print_string.h

/*
 * Copyright (c) 2012 by Farsight Security, Inc.
 *
 * 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
 *
 *    http://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.
 */

#ifndef MY_PRINT_STRING_H
#define MY_PRINT_STRING_H

#include <ctype.h>
#include <stdio.h>
#include <stdint.h>

static inline void
print_string(const void *data, size_t len, FILE *out)
{
	uint8_t *str = (uint8_t *) data;
	fputc('"', out);
	while (len-- != 0) {
		unsigned c = *(str++);
		if (isprint(c)) {
			if (c == '"')
				fputs("\\\"", out);
			else
				fputc(c, out);
		} else {
			fprintf(out, "\\x%02x", c);
		}
	}
	fputc('"', out);
}

#endif /* MY_PRINT_STRING_H */