php date 함수 를 c 로..
글쓴이: acidd15 / 작성시간: 금, 2005/03/18 - 2:30오후
joinc에 올렸던 건데..
뭐..제가 100%만들었다기 보단 php의 date함수의 소스를 좀 참고해서 베낀겁니다.ㅋ..작동법은 php의 date함수의 사용법과 비슷한데 몇가지는 지원하지 않습니다.추가해서 쓰실분들은 추가해서 쓰십시요.
#include <stdio.h>
#include <time.h>
#include <sys/time.h>
char *mon_full[12] = {
"January", "February", "March", "April",
"May", "June", "July", "August",
"September", "October", "November", "December"
};
char *mon_short[12] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
char *day_full[7] = {
"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
};
char *day_short[7]={
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
};
#define isleap(year) ((((year) % 4) == 0 && ((year) % 100) != 0) || ((year) % 400)==0)
#define YEAR_BASE 1900
static int day_tab[2][12] = {
{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
{31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}
};
int date(char *,long int ,char **);
int date(char *format,long int timestamp,char **ret){
char buf[11]={0};
char *ret_tmp;
char chr;
int cnt=0;
int mem_size=0,str_len=0;
int num_tmp=0,wd,yd,fd,wk;
struct tm *tm_date;
time_t time_date;
if(timestamp<0){
time_date=time(NULL);
}else{
time_date=timestamp;
}
while((chr=*(format+cnt))){
switch(chr){
case '\\':
++cnt;
++mem_size;
break;
case 'U':
mem_size+=10;
break;
case 'Y':
mem_size+=4;
break;
case 'B':
case 'D':
case 'M':
mem_size+=3;
break;
case 'l':
case 'F':
mem_size+=9;//l Wednesday,F September
break;
case 'g':
case 'G':
case 'h':
case 'm':
case 'd':
case 'H':
case 'i':
case 'j':
case 's':
case 'A':
case 'a':
case 'n':
case 't':
case 'W':
case 'y':
case 'z':
mem_size+=2;
break;
case 'I':
case 'L':
case 'w':
default:
++mem_size;
break;
}
++cnt;
}
(*ret)=(char *)malloc(sizeof(char)*mem_size+1);
memset((*ret),0x0,sizeof(char)*mem_size+1);
ret_tmp=(*ret);
cnt=0;
tm_date=gmtime((time_t *)&time_date);
while((chr=*(format+cnt))){
switch(chr){
case '\\':
++cnt;
*(*ret)=*(format+cnt);
++(*ret);
break;
case 'U':
sprintf(buf,"%ld",time_date);
str_len=strlen(buf);
memcpy((*ret),buf,str_len);
(*ret)+=str_len;
break;
case 'Y':
sprintf(buf,"%04d",(tm_date->tm_year)+YEAR_BASE);
memcpy((*ret),buf,4);
(*ret)+=4;
break;
case 'B':
num_tmp=(((((long)time_date)-(((long)time_date)-
((((long)time_date)%86400)+3600)))*10)/864);
while(num_tmp<0){
num_tmp+=1000;
}
num_tmp=num_tmp%1000;
sprintf(buf,"%03d",num_tmp);
memcpy((*ret),buf,3);
(*ret)+=3;
break;
case 'D':
memcpy((*ret),day_short[tm_date->tm_wday],3);
(*ret)+=3;
break;
case 'M':
memcpy((*ret),mon_short[tm_date->tm_mon],3);
(*ret)+=3;
break;
case 'l':
str_len=strlen(day_full[tm_date->tm_wday]);
memcpy((*ret),day_full[tm_date->tm_wday],str_len);
(*ret)+=str_len;
break;
case 'F':
str_len=strlen(mon_full[tm_date->tm_mon]);
memcpy((*ret),mon_full[tm_date->tm_mon],str_len);
(*ret)+=str_len;
break;
case 'g':
num_tmp=tm_date->tm_hour%12;
if(num_tmp==0) num_tmp=12;
sprintf(buf,"%d",num_tmp);
str_len=strlen(buf);
