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zlib.c
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/*
A stripped, low-ram zlib decompressor. Supports only raw deflate, and only one-shot mode.
For a compressor, see /~https://github.com/cc65/cc65/blob/master/util/zlib/deflater.c
(C) Lauri Kasanen, based on tinfl by Rich Geldreich. See the bottom for the public domain
license.
*/
/* tinfl.c v1.11 - public domain inflate with zlib header parsing/adler32 checking (inflate-only subset of miniz.c)
See "unlicense" statement at the end of this file.
Rich Geldreich <richgel99@gmail.com>, last updated May 20, 2011
Implements RFC 1950: http://www.ietf.org/rfc/rfc1950.txt and RFC 1951: http://www.ietf.org/rfc/rfc1951.txt
The entire decompressor coroutine is implemented in tinfl_decompress(). The other functions are optional high-level helpers.
*/
#ifndef TINFL_HEADER_INCLUDED
#define TINFL_HEADER_INCLUDED
#include <stddef.h>
#include <stdint.h>
typedef unsigned char mz_uint8;
typedef signed short mz_int16;
typedef unsigned short mz_uint16;
typedef unsigned int mz_uint32;
typedef unsigned int mz_uint;
//typedef long unsigned int size_t;
// Works around MSVC's spammy "warning C4127: conditional expression is constant" message.
#define MZ_MACRO_END while (0)
// tinfl_decompress_mem_to_mem() decompresses a block in memory to another block in memory.
// Returns TINFL_DECOMPRESS_MEM_TO_MEM_FAILED on failure, or the number of bytes written on success.
#define TINFL_DECOMPRESS_MEM_TO_MEM_FAILED ((size_t)(-1))
struct tinfl_decompressor_tag; typedef struct tinfl_decompressor_tag tinfl_decompressor;
// Return status.
typedef enum
{
TINFL_STATUS_BAD_PARAM = -3,
TINFL_STATUS_ADLER32_MISMATCH = -2,
TINFL_STATUS_FAILED = -1,
TINFL_STATUS_DONE = 0,
TINFL_STATUS_NEEDS_MORE_INPUT = 1,
TINFL_STATUS_HAS_MORE_OUTPUT = 2
} tinfl_status;
// Initializes the decompressor to its initial state.
#define tinfl_init(r) do { (r)->m_state = 0; } MZ_MACRO_END
// Internal/private bits follow.
enum
{
TINFL_MAX_HUFF_TABLES = 3, TINFL_MAX_HUFF_SYMBOLS_0 = 288, TINFL_MAX_HUFF_SYMBOLS_1 = 32, TINFL_MAX_HUFF_SYMBOLS_2 = 19,
TINFL_FAST_LOOKUP_BITS = 8, TINFL_FAST_LOOKUP_SIZE = 1 << TINFL_FAST_LOOKUP_BITS
};
typedef struct
{
mz_uint8 m_code_size[TINFL_MAX_HUFF_SYMBOLS_0];
mz_int16 m_look_up[TINFL_FAST_LOOKUP_SIZE], m_tree[TINFL_MAX_HUFF_SYMBOLS_0 * 2];
} tinfl_huff_table0;
typedef struct
{
mz_uint8 m_code_size[TINFL_MAX_HUFF_SYMBOLS_1];
mz_int16 m_look_up[TINFL_FAST_LOOKUP_SIZE], m_tree[TINFL_MAX_HUFF_SYMBOLS_1 * 2];
} tinfl_huff_table_small;
typedef mz_uint32 tinfl_bit_buf_t;
struct tinfl_decompressor_tag
{
mz_uint32 m_state, m_num_bits, m_final, m_type, m_dist, m_counter, m_num_extra, m_table_sizes[TINFL_MAX_HUFF_TABLES];
tinfl_bit_buf_t m_bit_buf;
size_t m_dist_from_out_buf_start;
tinfl_huff_table0 m_table0;
tinfl_huff_table_small m_table1;
tinfl_huff_table_small m_table2;
mz_uint8 m_raw_header[4], m_len_codes[TINFL_MAX_HUFF_SYMBOLS_0 + TINFL_MAX_HUFF_SYMBOLS_1 + 137];
};
#endif // #ifdef TINFL_HEADER_INCLUDED
// ------------------- End of Header: Implementation follows. (If you only want the header, define MINIZ_HEADER_FILE_ONLY.)
