diff options
Diffstat (limited to 'call/dostime.c')
| -rw-r--r-- | call/dostime.c | 79 |
1 files changed, 43 insertions, 36 deletions
diff --git a/call/dostime.c b/call/dostime.c index f162010..defbaf4 100644 --- a/call/dostime.c +++ b/call/dostime.c @@ -14,72 +14,79 @@ /* Linear day numbers of the respective 1sts in non-leap years. */ -static int day_n[] = { 0,31,59,90,120,151,181,212,243,273,304,334,0,0,0,0 }; +static int day_n[] = + { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0 }; /* JanFebMarApr May Jun Jul Aug Sep Oct Nov Dec */ /* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */ -int date_dos2unix(unsigned short time,unsigned short date) +int date_dos2unix(unsigned short time, unsigned short date) { - int month,year,secs; + int month, year, secs; - month = ((date >> 5) & 15)-1; + month = ((date >> 5) & 15) - 1; year = date >> 9; - secs = (time & 31)*2+60*((time >> 5) & 63)+(time >> 11)*3600+86400* - ((date & 31)-1+day_n[month]+(year/4)+year*365-((year & 3) == 0 && - month < 2 ? 1 : 0)+3653); - /* days since 1.1.70 plus 80's leap day */ + secs = + (time & 31) * 2 + 60 * ((time >> 5) & 63) + + (time >> 11) * 3600 + 86400 * ((date & 31) - 1 + day_n[month] + + (year / 4) + year * 365 - + ((year & 3) == 0 + && month < 2 ? 1 : 0) + 3653); + /* days since 1.1.70 plus 80's leap day */ return secs; } /* Convert linear UNIX date to a MS-DOS time/date pair. */ -void date_unix2dos(int unix_date,unsigned short *time, - unsigned short *date) +void date_unix2dos(int unix_date, unsigned short *time, + unsigned short *date) { - int day,year,nl_day,month; - - *time = (unix_date % 60)/2+(((unix_date/60) % 60) << 5)+ - (((unix_date/3600) % 24) << 11); - day = unix_date/86400-3652; - year = day/365; - if ((year+3)/4+365*year > day) year--; - day -= (year+3)/4+365*year; + int day, year, nl_day, month; + + *time = (unix_date % 60) / 2 + (((unix_date / 60) % 60) << 5) + + (((unix_date / 3600) % 24) << 11); + day = unix_date / 86400 - 3652; + year = day / 365; + if ((year + 3) / 4 + 365 * year > day) + year--; + day -= (year + 3) / 4 + 365 * year; if (day == 59 && !(year & 3)) { nl_day = day; month = 2; - } - else { - nl_day = (year & 3) || day <= 59 ? day : day-1; + } else { + nl_day = (year & 3) || day <= 59 ? day : day - 1; for (month = 0; month < 12; month++) - if (day_n[month] > nl_day) break; + if (day_n[month] > nl_day) + break; } - *date = nl_day-day_n[month-1]+1+(month << 5)+(year << 9); + *date = nl_day - day_n[month - 1] + 1 + (month << 5) + (year << 9); } /* Convert yapp format 8 hex characters into Unix time */ -int yapp2unix(char * ytime) +int yapp2unix(char *ytime) { int i; - unsigned short time,date; - if(strlen(ytime)!=8) return 0; - for(i=0;i<8;i++) if(!isxdigit(ytime[i])) return 0; - time = strtoul(ytime+4,(char **)NULL,16); - ytime[4]=0; - date = strtoul(ytime,(char **)NULL,16); - return(date_dos2unix(time,date)); + unsigned short time, date; + if (strlen(ytime) != 8) + return 0; + for (i = 0; i < 8; i++) + if (!isxdigit(ytime[i])) + return 0; + time = strtoul(ytime + 4, (char **) NULL, 16); + ytime[4] = 0; + date = strtoul(ytime, (char **) NULL, 16); + return (date_dos2unix(time, date)); } /* Convert unix time to 8 character yapp hex format */ -void unix2yapp(int unix_date, char * buffer) +void unix2yapp(int unix_date, char *buffer) { - unsigned short time,date; - date_unix2dos(unix_date,&time,&date); - sprintf(buffer,"%04X%04X",date,time); + unsigned short time, date; + date_unix2dos(unix_date, &time, &date); + sprintf(buffer, "%04X%04X", date, time); } - |