#include <config.h>
#include "util.h"
+#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
}
char *
-xasprintf(const char *format, ...)
+xvasprintf(const char *format, va_list args)
{
- va_list args;
+ va_list args2;
size_t needed;
char *s;
- va_start(args, format);
+ va_copy(args2, args);
needed = vsnprintf(NULL, 0, format, args);
- va_end(args);
s = xmalloc(needed + 1);
+ vsnprintf(s, needed + 1, format, args2);
+ va_end(args2);
+
+ return s;
+}
+
+void *
+x2nrealloc(void *p, size_t *n, size_t s)
+{
+ *n = *n == 0 ? 1 : 2 * *n;
+ return xrealloc(p, *n * s);
+}
+
+char *
+xasprintf(const char *format, ...)
+{
+ va_list args;
+ char *s;
+
va_start(args, format);
- vsnprintf(s, needed + 1, format, args);
+ s = xvasprintf(format, args);
va_end(args);
return s;
}
+void
+strlcpy(char *dst, const char *src, size_t size)
+{
+ if (size > 0) {
+ size_t n = strlen(src);
+ size_t n_copy = MIN(n, size - 1);
+ memcpy(dst, src, n_copy);
+ dst[n_copy] = '\0';
+ }
+}
+
void
ofp_fatal(int err_no, const char *format, ...)
{
void
ofp_error(int err_no, const char *format, ...)
{
+ int save_errno = errno;
va_list args;
fprintf(stderr, "%s: ", program_name);
if (err_no != 0)
fprintf(stderr, " (%s)", strerror(err_no));
putc('\n', stderr);
+
+ errno = save_errno;
}
/* Sets program_name based on 'argv0'. Should be called at the beginning of