#ifndef TINFL_HEADER_FILE_ONLY
#include <string.h>
#define MZ_MAX(a,b) (((a)>(b))?(a):(b))
#define MZ_MIN(a,b) (((a)<(b))?(a):(b))
#define MZ_CLEAR_OBJ(obj) memset(&(obj), 0, sizeof(obj))
#define MZ_READ_LE16(p) ((mz_uint32)(((const mz_uint8 *)(p))[0]) | ((mz_uint32)(((const mz_uint8 *)(p))[1]) << 8U))
#define MZ_READ_LE32(p) ((mz_uint32)(((const mz_uint8 *)(p))[0]) | ((mz_uint32)(((const mz_uint8 *)(p))[1]) << 8U) | ((mz_uint32)(((const mz_uint8 *)(p))[2]) << 16U) | ((mz_uint32)(((const mz_uint8 *)(p))[3]) << 24U))
#define TINFL_MEMCPY(d, s, l) memcpy(d, s, l)
#define TINFL_MEMSET(p, c, l) memset(p, c, l)
#define TINFL_CR_RETURN(state_index, result) return result
// TODO: If the caller has indicated that there's no more input, and we attempt to read beyond the input buf, then something is wrong with the input because the inflator never
// reads ahead more than it needs to. Currently TINFL_GET_BYTE() pads the end of the stream with 0's in this scenario.
#define TINFL_GET_BYTE(state_index, c) do { \
if (pIn_buf_cur >= pIn_buf_end) { \
for ( ; ; ) { \
c = 0; \
break; \
} \
} else c = *pIn_buf_cur++; } MZ_MACRO_END
#define TINFL_NEED_BITS(state_index, n) do { mz_uint c; TINFL_GET_BYTE(state_index, c); bit_buf |= (((tinfl_bit_buf_t)c) << num_bits); num_bits += 8; } while (num_bits < (mz_uint)(n))
#define TINFL_SKIP_BITS(state_index, n) do { if (num_bits < (mz_uint)(n)) { TINFL_NEED_BITS(state_index, n); } bit_buf >>= (n); num_bits -= (n); } MZ_MACRO_END
#define TINFL_GET_BITS(state_index, b, n) do { if (num_bits < (mz_uint)(n)) { TINFL_NEED_BITS(state_index, n); } b = bit_buf & ((1 << (n)) - 1); bit_buf >>= (n); num_bits -= (n); } MZ_MACRO_END
// TINFL_HUFF_BITBUF_FILL() is only used rarely, when the number of bytes remaining in the input buffer falls below 2.
// It reads just enough bytes from the input stream that are needed to decode the next Huffman code (and absolutely no more). It works by trying to fully decode a
// Huffman code by using whatever bits are currently present in the bit buffer. If this fails, it reads another byte, and tries again until it succeeds or until the
// bit buffer contains >=15 bits (deflate's max. Huffman code size).
#define TINFL_HUFF_BITBUF_FILL(state_index, pHuff) \
do { \
temp = (pHuff)->m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]; \
if (temp >= 0) { \
code_len = temp >> 9; \
if ((code_len) && (num_bits >= code_len)) \
break; \
} else if (num_bits > TINFL_FAST_LOOKUP_BITS) { \
code_len = TINFL_FAST_LOOKUP_BITS; \
do { \
temp = (pHuff)->m_tree[~temp + ((bit_buf >> code_len++) & 1)]; \
} while ((temp < 0) && (num_bits >= (code_len + 1))); if (temp >= 0) break; \
} TINFL_GET_BYTE(state_index, c); bit_buf |= (((tinfl_bit_buf_t)c) << num_bits); num_bits += 8; \
} while (num_bits < 15);
// TINFL_HUFF_DECODE() decodes the next Huffman coded symbol. It's more complex than you would initially expect because the zlib API expects the decompressor to never read
// beyond the final byte of the deflate stream. (In other words, when this macro wants to read another byte from the input, it REALLY needs another byte in order to fully
// decode the next Huffman code.) Handling this properly is particularly important on raw deflate (non-zlib) streams, which aren't followed by a byte aligned adler-32.
