97 lines
4.9 KiB
C
97 lines
4.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/bits/safemacros.internal.h"
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#include "libc/calls/calls.h"
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#include "libc/log/check.h"
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#include "libc/nexgen32e/kompressor.h"
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#include "libc/nexgen32e/lz4.h"
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#include "libc/runtime/ezmap.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/testlib/testlib.h"
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TEST(lz4, decompress_emptyStringWithoutChecksum) {
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/* lz4 -9 --content-size --no-frame-crc /tmp/empty - | hexdump -C */
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static char kLz4Data[] = {0x04, 0x22, 0x4d, 0x18, 0x60, 0x40,
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0x82, 0x00, 0x00, 0x00, 0x00};
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char *src = memcpy(tmalloc(sizeof(kLz4Data)), kLz4Data, sizeof(kLz4Data));
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char *dst = tmalloc(1);
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*dst = 'z';
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ASSERT_EQ(dst, lz4decode(dst, src));
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ASSERT_EQ('z', *dst);
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tfree(dst);
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tfree(src);
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}
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TEST(lz4, decompress_oneLetterWithoutChecksum) {
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/* printf a >oneletter */
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/* lz4 -9 --content-size --no-frame-crc oneletter /dev/stdout | hexdump -C */
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static char kLz4Data[] = {0x04, 0x22, 0x4d, 0x18, 0x68, 0x40, 0x01, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2c, 0x01,
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0x00, 0x00, 0x80, 0x61, 0x00, 0x00, 0x00, 0x00};
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char *src = memcpy(tmalloc(sizeof(kLz4Data)), kLz4Data, sizeof(kLz4Data));
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char *dst = tmalloc(1);
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ASSERT_EQ(dst + 1, lz4decode(dst, src));
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ASSERT_EQ('a', *dst);
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tfree(dst);
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tfree(src);
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}
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TEST(lz4, decompress_runLengthDecode) {
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/* printf aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >/tmp/a */
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/* lz4 -9 --content-size --no-frame-crc /tmp/a - | hexdump -vC */
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static char kLz4Data[] = {
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0x04, 0x22, 0x4d, 0x18, 0x68, 0x40, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x30, 0x0b, 0x00, 0x00, 0x00, 0x1f, 0x61, 0x01, 0x00, 0x07,
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0x50, 0x61, 0x61, 0x61, 0x61, 0x61, 0x00, 0x00, 0x00, 0x00};
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char *src = memcpy(tmalloc(sizeof(kLz4Data)), kLz4Data, sizeof(kLz4Data));
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const char *want = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
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char *dst = tmalloc(strlen(want));
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ASSERT_EQ(dst + strlen(want), lz4decode(dst, src));
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ASSERT_STREQN(want, dst, strlen(want));
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tfree(dst);
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tfree(src);
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}
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TEST(lz4, zoneFileGmt) {
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if (!fileexists("usr/share/zoneinfo.dict.lz4")) return;
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struct MappedFile dict, gmt;
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CHECK_NE(-1, MapFileRead("usr/share/zoneinfo.dict.lz4", &dict));
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CHECK_NE(-1, MapFileRead("usr/share/zoneinfo/GMT.lz4", &gmt));
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size_t mapsize, gmtsize;
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char *mapping, *gmtdata;
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lz4decode((gmtdata = lz4decode(
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(mapping = mapanon(
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(mapsize = roundup(
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LZ4_FRAME_BLOCKCONTENTSIZE(lz4check(dict.addr)) +
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(gmtsize = LZ4_FRAME_BLOCKCONTENTSIZE(
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lz4check(gmt.addr))),
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FRAMESIZE)))),
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dict.addr)),
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gmt.addr);
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ASSERT_BINEQ(
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u"TZif2 ☺ ☺ ☺ ♦ GMT TZif2 "
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u" ☺ ☺ ☺ ☺ ♦° GMT ◙GMT0◙",
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gmtdata);
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munmap(mapping, mapsize);
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UnmapFile(&dict);
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UnmapFile(&gmt);
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}
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