void cSHA1Checksum::DigestToJava(const Checksum & a_Digest, AString & a_Out)
{
Checksum Digest;
memcpy(Digest, a_Digest, sizeof(Digest));
bool IsNegative = (Digest[0] >= 0x80);
if (IsNegative)
{
// Two's complement:
bool carry = true; // Add one to the whole number
for (int i = 19; i >= 0; i--)
{
Digest[i] = ~Digest[i];
if (carry)
{
carry = (Digest[i] == 0xff);
Digest[i]++;
}
}
}
a_Out.clear();
a_Out.reserve(40);
for (int i = 0; i < 20; i++)
{
AppendPrintf(a_Out, "%02x", Digest[i]);
}
while ((a_Out.length() > 0) && (a_Out[0] == '0'))
{
a_Out.erase(0, 1);
}
if (IsNegative)
{
a_Out.insert(0, "-");
}
}
AString cMojangAPI::MakeUUIDShort(const AString & a_UUID)
{
// Note: we only check the string's length, not the actual content
switch (a_UUID.size())
{
case 32:
{
// Already is a short UUID, only lowercase
return StrToLower(a_UUID);
}
case 36:
{
// Remove the dashes from the string by appending together the parts between them:
AString res;
res.reserve(32);
res.append(a_UUID, 0, 8);
res.append(a_UUID, 9, 4);
res.append(a_UUID, 14, 4);
res.append(a_UUID, 19, 4);
res.append(a_UUID, 24, 12);
return StrToLower(res);
}
}
LOGWARNING("%s: Not an UUID: \"%s\".", __FUNCTION__, a_UUID.c_str());
return "";
}
AString cMojangAPI::MakeUUIDDashed(const AString & a_UUID)
{
// Note: we only check the string's length, not the actual content
switch (a_UUID.size())
{
case 36:
{
// Already is a dashed UUID, only lowercase
return StrToLower(a_UUID);
}
case 32:
{
// Insert dashes at the proper positions:
AString res;
res.reserve(36);
res.append(a_UUID, 0, 8);
res.push_back('-');
res.append(a_UUID, 8, 4);
res.push_back('-');
res.append(a_UUID, 12, 4);
res.push_back('-');
res.append(a_UUID, 16, 4);
res.push_back('-');
res.append(a_UUID, 20, 12);
return StrToLower(res);
}
}
LOGWARNING("%s: Not an UUID: \"%s\".", __FUNCTION__, a_UUID.c_str());
return "";
}
bool cByteBuffer::ReadString(AString & a_String, int a_Count)
{
CHECK_THREAD;
CheckValid();
ASSERT(a_Count >= 0);
NEEDBYTES(a_Count);
a_String.clear();
a_String.reserve(a_Count);
int BytesToEndOfBuffer = m_BufferSize - m_ReadPos;
ASSERT(BytesToEndOfBuffer >= 0); // Sanity check
if (BytesToEndOfBuffer <= a_Count)
{
// Reading across the ringbuffer end, read the first part and adjust parameters:
if (BytesToEndOfBuffer > 0)
{
a_String.assign(m_Buffer + m_ReadPos, BytesToEndOfBuffer);
a_Count -= BytesToEndOfBuffer;
}
m_ReadPos = 0;
}
// Read the rest of the bytes in a single read (guaranteed to fit):
if (a_Count > 0)
{
a_String.append(m_Buffer + m_ReadPos, a_Count);
m_ReadPos += a_Count;
}
return true;
}
// Converts a raw 160-bit SHA1 digest into a Java Hex representation
// According to http://wiki.vg/wiki/index.php?title=Protocol_Encryption&oldid=2802
static void DigestToJava(byte a_Digest[20], AString & a_Out)
{
bool IsNegative = (a_Digest[0] >= 0x80);
if (IsNegative)
{
// Two's complement:
bool carry = true; // Add one to the whole number
for (int i = 19; i >= 0; i--)
{
a_Digest[i] = ~a_Digest[i];
if (carry)
{
carry = (a_Digest[i] == 0xff);
a_Digest[i]++;
}
}
}
a_Out.clear();
a_Out.reserve(40);
for (int i = 0; i < 20; i++)
{
AppendPrintf(a_Out, "%02x", a_Digest[i]);
}