// The slow path is only executed at the very end of the input buffer.
#define TINFL_HUFF_DECODE(state_index, sym, pHuff) do { \
int temp; mz_uint code_len, c; \
if (num_bits < 15) { \
if ((pIn_buf_end - pIn_buf_cur) < 2) { \
TINFL_HUFF_BITBUF_FILL(state_index, pHuff); \
} else { \
bit_buf |= (((tinfl_bit_buf_t)pIn_buf_cur[0]) << num_bits) | (((tinfl_bit_buf_t)pIn_buf_cur[1]) << (num_bits + 8)); pIn_buf_cur += 2; num_bits += 16; \
} \
} \
if ((temp = (pHuff)->m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0) \
code_len = temp >> 9, temp &= 511; \
else { \
code_len = TINFL_FAST_LOOKUP_BITS; do { temp = (pHuff)->m_tree[~temp + ((bit_buf >> code_len++) & 1)]; } while (temp < 0); \
} sym = temp; bit_buf >>= code_len; num_bits -= code_len; } MZ_MACRO_END
static tinfl_status tinfl_decompress(tinfl_decompressor * const r, const mz_uint8 *pIn_buf_next, const size_t pIn_buf_size, mz_uint8 *pOut_buf_start, mz_uint8 *pOut_buf_next, const size_t pOut_buf_size)
{
static const int s_length_base[31] = { 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0 };
static const int s_length_extra[31] = { 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 0, 0 };
static const int s_dist_base[32] = { 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577, 0, 0};
static const int s_dist_extra[32] = { 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13};
static const mz_uint8 s_length_dezigzag[19] = { 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 };
static const int s_min_table_sizes[3] = { 257, 1, 4 };
tinfl_status status = TINFL_STATUS_FAILED; mz_uint32 num_bits, dist, counter, num_extra; tinfl_bit_buf_t bit_buf;
const mz_uint8 *pIn_buf_cur = pIn_buf_next, *const pIn_buf_end = pIn_buf_next + pIn_buf_size;
mz_uint8 *pOut_buf_cur = pOut_buf_next, *const pOut_buf_end = pOut_buf_next + pOut_buf_size;
size_t dist_from_out_buf_start;
num_bits = r->m_num_bits; bit_buf = r->m_bit_buf; dist = r->m_dist; counter = r->m_counter; num_extra = r->m_num_extra; dist_from_out_buf_start = r->m_dist_from_out_buf_start;
bit_buf = num_bits = dist = counter = num_extra = 0;
do
{
TINFL_GET_BITS(3, r->m_final, 3); r->m_type = r->m_final >> 1;
if (r->m_type == 0)
{
TINFL_SKIP_BITS(5, num_bits & 7);
for (counter = 0; counter < 4; ++counter) { if (num_bits) TINFL_GET_BITS(6, r->m_raw_header[counter], 8); else TINFL_GET_BYTE(7, r->m_raw_header[counter]); }
if ((counter = (r->m_raw_header[0] | (r->m_raw_header[1] << 8))) != (mz_uint)(0xFFFF ^ (r->m_raw_header[2] | (r->m_raw_header[3] << 8)))) { TINFL_CR_RETURN(39, TINFL_STATUS_FAILED); }
while ((counter) && (num_bits))
{
TINFL_GET_BITS(51, dist, 8);
while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(52, TINFL_STATUS_HAS_MORE_OUTPUT); }
*pOut_buf_cur++ = (mz_uint8)dist;
counter--;
}
while (counter)
{
size_t n;
while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(9, TINFL_STATUS_HAS_MORE_OUTPUT); }
while (pIn_buf_cur >= pIn_buf_end)
{
TINFL_CR_RETURN(40, TINFL_STATUS_FAILED);
}
n = MZ_MIN(MZ_MIN((size_t)(pOut_buf_end - pOut_buf_cur), (size_t)(pIn_buf_end - pIn_buf_cur)), counter);
