mirrors/hyperrogue
1
0
Fork 0
mirror of https://github.com/zenorogue/hyperrogue.git synced 2026-03-19 19:39:43 +00:00
Code Issues Releases Wiki Activity

zlib used for (de)compression

Browse Source
This commit is contained in:
Zeno Rogue
2020-01-26 00:30:13 +01:00
parent 76a0ea8795
commit f20a6bf2f6
5 changed files with 48 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
util.cpp
View File

@@ -523,4 +523,45 @@ bignum::bignum(ld d) {
while(n >= 0) { digits[n] = int(d); d -= digits[n]; d *= BASE; n--; }
}
/* compression/decompression */
EX string compress_string(string s) {
z_stream strm;
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
println(hlog, "pre init");
auto ret = deflateInit(&strm, 9);
if(ret != Z_OK) throw "z-error";
println(hlog, "init ok");
strm.avail_in = isize(s);
strm.next_in = (Bytef*) &s[0];
vector<char> buf(1000000, 0);
strm.avail_out = 1000000;
strm.next_out = (Bytef*) &buf[0];
if(deflate(&strm, Z_FINISH) != Z_STREAM_END) throw "z-error-2";
println(hlog, "deflate ok");
string out(&buf[0], (char*)(strm.next_out) - &buf[0]);
println(hlog, isize(s), " -> ", isize(out));
return out;
}
EX string decompress_string(string s) {
z_stream strm;
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
auto ret = inflateInit(&strm);
if(ret != Z_OK) throw "z-error";
strm.avail_in = isize(s);
strm.next_in = (Bytef*) &s[0];
vector<char> buf(1000000, 0);
strm.avail_out = 1000000;
strm.next_out = (Bytef*) &buf[0];
if(inflate(&strm, Z_FINISH) != Z_STREAM_END) throw "z-error-2";
string out(&buf[0], (char*)(strm.next_out) - &buf[0]);
println(hlog, isize(s), " -> ", isize(out));
return out;
}
}