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