TINFL_MEMCPY(pOut_buf_cur, pIn_buf_cur, n); pIn_buf_cur += n; pOut_buf_cur += n; counter -= (mz_uint)n;
}
}
else if (r->m_type == 3)
{
TINFL_CR_RETURN(10, TINFL_STATUS_FAILED);
}
else
{
if (r->m_type == 1)
{
mz_uint8 *p = r->m_table0.m_code_size; mz_uint i;
r->m_table_sizes[0] = 288; r->m_table_sizes[1] = 32; TINFL_MEMSET(r->m_table1.m_code_size, 5, 32);
for ( i = 0; i <= 143; ++i) *p++ = 8;
for ( ; i <= 255; ++i) *p++ = 9;
for ( ; i <= 279; ++i) *p++ = 7;
for ( ; i <= 287; ++i) *p++ = 8;
}
else
{
for (counter = 0; counter < 3; counter++) { TINFL_GET_BITS(11, r->m_table_sizes[counter], "\05\05\04"[counter]); r->m_table_sizes[counter] += s_min_table_sizes[counter]; }
MZ_CLEAR_OBJ(r->m_table2.m_code_size);
for (counter = 0; counter < r->m_table_sizes[2]; counter++) { mz_uint s; TINFL_GET_BITS(14, s, 3); r->m_table2.m_code_size[s_length_dezigzag[counter]] = (mz_uint8)s; }
r->m_table_sizes[2] = 19;
}
for ( ; (int)r->m_type >= 0; r->m_type--)
{
if (r->m_type == 0)
{
int tree_next, tree_cur; tinfl_huff_table0 *pTable;
mz_uint i, j, used_syms, total, sym_index, next_code[17], total_syms[16]; pTable = &r->m_table0; MZ_CLEAR_OBJ(total_syms); MZ_CLEAR_OBJ(pTable->m_look_up); MZ_CLEAR_OBJ(pTable->m_tree);
for (i = 0; i < r->m_table_sizes[r->m_type]; ++i) total_syms[pTable->m_code_size[i]]++;
used_syms = 0, total = 0; next_code[0] = next_code[1] = 0;
for (i = 1; i <= 15; ++i) { used_syms += total_syms[i]; next_code[i + 1] = (total = ((total + total_syms[i]) << 1)); }
if ((65536 != total) && (used_syms > 1))
{
TINFL_CR_RETURN(35, TINFL_STATUS_FAILED);
}
for (tree_next = -1, sym_index = 0; sym_index < r->m_table_sizes[r->m_type]; ++sym_index)
{
mz_uint rev_code = 0, l, cur_code, code_size = pTable->m_code_size[sym_index];
if (!code_size) continue;
cur_code = next_code[code_size]++;
for (l = code_size; l > 0; l--, cur_code >>= 1) rev_code = (rev_code << 1) | (cur_code & 1);
if (code_size <= TINFL_FAST_LOOKUP_BITS) { mz_int16 k = (mz_int16)((code_size << 9) | sym_index); while (rev_code < TINFL_FAST_LOOKUP_SIZE) { pTable->m_look_up[rev_code] = k; rev_code += (1 << code_size); } continue; }
if (0 == (tree_cur = pTable->m_look_up[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)])) { pTable->m_look_up[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)] = (mz_int16)tree_next; tree_cur = tree_next; tree_next -= 2; }
rev_code >>= (TINFL_FAST_LOOKUP_BITS - 1);
for (j = code_size; j > (TINFL_FAST_LOOKUP_BITS + 1); j--)
{
tree_cur -= ((rev_code >>= 1) & 1);
if (!pTable->m_tree[-tree_cur - 1]) { pTable->m_tree[-tree_cur - 1] = (mz_int16)tree_next; tree_cur = tree_next; tree_next -= 2; }
else tree_cur = pTable->m_tree[-tree_cur - 1];
}
tree_cur -= ((rev_code >>= 1) & 1); pTable->m_tree[-tree_cur - 1] = (mz_int16)sym_index;
}
}
else
{
int tree_next, tree_cur; tinfl_huff_table_small *pTable;
if (r->m_type == 1)
pTable = &r->m_table1;
else
pTable = &r->m_table2;
mz_uint i, j, used_syms, total, sym_index, next_code[17], total_syms[16]; MZ_CLEAR_OBJ(total_syms); MZ_CLEAR_OBJ(pTable->m_look_up); MZ_CLEAR_OBJ(pTable->m_tree);
