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#include "nullpo.hpp"
#include <cstdarg> // exception to "no va_list" rule
#include <cstdio>
#include <cstring>
static
void nullpo_info_core(const char *file, int line, const char *func);
__attribute__((format(printf, 4, 0)))
static
void nullpo_info_core(const char *file, int line, const char *func,
const char *fmt, va_list ap);
/// Null check and print format
bool nullpo_chk_f(const char *file, int line, const char *func,
const void *target, const char *fmt, ...)
{
va_list ap;
if (target)
return 0;
va_start(ap, fmt);
nullpo_info_core(file, line, func, fmt, ap);
va_end(ap);
return 1;
}
bool nullpo_chk(const char *file, int line, const char *func,
const void *target)
{
if (target)
return 0;
nullpo_info_core(file, line, func);
return 1;
}
/// External functions
void nullpo_info_f(const char *file, int line, const char *func,
const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
nullpo_info_core(file, line, func, fmt, ap);
va_end(ap);
}
void nullpo_info(const char *file, int line, const char *func)
{
nullpo_info_core(file, line, func);
}
/// Actual output function
static
void nullpo_info_core(const char *file, int line, const char *func)
{
if (!file)
file = "??";
if (!func || !*func)
func = "unknown";
fprintf(stderr, "%s:%d: in func `%s': NULL pointer\n", file, line, func);
}
static
void nullpo_info_core(const char *file, int line, const char *func,
const char *fmt, va_list ap)
{
nullpo_info_core(file, line, func);
if (fmt && *fmt)
{
vfprintf(stderr, fmt, ap);
if (fmt[strlen(fmt) - 1] != '\n')
fputc('\n', stderr);
}
}
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