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/**
* @file
* @brief Handling of error conditions that are not program bugs.
**/
#include "AppHdr.h"
#include "errors.h"
#include <cerrno>
#include <cstdarg>
#include <cstring>
#include "stringutil.h"
#include "syscalls.h"
NORETURN void fail(const char *msg, ...)
{
va_list args;
va_start(args, msg);
string buf = vmake_stringf(msg, args);
va_end(args);
// Do we want to call end() right on when there's no one trying catching,
// or should we risk exception code mess things up?
throw ext_fail_exception(buf);
}
NORETURN void sysfail(const char *msg, ...)
{
va_list args;
va_start(args, msg);
string buf = vmake_stringf(msg, args);
va_end(args);
buf += ": ";
buf += strerror(errno);
throw ext_fail_exception(buf);
}
NORETURN void corrupted(const char *msg, ...)
{
va_list args;
va_start(args, msg);
string buf = vmake_stringf(msg, args);
va_end(args);
throw corrupted_save(buf);
}
/**
* Toss failures from a test into stderr & an error file, if there were any
* failures.
*
* @param fails The failures, if any.
* @param name Errors are dumped to "[name].out"; name should be unique.
*/
void dump_test_fails(string fails, string name)
{
if (fails.empty())
return;
fprintf(stderr, "%s", fails.c_str());
const string outfile = make_stringf("%s.out", name.c_str());
FILE *f = fopen_u(outfile.c_str(), "w");
if (!f)
sysfail("can't write test output");
fprintf(f, "%s", fails.c_str());
fclose(f);
fail("%s event errors (dumped to %s)",
name.c_str(), outfile.c_str());
}
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