for (i = 0; i < r->m_table_sizes[r->m_type]; ++i) total_syms[pTable->m_code_size[i]]++;
used_syms = 0, total = 0; next_code[0] = next_code[1] = 0;
for (i = 1; i <= 15; ++i) { used_syms += total_syms[i]; next_code[i + 1] = (total = ((total + total_syms[i]) << 1)); }
if ((65536 != total) && (used_syms > 1))
{
TINFL_CR_RETURN(36, TINFL_STATUS_FAILED);
}
for (tree_next = -1, sym_index = 0; sym_index < r->m_table_sizes[r->m_type]; ++sym_index)
{
mz_uint rev_code = 0, l, cur_code, code_size = pTable->m_code_size[sym_index];
if (!code_size) continue;
cur_code = next_code[code_size]++;
for (l = code_size; l > 0; l--, cur_code >>= 1) rev_code = (rev_code << 1) | (cur_code & 1);
if (code_size <= TINFL_FAST_LOOKUP_BITS) { mz_int16 k = (mz_int16)((code_size << 9) | sym_index); while (rev_code < TINFL_FAST_LOOKUP_SIZE) { pTable->m_look_up[rev_code] = k; rev_code += (1 << code_size); } continue; }
if (0 == (tree_cur = pTable->m_look_up[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)])) { pTable->m_look_up[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)] = (mz_int16)tree_next; tree_cur = tree_next; tree_next -= 2; }
rev_code >>= (TINFL_FAST_LOOKUP_BITS - 1);
for (j = code_size; j > (TINFL_FAST_LOOKUP_BITS + 1); j--)
{
tree_cur -= ((rev_code >>= 1) & 1);
if (!pTable->m_tree[-tree_cur - 1]) { pTable->m_tree[-tree_cur - 1] = (mz_int16)tree_next; tree_cur = tree_next; tree_next -= 2; }
else tree_cur = pTable->m_tree[-tree_cur - 1];
}
tree_cur -= ((rev_code >>= 1) & 1); pTable->m_tree[-tree_cur - 1] = (mz_int16)sym_index;
}
}
if (r->m_type == 2)
{
for (counter = 0; counter < (r->m_table_sizes[0] + r->m_table_sizes[1]); )
{
mz_uint s; TINFL_HUFF_DECODE(16, dist, &r->m_table2);
if (dist < 16) { r->m_len_codes[counter++] = (mz_uint8)dist; continue; }
if ((dist == 16) && (!counter))
{
TINFL_CR_RETURN(17, TINFL_STATUS_FAILED);
}
num_extra = "\02\03\07"[dist - 16]; TINFL_GET_BITS(18, s, num_extra); s += "\03\03\013"[dist - 16];
TINFL_MEMSET(r->m_len_codes + counter, (dist == 16) ? r->m_len_codes[counter - 1] : 0, s); counter += s;
}
if ((r->m_table_sizes[0] + r->m_table_sizes[1]) != counter)
{
TINFL_CR_RETURN(21, TINFL_STATUS_FAILED);
}
TINFL_MEMCPY(r->m_table0.m_code_size, r->m_len_codes, r->m_table_sizes[0]); TINFL_MEMCPY(r->m_table1.m_code_size, r->m_len_codes + r->m_table_sizes[0], r->m_table_sizes[1]);
}
}
for ( ; ; )
{
mz_uint8 *pSrc;
for ( ; ; )
{
if (((pIn_buf_end - pIn_buf_cur) < 4) || ((pOut_buf_end - pOut_buf_cur) < 2))
{
TINFL_HUFF_DECODE(23, counter, &r->m_table0);
if (counter >= 256)
break;
while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(24, TINFL_STATUS_HAS_MORE_OUTPUT); }
*pOut_buf_cur++ = (mz_uint8)counter;
}
else
{
int sym2; mz_uint code_len;
if (num_bits < 15) { bit_buf |= (((tinfl_bit_buf_t)MZ_READ_LE16(pIn_buf_cur)) << num_bits); pIn_buf_cur += 2; num_bits += 16; }
if ((sym2 = r->m_table0.m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0)
code_len = sym2 >> 9;
else
{
code_len = TINFL_FAST_LOOKUP_BITS;
