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7d17818cec
specification. Simplify things by removing most of the support for known uncompressed size in most places. There are some miscellaneous changes here and there too. The API of liblzma has got many changes and still some more will be done soon. While most of the code has been updated, some things are not fixed (the command line tool will choke with invalid filter chain, if nothing else). Subblock filter is somewhat broken for now. It will be updated once the encoded format of the Subblock filter has been decided.
194 lines
3.1 KiB
C
194 lines
3.1 KiB
C
///////////////////////////////////////////////////////////////////////////////
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//
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/// \file check.c
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/// \brief Check sizes
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//
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// This code has been put into the public domain.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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//
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///////////////////////////////////////////////////////////////////////////////
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#include "check.h"
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// See the .lzma header format specification section 2.1.1.2.
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LZMA_API const uint32_t lzma_check_sizes[LZMA_CHECK_ID_MAX + 1] = {
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0,
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4, 4, 4,
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8, 8, 8,
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16, 16, 16,
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32, 32, 32,
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64, 64, 64
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};
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LZMA_API const lzma_bool lzma_available_checks[LZMA_CHECK_ID_MAX + 1] = {
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true, // LZMA_CHECK_NONE
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#ifdef HAVE_CHECK_CRC32
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true,
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#else
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false,
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#endif
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false, // Reserved
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false, // Reserved
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#ifdef HAVE_CHECK_CRC64
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true,
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#else
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false,
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#endif
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false, // Reserved
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false, // Reserved
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false, // Reserved
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false, // Reserved
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false, // Reserved
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#ifdef HAVE_CHECK_SHA256
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true,
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#else
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false,
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#endif
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false, // Reserved
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false, // Reserved
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false, // Reserved
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false, // Reserved
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false, // Reserved
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};
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extern lzma_ret
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lzma_check_init(lzma_check *check, lzma_check_type type)
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{
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lzma_ret ret = LZMA_OK;
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switch (type) {
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case LZMA_CHECK_NONE:
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break;
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#ifdef HAVE_CHECK_CRC32
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case LZMA_CHECK_CRC32:
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check->state.crc32 = 0;
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break;
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#endif
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#ifdef HAVE_CHECK_CRC64
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case LZMA_CHECK_CRC64:
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check->state.crc64 = 0;
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break;
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#endif
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#ifdef HAVE_CHECK_SHA256
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case LZMA_CHECK_SHA256:
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lzma_sha256_init(check);
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break;
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#endif
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default:
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if ((unsigned)(type) <= LZMA_CHECK_ID_MAX)
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ret = LZMA_UNSUPPORTED_CHECK;
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else
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ret = LZMA_PROG_ERROR;
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break;
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}
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return ret;
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}
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extern void
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lzma_check_update(lzma_check *check, lzma_check_type type,
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const uint8_t *buf, size_t size)
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{
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switch (type) {
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#ifdef HAVE_CHECK_CRC32
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case LZMA_CHECK_CRC32:
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check->state.crc32 = lzma_crc32(buf, size, check->state.crc32);
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break;
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#endif
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#ifdef HAVE_CHECK_CRC64
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case LZMA_CHECK_CRC64:
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check->state.crc64 = lzma_crc64(buf, size, check->state.crc64);
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break;
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#endif
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#ifdef HAVE_CHECK_SHA256
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case LZMA_CHECK_SHA256:
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lzma_sha256_update(buf, size, check);
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break;
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#endif
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default:
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break;
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}
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return;
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}
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extern void
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lzma_check_finish(lzma_check *check, lzma_check_type type)
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{
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switch (type) {
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#ifdef HAVE_CHECK_CRC32
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case LZMA_CHECK_CRC32:
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*(uint32_t *)(check->buffer) = check->state.crc32;
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break;
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#endif
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#ifdef HAVE_CHECK_CRC64
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case LZMA_CHECK_CRC64:
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*(uint64_t *)(check->buffer) = check->state.crc64;
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break;
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#endif
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#ifdef HAVE_CHECK_SHA256
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case LZMA_CHECK_SHA256:
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lzma_sha256_finish(check);
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break;
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#endif
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default:
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break;
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}
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return;
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}
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/*
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extern bool
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lzma_check_compare(
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lzma_check *check1, lzma_check *check2, lzma_check_type type)
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{
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bool ret;
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switch (type) {
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case LZMA_CHECK_NONE:
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break;
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case LZMA_CHECK_CRC32:
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ret = check1->crc32 != check2->crc32;
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break;
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case LZMA_CHECK_CRC64:
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ret = check1->crc64 != check2->crc64;
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break;
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default:
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// Unsupported check
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assert(type <= 7);
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ret = false;
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break;
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}
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return ret;
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}
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*/
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