while ((a_Out.length() > 0) && (a_Out[0] == '0'))
{
a_Out.erase(0, 1);
}
if (IsNegative)
{
a_Out.insert(0, "-");
}
}
AString cWebAdmin::GetHTMLEscapedString(const AString & a_Input)
{
AString dst;
dst.reserve(a_Input.length());
// Loop over input and substitute HTML characters for their alternatives:
size_t len = a_Input.length();
for (size_t i = 0; i < len; i++)
{
switch (a_Input[i])
{
case '&': dst.append("&"); break;
case '\'': dst.append("'"); break;
case '"': dst.append("""); break;
case '<': dst.append("<"); break;
case '>': dst.append(">"); break;
default:
{
dst.push_back(a_Input[i]);
break;
}
} // switch (a_Input[i])
} // for i - a_Input[]
return dst;
}
int CompressStringGZIP(const char * a_Data, size_t a_Length, AString & a_Compressed)
{
// Compress a_Data into a_Compressed using GZIP; return Z_XXX error constants same as zlib's compress2()
a_Compressed.reserve(a_Length);
char Buffer[64 KiB];
z_stream strm;
memset(&strm, 0, sizeof(strm));
strm.next_in = reinterpret_cast<Bytef *>(const_cast<char *>(a_Data));
strm.avail_in = static_cast<uInt>(a_Length);
strm.next_out = reinterpret_cast<Bytef *>(Buffer);
strm.avail_out = sizeof(Buffer);
int res = deflateInit2(&strm, 9, Z_DEFLATED, 31, 9, Z_DEFAULT_STRATEGY);
if (res != Z_OK)
{
LOG("%s: compression initialization failed: %d (\"%s\").", __FUNCTION__, res, strm.msg);
return res;
}
for (;;)
{
res = deflate(&strm, Z_FINISH);
switch (res)
{
case Z_OK:
{
// Some data has been compressed. Consume the buffer and continue compressing
a_Compressed.append(Buffer, sizeof(Buffer) - strm.avail_out);
strm.next_out = reinterpret_cast<Bytef *>(Buffer);
strm.avail_out = sizeof(Buffer);
if (strm.avail_in == 0)
{
// All data has been compressed
deflateEnd(&strm);
return Z_OK;
}
break;
}
case Z_STREAM_END:
{
// Finished compressing. Consume the rest of the buffer and return
a_Compressed.append(Buffer, sizeof(Buffer) - strm.avail_out);
deflateEnd(&strm);
return Z_OK;
}
default:
{
// An error has occurred, log it and return the error value
LOG("%s: compression failed: %d (\"%s\").", __FUNCTION__, res, strm.msg);
deflateEnd(&strm);
return res;
}
} // switch (res)
} // while (true)
}
extern int InflateString(const char * a_Data, size_t a_Length, AString & a_Uncompressed)
{
a_Uncompressed.reserve(a_Length);
char Buffer[64 KiB];
z_stream strm;
memset(&strm, 0, sizeof(strm));
strm.next_in = reinterpret_cast<Bytef *>(const_cast<char *>(a_Data));
strm.avail_in = static_cast<uInt>(a_Length);
strm.next_out = reinterpret_cast<Bytef *>(Buffer);
strm.avail_out = sizeof(Buffer);
int res = inflateInit(&strm); // Force GZIP decoding
if (res != Z_OK)
{
LOG("%s: inflation initialization failed: %d (\"%s\").", __FUNCTION__, res, strm.msg);
return res;
}
for (;;)
{
res = inflate(&strm, Z_NO_FLUSH);
switch (res)
{
case Z_OK:
{
// Some data has been uncompressed. Consume the buffer and continue uncompressing
a_Uncompressed.append(Buffer, sizeof(Buffer) - strm.avail_out);
strm.next_out = reinterpret_cast<Bytef *>(Buffer);
strm.avail_out = sizeof(Buffer);
if (strm.avail_in == 0)
{
// All data has been uncompressed
inflateEnd(&strm);
return Z_OK;
}
break;
}
case Z_STREAM_END:
{
