#include <u.h>#include <libc.h>#include <bio.h>#include <ctype.h> extern Biobuf kbin; char*strtime(void){	static char buf[6];	Tm *tm; 	tm = localtime(time(nil));	sprint(buf, "%02d:%02d", tm->hour, tm->min);	return buf;} char*strenttime(char **tzo){	static char buf[32];	Tm *tm;	int n;	long t; 	t = time(nil);	tm = gmtime(t);	n = sprint(buf, "%04d-%02d-%02dT%02d:%02d:%02dZ",		tm->year+1900,		tm->mon+1,		tm->mday,		tm->hour,		tm->min,		tm->sec);	*tzo = &buf[n+1];	tm = localtime(t);	sprint(*tzo, "%+03d:%02d", tm->tzoff/3600, abs(tm->tzoff/60)%60);	return buf;} voidcleaninput(int n){	static char d[] = {8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8}; 	while(n > 0)		n -= write(1, d, sizeof(d) > n ? n : sizeof(d));} voidsetlabel(char *label, char *prsuffix){	static char *oldlabel;	int fd; 	if(oldlabel == nil){		oldlabel = mallocz(64, 1);		fd = open("/dev/label", OREAD);		read(fd, oldlabel, 63);		close(fd);	} 	fd = open("/dev/label", OWRITE);	if(label != nil){		if(label[0] == 0){			fprint(fd, "xmpp");			print("no target\n");		}else{			fprint(fd, "%s", label);			if(prsuffix != nil && prsuffix[0] != 0)				print("←→ %s [%s]\n", label, prsuffix);			else				print("←→ %s\n", label);		}	}else		fprint(fd, "%s", oldlabel);	close(fd);} char*strstamp(char *v){	static char buf[32];	Tm utc, *tm;	int i, len; 	len = strlen(v);	for(i = 0; i < len && (isdigit(v[i]) || v[i] == '.') ; i++);	if(i == len){ /* 1456830231.000345 this is Slack being a bag of shit */		tm = localtime(atol(v));		sprint(buf, "%02d:%02d", tm->hour, tm->min);		return buf;	} 	if(len < 17) /* can't parse, just use the current time */		return strtime(); 	/* 20130327T16:28:58 http://xmpp.org/extensions/xep-0091.html	 * or	 * 2016-02-25T10:00:15.400Z http://xmpp.org/extensions/xep-0203.html	 */	for(i = 0; i < len; i++)		if(isdigit(v[i]))			v[i] -= '0'; 	memset(&utc, 0, sizeof(utc));	utc.year = v[0]*1000+v[1]*100+v[2]*10+v[3] - 1900;	if(v[4] == '-' && v[7] == '-'){		utc.mon = v[5]*10+v[6] - 1;		utc.mday = v[8]*10+v[9];		i = 2;	}else{		utc.mon = v[4]*10+v[5] - 1;		utc.mday = v[6]*10+v[7];		i = 0;	}	utc.hour = v[9+i]*10+v[10+i];	utc.min = v[12+i]*10+v[13+i];	utc.zone[0] = 'G';	utc.zone[1] = 'M';	utc.zone[2] = 'T'; 	tm = localtime(tm2sec(&utc));	sprint(buf, "%04d/%02d/%02d %02d:%02d",		tm->year+1900,		tm->mon+1,		tm->mday,		tm->hour,		tm->min); 	memmove(&utc, tm, sizeof(utc));	tm = localtime(time(nil));	if(tm->year != utc.year || tm->mon != utc.mon || tm->mday != utc.mday)		return buf; 	return buf+11;} char *readlines(void){	char *str, *s;	int len, catlen, total; 	str = strdup("");	len = total = 0;	for(; s = Brdstr(&kbin, '\n', 0);){		catlen = strlen(s);		total += utflen(s);		str = realloc(str, len + catlen + 1);		memcpy(&str[len], s, catlen + 1);		free(s);		len += catlen;		if(len >= 2 && str[len-2] == '.' && (len < 3 || str[len-3] == '\n')){			str[len - (len > 2 ? 3 : 2)] = 0;			break;		}	}	cleaninput(total);	return str;}