do { sym2 = r->m_table0.m_tree[~sym2 + ((bit_buf >> code_len++) & 1)]; }
while (sym2 < 0);
}
counter = sym2; bit_buf >>= code_len; num_bits -= code_len;
if (counter & 256)
break;
if (num_bits < 15) { bit_buf |= (((tinfl_bit_buf_t)MZ_READ_LE16(pIn_buf_cur)) << num_bits); pIn_buf_cur += 2; num_bits += 16; }
if ((sym2 = r->m_table0.m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0)
code_len = sym2 >> 9;
else
{
code_len = TINFL_FAST_LOOKUP_BITS;
do { sym2 = r->m_table0.m_tree[~sym2 + ((bit_buf >> code_len++) & 1)]; }
while (sym2 < 0);
}
bit_buf >>= code_len; num_bits -= code_len;
pOut_buf_cur[0] = (mz_uint8)counter;
if (sym2 & 256)
{
pOut_buf_cur++;
counter = sym2;
break;
}
pOut_buf_cur[1] = (mz_uint8)sym2;
pOut_buf_cur += 2;
}
}
if ((counter &= 511) == 256) break;
num_extra = s_length_extra[counter - 257]; counter = s_length_base[counter - 257];
if (num_extra) { mz_uint extra_bits; TINFL_GET_BITS(25, extra_bits, num_extra); counter += extra_bits; }
TINFL_HUFF_DECODE(26, dist, &r->m_table1);
num_extra = s_dist_extra[dist]; dist = s_dist_base[dist];
if (num_extra) { mz_uint extra_bits; TINFL_GET_BITS(27, extra_bits, num_extra); dist += extra_bits; }
dist_from_out_buf_start = pOut_buf_cur - pOut_buf_start;
if ((dist > dist_from_out_buf_start))
{
TINFL_CR_RETURN(37, TINFL_STATUS_FAILED);
}
pSrc = pOut_buf_start + (dist_from_out_buf_start - dist);
if ((MZ_MAX(pOut_buf_cur, pSrc) + counter) > pOut_buf_end)
{
while (counter--)
{
while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(53, TINFL_STATUS_HAS_MORE_OUTPUT); }
*pOut_buf_cur++ = pOut_buf_start[dist_from_out_buf_start++ - dist];
}
continue;
}
do
{
pOut_buf_cur[0] = pSrc[0];
pOut_buf_cur[1] = pSrc[1];
pOut_buf_cur[2] = pSrc[2];
pOut_buf_cur += 3; pSrc += 3;
}
while ((int)(counter -= 3) > 2);
if ((int)counter > 0)
{
pOut_buf_cur[0] = pSrc[0];
if ((int)counter > 1)
pOut_buf_cur[1] = pSrc[1];
pOut_buf_cur += counter;
}
}
}
}
while (!(r->m_final & 1));
TINFL_CR_RETURN(34, TINFL_STATUS_DONE);
return status;
}
int zlib_unpack(void *pOut_buf, const unsigned out_buf_len, const void *pSrc_buf, const unsigned src_buf_len)
{
tinfl_decompressor decomp; tinfl_status status; tinfl_init(&decomp);
status = tinfl_decompress(&decomp, (const mz_uint8*)pSrc_buf, src_buf_len, (mz_uint8*)pOut_buf, (mz_uint8*)pOut_buf, out_buf_len);
return (status != TINFL_STATUS_DONE) ? TINFL_DECOMPRESS_MEM_TO_MEM_FAILED : out_buf_len;
}
#endif // #ifndef TINFL_HEADER_FILE_ONLY
/*
This is free and unencumbered software released into the public domain.
Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in source code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.
In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit
of the public at large and to the detriment of our heirs and
successors. We intend this dedication to be an overt act of
relinquishment in perpetuity of all present and future rights to this
software under copyright law.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
For more information, please refer to <http://unlicense.org/>
*/