacker@klever.net>2009-12-12 00:21:52 (UTC)
commit29ab361797d5677ce3296555efa7fe34dedaf0d4 (patch) (side-by-side diff)
treef0b328c790ddb405e56aa4c1653a73cbadd8135f /lib/st-decode.cc
parentf888c15a5df36dcd767823cf5c223540270524c3 (diff)
downloadnapkin-master.zip
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headers for gcc 4.4HEADmaster
Thanks to Kevin Turner for spotting and patching it.
Diffstat (limited to 'lib/st-decode.cc') (more/less context) (ignore whitespace changes)
-rw-r--r--lib/st-decode.cc5
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/st-decode.cc b/lib/st-decode.cc
index b354250..81cbb8f 100644
--- a/lib/st-decode.cc
+++ b/lib/st-decode.cc
@@ -1,98 +1,99 @@
-#include <stdlib.h>
-#include <string.h>
+#include <stdint.h>
+#include <cstdlib>
+#include <cstring>
#include <stdexcept>
#include <numeric>
#include <napkin/exception.h>
#include <napkin/st/decode.h>
namespace napkin {
namespace sleeptracker {
using std::invalid_argument;
using std::runtime_error;
struct st_time_t {
uint8_t hour;
uint8_t min;
};
struct st_date_t {
uint8_t month;
uint8_t day;
uint8_t dow;
};
struct st_fulltime_t {
uint8_t hour;
uint8_t min;
uint8_t sec;
};
struct st_data_header_t {
char magic;
st_date_t today;
uint8_t window;
st_time_t to_bed;
st_time_t alarm;
uint8_t nawakes;
};
struct st_data_footer_t {
uint16_t data_a;
uint8_t checksum;
uint8_t eof_mark;
};
static void back_a_day(struct tm& t) {
time_t ts = mktime(&t);
if(ts==(time_t)-1)
throw exception_st_data("failed to make up time to step back a day");
ts -= 60*60*24;
if(!localtime_r(&ts,&t))
throw exception_st_data("failed to localtime_r() while stepping back a day");
}
hypnodata_t& decode(hypnodata_t& rv,const void *data,size_t data_length) {
if(data_length < (sizeof(st_data_header_t)+sizeof(st_data_footer_t)))
throw exception_st_data_envelope("not enough sleeptracker data to decode");
st_data_header_t *h = (st_data_header_t*)data;
if(h->magic != 'V')
throw exception_st_data_envelope("invalid magic in the data");
st_data_footer_t *f = (st_data_footer_t*)(static_cast<const char *>(data)+data_length-sizeof(st_data_footer_t));
if( (std::accumulate((uint8_t*)&h->today,(uint8_t*)&f->checksum,0)&0xFF) != f->checksum )
throw exception_st_data_integrity("checksum mismatch");
st_fulltime_t *aawake = (st_fulltime_t*)&h[1];
if((void*)&aawake[h->nawakes] != (void*)f)
throw exception_st_data_envelope("unbelievably screwed up data");
rv.clear();
time_t now = time(0);
struct tm t;
if(!localtime_r(&now,&t))
throw exception_st_data("failed to localtime_r()");
t.tm_mon = h->today.month-1;
t.tm_mday = h->today.day;
time_t mkt = mktime(&t);
if(mkt == (time_t)-1)
throw exception_st_data("failed to mktime() for a timestamp");
if(mkt > now) {
--t.tm_year;
}
struct tm ta;
memmove(&ta,&t,sizeof(ta));
ta.tm_sec = 0;
ta.tm_hour = h->alarm.hour; ta.tm_min = h->alarm.min;
rv.alarm = mktime(&ta);
if(rv.alarm == (time_t)-1)
throw exception_st_data("failed to mktime() for alarm");
struct tm tb;
memmove(&tb,&ta,sizeof(tb));
tb.tm_hour = h->to_bed.hour; tb.tm_min = h->to_bed.min;
rv.to_bed = mktime(&tb);
if(rv.to_bed == (time_t)-1)
throw exception_st_data("failed to mktime() for 'to bed'");
if(rv.to_bed > rv.alarm) {
back_a_day(tb);
rv.to_bed -= 24*60*60;
}
struct tm taaw;
memmove(&taaw,&tb,sizeof(taaw));
for(int rest=h->nawakes;rest;--rest,++aawake) {
if(
taaw.tm_mday!=ta.tm_mday
&& (
aawake->hour < tb.tm_hour