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#include <u.h>
#include <libc.h>
#include <bio.h>
#include <thread.h>
#include "dat.h"
void*
emalloc(uint n)
{
void *p;
p = malloc(n);
if(p == nil)
error("can't malloc: %r");
memset(p, 0, n);
return p;
}
char*
estrdup(char *s)
{
char *t;
t = emalloc(strlen(s)+1);
strcpy(t, s);
return t;
}
char*
estrstrdup(char *s, char *t)
{
char *u;
u = emalloc(strlen(s)+strlen(t)+1);
sprint(u, "%s%s", s, t);
return u;
}
char*
eappend(char *s, char *sep, char *t)
{
char *u;
if(t == nil)
u = estrstrdup(s, sep);
else{
u = emalloc(strlen(s)+strlen(sep)+strlen(t)+1);
sprint(u, "%s%s%s", s, sep, t);
}
free(s);
return u;
}
char*
egrow(char *s, char *sep, char *t)
{
s = eappend(s, sep, t);
free(t);
return s;
}
void
error(char *fmt, ...)
{
Fmt f;
char buf[64];
va_list arg;
fmtfdinit(&f, 2, buf, sizeof buf);
fmtprint(&f, "win: ");
va_start(arg, fmt);
fmtvprint(&f, fmt, arg);
va_end(arg);
fmtprint(&f, "\n");
fmtfdflush(&f);
threadexitsall(buf);
}
void
ctlprint(int fd, char *fmt, ...)
{
int n;
va_list arg;
va_start(arg, fmt);
n = vfprint(fd, fmt, arg);
va_end(arg);
if(n <= 0)
error("control file write error: %r");
}
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