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#include <u.h>
#include <libc.h>
#include <bio.h>
#include <thread.h>
#include <regexp.h>
#include "mail.h"
void *
emalloc(ulong n)
{
void *v;
v = mallocz(n, 1);
if(v == nil)
sysfatal("malloc: %r");
setmalloctag(v, getcallerpc(&n));
return v;
}
void *
erealloc(void *p, ulong n)
{
void *v;
v = realloc(p, n);
if(v == nil)
sysfatal("realloc: %r");
setmalloctag(v, getcallerpc(&p));
return v;
}
char*
estrdup(char *s)
{
s = strdup(s);
if(s == nil)
sysfatal("strdup: %r");
setmalloctag(s, getcallerpc(&s));
return s;
}
char*
estrjoin(char *s, ...)
{
va_list ap;
char *r, *t, *p, *e;
int n;
va_start(ap, s);
n = strlen(s) + 1;
while((p = va_arg(ap, char*)) != nil)
n += strlen(p);
va_end(ap);
r = emalloc(n);
e = r + n;
va_start(ap, s);
t = strecpy(r, e, s);
while((p = va_arg(ap, char*)) != nil)
t = strecpy(t, e, p);
va_end(ap);
return r;
}
char*
esmprint(char *fmt, ...)
{
char *s;
va_list ap;
va_start(ap, fmt);
s = vsmprint(fmt, ap);
va_end(ap);
if(s == nil)
sysfatal("smprint: %r");
setmalloctag(s, getcallerpc(&fmt));
return s;
}
char*
fslurp(int fd, int *nbuf)
{
int n, sz, r;
char *buf;
n = 0;
sz = 128;
buf = emalloc(sz);
while(1){
r = read(fd, buf + n, sz - n);
if(r == 0)
break;
if(r == -1)
goto error;
n += r;
if(n == sz){
sz += sz/2;
buf = erealloc(buf, sz);
}
}
buf[n] = 0;
if(nbuf)
*nbuf = n;
return buf;
error:
free(buf);
return nil;
}
char *
rslurp(Mesg *m, char *f, int *nbuf)
{
char *path;
int fd;
char *r;
if(m == nil)
path = estrjoin(mbox.path, "/", f, nil);
else
path = estrjoin(mbox.path, "/", m->name, "/", f, nil);
fd = open(path, OREAD);
free(path);
if(fd == -1)
return nil;
r = fslurp(fd, nbuf);
close(fd);
return r;
}
u32int
strhash(char *s)
{
u32int h, c;
h = 5381;
while(c = *s++ & 0xff)
h = ((h << 5) + h) + c;
return h;
}
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