memcpy((*ret),buf,str_len);
(*ret)+=str_len;
break;
case 'G':
sprintf(buf,"%d",tm_date->tm_hour);
str_len=strlen(buf);
memcpy((*ret),buf,str_len);
(*ret)+=str_len;
break;
case 'h':
num_tmp=tm_date->tm_hour%12;
if(num_tmp==0) num_tmp=12;
sprintf(buf,"%02d",num_tmp);
str_len=strlen(buf);
memcpy((*ret),buf,str_len);
(*ret)+=2;
break;
case 'm':
sprintf(buf,"%02d",(tm_date->tm_mon)+1);
memcpy((*ret),buf,2);
(*ret)+=2;
break;
case 'd':
sprintf(buf,"%02d",tm_date->tm_mday);
memcpy((*ret),buf,2);
(*ret)+=2;
break;
case 'H':
sprintf(buf,"%02d",tm_date->tm_hour);
memcpy((*ret),buf,2);
(*ret)+=2;
break;
case 'i':
sprintf(buf,"%02d",tm_date->tm_min);
memcpy((*ret),buf,2);
(*ret)+=2;
break;
case 'j':
sprintf(buf,"%d",tm_date->tm_mday);
str_len=strlen(buf);
memcpy((*ret),buf,str_len);
(*ret)+=str_len;
break;
case 's':
sprintf(buf,"%02d",tm_date->tm_sec);
memcpy((*ret),buf,2);
(*ret)+=2;
break;
case 'A':
memcpy((*ret),(tm_date->tm_hour>=12 ? "PM" : "AM"),2);
(*ret)+=2;
break;
case 'a':
memcpy((*ret),(tm_date->tm_hour>=12 ? "pm" : "am"),2);
(*ret)+=2;
break;
case 'n':
sprintf(buf,"%d",(tm_date->tm_mon)+1);
str_len=strlen(buf);
memcpy((*ret),buf,str_len);
(*ret)+=str_len;
break;
case 't':
sprintf(buf,"%d",day_tab[isleap((tm_date->tm_year+YEAR_BASE))][tm_date->tm_mon]);
memcpy((*ret),buf,2);
(*ret)+=2;
break;
case 'W':
wd=(tm_date->tm_wday==0 ? 6 : tm_date->tm_wday-1); /* weekday */
yd=tm_date->tm_yday+1; /* days since January 1st */
fd=(7+wd-yd%7+1)%7; /* weekday (1st January) */
/* week is a last year week (52 or 53) */
if((yd<=7-fd)&&fd>3){
wk=((fd==4||(fd==5&&isleap((tm_date->tm_year+YEAR_BASE-1)))) ? 53 : 52);
}
/* week is a next year week (1) */
else if(isleap((tm_date->tm_year+YEAR_BASE))+365-yd<3-wd){
wk=1;
}
/* normal week */
else{
wk=(yd+6-wd+fd)/7-(fd>3);
}
sprintf(buf,"%d",wk); /* SAFE */
str_len=strlen(buf);
memcpy((*ret),buf,str_len);
(*ret)+=str_len;
break;
case 'y':
sprintf(buf,"%02d",((tm_date->tm_year)%100));
memcpy((*ret),buf,2);
(*ret)+=2;
break;
case 'z':
sprintf(buf,"%d",tm_date->tm_yday);
str_len=strlen(buf);
memcpy((*ret),buf,str_len);
(*ret)+=str_len;
break;
case 'I':
sprintf(buf,"%d",tm_date->tm_isdst);
memcpy((*ret),buf,1);
++(*ret);
break;
case 'L':
sprintf(buf,"%d",(isleap((tm_date->tm_year+YEAR_BASE)) ? 1 : 0));
memcpy((*ret),buf,1);
++(*ret);
break;
case 'w':
sprintf(buf,"%d",tm_date->tm_wday);
memcpy((*ret),buf,1);
++(*ret);
break;
default:
*(*ret)=chr;
++(*ret);
break;
}
++cnt;
}
(*ret)=ret_tmp;
return 0;
}
EXAMPLE CODE BELOW
#include <stdio.h>
#include <date.h>
int main(int argc,char **argv){
char *format="\\suppor\\te\\d \\l\\e\\t\\t\\er\\s : \\Y\\m\\d\\H\\i\\s\\A\\a\\B\\D\\l\\F\\g\\G\\h\\I\\j\\L\\M\\n\\t\\w\\W\\U\\y\\Z \n\\ex\\a\\mp\\l\\e\\s : Y년 m월 d일 (A/a) H시 i분 s초 D l B F g G h I j L M n t w W U y z";
char *ret=NULL;
date(format,-1,&ret);
printf("%s\n",ret);
free(ret);
return 0;
}
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