// Finished uncompressing. Consume the rest of the buffer and return
a_Uncompressed.append(Buffer, sizeof(Buffer) - strm.avail_out);
inflateEnd(&strm);
return Z_OK;
}
default:
{
// An error has occurred, log it and return the error value
LOG("%s: inflation failed: %d (\"%s\").", __FUNCTION__, res, strm.msg);
inflateEnd(&strm);
return res;
}
} // switch (res)
} // while (true)
}
AString cCaveTunnel::ExportAsSVG(int a_Color, int a_OffsetX, int a_OffsetZ) const
{
AString SVG;
SVG.reserve(m_Points.size() * 20 + 200);
AppendPrintf(SVG, "<path style=\"fill:none;stroke:#%06x;stroke-width:1px;\"\nd=\"", a_Color);
char Prefix = 'M'; // The first point needs "M" prefix, all the others need "L"
for (cCaveDefPoints::const_iterator itr = m_Points.begin(); itr != m_Points.end(); ++itr)
{
AppendPrintf(SVG, "%c %d, %d ", Prefix, a_OffsetX + itr->m_BlockX, a_OffsetZ + itr->m_BlockZ);
Prefix = 'L';
}
SVG.append("\"/>\n");
return SVG;
}
AString cWebPlugin::SafeString(const AString & a_String)
{
AString RetVal;
auto len = a_String.size();
RetVal.reserve(len);
for (size_t i = 0; i < len; ++i)
{
char c = a_String[i];
if (c == ' ')
{
c = '_';
}
RetVal.push_back(c);
}
return RetVal;
}
void cSpringStatsFactory::SaveStatistics(const cSpringStats::cStats::SpringStats & a_Stats, const AString & a_FileName)
{
cFile f(a_FileName, cFile::fmWrite);
if (!f.IsOpen())
{
LOG("Cannot open file \"%s\" for writing!", a_FileName.c_str());
return;
}
for (int Height = 0; Height < 256; Height++)
{
AString Line;
Line.reserve(2000);
Printf(Line, "%d\t", Height);
for (int Biome = 0; Biome < 256; Biome++)
{
AppendPrintf(Line, "%llu\t", a_Stats[Height][Biome]);
}
Line.append("\n");
f.Write(Line.c_str(), Line.size());
}
}
AString cStructGenWormNestCaves::cCaveSystem::ExportAsSVG(int a_Color, int a_OffsetX, int a_OffsetZ) const
{
AString SVG;
SVG.reserve(512 * 1024);
for (cCaveTunnels::const_iterator itr = m_Tunnels.begin(), end = m_Tunnels.end(); itr != end; ++itr)
{
SVG.append((*itr)->ExportAsSVG(a_Color, a_OffsetX, a_OffsetZ));
} // for itr - m_Tunnels[]
// Base point highlight:
AppendPrintf(SVG, "<path style=\"fill:none;stroke:#ff0000;stroke-width:1px;\"\nd=\"M %d,%d L %d,%d\"/>\n",
a_OffsetX + m_BlockX - 5, a_OffsetZ + m_BlockZ, a_OffsetX + m_BlockX + 5, a_OffsetZ + m_BlockZ
);
AppendPrintf(SVG, "<path style=\"fill:none;stroke:#ff0000;stroke-width:1px;\"\nd=\"M %d,%d L %d,%d\"/>\n",
a_OffsetX + m_BlockX, a_OffsetZ + m_BlockZ - 5, a_OffsetX + m_BlockX, a_OffsetZ + m_BlockZ + 5
);
// A gray line from the base point to the first point of the ravine, for identification:
AppendPrintf(SVG, "<path style=\"fill:none;stroke:#cfcfcf;stroke-width:1px;\"\nd=\"M %d,%d L %d,%d\"/>\n",
a_OffsetX + m_BlockX, a_OffsetZ + m_BlockZ,
a_OffsetX + m_Tunnels.front()->m_Points.front().m_BlockX,
a_OffsetZ + m_Tunnels.front()->m_Points.front().m_BlockZ
);
// Offset guides:
if (a_OffsetX > 0)
{
AppendPrintf(SVG, "<path style=\"fill:none;stroke:#0000ff;stroke-width:1px;\"\nd=\"M %d,0 L %d,1024\"/>\n",
a_OffsetX, a_OffsetX
);
}
if (a_OffsetZ > 0)
{
AppendPrintf(SVG, "<path style=\"fill:none;stroke:#0000ff;stroke-width:1px;\"\nd=\"M 0,%d L 1024,%d\"/>\n",
a_OffsetZ, a_OffsetZ
);
}
return SVG;
}
