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// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#include "xsslog.h"
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static void StrAppend4(char target[], const char a[], const char b[],
const char c[], const char d[]) {
stpcpy(stpcpy(stpcpy(stpcpy(target, a), b), c), d);
}
void CheckErrnoImpl(const bool condition, const char description[]) {
if (condition) {
return;
}
const int e = errno;
char buf[128];
fprintf(stderr, "%s: check %s failed: %s\n", kProjectName, description,
strerror_r(e, buf, 128));
_Exit(1);
}
void CheckRetImpl(const int e, const char description[]) {
if (e == 0) {
return;
}
char buf[128];
fprintf(stderr, "%s: %s failed: %s\n", kProjectName, description,
strerror_r(e, buf, 128));
_Exit(1);
}
void LogDebug(const char* const format, ...) {
const char colon_space[] = ": ";
char* const prefixed_format =
calloc(strlen(kProjectName) + strlen(colon_space) + strlen(format) + 2,
sizeof(char));
CHECK_ERRNO(prefixed_format != NULL);
StrAppend4(prefixed_format, kProjectName, ": ", format, "\n");
va_list args;
va_start(args, format);
vfprintf(stderr, prefixed_format, args);
va_end(args);
free(prefixed_format);
}
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