return t;
}
+void *
+mp_memdup(struct mempool *p, void *s, uns len)
+{
+ void *t = mp_alloc_fast(p, len);
+ memcpy(t, s, len);
+ return t;
+}
+
char *
mp_multicat(struct mempool *p, ...)
{
va_start(args, p);
char *x, *y;
uns cnt = 0;
- a = args;
+ va_copy(a, args);
while (x = va_arg(a, char *))
cnt++;
uns *sizes = alloca(cnt * sizeof(uns));
uns len = 1;
cnt = 0;
- a = args;
+ va_end(a);
+ va_copy(a, args);
while (x = va_arg(a, char *))
len += sizes[cnt++] = strlen(x);
char *buf = mp_alloc_fast_noalign(p, len);
y = buf;
- a = args;
+ va_end(a);
cnt = 0;
- while (x = va_arg(a, char *))
+ while (x = va_arg(args, char *))
{
memcpy(y, x, sizes[cnt]);
y += sizes[cnt++];
}
*y = 0;
+ va_end(args);
return buf;
}
+char *
+mp_strjoin(struct mempool *p, char **a, uns n, uns sep)
+{
+ uns sizes[n];
+ uns len = 1;
+ for (uns i=0; i<n; i++)
+ len += sizes[i] = strlen(a[i]);
+ if (sep && n)
+ len += n-1;
+ char *dest = mp_alloc_fast_noalign(p, len);
+ char *d = dest;
+ for (uns i=0; i<n; i++)
+ {
+ if (sep && i)
+ *d++ = sep;
+ memcpy(d, a[i], sizes[i]);
+ d += sizes[i];
+ }
+ *d = 0;
+ return dest;
+}
+
#ifdef TEST
#include <stdio.h>
char *s = mp_strdup(p, "12345");
char *c = mp_multicat(p, "<<", s, ">>", NULL);
puts(c);
+ char *a[] = { "bugs", "gnats", "insects" };
+ puts(mp_strjoin(p, a, 3, '.'));
+ puts(mp_strjoin(p, a, 3, 0));
return 0;
}