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/* Chrysalide - Outil d'analyse de fichiers binaires
* szbin.h - prototypes pour une manipulation de données accompagnées d'une taille
*
* Copyright (C) 2024 Cyrille Bagard
*
* This file is part of Chrysalide.
*
* Chrysalide is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Chrysalide is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Chrysalide. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _COMMON_SZBIN_H
#define _COMMON_SZBIN_H
#include <assert.h>
#include <malloc.h>
#include <string.h>
#include "datatypes.h"
#include "io.h"
#include "leb128.h"
#include "sort.h"
/* Structure associant données et taille */
typedef struct _sized_binary_t
{
union {
const char *static_data; /* Données non modifiées */
char *data; /* Chaîne de caractères */
const bin_t *static_bin_data; /* Données brutes non modifiées*/
bin_t *bin_data; /* Données brutes */
};
size_t size; /* Taille correspondante */
} sized_binary_t;
#define init_sized_binary(sb) \
do \
{ \
(sb)->data = NULL; \
(sb)->size = 0; \
} \
while (0)
#define setup_sized_binary(sb, s) \
do \
{ \
(sb)->data = malloc(s); \
(sb)->size = s; \
} \
while (0)
#define setup_sized_binary_from_static_string(sb, s) \
do \
{ \
(sb)->static_data = s; \
(sb)->size = strlen(s) + 1; \
} \
while (0)
#define dup_into_sized_binary(sb, d, s) \
do \
{ \
size_t __size_once; \
__size_once = s; \
setup_sized_binary(sb, __size_once);\
memcpy((sb)->data, d, __size_once); \
} \
while (0)
#define dup_sized_binary(dst, src) \
dup_into_sized_binary((dst), (src)->static_data, (src)->size)
#define exit_sized_binary(sb) \
do \
{ \
if ((sb)->data != NULL) \
{ \
free((sb)->data); \
init_sized_binary(sb); \
} \
} \
while (0)
#define resize_sized_binary(sb, s) \
do \
{ \
(sb)->size = s; \
(sb)->data = realloc((sb)->data, \
(sb)->size); \
} \
while (0)
#define add_to_sized_binary(sb, d, s) \
do \
{ \
size_t __old_size; \
__old_size = (sb)->size; \
(sb)->size += s; \
(sb)->data = realloc((sb)->data, \
(sb)->size); \
memcpy((sb)->data + __old_size, \
d, s); \
} \
while (0)
#define add_static_to_sized_binary(sb, d) \
do \
{ \
size_t __len; \
__len = sizeof(d) - 1; \
add_to_sized_binary(sb, d, __len); \
} \
while (0)
#define memcmp_sized_binary(s1, s2) \
({ \
int __ret; \
size_t __n; \
__n = (s1)->size < (s2)->size ? (s1)->size : (s2)->size; \
__ret = memcmp((s1)->data, (s2)->data, __n); \
if (__ret == 0) \
__ret = sort_unsigned_long_long((s1)->size, (s2)->size);\
__ret; \
})
/**
* Conservations et rechargements.
*/
#define load_sized_binary(sb, f) \
({ \
uleb128_t __sz; \
bool __ret; \
__ret = load_uleb128(&__sz, f); \
if (__ret) \
{ \
setup_sized_binary(sb, __sz); \
__ret = safe_read(f, (sb)->data, (sb)->size); \
if (!__ret) \
exit_sized_binary(sb); \
} \
__ret; \
})
#define load_sized_binary_as_string(sb, f) \
({ \
uleb128_t __sz; \
bool __ret; \
__ret = load_uleb128(&__sz, f); \
if (__ret) \
{ \
setup_sized_binary(sb, __sz + 1); \
__ret = safe_read(f, (sb)->data, __sz); \
if (!__ret) \
exit_sized_binary(sb); \
(sb)->data[__sz] = '\0'; \
} \
__ret; \
})
#define store_sized_binary(sb, f) \
({ \
bool __ret; \
__ret = store_uleb128((const uleb128_t []){ (sb)->size }, f); \
if (__ret) \
__ret = safe_write(f, (sb)->static_data, (sb)->size); \
__ret; \
})
#define store_sized_binary_as_string(sb, f) \
({ \
bool __ret; \
size_t __length; \
assert((sb)->size >= 1); \
__length = (sb)->size - 1; \
assert((sb)->static_data[__length] == '\0'); \
__ret = store_uleb128((const uleb128_t []){ __length }, f); \
if (__ret) \
__ret = safe_write(f, (sb)->static_data, __length); \
__ret; \
})
#define unpack_sized_binary(sb, p, m) \
({ \
uleb128_t __sz; \
bool __ret; \
__ret = unpack_uleb128(&__sz, p, m); \
if (__ret) \
{ \
setup_sized_binary(sb, __sz); \
memcpy((sb)->data, *p, (sb)->size); \
*((uint8_t **)p) += __sz; \
} \
__ret; \
})
#define unpack_sized_binary_as_string(sb, p, m) \
({ \
uleb128_t __sz; \
bool __ret; \
__ret = unpack_uleb128(&__sz, p, m); \
if (__ret) \
{ \
setup_sized_binary(sb, __sz + 1); \
memcpy((sb)->data, *p, __sz); \
(sb)->data[__sz] = '\0'; \
*((uint8_t **)p) += __sz; \
} \
__ret; \
})
#define pack_sized_binary(sb, l) \
({ \
uint8_t *__result; \
size_t __pos; \
__result = pack_uleb128((const uleb128_t []){ (sb)->size }, l); \
__pos = *(l); \
*(l) += (sb)->size; \
__result = realloc(__result, *(l) * sizeof(uint8_t)); \
memcpy(&__result[__pos], (sb)->static_data, \
((sb)->size * sizeof(uint8_t))); \
__result; \
})
#define pack_sized_binary_as_string(sb, l) \
({ \
uint8_t *__result; \
size_t __length; \
size_t __pos; \
assert((sb)->size >= 1); \
__length = (sb)->size - 1; \
assert((sb)->static_data[__length] == '\0'); \
__result = pack_uleb128((const uleb128_t []){ __length }, l); \
__pos = *(l); \
*(l) += __length; \
__result = realloc(__result, *(l) * sizeof(uint8_t)); \
memcpy(&__result[__pos], (sb)->static_data, \
(__length * sizeof(uint8_t))); \
__result; \
})
#endif /* _COMMON_SZBIN_H */
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