fb6c76cb6
Denys Vlasenko
2010-05-30
Subject
forgotten "git add"...
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archival/libunarchive/decompress_unxz.c+116 -0
| @@ -0,0 +1,116 @@ | |
| + | /* |
| + | * This file uses XZ Embedded library code which is written |
| + | * by Lasse Collin <[email protected]> |
| + | * and Igor Pavlov <http://7-zip.org/> |
| + | * |
| + | * See README file in unxzbz/ directory for more information. |
| + | * |
| + | * This file is: |
| + | * Copyright (C) 2010 Denys Vlasenko <[email protected]> |
| + | * Licensed under GPLv2, see file LICENSE in this tarball for details. |
| + | */ |
| + | #include "libbb.h" |
| + | #include "unarchive.h" |
| + | |
| + | //#define XZ_DEBUG_MSG(...) bb_error_msg(__VA_ARGS) |
| + | #define XZ_REALLOC_DICT_BUF(ptr, size) xrealloc(ptr, size) |
| + | #define XZ_FUNC FAST_FUNC |
| + | #define XZ_EXTERN static |
| + | |
| + | #define xz_crc32_init(table) crc32_filltable(table, /*endian:*/ 0) |
| + | static uint32_t xz_crc32(uint32_t *crc32_table, |
| + | const uint8_t *buf, size_t size, uint32_t crc) |
| + | { |
| + | crc = ~crc; |
| + | |
| + | while (size != 0) { |
| + | crc = crc32_table[*buf++ ^ (crc & 0xFF)] ^ (crc >> 8); |
| + | --size; |
| + | } |
| + | |
| + | return ~crc; |
| + | } |
| + | #define xz_crc32 xz_crc32 |
| + | |
| + | #define get_unaligned_le32(buf) ({ uint32_t v; move_from_unaligned32(v, buf); SWAP_LE32(v); }) |
| + | #define get_unaligned_be32(buf) ({ uint32_t v; move_from_unaligned32(v, buf); SWAP_BE32(v); }) |
| + | #define put_unaligned_le32(val, buf) move_to_unaligned16(buf, SWAP_LE32(val)) |
| + | #define put_unaligned_be32(val, buf) move_to_unaligned16(buf, SWAP_BE32(val)) |
| + | |
| + | #include "unxz/xz.h" |
| + | #include "unxz/xz_config.h" |
| + | |
| + | #include "unxz/xz_dec_bcj.c" |
| + | #include "unxz/xz_dec_lzma2.c" |
| + | #include "unxz/xz_dec_stream.c" |
| + | #include "unxz/xz_lzma2.h" |
| + | #include "unxz/xz_private.h" |
| + | #include "unxz/xz_stream.h" |
| + | |
| + | IF_DESKTOP(long long) int FAST_FUNC |
| + | unpack_xz_stream_stdin(void) |
| + | { |
| + | struct xz_buf iobuf; |
| + | struct xz_dec *state; |
| + | unsigned char *membuf; |
| + | IF_DESKTOP(long long) int total = 0; |
| + | enum { |
| + | IN_SIZE = 4 * 1024, |
| + | OUT_SIZE = 60 * 1024, |
| + | }; |
| + | |
| + | membuf = xmalloc(IN_SIZE + OUT_SIZE); |
| + | memset(&iobuf, 0, sizeof(iobuf)); |
| + | iobuf.in = membuf; |
| + | iobuf.out = membuf + IN_SIZE; |
| + | iobuf.out_size = OUT_SIZE; |
| + | |
| + | state = xz_dec_init(64*1024); /* initial dict of 64k */ |
| + | xz_crc32_init(state->crc32_table); |
| + | |
| + | while (1) { |
| + | enum xz_ret r; |
| + | int insz, rd, outpos; |
| + | |
| + | iobuf.in_size -= iobuf.in_pos; |
| + | insz = iobuf.in_size; |
| + | if (insz) |
| + | memmove(membuf, membuf + iobuf.in_pos, insz); |
| + | iobuf.in_pos = 0; |
| + | rd = IN_SIZE - insz; |
| + | if (rd) { |
| + | rd = safe_read(STDIN_FILENO, membuf + insz, rd); |
| + | if (rd < 0) { |
| + | bb_error_msg("read error"); |
| + | total = -1; |
| + | break; |
| + | } |
| + | iobuf.in_size = insz + rd; |
| + | } |
| + | // bb_error_msg(">in pos:%d size:%d out pos:%d size:%d", |
| + | // iobuf.in_pos, iobuf.in_size, iobuf.out_pos, iobuf.out_size); |
| + | r = xz_dec_run(state, &iobuf); |
| + | // bb_error_msg("<in pos:%d size:%d out pos:%d size:%d r:%d", |
| + | // iobuf.in_pos, iobuf.in_size, iobuf.out_pos, iobuf.out_size, r); |
| + | outpos = iobuf.out_pos; |
| + | if (outpos) { |
| + | xwrite(STDOUT_FILENO, iobuf.out, outpos); |
| + | IF_DESKTOP(total += outpos;) |
| + | } |
| + | if (r == XZ_STREAM_END |
| + | || (r == XZ_BUF_ERROR && insz == 0 && outpos == 0) |
| + | ) { |
| + | break; |
| + | } |
| + | if (r != XZ_OK) { |
| + | bb_error_msg("corrupted data"); |
| + | total = -1; |
| + | break; |
| + | } |
| + | iobuf.out_pos = 0; |
| + | } |
| + | xz_dec_end(state); |
| + | free(membuf); |
| + | |
| + | return total; |
| + | } |