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/*
* Copyright (c) 2016-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*
* Based on string_quote() from util.c.
* Assumes instr is NUL-terminated.
*/
void
print_quoted_string_ex(const char *instr, bool quote, const char *escape_chars)
{
print_quoted_memory_ex(instr, strlen(instr), quote, escape_chars);
}
void
print_quoted_string(const char *instr)
{
print_quoted_memory(instr, strlen(instr));
}
void
print_quoted_cstring(const char *instr, const size_t size)
{
const size_t len = strnlen(instr, size);
if (len < size) {
print_quoted_memory(instr, len);
} else {
print_quoted_memory(instr, size - 1);
printf("...");
}
}
void
print_quoted_stringn(const char *instr, const size_t size)
{
const size_t len = strnlen(instr, size);
if (len < size) {
print_quoted_memory(instr, len);
} else {
print_quoted_memory(instr, size);
printf("...");
}
}
static void
print_octal(unsigned char c, char next)
{
putchar('\\');
char c1 = '0' + (c & 0x7);
char c2 = '0' + ((c >> 3) & 0x7);
char c3 = '0' + (c >> 6);
if (next >= '0' && next <= '7') {
/* Print \octal */
putchar(c3);
putchar(c2);
} else {
/* Print \[[o]o]o */
if (c3 != '0')
putchar(c3);
if (c3 != '0' || c2 != '0')
putchar(c2);
}
putchar(c1);
}
void
print_quoted_memory_ex(const void *const instr, const size_t len,
bool quote, const char *escape_chars)
{
const unsigned char *str = (const unsigned char *) instr;
if (quote)
putchar('"');
for (size_t i = 0; i < len; ++i) {
const int c = str[i];
switch (c) {
case '\"':
printf("\\\"");
break;
case '\\':
printf("\\\\");
break;
case '\f':
printf("\\f");
break;
case '\n':
printf("\\n");
break;
case '\r':
printf("\\r");
break;
case '\t':
printf("\\t");
break;
case '\v':
printf("\\v");
break;
default:
if (c >= ' ' && c <= 0x7e &&
!(escape_chars && strchr(escape_chars, c))) {
putchar(c);
} else {
print_octal(c,
i < (len - 1) ? str[i + 1] : 0);
}
break;
}
}
if (quote)
putchar('"');
}
void
print_quoted_memory(const void *const instr, const size_t len)
{
print_quoted_memory_ex(instr, len, true, NULL);
}
void
print_quoted_hex(const void *const instr, const size_t len)
{
const unsigned char *str = instr;
printf("\"");
for (size_t i = 0; i < len; ++i)
printf("\\x%02x", str[i]);
printf("\"");
}
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